1 1 1 central maine power local system plan presentation planning advisory committee meeting...

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Central Maine Power Local System Plan

Presentation

Planning Advisory Committee Meeting

November 19, 2008

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Local System Plan (LSP) Communication

Per Attachment K – Local, this LSP presentation:

• Describes projected improvements to non-PTF that are needed to maintain reliable customer service.

• LSP is presented at a Planning Advisory Committee meeting once a year

• PAC, Transmission Customers, and other Stakeholders have 30 days to provide written comments for consideration to CMP

– CMP’s contact:David M. ConroyManager System PlanningCentral Maine Power Company83 Edison DriveAugusta, Maine 04336 (email: [email protected])

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LSP Communication cont.

• Each PTO is individually responsible for publicly posting and updating the status of its respective LSP and the transmission projects list on a website in a format similar to the RSP project list

• The ISO-NE RSP project list contains links to each individual PTO’s transmission project list

• CMP’s LSP project list is located at:

http://www.cmpco.com/SuppliersAndPartners/TransmissionServices/CMPTransmissionSvc/lsp.html

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CMP LSP Project List

• Central Maine Power will update the LSP project list at least annually.

• A presentation of the LSP will be made annually.

• LSP Project List is a cumulative listing of proposed transmission solutions intended to meet identified needs.

• Similar to PTF projects in the RSP, the LSP project list contains a status of each non-PTF project:

• Concept• Proposed• Planned• Under Construction• In-Service

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CMP’s Local System Planning Process

• All CMP system upgrades are determined in accordance with Central Maine Power Company Transmission Planning Criteria.

• Planning studies can result from:– Periodic Assessment of CMPs 14 Local Planning Areas– Load Growth– Retail or Wholesale Customer Request – Generator Interconnection Request– System-Wide Contingency Analysis

• Studies may utilize both ISO-NE Library Base Cases and/or Local CMP Base Cases.

• Generator Interconnections on the non-PTF Transmission System are guided by the CMP Transmission & Distribution Interconnection Requirements for Generation.

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LSP ProjectsNeed Projected

In-Service Date

Major

Project

Project Status Needs Assessment Solutions

Load Growth/

Sub-Area Study

June 2009 Boothbay

Area Reliability

Study

Newcastle

Substation

Under Construction

Several transmission elements could overload under normal operating conditions in 2010

Add 2nd transformer, re-rate five 34.5 kV lines, add 115 kV breakers, add 5.4 MVAR capacitor bank

Load Growth/

Sub-Area Study

May 2009 Edgecomb

Substation

Under Construction

Potential widespread low voltage, post-contingency

Add 34.5 kV breakers, add 5.4 MVAR capacitor bank

Load Growth/

Sub-Area Study

February

2009

Boothbay

Substation

Under Construction

Potential Low Voltage, post-contingency

Add 5.4 MVAR capacitor bank

Load Growth/

Sub-Area Study

December

2008

Damariscotta

Substation

Under Construction

Potential Low Voltage, post-contingency

Add 3.6 MVAR capacitor bank

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In-Service Date

Major

Project


Load Growth/

Sub-Area Study

2010 Augusta

Area Reliability

Study

Line Re-ratings

Proposed Several transmission elements could overload under normal operating conditions

Re-rate 34 kV line Sections 39 & 41

Load Growth/

Sub-Area Study

2011 Bowman St Substation

Proposed Potential Bowman St 115/34.5 kV transformer overloaded and low voltage post-contingency

Add 2nd 115 115/34.5 kV transformer

Load Growth/

Sub-Area Study

2011 Maxcys

Substation

Proposed Low voltages following loss of Maxcys 115/34.5 kV transformer

Add second transformer at Maxcys

Coordinate w/MPRP

Load Growth/

Sub-Area Study

December 2008

Augusta East Side Substation

Under Construction

115 kV Line Section 88 fault results in loss of 115/34.5 kV supply at Augusta East Side and low voltages

Replace Augusta East Side 115 kV switch with a circuit breaker

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LSP ProjectsNeed Projected In-

