appendix b - voltage & reactive schedulesiso new england operating procedure op-12 - voltage and...

ISO New England Operating Procedure OP-12 - Voltage and Reactive Control, Appendix B

This document is controlled when viewed on the ISO New England Internet web site. When downloaded and printed, this document becomes UNCONTROLLED, and users should check the Internet web site to ensure that they have the latest version. In addition, a Controlled Copy is available in the Master Control Room procedure binder. Hardcopy is Uncontrolled Revision 34 Effective Date: January 8, 2019 of 50

ISO-NE PUBLIC

Appendix B - Voltage & Reactive Schedules


Hardcopy is Uncontrolled Revision 34 Effective Date: January 8, 2019 of 50

ISO–NE PUBLIC

Contents

CONVEX .................................................................................................................................................................. 4

CONVEX Voltage & Reactive Schedule for Generators .................................................................................... 4

CONVEX Transmission Capacitors .................................................................................................................. 10

CONVEX Transmission Reactors ..................................................................................................................... 12

CONVEX Voltage & Reactive Schedules for Non-Generator Dynamic Reactive Resources ........................... 13

CONVEX Voltage Schedules for Autotransformers with LTCs ........................................................................ 14

Maine .................................................................................................................................................................... 16

Maine Voltage & Reactive Schedule for Generators ..................................................................................... 16

Maine Transmission Capacitors ..................................................................................................................... 19

Maine Transmission Reactors ........................................................................................................................ 20

Maine Voltage & Reactive Schedules for Non-Generator Dynamic Reactive Resources .............................. 21

Maine Voltage Schedules for Autotransformers with LTCs ........................................................................... 22

New Hampshire .................................................................................................................................................... 23

New Hampshire Voltage & Reactive Schedule for Generators ...................................................................... 23

New Hampshire Transmission Capacitors ..................................................................................................... 25

New Hampshire Transmission Reactors ........................................................................................................ 26

New Hampshire Voltage & Reactive Schedules for Non-Generator Dynamic Reactive Resources ............... 27

New Hampshire Voltage Schedules for Autotransformers with LTCs ........................................................... 28

NGRID ................................................................................................................................................................... 29

NGRID Voltage & Reactive Schedule for Generators ..................................................................................... 29

NGRID Transmission Capacitors ..................................................................................................................... 33

NGRID Transmission Reactors ........................................................................................................................ 34

NGRID Voltage & Reactive Schedules for Autotransformers with LTCs ........................................................ 35

NSTAR ................................................................................................................................................................... 36

NSTAR Voltage & Reactive Schedule for Generators ..................................................................................... 36

NSTAR Transmission Capacitors ..................................................................................................................... 38

NSTAR Transmission Reactors ....................................................................................................................... 39

NSTAR Voltage Schedules for Autotransformers with LTCs .......................................................................... 40

NSTAR Voltage & Reactive Schedules for Transmission Static VAR Compensator ........................................ 41

VELCO ................................................................................................................................................................... 42



ISO–NE PUBLIC

VELCO Voltage & Reactive Schedule for Generators ..................................................................................... 42

VELCO Transmission Capacitors ..................................................................................................................... 43

VELCO Transmission Reactors ........................................................................................................................ 44

VELCO Voltage & Reactive Schedules for Non-Generator Dynamic Reactive Resources .............................. 45

VELCO Voltage Schedules for Autotransformers with LTCs ........................................................................... 46

OP-12, Appendix B Revision History ..................................................................................................................... 47



ISO–NE PUBLIC

CONVEX

CONVEX Voltage & Reactive Schedule for Generators

Asset ID

Legend Sched = Schedule Max = Maximum Min = Minimum

MVAr Out = Gross Lagging based on NX-12D and operational data

MVAr In = Gross Leading based on NX-12D and operational data

S-SCC = Summer Seasonal Claimed Capability

Units

Operational Voltage Schedules - On-Peak

Period1

Operational Voltage Schedules - Off-Peak

Period2

Reactive Capability

Max/Min Acceptable

Voltage Schedule Range

(NX-12D) High Side

Visibility kV

Sched

Tolerance Band

kV Sched

Tolerance Band MVAr

Out @ S-SCC

MVAr In @

EcoMin Load

kV Max kV Min kV

High kV

Low kV

High kV

Low

326 ALTRESCO GT1 119 120 117 119 120 117 12.9 -6.9 121 109 YES 326 ALTRESCO GT2 119 120 117 119 120 117 10.6 -7.1 121 109 YES 326 ALTRESCO GT4 119 120 117 119 120 117 11.8 -8.1 121 109 YES 326 ALTRESCO ST 119 120 117 119 120 117 24.0 -7.6 121 109 YES

1086 BERKSHIRE POWER 118 120 116 118 120 116 175.6 -65.2 121 108 YES 1032 BRIDGEPORT ENERGY GT11 118 120 116 118 120 116 100.7 -18.6 121 109 YES 1032 BRIDGEPORT ENERGY GT12 118 120 116 118 120 116 111 -14.8 121 109 YES 1032 BRIDGEPORT ENERGY ST 118 120 116 118 120 116 111.8 5.1 121 109 YES 340 BRIDGEPORT HARBOR 3 118 120 116 118 120 116 227.6 -128 121 116 YES 341 BRIDGEPORT HARBOR 4 118 120 116 118 120 116 4.8 -3.5 121 116 YES

38206 BRIDGEPORT HARBOR 5 GT 356 359 353 356 359 353 211.8 -112.3 362 340 YES 38206 BRIDGEPORT HARBOR 5 ST 356 359 353 356 359 353 113.0 -60.0 362 340 YES

349 BRIDGEPORT RESCO/ WHEELABRATOR

BRIDGEPORT, L.P. 118 120 116 118 120 116 25.1 -15.3 121 109.25 NO 14801 CABOT 118 120 116 118 120 116 34.4 -24.1 120 111 YES

324 CDECCA C1 118 120 116 118 120 116 14.3 -7 121 109 YES 324 CDECCA S1 118 120 116 118 120 116 5.5 -5.5 121 109 YES 379 COBBLE MOUNTAIN 69 71 67 69 71 67 4.9 -3.8 75 62 NO



ISO–NE PUBLIC


Asset ID





Units


Period1


Period2

Reactive Capability

Max/Min Acceptable


(NX-12D) High Side

Visibility kV

Sched

Tolerance Band

kV Sched

Tolerance Band MVAr

Out @ S-SCC

MVAr In @

EcoMin Load

kV Max kV Min kV

High kV

Low kV

High kV

Low

370 COS COB 10 119 120 117 119 120 117 3.9 -0.2 121 109 NO 371 COS COB 11 119 120 117 119 120 117 5.1 -0.7 121 109 NO 372 COS COB 12 119 120 117 119 120 117 5.1 -0.2 121 109 NO

14157 COS COB 13 119 120 117 119 120 117 0.2 -0.3 121 109 NO 14158 COS COB 14 119 120 117 119 120 117 1.3 -1.0 121 109 NO

CROSS SOUND CABLE 357 360 354 357 360 354 33.4 -148.5 362 340 YES 396 DEVON 10 118 120 116 118 120 116 1.3 -0.2 121 116 NO 397 DEVON 11 118 120 116 118 120 116 20.1 -15 121 116 NO 398 DEVON 12 118 120 116 118 120 116 20.1 -15.6 121 116 NO 399 DEVON 13 118 120 116 118 120 116 20.6 -15.7 121 116 NO 400 DEVON 14 118 120 116 118 120 116 20.4 -15.5 121 116 NO

12504 DEVON 15 118 120 116 118 120 116 12.5 -9.5 121 116 NO 17044 DEVON 16 118 120 116 118 120 116 22.6 -22.5 121 116 NO 17045 DEVON 17 118 120 116 118 120 116 23.4 -22.5 121 116 NO 17046 DEVON 18 118 120 116 118 120 116 26.5 -22.6 121 116 NO 42375 DEXTER 1 CT1 117 119 115 117 119 115 5.4 -6.4 120 110 YES 42376 DEXTER 2 CT2 117 119 115 117 119 115 17.2 -15.9 120 110 YES 42375/42376 DEXTER 1/2 ST 117 119 115 117 119 115 9.7 -9.8 120 110 YES

412 FALLS VILLAGE 69 71 67 69 71 67 3.6 0 73 61 YES



ISO–NE PUBLIC


Asset ID





Units


Period1


Period2

Reactive Capability

Max/Min Acceptable


(NX-12D) High Side

Visibility kV

Sched

Tolerance Band

kV Sched

Tolerance Band MVAr

Out @ S-SCC

MVAr In @

EcoMin Load

kV Max kV Min kV

High kV

Low kV

High kV

Low

420 FRANKLIN DRIVE 10 118 120 116 118 120 116 1 -1 121 109 NO 14614 KLEEN ENERGY GT1 354 357 352 354 357 352 79.9 -90.4 362 340 YES 14614 KLEEN ENERGY GT2 354 357 352 354 357 352 76.5 -90.9 362 340 YES 14614 KLEEN ENERGY ST 354 357 352 354 357 352 108.9 -112.2 362 340 YES

