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`FERE Dowckets LAGT- 23 T babst_ o1
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`Exhibit NPL-15
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`1SO NEW ENGLAND OPERATING PROCEDURE NO. 1
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`APPROVED: July 28, 1983 by the NEPOOL Operating Committee
`REVISED: By NEPOOL Operating Committee,
`December 5, 1996 Effective When ISO NE assumes SPORT
`responsibilities
`REFERENCES: 1. Revised NEPOOL Agreement - Sections 10.1 and 11.1
`SATELLITE INSTRUCTIONS:
`AM1BEEI0N
`COpVER e JioEiAL MNEBOT BROTLATOBT O Dy L
`D] 237400, 555
`Maine: MNone Docket : ,_f' ke
`teew Hampshire: None fimmdl — g'f’"‘fi e anaen
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`NEPOOL 4879
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`IS0 NEW ENGLAND OPERATING PROCEDURE NO. 1
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`E DISP o PO R
`W EN R L.
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`INTRODUCTION
`
`The NEPOOL Agreement Sections 10.1 and 11.1 assign responsibility for the day-to-day
`operation of the New England bulk power supply facilities to the Regional Marketing Operations
`Committee (RMOC) and the Regional Transmission Operations Commitiee (RTOC). These
`Regional Operations Commitees (ROC), acting through ISO New England, carry out their
`responsibility for day-to-day operations.
`
`Because central dispatch responsibilities are divided and/or shared between the ISO, the
`Satellites and Participants (Participant Dispatch/SCADA Centers, Generations Stations,
`Transmission stations), it is necessary to establish overal] responsibilines and authority. This
`procedure defines the overall parameters within which the more specific Operating Procedures
`can be formulated.
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`PRENCIPLES
`
`The following principles are adopted. Appendix A expands upon the principles by
`assigning responsibilities to specific operational groups.
`
`1 150 New England is responsible 1o the ROCs for the day-to-day operation of the
`New England bulk power supply system in accordance with applicable
`procedures, criteria, rules and standards.
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`2. Satellites have a responsibility o the Panicipants whose equipmenl they operale.
`Also, they have a responsibility to assist the ISO in meeting the objectives of
`central dispatch by carrying out instructions, orders and directions received from
`the 150,
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`3. To most efficiently achieve the objective of central dispatch, it is necessary that
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`the ISO. the Satellites and the Participants execute their responsibilitics with a
`spirit of cooperation and with an understanding of the tasks to be accomplished.
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`GENERAL STATEMENT OF RESPONSIBILITIES
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`IS0 New England is responsible to the ROCs and has the authority to act for them in
`matters pertaining to the central dispatch of all ransmission facilities rated 69KV and above and
`all generating facilities committed by NEPOOL Participants to central dispatch. This assigned
`responsibility and authority extends to include decisions, instructions, and orders issued 1o
`Satellites and Participant facilities verbally or in writing, as required for day-to-day, minute-1o-
`minute operation of both generation and transmission facilities.
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`Satellites have a comprehensive responsibility for the secunty of all transmission
`facilities 69KV and above for specified regions within New England. Individual Satellite
`responsibilities include SCADA functions, security of lower voltage transmission facilities,
`coordination of station generation activities and switching and tagging of facilities not controlled
`by the operating Panicipants. These extended responsibilities are established by the individual
`Satellite’s member companies subject to the general provisions of this procedure.
`
`Each Participant shall, to the fullest extent practical, cause all transmission facilities rared
`69 KV or above owned or controlled by it and all generating facilities in which it has
`Entitlements, to be designed, constructed, maintained and operated in accordance with good
`utility practice. Participant facilities will also contribute to central dispatch in accordance wilh
`approved Operating Procedures, Criteria, Rules and Standards and 1SO New England
`Transmission Operating Guides.
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`IS0 New England, the Satellites and Participants share a responsibility to initiate dispatch
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`actions deemed necessary 1o prevent injury, loss of life, equipment damage, and/or service
`interruptions.