Service DateMajor

Project


Load Growth/

Sub-Area Study

2011 Berwick - Lebanon

Area Reliability

Study

Bassett Substation

Proposed Experiencing high load growth, thermal restriction on Section 118

Add 2nd 34.5 kV line from Quaker Hill to Bassett, new Bassett S/S

Load Growth/

Sub-Area Study

2013 Berwick Substation

Proposed Load growth, inadequate transformer capacity

Add 34.5 kV transmission line Bassett to Berwick, new Berwick S/S

Load Growth/

Sub-Area Study

2012 New Lebanon Substation

Proposed Load growth in Lebanon area will exceed area capacity

Add new Lebanon S/S, add 34.5 kV transmission line from Butler’s Corner

Load Growth/

Sub-Area Study

2010 High St

Substation

Proposed Thermal restrictions on transmission elements

Re-rate S114, S112A, S114A & S185

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In-Service Date

Major

Project


Load Growth/

Sub-Area Study

2010 Camden-Rockland

Area Reliability

Study

Camden Substation

Proposed Low voltage Add 5.4 MVAR capacitor bank

Load Growth/

Sub-Area Study

2011 Park St Substation


Load Growth/

Sub-Area Study

2011 Meadow Rd Substation


Load Growth/

Sub-Area Study

2012 Highland

Substation

Proposed Need for post-contingent support in the area provided by a new 34 kV line.

•New 34 kV transmission line to Meadow Rd•Add 1 mile 34.5 kV line to separate Warren – Waldoboro line

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In-Service Date

Major

Project


Load Growth/

Sub-Area Study

2008 & 2009 Lewiston-Auburn

Area Reliability

Study

Line

Re-ratings

Under Construction

Potential 34.5 kV line overloads for normal operating conditions

Re-rate five 34 kV lines: Sections 41, 45, 46, 50, & 72

Load Growth/

Sub-Area Study

2009 Hotel Road Substation

Proposed Potential post-contingency low voltages & overload of Hotel Rd 115/34.5 kV transformer

Install 2nd 115/34 kV transformer & 115 kV breaker at Hotel Road

Load Growth/

Sub-Area Study

2012 Gulf Island - Lewiston Lower Substations

Planned Overloading of Lewiston - Auburn Downtown Transmission Corridor

Reinforce Gulf Island – Lewiston Lower transmission system via new 115 kV transmission line.

Coordinate w/MPRP

Load Growth/

Sub-Area Study

2009 Leeds Substation

Planned Low voltage and transformer loading at Turner

Leeds 115/34.5 kV substation

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In-Service Date

Major

Project


Load Growth/

Sub-Area Study

2011 & 2012 Saco Bay

Area

Reliability

Study

New Ross Road & Goosefare Substations

Planned Additional 115 kV transformer capacity and voltage support is needed in the Saco Bay Area. Loss of Section 193 violates CMP’s loss of load criterion.

New 115 kV double-circuit line from Louden to Old Orchard Beach

New 115/34.5 kV Substation in Old Orchard Beach

Load Growth/

Sub-Area Study

June 2010 Section 174 Planned 34.5 kV line overload & condition

Rebuild Section 174

Load Growth/

Sub-Area Study

2013 Portland - North

Area Reliability

Study

2nd Portland Loop

Concept Support load growth in the Portland-North Area

Study started.

Potential for a 115 kV transmission line from Yarmouth to East Deering with 115/34.5 kV S/S

Coordinate w/MPRP

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In-Service Date

Major Project

Project Status Needs Assessment

Solutions

Load Growth/

Sub-Area Study

2012 Mid-Coast Reliability Study

Belfast Breakers

Proposed Loss of Section 86 exceeds CMP’s loss of load criterion and results in low voltages

•Add 115 kV breakers at Belfast•Build ~ 1 mile 115 kV tap line•Add 10.8 MVAR 34.5 kV capacitor bank

•Coordinate w/MPRP

Generator Interconnect

2009 ISO-NE Queue # 138

Under Construction

Meet Interconnection Request & Implement PPA requirements

•Rebuild Bigelow Substation•Wyman Hydro Sect 215 termination•Re-rate Sect 215•Several area capacitor banks


2009 ISO-NE Queue # 197 RH

Concept Request to connect 55 MW to CMP 34.5 kV Section 54 north of Rumford 115 kV Substation

Undergoing System Impact Study

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In-Service Date

Major Project




Concept Interconnection Request for 100 MW to CMP 115 kV Section 222 north of Wyman Hydro Substation

Undergoing Feasibility Study



Concept Interconnection Request for 68 MW to CMP 34.5 kV Section 54 north of Rumford 115 kV Substation



2009 ISO-NE Queue # 215 LF

Concept Interconnection Request for 75 MW to CMP 34.5 kV Section 59 north of Rumford 115 kV Substation

Undergoing System Impact Study


2010 ISO-NE Queue # 244 HP

Concept Interconnection Request for 156 MW to CMP 115 kV Section 215


1 1 1 central maine power local system plan presentation planning advisory committee meeting...

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