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Update on NERC Event Analysis Process: Joint Guidance Committee Session - June 2012

This report provides an update on the NERC Event Analysis Process and highlights the findings from the Joint Guidance Committee meeting held on June 1, 2012. It summarizes data from October 2010 to May 2012, detailing 123 reportable events in WECC, including specific categories and causal factors. Key contributing factors to events include data failures, equipment failures, human error, and weather-related issues. The report outlines next steps for evaluating events and addressing recurring trends through various committees and initiatives.

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Update on NERC Event Analysis Process: Joint Guidance Committee Session - June 2012

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  1. Steve AshbakerDirector Operations Event Analysis Process update June 1, 2012 Joint Guidance Committee

  2. Event Analysis Update • NERC Event Analysis Process – February 21, 2012 • October 2010- May 2012 – 123 reportable events in WECC • 2010 – 12 Events • 2011 – 93 Events • 2012 – 18 events

  3. Event Analysis Statistics • 87 Category 1 Events • Loss of 3 or more BES elements • 33 Category 2 Events • Complete loss of EMS/SCADA • Loss of entire generating station • Voltage excursion > 10% • Loss of firm load 15 minutes • 2 Category 3 Events • 1 Category 4 Event

  4. WECC Event Causal Factors • Data Failures – 15 • Equipment Failure – 36 • Human Error - 57 • Weather Related – 11 • System Conditions - 4

  5. NERC Event Cause Codes • A1 Design/Engineering Problem • A2 Equipment/Material Problem • A3 Individual Human Performance • A4 Management Problem • A5 Communication • A6 Training Deficiencies • A7 Other Problems

  6. Event Analysis Next Steps • Use NERC CCAP to evaluate events • Use WECC committees to address recurring event trends • OTS/HPWG (events involving human error) • RWG (protection systems/RASRS events) • EMSWG/DEWG (EMS/SCADA events) • OPS (procedural) • PCC Groups (modeling and planning issues)

  7. Event Analysis Reports • WECC using NERC Report Templates • NERC (appendix A)Brief Report Template • Event Analysis Report Template • More detailed explanation of event needed in reports to effectively determine cause code

  8. Steve Ashbaker WECC Staff ashbaker@wecc.biz Questions?

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