Planning Advisory Committee Meeting October 20, 2016 … · Local System Plan Presentation October...

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Planning Advisory Committee Meeting

Local System PlanPresentation

October 20, 2016

www.cmpco.com 2

Purpose of Local System Plan

Per Attachment K – Local, this LSP presentation:

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

customer service.

• Reflects:

• LSP Needs Assessments

• Corresponding transmission system planning studies

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LSP Communication

• LSP is communicated to the PAC at an ISO-NE PAC RSP

meeting once a year.

• Separate meetings can be arranged if needed

• PAC, Transmission Customers, and other Stakeholders

have 30 days to provide written comments for

consideration to CMP.

• CMP’s contact:

Chris Morin

Manager Electric System Planning

Central Maine Power Company

83 Edison Drive

Augusta, 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 and is located at:

• CMP’s LSP project list and Planning Manual are located at:

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

http://iso-ne.com/committees/comm_wkgrps/prtcpnts_comm/topac/mtrls/index.html

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CMP LSP Project List

Status Definition

Concept

Project is under consideration asa possible solution to a need, butlittle or no analysis is available

Proposed

CMP has determined that theproject is an appropriate solutionto a need, but has not yetobtained internal budgetapproval, or final regulatoryapproval

Planned

Budgetary and regulatoryapproval has been obtained

UnderConstruction

Project is approved and is underdesign/construction

In-Service Project is complete

• 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.

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CMP’s Local System Planning Process

• All CMP system upgrades are determined in accordance with Iberdrola USA ElectricSystem Planning Manual.

• Planning studies can result from:

Periodic Assessment of CMP’s Local Planning Areas

Load Growth

Retail or Wholesale Customer Request

Generator Interconnection Request

System-Wide Contingency Analysis

Public Policy Requirements

• 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 theCMP Transmission & Distribution Interconnection Requirements forGeneration.

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Berwick/Lebanon Area

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ProjectOrigin

MajorProject

ProjectDescription

NeedsAssessment

Projected

In-ServiceDate

Status

Berwick -Lebanon

Area Reliability

Study

BerwickSubstation

New 34/12 kV BerwickSubstation and 34.5 kVtransmission line toBassett (Section 116)

Load growth,inadequate 34/12 kVcapacity, overloadeddistribution circuits

Jan 2017Under

construction

South SanfordSubstation

Complete rebuild ofSouth SanfordSubstation

Load growth,inadequate 34/12 kVcapacity, overloadeddistribution circuits

May 2017

Underconstruction

LSP Projects – Berwick/Lebanon Area

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Brunswick/Topsham Area

Study Area

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LSP Projects – Brunswick/Topsham Area

ProjectOrigin

MajorProject

ProjectDescription

NeedsAssessment

Projected

In-ServiceDate

Status

Brunswick -Topsham AreaStudy

Line workRe-rate 34.5 kVSection 76

Overloaded undersingle elementcontingency conditions

2018 Planned

BrunswickHydroSubstation

Upgrade BrunswickHydro T2 34/12 kVtransformer

Overloaded undernormal operatingconditions

2018 Planned

WoolwichSubstation

Upgrade WoolwichT1 34/12 kVtransformer


2019 Proposed

TopshamSubstation

Upgrade TopshamT2 34/12 kVtransformer


2022 Proposed

Section 11Rebuild

Rebuild 34.5 kV linebetween Topsham115 kV and Bath115 KV


2021 Proposed

Section 77Rebuild

Rebuild 34.5 kV linebetween Mason andBath 115 kV


2021 Proposed

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LSP Projects – Brunswick/Topsham Area

ProjectOrigin

Major ProjectProject

DescriptionNeeds

Assessment

Projected

In-ServiceDate

Status

Brunswick –Topsham

Area Study

(Cont.)

Topsham 115 kVSubstation

Rebuild theTopsham Substationto a 115 kV sixbreaker ring busconfiguration.Upgrade Topsham115 kV T1 and T3115/34.5 kVtransformers

Voltage collapseconditions, T1 and T3overloaded undersingle elementcontingency conditions

2022 Proposed

Bath 115 kVSubstation

Add a 5.4 MVAR34.5 kV capacitorbank

Low voltage 2021 Proposed

DistributionBetterment

Cooks CornerSubstation

Rebuild the existingCooks CornerSubstation to a newgreen field location.

