Due to the significant instability of wind energy,the capacity of generating units cannot be reliably controlled,resulting in excessive power loss.Therefore,taking energy dissipation into account,a capacity expansion method for grid-connected distributed wind power generation is proposed in this paper.According to the power and capacity limits of the power generation energy device,the working state of the wind farm in the grid-connected dispatching is analyzed,and the energy dissipation calculation model is constructed.According to the energy dissipation model,we established the constraint conditions for the safe operation of the power generation system,fully dispatched power energy of the grid-connected power grid,and controlled the dispatching space of the power grid to the minimum to complete the expansion of the power grid capacity.The experimental results show that the range of wind matching capacity can be calculated under the constraints of minimum dissipation power and voltage qualified power threshold,providing more energy storage space for wind power generation,and the voltage qualified rate is close to 100%.All these show that the proposed method can effectively control the voltage change,and has little energy dissipation,so it is effective and feasible.
关键词
能量耗散/分布式风力发电/并网电网/容量扩充/电功率
Key words
energy dissipation/distributed wind power generation/grid-connected power grid/capacity expansion/electrical power
维普
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