Bilgehan Donmez Osman Bileya Real Time SUPPORT Presentation to the RC 2015 Review of the Annual Load Power Factor LPF Correction process Review the LPF Survey Results for the 20142015 Audit period ID: 786732
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Slide1
Load Power Factor Audit 2014/2015
Bilgehan Donmez / Osman
Bileya
Real
Time
SUPPORT
Slide2Presentation to the RC - 2015
Review of the Annual Load Power Factor (LPF) Correction process Review the LPF Survey Results for the 2014/2015 Audit periodForecast Compliance into the 2016 LPF Audit period
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Slide3Review of the Annual LPF Correction Program
Eleven LPF Areas are defined in NEPOOL OP17 – Load Power Factor CorrectionOP17 and annual LPF audit is managed by the Voltage Task Force (VTF).Each Area is assessed individually to determine its own reactive needs.
Voltage/Reactive Performance criterionNet Zero MVAR Interchange criterion
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Slide4Graphical Representation of the 11 LPF Areas
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Slide5Reasons for Updating LPF Standards
Changes in area voltage/reactive performance due to transmission changes:New transmission linesNew bulk transformers
Generation Retirement Changes in generator reactive capabilityAdditional static or dynamic reactive compensationChanges in transfer conditionsLoad growth since last Area LPF studyChange of Area
definition
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Slide6Annual Load Power Factor Survey
ISO-NE and VTF are responsible for:Administering the annual LPF surveyEvaluating and reporting results
Requesting remedial action plans from Market ParticipantsEvery year specific historical hours are selected from the previous year Each load serving Participant (as defined in OP17) is tasked with submitting LPF data for the selected historical hoursParticipant’s surveyed LPFs are compared with the corresponding Area’s LPF Standard for the specified hours
The degree of noncompliance for each Participant is identified in terms of surplus or shortfall of reactive capability
Changes in the underlying networks (i.e., adding caps) can impact compliance with survey requirements
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Slide7Example of Load Power Factor Standard and Survey
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Slide8Annual Load Power Factor Survey
The annual LPF Survey Program accomplishes two goals:Audit Market Participants’ compliance with the current LPF standards
Forecast Market Participants’ compliance with the new standards if the current standards are revised/updated for any of the reasons specified in the previous slideOP17 program cited by NERC as an Example of Excellence.
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Slide92014/2015 Load Power Factor Survey Results
Seventy six (76) participants submitted LPF audit data for six loads points identified by ISO New England:Spring Light load (9,135 MW)
Summer Intermediate load (22,193 MW)Summer Peak load (24,409 MW)Fall Light load (9,197 MW)Winter Intermediate load (18,192 MW)Winter Peak load (20,556 MW)
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Slide1010
Slide11Compliance with the Current Standard
10 out of 11 Areas are compliant (no reactive deficiency) based on the current LPF standards
The only non-compliant area is Southeast MA both for the Spring and Fall light load seasons by 32 and 47 MVARs respectively. 11
Slide12Fully Compliant Participants in the 2014/2015 Audit Period
In the 2014/2015 audit period 39 participants were fully compliant:
Boston: NSTAR dba Eversource Central Mass/Harriman : Mass Electric (no SBN&G), ShrewsburyConnecticut area: Bozrah Light & Power, Groton Utilities, Mohegan Tribal Utilities Authority, CL&P dba Eversource, The United Illuminating Co
Maine:
Emera
Maine (Bangor Hydro), CMP
New Hampshire:
Littleton, PSNH
dba
Eversource,
Unitil
Energy Systems
Northeast Mass:
Danvers, Ipswich, Littleton, Mass Electric, Middleton, Peabody, RMLD, Rowley
Rhode Island:
Narragansett, Pascoag
Southeast:
Mansfield, Middleboro, Norwood, NSTAR
dba
Eversource
SWCT:
CL&P
dba
Eversource, The United Illuminating Co, Third Taxing Dist-NRWLK
Vermont:
Liberty (Granite State Electric - GS WEST), Green Mountain Power, NH Electric Coop, VELCO
Western Mass:
Chicopee Elect Light, Holyoke Gas and Electric, WMECO
dba
Eversource, South Hadley, Westfield
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Slide132014/2015 LPF Survey Results
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Slide142014/2015 LPF Survey Results Cont’d
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2014/2015 LPF Survey Results Cont’d
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2014/2015 LPF Survey Results Cont’d
Slide1717
2014/2015 LPF Survey Results Cont’d
Slide18Revised Load Power Factor for 2016
All area LPF standards are up-to-date. No LPF studies were conducted for 2016.
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Slide19Forecast Compliance by Area
10 out of 11 Areas are compliant (no reactive deficiency) based on the forecast LPF standards
The only non-compliant area is Connecticut only for Spring light load season by 17 MVARs. However, Connecticut is compliant for the Fall light load season due to the coordination with the distribution companies.19
Slide2020
Forecast Compliance by Participant (Spring)
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Forecast Compliance by Participant (Fall)
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Bilgehan Donmez
bdonmez@iso-ne.comOsman Bileya
obileya@iso-ne.com