1342 LAKE ROAD 1 357 360 354 357 360 354 181.5 -80 362 340 YES

1343 LAKE ROAD 2 357 360 354 357 360 354 180.3 -80.5 362 340 YES 1344 LAKE ROAD 3 357 360 354 357 360 354 178.3 -82.1 362 340 YES 462 LISBON RESOURCE RECOVERY 118 120 116 118 120 116 10.7 -10 120.75 109.25 YES 497 MASS POWER GT1 118 120 116 118 120 116 37.5 -13.3 121 111 YES 497 MASS POWER GT2 118 120 116 118 120 116 36.5 -13.1 121 111 YES 497 MASS POWER ST 118 120 116 118 120 116 36 -12.7 121 111 YES 480 MIDDLETOWN 2 118 120 116 118 120 116 41.2 -29.7 121 112 YES 481 MIDDLETOWN 3 118 120 116 118 120 116 91.4 -43.5 121 112 YES 482 MIDDLETOWN 4 354 357 352 354 357 352 150.3 -46.3 362 340 NO 478 MIDDLETOWN 10 118 120 116 118 120 116 0.4 -1.8 121 112 YES

12505 MIDDLETOWN 12 354 357 352 354 357 352 10.1 -13.9 362 340 NO 37366 MIDDLETOWN 13 354 357 352 354 357 352 16.8 -13.8 362 340 NO 37367 MIDDLETOWN 14 354 357 352 354 357 352 16 -14.4 362 340 NO 37368 MIDDLETOWN 15 354 357 352 354 357 352 15.8 -14 362 340 NO



ISO–NE PUBLIC


Asset ID





Units


Period1


Period2

Reactive Capability

Max/Min Acceptable


(NX-12D) High Side

Visibility kV

Sched

Tolerance Band

kV Sched

Tolerance Band MVAr

Out @ S-SCC

MVAr In @

EcoMin Load

kV Max kV Min kV

High kV

Low kV

High kV

Low

1385 MILFORD POWER 1 118 120 116 118 120 116 159.8 -78.3 121 116 YES 1386 MILFORD POWER 2 118 120 116 118 120 116 122.9 -81.6 121 116 YES 484 MILLSTONE POINT 2 357 360 354 357 360 354 379.9 0 362 345 YES 485 MILLSTONE POINT 3 357 360 354 357 360 354 389.8 0 362 345 YES 493 MONTVILLE 5 117 119 115 117 119 115 21.1 0 121 110 YES 494 MONTVILLE 6 117 119 115 117 119 115 194.8 -107.5 121 110 YES 513 NEW HAVEN HARBOR 118 120 116 118 120 116 174 -52.6 121 116 NO

15477 NEW HAVEN HARBOR UNIT 2 118 120 116 118 120 116 14 -14.7 121 116 YES 40052 NEW HAVEN HARBOR UNIT 3 118 120 116 118 120 116 14 -15.3 121 116 YES 40053 NEW HAVEN HARBOR UNIT 4 118 120 116 118 120 116 14 -13.8 121 116 YES 14217 NORTHFIELD MOUNTAIN G1 357 360 354 357 360 354 128.3 -107.6 362 344 YES 14218 NORTHFIELD MOUNTAIN G2 357 360 354 357 360 354 139.9 -102.6 362 344 YES 14219 NORTHFIELD MOUNTAIN G3 357 360 354 357 360 354 138.2 -107.6 362 344 YES 14220 NORTHFIELD MOUNTAIN G4 357 360 354 357 360 354 137.6 -93.6 362 344 YES 14224 NORTHFIELD MOUNTAIN P1 353 356 350 353 356 350 80 -58 362 344 YES 14225 NORTHFIELD MOUNTAIN P2 353 356 350 353 356 350 136 -103 362 344 YES 14226 NORTHFIELD MOUNTAIN P3 353 356 350 353 356 350 80 -70 362 344 YES 14227 NORTHFIELD MOUNTAIN P4 353 356 350 353 356 350 80 -58 362 344 YES

515 NORWICH JET 69 71 67 69 71 67 2 -2 71 65.5 NO



ISO–NE PUBLIC


Asset ID





Units


Period1


Period2

Reactive Capability

Max/Min Acceptable


(NX-12D) High Side

Visibility kV

Sched

Tolerance Band

kV Sched

Tolerance Band MVAr

Out @ S-SCC

MVAr In @

EcoMin Load

kV Max kV Min kV

High kV

Low kV

High kV

Low

13515 PIERCE STATION 118 120 116 118 120 116 44.4 -15.6 120.75 109.25 NO 15509 PLAINFIELD RENEWABLE ENERGY 117 119 115 117 119 115 18.5 -8.9 120.8 109.3 YES

739 ROCKY RIVER 118 120 116 118 120 116 11.4 -7.8 121 105 YES 562 SECREC-PRESTON 69 71 67 69 71 67 6 -5 72.45 65.55 YES 566 SHEPAUG 69 71 67 69 71 67 13 -10.1 71 64 NO

580 SOUTH MEADOW 5 118 120 116 118 120 116 19.7 -15 121 110 YES 581 SOUTH MEADOW 6 118 120 116 118 120 116 16.1 -15.1 121 110 YES 572 SOUTH MEADOW 11 118 120 116 118 120 116 11.9 -1.2 121 110 YES 573 SOUTH MEADOW 12 118 120 116 118 120 116 9.4 -1.3 121 110 YES 574 SOUTH MEADOW 13 118 120 116 118 120 116 0.3 2.6 121 110 YES 575 SOUTH MEADOW 14 118 120 116 118 120 116 12.3 -0.6 121 110 YES 587 STEVENSON 118 120 116 118 120 116 10.9 -7.6 121 112 YES

1185 STONY BROOK GT1A 357 360 354 357 360 354 66.2 -21.1 362 328 YES 1186 STONY BROOK GT1B 357 360 354 357 360 354 41.9 -20.1 362 328 YES 1187 STONY BROOK GT1C 357 360 354 357 360 354 65.3 -23.3 362 328 YES 583 STONY BROOK GT2A 357 360 354 357 360 354 40.3 -20.2 362 328 YES 584 STONY BROOK GT2B 357 360 354 357 360 354 42.6 -20.4 362 328 YES

49325 TOWANTIC CT1 118 120 116 118 120 116 175 -92 121 109 YES 49326 TOWANTIC CT2 118 120 116 118 120 116 175 -92 121 109 YES



ISO–NE PUBLIC


Asset ID





Units


Period1


Period2

Reactive Capability

Max/Min Acceptable


(NX-12D) High Side

Visibility kV

Sched

Tolerance Band

kV Sched

Tolerance Band MVAr

Out @ S-SCC

MVAr In @

EcoMin Load

kV Max kV Min kV

High kV

Low kV

High kV

Low

49325/49326 TOWANTIC ST 118 120 116 118 120 116 175 -92 121 109 YES 1376 WALLINGFORD UNIT 1 118 120 116 118 120 116 26.5 -10.6 121 116 YES 1377 WALLINGFORD UNIT 2 118 120 116 118 120 116 29 -10 121 116 YES 1378 WALLINGFORD UNIT 3 118 120 116 118 120 116 23.6 -10.1 121 116 YES 1379 WALLINGFORD UNIT 4 118 120 116 118 120 116 27 -11.1 121 116 YES 1380 WALLINGFORD UNIT 5 118 120 116 118 120 116 26.8 -10.9 121 116 YES

50025 WALLINGFORD UNIT 6 118 120 116 118 120 116 31.6 -31.6 121 109 YES 50026 WALLINGFORD UNIT 7 118 120 116 118 120 116 31.6 -31.6 121 109 YES 12564 WATERBURY GENERATION FACILITY 118 120 116 118 120 116 40.6 -10.8 121 109 YES 11842 WATERSIDE POWER 119 120 117 119 120 117 20.2 -21.4 121 109 NO

633 WEST SPRINGFIELD 3 118 120 116 118 120 116 15.3 -40.2 121 109 YES 1694 WEST SPRINGFIELD GT2 118 120 116 118 120 116 24 -14.1 121 109 YES

Note: Units not listed will follow local voltage schedules in accordance with Local Control Center requirements. 1 On-Peak is from 0700-2300 on weekdays that are not NERC holidays. 2Off-Peak is from 2300-0700 on weekdays, all weekends and NERC holidays



ISO–NE PUBLIC

CONVEX Transmission Capacitors

Substation Location Data from NX-9

Available MVAr System Nominal Voltage (kV)