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`Tahle of Contents
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`TRANSMISSION OPERATION A-Z
`SECURITY ANALYSIS A-3
`ECONOMIC DISPATCH A-4
`AUTOMATIC GENERATION CONTROL (AGC) A-5
`CONTROL AREA INTERCHANGE AND INADVERTENT A-5
`CONTRACT ADMINISTRATION A-5
`CONVENTIONAL HYDRO AND PUMPED STORAGE OPERATION A-6
`INTERCONNECTION SCHEDULING A-B
`MAINTENANCE COORDINATION - GENERATION A-8
`GENERATOR TESTS AND AUDITS A-B
`OPERATING RESERVE A-9
`SYSTEM LOAD FORECASTING A-10
`THERMAL UNIT COMMITMENT A-10
`UNIT CONTROL MODES AND OPERATIONS LIMITS A-11
`BACK-UP FACILITIES A-12
`COMMUNICATIONS - DATA A-12
`COMMUNICATIONS - VOICE A-13
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`DISPATCH COMPUTER AND PERPHERAL DISPATCH EQUIPMENT A-13
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`W N i3 PRO ;
`DISPATCH OPE d N Y
`| T P
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`Consistent with the Principles and general responsibilities stated within the procedure
`and to assure the effectiveness of New England central dispatch through the IS0, the Satellites
`and Participant facilities, the following dispatch assignments are made. The listed assignments
`include most of the fundamental responsibilities of central dispatch but are not inclusive of all
`responsibilities assigned by the Regional Operations Committees. It is expected that these
`responsibilities will receive continual review and will be updated as needed to assure efficient
`operation of the power system.
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`L. TRANSMISSION OFPERATION
`A. ISO New England
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`Monitor power flows on all transmission facilities operating at 115 KV
`and above, all inter-Satellite ransmission facilities, all inter-pool
`transmission facilities and all facilities associated with pre-determined
`inter-area power flows.
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`Initiate dispatch actions, including the commitment/decommitment and
`MW adjustment of generators, required to insure that the facilities noted in
`(1) above are operated in compliance with ISO New England Operating
`Procedures, 150 New England Critena, Rules and Standards and ISO New
`England Transmission Operating Guides.
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`Direct voltage and reactive dispatch of facilities when normal schedules
`are unable to be maintained by one or more Satellites.
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`Coordinate the Satellite implementation and restoration of load shedding,
`voltage reduction and system restoration following system disturbances .
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`B. Satellites
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`Monitor power flows on all transmission facilities including voltages
`below 115 KV and interconnection points associated with each satellite’s
`region.
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`Dispatch voltage and reactive power of all facilities within the Satellite as
`long as normal schedules can be maintained. MW redispatch orders to
`A-2
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`generating stations will be distnbuted through ISO New England unless
`emergency conditions or a mutual understanding with the ISO staff
`Jjustifies direct contact with the generation station.
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`3 Dispatch all ransmission facilities radial, and/or operating below 115KV,
`if assigned that responsibility by its member Panticipants.
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`4. Direct restoration of intra-Satellite transmission facilities in accordance
`with Satellite Operating Procedures, ISO New England Operating
`Procedures and ISO New England Criteria, Rules and Standards.
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`3. Lead in communicating to ISO New England, dispatch actions required
`when Participants’ facilities require operation under a higher level of
`reliability than would be achieved within normal procedures.
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`6. Assume other dispatch duties such as switching and tagging as agreements
`are reached between each Satellite and its members.
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`1. Direct implementation and restoration of load shedding and system
`restoration following system disturbances as coordinated by ISO New
`England.
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`8. Direct implementation and restoration of voltage reduction as coordinated
`by ISO New England.
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`C. Participants
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`L. Shall at all times be the sole judge as to whether or not and to what extent
`environmental conditions, equipment conditions andfor safety requires any
`facilities to be operated at less than full capacity or not at all,
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`2 Assume responsibilities for local transmission facilities to the extent that
`the responsibility has not been transferred to a Satellite.
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`Il SECURITY ANALYSIS
`A. IS0 New England
`
`1. Receive cutage applications for transmission facilities operating at 115KV
`and above unless declared as radial transmission facilities by ISO New
`England Operating Procedure #3. Evaluate, and approve or disapprove
`applications based on contingency analysis that will assure reliable
`operalion.
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`Monitor power flows on transmission facilities operating at 115KV and
`above unless declared as radial transmission facilities by ISO New England
`QOperating Procedure #3. Based on contingency analysis, initiate dispatch
`actions to assure reliable operation.
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`B. Satellites
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`1.
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`[
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`Receive generator and transmission outage applications. Evaluate
`applications based on contingency analysis to assure reliable operation.
`Disapprove any application that adversely impacts Satellite operations
`and/or deemed to be in violation of SO New England Criteria, Rules and
`Standards, ISO New England Operating Procedures and 1SO New England
`Transmission Operating Guides.
