ISO New England Operating Procedures OP-18 - Metering and Telemetering Criteria Appendix D

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Appendix D -

OP-18 Metering And Telemetering Diagrams

Table of Contents

Figure 1 - Telemetry MW/MVAR Polarity ............................................... 2

Terms & Definitions ................................................................................ 3

Figure 2 - Single Generator Asset & Basic Generation Metering Concepts ................................................................................. 4

Figure 3 - Multiple Generator Assets - Dynamic (Ratio) Allocation of shared station service ............................................................ 5

Figure 4 - Multiple Generator Assets - Dynamic (Condition) Fixed (Ratio) Allocation of shared station service ......................... 6

Figure 5 - Multiple Generator Assets - Static (Ratio) Allocation of shared station service ............................................................ 7

Figure 6 - Combined Cycle Generator Assets ...................................... 8

Figure 7 – DC coupled asset metering distribution concept ............... 9

OP-18 Appendix D Revision History ....................................................... 10

ISO New England Operating Procedures OP-18 - Metering and Telemetering Criteria Appendix D

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Figure 1 - Telemetry MW/MVAR Polarity

ISO New England Operating Procedures OP-18 - Metering and Telemetering Criteria Appendix D

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Terms & Definitions

ISO New England Operating Procedures OP-18 - Metering and Telemetering Criteria Appendix D

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Figure 2 - Single Generator Asset & Basic Generation Metering Concepts

ISO New England Operating Procedures OP-18 - Metering and Telemetering Criteria Appendix D

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Figure 3 - Multiple Generator Assets - Dynamic (Ratio) Allocation of shared station service

ISO New England Operating Procedures OP-18 - Metering and Telemetering Criteria Appendix D

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Figure 4 - Multiple Generator Assets - Dynamic (Condition) Fixed (Ratio) Allocation of shared station service

ISO New England Operating Procedures OP-18 - Metering and Telemetering Criteria Appendix D

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Figure 5 - Multiple Generator Assets - Static (Ratio) Allocation of shared station service

ISO New England Operating Procedures OP-18 - Metering and Telemetering Criteria Appendix D

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Figure 6 - Combined Cycle Generator Assets

ISO New England Operating Procedures OP-18 - Metering and Telemetering Criteria Appendix D

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Figure 7 – DC coupled asset metering distribution concept

ISO New England Operating Procedures OP-18 - Metering and Telemetering Criteria Appendix D

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OP-18 Appendix D 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

Rev 0 04/13/99

Rev 1 10/21/99

Rev 2 06/21/02

Rev 3 10/01/04

Rev 4 02/01/05 Updated to conform to RTO terminology

Rev 4.1 02/13/15 Periodic review performed requiring no changes;

Rev 4.2 01/27/17 Periodic review performed requiring no changes; Made administrative changes required to publish a Minor Revision;

Rev 5 04/10/17 Periodic review performed by procedure owner; Created a new reformatted document; Added required corporate document identity and replaced page numbering with Page XofY format in all page footers; Deleted original diagram; Added new Figures 1 through 6; Added Terms and Definitions page;

Rev 5.1 01/23/19 Periodic review performed requiring no changes; Made administrative changes required to publish a Minor Revision;

Rev 6 08/07/20 Periodic review performed by procedure owner; Added Figure 7 – DC metering distribution concept