Transcript Maine 2013 Outage Coordination

OCTOBER 2, 2013
Maine 2013 Outage Coordination
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Agenda
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Welcome, Introductions and Safety
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Expectations and Goals for Meeting
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MPRP Project Update
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Other CMP/BHE Projects
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Specific Outage Discussion, Key Fall 2013/Spring 2014 outages
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Questions
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Expectations/Goals
• Communicate significant planned 2013 Maine transmission
equipment outages that could impact generation constraints
• Communicate specific outage coordination changes to limit
impact on potential generation constraints
• Respond to outage coordination questions from the audience
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MPRP Project Statistics
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452 miles of new or rebuilt 345kV and
115kV Transmission
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5 new Greenfield Substations
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183 miles of new 345kV Transmission
105 miles of new 115kV Transmission
5 miles of Rebuilt 345kV Transmission
140 miles of rebuilt 115kV Transmission
8 miles of rebuilt 34.5kV Sub Transmission
11 miles of 345kV and 115kV line terminations
Albion, Coopers, Monmouth, Larrabee, Raven
6 Major Substation expansions
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Maguire, South Gorham, Surowiec, Gulf Island, Belfast,
Livermore Falls
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50 Remote end substation expansions or
modifications
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60 - Transmission line crossings
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Northern Loop Construction
• Construction Status
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Albion Road Substation energized
All 115kV lines terminated into station
Construction of new 345kV line from Orrington to Albion Road
Various 115kV rebuilds
• Near term construction activities
– Continued rebuild of two new 115kV lines and construction of a new
115kV line
– Mechanical completion of Coopers Mills Road Substation
• Future construction activities
– Completion of 115kV construction
– Construction of new 345kV line
– Energization of Coopers Mills Road Substation
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Central Loop Construction
• Construction Status
– Larrabee Road Substation energized
– Construction of new 345kV line from Larrabee Road to Surowiec
– Various 115kV rebuilds
• Near term construction activities
– Continued rebuild of two new 115kV lines and construction of a new
115kV line
– Energization of Gulf Island Substation
– Energization of Livermore Falls Substation
– Mechanical completion of Coopers Mills Road Substation
• Future construction activities
– Completion of 115kV construction
– Construction of new 345kV line
– Energization of Coopers Mills Road Substation
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Southern Loop
• Construction Status
– Raven Farm Substation mechanical completion
– Various 115kV rebuilds
• Near term construction activities
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Continued construction of 345kV line from Surowiec to Raven Farm
Energization of Raven Farm Substation
Mechanical completion of Maguire Road Substation
Energization of Surowiec Substation expansion
• Future construction activities
– Completion of new 345kV line
– Energization of Maguire Road Substation
– Final energization of Eliot Substation
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CMP/BHE Capital and Maintenance Work
• Other Non-MPRP CMP Capital and Maintenance Work that
affects the transmission system
– Transmission Line Structure Replacements both Capital and
Maintenance
– System Planning related Substation rebuilds or expansions to support
future reliability needs
– Substation equipment replacements or upgrades to address
maintenance concerns
– Transmission Line re-rates or rebuilds to increase capacity
– Substation maintenance equipment inspections and relay testing
– Regulatory required relay and equipment trip checks
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CMP Outage Applications
• Central Maine Power had 1,200 outage applications in 2012
• There have been 1,244 transmission (>34.5kV) and 641 subtransmission (34.5kV) outage applications in 2013
• The MPRP Project has submitted 761 outage applications for
the project through October 2, 2013
• The outages range in duration from a few hours to eleven
months in length
• The MPRP team anticipates that there will be an additional
500 – 600 outages needed to finish the program
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Maine 2013 Transmission Outages
• Changes to plan typically result in increased construction cost
– Costs include overtime, additional contractor resources, expedited
material, additional engineering and outage coordination resources,
environmental mitigation, schedule and remobilization costs,
permitting, etc.
