10/15/2013 | westborough, ma

1 0 / 1 5 / 2 0 1 3 | W E S T B O R O U G H , M A

Load Power Factor Audit - 2012/2013

and Area Load Power Factor

Standards revised for 2014

Osman BileyaL E A D E N G I N E E R ,

R E A L T I M E S U P P O R T

Presentation to the Reliability Committee - 2013

• Review of the Annual Load Power Factor (LPF) Correction process

• Review the LPF Survey Results for the 2012/2013 Audit period

• Present Updated 2014 LPF Standards for six Areas

• Forecast Compliance into the 2014 LPF Audit period

2

Review of the Annual LPF Correction Program

• Eleven LPF Areas are defined in NEPOOL OP17 – Load Power Factor Correction

• OP17 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 criterion– Net Zero MVAR Interchange criterion

3

Graphical Representation of the 11 LPF Areas

4

Reasons for Updating LPF Standards

• Changes in area voltage/reactive performance due to transmission changes:– New transmission lines– New bulk transformers – Generation Retirement – Changes in generator reactive capability– Additional static or dynamic reactive compensation– Changes in transfer conditions– Load growth since last Area LPF study– Change of Area definition– Revision of “Testing Criteria” assumptions

5

Annual Load Power Factor Survey• ISO-NE and VTF are responsible for:

– Administering the annual LPF survey– Evaluating and reporting results– Requesting remedial action plans from Market Participants

• Every 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 hours

• Participant’s surveyed LPFs are compared to 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

6

Example of Load Power Factor Standard and Survey

7

Annual Load Power Factor Survey

• The annual LPF Survey Program accomplishes two goals:

1. Audit Market Participants’ compliance with the current LPF standards

2. Forecast Market Participants’ compliance with the new standards if the current standards are revised/updated for any of the reasons specified in the previous slide

• OP17 program cited by NERC as an Example of Excellence.

8

2012/2013 Load Power Factor Survey Results

• Eighty one participants submitted LPF audit data for six loads points identified by ISO New England:

– Spring Light load (9,128 MW)

– Summer Intermediate load (21,938 MW)

– Summer Peak load (25,880 MW)

– Fall Light load (9,246 MW)

– Winter Intermediate load (18,753 MW)

– Winter Peak load (20,775 MW)

9

10

Spring Light load Summer Intermediate load

Summer peak load Fall light load Winter Intermediate load

Winter peak load0.00%

25.00%

50.00%

75.00%

100.00%

60%

94%

81%

56%

86%

95%

68%

89%

73%

63%

83%

90%

Comparison of % of Compliant Participants (2012/2013 vs 2011/2012)

2012/2013 Audit Period 2011/2012 Audit Period

Fully Compliant Participants in the 2012/2013 Audit Period• In the 2012/2013 audit period 33 participants were fully

compliant:Boston: NSTAR Central Mass/Harriman : Fitchburg Gas & El, Green Mountain Power,

Hudson Connecticut area: Groton Utilities, NU, The United Illuminating Co ,

Mohegan Tribal Utilities AuthorityMaine: Bangor HydroNew Hampshire: Littleton, PSNH, Unitil Energy Systems Northeast Mass: Ipswich, Littleton, Mass Electric, Middleton, Peabody,

Rowley , RMLDRhode Island: Narragansett, PascoagSoutheast: Mansfield, Middleboro, Norwood, NSTAR SWCT: NU, South NRWLK Electric & Water, Third Taxing Dist-NRWLK Vermont: CVPS, Granite State Electric (GS WEST), NH Electric Coop,

VELCO, Green Mountain Power11

2012/2013 LPF Survey Results

12

2012/2013Compliance for the spring light load 9128 MW

Spring Summer Int Summer Pk Fall Winter Int Winter Pk0.00%

5.00%

10.00%

15.00%

20.00%

25.00%

30.00%

35.00%

40.00%

45.00%

50.00%

28%

0%

5%

24%

1% 0%

% of Non-compliant Load by SeasonBased on 2012 LPF Standards

Boston (1471 MW)

CT (1157 MW)

H/C (616 MW)

Maine (734 MW)

NH (719 MW)

NEMA (740 MW)

RI (526 MW)

SEMA (1002 MW)

SWCT (976 MW)

Vermont (502 MW)

WMass (404 MW)

0.00%

25.00%

50.00%

75.00%

100.00%

1% 1%

87%

81%

0%4%

0%

54%

38%

0%

94%

% of Non-compliant Load for Spring Light load by AreaBased on 2012 LPF Standards

2012/2013 LPF Survey Results Cont’d

14

Boston CT

H/CMain

e NHNEM

A RISE

MASW

CT

Vermont

WMass

-100.000

-90.000

-80.000

-70.000

-60.000

-50.000

-40.000

-30.000

-20.000

-10.000

0.0000.000 0.000

-23.47

-15.93

0.000 0.000 0.000 0.000 0.000 0.000

-60.66

Areas Reactive Deficiency for Spring Light Load Based on 2012 LPF Standard


15

Boston CT

H/CMain

e NHNEM

A RISE

MASW

CT

Vermont

WMass

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

5.64

Reactive Deficiency for Summer Peak Load 2012Based on 2012 LPF Standard


Revised Load Power Factor for 2014

• 6 out of the 11 eleven Areas revised LPF Standards for 2014

Maine

New Hampshire

Northeast Massachusetts

Central Massachusetts / Harriman

Western Massachusetts

Southwest Connecticut

16

New England load levels modeled in the 2014 LPF Studies

17

Load Period NE Load (MW)

