COMPLIANCE AUDIT REPORT MACEDONIAN TRANSMISSION SYSTEM OPERATOR AD (MEPSO)

Transcription

1 COMPLIANCE AUDIT REPORT MACEDONIAN TRANSMISSION SYSTEM OPERATOR AD (MEPSO) COMPLIANCE AUDIT CONDUCTED IN THE NATIONAL CONTROL CENTRE OF MEPSO IN SKOPJE BY THE ENTSO-E RG CE SG CME

2 DISCLAIMER The present Compliance Audit Report is based on the information as provided by the audited company. This report is in no way a guarantee that security and reliability on the system of the audited company and/or on the whole synchronously interconnected system of the Regional Group Continental Europe (RGCE) is ensured. This report cannot be considered as a certification of whatever form. Finally, this report does not as such have any impact on the compliance, by the audited company and/or by any other member of ENTSO-E, with the RGCE Operation Handbook and/or any other relevant applicable standard. Page 2 of 38

3 Contents 1 EXECUTIVE SUMMARY COMPLIANCE MONITORING IN ENTSO-E RGCE AUDITED TSO AUDITED OH STANDARDS RESULTS AUDIT REPRESENTATIVES AUDIT PLAN GENERAL PROCEDURES SCOPE METHODOLOGY EVALUATION PRINCIPLES CONFIDENTIALITY AUDIT WORKSHEET FOR 2013 ONSITE AUDIT OH STANDARD P4-A-S2. RELEVANT ELEMENTS OH STANDARD P4-A-S2.1. CRITICAL ELEMENTS OH STANDARD P4-A-S3. EXCHANGE OF INFORMATION OH STANDARD P4-A-S4.1. LONG-TERM PLANNING OH STANDARD P4-A-S5. CONFIRMATION OF PLANNED OUTAGES OH STANDARD P4-B-S2. CAPACITY ASSESSMENT OH STANDARD P4-B-S3. HARMONISATION OF CAPACITY VALUES OH STANDARD P4-B-S4. PROCEDURE FOR THE CAPACITY ASSESSMENT OH STANDARD P4-B-S6. WEEKLY OPERATIONAL TELECONFERENCE OH STANDARD P4-B-S7. CALCULATION OF ATC VALUES OH STANDARD P4-C-S2.1. NETWORK MODEL OH STANDARD P4-C-S3. DATA COLLECTION OH STANDARD P4-C-S9. SECURITY CHECK OH STANDARD P4-C-S11. ADDITIONAL DATA CONCLUSIONS SIGNATURE PAGE Page 3 of 38

4 1 EXECUTIVE SUMMARY 1.1 COMPLIANCE MONITORING IN ENTSO-E RGCE The mission of the ENTSO-E System Operation Committee Regional Group Continental Europe (RGCE) is to improve the reliability and security of the interconnected power system in the Continental Europe through developing and enforcing RGCE Operation Handbook (OH) standards, monitoring the interconnected power system and assessing its future adequacy. The RGCE member TSOs are subject to compliance with all approved OH standards. The Compliance Monitoring Program (CMP) is the RGCE program that monitors and assesses compliance with these standards via: the annual process of self-assessment, which is applied to all TSOs, as well as the annual process of mandatory on-site compliance audits, which is applied to a certain number of TSOs chosen on a rotating base either directly (in case of doubts that a certain TSO complies with OH Standards) or by random. SG Compliance Monitoring & Enforcement (CME) is in charge of performing above mentioned two processes. The 2013 is the fourth year of conducting mandatory compliance audits. SG CME performed 4 voluntary compliance audits in and 18 mandatory audits in AUDITED TSO The RGCE member TSO MEPSO was chosen for a Compliance Audit in CME conducted the audit on 1 & 2 October 2013 at the Dispatching Center of MEPSO in Skopje, FYROM. 1.3 AUDITED OH STANDARDS The Compliance Audit encompassed 14 standards of Operation Handbook Policy 4 (Coordinated Operational Planning). In 2012, MEPSO made compliance declarations in the self-assessment process for all standards of OH Policy 4, a subset of which has been checked against their evidence during the audit. 1.4 RESULTS The Audit Team audited 14 standards. The Audit Team found that MEPSO is with all the audited standards but one which is N/A (standard P4-B-S7- Calculation of ATC values) due to the fact that there is no joint capacity allocation in place with the neighbouring TSOs.. Visiting of national control centre helped the audit team to better understand organisation and processes in the MEPSO system. Necessary documentation was prepared and made available at the audit location and the representatives of MEPSO demonstrated that they are familiar with the content of every single document. All explanations were focused to the matter and well presented. The audit team expresses its satisfaction with the MEPSO approach both in the preparation phase and during the on-site audit. Table 1 describes MEPSO compliance declaration in self-assessment questionnaire 2012 and compliance audit questionnaire 2013 with compliance level suggestion by the CME audit team after reviewing the evidence for the audited standards. Upgrades are highlighted with green. Standards which kept their declaration level are not highlighted. Yellow is used for standards whose declaration was changed by the Audit Team to N/A. Page 4 of 38

5 TABLE 1: COMPLIANCE LEVEL CHANGES FOR THE AUDITED OH STANDARDS OH Standard Self- assessment questionnaire 2012 Compliance audit questionnaire 2013 On site compliance audit 2013 P4-A-S2. RELEVANT ELEMENTS P4-A-S2.1. CRITICAL ELEMENTS P4-A-S3. EXCHANGE OF INFORMATION P4-A-S4.1. LONG-TERM PLANNING P4-A-S5. CONFIRMATION OF PLANNED OUTAGES P4-B-S2. CAPACITY ASSESSMENT P4-B-S3. HARMONISATION OF CAPACITY VALUES P4-B-S4. PROCEDURE FOR THE CAPACITY ASSESSMENT P4-B-S6. WEEKLY OPERATIONAL TELECONFERENCE P4-B-S7. CALCULATION OF ATC VALUES N/A P4-C-S2.1. NETWORK MODEL P4-C-S3. DATA COLLECTION P4-C-S9. SECURITY CHECK P4-C-S11. ADDITIONAL DATA Page 5 of 38

