3.3.2: updated format 3.4: added verbiage “obtain revenue quality meter data associated with”; removed “meters on a daily basis”. 4.1: removed verbiage “for Station and”; removed reference to section 10 4.1.1: “kWh or” to statement 4.3: removed section and incorporated in related sections (ISOME 5.1.2, SCME 6.2.1) 5: Update verbiage; replace “revenue” with certified” 5.1: removed statement referencing section 3.2.2. and 3.2.4.2 5.1.1: added Tariff reference including RMDAPS verbiage 5.1.2: added Tariff reference and related Tariff Language to cover removal of section 4.3 5.1.3: removed verbiage” currently OMAR On-Line or web access or OMAR through FTP” 5.1.4: added verbiage “Resolution of” and “Submit To” 5.1.5: removed verbiage “including communication devices” 6: Updated “Responsibilities” section to include “Settlement Quality Data Plan”; removed possible requirement section; removed statement covering “Scheduling Coordinators that represent…” incorporated within section 6.2….. 6.1: Added new section “Settlement Quality Meter Data Plan” 6.1.1: Added new section “CAISO Review of SQMD Plan” 6.1.1.1: Removed “Loss Factor” incorporated into new updated section 6.2.1.1;
the guidelines provided for the SC Self Audit process. Version 5 446/456 459/457 June 30, 2011 BPM changes to Section 12 Proxy Demand Resource to include Reliability Demand Response Resource program – Tariff effective 4/1/12. Credit Reform (FERC 741) and Settlement Timeline Change Process (SPTC) Changes - various sections Version 4 431/432 April 1, 2011 BPM changes to Section 12 Proxy Demand Resource. Includes registration process clarification including the ability to register “pseudo locations” and additional language to clarify PDR minimum load reduction requirements. BPM changes to Sections Changes revenue metering business practice for participating generators that are distribution connected resources (DCR), also referred to as distributed generation (DG). In particular, the changes modify the methodology used in determining the correction factor, attributed to losses and credits incurred to virtually meter at the CAISO Point of Receipt (POR), and how it is applied to CAISO metered entities revenue meters. Version 3 173 August 10, 2010 BPM changes to further clarify Payment Acceleration language and incorporate Demand Resource implementation PRR 173 Metering BPM Version 2 79 November 2, 2009 PRR 079 Metering BPM BPM update to reflect Payment Acceleration implementation Version 1 March 13, 2009 Original BPM TABLE OF CONTENTS
Attachment A: End Use Meter Standards All metering is of a revenue class metering accuracy in accordance with the ANSI C12 standards on metering and any other requirements of the relevant UDC or Local Regulatory Authority that apply. Such requirements apply to meters, current transformers, potential transformers, and associated equipment. ANSI C12 metering standards include the following: ANSI C12.1 – American National Standard Code For Electricity Metering ANSI C12.6 – American National Standard For Marking And Arrangement Of Terminals For Phase-Shifting Devices Used In Metering ANSI C12.7 – American National Standard For Watt-hour Sockets ANSI C12.8 – American National Standard For Test Blocks And Cabinets For installation Of Self-Contained A-Base Watt-hour Meters ANSI C12.9 – American National Standard For Test Switches For Transformer-Rated Meters ANSI C12.10 – American National Standard For Electromechanical Watt-hour Meters ANSI C12.11 – American National Standard For Instrument Transformers For Revenue Metering, 10 kV BIL Through 350 kV BIL ANSI C12.16 – American National Standard For Solid-State Electricity Meters ANSI C12.18 – American National Standard For Protocol Specification For ANSI Type 2 Optical Port ANSI C12.20 – American National Standard For Electricity Meters 0.2 and 0.5 Accuracy Class ANSI C57.13 – IEEE Standard Requirements for Instrument Transformers
that the CAISO Authorized Inspector monitor the generation output using other plant instrumentation or have the plant operator maintain the generation at constant output. C2.5 Instantaneous Demand CAISO Authorized Inspector compares the instantaneous demand from the test meter to the instantaneous demand from the revenue meter and indicates the results on the Site Verification Data Sheet C3. Revenue Meter Upon successful completion of the Instrument Transformer Verification and the Metering Service Verification, the CAISO Authorized Inspector either performs or witnesses a test of the Revenue meter. The recommended practice is to test the meter in place using a CAISO approved watt-hour/var-hour standard and load box. The accuracy test should be performed in the test mode to prevent the registration of test data in the meter. Before taking the meter out of service, the CAISO Authorized Inspector verifies with CAISO Meter Engineering that all clearances and permits are in effect. The CAISO Authorized Inspector records the time the meter was taken out of service, the output level of the generator, if and the time that the meter was placed back in service. All of the following information is recorded on the Site Verification Data Sheet. C3.1 Accuracy Test CAISO Authorized Inspector either performs or witnesses the performance of a calibration test on the revenue meter for watt-hour and var-hour function for both directions of energy flow (delivered/received). Tests should be performed with and without compensation applied to get a true test of the metered site. Utilize a CAISO approved test set to perform the calibration test. C3.2 Transformer and Line Loss Compensation Settings & Instrument Transformer Correction Factors The Transformer and Line Loss Correction Factors compensation values, in addition to the correction factors from the meter are compared to the values found in the owner’s documentation for the specific location. If the values differ, the CAISO Authorized Inspector makes a note in the remarks section of the Site Verification Data Sheet.