New York State Energy Planning Board Final Draft New York State - - PowerPoint PPT Presentation

New York State Energy Planning Board

Final Draft New York State Transmission and Distribution System Reliability Study and Report

Erin Hogan, NYSERDA August 30, 2012

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• Introduction and Overview
• Transmission System Reliability
• Distribution Reliability
• Investment and Expenditures
• Environmental Regulations
• T&D Reliability Impacts from Policy
• Future T&D Reliability Issues
• Key Findings and Recommendations

T&D Reliability Study Highlights

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Overview of The Electric System

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New York State High Voltage Transmission

4 Source: NYISO, 2012

HVDC

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Transmission System Reliability

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Reliability Oversight

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FERC

NYISO Generators Other Suppliers Transmission Owners

NPCC

NYSRC PSC

NERC

Distribution System Reliability

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Distribution Reliability Metrics

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Customer Average Interruption Duration Index (CAIDI) Number of Customer Hours/ Number of Customers Affected System Average Interruption Frequency Index (SAIFI) Number of Customer Affected/Number of Customers Served

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Distribution Performance

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0.00 2.00 4.00 6.00 8.00 10.00 12.00 2007 2008 2009 2010 2011 Radial With Storms Radial W/O Storms Network

CAIDI for Radial and Network

0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2007 2008 2009 2010 2011 Radial With Storms Radial W/O Storms Network

SAIFI for Radial and Network

Investment and Expenditures

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Utility Capital Expenditure ($000s)

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500,000 1,000,000 1,500,000 2,000,000 2,500,000 3,000,000 Nominal $ x 1,000 Actual Planned

Source: DPS

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Electric O&M Expenses ($000s)

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200,000 400,000 600,000 800,000 1,000,000 1,200,000

Nominal $ x 1,000

Transmission Distribution

Source: DPS

Environmental Regulations

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Environmental Regulations

• Existing Rules

– NOx RACT Rule – Best Available Retrofit Technology (BART) Rule – Utility MACT Rule – Best Technology Available (BTA) Policy

• New and Future Rules

– Cooling Water Intake Structures – Coal Combustion Residuals – CO2 Emission Allowance

Impacts to Reliability

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Reliability Impacts From Policies

• Load

– Energy Efficiency – Large Load Growth – Other Load Varying Mechanisms

• Generation

– Renewable Portfolio Standard – Distributed Generation

• Transmission & Distribution

– Bulk Electric System Definition – Performance Rate Making, Multi-Year Rate Agreements, and

• ther Departures from Traditional Regulatory Mechanisms
• Regulatory

– Corporate Reorganization of Electric Utilities

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Possible Future Reliability Issues

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Generation

• Retirements
• Environmental Initiatives
• Nuclear Relicensing
• Market Conditions
• Results
• Fuel Mix Issues/Supply

Diversity

• Increases natural

gas/electric interdependence and need for coordination

Load

• Variations
• Smart Grid and Emerging

Technologies

• Electric Vehicles
• Results
• Transition for both

technology and process poses challenges

• Implemented correctly,

new technologies could

• ptimize asset use and
• perational efficiency

External Forces

• Sources
• Security Threats
• Geomagnetic

Disturbances

• Aging Workforce
• Issues
• Risks known and

estimated

• Mitigation measures

developed

• Effectiveness unknown

Transmission

• Aging Infrastructure
• 2,300 miles over the next

10 years are nearing design life

• 1,200 additional miles in

next 10 to 20 years

• Results
• Increases maintenance

and downtime

• Increases risk from

unavailability

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Key Findings and Recommendations

• As assessed using existing metrics, the electric system meets

reliability standards

• Allow system planners and operators flexibility in their

response to implement state policies

• Support cost-effective replacement of aging infrastructure
• Support diverse mix of electric generation fuel sources
• Monitor gas/electric interdependence
• Encourage workforce development
• Support distributed generation technologies
• Improve storm mitigation, restoration, and communication

Questions?