6 2 AUDIT REPRESENTATIVES The Audit Team has the task to prepare and perform the Compliance Audit as well as to develop the corresponding audit report. The audit team composition is given in Table 2. The TSO subject to a compliance audit may object any member of the Audit Team on the basis of a conflict of interests or the existence of other circumstances that could interfere with the impartial performance of his or her duties. The audited TSO is obligated to express its concerns with the proposed team member four weeks prior to the team s arrival on-site. No objection was expressed by MEPSO. MEPSO personnel involved in the audit is given in Table 3. TABLE 2. CME AUDIT TEAM FOR MEPSO Audit Team role Audit team leader Audit team member Audit team member Compliance Monitoring Advisor Company or association Name REE Jaime Sanchiz jsanchiz@ree.es address Terna Silvia Moroni silvia.moroni@terna.it CEPS Martin Rehacek rehacekm@ceps.cz ENTSO-E Secretariat Emmanouil Styvaktakis emmanouil.styvaktakis@entsoe.eu TABLE 3. MEPSO AUDIT STAFF Function in the company Head of National Control Centre Head of Operational Department Head of the Planning Department Electrical Engineer for Power Applications Electrical Engineer for Network Analysis Dispatcher on duty (1 October 2013) Dispatcher on duty (1 October 2013) Name Borko Aleksoski Space Pavloski Izabela Netkova Nenad Jovanoski Darko Dokuzovski Done Asprovski Hikola Pangovski Page 6 of 38

7 3 AUDIT PLAN 3.1 GENERAL PROCEDURES The audit covered a chosen set of Operation Handbook (OH) standards which had already been monitored within the Compliance Monitoring Program 2012 self-assessment process. The completed Audit Worksheet was sent by to the ENTSO-E Secretariat and carbon copies to all Audit Team members three weeks before the first audit day. The complete schedule of the audit process for MEPSO is given on Table 4. All documentation (evidence) required for the onsite audit of each standard was available as a hard copy or in electronic format at the audit location. The Control Area Manager and/or other responsible expert personnel were available during the audit to provide guidance to the Audit Team on where to look in the documentation for compliance to the OH standard and, if requested, to give further explanation on criteria and procedures implemented. In preparation for the audit, MEPSO organised its supporting compliance documentation which is the evidence of the compliance with audited standards. The ENTSO-E RGCE SG CME acknowledges a satisfactory preparation for the audit. All documentation will be considered as confidential audit records and treated as such. The Audit Team will prepare a public report of its audit findings. Page 7 of 38

8 TABLE 4. SCHEDULE FOR THE COMPLIANCE AUDIT Submittal of the audit material on behalf of the Audit Team Objection or concern about audit team personnel Submittal of the completed Audit Worksheet to the Audit Team by MEPSO Initial draft of the audit report based on the Audit Worksheet sent to MEPSO by the Audit Team Opening meeting of the Audit Team and CAM of MEPSO (1) Introduction of the Audit Team members, (2) Description of how the on-site audit will be conducted, (3) Discussion on how confidential information will be handled, (4) Discussion on data access required by the Audit Team, (5) Announcement that MEPSO will be asked to provide feedback on the audit process and results, (6) Presentation of the TSO and TSO s organization. Start of the OH standards review* Continuation of the OH standards review Internal Audit Team meeting Closing meeting with CAM of MEPSO (1) Presentation of preliminary audit findings and recommendations to be included on the draft audit report, with a strong emphasis on the evidences for each compliance level or non-compliance identified by the Audit Team, (2) Discussion and feedback by MEPSO with a possibility to object the findings, (3) In case of any non-compliance or lack of evidence of compliance, first draft proposal of the TSO on an adequate mitigation plan, including deadline. Should such an immediate proposal not be possible, the TSO must submit it afterwards in written copy within seven days. Delivery of the draft audit report to MEPSO for review Remarks by MEPSO Delivery of the final audit report to MEPSO Acknowledgement of the final Audit Report by ENTSO-E RGCE Plenary and decision on its possible internal or external publishing. 7 weeks prior to audit weeks prior to audit weeks prior to audit working days prior to audit First audit day, :00 09:30 First audit day, :30 17:30 Second audit day, :00 12:30 Second audit day, :30 14:00 Second audit day, :00 15:30 2 weeks after the audit weeks after the audit weeks after the audit RGCE Plenary in 2014 Page 8 of 38

