COMBINED ELECTRICAL POWER PLANT

摘要

A combined electrical power plant is provided to supply power to a grid and a method to operate such a combined electrical power plant comprising a thermal power generation facility and an energy storage facility with a suitable energy storage capacity being able to supply additional electrical power to the grid and to receive and store electrical power from the thermal power generation facility or from the grid. Both facilities are electrically coupled to providing a combined power output to the grid and further comprise a plant controller to process the demand signal and to generate at least a first control signal and a second control signal from the demand signal, where the first control signal is a smoothened function of time of the demand signal resulting from a smoothening process executed by the plant controller taking into account operational characteristics of the thermal power generation facility.

主权项

1. A combined electrical power plant connected to an electrical grid to supply electrical power to the grid comprising a thermal power generation facility having a response time to supply a demanded amount of electrical power to the grid, which is limited by a thermal process, an energy storage facility with a suitable energy storage capacity being able to supply additional electrical power to the grid and to receive and store electrical power from the thermal power generation facility or from the grid, both facilities are electrically coupled to provide a combined power output to the grid according to a demand signal specifying the demanded amount of power as a function of time between a first and a second point of time to be supplied to the grid, and a plant controller to process the demand signal and to generate at least a first control signal and a second control signal from the demand signal, where the first control signal is a smoothened function of time of the demand signal resulting from a smoothening process executed by the plant controller taking into account operational characteristics of the thermal power generation facility to operate the thermal power generation facility under improved conditions, and to transmit the first control signal to the thermal power generation facility to supply power to the grid in accordance with the first control signal, and to transmit the second control signal to the energy storage facility to supply or to receive power in accordance to the second control signal being adapted to provide the combined power output in accordance to the demand signal, where the capacity of the energy storage facility is adapted to nominal power and ramp rate characteristics of the thermal power generation facility in order to at least minimize differences between demand signal and the provided combined power output at any point in time between the first and second points of time.