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Margarett Jolly DG Manager, Consolidated Edison Company of New York, Inc
Margarett Jolly DG Manager,
Consolidated Edison Company of New York, Inc
Consolidated Edison Company
Con Edison’s Infrastructure Delivers Energy To New York City And Westchester
• 3.3 million electric customers • 1.1 million gas customers • 1,800 steam customers • 690 MW of regulated generation • 36,000 miles of overhead transmission and distribution lines
• 94,000 miles of underground transmission and distribution lines
• 4,300 miles of gas mains • 105 miles of steam mains and lines
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Con Edison’s Infrastructure Delivers Energy To New York City And Westchester
690 MW of regulated generation
transmission and distribution lines
transmission and distribution lines
Our Challenge ‐ as Load Increases!
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as Load Increases!
Con Edison’s has been a leader in promoting Energy Efficiency…
History • 1971: Save‐A‐Watt program – 200 MW reduction
• 1988 – 1998: Enlightened Energy program 740 MW reduction
Current – EE and DR programs • Heating, Ventilation and Cooling Program • Targeted Demand Side Management Program • Central Air Conditioning Program • Oil to Gas Conversions • Small Business Direct Installation Program • Various Demand Response • Ongoing Energy Efficiency Portfolio Proceedings
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Con Edison’s has been a leader in promoting
200 MW
program –
Heating, Ventilation and Cooling Program Targeted Demand Side Management Program
Small Business Direct Installation Program
…and is becoming a leader in integration of clean and renewable Distributed Generation
Initiatives in place and being developed
• Regional Greenhouse Gas Initiative (RGGI) • New York State
– Net metering – Renewable Portfolio Standard (RPS)
• New York City – plaNYC 2030 calls for 800 MW of distributed
generation resources by 2030
– DOE/Solar America Initiative – First Commercial Net meter customer in a
Networked grid
– NYPA 100 MW RFP and NYC 2 MW RFP 5
…and is becoming a leader in integration of clean and renewable Distributed Generation
Initiatives in place and being developed
Regional Greenhouse Gas Initiative (RGGI)
plaNYC 2030 calls for 800 MW of distributed
First Commercial Net meter customer in a
NYPA 100 MW RFP and NYC 2 MW RFP
Distributed Generation in CECONY
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Technology MW
Internal Combustion Engine 118.0
Combustion Turbine 82.3
Steam Turbine 43.5
Hydroelectric 2.0
Fuel Cell 3.5
Microturbine 5.0
Photovoltaic 3.0
Total 257
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Distributed Generation in CECONY
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%
118.0 46%
32%
17%
1%
1%
2%
1%
100%
Historic Distributed Generation Interconnections
• Emergency network support
– Substation Support
– WTC Network
• Emergency Backup for Critical Loads
– Hospitals, Water and Sewage Treatment, Prisons
• Typically diesel generators dedicated to critical loads
• Not parallel or with intricate protections schemes
• Large customers
– Familiar with ConEd specifications
– Interconnection requirement costs proportionally not prohibitive
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Historic Distributed Generation Interconnections
Emergency Backup for Critical Loads
Hospitals, Water and Sewage Treatment, Prisons
Typically diesel generators dedicated to critical loads
Not parallel or with intricate protections schemes
Interconnection requirement costs proportionally not prohibitive
Current DG Interconnections
• More and smaller customers interconnecting
– Increase in self supply and peak shaving
• Protection tailored to each interconnection
• Increase in smaller CHP installations
– Increased inverter based solar
• Expanding ConEd and NYISO markets for DSR
– Demand response & ancillary services (reserves, VAR support, blackstart
capability)
– ‘Physical Assurity’ required for load forecasting
– Communications, dispatch, and M&V are Key
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Current DG Interconnections
More and smaller customers interconnecting
Increase in self supply and peak shaving – in addition to emergency backup
Protection tailored to each interconnection
Increase in smaller CHP installations
Expanding ConEd and NYISO markets for DSR
Demand response & ancillary services (reserves, VAR support, blackstart
‘Physical Assurity’ required for load forecasting
Communications, dispatch, and M&V are Key
DG Facilitated through Continued Enhancements
• Helping our customers understand the playing field
– DG website – DG technical expert and DG ombudswoman
