Webinar Series: Reduction of Unknown Outages and Misoperations Session 3: Management Involvement W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
2 Welcome • Webinar is being recorded • All attendees are muted upon entry. To unmute yourself either: – Press *6 on your telephone – Click the microphone icon on your webex panel (red means muted) W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
3 Issue Identified WECC identified issue with unknown transmission outages and protection system misoperations. W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
4 Western Interconnection Transmission Outages Protection System Misoperations W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
5 Distribution of Entities Transmission Outages Protection System Misoperations W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
6 Poll WECC is considering a survey and report process that would provide entities with their unknown rates and how they compare to their peers, would you be interested in participating? • Yes • No • N/A (not a WECC entity or have already participated in an earlier poll) W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
7 Best Performers • AltaLink • Portland General Electric Company • Arizona Electric • Public Utility Power Cooperative District No. 2 of • Bonneville Power Grant County, Administration Washington • Comisión Federal • Salt River Project de Electricidad • Seattle City Light • Imperial Irrigation • Tri-State Generation District and Transmission • Pacific Gas and Association Electric Company • Tucson Electric • Platte River Power Power Authority W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
8 Summary of Entities Practices 18 practices across 4 themes W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
9 Webinar Series • Session 1: Process and Documentation – Bonneville Power Administration – AltaLink W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
10 Webinar Series • Session 2: Outage Analytics – Portland General Electric – Tucson Electric Power W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
11 Webinar Series • Session 3: Management Involvement – Platte River Power Authority – Arizona Electric Power Cooperative W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
Platte River Power Authority Tyson Archie, Compliance Specialist W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
13 PRPA Overview • Municipally-owned generation & transmission utility • Located in northern front range of Colorado • 403 miles of 115 kV and 230 kV transmission lines • 26 substations • 247 employees W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
14 Management Involvement • Preliminary Disturbance Report distributed to Protection Engineers, Engineering Managers, Compliance Dept as well as Senior Management • Ensures all levels of organization are aware an operation/event has occurred • Initiates investigation and compliance tracking activities W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
15 Becomes High Priority • Standard practice to conduct an immediate line patrol and investigation • Substation maintenance, system operations, and engineering department work together to return system to normal as soon as possible 3 rd party review on misoperations • before Unknown Cause can be reported W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
16 Process Documentation • All operations are investigated using documented policies and procedures. Reports are drafted and delivered to management • Metrics and Performance Goals listed in Disturbance Analysis Procedure that correlate to WECC Risk Factor Criteria • Practices have evolved over several years W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
17 Culture • Longstanding culture of promoting reliability • Continued investment in infrastructure as well as proactive maintenance schedule allows systems to operate at a high level • Management engaged in processes and decision making • Ownership from all levels in keeping outages and especially unknown outages to a minimum W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
18 Relay Replacement • Unknown Outage during blizzard last Spring • Existing electro-mechanical differential transformer relay misoperated due to a transmission line fault Thorough internal investigation as well as 3 rd party review • • No cause could be determined • Management agreed that upgrading relay to microprocessor type was appropriate corrective action for system reliability, and to allow additional data gathering for future operations • Multiple departments rearranged schedules to accommodate relay upgrade in a timely manner W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
19 Questions W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
Arizona Electric Power Cooperative John Shaver Operations Reliability Compliance Administrator W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
21 Disturbance Resolution Misoperation Identification • Disturbance occurs – System Operators respond accordingly. – System Operators notify appropriate entities and personnel. – Actions are taken to return system to normal. • Analysis of disturbance begins – Preliminary disturbance report is created. – Distributed to management, field engineers, operations engineer, and affected member cooperative(s). W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
22 Disturbance Resolution Misoperation Identification • System Control Manager reviews – Consults with System Operators. – Responds to initial inquiries from member cooperative(s). • Engineering Analysis – Determine root cause of disturbance. • Weather • Foreign interference • Equipment Failure • Misoperation • Human Error, etc. W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
23 Playful Foxes Cause Major Outage W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
24 Disturbance Resolution • Resolve Identified Issues – Modify relay settings, if necessary. – Make repairs to equipment, if necessary. – Review lessons learned from outage. – Determine and implement preventive measures, if appropriate. – Provide training, if necessary. W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
25 Disturbance Resolution • Operations Engineer creates final disturbance report – Receives input from all appropriate departments. – Interacts with members during the process. • Final disturbance report is complete – Report distributed to affected entities. – Shared with appropriate departments. – Applicable reporting is completed (e.g. TADS). W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
26 Disturbance Resolution • Accountability – Director of System Operations presents all disturbances and associated resolutions from previous month at monthly board meeting. – All concerns are addressed. – Input from members is considered and implemented, if appropriate. W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
27 Disturbance Resolution • Approach to disturbance resolution – All disturbances expected to be resolved and finalized within a month of occurring. – Accountability from membership drives the resolution process. – “Unknown” is not an option. W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
28 Questions Recordings: https://www.wecc.biz/Administrative/Reduction%20of%2 0Unknown%20Outages%20Webinar%20Recording%20Link s.pdf Webinar content questions: Maggie Peacock (801) 819-7621 mpeacock@wecc.biz W E C C E S T E R N L E C T R I C I T Y O O R D I N A T I N G O U N C I L
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