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New York’s Electric Reliability Monitoring Utility Performance
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New York’s Electric Reliability Monitoring Utility Performance Mike Worden, Chief Distribution Systems Office of Electric, Gas & Water October 13, 2010
Transcript of New York’s Electric Reliability Monitoring Utility Performance
New York’s Electric ReliabilityMonitoring Utility Performance
Mike Worden, Chiefe o de , C eDistribution Systems
Office of Electric, Gas & WaterOctober 13, 2010
Overview of Presentation
New York’s Electric Structure
Monitoring Reliability of the Distribution and Transmission Systems
Reliability Performance Plans
Monitoring Extreme Events
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Basics of the New York Electric System
Service Providers:– 6 Major Investor-Owned Utilities6 Major Investor Owned Utilities– 2 Large Power Authorities– 47 Small Municipalities
4 Small R ral Electric Co ops– 4 Small Rural Electric Co-ops
Load: 34,000 MW at peakC– 17,000 MW in New York City and Long Island
F Extreme electric transmission congestion downstate
G ( )Generating capacity: 38,000 MW (summer)3
Electric Reliability
What we know about the reliability of New York’s transmission and distribution systems
• T & D systems are very reliable– NYC’s reliability is among the best in the nationy g
• Industry adherence to reliability standards• Weather can cause major disruptions
J 1998 I t hit N th N Y k– January 1998 - Ice storm hits Northern New York• Equipment failures can also cause major disruptions
– Washington Heights, Long Island City network outagesg g , g y g
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Reliability – Recent Trends
C i l d O&M di T&DCapital and O&M spending on T&D– Decreased in late 1990s/early 2000s– Rebounding now with utilities looking to upgrade infrastructure
Increased productivity and asset maximization– Automated switching and sectionalizing
Ad d t it i– Advanced system monitoring– Outage management systems/crew utilization– AMI/Smart Grid in the future
Workforce– Age/Retirements affecting overall levels and knowledge base
Aggressive training and recruiting programs– Aggressive training and recruiting programs
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S i St d dService Standards
Adopted in 1991 (updated in 2004)p ( p )
Establishes expected levels of service under typical operating conditions in regions– Measure for Frequency of interruptions (SAIFI)– Measure for Duration of interruptions (CAIDI)– Excludes “Major Storms” (10%+ customers out or >24 hrs) to j ( )
normalize data for year to year comparisons
Setting appropriate targetsg pp p g– Primarily based on historic performance and trends – Geographic and technology conditions– Demographics and customer expectations– Allow more room for yearly variability in smaller regions– Set like targets in similar regions for benchmarking
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Service Standards
Statutory requirement for interruption data monthly and by cause (equipment failure, lightning, tree contacts, accident, etc.)contacts, accident, etc.)
Power quality requirements– Voltage supply levels (ANSI C84.1-1995)Voltage supply levels (ANSI C84.1 1995)– Momentary interruptions and other power quality events by cause
Annual report by utilities– Analysis of interruption data– Identify worst performing circuits– Future plans and corrective actions based on performance
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Statewide Historical PerformanceStatewide Historical PerformanceOutage Frequency
0.80
0.60
FI
0 20
0.40
SAIF
0 00
0.20
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0.002000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Statewide Historical PerformanceStatewide Historical Performance
Duration of Outages
2.60
1.80
2.20
IDI
1.00
1.40CAI
0.602000 2001 2002 2003 2004 2005 2006 2007 2008 2009
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Reliability Performance Plans
The 6 major investor-owned utilities in New York have performance based incentive plansperformance based incentive plans
The plans are independent and designed to prevent deterioration in reliabilitydeterioration in reliability
Reliability targets are based on frequency and duration measures on a company wide basismeasures on a company-wide basis
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Reliability Performance Plans
Plans may target certain areas for improvements
Examples:
– Momentary interruptions by voltage class (distribution, sub-transmission transmission)transmission, transmission)
– Network major outage mechanism
E h d i i– Enhanced tree trimming
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Reliability Performance Plans
F ili t t t t lt i tiFailing to meet targets results in negative revenue adjustments (total exposure ranges from $1M to $112M based on company’s plan)p y p )
Summary of recent actions:– 2009 All targets metg– 2008 Two targets missed- $5 million– 2007 Two targets missed- $22 million
Some plans may contain language to increase dollar exposure if a target is missed on a continued basis
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El t i S f t d R li bilit St d dElectric Safety and Reliability Standards
Inspection requirementsInspection requirements– Visually inspect 20% of utility structures per year– All structures must be visually inspected within 5 years– Underground facilities required to be opened
All utilities use common grading system with defined i t tirepair expectations
– Level 1- repair within 1 week– Level 2- repair within 1 yearp y– Level 3- repair within 3 years
Time requirement for permanently repairing q p y p gtemporary fixes made during storms or other emergency responses 13
Extreme Events
Utilities must file emergency plans detailing mitigationUtilities must file emergency plans detailing mitigation and restoration activities
T k i t ti i t tiTrack interruptions using an emergency outage reporting system– GIS based
Tied to utility outage management systems– Tied to utility outage management systems– Basis for allocating state resources– Prepare maps, reports, and charts
Open communication during an event – PSC Staff reports to State coordinating office– Outage info shared to help other agencies plan workOutage info shared to help other agencies plan work
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Extreme Events
EXAMPLEEXAMPLE
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