Special Protection System definition

Special Protection System. “SPS”): A system that reduces or trips generation under contingency outages to maintain system stability or to limit overloads on electric system facilities.

Special Protection System means an automatic protection system designed to detect abnormal or predetermined system conditions, and take corrective actions other than and/or in addition to the isolation of faulted components to maintain system reliability. Such action may include changes in demand, generation (MW and Mvar), or system configuration to maintain system stability, acceptable voltage, or power flows. A Special Protection System does not include (a) underfrequency or undervoltage Load shedding or (b) fault conditions that must be isolated, or

Special Protection System. (SPS) shall mean an automatic protection system or remedial action scheme designed to detect abnormal or predetermined system conditions, and take corrective actions other than, and/or in addition to, the isolation of faulted components, to maintain system reliability. Such action may include changes in demand (MW and MVar), energy (MWh and MVarh), or system configuration to maintain system stability, acceptable voltage, or power flows. An SPS does not include (a) underfrequency or undervoltage load shedding, (b) fault conditions that must be isolated, (c) out-of-step relaying not designed as an integral part of an SPS, or (d) Transmission Control Devices.

Examples of Special Protection System in a sentence

• The assessment shall reflect applicable inputs including, but not limited to: load, generation output levels, known Protection System and Special Protection System status or degradation, Transmission outages, generator outages, Interchange, Facility Ratings, and identified phase angle and equipment limitations.

• A generator being disconnected from the System by fault clearing action or by a Special Protection System is not considered pulling out of synchronism.

• The Transmission Operator shall immediately inform the Reliability Coordinator of the status of the Special Protection System including any degradation or potential failure to operate as expected.

• The evaluation shall reflect applicable inputs including, but not limited to, load forecasts; generation output levels; Interchange; known Protection System and Special Protection System status or degradation; Transmission outages; generator outages; Facility Ratings; and identified phase angle and equipment limitations.

• Consider c(s, t) = expp(s(u + tw)), a variation by geodesics with s such that su ⩽ ρ .

• The Transmission Operator shall immediately inform the Reliability Coordinator of the status of any Special Protection System, that may have an inter-Balancing Authority, or inter- Transmission Operator impact, including any degradation or potential failure to operate as expected.

• Monitor Special Protection Systems that may have an inter-Balancing Authority, or inter- Transmission Operator impact (e.g., could potentially affect transmission flows resulting in a SOL or IROL violation) is armed, the Reliability Coordinators shall be aware of the impact of the operation of that Special Protection System on inter-area flows.

• If major Interconnection Customer’s Interconnection Facilities for the Large Generating Facility have been identified in the Phase I Interconnection Study, such as telecommunications equipment to support a possible Special Protection System (SPS), distribution feeders to support back feed, new substation, and/or expanded substation work, permitting and material procurement lead times may result in the need to alter the proposed Commercial Operation Date.

• If ERCOT determines that ERCOT System reliability would be enhanced, for a defined period of time, ERCOT may direct WGRs under the control of a Special Protection System (SPS) to limit power increases due to frequency if there is risk of an SPS operation due to a low frequency event.

• The configuration of the SPS shall be as set forth in the (1) “System Impact Study for the Special Protection System for the Athens Power Plant” report dated October 16, 2006 as submitted to the Transmission Planning Advisory Subcommittee, attached hereto as Exhibit A, and (2) the “Conceptual Report –Redundant SPS” attached hereto as Exhibit B, as supplemented by the Redundant SPS Configuration Study.

More Definitions of Special Protection System

Special Protection System shall have the meanings as set forth in the ERCOT Requirements. TSP and the ISO will examine the need and feasibility of these arrangements in cooperation with the Generator. In the event that the ISO determines that such an arrangement is required, then TSP, the ISO, and Generator will cooperate to design and install the necessary facilities, and this Agreement will be amended to document such arrangement.