AGAWAM 11K; 12K 2 @ 50.4 115

AMHERST 10K 1 @ 14.4 115 BERLIN 11K; 12K 2 @ 37.8 115

BERLIN 20K 1 @ 50.4 115

BRANFORD 10K 1 @ 50.4 115

CANTON 11K; 12K 2 @ 25.2 115 CUMBERLAND 10K 1 @ 14.4 115

DARIEN 10K 1 @ 37.8 115 DOREEN 19A-10K 1 @ 20.6 115

EAST SHORE 1K; 2K 2 @ 42.0 115 FRANKLIN DRIVE 10K 1 @ 37.8 115

FROST BRIDGE 11K; 12K; 13K 3 @ 50.4 115 FROST BRIDGE 21K; 22K 2 @ 50.4 115

GLENBROOK 11K; 12K 2 @ 36.0 115 GLENBROOK 13K; 14K 2 @ 50.4 115 GLENBROOK 21K; 22K 2 @ 36.0 115

GLENBROOK 23K 1 @ 37.8 115

GLENBROOK 24K 1 @ 50.4 115

GREEN HILL 10K; 20K 2 @ 25.2 115

HADDAM 10K 1 @ 37.8 115

HAWTHORNE 1K; 2K 2 @ 20.0 115

HOPEWELL 10K 1 @ 37.8 115

MANCHESTER 11K; 12K; 13K 3 @ 50.4 115 MANCHESTER 21K; 22K; 23K 3 @ 50.4 115

MIX AVENUE 11K; 12K 2 @ 20.0 115

MONTVILLE 11K; 12K 2 @ 50.4 115 MYSTIC 21K; 22K 2 @ 25.2 115

NORTH BLOOMFIELD 11K; 12K 2 @ 50.4 115 NORTH BLOOMFIELD 20K 1 @ 50.4 115

NORTH HAVEN 1K 1 @ 42.0 115 OXFORD 10K 1 @ 25.2 115

PLEASANT 11K; 12K 2 @ 14.4 115

PLUMTREE 10K 1 @ 37.8 115



ISO–NE PUBLIC

CONVEX Transmission Capacitors



PLUMTREE 20K 1 @ 50.4 115

PODICK 10K 1 @ 14.4 115 POOTATUCK 1K 1 @ 30 115

ROCKY RIVER 10K 1 @ 14.4 115 SOUTHINGTON 11K; 12K; 13K 3 @ 50.4 115 SOUTHINGTON 21K; 22K;23K 3 @ 50.4 115

STONY HILL 10K 1 @ 25.2 115 STONY HILL 21K; 22K 2 @ 37.8 115

WATERSIDE 10K 1 @ 37.8 115

WEST BROOKFIELD 11K, 12K 1 @ 14.4 115

WEST SIDE 10K 1 @ 25.2 115

WOODLAND 21K; 22K 2 @ 14.4 115



ISO–NE PUBLIC

CONVEX Transmission Reactors

Substation Location

Data from NX-9


BESECK R1 1 @ -75 Fixed;

-75 Variable 345

HADDAM NECK R1 1 @ -75 Fixed;

-75 Variable 345

LUDLOW 345-R1 1 @ -75 Fixed;

-75 Variable 345

NORTHFIELD 16R-1W 1 @ -75 Fixed;

-75 Variable 345

NORWALK R1; R2 2 @ -50 Fixed;

-50 Variable 345

NORWALK JUNCTION F1; F2 2 @ -75 Fixed;

-75 Variable 345

PLUMTREE 345-F1 1 @ -75 Fixed;

-75 Variable 345

SINGER R1; R2; R3; R4 4 @ -50 Fixed;

-50 Variable 345



ISO–NE PUBLIC

CONVEX Voltage & Reactive Schedules for Non-Generator Dynamic Reactive Resources


Location

Operational Voltage Schedules On-Peak

Period1

Operational Voltage Schedules Off-Peak

Period2

Available MVAr

Nominal Voltage

(kV)

Max/Min Acceptable Voltage Schedule Range

Max Voltage kV

Min Voltage kV

kV Sched

Tolerance Band

kV Sched

Tolerance Band

kV High

kV Low

kV High

kV Low

GLENBROOK STATCOM 119 120 117 119 120 117 2 @ -75 / +75 115 121 114 STONY HILL SYNCHRONOUS

CONDENSER 118 120 116 118 120 116 -12.5 / 25 115 121 105

1 On-Peak is from 0700-2300 on weekdays that are not NERC holidays. 2 Off-Peak is from 2300-0700 on weekdays, all weekends and NERC holidays.



ISO–NE PUBLIC

CONVEX Voltage Schedules for Autotransformers with LTCs

Legend Max = Maximum Min = Minimum

Auto = Automatic Substation Name

High Side kV/ Low Side kV

LTC Setting (Auto (A)/ SCADA (S)/

Manual (M))

Scheduled Voltage (kV)

Max LTC Tap

Min LTC Tap Voltage Control Bandwidth (kV)

AGAWAM 1X, 2X 345/115 A 118 16 -16 117-119 BARBOUR HILL 1X, 2X 345/115 A 118 16 -16 117-119

BERKSHIRE 1X 345/115 A 119 17 1 118-120 BERKSHIRE 2X 345/115 A 119 16 -16 118-120

CARD 5X 345/115 A 115 17 1 114-116 EAST DEVON 2X 345/115 S 118 16 -16 117.4-118.6

EAST SHORE 8X; 9X 345/115 S 118 33 1 117-119 FROST BRIDGE 1X 345/115 A 118 16 -16 117-119 HADDAM 5X, 6X 345/115 A 118 16 -16 117-119

KILLINGLY 2X 345/115 A 117 16 -16 116-118 LUDLOW2X; 3X 345/115 A 118 16 -16 117-119

MANCHESTER 4X 345/115 A 118 33 1 117-119 MANCHESTER 5X 345/115 A 118 33 1 116.3-119.7 MANCHESTER 6X 345/115 A 118 33 1 117-119

MONTVILLE 18X; 19X 345/115 A 117 16 -16 116-118 NORTH BLOOMFIELD 5X**; 7X 345/115 A 118 16 -16 117-119

NORTHFIELD 5X 345/115 A 118 16 -16 117-119 NORWALK 8X; 9X 345/115 A 119 16 -16 118-120

NORWALK HARBOR 8X 138/115 S 119 16 -16 114-121 PLUMTREE 1X; 2X 345/115 A 119 17 1 118-120

SINGER 1X*, 2X 345/115 S 118 16 -16 117-119 SOUTHINGTON BUS 1X 345/115 A 118 33 1 117-119



ISO–NE PUBLIC

CONVEX Voltage Schedules for Autotransformers with LTCs SOUTHINGTON BUS 2X 345/115 A 118 33 1 117-119 SOUTHINGTON BUS 3X 345/115 A 118 17 1 117-119 SOUTHINGTON BUS 4X 345/115 A 118 8 -8 117-119

* Singer 1X is a GSU with tap changing options. It is LTC capable but is normally operated in manual. **North Bloomfield 5X has maximum LTC tap of -16 and minimum LTC tap of 16.



ISO–NE PUBLIC

Maine

Maine Voltage & Reactive Schedule for Generators

Asset ID





Units


Period¹


Period2

Reactive Capability

Max/Min Acceptable


(NX-12D) High Side Visibility

kV Sched

Tolerance Band kV

Sched

Tolerance Band MVAr Out @ S-SCC

MVAr In @

EcoMin Load

kV Max

kV Min kV

High kV

Low kV

High kV

Low

590 BORALEX STRATTON ENERGY 120 122 118 120 122 118 13.3 -11.9 123 117 YES 47390 BUCKSPORT 3-5 G3 120 122 118 120 122 118 45 -27 122 116 YES 47390 BUCKSPORT 3-5 G4* 120 122 118 120 122 118 95.2 -61.5 122 116 YES 47390 BUCKSPORT 3-5 G5* 120 122 118 120 122 118 10 -10 122 116 YES 40343 BULL HILL WIND 120 121 118 120 121 118 11 -12 122 109 YES

367 CAPE GT4 120 121 118 120 121 118 10.5 -2.7 121 113 NO 368 CAPE GT5 120 121 118 120 121 118 10 -2.9 121 113 NO 345 CATALYST CO-GEN 117 119 115 117 119 115 45 0 121 109 YES 445 COVANTA WEST ENFIELD / INDECK 5 118.5 120 117 118.5 120 117 7.2 -2.8 120 112 NO

48082 HANCOCK WIND 120 122 118 120 122 118 33.7 -23.8 122 109 YES 432 HARRIS 1 120 121 118 120 121 118 5.1 -2.8 121 113 YES 433 HARRIS 2 120 121 118 120 121 118 12.1 -7.6 121 113 YES 434 HARRIS 3 120 121 118 120 121 118 12.4 -7.1 121 113 YES

12551 KIBBY WIND POWER 120 121 118 120 121 118 28.2 -4.1 123 109 YES 40338 MAINE INDEPENDENCE STATION 1A GT1 120 122 118 120 122 118 110.5 -63.4 123 114 YES 40339 MAINE INDEPENDENCE STATION 1B GT2 120 122 118 120 122 118 108.4 -62.7 123 114 YES 40338/ 40339

MAINE INDEPENDENCE STATION 1A/1B ST 120 122 118 120 122 118 128.2 -54.8 123 114 YES

536 PERC-ORRINGTON 1 120 121 118 120 121 118 15.8 -0.5 122 114 YES



ISO–NE PUBLIC


Asset ID





Units


Period¹


Period2

Reactive Capability

Max/Min Acceptable



kV Sched

Tolerance Band kV

Sched


MVAr In @

EcoMin Load

kV Max

kV Min kV

High kV

Low kV

High kV

Low

14665 RECORD HILL WIND 117 119 115 117 119 115 12 -8 120 115 YES 463 REENERGY LIVERMORE FALLS 118.5 121 115 118.5 121 115 22.3 -3.5 124 109.25 YES