N-1 violations ofDistribution PlanningCriteria

2020 Concept

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Lakes Region Area

Study Area

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LSP Projects – Lakes Region Area

ProjectOrigin

MajorProject

ProjectDescription

NeedsAssessment

Projected

In-ServiceDate

Status

Lakes RegionArea

Reliability Study

Northern

Sub-AreaUpgrades

New (9.5 mile) 34.5kV line fromBridgton to KimballRoad (Section 98) Voltage collapse under

contingent systemconditions

Dec 2019 Planned

Install a 115/34.5 kV30/56 MVAtransformer atKimball Road

Dec 2019 Planned

Rebuild 34.5 kV lineSection 94

Thermal violationunder contingentsystem conditions

Dec 2019 Planned

Remove voltagesupervision for thereverse powerrelaying on Lovell T1

Back feeding NHunder post- contingentconditions createsvoltage and thermalviolations

Dec 2019 Planned

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ProjectOrigin

MajorProject

Project DescriptionNeeds

Assessment

Projected

In-ServiceDate

Status

Lakes RegionArea

Reliability Study

(Cont.)

Eastern

Sub-AreaUpgrades

New 115/34 kV S/S at NewGloucester with a fourbreaker ring bus and115/34 kV transformer and(8 mile) 115 kVtransmission line toSurowiec (Section 282)

Voltage collapse andthermal violationsunder contingentsystem conditions

Aug 2020 Proposed

Relocate Raymond 34 kVS/S and rename to WebbsMills S/S, install two 5.4MVAR capacitor banks

Room needed forexpansion

Jan 2020 Proposed

New (8 mile) 34.5 kV linefrom New Gloucester toWebbs Mills


Aug 2020Proposed


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ProjectOrigin

MajorProject

Project DescriptionNeeds

Assessment

Projected

In-ServiceDate

Status

Lakes RegionArea

Reliability Study

(Cont.)

Eastern Sub-AreaUpgrades

Shaw Mills SubstationUpgrades; two 5.4 MVARcapacitor banks and three34.5 kV breakers

Voltage violationsunder contingentsystem conditions

Mar 2018 Planned

Western Sub-AreaUpgrades

Two 34.5 kV breakers, two5.4 MVAR capacitor banksat the North LimingtonSubstation

Voltage collapseunder contingentsystem conditions

Oct 2018 Planned

Maintenance -ReliabilityInspection

New WaterfordSubstation

Add new WaterfordSubstation and 34.5 kVtransmission line toPapoose Pond

Section 78 needs tobe rebuilt due to itsasset condition.However, due to thehigh cost of a rebuild,it was decided toretire Section 78 andfeed Papoose Pondfrom a new WaterfordSubstation.

2020 Concept


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Lewiston/Auburn Area

Study Area

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LSP Projects – Lewiston/Auburn Area

Project OriginMajor

ProjectProject

DescriptionNeeds

Assessment

Projected

In-ServiceDate

Status

Lewiston -Auburn Area

Reliability Study

Line workChange protectionsettings on Section72

34.5 kV line overloadpost-contingency

2016 Planned

Line workReplace Section 148cable into GreatFalls Substation


2016 Planned

Gulf IslandSubstation

Upgrade Gulf Island115/34.5 kV T4transformer

Transformeroverloaded with loadgrowth, coordinate withMPRP reinforcements

2020 Cancelled

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Midcoast Area NTA

Study Area

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LSP Projects – Midcoast Area NTA

ProjectOrigin

MajorProject

ProjectDescription

NeedsAssessment

Projected

In-ServiceDate

Status

Midcoast AreaNTA Analysis

(the Camden -Rockland

Area Reliability

Study)

Line Work

Add 1 mile 34.5 kVline to separateSection 51 (Warren –Waldoboro)