• Outages that have the potential for significant impact to
generators in 2013 will be discussed
– Long (greater than one week) duration outages
– Significant potential generation constraints
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TRANSMISSION SYSTEM LIMITATIONS
All facility in and single facility out conditions
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Transmission System Limits Impact On
Generation Constraints
• Two categories of transmission system interface limits
• Wide Area – 13 Interfaces
– Typically Include 345 kV and 115 kV facilities
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New Brunswick to New England Interface
New England to New Brunswick Interface
New England to New Brunswick + Keene Road Export Interface
Orrington South Interface
Orrington North Interface
Orrington Import Interface
Maine Yankee South Interface
Surowiec South Interface
Maine to New Hampshire Interface
New Hampshire to Maine Interface
Seabrook South Interface
Northern New England Scobie & 394 Interface
North to South Interface
– All lines in limits typically range from
– Single Line Out Limits typically reduce limits by
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Transmission System Limits Impact On
Generation Constraints
• Local Area - 7 Interfaces
– Typically include 115 kV facilities
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Keene Road Export Interface
Bangor Hydro Export Interface
Keene Road + Bangor Hydro Export Interface
Wyman Hydro Export Interface
Inner Rumford Export Interface
Outer Rumford Export Interface
Western Maine Export Interface
– All lines in limits typically range from
– Single Line Out Limits typically reduce limits by
– Most significant recent generations constraints have been from local
area constraints
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2013 Maine Major Outages
• 115 kV Outage Condition B Western Maine
– 3rd Qtr 2013 – 4th Qtr 2013 ~ 3 month duration
– 1st Qtr 2014 ~ 2 week duration
• 115 kV Outage Condition C Western Maine
– 3rd Qtr 2013 ~ 3 week duration
• 345/115 kV Outage Condition F Northern Maine Area
– 4th Qtr 2013 ~ 1 week
• 345 kV Outage Condition G Northern Maine Area
– 3rd Qtr 2013 ~ 1 week
• 345 kV Outage Condition H Northern Maine Area
– 4th Qtr 2013 ~ 2 weeks
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2013 Maine Major Outages (cont.)
• 345 kV Outage Condition I Northern Maine Area
– 3rd and 4th Qtr 2013 ~ 4.5 weeks
• 345/115 kV Outages Condition J Southern Maine Area
– 3rd Qtr 2013 – 4th Qtr 2013 ~ 2.5 months
• 115 kV Outages Condition K Central Maine Area
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Multiple outages
4th Qtr 2013 ~ 3 weeks
1st Qtr 2014 ~2.5 months
2nd Qtr 2014 ~ 3 weeks
• 345 kV Outage Condition L Northern Maine Area
– 1st and 2nd Qtr 2014 ~ 7 weeks
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115 kV Outage Condition B Western Maine –
Original Plan – 1st Outage
• 115 kV Outage Condition B Western Maine originally planned
to go on outage sequentially over 11 months in 2011
– Interface limits
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Inner Rumford Export Interface
Outer Rumford Export Interface
Wyman Hydro Export Interface
Western Maine Export Interface
– Some generators have Do Not Exceed (DNE) Limits
– Rumford Power Associates (RPA) generation would not have been able
to operate
– Determined to be too large of an impact to generation, alternatives
needed to be pursued
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115 kV Outage Condition B Western Maine –
Alternatives – 1st Outage
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Purchase additional ROW to eliminate/reduce duration of outages
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Utilize more expensive construction techniques to reduce duration of Outage
Condition B by 2 months
– Too expensive for project
– Siting and permitting delays
– Implemented
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Utilization of a temporary SPS to increase limits for both outages
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RPA installed a Power System Stabilizer
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Do not take outages during the summer months
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Re-sequence work in order to implement alternatives
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Updated generator dynamic models received
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Eliminated Western Maine Export Interface limit
Increased Inner Rumford Export Interface limit
Increased Outer Rumford Export Interface limit
RPA could operate
Implemented
– Increases interface limits that are a limited by damping
– System operational capacity needs
– Outage was delayed more than 12 months
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115 kV Outage Condition B Western Maine –
Current Plan – 1st Outage
• 115 kV Outage Condition B Western Maine planned to go non sequentially
– Reduced outage duration by 2 months
– Interface limits
• Inner Rumford Export Interface
• Outer Rumford Export Interface
• Wyman Hydro Export Interface
– Evolves with parts of MPRP I/S
• Western Maine Export Interface
– Some generators have DNE Limits
– Rumford Power Associates generation is now able to operate
• Do not take outages during the summer months
– System operational capacity needs
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115 kV Outage Condition B Western Maine –
Original Plan – 2nd Outage
• 115 kV Outage Condition B Western Maine originally planned
to go on outage concurrent with Outage K in 1st Qtr 2014
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Duration ~ 2 weeks
Some generators have DNE Limits
Removes 2 paths from Wyman Hydro Export Interface
Interface limits
• Inner Rumford Export Interface
• Outer Rumford Export Interface
• Wyman Hydro Export Interface
– Tentatively moving Outage K to reduce generation impacts
– Interface limits
• Inner Rumford Export Interface