37175 ROLLINS WIND PLANT 118 119 117 118 119 117 29 -29 122 109 YES 11424 RUMFORD FALLS 117 119 115 117 119 115 11.5 -0.9 121 109 YES 1255 RUMFORD POWER GT 117 119 115 117 119 115 100.3 -59.2 121 113 YES 1255 RUMFORD POWER ST 117 119 115 117 119 115 37.4 -27.3 121 113 YES 1107 SAPPI SOMERSET/HINCKLEY 1 115 120 115 115 120 115 30 -10 122 109 YES 1107 SAPPI SOMERSET/HINCKLEY 2 115 120 115 115 120 115 30 -25 122 109 YES

15464 STETSON WIND FARM 118 119 117 118 119 117 28 -28 119 117 YES 16612 STETSON II WIND FARM 118 119 117 118 119 117 8 -7 119 117 YES 13703 VERSO COGEN GT1 117 119 115 117 119 115 37.4 -8.5 121 113 YES 13704 VERSO COGEN GT2 117 119 115 117 119 115 35.7 -9.7 121 113 YES 13705 VERSO COGEN GT3 117 119 115 117 119 115 35.3 -6.9 121 113 YES 14177 WESTBROOK ENERGY CENTER 1A GT1 120 121 118 120 121 118 99.6 -43.2 121 113 YES 14178 WESTBROOK ENERGY CENTER 1B GT2 120 121 118 120 121 118 99.5 -42 121 113 YES 14177/ 14178 WESTBROOK ENERGY CENTER 1A/1B ST 120 121 118 120 121 118 85.7 -46.4 121 113 YES

621 WILLIAMS 118 121 116 118 121 116 5.7 -1.5 121 113 YES 636 WYMAN HYDRO 1 118 121 116 118 121 116 11.8 -7.8 121 113 YES 637 WYMAN HYDRO 2 118 121 116 118 121 116 12.5 -7.1 121 113 YES



ISO–NE PUBLIC


Asset ID





Units


Period¹


Period2

Reactive Capability

Max/Min Acceptable



kV Sched

Tolerance Band kV

Sched


MVAr In @

EcoMin Load

kV Max

kV Min kV

High kV

Low kV

High kV

Low

638 WYMAN HYDRO 3 118 121 116 118 121 116 12.2 -5.5 121 113 YES 639 YARMOUTH 1 120 121 118 120 121 118 20 -15 121 113 YES 640 YARMOUTH 2 120 121 118 120 121 118 18.3 -15.4 121 113 YES 641 YARMOUTH 3 120 121 118 120 121 118 37.8 -24.7 121 113 YES 642 YARMOUTH 4 355 358 352 355 358 352 189.4 -101.7 362 349 YES

Units not listed will follow local voltage schedules in accordance with Local Control Center requirements. ¹ On-Peak is from 0700-2300 on weekdays that are not NERC holidays. 2 Off-Peak is from 2300-0700 on weekdays, all weekends and NERC holidays. * This unit can only run when Bucksport G3 is online due to steam dependability.



ISO–NE PUBLIC

Maine Transmission Capacitors



COOPERS MILLS ROAD KC1*; KC2* 2 @ 48.0 115 CROWLEYS KC2** 1 @ 50.0 115 EPPING TAP CAP 1 @10.2 115

HEYWOOD ROAD KC1** 1 @ 20.0 115 KEENE ROAD CAP 1 @ 15.0 115

KEENE ROAD (OAKFIELD) CS-C1; CS-C2 2 @ 25.0 115

KIMBALL ROAD KC1**; KC2** 2 @ 30.0 115 LARRABEE ROAD KC1** 1 @ 30.0 115 MAGUIRE ROAD KC1** 1 @ 50.9 115

MASON KC2*; KC3* 2 @ 50.0 115 ORRINGTON KC1*; KC2*; KC3* 3 @ 67.0 115

RILEY KC1** 1 @ 30.0 115 RUMFORD IP KC1** 1 @ 25.0 115

SANFORD KC1 ** 1 @ 30.6 115 SOUTH GORHAM KC1*; KC2* 2 @ 50.0 115

STARKS KC1**; KC2** 2 @18.0 115 SUROWIEC KC1*; KC2*; KC3* 3 @ 50.0 115

WYMAN HYDRO KC1**; KC2** 2 @ 18.0 115

*Capacitor(s) have sophisticated PLC controls, see Operational Descriptions in NX9 and/or ODMS **Capacitor(s) automatically trip at 1.05 per unit as documented in NX9



ISO–NE PUBLIC

Maine Transmission Reactors



ALBION ROAD KR1; KR2 2 @ -40.0 13.8

COOPERS MILLS ROAD KR1; KR2 2 @ -40.0 13.8

LARRABEE ROAD KR1; KR2 2 @ -40.0 13.8

ORRINGTON KR1; KR2 2 @ -40.0 13.8

SUROWIEC KR1; KR2 2 @ -40.0 13.8



ISO–NE PUBLIC

*See M/LCC 9 and M/LCC 9 Attachment B for a detailed description of the voltage / reactive scheduling for the Chester SVC **This is the nominal voltage of the terminal bus where the SVC available MVArs are established. 1 On-Peak is from 0700-2300 on weekdays that are not NERC holidays. 2 Off-Peak is from 2300-0700 on weekdays, all weekends and NERC holidays.

Maine Voltage & Reactive Schedules for Non-Generator Dynamic Reactive Resources


Location


Period1


Period2

Available MVAr

Nominal

Voltage (kV)


Max Voltage kV

Min Voltage kV

kV Sched

Tolerance Band

kV Sched

Tolerance Band

kV High

kV Low

kV High

kV Low

BINGHAM WIND SC 118 120 116 118 120 116 -27 / +60 115 121 109

CHESTER SVC* 355.2 358 348 355.2 358 348 -123.29 / +448.32 345 358 348 COOPERS MILLS ROAD

STATCOM 350 355 348 350 355 348 -200 / +200 345 355 348

DOGTOWN SVC 118 120 116 118 120 116 -7.4 /+65.2 18** 121 109

OAKFIELD SC 118.5 120.5 116.5 118.5 120.5 116.5 -27/+60 115 121 109



ISO–NE PUBLIC

Maine Voltage Schedules for Autotransformers with LTCs Legend

Max = Maximum Min = Minimum

Auto = Automatic

Substation Name



Manual (M)) Scheduled

Voltage (kV) Max LTC

Tap Min LTC

Tap Voltage Control Bandwidth (kV)

ALBION ROAD T1 345/115 A 119.5*** 16 -16 118.5-120.5 COOPERS MILLS ROAD T3 345/115 A 119.5*** 16 -16 118.5-120.5

KEENE ROAD T1 345/115 S 118.5* 16 -16 117-120 KEENE ROAD T2 345/115 M N/A 16 -16 N/A

LARRABEE ROAD T1 345/115 A 119.5*** 16 -16 118.5-120.5 MAGUIRE ROAD T1 345/115 A 119.5*** 16 -16 118.5-120.5

MASON T9 345/115 A 118.5 16 -16 117-120 ORRINGTON T1 345/115 S N/A* 16 -16 118-122 ORRINGTON T2 345/115 S N/A* 16 -16 118-122

SOUTH GORHAM T1 345/115 S** 119 16 -16 117.5-120.5 SOUTH GORHAM T2 345/115 S** 119 16 -16 117.5-120.5

SUROWIEC T1 345/115 A 119.5*** 16 -16 118.5-120.5

* Transformer tap adjusted to maintain the appropriate voltage schedule based on prevailing system conditions ** This transformer LTC is run in SCADA when WE1A or WE1B are online and in Auto when both WE1A and WE1B are offline. *** Transformer has multiple voltage schedule set points (117.5 kV, 118.5 kV, 119.5 kV, and 120.5 kV) that are adjusted to maintain the appropriate voltage schedule based on prevailing system

conditions; each set point voltage control bandwidth spans-±1 kV from the set point.