Voltage and thermalviolations undercontingent systemconditions

2019Proposed – pending

NTA analysis

Midcoast AreaNTA Analysis

BoothbayUpgrades

Add a 2.7 MVARcapacitor bank atBoothbay

Low voltage Jun 2017 Planned

Line WorkRebuild 34.5 kVSection 23


2020 Cancelled

NewcastleSubstationUpgrades

Construct a 4-breaker115 kV ring bus andinstall a 34.5 kV bus-tie breaker. Alsorelocate Section 18onto bus 3

Voltage collapse undercontingent systemconditions

May 2018 Planned

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Portland Area NTA

Study Area

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Projects – Portland Area NTA

Project OriginMajor

ProjectProject

DescriptionNeeds

Assessment

Projected

In-ServiceDate

Status

Portland

Area NTAAnalysis

Raven FarmExpansion(115/34.5 kV)

New 115 kV bus withfour breaker,breaker-and-a-halfconfiguration. Also,install a 115/34 kVtransformer and 34.5kV line to Elm Street

Voltage collapsethermal violationsunder contingentsystem conditions 2021

Concept– pendingNTA analysis

Line work

Rebuild 34.5 kVSection 181

Overloaded undersingle elementcontingency conditions 2021

Concept– pendingNTA analysis

Rebuild a portion of34.5 kV Section 180


2021 Concept

Red BrookUpgrade Red Brook115/34.5 kV T1 to a30/56 MVA

Transformeroverloaded undercontingent systemconditions

2021Concept– pending

NTA analysis

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Portland North Area

Study Area

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LSP Projects – Portland North Area

ProjectOrigin

MajorProject

ProjectDescription

NeedsAssessment

Projected

In-ServiceDate

Status

Portland North

Area Reliability

Study

Line workRe-rate/rebuildportions of 34kV lineSection 180A

Thermal violationsunder normaloperating andcontingent systemconditions

2021Concept – pending

NTA analysis

FreeportSubstation

Add two 2.7 MVARcapacitor banks


2021Concept –pending

NTA analysis

Bishop Street

Substation

Add a 5.4 MVARcapacitor bank


May 2017 Planned

Elm Street

Substation

Bring S164 in/out ofElm St, re-rateS164A

Thermal violationsunder contingentsystem conditions

(Not needed if RavenFarms 115 kV is built)

2021Concept –pending

NTA analysis

Prides Corner

Substation

Add an additional 5.4MVAR 34.5 kVcapacitor bank


2021Concept – pendingNTA analysis

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LSP Projects – Portland North Area

ProjectOrigin

MajorProject

ProjectDescription

Needs AssessmentProjectedIn-Service

DateStatus

Portland North

Area Reliability

Study

(Cont.)

Line work Rebuild Section 103

Overloaded undernormal operating and/orsingle elementcontingency conditions

2018Proposed – pendingLakes Region AreaReliability Study results

FalmouthSubstation

Add two 34.5 kVbreakers

Voltage and 25 MWloss of load criteriaviolations undercontingent system

2021Concept –pending NTAanalysis

Swett Rd.

Substation

Add two 34.5 kVbreakers and add 5.4MVAR 34.5 kVcapacitor bank

Low Voltages in thelocal area under singleelement contingencies

2018Proposed – pendingLakes Region AreaReliability Study results

East DeeringSubstation

115-34 kV substationwith 115 kV line fromRaven Farm.

Voltage collapse,additional sourceneeded in the area

2021

Concept – pendingNTA analysis

NorthYarmouthSubstation

New 115/34kV S/Stapped from Sect. 166,and 14.8 mi 34.5 kVline to Gray & Freeportwith breakers

Voltage violations undercontingent systemconditions 2020

Concept – pendingNTA analysis

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Waterville/Winslow Area

Study Area

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LSP Projects – Waterville/Winslow Area

Project OriginMajor

ProjectProject

DescriptionNeeds

Assessment

Projected

In-ServiceDate

Status

Waterville -Winslow AreaReliability Study

County RoadSubstation

Bring Section 241in/out of new CountyRoad S/S byconstructing 7 milesof new 115 kVTransmission.Construct a 4-breaker ring bus witha second 115/34 kVtransformer. Theexisting Rice RipsSubstation will bereplaced.


