Operating Entity Capabilities. MAPPCOR’s and ▇▇▇▇’s real-time EMSs have very detailed state estimator and security analysis packages that are able to monitor both thermal and voltage contingencies every few minutes. State estimation models will be at least as detailed as the IDC model for all Coordinated and Reciprocal Coordinated Flowgates. Additionally, MAPPCOR, MISO, and OATI will be continually working to ensure model synchronization with the then current IDC model. The data MAPPCOR and MISO will utilize in their models will be exchanged either via ICCP links or the NERC ISN. The MISO state estimator and Unit Dispatch System (UDS) will utilize all of these real-time internal flows and generator outputs to calculate both the actual and projected hour-ahead flows (i.e., total Market Flows, Non-Firm Economic Dispatch, and Firm Gen-to-Load Limit) on all of the Coordinated Flowgates. These real-time and hour-ahead flows are uploaded to the NERC IDC. Using real-time modeling, the Market-Based Operating Entity’s internal systems will be able to more reliably determine the impact on Flowgates created by dispatch than the NERC IDC. The reason for this difference in accuracy is that the IDC uses very static SDX data that models generators as either at full output or off. In contrast to the SDX data, the Market-Based Operating Entity’s calculations of system flows will utilize each unit’s actual output, updated at least every 15 minutes on an established schedule.
Appears in 1 contract
Sources: Seams Operating Agreement
Operating Entity Capabilities. MAPPCORSPP’s and ▇▇▇▇MISO’s real-time EMSs have very detailed state estimator and security analysis packages that are able to monitor both thermal and voltage contingencies every few minutes. State estimation models will be at least as detailed as the IDC model for all Coordinated and Reciprocal Coordinated Flowgates. Additionally, MAPPCORSPP, MISO, and OATI will be continually working to ensure model synchronization with synchronization. SPP and MISO will also initiate similar coordination whenever the then current IDC modelmodel is updated. The data MAPPCOR SPP and MISO will utilize in their models will be exchanged either via ICCP links or the NERC ISN. The SPP and MISO state estimator estimators, and a Market-Based Operating Entity’s Unit Dispatch System Systems (UDS) ), will utilize all of these real-time internal flows and generator outputs to calculate both the actual and projected hour-ahead flows (i.e., total Market Flows, Non-Firm Economic Dispatch, and Firm Gen-to-Load Limit) on all of the Coordinated Flowgates. These real-time and hour-ahead flows are uploaded to the NERC IDC. Using real-time modeling, the Market-Based Operating Entity’s internal systems will be able to more reliably determine the impact on Flowgates created by dispatch than the NERC IDC. The reason for this difference in accuracy is that the IDC uses very static SDX data that models generators as either at full output or off. In contrast to the SDX data, the Market-Based Operating Entity’s calculations of system flows will utilize each unit’s actual output, updated at least every 15 minutes on an established schedule.. Market-Based Operating Entities will have the list of Coordinated Flowgates modeled as monitored facilities in its EMS. The Firm limits a Market-Based Operating Entity will use for these third party Flowgates will be the Firm Gen-to-Load Limits determined by the Firm Gen-to-Load Flow calculations. The Market-Based Operating Entity will upload the real-time and projected Firm (7-FN) and Non-Firm (6-NN) flows on these Flowgates to the IDC every 15 minutes, as requested by the NERC IDCWG and OATI (note that under reciprocal operations, some of this 6-NN may be quantified as Priority 2-NH). When the real-time actual or projected flows exceed these Firm Gen-to-Load Flow values on a Flowgate and the Reliability Coordinator who has responsibility for that Flowgate has declared a TLR 3a or higher, the Market-Based Operating Entity will redispatch its system to the amount required by the IDC. The amount of redispatch will be calculated by the IDC. In a TLR 3, the Market-Based Operating Entity could be required to redispatch to the full amount of economic dispatch over the Firm Gen-to-Load Limit. Note the Market-Based Operating Entity may provide relief through either: (1) a reduction of flows on the Flowgate in the direction required, or (2) an increase of reverse flows on the Flowgate. Market-Based Operating Entities will implement this redispatch by binding the Flowgate as a constraint in their Unit Dispatch System (UDS). UDS calculates the most economic solution while simultaneously ensuring that each of the bound constraints is resolved reliably. Additionally, the Market-Based Operating Entity will make any point-to-point transaction curtailments as specified by the NERC IDC. An MBOE’s expected redispatch and relief time will be faster than the 30 minutes required by TLR schedule curtailments, because when the bounds are applied, the systems are designed to provide relief within 15 minutes. The Reliability Coordinator calling the TLR will be able to see the relief provided on the Flowgate as the Market-Based Operating Entity continues to upload its contributions to the real-time flows on this Flowgate.
Appears in 1 contract
Sources: Joint Operating Agreement