Power system and control method of power system
AssigneeHitachi-GE Nuclear Energy, Ltd.
InventorsYohei Murakami, Masahiro Watanabe
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Abstract
A power system, which can appropriately control an output power of a power plant, includes a power plant, a power transmission flow limiter inserted between the power plant and a substation via transmission lines and, and a control system, wherein the control system outputs to the power transmission flow limiter a power transmission flow limitation signal CP indicating that an output power P of the power plant should be limited; and the power transmission flow limiter limits the output power P of the power plant, which is transmitted via the transmission lines and on the basis of the power transmission flow limitation signal CP.
Claims7
A power system comprising:
- a power plant including a steam condenser, a turbine, a steam generator generating steam, a turbine bypass valve that distributes the steam generated by the steam generator to the steam condenser and the turbine, and a generator driven by the turbine;
- a power transmission flow limiter inserted between the power plant and a substation via transmission lines;
- and
- a control system,
- wherein
- the control system outputs to the power transmission flow limiter a power transmission flow limitation signal indicating that output power of the power plant should be limited,
- the power transmission flow limiter limits the output power being transmitted via the transmission line from the power plant, on a basis of the power transmission flow limitation signal, and
- the control system sets an upper limit of a limitation amount of the output power limited by the power transmission flow limitation signal to a value determined based on an opening degree of the turbine bypass valve.
A method of controlling a power system
- wherein
- the power system includes:
- a power plant equipped with a steam condenser, a turbine, a steam generator that generates steam, a turbine bypass valve that distributes the steam generated by the steam generator to the steam condenser and the turbine, and a generator driven by the turbine;
- a power transmission flow limiter inserted via transmission lines between the power plant and a substation;
- and
- a control system, and
- wherein
- the method includes:
- a step in which the control system outputs to the power transmission flow limiter a power transmission flow limitation signal indicating that an output power of the power plant should be limited,
- a step in which the power transmission flow limiter limits the output power of the power plant transmitted through the transmission lines on a basis of the power transmission flow limitation signal,
- wherein the control system sets an upper limit of a limitation amount of the output power limited by the power transmission flow limitation signal to a value determined based on an opening degree of the turbine bypass valve.
Dependencies are inferred from the claim text.