Common use of Reactive Power Requirements Clause in Contracts

Reactive Power Requirements. Generation resources must be capable of producing a defined quantity of reactive power to maintain a Voltage Profile established by ERCOT Nodal Protocol 3.15. The generator voltage-var schedule, voltage regulator, and transformer ratio settings will be jointly determined by TSP and Generator to ensure proper coordination of voltages and regulator action. The Plant must generate reactive requirements for the Plant and GIF. TSP may, in order to maintain security of the ERCOT power system, request Generator to adjust voltage schedule to accept or supply reactive power. 1. Synchronous Generators shall comply with the following reactive power requirements: an over-excited (lagging) power factor capability of ninety-five hundredths (0.95) or less and an under- excited (leading) power factor capability of ninety-five hundredths (0.95) or less, both determined at the generating unit’s maximum net power to be supplied to the ERCOT transmission grid and at the transmission system Voltage Profile established by ERCOT, and both measured at the Point of Interconnection. The reactive power requirements shall be available at all MW output levels. 2. Induction Generators shall comply with the following reactive power requirements: an over-excited (lagging) power factor capability of ninety-five hundredths (0.95) or less and an under- excited (leading) power factor capability of ninety-five hundredths (0.95) or less, both determined at the generating unit's maximum net power to be supplied to the ERCOT transmission grid and at the transmission system Voltage Profile established by ERCOT, and both measured at the Point of Interconnection. The reactive power requirements shall be available at all MW output levels and may be met through a combination of the Generation Resource’s Unit Reactive Limit (“URL”), which is the generating unit’s dynamic leading and lagging operating capability, and/or dynamic VAR capable devices. For Wind Generation Resources (“WGR”), the reactive power requirements shall be available at all MW output levels at or above ten percent (10%) of the WGR’s nameplate capacity. When a WGR is operating below ten percent (10%) of its nameplate capacity and is unable to support voltage at the Point of Interconnection, ERCOT may require a WGR to disconnect from the ERCOT transmission grid. 3. Other Generators shall comply with the following reactive power requirements: an over-excited (lagging) power factor capability of ninety-five hundredths (0.95) or less and an under-excited (leading) power factor capability of ninety-five hundredths (0.95) or less, both determined at the generating unit’s maximum net power to be supplied to the ERCOT transmission grid and at the transmission system Voltage Profile established by ERCOT, and both measured at the Point of Interconnection. The reactive power requirements shall be available at all MW output levels and may be met through a combination of the Generation Resource’s URL, which is the generating unit’s dynamic leading and lagging operating capability, and/or dynamic VAR capable devices. For Intermittent Renewable Resources (“IRR”), the reactive power requirements shall be available at all MW output levels at or above ten percent (10%) of the IRR’s nameplate capacity. When an IRR is operating below ten percent (10%) of its nameplate capacity and is unable to support voltage at the Point of Interconnection, ERCOT may require an IRR to disconnect from the ERCOT transmission grid.