– Interconnection seminars
• Interconnection technology advances also facilitate interconnect – Current Limiting Protection (CLiP)
– dc Link
• Expanding our customer outreach efforts and stakeholder involvement
– DOE/EPRI projects – Partnering with City, CUNY. – Communications and operating protocols for DG participation
– Online Application Process – January 2010
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DG Facilitated through Continued Enhancements
Helping our customers understand the playing field
DG technical expert and DG ombudswoman
Interconnection technology advances also facilitate interconnect
Expanding our customer outreach efforts and stakeholder involvement
Communications and operating protocols for DG participation
January 2010
www.coned.com/dg
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www.coned.com/dg
Electric Power Delivery Overview
Generating Station (electricity generated at 13.8 to 22.0 kV)
Transformers (voltage stepped up to transmission voltage)
Transmission Substation
Feeders
Connection To Others
Network Customers (residential, commercial, industrial, hospitals, schools, and street and traffic lights)
Transmission
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Electric Power Delivery Overview
Transmission Substation
Area Substation (voltage stepped down to distribution voltage)
Transformers (voltage stepped down to 480, 208, or 120 V)
Feeders
Radial Customers
Transmission Distribution
Manhattan Electric Distribution Networks
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Manhattan Electric Distribution Networks
Network System
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Network System
Network System
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Network System
Network Grids Flow
13 kV Feeder
120/208 volt grid
Area Substation
A B C D E
15 15
Fault Protections and Reverse Power
13 kV Feeder
120/208 volt grid
Area Substation
A B C D E
X
16 16
Fault Protections and Reverse Power
Network Protector Operation due to DG
13 kV Feeder
120/208 volt grid
Area Substation A B C D E
Network Protector Operation due to DG
DG
DG
Export and Islanding Concern
13 kV Feeder
120/208 volt grid
Area Substation A B C D E
TB1
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Export and Islanding Concern
TA1 TA2
TB1
TC1 TC2
TD2
TE2
TE2 TE1
TD1
DG
Network Protector
Network protector
Transformer
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Network Protector
Transformer
Potential Impacts of DG on system
• Interference with the operation of protection systems
• Increased fault duty on company circuit breakers
• Islanding – System restoration – Power system stability
• Power Quality – Harmonic distortion contributions – Voltage flicker
Potential Impacts of DG on system
Interference with the operation of
Increased fault duty on company
Harmonic distortion contributions
Developing Communication and Control Technologies
• Expected to address existing concerns – Coordination protection schemes
– NWP operation
– Fault current mitigation
– Power quality
– System restoration
– Dispatch and control
–Measurement and verification
Developing Communication and Control Technologies
Expected to address existing concerns Coordination protection schemes
Fault current mitigation
Measurement and verification
Technology Trends in the Present DG Landscape….
• Con Edison – Substation breaker upgrade program
– Fault current limiter technology at substation
– DC Link technology
– DOE/NYSERDA/Verizon communications & dispatch pilot project
– Smart grid communications backbone testing
• Customer side
– Inverter based distributed generation
– Fast fuse and fast switch technologies
– Metering, home area networks, etc.
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Technology Trends in the Present DG Landscape….
Substation breaker upgrade program
Fault current limiter technology at substation
DOE/NYSERDA/Verizon communications & dispatch pilot project
Smart grid communications backbone testing
Inverter based distributed generation
Fast fuse and fast switch technologies
Metering, home area networks, etc.
Potential Demand Side Management Data Processing
NYISO
Retail Customer
Retail Customer
Building Forecast Model
RTU
Potential Demand Side Management Data Processing
DRCC
Con Edison
Retail Customer
Retail Customer
Retail Customer
TO
Future Interconnection Landscape DR and DG Integral to the Con Edison Distribution system
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Future Interconnection Landscape DR and DG Integral to the Con Edison Distribution system
Margarett Jolly DG Projects Manager
Consolidated Edison Company of New York, Inc
[email protected] 2124603328
Consolidated Edison Company
