Method for capacity optimization of each unit of wind-hydrogen coupled power generation system

Abstract

The invention discloses a method for optimizing the capacity of each unit of a wind-hydrogen coupled power generation system. Aiming at maximizing the social benefits of the wind-hydrogen coupled power generation system and maximizing the qualified rate of wind power output power stabilization, the capacity optimization of each unit of the wind-hydrogen coupled power generation system is established The model is used to solve the external transmission capacity, electrolyzer power, compressor power, hydrogen storage equipment capacity and fuel cell power of the wind-hydrogen coupled power generation system. The invention can effectively stabilize the fluctuation of the output of the wind farm, promote the friendly grid connection of wind power, and jointly optimize at the same time, which is beneficial to the improvement of the social benefit of the whole project, and can globally optimize the capacity configuration of each unit.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a method for optimizing the capacity of each unit of a wind-hydrogen coupling power generation system. Background technique [0002] The intermittent nature of wind power leads to large fluctuations in the output power of wind farms, which will affect the power quality of the grid (such as voltage fluctuations, flicker, frequency instability, etc.), peak shaving and reserve capacity, and reduce the enforceability of dispatching plans, making the grid unable to The output power of the wind farm is accepted, resulting in a large amount of wind curtailment. In order to stabilize wind power fluctuations and reduce the probability of wind abandonment, some wind farms have adopted methods such as "wind-fire bundling", "wind-storage joint delivery", and "wind-hydrogen coupled power generation". At present, the research on the operation of "wind-hydrogen coupled power generation" ...

AI Technical Summary

Problems solved by technology

As we all know, wind farms are generally far away from the load center, and need to build supporting long-distance power transmission projects to transmit electric energy to the load center for consumption. If the capacity configuration of the hydrogen system and fuel system is only considered, it is difficult to achieve effective power transmission capacity planning. Either too large will reduce the economy of the coupling system, or too small will cause severe wind curtailment

Because no matter from the perspective of economics or wind power stabilization, the wind-hydrogen coupled power generation system's external transmission capacity, hydrogen production system and fuel cell capacity planning are an organic whole, and separate planning is not conducive to the coordination of each unit of the wind-hydrogen system. It is difficult to give full play to the advantages of each "member" in the system, which is not conducive to the optimal allocation of resources

[0003] The existing wind-hydrogen coupling system has not jointly optimized its external transmission capacity, hydrogen system and fuel cell power configuration, making it difficult for an organic whole renewable energy utilization project to achieve the optimization of social benefits, and it is also not conducive to the friendly integration of wind power. network

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