9 3.2 SCOPE The objective of Compliance Audits in 2013 is to check chosen set of standards from OH Policy 4. These standards were also monitored in the 2012 regular compliance process via the self-assessment questionnaire. The scope of a compliance audit encompasses issues which are directly related to the compliance of the audited TSO with the investigated RGCE OH standards and issues which make a general background for the implementation of the OH at the audited TSO. Directly related issues Issues directly related to the audited RGCE OH standards: Existence of TSO s addenda and/or non-compliance declarations/non-compliance self-reports Follow-up of the TSO s mitigation plans to remove the declared non-compliances Self-assessment questionnaires of 2012 stored at the ENTSO-E Secretariat related to audited TSO concerning the audited OH standards Audit Worksheet (AW) 2013 Information and explanations which the Audit Team receives on site General background The compliance audit also encompasses issues of general nature listed below: General policies of the audited TSO rules and procedures for the control centre(s) related to the audited standards Procedures to control the application of the audited OH standards and their follow-up Procedures to improve the compliance with the audited OH standards TSO s internal report related to the implementation of the audited OH standards TSO s internal audits and/or documentation concerning implementation of OH standards TSO s internal bodies (forums, panels) for the implementation of the OH standards 3.3 METHODOLOGY The CME group prepared an audit schedule defining the chronological order of the compliance audit, which the audited TSO accepted without comment. The audit team reviewed the existing material on the audited TSO and its neighbouring TSOs already collected through the self-assessment process in the 2012 self-assessment questionnaires. It also processed (assessed) the answers in the 2013 Audit Worksheet filled in by the audited TSO. The applied methodology includes audit criteria and expectations based on best practices. The adopted criteria are objective, measurable (if possible), complete and relevant to the objectives. At defining the audit methodology, the auditors identified the potential sources of audit evidence and estimated the amount and type of evidence needed. The audit team used an Audit Worksheet (see chapter 4) for reviewing the audited OH standards. The purpose of the AW is to ensure consistency and fairness. By using the AW the Audit Team documented the material reviewed and the observations made. One of the main reasons for an on-site visit is to review the existing documentation and to interview the staff. Thus, the auditors obtain objective evidence which support the self-assessed declarations of the audited TSO. The audit team determined whether the evidence presented by the TSO is sufficient. They did this by assessing the relevance, validity and reliability of the information and documentation presented. It was the responsibility of the audited TSO to provide evidence of compliance with all audited OH standards. In most cases the evidence was in written form like documents, plans, programs or Page 9 of 38

10 records. In some cases the evidence consisted of a review of computerized records or additional supporting material provided at interviews by the staff of the audited TSO. 3.4 EVALUATION PRINCIPLES Preparatory phase activities in charge of Audited TSO Inspection of the exact wording of each audited OH standard and of additional questions formulated by the CME Fill in the audit questionnaire and submit to the audit team before the audit Identification of documents and other material to present to the auditors in order to demonstrate its compliance level with each OH standard Preparatory phase activities in charge of CME Audit team Identification of compliance level declaration inconsistency with neighbouring TSOs (Selfassessment questionnaire 2012 cross-border check regarding compliance level declarations) Analysis of the explanations and comments which the audited TSO made in the selfassessment 2012 and audit questionnaires 2013 in written form in order to evaluate the quality of explanations and comments Identification of the missing explanations in the self-assessment 2012 and audit questionnaire 2013 Analysis of the improvements achieved during the implementation of mitigation and improvement plans declared in the MLA Addendum/Addenda, in the self-assessment questionnaire 2012 and in the Audit Worksheet 2013 in case of non-compliance and sufficient compliance Audit phase Request to the audited TSO to give additional explanations, especially related to standards which were not or not fully addressed by documents and other material mentioned in the selfassessment questionnaire 2012 and audit questionnaire o The goal was to improve the quality of the explanations. Request to the audited TSO to present that evidence and, if necessary, additional evidence, in printed or electronic form o o The goal was to improve the quality of the presented evidence. The goal was to present material relevant to the audited OH standard at all. Request to the audited TSO to remark the titles of all presented documents, their relevant chapters and even relevant passages. Request to the audited TSO to provide further written explanations related to the presented material. 3.5 CONFIDENTIALITY By signing this report the audit team members assure that they will maintain the confidentiality of information obtained during the compliance audit and drafting of the audit report. Moreover, they express their readiness to sign a supplementary confidentiality agreement, if the audited TSO assert such a claim. Page 10 of 38

11 4 AUDIT WORKSHEET FOR 2013 ONSITE AUDIT 4.1 OH STANDARD P4-A-S2. RELEVANT ELEMENTS SELF-ASSESSMENT QUESTIONNAIRE 2012 P4-A-S2 Relevant elements. The set of network elements (e.g. TIE-LINES, internal lines, bus-bars, phase shifters, transformers, major generating units), automatic and protection devices which influence two or more TSOs while being out of operation has to be agreed among involved TSOs on a regional basis. Compliance Level: Explanation for the full compliance declaration: Contingency list and External contingency list. Those elements have influence of our and neighboring systems. Disconnection of those elements is agreed with neighboring TSOs. Additional Questions Do you exchange a list with relevant elements, which could influence two or more TSOs while being out of operation, with the involved partners? AUDIT QUESTIONNAIRE 2013 P4-A-S2 Relevant elements. The set of network elements (e.g. TIE-LINES, internal lines, bus-bars, phase shifters, transformers, major generating units), automatic and protection devices which influence two or more TSOs while being out of operation has to be agreed among involved TSOs on a regional basis. Compliance Level: Concise explanation and list of evidences for declared compliance level: D Contingency list and External contingency list. Those elements have influence of our and neighbouring systems. Disconnection of those elements is agreed with neighbouring TSOs. Do you have a mitigation plan to the standard? Yes No Page 11 of 38

