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发明公开
CN110504704A 一种用于海上风电并网的双极MMC换流站控制系统及其控制方法 审中-实审

一种用于海上风电并网的双极MMC换流站控制系统及其控制方法
摘要：
本发明提供一种用于海上风电并网的双极MMC换流站控制系统及其控制方法，包括与陆上交流系统相连的陆上双极MMC换流站和与海上风电场相连的海上双极MMC换流站，陆上双极MMC换流站与海上双极MMC换流站相连；陆上双极MMC换流站包括正、负极MMC换流器，分别与陆上交流系统相连，均采用定直流电压和定无功功率控制；海上双极MMC换流站包括正、负极MMC换流器，分别与海上风电场相连，采用具有功率均衡能力的主从控制策略。本发明的优点为：能够为海上风电场提供稳定的同步交流电源并避免正、负两极MMC换流器之间的互相影响。
摘要（英）：

The invention provides a bipolar MMC convertor station control system for an offshore wind power grid and a control method of the bipolar MMC convertor station control system. The system comprises anonshore bipolar MMC convertor station connected to an onshore alternating current system and an offshore bipolar MMC convertor station connected to an offshore wind plant, wherein the onshore bipolarMMC convertor station is connected to the offshore bipolar MMC convertor station; the onshore bipolar MMC converter station comprises positive and negative MMC converters which are respectively connected to the onshore alternating current system and are controlled by constant direct current voltage and constant reactive power; and the offshore bipolar MMC converter station comprises positive and negative MMC converters which are respectively connected to the offshore wind plant, and adopts a master-slave control strategy with power balancing capacity. The system and the method have the advantages that a stable synchronous alternating current power supply can be provided for the offshore wind plant, and the mutual influence between the positive and negative bipolar MMC converters is avoided.

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