`
`Using contingency analysis, review unit commitrment schedules issued by
`IS0 Mew England to assure that the reliability standards specified by
`Satellite Operating Procedures, ISO New England Criteria, Rules and
`Standards, 150 New England Operating Procedures, and ISO New England
`Transmission Operating Guides are met.
`
`Monitor Power flows on all transmission facilities including voltages below
`115KV and interconnection points associated with each satellite's region,
`Inform ISO New England of any operating condition that has the potential
`to reduce reliability of the bulk power system below the level prescribed by
`Sarellite Operating Procedures. ISO New England Criteria, Rules and
`Standards, ISO New England Operating Procedures and 1SO New England
`Transmission Operating Guides,
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`ECONOMIC DISPATCH
`A. IS0 New England
`
`Cemtinuously monitor the bulk power sysiem loading conditions and determine
`the most economical allocation of energy resources considering system frequency,
`system load, reserve, reliability, and other system specific requirements. ISO New
`England will improve economic dispatch through the purchase and sale of energy
`reserves from dispatchable contracts or Agreements with external control areas.
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`A
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`A. IS0 New England
`1. Maintain a sufficient number of generating units on AGC 1o satisfy
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`reliability, economic and tie line regulation requirements. Units on AGC
`should be selected to achieve the best economics possible while
`mainizining system reliability and/or control performance.
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`2 Supply AGC pulsing and setpoint directives to units under AGC on the
`approved Data Communications Network,
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`Satellites or Participant/SCADA Centers
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`Satellites or Participant/SCADA Centers with units that have been designated as
`required to provide automatic generation control, will supply or support a data
`communications facility that can receive set point or pulsing data from ISO New
`England and re-transmit the control signals to the individual unit controllers under
`the standards defined by Crileria Rules and Standards No, 13 (IS0 New England
`Metering and Telemetering Criteria) .
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`V. CONTROL AREA INTERCHANGE AND INADVERTENT
`
`A, IS0 New England
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`1. Schedule, monitor, and maintain the 1SO New England Control Area
`Interchange with HQ, NB and NYPP while adhering to NERC, NPCC and
`[SO Mew England system operating criteria.
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`2 Forecast Inter-area transfer capabilities, consistent with scheduling
`peniods, (hourly, weekly, monthly) to be used as delimiters in the
`scheduling of inter-area transfers.
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`VL CONTRACT ADMINISTRATION
`A. IS0 New England
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`Monitor, schedule for delivery, andfor suspend available power contracts with
`other Control Areas and external non-Participants based upon contract availability
`criteria, the optimization of system economics and/or system reliability
`constraints.
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`VII. Co
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`(DUTIES UNIQUE TO HYDRO PLANTS) (tentative)
`A. 150 New England
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`1.
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`Develop hourly energy schedules for the Moore, Comerford, Wilder and
`Harriman stations, based on the daily energy totals provided by
`Participant.
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`Direct generation contro] of Connecticut and Deerfield River stations
`through the appropriate Panticipant river dispatch center,
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`Provide economic dispatch schedules to stations that are managed by the
`owning company for which ISO New England schedules the energy.
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`Develop weekly, daily, and hourly generation/pump schedules in
`conjunction with water resource management for Northfield Mountain and
`Bear Swamp.
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`Schedule and monitor the hourly energy allocations for the Harris and
`Wyman stations based on period energy allocations supplied by the Maine
`Satellite.
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`Issue generation control directive for the Maine hydro units through the
`Maine Satellite.
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`Callect other hydro systems” hourly/daily generation totals from
`Participants, Satellites or SCADA cenlers to be incorporated into unit
`commitment, development of hourly real-time load and the interchange
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`PTICINg processes.
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`Develop hourly generation estimates for run-of-the-river hydro units, for
`the purpose of creating an input to unit commitment and the calculation of
`hourly real-time load, when such estimates are derived from historical
`plant averages.
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`Satellites (General)
`No special treatment for hydro units unless specified below.
`Maine
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`1. Determine the daily energy allocation total for the Harris and Wyman
`stations,
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`2 Schedule and manage the Maine river systems while utilizing the hourly
`Harris and Wyman station schedules supplied by ISO New England.
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`3. Manage and operate all Maine miscellaneous hydro units.
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`4, Supply IS0 New England with all its hydro unit limitations and
`COnsiraints,
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`PSNH
`1. Manage and operate all New Hampshire hydro units,
`2. Supply ISO New England with all its hydro unit limitations and
`COnsiraints.
`REMVEC
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`Maintain the remote “dump-the-pump™ capability for Bear Swamp used for
`system secunty/reliability.