ISO–NE PUBLIC

New Hampshire

New Hampshire Voltage & Reactive Schedule for Generators

Asset ID





Units


Period¹


Period2

Reactive Capability

Acceptable Max/Min Voltage Schedule

Range (NX-12D)

High Side

Visibility

kV Sched

Tolerance Band

kV Sched


MVAr In @

EcoMin Load

kV Max

kV Min

kV High

kV Low

kV High

kV Low

16653 BURGESS BIOPOWER 118 119 117 118 119 117 26.2 -10.5 120.75 109.25 YES 14595 GRANITE RELIABLE POWER, LLC 118.5 119 117 118.5 119 117 20 -28 119 117 YES 48120/48121 GRANITE RIDGE ENERGY 1/2ST* 119 121 117 119 121 117 154.8 -91.6 121 109 YES 37050 GROTON WIND 118 119 117 118 119 117 15.7 -15.7 119 117 YES

489 MERRIMACK 1 119 120.75 117 119 120.75 117 49.88 -22.2 120.75 109.25 YES 490 MERRIMACK 2 119 120.75 117 119 120.75 117 125.4 -103 120.75 109.25 YES 382 MERRIMACK CT1 119 120.75 117 119 120.75 117 10.4 -10.9 120.75 109.25 YES 383 MERRIMACK CT2 119 120.75 117 119 120.75 117 10.5 -11.1 120.75 109.25 YES 508 NEWINGTON 1 357 360 354 357 360 354 194.1 -64.1 362.25 327.75 YES

1649 NEWINGTON ENERGY CT1 357 360 354 357 360 354 121 -46 362 339 YES 1649 NEWINGTON ENERGY CT2 357 360 354 357 360 354 121.8 -46 362 339 YES 1649 NEWINGTON ENERGY ST 357 360 354 357 360 354 134.6 -45 362 339 YES 556 SCHILLER 4 119 120.75 117 119 120.75 117 25.6 -22 120.75 109.25 YES 557 SCHILLER 5 119 120.75 117 119 120.75 117 25 -14 120.75 109.25 YES 558 SCHILLER 6 119 120.75 117 119 120.75 117 25.7 -22 120.75 109.25 YES 555 SEABROOK 357 360 354 357 360 354 435.9 -20.2 362 345 YES 570 SMITH 118 119 117 118 119 117 5 -2 120.75 109.25 YES



ISO–NE PUBLIC

New Hampshire Voltage & Reactive Schedule for Generators

Asset ID





Units


Period¹


Period2

Reactive Capability


Range (NX-12D)

High Side

Visibility

kV Sched

Tolerance Band

kV Sched


MVAr In @

EcoMin Load

kV Max

kV Min

kV High

kV Low

kV High

kV Low

592 TAMWORTH 117.5 119.5 115.5 117.5 119.5 115.5 9.4 -4 121 109 YES

Note: Units not listed will follow local voltage schedules in accordance with Local Control Center requirements. *Granite Ridge units CT1 & CT2 are located in the NGRID Section ¹ On-Peak is from 0700-2300 on weekdays that are not NERC holidays. 2 Off-Peak is from 2300-0700 on weekdays, all weekends and NERC holidays.



ISO–NE PUBLIC

New Hampshire Transmission Capacitors


Available MVAr System Nominal Voltage (kV) BEEBE C1153; C1164; C1165 3 @ 13.3 115

CHESTNUT HILL C1156; C1157 2 @ 12.2 115

CHESTNUT HILL C1158 1 @ 24.4 115

EAGLE C1138; C1139; C1140; C1141 4 @ 26.67 115

JACKMAN C1168; C1169 2 @ 13.3 115

MADBURY C1162; C1163 2 @ 26.7 115

MERRIMACK C1151; C1152 2 @ 36.7 115

OAK HILL C1179; C1180 2 @ 13.3 115

OCEAN RD. C1154; C1155 2 @ 24.4 115

RIMMON C1176; C1177 2 @ 13.3 115

SCHILLER C1130; C1131;C1132; C1173; C1174; C1175 6 @ 13.3 115

THREE RIVERS C1159 1 @ 12.2 115

THREE RIVERS C1160; C1161 2 @ 24.4 115

WEARE C1182; C1183 2 @ 13.3 115

WEBSTER C1184; C1185; C1186; C1187 4 @ 26.67 115

WHITE LAKE C1166 1 @ 13.3 115

WHITE LAKE C1167 1 @ 6.6 115

mailto:[email protected]



ISO–NE PUBLIC

New Hampshire Transmission Reactors


Available MVAr System Nominal Voltage (kV) SCOBIE POND R1; R2 2 @ -40.0 115



ISO–NE PUBLIC

1 On-Peak is from 0700-2300 on weekdays that are not NERC holidays. 2 Off-Peak is from 2300-0700 on weekdays, all weekends and NERC holidays.

New Hampshire Voltage & Reactive Schedules for Non-Generator Dynamic Reactive Resources


Location


Period1


Period2

Available MVAr

Nominal

Voltage (kV)


Max Voltage kV

Min Voltage kV

kV Sched

Tolerance Band

kV Sched

Tolerance Band

kV High

kV Low

kV High

kV Low

FARMWOOD SC3 117.3 120 116.1 117.3 120 116.1 -12.5 / +25 115 121 109

FARMWOOD SC4 117.3 120 116.1 117.3 120 116.1 -12.5 / +25 115 121 109

SACO VALLEY SC1 117.3 120 116.1 117.3 120 116.1 -12.5/+25 115 121 109

SACO VALLEY SC2 117.3 120 116.1 117.3 120 116.1 -12.5/+25 115 121 109



ISO–NE PUBLIC

New Hampshire Voltage Schedules for Autotransformers with LTCs


Auto = Automatic

Substation Name





Tap Min LTC Tap Voltage Control Bandwidth (kV)

DEERFIELD TB14 345/115 A 118.7 16 -16 117.2-120.2 DEERFIELD TB28 345/115 A 118.7 16 -16 117.2-120.2

EAGLE TB154 345/115 A 119 16 -16 117.5-120.5 FITZWILLIAM TB34 345/115 A 118.7 16 -16 117.2-120.2

LITTLETON TB41 230/115 A 116.5 33 1 115-118 LITTLETON TB138 230/115 A 116.5 16 -16 115-118

MERRIMACK A253* 230/115 M 119.0 16 -16 117.5-120.5 SACO-VALLEY PS1 115/115 S 117.029 10 -10 115.03-119.027

SCOBIE TB30 345/115 A 118.7 16 -16 117.2-120.2 SCOBIE TB90 345/115 A 118.7 16 -16 117.2-120.2

SCOBIE TB120 345/115 A 118.7 16 -16 117.2-120.2

* This transformer LTC is run in manual when Merrimack units are on line



ISO–NE PUBLIC

NGRID

NGRID Voltage & Reactive Schedule for Generators

Asset ID




S-SCC = Summer Seasonal Claimed Capability Units


Period¹


Period2 Reactive Capability

Acceptable Max/Min Voltage Schedule Range


kV Sched

Tolerance Band kV

Sched


MVAr In @

EcoMin Load

kV Max kV Min kV

High kV

Low kV

High kV

Low

1412 ANP-BELLINGHAM 1 356 359 353 356 359 353 142.8 -77.8 362 335 YES 1415 ANP-BELLINGHAM 2 356 359 353 356 359 353 141.7 -78.2 362 335 YES 359 BEAR SWAMP/ J. COCKWELL 1 GEN 235 238 232 235 238 232 95 -75.1 241.5 218.5 NO

11765 BEAR SWAMP/ J. COCKWELL 1 PUMP 233 236 230 233 236 230 120 0 241.5 218.5 NO 360 BEAR SWAMP/ J. COCKWELL 2 GEN 235 238 232 235 238 232 98.3 -69.4 241.5 218.5 NO

11766 BEAR SWAMP/ J. COCKWELL 2 PUMP 233 236 230 233 236 230 120 0 241.5 218.5 NO 335 BELLOWS FALLS 117 119 115 117 119 115 17.7 -6.8 120.75 109.5 YES 376 CLEARY 8 118 120 116 118 120 116 7.7 -0.8 121 110 NO 375 CLEARY 9/9A CT 118 120 116 118 120 116 8.3 -5.6 121 110 NO 375 CLEARY 9/9A ST 118 120 116 118 120 116 41.2 -35 121 110 NO

47366 COMERFORD 1 234 237 231 234 237 231 17 -14.3 241.5 218.5 NO 47367 COMERFORD 2 234 237 231 234 237 231 17 -13.8 241.5 218.5 NO 47368 COMERFORD 3 234 237 231 234 237 231 5.9 -23.3 241.5 218.5 NO 47369 COMERFORD 4 234 237 231 234 237 231 12 -25.2 241.5 218.5 NO 1005 DIGHTON POWER LLC 118 120 116 118 120 116 111.4 -59.4 121 110 YES

48120 GRANITE RIDGE ENERGY CT1* 234 237 231 234 237 231 154.8 -89.2 241.5 225 YES 48121 GRANITE RIDGE ENERGY CT2* 234 237 231 234 237 231 154.8 -86.4 241.5 225 YES



ISO–NE PUBLIC


Asset ID






Period¹





kV Sched

Tolerance Band kV

Sched


MVAr In @

EcoMin Load

kV Max kV Min kV

High kV

Low kV

High kV

Low

435 HARRIMAN 117 119 115 117 119 115 16.3 -19.3 120.75 109.5 NO 38115 HARRINGTON STREET PV 70 72 68 70 72 68 4 -4 72.45 65.55 YES 12529 HOOSAC WIND 70.38 72 68 70.38 72 68 10 -10 75.9 62.1 YES