12 In case of an existing Addendum or a Non Compliance Declaration; list of evidences for a mitigation plan, comments: Additional Questions Do you exchange a list with relevant elements, which could influence two or more TSOs while being out of operation, with the involved partners? List of evidences, comments: D -Operational Agreement concluded between S.A and MEPSO AD (Appendix 22 Contingency List and External Observability Area) -Annex 1 to Operational Agreement for Cooperation and Electrical Power Exchange over 400kV and 110kV Interconnection Lines between Electrical power Transmission Systems of Bulgaria and Macedonia (Appendix 31 Contingency List and External Observability Area) With, MEPSO applied Contingency List of lines (interconnection and internal lines) defined within the SEE Maintenance Group (Excel tab). This list is made up of interconnections and internal 400kV and 220kV transmission lines that affect two or more TSOs in the time of maintenance, and the disconnections are agreed bilaterally and in the frame of the SEE Maintenance Group. In practice MEPSO makes up one step more, in all calculations relating to the cross-border transmission capacities for different time horizons, as well as in the planning faze and forecast calculations, Contingency List and the list of monitored elements (Monitoring elements) is composed of all 400 kv and 220 kv elements of the transmission network of. -(Excel table from SEE Maintenance Group with all 400 and 220 kv interconnections and internal lines agreed between involved TSOs), Screen Shots from NTC and DACF calculation. COMPLIANCE AUDIT 2013 Compliance Level suggestion by the audit team: Explanation for the suggested compliance level: The following documents were presented by MEPSO: (1) Operational agreement between MEPSO and (dated 2012, archived 02 January 2013) (2) Bilateral accounting agreement (version 0, release 3, dated 2012, archived 10 January 2013) and Memorandum (dated in 2012, archived 14 November 2012) covering year 2013 between MEPSO and (3) Operational Agreement between and MEPSO (dated 2008, archived 20 March 2009) and Annex 1 (archived ) The regional annual maintenance schedule for 2013 and one update version from February 2013 were also presented. The agreement with EMS does not cover this aspect (relevant elements); the information is exchanged within the framework of the regional Maintenance Group. The agreements with and include the list of relevant elements as defined in the standard. However, some of the transmission elements listed in these agreements are not included in the regional annual maintenance schedule presented by MEPSO (e.g. Thessaloniki-Filipi and Skopje 5 - Kosovo B). This is due to changes which occurred in the networks (new substations introduced, transmission lines rerouted). Page 12 of 38

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14 4.2 OH STANDARD P4-A-S2.1. CRITICAL ELEMENTS SELF-ASSESSMENT QUESTIONNAIRE 2012 P4-A-S2.1 Critical elements. A subset of relevant elements which are considered to have a major influence on the operational management of the neighbouring systems has to be agreed among involved TSOs. The scheduling of the outages of these elements must be agreed among the TSOs involved on a regional basis This set must include at least the elements considered in the EXTERNAL CONTINGENCY LIST ((>>P3-A) determined by each of the TSOs involved in the region. Compliance Level: Explanation for the full compliance declaration: All interconnection lines are included in External contingency list and they are considered as critical elements. Planning outage of those lines is realizing on regional level before the begging of the year, as a main activities of SEE Maintenance group. Members of this group are: ATSO, CGES, EMS, ESO EAD,, MEPSO, NOS BIH, TRANSELECTRICA, guest: HEP, MAVIR and TEAS. In case of unplanned disconnection of interconnection line, MEPSO informs neighbouring TSOs and taking actions to provide conditions for realizing the unplanned outage. Additional Questions Do you have subset of critical elements whose outages must be agreed in advance with neighbouring TSOs AUDIT QUESTIONNAIRE 2013 P4-A-S2.1 Critical elements. A subset of relevant elements which are considered to have a major influence on the operational management of the neighbouring systems has to be agreed among involved TSOs. The scheduling of the outages of these elements must be agreed among the TSOs involved on a regional basis This set must include at least the elements considered in the EXTERNAL CONTINGENCY LIST ((>>P3-A) determined by each of the TSOs involved in the region. Compliance Level: Page 14 of 38

15 Concise explanation and list of evidences for declared compliance level: D All interconnection lines are included in External contingency list and they are considered as critical elements. Planning outage of those lines is realizing on regional level before the begging of the year, as a main activity of SEE Maintenance group. Members of this group are: ATSO, CGES, EMS,,, MEPSO, NOS BIH, TRANSELECTRICA, guest: HEP, MAVIR and TEAS. In case of unplanned disconnection of interconnection line, MEPSO informs neighbouring TSOs and taking actions to provide conditions for realizing the unplanned outage. Do you have a mitigation plan to the standard? Yes No In case of an existing Addendum or a Non Compliance Declaration; list of evidences for a mitigation plan, comments: Additional Questions Do you have subset of critical elements whose outages must be agreed in advance with neighbouring TSOs? List of evidences, comments: - with nominated persons in SEE Maintenance Group -Excel table from SEE Maintenance Group with all 400 and 220 kv interconnections and internal lines agreed on between involved TSOs from SEE. Our list is consisted of all interconnections and all internal 400 kv lines. Every year MEPSO AD publish those list (excel table) on MEPSO website together with periods of disconnections COMPLIANCE AUDIT 2013 Compliance Level suggestion by the audit team: Explanation for the suggested compliance level: The critical elements list includes at least the external contingency list as included in the agreements with and. For all the 400 kv and 220 kv network elements (transmission lines and transformers 400/220 kv) are included in the external contingency list. For, the critical elements list is limited to few 400 kv lines in the north part of Greece. For EMS, information was shown regarding the external contingency list as exchanged between the two TSOs within the framework of the SEE Maintenance Group. Page 15 of 38

