Asset Management Business Update

Transcription

1 Asset Management Business Update Improvements through Asset Management Mark Davis, Director, Asset Management & AW October 29,

2 From Maintenance to Asset Management Maintain the System -Initial Focus Operate, Build and Maintain it. Assets from several utilities Major spend to improve the system (new assets) Managing our Assets Raising the Bar Maintenance & Renewals Basis Compliance emphasis Reliability improvements Risk based decisions Financial transparency Failure Rate (%) Age Vs Failure Rate (50% failure in 50 years) Age in Years 2

3 Current Operating Environment Increased Regulator Scrutiny.. Changing Times Vegetation Management Baltimore Gas & Electric - $180,000. MidAmerican Energy Company - $75,000. Bonneville Power Administration (BPA) - WECC comprehensive inspection of all critical bulk BPA transmission ROW. Feb 2008 Florida Power & Light Blackout fallout NERC Issued 3 Industry Wide Advisories Authorization Processes for Disabling Key Protection Relays Provisions to grid operators and planners for generator disconnects from grid. Each entity needs to perform a lessons learned analysis on the event. 3

4 Current Operating Environment Current NERC Impact 10 NERC standards currently apply FAC-003 Trans. Veg. Management Program FAC-008 Facility Ratings Methodology PRC-004 Analysis & Mitigation of Trans. & Gen. Prot. Sys. Misoperations PRC-005 Trans. & Gen. Protection Sys. Maint.& Testing PRC-008 Underfrequency Load Shedding Equip. Maint. Programs PRC-009 UFLS Performance Following an Underfrequency Event PRC-015 Special Protection System Data & Doc. PRC-016 Special Protection System Misoperations PRC-017 Special Protection System Maint. & Testing EOP-004 R2 R3.4 of Disturbance Reporting (partial) 3 additional NERC standards in process Resulting in 154 requirements & Measurements currently applied 4

5 Reliability Driven Improvements Arrowhead Weston Line January In Service Arrowhead, Stone Lake, Gardner Park (Weston) 345kV line energized January 23, 2008 Reliability Improvements Since 2007 line Increased transfer capability between MN and WI for about 500 MW Allowed deferred maintenance work to occur in spring of 08 Minimal impact for unplanned line outages Multiple N-2 voltage stability contingencies eliminated Supported commercial operation of Weston 4 unit Stone Lake supports non-atc northwest WI area Supported flow into MRO 5

6 Reliability Driven Improvements cont. Forced Outage Reduction Outage Cause Code Analysis 2008 Forced Outages Through August By Cause Code Number by Cause Code % 180 (5) Lightning Only 58% 64 67% 38 (3) Lines (4) Weather 73% 28 79% 85% 26 (9) Other (6) Unknow n 25 (7) Vegetation 91% 24 (1) Equipment 97% 100% 100% 24 (2) System Protect Misops 12 (8) External 2 (10) Oper. Action (Safety) 100% 80% 60% 40% 20% 0% Percent by Cause Code Outage Root Cause Analysis (as needed) Historical Mis-Ops Cause code analysis ( ) 6

7 Reliability Driven Improvements cont. Forced Outage Reduction (continued) Forced Outage Reduction Plan includes: Lightning Projects Line Equip./Galloping Mitigation Efforts Relay Verification Reviews Corrective Work Order Backlog Prioritization Post Construction Inspections Weekly Forced Outage Calls Human Error Performance Review Sponsored Information Exchanges Relay Testing Summit Reliability Summits Vegetation Management Summit 7

8 Reliability Driven Improvements cont. Vegetation Management is... Changing with the times Improvements Forestry Coordinator & Compliance Positions Slower patrols to view Off-ROW danger trees. T Line Corrective Maintenance (Find and Fix) ROW Condition Based Veg. Management Initiatives 2 Targeted Vegetation Management Projects 8

9 Reliability Driven Improvements cont. Risk-based Program Development Maintenance Program Critical Number Need for Maintenance Testing & Inspection Equipment specific Inspections are aligned Real Time Risk Calc s tied to EMS sys. Renewal Program Total Life Cycle & Statistical Probability of Failure AIM Process supports Total Asset Life cycle. Risk based Maintenance Program & Renewal Budgeting Breakers:CN Index CN /1/89 9/1/90 9/1/91 9/1/92 9/1/93 9/1/94 9/1/95 9/1/96 9/1/97 9/1/98 9/1/99 9/1/00 9/1/01 9/1/02 9/1/03 9/1/04 9/1/05 9/1/06 9

10 Reliability Driven Improvements cont. Industry Leadership in Transmission Owners & Operators Forum Vegetation Management Practices Group Focusing on practice improvements 10

11 Improving to Meet the Challenges Focusing on Reliability analysis & improvement initiatives Reducing our vegetation management risks Vegetation Management Coordinator Improved easement rights Additional focus on program Transmission Owner s & Operators Forum Leadership role Data & analysis based maint. & renewal decisions Compliance mindset Asset Management Compliance Position Compliance monitoring and oversight 11