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从UPFC控制潮流的基本原理出发 ,详细地讨论了它对线路潮流的调节情况 ,建立了利用UPFC控制潮流的 3种优化模型 ,并针对UPFC对潮流的控制受功角变化的影响较大的特点 ,提出了一种有效的分段潮流控制策略 :根据暂态过程的不同阶段 ,相应地改变UPFC的控制方式 ,从而可大幅度地改善系统的暂态稳定性。单机无穷大系统的暂态仿真结果表明 :分段潮流控制策略是有效的。
Based on the basic principle of UPFC controlling the tidal current, this paper discussed the regulation of tidal current in detail, and established three optimization models to control the tidal current by UPFC. According to the characteristics of UPFC, the control of tidal current is greatly influenced by the change of power angle , An effective sub-stage power flow control strategy is proposed. According to the different stages of the transient process, the control mode of UPFC is changed accordingly, which can greatly improve the transient stability of the system. The transient simulation results of a single machine infinite system show that the sectional power flow control strategy is effective.