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Combined power plant

  • US 10,224,720 B2
  • Filed: 06/20/2014
  • Issued: 03/05/2019
  • Est. Priority Date: 06/27/2013
  • Status: Active Grant
First Claim
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1. A combined power plant for feeding energy into a non-local power network, comprising:

  • at least one turbine power plant comprising a turbine and a connection to the non-local power network to feed energy in from the turbine power plant to the non-local power network;

    at least one energy storage installation comprising one or more energy storage modules; and

    a monitoring unit configured to monitor a rotational speed of the turbine, without any need to measure network parameters in the non-local power network, on the basis of a rotational speed-specific characteristic quantity without having to use the control parameters of a network frequency for this purpose, at least while the energy is being fed into the non-local power network,wherein the energy storage installation is connected to the non-local power network separately or via the turbine power plant, andwherein the monitoring unit is connected to a control unit of the appertaining energy storage installation in order to transmit a characteristic quantity signal based on the rotational speed-specific characteristic quantity to the control unit via a data connection, and the control unit of the energy storage installation is configured in such a way that, in response to the characteristic quantity signal, the control unit causes the energy storage installation to feed additional energy into the non-local power network, thereby improving safety against a sudden power failure in the non-local network, based on the rotational speed of the turbines falling, without the energy storage installation having to be connected to a global external network control or to a network agency for the purpose of network-supporting control.

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