Control Scheme of Fault Current Limiter by Series-Connected Voltage Sag Compensator
Control Scheme of Fault Current Limiter by Series-Connected Voltage Sag Compensator
复制标题
串联电压暂降补偿器故障限流器控制方案
DOI：
10.1541/ieejias.124.373
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发表时间：
2004
影响因子：
--
通讯作者：
M. Yamada
中科院分区：
文献类型：
--
作者：
S. Polmai;T. Ise;M. Yamada
介绍了一种采用串联注入电压的故障限流器控制方案。本研究提出的限流器是基于作者之前研究的基于smes串联电压暂降补偿器来控制负载侧短路引起的故障电流。提出了一种快速判别电力系统电压暂降与负荷侧短路的算法，使设备能够正确地进行电压暂降补偿或故障限流。在此基础上，提出了一种基于串联补偿器输出电压相位控制的限流控制策略，具有良好的波形特性和较低的有功功率吸收。实验结果证明了该策略的有效性。
This paper describes a control scheme of fault current limiter by series voltage injection. The current limiter proposed in this study is based on the use of a SMES-based series-connected voltage sag compensator, which has been previously studied by the authors, for controlling fault current caused by short circuit on the load side. An algorithm for fast discriminating between power system voltage sag and load-side short circuit is proposed for the equipment to correctly function either for voltage sag compensation or fault current limiting purpose. Furthermore, a new control strategy based on output voltage phase control of the series compensator is proposed for current limiting with good waveform characteristics and low active power absorption. Experimental results demonstrated the validation of the proposed strategy.