System and method for carrying out thermal power plant peak shaving by electrolyzing hydrogen and hydrogen mixed fuel

Abstract

The invention relates to a system and a method for carrying out thermal power plant peak shaving by electrolyzing hydrogen and hydrogen mixed fuel. The system comprises a thermal power generation system, a water electrolysis hydrogen production system, a gas turbine system and a control system, wherein the thermal power generation system is connected with the water electrolysis hydrogen productionsystem through a plant electricity utilization system, and is used for supplying power for the water electrolysis hydrogen production system through the plant electricity utilization system so as toprepare hydrogen; and the hydrogen produced by the water electrolysis hydrogen production system and the natural gas of the gas turbine system are pre-mixed in a mixing chamber; and the control systemis connected with the thermal power generation system and the water electrolysis hydrogen production system and is used for acquiring an AGC load instruction of a power grid in real time, the outputof the water electrolysis hydrogen production system is adjusted according to the operation load of a thermal power generation unit, so that the thermal power generation unit can keep stable load operation for a long time. According to the system and the method, the heat efficiency of the gas turbine can be improved, the use amount of the natural gas can be reduced, and the purposes of low carbonand environmental protection are achieved.

Description

technical field [0001] The invention belongs to the technical field of thermal power generation, and in particular relates to a system and method for peak regulation in a thermal power plant by utilizing electrolytic hydrogen production and hydrogen mixed fuel. Background technique [0002] In recent years, under the requirements of green and low-carbon development, my country's renewable energy (wind power, photovoltaic, nuclear power, etc.) power generation installed capacity has increased significantly, and will occupy an increasing proportion in the future power structure. The randomness and volatility of wind power and photovoltaic power generation are relatively large, and the impact of power generation on the grid is relatively large. This requires stable thermal power units to perform peak regulation and frequency regulation. However, thermal power units follow the AGC (Automatic Generation Control, automatic generation control, automatic generation control, automati...

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Problems solved by technology

However, this method has the following technical defects: if the output configuration of the electrolytic hydrogen production device is too small, the effect of peak regulation and frequency modulation will be limited; if the output configuration is large, there will be problems of inconvenient storage and utilization of the prepared hydrogen

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