System and process for controlling active power in a power generation plant

摘要

The present invention describes a process for controlling the active power injected into the grid by a generating plant for contributing to the stability of the power grid in the event of frequency variations where, in response to a deviation in grid frequency, each generating unit calculates an active power variation parameter generated based on a first parameter stored in said generating unit, said first parameter being representative of a respective contribution of said generating unit to a required variation in total active power of the generating plant, and where a central control unit of the generating plant connected to each generating unit updates the value of the first parameters when changes are produced therein.

主权项

1. Process for use in a distributed power generation plant (1) formed by at least two generating units (2), the process comprising:
prior to a deviation in grid frequency, calculating by means of a central control unit of the generating plant connected to each generating unit, a first parameter representative of a respective contribution of said generating unit to a requirement in total active power variation of the generating plant if a potential grid frequency event occurs, where the first parameter is selected from the group consisting of Ki, Ci, or a combination thereof, sending the first parameter to said generating unit, updating an active power regulator of each generating unit with the first parameter, and calculating in response to the deviation in grid (7) frequency, by means the active power regulator of the generating unit, an active power variation command based on the first parameter, and wherein the process controls active power generated by the distributed power generation plant.