16 4.3 OH STANDARD P4-A-S3. EXCHANGE OF INFORMATION SELF-ASSESSMENT QUESTIONNAIRE 2012 P4-A-S3 Exchange of information. TSOs collect and share information about planned outages of the relevant elements within regional groups. The scheduled outages of critical elements are reviewed at the Weekly Operational Teleconference (>>B- S7: WOPT). Compliance Level: Explanation for the full compliance declaration: We take part in WOPT. In case we cannot connect, we sent information by . The Coordinator of SEE Maintenance group organizes the meetings. Additional Questions Do you collect and share the planned outages of all relevant elements (in the meaning of critical elements) within the WOPT or other kinds of information exchange (i.e. only with one partner)? AUDIT QUESTIONNAIRE 2013 P4-A-S3 Exchange of information. TSOs collect and share information about planned outages of the relevant elements within regional groups. The scheduled outages of critical elements are reviewed at the Weekly Operational Teleconference (>>B- S7: WOPT). Compliance Level: Concise explanation and list of evidences for declared compliance level: D We take part in WOPT. In case we cannot connect, we sent information by . The Coordinator of SEE Maintenance group organizes the meetings. Do you have a mitigation plan to the standard? Yes No In case of an existing Addendum or a Non Compliance Declaration; list of evidences for a mitigation Page 16 of 38

17 plan, comments: Additional Questions Do you collect and share the planned outages of all relevant elements (in the meaning of critical elements) within the WOPT or other kinds of information exchange (i.e. only with one partner)? List of evidences, comments: -Documents for WOPT exchanged between SEE TSOs via . Word doc with all needed information (Special flows on interconnectors, Planned outages of interconnectors, Planned outages of significant lines-lines in coordination of 9TSOs, Disturbances, Disturbances on interconnectors, Units in maintenance or outages, Climatic conditions / special loads / generation, Special days / bank-holidays, Voltages on bordering substations, Market conditions / exceptional prices/ balancing or balance power/ NTC values for operational teleconference. All those information are for the past week and for the coming week. -List of AUTHORIZED PERSONS in SEE Maintenance Group for COMPLIANCE AUDIT 2013 Compliance Level suggestion by the audit team: Explanation for the suggested compliance level: According to the 9 th Annual meeting of the regional Maintenance group (20 November 2012), EMS is the coordinator of the group in WOPT takes place every Thursday 10:00 CET. MEPSO provided evidences for the participation in WOPT prior to WOPT (e.g. from 5 September 2013). A template is used for this exchange. MEPSO explained that proposed changes in the annual maintenance planning are discussed in WOPT. However, no formal minutes are produced to summarize decisions taken during the teleconference. The coordinator updates the annual maintenance table in case of changes and distributes it. Page 17 of 38

18 4.4 OH STANDARD P4-A-S4.1. LONG-TERM PLANNING SELF-ASSESSMENT QUESTIONNAIRE 2012 P4-A-S4.1 Long-term planning. In the second half of the preceding year, TSOs start outages scheduling in regional groups for the forthcoming year. At the end of the preceding year, TSOs agree on a joint schedule of outages of all network elements impacting two or more TSOs for the next year. Compliance Level: Explanation for the full compliance declaration: MEPSO is a member of SEE Maintenance group (ATSO, CGES, EMS,,, MEPSO, NOS BIH, TRANSELECTRICA, guests: HEP, MAVIR and TEAS). This group is dealing with harmonization of maintenance schedule of the elements from regional (South East Europe) transmission network. Maintenance schedule for the year Y is harmonies till and of November in Y-1. For every year, different TSO (member) is a coordinator of the group which follows realization of the Maintenance schedule and informs all members about it. Additional Questions Do you have established a long-term respectively yearly operational outage planning? Do you have at the end of the year a jointly agreed list of planned outages of all relevant elements of all involved partners for the next year? AUDIT QUESTIONNAIRE 2013 P4-A-S4.1 Long-term planning. In the second half of the preceding year, TSOs start outages scheduling in regional groups for the forthcoming year. At the end of the preceding year, TSOs agree on a joint schedule of outages of all network elements impacting two or more TSOs for the next year. Compliance Level: D Concise explanation and list of evidences for declared compliance level: MEPSO is a member of SEE Maintenance group (ATSO, CGES, EMS,,, MEPSO, NOS BIH, TRANSELECTRICA, guests: HEP, MAVIR and TEAS). This group is dealing with harmonization of maintenance schedule of the elements from regional (South East Europe) transmission network. Maintenance schedule for the year Y is harmonies till and of November in Y-1. For every year, different TSO (member) is a coordinator of the group which follows realization of the Maintenance schedule and informs all members about it. Do you have a mitigation plan to the standard? Yes No Page 18 of 38

19 In case of an existing Addendum or a Non Compliance Declaration; list of evidences for a mitigation plan, comments: Additional Questions Do you have established a long-term respectively yearly operational outage planning? List of evidences, comments: D Harmonized Table of Annual maintenance schedule, for example Table for Minutes of the 9 th Annual Maintenance Meeting for 2013 Do you have at the end of the year a jointly agreed list of planned outages of all relevant elements of all involved partners for the next year? List of evidences, comments: D Harmonized Table of Annual maintenance schedule, for example Table for Minutes of the 9 th Annual Maintenance Meeting for 2013 COMPLIANCE AUDIT 2013 Compliance Level suggestion by the audit team: Explanation for the suggested compliance level: MEPSO presented the annual maintenance table as decided in the 9 th Annual Maintenance Meeting for 2013 of the Maintenance Group (20 November 2012). The minutes of this meeting were also presented. The maintenance schedule for MEPSO is published on MEPSO s website (presented to the Audit team). Page 19 of 38