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`VELCO Dispaich/SCADA Center
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`1. Provide hydro scheduling and data collection services for all the VELCO
`Participants.
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`2. Manage and operate all VELCO miscellaneous hydro units.
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`3, Supply ISO New England with all its hydro unit limitations and
`constraints.
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`- Housatonic Hydro
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`k. Manage the Rocky River, Shepaug, Stevenson, Derby plants. Supply ISO
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`New England, for central dispatch purposes, with 24 hour energy totals
`and operating limits for the same facilities.
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`Supply ISC New England with hour by hour energy estimates for Falls
`Village and Buils Bridge.
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`H. NEPCO (tentative)
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`2,
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`Manage the Connecticut and Deerfield River Systems.
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`Supply ISO New England, for central dispatch purposes, with 24 hour
`energy totals and operating limits for Moore, Comerford, Wilder and
`Hamriman stations.
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`Supply IS0 New England with hourly energy schedules and operating
`limits for all other NEPCO Connecticut and Deerfield River conventional
`hydro stations.
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`Supply IS0 New England with hourly discharge (kefh) from Vemon and
`Deerfield No. 5.
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`V. INTERCONNECTION SCHEDULING
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`A, IS0 New England
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`1.
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`3
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`IX. MAIN
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`Develop and/or coordinate hourly, weekly, monthly, etc. interchange
`schedules for all interchange arrangements between NEPOOL and non-
`NEPOOL Participants. This includes Pool to Pool and Participant to/from
`non-Participant interchange arrangements.
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`Incorporate all scheduled power contracts into the daily unit commitment
`process and communicate to all necessary external parties.
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`Maintain a record by contract of interchange activity.
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`DINATION - GENERATION
`
`A. IS0 New England
`
`Receive and administer requests for long and short term maintenance in
`accordance with ISO New England Operating Procedure No. 5 (Unit Outages).
`IS0 New England will forward requests 1o appropriate Satellites,
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`B. Satellites (Gencral)
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`Receive and study requests for shor term maintenance and recommend
`approval/disapproval to ISO New England.
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`C. Maine
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`The Maine Satellite will coordinare short term maintenance requests for all
`generators under their dispatch jurisdiction and forward all requests to ISO New
`England for final approval/disapproval.
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`D. Paruicipants
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`Participant personnel, excluding Maine companies, will submit requests for long
`and short term generator maintenance directly to designated 1S0 New England
`staff. Maine companies will submit requests for long term generator maintenance
`directly to ISO Mew England and short term requests will be coordinated by the
`Maine Satellite as noted in jtem IX C. above.
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`X NER
`A. IS0 New England
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`L. Initiate and administer Claimed Capability and Response Rate audits on
`Participant hydro and thermal generating units in accordance with ISO
`New England CRS #4 - Rating and Auditing Generating Capability and
`CR3 #9 - Response Rate Tests.
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`2. Give authonzation for Participant initiated demonstrations.
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`3. Assure that the appropriate Satellite is informed whenever a ISO New -
`England or Participant initiated Demonstration is scheduled.,
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`XI. OPERATING RESERVE
`A, IS0 New England
`
`Maintain a sufficient amount of Operating Reserve in accordance with IS0 New
`England OF #8 - Operating Reserve. If available capacity is insufficient 1o
`provide adequate Operating Reserve, 1SO New England will implement the
`various Actions of ISO New England OP #4 - Action During a Capacity
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`Deficiency andfor ISO New England OP #7 - Action in an Emergency.
`Satellites
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`Support ISO New England in maintaining the ISO New England Operating
`Reserve by implementing the various Actions of ISO New England OP #4 -
`Action During a Capacity Deficiency and/or ISO New England OP #7 - Action in
`an Emergency.
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`XO. SYSTEM LOAD FORECASTING
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`IS0 New England
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`Forecast and update the present day's forecast of IS0 New England hourly loads
`for the purpose of wnit commitment and power contract scheduling,
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`XM THERMAL UNIT COMMITMENT
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`[SO New England
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`1 Develop unit commitment/de-commitment schedules for all generators
`available for central dispatch.
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`8 Supply the ISO New England Satellites, and a contact point declared by
`the lead Participant of dispatchable units with the most current unit
`commitment/de-commitment schedules.
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`3. Coordinate activities between ISO New England, Satellite and Participant
`personnel on marters relative to the operation of the NEPOOL Participant
`generating facilities.