Peak 30,912

Shoulder 21,979

Light 10,592

Revised Maine LPF Standard for 2014

18

The following Maine Power Reliability Program (MPRP) topology upgrades are the reason for the LPF revision for 2014:

– 240 MVAR of new reactors, – four new 345/115 kV autotransformers (one replacing the soon to be retired Maxcys T3), – 184 mile long parallel 345 kV aerial transmission path from Orrington to Eliot substation

in New Hampshire, – retirement of five special protection systems (SPS), – 100 miles of new 115 kV aerial transmission and various 115 kV transmission

improvements

Revised Maine LPF Standard for 2014 Cont’d

• The minimum LPF Standards were based on the Net 0-MVAR interchange criterion

– Starting with an all lines-in system– Respecting the worst limiting contingency

• The maximum LPF Standards were based on high-voltage violation criteria – Starting with a facility out from a light load/high voltage perspective – Respecting the worst limiting contingency

19

20

9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000 27,000 28,000 29,000 30,000 31,000 32,000

0.85

0.86

0.87

0.88

0.89

0.90

0.91

0.92

0.93

0.94

0.95

0.96

0.97

0.98

0.99

1.00

1.01

1.02

1.03

1.04

1.05

MAINE AREA Compliance with 2012 thru 2013 LPF Standard

Forecast with 2014 LPF Standard

2012/2013 Survey Points

2012 thru 2013 LPF Standard

2014 LPF Standard

New England Load (MW)

LP

F

Standard 2014 2012-2013

Maximum for Light load 1.003 0.976

Maximum for Shoulder load 1.003 1.000

Minimum for Shoulder load 0.908 0.894

Minimum for Peak load 0.915 0.926

Revised New Hampshire LPF Standard for 2014

• The main reason for this year’s study is the revised “Testing Criteria” for the maximum LPF standards– Facility out as opposed to all lines-in testing during light and shoulder

load levels– Only high voltage violations are respected (net 0-MVAR interchange

criterion is not respected)

• Similar to last year’s study, the following transmission upgrades are included in this year’s study:– the new 345 kV path from New Hampshire to Maine (Elliot to Maguire

Road to South Gorham– New Capacitors at Webster and Weare – Up-rate the 326 line to 1780 MVA summer LTE

21

Revised New Hampshire LPF Standard for 2014

22




23

9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000 27,000 28,000 29,000 30,000

0.8500

0.8600

0.8700

0.8800

0.8900

0.9000

0.9100

0.9200

0.9300

0.9400

0.9500

0.9600

0.9700

0.9800

0.9900

1.0000

1.0100

1.0200

1.0300

1.0400

1.0500

NEW HAMPSHIRE AREA



2013 LPF Standard

2014 LPF Standard

New England Load ( MW)

LP

F

Standard 2014 2013 2011 -2012

Maximum for Light load 1.015 0.999 1.004

Maximum for Shoulder load 1.027 1.028 1.020

Minimum for Shoulder load 0.953 0.958 0.927

Minimum for Peak load 0.976 0.977 0.967

24

9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000 27,000 28,000 29,000 30,000

0.8500

0.8600

0.8700

0.8800

0.8900

0.9000

0.9100

0.9200

0.9300

0.9400

0.9500

0.9600

0.9700

0.9800

0.9900

1.0000

1.0100

1.0200

1.0300

1.0400

1.0500

NEW HAMPSHIRE AREA COMPLIANCE with 2011 thru 2013 LPF Standard

Forecast with 2014 LPF Standards



2014 LPF Standard

New England Load ( MW)

LP

F

Revised Northeast MA LPF Standard for 2014

• The reason for revising NEMA’s LPF standards is the retirement of Salem Harbor Units 3 & 4 by end of 2014:

– Total real power capability is approximately 585 MW

– Total lagging/leading reactive power capability is approximately 265 MVAR

Revised Northeast MA LPF Standard for 2014 Cont’d

• The minimum LPF Standards were based on the low voltage violation criterion


• The maximum LPF Standards were based on the high-voltage violation criterion

– Starting with a facility out from a light load/high voltage perspective – Respecting the worst limiting contingency

27

9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000 27,000 28,000 29,000 30,000 31,000 32,000

0.85

0.86

0.87

0.88

0.89

0.90

0.91

0.92

0.93

0.94

0.95

0.96

0.97

0.98

0.99

1.00

1.01

1.02

1.03

1.04

1.05

NORTHEAST MA AREA Compliance with 2009 thru 2013 LPF Standards

Forecast with 2014 LPF Standards



2014 LPF Standard

NEW ENGLAND LOAD (MW)

LP

F

Standard 2014 2009-2013





Revised Central MA/Harriman LPF Standard for 2014 Cont’d

The following topology upgrades are the reason for the LPF revision for 2014:

• Reclosing of A127 and B128 (major change)

• Auburn St substation - 2nd 345/115 kV auto transformer (March 2014)

• E Main St, Westborough - 2nd 115/13 kV transformer and new in-line breaker (June 2014)

• O-15S conversion to 115 kV (Oct 2014)

28

Revised Central MA / Harriman LPF Standard for 2014 Cont’d

29




30

9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000 27,000 28,000 29,000 30,000 31,000

0.8500

0.8600

0.8700

0.8800

0.8900

0.9000

0.9100

0.9200

0.9300

0.9400

0.9500

0.9600

0.9700

0.9800

0.9900

1.0000

1.0100

1.0200

1.0300

1.0400

1.0500

CENTRAL MA / HARRIMAN AREA Compliance with 2010 thru 2013 LPF Standard




2014 LPF Standard

New England Load (MW )

LP

F

LPF Standard 2014 2010- 2013 2007





Revised Western MA LPF Standard for 2014

• The previous LPF standards were evaluated in 2012 and included the Greater Springfield Reliability Project (GSRP)

• In addition to the completion of the GSRP project, this year’s study included: – The closing of A127 and B128 (Harriman to Millbury 115 kV) circuits– Addition of the following 115 kV capacitors to the Pittsfield area

- 14.4 MVAR Capacitor at Podick- 14.4 MVAR Capacitor at Amherst- 14.4 MVAR Capacitor at Cumberland

• Another reason for this year’s study is the revised “Testing Criteria” for the maximum LPF standards– Facility out as opposed to all lines-in testing during light and shoulder load levels– Only high voltage violations are respected (net 0-MVAR interchange criterion is

not respected)

31

Revised Western MA LPF Standard for 2014 Cont’d

32




33

9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000 27,000 28,000 29,000 30,000 31,0000.8000

0.8200

0.8400

0.8600

0.8800

0.9000

0.9200

0.9400

0.9600

0.9800

1.0000

1.0200

1.0400

1.0600

1.0800

1.1000

WESTERN MA AREA


2012 LPF Standard

2013 LPF Standard

2014 LPF Standard


LP

F

Standard 2014 2013 2012





34

9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000 27,000 28,000 29,000 30,000 31,0000.8000

0.8200

0.8400

0.8600

0.8800

0.9000

0.9200

0.9400

0.9600

0.9800

1.0000

1.0200

1.0400

1.0600

1.0800

1.1000

WESTERN MA AREACompliance with 2012 LPF Standard

2013 Forecast with 2014 Max LPF Standard and 2013 Min LPF Standard2014 Forecast with 2014 Min LPF Standard


2012 LPF Standard

2013 LPF Standard

2014 LPF Standard


LP

F

Revised Southwest CT LPF Standard for 2014

35

The following topology upgrades are the reason for the LPF revision for 2014:•8300 Line Reconfiguration•East Shore Capacity Upgrade

• Union Substation•Addition of Beseck Shunt Reactor•Addition of Stamford – Glenbrook Cable•Addition of South Norwalk Substation•Addition of 345-kV Series Breaker at E. Devon

Another reason for this year’s study is the retirement of Norwalk Harbor Units 1 & 2

– Total real power capability is approximately 335 MW – Total Lagging reactive power capability is approximately 100 MVAR– Total Leading reactive power capability is approximately 55 MVAR

Revised Southwest CT LPF Standard for 2014

36

• The minimum LPF Standards were based on the low voltage violation criterion



37

9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000 27,000 28,000 29,000 30,000 31,000

0.8500

0.8600

0.8700

0.8800

0.8900

0.9000

0.9100

0.9200

0.9300

0.9400

0.9500

0.9600

0.9700

0.9800

0.9900

1.0000

1.0100

1.0200

1.0300

1.0400

1.0500

SOUTHWEST CT AREA Compliance with 2009 thru 2013 LPF Standard




2014 LPF Standard

New England Load (MW )

LP

F

Standard 2014 2009-2013





Forecast Compliance

• All 11 Areas are compliant (no reactive deficiency) based on the 2014 LPF standards

– Note that some Participants within the individual Areas may still be non-compliant, however each area as a whole is compliant.

38

Improvement in Spring Light load Compliance based on Forecasted LPF Standards

39

Boston (1471 MW)

CT (1157 MW)

H/C (616 MW)

Maine (734 MW)

NH (719 MW)

NEMA (740 MW)

RI (526 MW)

SEMA (1002 MW)

SWCT (976 MW)

Vermont (502 MW)

WMass (404 MW)

0.00%

25.00%

50.00%

75.00%

100.00%

1% 1%4%

0% 0%4%

0%

54%

3%0% 2%1%

87%

81%

0%4%

0%

54%

38%

0%

94%

% of Non-compliant Load by Area

Forecasted LPF Standards2012 LPF Standards

40

Osman Bileya [email protected]

mailto:[email protected]

10/15/2013 | westborough, ma

Documents

annual lpf audit

lpf data

lpf audit data

lpf standardschanges

lpf audit period2review

annual lpf surveyevaluating

current lpf standards

lpf survey results