40054 JOHNSTON LFG TURBINE PLANT/

RIDGEWOOD 118 120 116 118 120 116 14.4 -11.8 121 109 YES

461 L’ENERGIA ENERGY CENTER GT 117 119 115 117 119 115 35.3 -12.8 121 110 YES 461 L’ENERGIA ENERGY CENTER ST 117 119 115 117 119 115 19.7 -8.6 121 110 YES 323 MANCHESTER 9/9A CT** 118 120 116 118 120 116 60.9 -37.5 121 110 YES 321 MANCHESTER 10/10A CT** 118 120 116 118 120 116 60.5 -37.1 121 110 YES 322 MANCHESTER 11/11A CT** 118 120 116 118 120 116 57.6 -37 121 110 YES 486 MILFORD POWER GT 117 119 115 117 119 115 13.2 -37.8 121 110 YES 486 MILFORD POWER ST 117 119 115 117 119 115 83.3 -19.7 121 110 YES

1210 MILLENIUM GT 118 120 116 118 120 116 92.7 -61.2 121 110 YES 1210 MILLENIUM ST 118 120 116 118 120 116 60.1 -32.1 121 110 YES

47370 MOORE 1 234 237 231 234 237 231 20.7 -25 241 218.5 NO 47371 MOORE 2 234 237 231 234 237 231 22.3 -17.9 241 219 NO 47372 MOORE 3 234 237 231 234 237 231 21 -18 241 219 NO 47373 MOORE 4 234 237 231 234 237 231 20.3 -19.6 241 219 NO

528 OCEAN STATE POWER GT1 356 359 353 356 359 353 25 -24.2 362 328 YES



ISO–NE PUBLIC


Asset ID






Period¹





kV Sched

Tolerance Band kV

Sched


MVAr In @

EcoMin Load

kV Max kV Min kV

High kV

Low kV

High kV

Low

528 OCEAN STATE POWER GT2 356 359 353 356 359 353 31 -28.1 362 328 YES 528 OCEAN STATE POWER ST1 356 359 353 356 359 353 47.1 -41.9 362 328 YES 529 OCEAN STATE POWER GT3 356 359 353 356 359 353 26.9 -27.3 362 328 YES 529 OCEAN STATE POWER GT4 356 359 353 356 359 353 17.6 -26.3 362 328 YES 529 OCEAN STATE POWER ST2 356 359 353 356 359 353 49.3 -49.9 362 328 YES 538 PINETREE POWER 69 71 67 69 71 67 0.7 -5.2 71.07 66.9 YES 546 RESCO SAUGUS 117 119 115 117 119 115 22.3 -7.6 121 112 NO

1630 RISEP 101 GT1 118 120 116 118 120 116 46.6 -50.9 120.75 109.25 YES 1630 RISEP 201 GT2 118 120 116 118 120 116 44.9 -53.7 120.75 109.25 YES 1630 RISEP 301 ST 118 120 116 118 120 116 48.2 -48.1 120.75 109.25 YES

48695 SALEM 5 GT 117 119 115 117 119 115 170 -100 121 109 YES 48695 SALEM 5 ST 117 119 115 117 119 115 123 -66 121 109 YES 48696 SALEM 6 GT 117 119 115 117 119 115 170 -100 121 109 YES 48696 SALEM 6 ST 117 119 115 117 119 115 123 -66 121 109 YES 1226 TIVERTON POWER GT 118 120 116 118 120 116 74.5 -24.4 121 109 YES 1226 TIVERTON POWER ST 118 120 116 118 120 116 57.8 -24.4 121 109 YES 599 VERNON 69 72 67 69 72 67 8.0 -8.5 72.4 65.5 NO 613 WATERS RIVER JET 2 117 119 115 117 119 115 20.7 -6 121 109 NO 624 WMI MILLBURY 1 118 120 116 118 120 116 14 -11.4 120 110 YES



ISO–NE PUBLIC


Asset ID






Period¹





kV Sched

Tolerance Band kV

Sched


MVAr In @

EcoMin Load

kV Max kV Min kV

High kV

Low kV

High kV

Low

Units not listed will follow local voltage schedules in accordance with Local Control Center requirements. * The Granite Ridge ST unit is located in New Hampshire Section ** The Steam unit supports the sub-transmission network and as a result regulates the terminal bus voltage.¹ On-Peak is from 0700-2300 on weekdays that are not NERC holidays.

2.Off-Peak is from 2300-0700 on weekdays, all weekends and NERC holidays



ISO–NE PUBLIC

NGRID Transmission Capacitors



BEAR SWAMP C1 1 @ 50.0 115

BELLOWS FALLS C1 1 @ 30.0 115

FRANKLIN SQUARE C2 1 @ 63.0 115

KENT COUNTY C2 1 @ 63.0 115

KENT COUNTY C5; C6 2 @ 72.0 115

MONROE C11; C12 2 @ 31.5 230

MONROE C21; C22 2 @ 31.5 230

MILLBURY C1; C3 2 @ 63.0 115

NORTHBORO RD. C6 1 @ 54.0 115

NORTHBORO RD. C3; C4 2 @ 36.0 69

PRATTS JCT 4A 1 @ 63.0 115

REVERE C1 1 @ 30.0 115

SALEM HARBOR C1; C2 2 @ 63.0 115

SANDY POND C11; C21* 2 @ 99.0 345

SANDY POND C12; C22* 2 @ 186.0 345

SANDY POND F11; F21* 2 @ 175.0 345

SANDY POND F12; F22* 2 @ 85.0 345

SANDY POND F13; F23* 2 @ 178.0 345

TEWKSBURY C1; C2 2 @ 63.0 115

*These capacitors are used to control Sandy Pond voltage when Phase II is ON with limited system voltage support. If Phase II is OFF, these

capacitors can be used to support system voltages.



ISO–NE PUBLIC

NGRID Transmission Reactors



MONROE R13; R14; R21; R23 4 @ -20.2 14.3

SANDY POND V1 - R11, V2 - R21, V2 - R22* 3 @ -160.0 345

*These reactors are used to control Sandy Pond voltage when Phase II is ON with limited system voltage support. If Phase II is OFF, these

reactors can be used to support system voltages.



ISO–NE PUBLIC

NGRID Voltage & Reactive Schedules for Autotransformers with LTCs


Auto = Automatic

Substation Name





Tap Min LTC




ISO–NE PUBLIC

NSTAR

NSTAR Voltage & Reactive Schedule for Generators

Asset ID


MVAr Out = Gross Lagging based on NX-12D and operational data MVAr In = Gross Leading based on NX-12D and operational data


Units


Period1



Acceptable Max/Min Voltage

Schedule Range

(NX-12D) High Side

Visibility

kV Sched

Tolerance Band kV

Sched


MVAR In @

EcoMin Load

kV Max

kV Min kV

High kV

Low kV

High kV

Low

1286 ANP BLACKSTONE ENERGY 1 356 359 353 356 359 353 82.0 93.1 362 335 YES 1287 ANP BLACKSTONE ENERGY 2 356 359 353 356 359 353 82.3 93.1 362 335 YES 365 CANAL 1 354 357 351 354 357 351 235.9 -101.2 362 327 YES 366 CANAL 2 354 357 351 354 357 351 120.8 -101.3 362 327 YES 388 DARTMOUTH POWER GT 116 118 114 116 118 114 15.8 -4.7 121 109 YES 388 DARTMOUTH POWER ST 116 118 114 116 118 114 16.9 -6.9 121 109 YES

15940 DARTMOUTH CT GENERATOR 3 116 118 114 116 118 114 14.3 -8.9 121 109 YES 40327 EDGAR/ FORE RIVER 11 GT1 117 119 115 117 119 115 174.7 -62.2 121 110 YES 40328 EDGAR/ FORE RIVER 12 GT2 117 119 115 117 119 115 176.7 -58.8 121 110 YES 40327/ 40328 EDGAR/ FORE RIVER 11/12 ST 117 119 115 117 119 115 174.7 -67.7 121 110 YES 1672 KENDALL CT 117 119 115 117 119 115 105.1 -58.2 121 110 YES

50015 MEDWAY 4 117 119 115 117 119 115 72 -35 121 109 YES 50016 MEDWAY 5 117 119 115 117 119 115 72 -35 121 109 YES

502 MYSTIC 7 356 359 353 356 359 353 327 -183.7 362 335 YES 1478 MYSTIC 8 GT1 356 359 353 356 359 353 132.1 -104.1 362 335 YES 1478 MYSTIC 8 GT2 356 359 353 356 359 353 131.1 -103.8 362 335 YES 1478 MYSTIC 8 ST 356 359 353 356 359 353 120.5 -105.1 362 335 YES



ISO–NE PUBLIC

NSTAR Voltage & Reactive Schedule for Generators

Asset ID




Units


Period1




Schedule Range

(NX-12D) High Side

Visibility

kV Sched

Tolerance Band kV

Sched


MVAR In @

EcoMin Load

kV Max

kV Min kV

High kV

Low kV

High kV

Low

1616 MYSTIC 9 GT1 117 119 115 117 119 115 104.6 -100.5 121 109 YES 1616 MYSTIC 9 GT2 117 119 115 117 119 115 104.3 -103.7 121 109 YES 1616 MYSTIC 9 ST 117 119 115 117 119 115 104.8 -99.6 121 109 YES

48754 NEA BELLINGHAM CT1 356 359 353 356 359 353 63.3 -45.4 362 328 YES 48755 NEA BELLINGHAM CT2 356 359 353 356 359 353 64 -44.4 362 328 YES 48754/48755 NEA BELLINGHAM ST 356 359 353 356 359 353 76.9 -26.7 362 328 YES

537 PILGRIM NUCLEAR POWER STATION 354 357 351 354 357 351 245 -67 362 350 YES 540 POTTER 2 117 119 115 117 119 115 21.4 -23.8 121 110 YES 563 SEMASS 1 118 120 116 118 120 116 30.5 -15.8 120 110 NO 564 SEMASS 2 118 120 116 118 120 116 17.7 -12.1 120 110 NO

15484 THOMAS A. WATSON UNIT 1 117 119 115 117 119 115 35.1 -17.1 121 110 YES 15485 THOMAS A. WATSON UNIT 2 117 119 115 117 119 115 35.1 -15.2 121 110 YES

Units not listed will follow local voltage schedules in accordance with Local Control Center requirements. 1 On-Peak is from 0700-2300 on weekdays that are not NERC holidays. 2 Off-Peak is from 2300-0700 on weekdays, all weekends and NERC holidays.