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`Satellites
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`Recommend changes to unit commitments or incremental loading of units for the
`purpose of maintaining area voltage, maintaining system stability, andfor meeting
`thermal transmission requirements. Requests will normally be made to ISO New
`England unless emergency conditions justify immediate communications with the
`generation staticns.
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`Paricipant Dispatch/SCADA Centers
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`Recommend changes to unit commitments or incremental loading of units to
`maintain area voltage and or to meet thermal transmission requirements. Requests
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`will normally be made to ISC New England unless emergency conditions justify
`immediate communications with the gencration stations.
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`XTV. UNIT CONTROL MODES AND OPERATING LIMITS
`A. IS0 New England
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`L. Maintain all unit control modes and operating limits on all units under IS-EI-
`' MNew England direct generation control.
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`2. Maintain operating characteristics, such as heat rate curves, response rates,
`fuel price, ete. of all NEPOOL Panicipant generating units via the ISO
`New England Energy Management System andfor by communicating with
`specific generating units or the appropriate Satellite or Participant system
`operator,
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`3 Compile and maintain all necessary information, as required by 1SO New
`England Billing to properly reflect all NABS limitations and constrainis,
`for generating units under IS0 New England direct generation control (see
`exceptions for Maine and PSNH listed in items C and D below).
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`4. Notify appropriate Satellite(s) whenever 1SO New England identifies a
`generator resiriction or limitation that may affect System security.
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`B. Satellites (General)
`I. Incorporate known generator operating restrictions into security analysis.
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`2. Notify ISO New England whenever the Satellite identifies a generator
`restriction or limitation that may affect Sysiem security.
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`C. Maine
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`1. In conjunction with IS0 New England, monitor and update, as required,
`all unit control modes and operating limits of all Maine Satellite
`Eenerating units.
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`2. Compile and maintain all necessary information, as required by ISO New
`England Billing, 1o properly reflect all NABS limitations and constraints,
`for generating units in Maine.
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`D. PSNH
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`XVI.
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`Compile and maintain all necessary information, as required by ISO New England
`Billing, 1o properly reflect all NABS limitations and constraints, for hydro units
`controlled by the PSNH Satellite.
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`NEPOOL Participant Generators
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`Generators have an obligation to notify ISO New England directly o:r through an
`intermediary of all restrictions or limitations.
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`BACK-UP FACILITIES
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`IS0 New England
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`1 Be responsible for supplying a back-up plan for all functions for which
`ISO New England is responsible.
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`2. Supply or make arrangements for all necessary hardware/software to
`execute the plan required by (1).
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`Satellites
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`Supply a back-up plan and back-up hardware adequate to meet the Satellite's
`dispatch abligations.
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`ATI
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`IS0 New England
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`Supply to the Data Communications Network, dispatch data that originates within
`or is collected by the ISO New England Energy Management System and is
`needed by the Satellites or Participant Dispatch/SCADA centers.
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`Participants or Sate]lite
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`Provide facilities 1o collect the real-time data required to perform central dispatch
`and place the data onto the ISO New England Data Communications Network
`either directly or indirectly through an intermediary such as a satellite. Criteria
`Rules and Standards No. 13 (ISO New England Metering and Telemetering
`Critenia) defines specific requirements.
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`NEPOOL 4853
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`Rois
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`XVIL COMMUNICATIONS -VOICE
`A. IS0 Mew England
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`Provide the necessary voice communications required to disseminate centrel
`dispatch operational directives directly to wility owned and non-utility generating
`stations and units. Maine will act as an intermediary for units in Maine. Other
`Satellites or Participant Dispatch/SCADA centers may act as voice
`communications intermediaries, provided that ISO New England and the Satellites
`agree to the change, and that the speed and reliability offered by direct
`communications is not compromised.
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`B. Satellites
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`L. Issue security related MW dispatch orders to 150 New England. Under
`emergency conditions, and under all conditions for units in Maine, the
`appropriate satellite can initiate direct contact with the generalion station.
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`2. Act as liaisons of dispaich orders fram 15O New England related o
`Dispatchable Loads.
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`XVIL DISPATCH COMPUTERS AND PERIPHERAL DISPATCH EQUIPMENT
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`A. 150 New England
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`Be responsible for scheduling and coordinating of planned outages of 150 New
`England, Satellite, Participant Dispatch/SCADA operating computers, Data
`Communications Network, microwave communications channels, and any other
`equipment that deprives 1SO New England, the satellites or Participant of normal
`operating data, AGC pulsing capability or voice communications.
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`OP-1-5PT-noc-approved doc
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`NEPOOL 4894
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