Method for operating a combined heat and power plant on a power grid

摘要

The invention relates to a method for operating a cogeneration plant (10) on a power network (11), wherein a negative secondary control power retrieval signal (14) is received via a communication device (13) and in response to the polling signal (14) Reference value signal (16) for one of the cogeneration plant (10) in the power grid (11) to be delivered electrical power (12) is generated and that of the cogeneration plant (10) actually in the power grid (11) electrical power (12) by means of the setpoint signal (16) is set. The invention provides that a predetermined full power value is assumed for the generation of the desired value signal (16) and this is reduced by a call value of the call signal (14) and a demand signal (24) for a primary control power to be provided is determined, and the desired value signal (16). is additionally generated in response to the demand signal (24) by starting from the full power value (25) and the retrieval value (26) of the retrieval signal (14) a demand value (27) of the demand signal (24) is included.