Research and Migration path on Active Network Management and intelligent Secondary Substations
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1 Research and Migration path on Active Network Management and intelligent Secondary Substations, Head of Research Group Industrial Networks IRED 2014, Kyoto siemens.at/future-of-energy
2 Agenda 1. Motivation Challenges for MV / LV Grids Smart Grid Migration Path Smart Grids Examples for Renewable Integration R&D projects MV - Active Network Management Field Trial Eyes in the LV Grid Smart LV Grid Control and Management 3. Summary Page 2
3 Agenda 1. Motivation Challenges for MV / LV Grids Smart Grid Migration Path Smart Grids Examples for Renewable Integration R&D projects MV - Active Network Management Field Trial Eyes in the LV Grid Smart LV Grid Control and Management 3. Summary Page 3
4 Challenges for MV / LV networks voltage problem in MV / LV networks asymmetrical load flows real peak load +10% U max potential voltage band violations overvoltage caused by (assymetrical) DG and/or load decentralized generation 230 V -10% U min dropping below lower limit due to loads/charging e-cars monitoring and management of voltage band become necessary standardized limits: nominal voltage (230V) +/- 10% Page 4
5 Challenges for MV / LV networks load flow problem in LV networks secondary substation cable (Imax = 355A) I 355A overloading R+jX R+jX R+jX R+jX ~ ~ 20A 20A 355A 375A 395A load flow management to protect network infrastructure become necessary limits: cable loading Page 5
6 Smart Grid Migration Path Smart Grid Migration Path Goal: Optimising of CAPEX + OPEX! Grid Monitoring Continous grid monitoring Data validation Topology mapping Efficieny gain without active control Big Data Business Analytics Operative and strategic grid planning Efficieny gain with active control Voltage Control Overload Control Automatic Switching Smart Market / Smart Grid / Smart Building interaction Page 6
7 Smartgrids 2.0 Future Active Network Management LV MV HV MV LV + LV Page 7 source: CIRED 2010, Session 5 Paper 0198 = Smartgrids 2.0
8 Agenda 1. Motivation Challenges for MV / LV Grids Smart Grid Migration Path Smart Grids Examples for Renewable Integration R&D projects MV - Active Network Management Field Trial Eyes in the LV Grid Smart LV Grid Control and Management 3. Summary Page 8
9 MV - Active Network Management Field Trial Important data: Field trial region Lungau, Salzburg Voltage: 30kV maximum load ~23 MW DG status quo ~5,6 MW additional DG ~ 6,6 MW Problems with voltage control Possibilities: conventional investment in grid (reference scenario) or intelligent voltage control additional Hydropower current Hydropower current Photovoltaic current Biomass St.Michael Tamsweg Page 9
10 MV - Active Network Management Field Trial Results: Active Network Management in a Control Center Solution DSSE U cal (1)... U cal (n) - Un ± 7% + Central voltage and var control (CVVC) Tap changer & DER control U 138 kv Technical Solution: 13.8 kv P, Q LTC I I I P, Q Fuse P 1, Q 1 Pi, Qi Cabel 0. 4kV P m, Q m Normal operation: Page 10
11 Eyes in the LV Grid : Results: Power Snap Shot Analysis by Smart Metering 1.00 DIgSILENT [p.u.] [m] St. Ko.. MU MU KK Leiter-Erde Spannung, Betrag L1 Leiter-Erde Spannung, Betrag L3 KK KK KK Leiter-Erde Spannung, Betrag L2 KK ISOLVES:PSSA-M Spannungsfall-Strang1 Datum: Anhang: /2 Smart Meters as eyes in the grid especially for unbalanced loads in the LV-grid as a four-wire system..! Source: Energie AG Oberösterreich Netz GmbH, A. Abart Page 11
12 Eyes in the LV Grid : Results: Advanced Metering, Grid Monitoring Device & Data Evaluation Tool Page 12 IRED 23.Mai 2014, 2014 Kyoto, Japan
13 Smart LV Grid Control and Management R&D and Field Tests in Upper Austria / Salzburg Smart LV Grid Konzepte Smart planning, monitoring, control Photovoltaic every 2nd roof Feld Test Gebiete Köstendorf/S Eberstalzell/OÖ E-Car every 2nd car Validation of solutions for future problems! Page 13
14 Smart LV Grid Control and Management R&D and Field Tests in Upper Austria / Salzburg Field Test Köstendorf / Salzburg Netz / Salzburg Page 14
15 Smart LV Grid Control and Management Results: R&D and Field Tests in Upper Austria / Salzburg Page 15
16 Smart LV Grid Control and Management Solution for automated intelligent Secondary Substation Node Components: 1 RTU e.g. Modbusconnection with MV FCM 2 Feeder Condition Monitor (in LV) 3 Power Quality Recorder (in LV) 4 USV 5 free space for Modem Page 16 IRED 23.Mai 2014, 2014 Kyoto, Japan
17 Smart LV Grid Control and Management Controllable Tap Changer within intelligent Secondary Substation Node Range of ratings up to 630 kva; highest voltage for equipment: 36 kv Low-voltage load regulation range in three steps Additional setting range on the high-voltage side for optimum operation Integrated IEC /101 und Modbus RTU Kommunikation The principle of switching under load in the low-voltage system A control unit clocks the triggering and deactivation of the contactors: I. Contactor at Bypass gets closed II. III. Faultless switch-over of the mechanical contactors with no unwanted peaks Bypass gets opened and the transformer is in the target position Page 17 IRED 23.Mai 2014, 2014 Kyoto, Japan
18 Smart LV Grid Control and Management Development of intelligent, distributed monitoring & control embedded Service Bus (esb) & Smart Grid Dashboard for distributed self organizing Monitoring and Control (R&D application) Scalable deployment if requested, massively distributed) without engineering effort Autonomous, self- contained control and monitoring solution (Web) Interfaces to other systems available Page 18
19 Agenda 1. Motivation Challenges for MV / LV Grids Smart Grid Migration Path Smart Grids Examples for Renewable Integration R&D projects MV - Active Network Management Field Trial Eyes in the LV Grid Smart LV Grid Control and Management 3. Summary Page 19
20 Summary From Research to Implementation to Migration Path Optimising of CAPEX + OPEX! R&D, Test systems & Field tests Implementation & Migration Path 1. Grid Monitoring 2. Efficieny gain without active control 3. Efficieny gain with active control Page 20
21 Thank you for your attention! Siemens AG Österreich Research & Technologies CT RTC Networks & Communication Industrial Networks Austria siemens.at/future-of-energy Page 21
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