20 4.5 OH STANDARD P4-A-S5. CONFIRMATION OF PLANNED OUTAGES SELF-ASSESSMENT QUESTIONNAIRE 2012 P4-A-S5 Confirmation of planned outages. Each TSO reviews and confirms the outages of relevant elements to involved neighbouring TSOs in the course of the week (but latest on Thursday because of the D-2CF process) before the week concerned during the WOPT (>>B- S7). Compliance Level: Explanation for the full compliance declaration: Confirmation for planned outages is 7 days before the executive day (day of outage), but no later than Friday before the planning week (week when the outage is realized), and the Coordinator inform all members. Communication is via . Additional Questions Can you ensure that you are able to send the information about the weekly operational outage planning usually latest on Thursday evening? AUDIT QUESTIONNAIRE 2013 P4-A-S5 Confirmation of planned outages. Each TSO reviews and confirms the outages of relevant elements to involved neighbouring TSOs in the course of the week (but latest on Thursday because of the D-2CF process) before the week concerned during the WOPT (>>B- S7). Compliance Level: Concise explanation and list of evidences for declared compliance level: D Confirmation for planned outages is 7 days before the executive day (day of outage), but no later than Friday before the planning week (week when the outage is realized), and the Coordinator inform all members. Communication is via . Page 20 of 38

21 Do you have a mitigation plan to the standard? Yes No In case of an existing Addendum or a Non Compliance Declaration; list of evidences for a mitigation plan, comments: Additional Questions Can you ensure that you are able to send the information about the weekly operational outage planning usually latest on Thursday evening? List of evidences, comments: - WOPT documents exchange via on Thursday for the next week. COMPLIANCE AUDIT 2013 Compliance Level suggestion by the audit team: Explanation for the suggested compliance level: The information exchange and the confirmation of planned outages is done within the WOPT framework. s exchanged were shown as examples by MEPSO (for the two weeks 5 September and 12 September 2013). According to Chapter 2.4 Confirmation of planned outages and information exchange of the minutes of the 9th Annual Meeting of the Maintenance Group: The Coordinator will send informing s to all TSOs about planned disconnections for each network element at the latest until Friday of the week before the week with the starting date of the disconnection. For the ongoing disconnections the concerned TSO has to announce to the teleconference regarding its status in the planned schedule.. Page 21 of 38

22 4.6 OH STANDARD P4-B-S2. CAPACITY ASSESSMENT SELF-ASSESSMENT QUESTIONNAIRE 2012 P4-B-S2 Capacity assessment. TSOs perform capacity assessments for different time frames and in advance of corresponding capacity allocation procedures. Those binding values are assessed on the basis of the TSOs best forecast. Compliance Level: Explanation for the full compliance declaration: MEPSO perform capacity assessments on Yearly and monthly base. To calculate the annual values of NTC, winter/summer reference models of continental Europe are used which are received by exchange of models within ENTSO E regional group of continental Europe. To calculate the monthly values of NTC of the power system of MEPSO, a regional model is used. This regional model contains the networks of South East Europe: APG, ATSO, CGES, NOS BIH,,, HEP, MAVIR, Transelectrica, Ukraine,, ELES and TERNA, including the 110 kv and 400 kv network of MEPSO. The remaining part of continental Europe is modeled with an appropriate equivalent connected on the border of MAVIR, APG, Terna and Ukraine AUDIT QUESTIONNAIRE 2013 P4-B-S2 Capacity assessment. TSOs perform capacity assessments for different time frames and in advance of corresponding capacity allocation procedures. Those binding values are assessed on the basis of the TSOs best forecast. Compliance Level: D Concise explanation and list of evidences for declared compliance level: MEPSO perform capacity assessments on Yearly and monthly base. To calculate the annual values of NTC, winter/summer reference models of continental Europe are used which are received by exchange of models within ENTSO E regional group of continental Europe. To calculate the monthly values of NTC of the power system of MEPSO, a regional model of SEE TSOs is used. This regional model contains the networks of South East Europe: APG, ATSO, CGES, NOS BIH,,, HEP, MAVIR, Transelectrica, Ukraine,, ELES and TERNA, including the 110 kv and 400 kv network of MEPSO. The remaining part of continental Europe is modeled with an appropriate equivalent connected on the border of MAVIR, APG, Terna and Ukraine. -Results of NTC calculation for each month with PSS/MUST software. Page 22 of 38

23 -Documents for agreement of respective NTC values with neighbouring TSOs. -Final Table with NTC/ATC values published on MEPSO website, for auctions of cross border transmission capacities for each allocation unit in both directions. Do you have a mitigation plan to the standard? Yes No In case of an existing Addendum or a Non Compliance Declaration; list of evidences for a mitigation plan, comments: COMPLIANCE AUDIT 2013 Compliance Level suggestion by the audit team: Explanation for the suggested compliance level: For the annual assessment Summer and Winter reference models produced by ENTSO-E are used. The minimum monthly NTC from the previous year is offered to the market; this is foreseen in the operational agreement between S.A and MEPSO AD (Appendix 21), operational agreement for Cooperation and Electrical Power Exchange over 400kV and 110kV Interconnection Lines between Electrical power Transmission Systems of Bulgaria and Macedonia (Appendix 30 ) and Memorandum for 2013 signed between EMS and MEPSO. MEPSO explained that for the monthly NTC calculation, TSOs in the SEE region exchange the power exchange table (base case exchange table). A regional coordinator (assigned monthly on a rotating basis) merges these tables to a common base case exchange table for the region. System models are also exchanged in UCTE format considering the common base case exchange table. The coordinator merges the system model into one. The above procedure is described in the RG SEE document Harmonization of methodology and procedure for ATC/NTC calculation for different timeframes (3 June 2013, draft, in signing process). Page 23 of 38

