复合型直流潮流控制器构建与实现

Construction and Implementation of Composite DC Power Flow Controller

在多端直流输电系统中引入直流潮流控制器可有效增加直流潮流的控制维度,提高主动潮流分配与协调控制能力。该文构建了一种适用于多端直流输电系统的复合型直流潮流控制器框架结构,并给出一种复合型直流潮流控制器的具体拓扑实现方案,可主动控制2条输电线路的潮流。围绕工作原理和控制策略,本文对该拓扑进行详细理论分析,并同时开展仿真与实验验证,仿真和实验结果均证明该潮流控制器可实现多种工况下对2条线路主动潮流控制,具有良好的应用前景。

The utilization of DC power-flow controller in multi-terminal HVDC(MTDC)can increase the control dimension of DC current,which will improve both the active power distribution capability and coordination control performance of MTDC.The general conceptual frame of composite DC power-flow controller(CDCPFC)had been constructed in this paper,as well as a detailed topology implementation.The operation principle,circuit characteristic and control strategy of the proposed CDCPFC were analyzed in detail.Both simulation and experimental results proved that the proposed topology can realize power flow control of two individual lines under various conditions with good application prospect.