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移相器是调节线路功率的有效手段,对于提高设备利用率、平衡潮流等具有重要意义。以晶闸管控制的双芯对称型移相器为对象,在实时数字仿真器(RTDS)中建立了一次设备的仿真模型,并开发了控制装置进行系统仿真研究。针对阀组触发脉冲对系统运行的影响,提出了触发脉冲控制策略,固定挡位时提前触发角触发,挡位调节过程中监测阀组电流过零关断后触发,并提出了一种阀组电流过零的检测方法。仿真结果表明,提出的控制策略在固定挡位时,系统运行稳定无谐波,挡位调节过程中系统无冲击电流、过渡平滑。
Phase shifter is an effective means of regulating line power, for improving equipment utilization, balance the trend and so important. A thyristor-controlled dual-core symmetric phase shifter was developed for the first time in a real-time digital simulator (RTDS), and a control device was developed to simulate the system. Aiming at the influence of valve triggering pulse on system operation, a control strategy of triggering pulse is proposed, which triggers triggering in advance when fixed gear is applied. Current zero-crossing detection method. The simulation results show that the proposed control strategy in the fixed gear, the system stable and no harmonics, the system during the adjustment process no impact current, smooth transition.