Transcript Presentation by Darius Vaiciunas, COLLUS Power (ppt format)

Distributed Generation
&
Distribution Companies
Darius Vaiciunas
Collingwood
OPTIONS
• No interconnection
• Isolated DG operation with
automatic transfer between the
DG and the grid
• Parallel operation with grid, no
power export
• Parallel operation with grid with
power export
Basic Principals
•
Safety
• the operation of the interconnected
generator should not pose any
unreasonable safety hazard to utility
equipment, customer equipment, or
human beings (including utility
personnel and the public).
Basic Principals
•
System stability / reliability
• the interconnected generator should
not seriously degrade the quality of
power or reliability for the utility
system or for the customers connected
to that system.
• Reverse power flow
•
Rule of thumb < 15% of the total load on
the feeder
• Over-current protection systems
• Fuse / Breaker Coordination
Basic Principals
•
Power quality
• injection of power into the utility
system from the generator will not
cause voltage excursions (steady state
or otherwise) that result in out-ofrange feeder voltage conditions,
objectionable voltage flicker, or
improper operation of utility system
equipment or customer loads.
STANDARDS
Locations working on Interconnection
Standards:
• MOE (Provincial)
• Texas
• NRC (Federal)
• New Mexico
• New York
• North Carolina
• Massachusetts
• Vermont
• New Hampshire
• California
ISSUES
•
Metering
• Should reflect interconnection
• No Export vs. Export Capabilities
•
Net Metering
• Measuring the difference between
electricity delivered to a
customer/generator and supplied
by a customer/generator at the
same point of interconnection
ISSUES
•
•
•
•
•
Distributor potential loss of revenue
Impact augmented by rate freeze
Standby Capacity requirements for
Consumer/Generator
Review of Distribution Rate Design
process
Adversarial approach counterproductive