ISO–NE PUBLIC

NSTAR Transmission Capacitors


Available MVAr System Nominal Voltage (kV) BAKER STREET C1; C2 2 @ 54 115

BARNSTABLE C1 1 @ 35.3 115

CHELSEA C1 1 @ 36.7 115

DOVER C1 1 @ 53.6 115

FALMOUTH TAP C1 1 @ 35.3 115

FRAMINGHAM C1 1 @ 54.0 115

HARTWELL C1; C2 2 @ 36.7 115

HARWICH C1 1 @ 21.2 115

HYANNIS JCT. C1 1 @ 39 115

K-STREET C1; C2 2 @ 53.6 115

LEXINGTON C1 1 @ 54 115

MASHPEE C1 1 @ 35.3 115

MYSTIC C1 1 @ 54.0 115

NEWTON HIGHLAND C1 1 @ 55.1 115

ORLEANS C1 1 @ 13.6 115

SUDBURY C1, 1 @ 49.5 115

SUDBURY C2 1 @ 36.7 115

WINGLANE STATION C1 1 @ 35.3 115

WEST FRAMINGHAM C1 1 @ 54.4 115

mailto:[email protected]



ISO–NE PUBLIC

NSTAR Transmission Reactors



EDGAR R1; R2 2 @ -40 115 K-STREET R1 1 @ -76 115

K-STREET 345-R1; 345-R2 2 @ -70 Fixed;

-90 Variable 345

LEXINGTON 345-R1 1 @ -70 Fixed;

-90 Variable 345 MYSTIC R1 1 @ -80 115

MYSTIC 345-R1 1 @ -70 Fixed;

-90 Variable 345 NORTH CAMBRIDGE R1; R2 2 @ -76 115

NORTH CAMBRIDGE 345-R1 1 @ -70 Fixed;

-90 Variable 345 PINE STREET R1; R2 2 @ 9.5 115

STOUGHTON 345-R1; 345-R2; 345-R3; 345-R4

4 @ -70 Fixed; -90 Variable 345

SUDBURY R1; R2 2 @ -20 115

WEST WALPOLE 345-R1 1 @ -70 Fixed;

-90 Variable 345 WOBURN R1; R2; R3 3 @ -76 115



ISO–NE PUBLIC

NSTAR Voltage Schedules for Autotransformers with LTCs


Auto = Automatic

Substation Name





Tap Min LTC

Tap Voltage Control Bandwidth

(kV) WOBURN 345A 345/115 S 118* 33 1 115 - 121

* Transformer tap adjusted to maintain the appropriate voltage schedule based on prevailing system conditions



ISO–NE PUBLIC

NSTAR Voltage & Reactive Schedules for Transmission Static VAR Compensator


Location


Period1


Period2

Available MVAr

Nominal Voltage (kV)


kV

Sched

Tolerance Band

kV Sched

Tolerance Band

kV High

kV Low

kV High

kV Low

Max voltage kV Min voltage kV

BARNSTABLE SVC* N/A 121 109 N/A 121 109 1 @ 0/ 125* 115 121 109

* Under normal operational conditions, the SVC will be operating with a zero (0) MVAr output, ready to respond to faults in the network. During the first 2 seconds, the maximum MVAr output is 225 MVAr. After that, the MVAr output is rapidly reduced to a maximum of 125 MVAr, which can be sustained for up to 30 minutes. 1 On-Peak is from 0700-2300 on weekdays that are not NERC holidays. 2 Off-Peak is from 2300-0700 on weekdays, all weekends and NERC holidays.



ISO–NE PUBLIC

VELCO

VELCO Voltage & Reactive Schedule for Generators

Asset ID




Units


Period¹




Schedule Range

(NX-12D) High Side

Visibility

kV Sched

Tolerance Band kV

Sched

Tolerance Band MVAr

Out @ S-SCC

MVAr In @

EcoMin Load

kV Max

kV Min kV

High kV

Low kV

High kV

Low

Units not listed will follow local voltage schedules in accordance with Local Control Center requirements. ¹ On-Peak is from 0700-2300 on weekdays that are not NERC holidays. 2 Off-Peak is from 2300 – 0700 on weekdays, all weekends and NERC holidays.



ISO–NE PUBLIC

VELCO Transmission Capacitors

Substation Location

Data from NX-9 Available

MVAr System Nominal Voltage (kV) BENNINGTON C31, C32 2 @ 12.42 115

BERLIN C87 1 @ 24.8 115

COOLIDGE C91; C92 2 @ 25.0 115

ESSEX #1 C34 1 @ 24.3 115

ESSEX C35; C36; C37; C38; C39 5 @ 24.8 115

GEORGIA C41 1 @ 24.8 115

HARTFORD C40; C42 2 @ 12.5 115

HIGHGATE CONVERTER TERMINAL S.Z2B, S.Z3B, S.Z4B , S.Z5B, N.Z7B N.Z8B, S.Z1B, S.Z6B *

6 @ 20.0 2 @ 10.0 115

GRANITE C61; C62; C64, C66 4 @ 25.0 115

LYNDONVILLE C21; C23 2 @ 12.5 115

MIDDLEBURY VB72 1 @ 22.9 115

NORTH RUTLAND C71 1 @ 24.8 115

SANDBAR C82 1 @ 24.8 115

VERMONT YANKEE C50; C51 2 @ 15.0 115

VERMONT YANKEE C52 1 @ 30.0 115

WEST RUTLAND C45; C46 2 @25.0 115

WILLISTON C83 1 @ 25.2 115

*These capacitors are used to control Highgate voltage when the Highgate Converter is ON with limited system voltage support.

If the Highgate Converter is OFF, 80 MVAR capacitors are available to provide voltage support when enabled by operators.



ISO–NE PUBLIC

VELCO Transmission Reactors

Substation Location

Data from NX-9 Available

MVAr System Nominal Voltage (kV)

COOLIDGE R41; R42 2 @-33 Fixed -26 Variable 345

NEW HAVEN R37 1 @-33 Fixed -26 Variable 345

VERNON_VT R10 1@-60 345



ISO–NE PUBLIC

VELCO Voltage & Reactive Schedules for Non-Generator Dynamic Reactive Resources


Location


Period1


Period2

Available MVAr

Nominal Voltage

(kV)


Range

kV Sched

Tolerance Band kV

Sched

Tolerance Band

kV Max kV Min kV

High kV

Low kV

High kV

Low ASCUTNEY SVC*** 117 119 115 117 119 115 -25/+50 115 121 109

ESSEX STATCOM 1 (inverters 1-3)** 117 119 115 117 119 115 -27.5/+47.5 115 119 112

ESSEX STATCOM 2 (inverters 4-6)** 117 119 115 117 119 115 -27.5/+47.5 115 119 112

GRANITE SYNC COND 117 119 115 117 119 115 4 @

(-12.5/+25) 115 119.6 112.7 JAY SYNC COND * 117.3 119.6 115 117.3 119.6 115 -14/+27.5 115 119.6 115

* Asset owned by Green Mountain Power (GMP) and connected to 46kV. VELCO controls the synchronous condenser 115kV voltage setpoint and MVAR bias setting. ** Essex STATCOM capability is comprised of three inverters, each capable of +/- 12.5 MVAR, and an associated 10 MVAR of a fixed filter bank that results in the net

capability designated above. *** Ascutney SVC capability is comprised of two fixed filter banks (22 MVAr and 28 MVAr) and a 0 MVAr to -75 MVAr dynamic TCR. The unit can operate with one

fixed filter OOS which would reduce the MVAr availability relative to the specific fixed filter OOS. 1 On-Peak is from 0700-2300 on weekdays that are not NERC holidays. 2 Off-Peak is from 2300-0700 on weekdays, all weekends and NERC holidays.