24 4.7 OH STANDARD P4-B-S3. HARMONISATION OF CAPACITY VALUES SELF-ASSESSMENT QUESTIONNAIRE 2012 P4-B-S3 Harmonisation of capacity values. Neighbouring TSOs have to harmonize the calculated capacity values on their common borders and region. In case there is no agreement on a common value, the lower value has to be used, as this ensures secure operation in both systems. Compliance Level: Explanation for the full compliance declaration: For each border, MEPSO bilaterally harmonize and agree the NTC values with neighbouring TSO. In case there is no agreement on a common value, the lower value is used. (Memorandum for NTC with and EMS, exchanged letters with ) Additional Questions Do you harmonize the capacity assessment for all the different time frames with the neighbouring TSOs or in the region? In case of variation between the values, do you use the lower value? (Expl. may be that the variation is less or more usual due to different assumptions or regulations) AUDIT QUESTIONNAIRE 2013 P4-B-S3 Harmonisation of capacity values. Neighbouring TSOs have to harmonize the calculated capacity values on their common borders and region. In case there is no agreement on a common value, the lower value has to be used, as this ensures secure operation in both systems. Compliance Level: Concise explanation and list of evidences for declared compliance level: D For each border, MEPSO bilaterally harmonize and agree the NTC values with neighbouring TSO. In case there is no agreement on a common value, the lower value is used. (Memorandum for NTC with and EMS, exchanged letters with ) Page 24 of 38

25 Do you have a mitigation plan to the standard? Yes No In case of an existing Addendum or a Non Compliance Declaration; list of evidences for a mitigation plan, comments: Additional Questions Do you harmonize the capacity assessment for all the different time frames with the neighbouring TSOs or in the region? List of evidences, comments: D -Operational Agreement concluded between S.A and MEPSO AD ( Appendix 21) -Operational Agreement for Cooperation and Electrical Power Exchange over 400kV and 110kV Interconnection Lines between Electrical power Transmission Systems of Bulgaria and Macedonia ( Appendix 30 ) -Memorandum for 2013 signed between EMS and MEPSO (point: Cross Bordet Capacity Evaluation and Appendix 1 of these Memorandum) -Exchanged letters with, EMS and and Published ATC tables for different time frames. In case of variation between the values, do you use the lower value? (Expl. may be that the variation is less or more usual due to different assumptions or regulations) List of evidences, comments: D Memorandum, Exchanged letters with, EMS and COMPLIANCE AUDIT 2013 Compliance Level suggestion by the audit team: Explanation for the suggested compliance level: The principle of selecting the lower NTC value is described in the operational agreements with all neighbouring TSOs. Examples (correspondence with all neighbouring TSOs) were shown to the audit team where the lowest NTC value was selected in cases of different NTC values were calculated by the neighbouring TSOs. Page 25 of 38

26 4.8 OH STANDARD P4-B-S4. PROCEDURE FOR THE CAPACITY ASSESSMENT SELF-ASSESSMENT QUESTIONNAIRE 2012 P4-B-S4 Procedure for the capacity assessment. Each TSO uses a coordinated and harmonized methodology with the neighbouring TSOs or in the region. The methodology must guarantee system security in the affected grids. It has to deliver available capacities satisfactory and reliable for the market. Compliance Level: Explanation for the full compliance declaration: According the procedure, in the process of simulation of transactions, two sub systems are established, one subsystem between MEPSO, and ATSO (importers) and second subsystem and Transelectrica (exporters). The NTC value on each interconnection is bilaterally harmonized and agreed between MEPSO and neighboring TSO. The agreed value is sheared 50%/50% between MEPSO and neighboring TSO and each TSO provide capacity auction of its part (50%) in accordance with his Auction rules. Additional Questions Do you have a common agreed procedure with all neighbors concerning capacity assessment? AUDIT QUESTIONNAIRE 2013 P4-B-S4 Procedure for the capacity assessment. Each TSO uses a coordinated and harmonized methodology with the neighbouring TSOs or in the region. The methodology must guarantee system security in the affected grids. It has to deliver available capacities satisfactory and reliable for the market. Compliance Level: Concise explanation and list of evidences for declared compliance level: D According the procedure, in the process of simulation of transactions, two sub systems are established, one subsystem between MEPSO, and ATSO (importers) and second subsystem, EMS and Transelectrica (exporters). The NTC value on each interconnection is bilaterally harmonized and agreed between MEPSO and neighbouring TSO. The agreed value is sheared 50%/50% between MEPSO and neighbouring TSO and each TSO provide capacity auction of its part (50%) in accordance with his Auction rules. Do you have a mitigation plan to the standard? Yes No In case of an existing Addendum or a Non Compliance Declaration; list of evidences for a mitigation Page 26 of 38

27 plan, comments: Additional Questions Do you have a common agreed procedure with all neighbours concerning capacity assessment? List of evidences, comments: -Operational Agreement concluded between S.A and MEPSO AD ( Appendix 21) -Operational Agreement for Cooperation and Electrical Power Exchange over 400kV and 110kV Interconnection Lines between Electrical power Transmission Systems of Bulgaria and Macedonia ( Appendix 30 ) -Memorandum for 2013 signed between EMS and MEPSO (point: Cross Bordet Capacity Evaluation and Appendix 1 of these Memorandum) -Exchanged letters with, EMS and and Published ATC tables for different time frames. COMPLIANCE AUDIT 2013 Compliance Level suggestion by the audit team: Explanation for the suggested compliance level: The coordinated and harmonized methodology for NTC calculations is described in the operational agreements as follows: (1) Appendix 21 of the Operational Agreement concluded between S.A and MEPSO AD (2) Appendix 30 of the Operational Agreement for Cooperation and Electrical Power Exchange over 400kV and 110kV Interconnection Lines between Electrical power Transmission Systems of Bulgaria and Macedonia (3) Appendix 1 of Memorandum for 2013 signed between EMS and MEPSO (section Cross Bordet Capacity Evaluation). ThThe above documents were shown to the audit team which examined the relevant parts. Page 27 of 38