• Outer Rumford Export Interface
• Wyman Hydro Export Interface
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115 kV Outage Condition C Western Maine
• Originally planned coincident with the 115 kV Outage
Condition D Northern Maine in 2nd Qtr 2013
– Duration of ~ 3 weeks
– Some generators may have DNE Limits
– Removes 2 paths from the Wyman Hydro Export Interface
• Wyman Hydro Export Interface
• Inner Rumford Export Interface
• Outer Rumford Export Interface
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115 kV Outage Condition C Western Maine
• Currently Scheduled for 1st Qtr 2014
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Duration of ~ 3 weeks
Moved to reduce generation impacts
Will be after Outage Condition D Northern Maine outages
Some generators may have DNE Limits
With additional MPRP construction completed the Interface limits
increased
• Wyman Hydro Export Interface
• Inner Rumford Export Interface
• Outer Rumford Export Interface
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345/115 kV Outage Condition F Northern
Maine
• Original plan 2nd Qtr 2013
– Duration of ~ 1 week
– Requires that a number of generators cannot operate
– Interface Limits
• Bangor Hydro Export Interface • Keene Road Export Interface
• Orrington South Interface
• Current plan 4th Qtr 2013
– Duration of ~ 1 week
– Moved to coordinate with generator planned outages
– Interface Limits
• Bangor Hydro Export Interface • Keene Road Export Interface
– Updated generator models
• Orrington South Interface
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345 kV Outage Condition G Northern Maine
Area - Original Plan
• Original plan 3rd Qtr 2013
– Duration of ~ 2 weeks
– Requires that a number of generators cannot operate
– Preliminary Interface Limits
• New Brunswick to New England Interface
• New England to New Brunswick Interface
• New England to New Brunswick + Keene Road Export Interface
• Orrington Import Interface
• Orrington South Interface
• Keene Road Export Interface
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345 kV Outage Condition G Northern Maine
Area - Current Plan
• Current plan 4th Qtr 2013
– Duration reduced to ~4 days, some of the work already completed
live-line
– Moved to coordinate with New Brunswick outages
– Moved 2nd Outage I to overlap this outage to minimize duration of
restrictions
– Temporary transmission configuration utilized to increase limits
– Preliminary Interface Limits
• New Brunswick to New England Interface
• New England to New Brunswick
• New England to New Brunswick + Keene Road Export Interface
• Orrington Import Interface
• Orrington South Interface
• Keene Road Export Interface
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345 kV Outage Condition H Northern Maine Current Plan
• Original plan 4th Qtr 2013
– Duration of ~ 2 weeks
– Some generators have DNE limits
– Interface Limits
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New Brunswick- New England
Bangor Hydro Export Interface
Keene Road Export Interface
Orrington South Interface
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345 kV Outage Condition H Northern Maine Current Plan
• Current plan 4th Qtr 2013
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Duration of ~ 1.5 weeks
Some generators have DNE limits
Moved to overlap 2nd Outage I
Multiple temporary transmission configurations utilized to allow
increased local practical transmission system limits
• Also Overlaps Outage J that requires southern ME interface limits
– Interface Limits
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New Brunswick- New England
Bangor Hydro Export Interface
Keene Road Export Interface
Orrington South Interface
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345 kV Outage Condition I Northern Maine
• Original plan 4th Qtr 2013
– 1st sequence duration of ~ 1.5 weeks
• Will be restored at night
– 2nd sequence duration of ~ 1.5 weeks
• Continuous outage
– Requires that a number of generators cannot operate
– Interface Limits
• Keene Road Export Interface
• Orrington South Interface
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345 kV Outage Condition I Northern Maine
• Current plan 3rd and 4th Qtr 2013
– 1st sequence duration of ~ 1.5 weeks
• Continuous outage
– 2nd sequence duration of ~ 3 weeks
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Continuous outage
Part of this outage will be independent of other outages
Part of this outage will overlap Outage G, limits per Outage G
Part of this outage will overlap Outage H, limits per Outage H
– Temporary transmission configuration utilized to allow all generators
to operate
– Interface Limits
• Keene Road Export Interface
• Orrington South Interface
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345/115 kV Outage Condition J Southern Maine
• 3rd Qtr 2013 – 4th Qtr 2013
– Duration of ~ 2.5 months
– A number of evolving outages over this period
• 3rd Qtr-4th Qtr duration of ~ 5 weeks
• Interface Limits
– Maine Yankee South Interface
– Surowiec South Interface
• Remainder of 4th Qtr ~ 5 weeks
• Interface Limits
– Maine Yankee South Interface
– Surowiec South Interface
– MPRP outages and NERC Alert outages combined to minimize total
duration of equipment outages
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115 kV Outage Condition K Central Maine
• 4th Qtr 2013
– Duration of ~ 3 weeks
• Interface limits
– Wyman Hydro Export Interface
• 1st Qtr 2014
– Duration of ~ 2.5 months
• Interface limits
– Wyman Hydro Export Interface
• 2nd Qtr 2014
– Duration of ~3 weeks
– Overlaps other outages, removing 2 paths from Wyman Hydro Export
Interface
• Estimate of interface limits
– Wyman Hydro Export Interface
– Currently assessing options
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345 kV Outage Condition L Central Maine
• 1st and 2nd Qtr 2014 ~ 7 weeks
– Interface Limits
• New Brunswick – New England • Orrington South –
• Maine-New Hampshire –
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