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VELCO Voltage Schedules for Autotransformers with LTCs


Auto = Automatic

Substation Name





Tap Min LTC


COOLIDGE XF 345/115 S 117 33 1 119.6 - 115 GRANITE T1 230/115 A 234 -16 16 237 - 230 GRANITE T2 230/115 A 234 -16 16 237 - 230

NEW HAVEN T1 * 345/115 A 117 16 -16 118.7 - 114.1 NEW HAVEN T2 * 345/115 A 117 16 -16 118.7 - 114.1

VERNON T1 ** 345/115 M N/A 16 -16 N/A WEST RUTLAND T1 * 345/115 A 117 16 -16 118.7 - 114.1 WEST RUTLAND T2 * 345/115 A 117 16 -16 118.7 - 114.1

*New Haven and West Rutland transformers operated in tandem **Vernon T1 and Vermont Yankee T4 transformers are operated in tandem. Vermont Yankee T4 is not equipped with LTC and Vernon T1 auto is equipped with LTC but it is normally disabled.

Vernon T1 LTC is enabled ONLY when Vermont Yankee T4 is out of service to avoid circulating VARS between both transformers



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OP-12, Appendix B Revision History Document History (This Document History documents action taken on the equivalent NEPOOL Procedure prior to the RTO Operations Date as well revisions made to the ISO New England Procedure subsequent to the RTO Operations Date.)

Rev. No. Date Reason

-- 04/13/17 For previous revision history, refer to Rev 10 available through Ask ISO;

Rev 30 09/11/15 CONVEX Remove Bridgeport Harbor 2 due to 2014 Retirement Updated voltage schedule and tolerance band of Cobble Mountain Updated voltage control bandwidth for Agawam, East Shore, Ludlow and Singer Updated Voltage Control Bandwidth to one significant digit to the right of the decimal.

Maine Added Bucksport (Verso) G3, Indeck 5 (Enfield), Newpage (Catalyst/MEAD) G4, PERC (Orrington), Rumford Falls, Stetson Wind II, Williams Station generators Added note to Bucksport G4 and G5 stating steam dependability on Bucksport G3 to come online. Changed Westbrook 2B to Westbrook 1B Added Notes to Capacitor Table on capacitor operation and trip setting Added two Coopers Mills Road Capacitors and two Oakfield Capacitors Removed two Maxcys Capacitors Added two Coopers Mills Road Reactors Added Oakfield Synchronous Condenser and updated Table Title to reflect Maine SVC and SC Added Coopers Mills Road Transformer and Keene Road Transformer Removed Maxcys Transformer Changed transformer table language to identify multiple voltage setpoints and voltage control bandwidths

New Hampshire Added Smith Hydro

NSTAR REMVEC/NGRID

Removed Wilder generator Added Bellows Falls Capacitor

VELCO Removed Vermont Yankee generator

Rev 31 06/17/16 Added Asset IDs, high-side visibility and updated unit names to reflect generator names in NX12D. Combined-cycle generators spilt into individual units. Data review: updated Voltage schedules, ranges and reactive capability to match NX database for all LCCs. Combined-cycle generators spilt into individual units. CONVEX

Added Generators Exeter, Falls Village, Norwalk Harbor 10(3), Norwich Jet, CDECCA and Dexter CT1, CT2 & ST. Added Cumberland , Hawthorne, Hopewell, Oxford and Westside Capacitors Added Barbour Hill 2X XF

Maine Added trip setting notes to Kimball Road, Riley, Rumford IP Capacitors Expanded trip setting notes to identify the location of supporting trip setting information Added Chester SVC voltage schedule.

New Hampshire Added Eagle, Schiller, Rimmon capacitors Added Saco Valley SC1 and SC2

NSTAR Added the Pine Street R1 and R2 reactors

REMVEC Added Generators Harrington PV, Hoosac Wind, Harriman, Pinetree Power and Vernon. Manchester Steamers not listed in Generator table and note added “** The Steam unit supports the sub-transmission network and as a result regulates the terminal bus voltage.”



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Rev 32 04/13/17 Added required corporate document identity to all page footers; Transformer tables updated to identify auto, SCADA or manual operational mode. All data reviewed, compared against the NX database and updated when discrepant. CONVEX

Combined-cycle CDECCA split into individual units. Removed Mount Tom, Norwalk Harbor 1,2, and 10 due to retirement. Added alternate pumping voltage schedules for Northfield 1-4. Uprates to Branford and Hopewell Capacitors and added two new capacitors at Mix Avenue. Berlin 20k replaces Berlin 13K; Plumtree 10K and 20K replaces Plumtree 11k and 12K.

Maine Added Hancock Wind. Renamed Oakfield capacitors to Keene Road (Oakfield) based on physical location of equipment. Capacitors identified as having sophisticated PLC controls: Coopers Mills Road, Mason, South Gorham and Surowiec. Addition of Bingham Wind SC and Dogtown SVC. South Gorham XF note updated to identify the correct operational mode based on Westbrook Generator configuration.

New Hampshire Added Eagle 345/115kV XF.

NSTAR Added capacitor at Newton Highland and a second at Hartwell and Sudbury

REMVEC Combined-cycle Cleary 9 split into individual units. Added alternate pumping voltage schedules for Bear Swamp/J Cockwell.

VELCO Hartford capacitor dismantled and reconfigured as two equal capacitors

Truncated the Revision History per SOP-RTMKTS.0210.0010 Section 5.6;



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Rev 33 04/19/18 In the generator tables, changed the column “MVAR In @ Min Manual Load” to “MVAR In @ EcoMin Load” Compared generator MVAR data against the NX12D database and updated when discrepant. Compared autotransformer data against the NX9 database and updated when discrepant. CONVEX

Added Wallingford 6 & 7 units Added capacitors at Doreen, Green Hill, Pootatuck, West Brookfield and West Side Added variable reactors at Ludlow and Northfield Updated Middletown and Kleen’s off peak schedule Reduced the Rocky River capacitor ‘s available MVAR Added Wallingford 6 and 7 units Added Towantic CT1, CT2, and ST units Updated North Bloomfield 5X transformer maximum and minimum LTC #s Updated Southington Bus 2X transformer voltage control bandwidth

Maine Added note for Orrington transformers’ off peak maximum voltage schedule Added Sappi Somerset/Hinckley units Autotransformers with LTCs updated Albion Road 1, Coopers Mills road T3, Larrabee Road T1, McGuire Road T1 and Surowiec T1 voltage control bandwidths and replaced footnote***bandwith span of “1.5 kV” with “1kV”;

New Hampshire Added Scobie Pond reactors Updated Saco Valley Phase Shifter’s voltage schedule and voltage control bandwidth Updated Deerfield TB14 transformer’s maximum and minimum LTC #s Updated Scobie TB30 and TB90 transformers’ maximum and minimum LTC #s

NSTAR Corrected NEA Bellingham’s asset IDs Modified Kendall CT and Mystic 7, 8, & 9 units’ on peak voltage schedules

NGRID Added Salem 5 GT and ST units Added Salem 6 GT and ST units Modified Granite Ridge GT1 & 2, Comerford, and Moore units’ on peak voltage schedules Modified Manchester Street units’ on and off peak schedules

VELCO Modified record for Essex STATCOM to include the reactive capacbility of the capacitor and to break out the Essex STATCOM record into two record to more closely align with both reality and modeling Update Granite transformer’s maximum and minimum LTC #s Added Ascutney SVC;



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Rev 34 01/08/19 Biennial review completed by procedure owner; Reordered tables alphabetically Updated the title for CONVEX & VELCO’s Voltage and Reactive Schedules for “Non-Generator Dynamic Reactive Resources” CONVEX Updated Bridgeport Energy’s tolerance band kV low and its leading MVAR capability Added Bridgeport Harbor 5’s voltage schedule Updated Kleen Energy’s on peak voltage schedule Updated Middletown’s on peak voltage schedule Added new Stony Hill Synchronous Condenser Maine Updated Chester SVC’s on & off peak voltage setpoint Added new Coopers Mills Rd Statcom New Hampshire Updated Deerfield TB14 data due to transformer replacement Corrected Eagle transformer name Corrected Eagle transformer name Added new Farmwood 3 & 4 Synchronous Condensers NGRID Updated L’Energia’s on peak voltage schedule Updated Waters River on peak voltage schedule Updated Millbury’s off peak voltage schedule Updated Milford Power’s on peak voltage schedule Updated Rise’s on and off peak voltage schedule Updated Ridgewood’s on and off peak voltage schedules Updated Resco Saugus on and off peak voltage schedules Updated Vernon’s tolerance band high kV from 71 to 72 NSTAR Updated Edgar / Fore River’s on peak voltage schedule Updated Potter 2’s on peak voltage schedule Updated Thomas A. Watson Unit 1 & 2’s on peak voltage schedule Updated Canal’s on and off peak voltage schedule Update Pilgrim’s on and off peak voltage schedule Added Medway 4 & 5’s voltage schedules VELCO Corrected the number of capacitors at Granite to 4

appendix b - voltage & reactive schedulesiso new england operating procedure op-12 - voltage and...

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