Generation Desk Logging

Transcription

1 1. Provides guidelines for the different logging scenarios used by the Generation Dispatcher. Caution: Since Settlements reconciles and/or is supported by data from these entries, accurate and detailed log entries are critical. Discrepancies between log entries and the records of the other entities result in disputed settlement data. 2. Generation Logging Types The following table represents Generation Desk-specific logging types and their descriptions. Refer to Figure 1 for a sample log for the Generation Desk. Note: These logs are subject to change and may not be consistent with current SLIC log titles. Additional AS Procurement Ancillary Services (AS) Deficiency AS Non-Compliance AWE EDE Instructions for Generators / Correction-96 Hour Frequency Disturbance (Instantaneous Change) Log any request to increase AS procurements. Log any A/S deficiencies in the Real-Time market. Log any manual ISO instruction or ISO system problem, which prevent a unit from delivering its Scheduled AS commodity. Note: Validated by the OS- Data and Compliance group. Alerts, Warnings, and Emergencies (AWE) Notifications (See ISO 4420 System Emergency). Log all manual dispatches that require changes in the data once they are out of the Generation Desk control. Log all Exceptional Dispatches sent via ADS. Log all Exceptional Dispatches for RMR Condition 1 and 2 units. Note: Validated by the Market Services (MS); Market Information group. Log all frequency deviations in which the change in frequency occurs in < 5 minutes and ACE x ΔHz -50. Include the cause of the deviation. Page 1 of 6

2 Frequency Excursion (Gradual Change) CPS2 Violation Potential DCS Event Generation Notes HASP Branch Group De-rate HASP Branch Group Re-rate HASP Load Forecast Load Data Error Load Shedding Market Message - Other Market Participant Conflict Log all frequency deviations in which the change in frequency occurs in > 5 minutes and ACE x ΔHz -50. Include the cause of the deviation. Log unusual reasons for CPS2 violations. Note: Validated by OS-IEA group. Log system disturbances due to loss of generation: The resource that relayed. Time of event. Time the ACE returned to pre-disturbance level (or crossed zero). Log events that may affect the normal performance of the Generation desk and cannot be logged in any other generation desk log. Note: Mainly used to support further research and operational audits. Caution: This log should not be used to record instructional changes or to communicate data corrections. Log notifications to Branch Group De-rate in HASP. Log notifications to Branch Group Re-rate in HASP. Log HASP or Short Term Load Forecast revision. Log load data error amount and reason. Log load shedding requests regarding the ISO grid. Log any message requiring communication to the markets and is not covered under any other Market Operator log. 5-minute Dispatch Interval Price System trouble/return Incorrect prices on OASIS Scheduling limits, etc. Log details as a result of an issue the ISO has with any SC that potentially affects the performance of ISO operations and the market (e.g., SC is unable or unwilling to abide by market rules, demonstrates inappropriate market behavior, etc.). Page 2 of 6

3 Log when Reserves (ORs) requirements are not met. There are three choices for deficiency: 1. The actual ORs were lower than the requirement. 2. The Spinning Reserves did not account for at least 50% of the total. 3. Both of these conditions occurred. Select one of four possible dispatch reasons that reserves were dispatched: OR Event 1. Meet supply requirements for load variations. 2. Replace generating capacity and energy lost due to forced outages of generation or transmission equipment. 3. Meet on-demand obligations. 4. Replace energy lost due to curtailment of interruptible imports. Ensure the following information is included in the SLIC log: Other Compliance Issues The hour the OR requirement was not met (a separate log for each hour if ORs were not met in more than one hour). Deficiency reason. Event date and time. Recovery time. Whether or not Reserves were dispatched (via drop down). Reason ORs were dispatched. OR requirement in MW. OR actual in MW. % of ORs that are Spinning Reserves at the time of deficiency. Log any manual ISO instruction or ISO system problem that causes a unit to incur Uninstructed Deviation Penalty (UDP) or the Metered Subsystem (MSS) Deviation Penalty. Log items that may be a violation according to the Enforcement Protocol Non-AS compliance issues, questionable bids. This log is validated by the OS- Data and Compliance group. Page 3 of 6

4 Regulation Non- Compliance Request for Additional AS Bids Request for Additional Supplemental Bids RMR AS Instructions RMR Unit Substitution Real-Time Over- Generation Skipped Bids Skipping Ancillary Service Energy Bids Voltage Mitigation Log any manual ISO instruction or ISO system problem that would prevent a unit from providing its scheduled Regulation. This log is validated by the OS-Data and Compliance group. Log all requests for additional AS bids. Log requests for additional Supplemental Energy bids. Log Real-Time Reliability Must Run (RMR) AS dispatch. This log is validated by the MS-Market Information group. Log causes and details whenever there is a substitution of units to supply RMR requirements. This log is validated by the MS-Market Information group. Log all Dispatch decisions, declarations, announcements, and orders, supported with reasons and data. Log reasons whenever an operator stops an instruction from the market optimization software. Log reasons whenever Ancillary Service Energy Bids have been skipped. Which AS types, which hours? Obtain Shift Manager approval. Log all the Voltage Mitigation situations using a Generator. 3. Real-Time (RT) Re-Rates & De-Rates The following table represents the required logging criteria for RT Re-Rates (increases) and De-Rates (decreases) in branch group HASP Transfer Capabilities (OTCs): Part RT HASP Re-Rates & De-Rates Logging Descriptions a) Affected branch group b) Path direction c) From (MW) to (MW) d) Start and end HE e) Date f) Reason g) First affected hour h) First HE run Page 4 of 6

5 4. AWE Stage 3 Load Curtailments The following table represents the required logging criteria for an Alert-Warning- Emergency (AWE) Stage 3 load curtailments, as ordered by the Shift Manager: Part RT HASP Re-Rates & De-Rates Logging Descriptions a) Interruptible/firm. b) Time issued. c) Start and end time. d) AWE declared or terminated. e) Totals for ISO, CDWR, PASA, PGAE, SCE, SDG&E, Vernon, and any others. Operationally Affected Parties Shared with Public. References Resources studied in the development of this procedure and that may have an effect upon some steps taken herein include but are not limited to: CAISO Tariff ISO NERC Requirements WECC Criterion Other References Definitions Unless the context otherwise indicates, any word or expression defined in the Master Definitions Supplement to the CAISO Tariff shall have that meaning when capitalized in this. The following additional terms are capitalized in this when used as defined below:. Page 5 of 6

6 Version History Version Change Date 6.2 Added requirement for logging frequency disturbances and 10/22/2015 excursions by Generation Dispatchers. 6.3 Changed all references to CAISO to ISO. Updated 4/7/2017 formatting and grammar. 6.4 Updated to remove any and all related references of procedures being retired 5210, 5210D, and /24/ Section 1.2: Updated Frequency logging information. Formatting and grammar corrections. 2/06/2018 Technical Review Review By Content Expert Date s 1/19/18 Real-Time Operations 1/23/18 Page 6 of 6