Multi-charge-discharge-rate energy storage gas turbine black-start system and method

Abstract

The invention discloses a multi-charge-discharge-rate energy storage gas turbine black-start system and method. The system comprises a battery energy storage system, a black-start system body, a black-start load and a bus, wherein the black-start system comprises an exciter, a load commutation inverter, a rotor, a stator and a generator shell, the rotor, the stator and the generator shell are sequentially arranged from inside to outside, the exciter is connected with the rotor, the load commutation inverter is connected with the stator, the black-start load, the load commutation inverter and the exciter are connected with the bus, the system and the method can realize black start of a gas turbine.

Description

technical field [0001] The invention belongs to the technical field of energy storage and gas turbine black start, and relates to a gas turbine black start system and method for multi-charge and discharge rate energy storage. Background technique [0002] With the vigorous development of new energy power generation, the proportion of its installed capacity in the power system will gradually increase. Due to the unpredictability and volatility of new energy power generation, a high proportion of new energy installed capacity will have an impact on the operation of the entire power system. It affects the balance between the source, the grid, and the load, and affects the power flow of the power grid. In severe cases, it threatens the overall safe and stable operation of the power grid. If abnormal weather occurs, it may cause large-scale power outages. The large-scale power outage that occurred in the UK in August 2019 was precisely due to the outage of the gas-fired power sta...

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Problems solved by technology

[0002] With the vigorous development of new energy power generation, the proportion of its installed capacity in the power system will gradually increase. Due to the unpredictability and volatility of new energy power generation, a high proportion of new energy installed capacity will have an impact on the operation of the entire power system. Affect the balance between the source, the grid and the load, affect the power flow, and seriously threaten the overall safety and stability of the power grid. If there is abnormal weather, it may cause large-scale power outages

The large-scale power outage that occurred in the UK in August 2019 was precisely due to the outage of the gas-fired power station in Bedfordshire, and the loss of part of the load of the Hornsea offshore wind power plant due to the insufficient low-voltage ride-through capability of the wind turbines. The surrounding power supply that can be black-started failed to start immediately, resulting in a long-term disconnection in London and its surrounding areas

Chinese patent CN111130102A proposes a power grid black start method and system based on an energy storage system, and provides that the energy storage system participates in the black start working process, but the system does not involve the detailed process of the gas turbine black start, nor does it follow the power requirements of different black start processes Structural optimization of energy storage system

Chinese patent CN111478367A proposes a power plant energy storage black start system and control method, and provides a system structure for the energy storage system to provide black start power from the power plant's high-factory wiring, but the system does not involve the detailed process of the gas turbine black start, nor does it follow Structural optimization of energy storage system based on power demand of different processes in black start

Chinese patent CN111614084A proposes a multi-energy storage support black start coordinated control method based on dynamic power distribution, which incorporates high-voltage buses of wind power, energy storage and thermal power plants into the grid connection point, and adopts corresponding control methods for different working modes. Similarly, the system It does not involve the detailed process of gas turbine black start, nor does it optimize the structure of the energy storage system according to the power demand of different black start processes

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