Energy storage system for increasing the flexibility of power plants
AssigneeSiemens Aktiengesellschaft
InventorsUwe LENK, Florian REISSNER, Jochen SCHÄFER, Alexander TREMEL
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Abstract
Provision of electricity to an electrical grid is controlled such that the electricity supply from the power plant is reduced to the current electric power demand by charging a thermal energy store(s). As a result, the provision of electricity by renewable energy sources to the electrical grid can be given precedence. The power plant can be connected to a heat pump and/or a refrigeration unit by the thermal energy store(s). The thermal energy store(s) can be used for district heating/cooling networks.
Claims15
1-14. (canceled)
A system, comprising:
- a power plant including a condenser;
- at least one thermal energy store, including a first thermal store thermally coupled to the condenser of the power plant;
- and
- at least one energy conversion device configured to load the at least one thermal energy store during a period of excess power supply.
The system as claimed in 15,
- wherein the at least one thermal energy store includes a heat store and the at least one energy conversion device includes a heat pump, and
- wherein the system discharges the heat store via a district heating grid.
The system as claimed in 15,
- wherein the at least one thermal energy store includes a cold store and the at least one energy conversion device includes a refrigerating machine, and
- wherein the system discharges the cold store via a district cooling grid.
A method for adjustable provision of power by a power plant, comprising:
- charging at least one thermal store thermally coupled to a condenser of the power plant by an energy conversion device during a period of excess power supply;
- and
- reducing power supply to a power grid by the power plant by said charging of the at least one thermal store to a power demand applied during a first period of time, so that provision of power to the power grid from renewable sources of energy is prioritized.
Dependencies are inferred from the claim text.