28 4.9 OH STANDARD P4-B-S6. WEEKLY OPERATIONAL TELECONFERENCE SELF-ASSESSMENT QUESTIONNAIRE 2012 P4-B-S6 Weekly Operational Teleconference (WOPT). TSOs within regional groups organise a weekly teleconference call to share operational information regarding: Compliance Level: Explanation for the full compliance declaration: We exchange operational information as a part of activities of SEE Maintenance Group Additional Questions Do you share adequate amount of information during your weekly operational teleconferences, e.g. planned outages, special events, NTC, public holidays? AUDIT QUESTIONNAIRE 2013 P4-B-S6 Weekly Operational Teleconference (WOPT). TSOs within regional groups organise a weekly teleconference call to share operational information regarding: Compliance Level: Concise explanation and list of evidences for declared compliance level: D We exchange operational information as a part of activities of SEE Maintenance Group Do you have a mitigation plan to the standard? Yes No In case of an existing Addendum or a Non Compliance Declaration; list of evidences for a mitigation plan, comments: Additional Questions Do you share adequate amount of information during your weekly operational teleconferences, e.g. planned outages, special events, NTC, public holidays? Page 28 of 38

29 List of evidences, comments: -Documents for WOPT MEPSO exchange with SEE TSOs via . MEPSO exchange on time Word doc with all necessary information ( Special flows on interconnectors, Planned outages of interconnectors, Planned outages of significant lines-lines in coordination of 9TSOs, Disturbances, Disturbances on interconnectors, Units in maintenance or outages, Climatic conditions / special loads / generation, Special days / bank-holidays, Voltages on bordering substations, Market conditions / exceptional prices / balancing or balance power / NTC values for operational teleconference ). All those information are for the past week and for the coming week. -List of AUTHORIZED PERSONS in SEE Maintenance Group for Exchanged s with 9 TSOs, and on request we are able to present all s to Inspection Team. COMPLIANCE AUDIT 2013 Compliance Level suggestion by the audit team: Explanation for the suggested compliance level: The items listed in the standard are included in the template that is used in SEE region to exchange information during the WOPT, apart from the availability of generation reserves. An example of information exchange using this template was shown to the audit team. Page 29 of 38

30 4.10 OH STANDARD P4-B-S7. CALCULATION OF ATC VALUES SELF-ASSESSMENT QUESTIONNAIRE 2012 P4-B-S7 Calculation of ATC values. In case there is a joint capacity allocation procedure, TSOs calculate and harmonize the ATC values. Compliance Level: Explanation for the full compliance declaration: At all our borders, we calculated and harmonized NTC value with our neighbouring TSOs. The agreed value is sheared 50%/50% between MEPSO and neighbouring TSO and each TSO provide capacity auction of its part (50%) in accordance with his Auction rules AUDIT QUESTIONNAIRE 2013 P4-B-S7 Calculation of ATC values. In case there is a joint capacity allocation procedure, TSOs calculate and harmonize the ATC values. Compliance Level: Concise explanation and list of evidences for declared compliance level: D We have not introduced yet Joint capacity allocation procedure on our borders. At all our borders, we calculated and harmonized NTC value with our neighbouring TSOs. The agreed value is sheared 50%/50% between MEPSO and neighbouring TSO and each TSO provide capacity auction of its part (50%) in accordance with his Auction rules. Do you have a mitigation plan to the standard? Yes No In case of an existing Addendum or a Non Compliance Declaration; list of evidences for a mitigation plan, comments: COMPLIANCE AUDIT 2013 Compliance Level suggestion by the audit team: N/A Explanation for the suggested compliance level: The audit team considers that since there is no joint capacity allocation in place, the appropriate compliance level for this standard is N/A. Page 30 of 38

31 4.11 OH STANDARD P4-C-S2.1. NETWORK MODEL SELF-ASSESSMENT QUESTIONNAIRE 2012 P4-C-S2.1 Network model. Each TSO provides to the EH-ftp server a forecasted load flow data set of its grid, with the whole, detailed network model related to the transmission grid, i.e. a real model (no equivalents) of at least all elements at 220kV level like busbar couplers, nodes, lines, transformers, nodes load and injections. Equivalent or real lines and transformers can be used to represent networks of lower voltages, in case they influence the 750kV, 380 kv or 220 kv level significantly. Compliance Level: Explanation for the full compliance declaration: We sent full model with all 400 kv transmission elements included interconnection lines, and significant 110 kv elements. AUDIT QUESTIONNAIRE 2013 P4-C-S2.1 Network model. Each TSO provides to the EH-ftp server a forecasted load flow data set of its grid, with the whole, detailed network model related to the transmission grid, i.e. a real model (no equivalents) of at least all elements at 220kV level like busbar couplers, nodes, lines, transformers, nodes load and injections. Equivalent or real lines and transformers can be used to represent networks of lower voltages, in case they influence the 750kV, 380 kv or 220 kv level significantly. Compliance Level: Concise explanation and list of evidences for declared compliance level: D -We sent full Macedonian model via and to the EH-ftp server with all 400 kv transmission elements included interconnection lines, and all 110 kv elements. -On request on Inspection Team, we are able to present our exchanged detailed network models, related to the transmission grid. Do you have a mitigation plan to the standard? Yes No In case of an existing Addendum or a Non Compliance Declaration; list of evidences for a mitigation plan, comments: COMPLIANCE AUDIT 2013 Compliance Level suggestion by the audit team: Page 31 of 38