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发明公开
CN110829448A 面向交直流混合配电网的分布式电压互动支撑控制方法及系统 审中-实审

面向交直流混合配电网的分布式电压互动支撑控制方法及系统
摘要：
本发明涉及一种面向交直流混合配电网的分布式电压互动支撑控制方法及系统，方法包括一次控制和二次控制构成的双层控制结构，其中：一次控制采用下垂控制，使无功电压下垂控制自适应配电网负荷变化；二次控制采用分布式一致性控制，使配电网出现扰动时调节各分布式电源分配无功，恢复电压。本发明建立了双层控制结构，一次控制下垂控制实现交直流混合配电网的稳定，二次控制分布式一致性，实现交直流功率互动支撑，在恢复系统电压的同时，提高了下垂控制的无功功率均分精度，从而抑制系统无功环流，提高系统运行稳定性。
摘要（英）：

The invention relates to a distributed voltage interactive support control method and system for an AC/DC hybrid power distribution network. The method comprises a double-layer control structure formed by primary control and secondary control. Droop control is adopted for primary control, so that reactive voltage droop control adapts to the load change of the power distribution network. Distributed consistency control is adopted for secondary control, so that each distributed power supply is adjusted to distribute reactive power and recover voltage when disturbance occurs in the power distribution network. According to the invention, a double-layer control structure is established, the stability of the AC/DC hybrid power distribution network is realized through primary droop control, and AC/DC power interactive support is realized through secondary distributed consistency control. The reactive power equalization precision of droop control is improved while the system voltage is recovered. Therefore, the reactive circulating current of the system is inhibited, and the operation stability of the system is improved.

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