Jul 2020Planned

Line workRe-conductor aportion of 34.5 kVline Section 56.


2019 Planned


South ChinaSubstation

Upgrade SouthChina T1


Jan 2017 Under Construction

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LSP Projects – Other

ProjectOrigin

MajorProject

ProjectDescription

Needs Assessment

Projected

In-ServiceDate

Status


Line work Rebuild Section 187

This 34.5 kV linesection is in very poorcondition and needs tobe rebuilt to improvereliability.

May 2018 Planned

Maintenance -ReliabilityInspection Line work

Rebuild RiverCrossing of Section77/207 doublecircuit towers

Towers are in poorcondition and need tobe rebuilt to improvereliability

May 2018 Planned

Upper KennebecArea ReliabilityStudy

Moxie FallsSubstation

New Moxie Falls115/34.5 kVSubstation

Inadequate voltageregulation, low voltageviolations during alllines in conditions

2021 Concept

Maintenance -ReliabilityInspection Spring Street

Replace 5-34.5 kVbreakers, newcontrol house andrelay upgrades

Aging oil filled breakersbeing replaced withnew SF-6 units 2020 Concept

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LSP Projects – Asset Condition

ProjectOrigin

MajorProject

ProjectDescription

NeedsAssessment

Projected

In-ServiceDate

Status

SubstationModernization

Forest Ave

Construction of anew Forest AveSubstation at thesame location

Asset condition,maintenance,reliability, and safetyconcerns

2020 Proposed

SearsportSubstation

Construction of anew SearsportSubstation and re-rate of Sections 20and 26

Asset condition,reliability and safetyconcerns

Dec 2017 Planned

DunstanSubstation

Construction of anew DunstanSubstation at a newlocation

Asset condition,several safetyconcerns

2020 Proposed

South BerwickSubstation

Construction of anew South BerwickSubstation at a newlocation


2020 Proposed

WarrenSubstation

Construction of anew WarrenSubstation at a newlocation

Asset condition,maintenance,reliability, and safetyconcerns

2020 Proposed

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ProjectOrigin

MajorProject

ProjectDescription

NeedsAssessment

Projected

In-ServiceDate

Status


East WiltonSubstation

Construction of anew East WiltonSubstation at a newlocation


2020 Proposed

FryeburgSubstation

Construction of anew FryeburgSubstation at a newlocation

Asset condition,reliability concerns

2024 Concept

Great FallsSubstation

Complete Rebuild ofGreat FallsSubstation

Asset condition,reliability andmaintenance concerns

2024 Concept

North AnsonSubstation

Construction of anew North AnsonSubstation at a newlocation


2025 Concept

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ProjectOrigin

MajorProject

ProjectDescription

NeedsAssessment

Projected

In-ServiceDate

Status


Butlers CornerSubstation

Construction of anew Butlers CornerSubstation at a newlocation


2023 Concept

Deer RipsSubstation

Complete Rebuild ofDeer RipsSubstation

Asset condition,problems with jointownership of facilitieswithin hydro station

2023 Concept

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In-Service LSP Projects

Project OriginMajor

ProjectProject

DescriptionNeeds

AssessmentIn-Service

DateStatus

Midcoast AreaNTA Analysis Mason

UpgradesRelay Modifications onSection 25 at Mason


2016In-Service


BristolSubstation

Upgrade Bristol T1Overloaded undernormal operatingconditions

2016In-Service

Berwick -Lebanon

Area Reliability

Study

New LebanonSubstation

Add new LebanonSubstation and 34.5 kVtransmission line toButler’s Corner(Section 185A)

Load growth inLebanon area willexceed area capacity

2016In-Service


Carrabassett

Substation

Retire CarrabassettSubstation and feedexisting load fromNorth AnsonSubstation

Asset condition withvery low customercount

2014 In-Service

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2015 LSP PresentationCentral Maine Power’s

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