±800 kV扎鲁特换流站无功控制策略及其定值优化

Reactive Power Control Strategy and Constant Value Optimization of ±800 kV Zalut Converter Station

介绍了±800 kV扎鲁特一青州特高压直流工程中送端扎鲁特换流站无功控制的配置策略,并针对无功控制功率回降逻辑存在的不匹配问题进行分析,指出了死区定值设置不合理是导致功率不稳定的主要原因,提出调整无功控制死区定值来确保特殊运行方式下无功控制功能稳定可靠的建议,为特高压直流工程的无功控制策略设计及现场运维提供借鉴。

This paper introduces the configuration strategy of reactive power control of Zalut converter station in ±800 kV UHVDC project from Zalut to Qingzhou,analyzes the mismatch problem of reactive control power fallback logic,and points out that the unreasonable setting of dead zone is the main cause of power instability.It is suggested to adjust the value of reactive power control dead zone to ensure the stable and reliable reactive power control function under special operation mode,which can provide reference for the reactive power control strategy design and field operation and maintenance of UHVDC projects.