双电源备用供电型通用潮流控制器

传统的UPFC中的潮流控制和有功功率补偿只是在同一线路上的电源和负载之间进行,因而其潮流控制能力和有功功率补偿的额度有限,不能实现不间断供电。为解决这一缺陷,提出了一种双电源备用供电型通用潮流控制器,该系统由4个共用一条直流母线的变换器构成。在介绍了其数学模型并分析了其主要功能后,详细讨论了其控制策略。MATLAB/SIMULINK环境下仿真研究的结果表明:双电源备用供电型通用潮流控制器能有效提高电力系统的供电可靠性,可实现不间断供电,且能够实现有功功率在不同电源和负载之间的相互补偿。

Dual-power-supply Backup Supply Type Generalized Power Flow Controller

A dual-power-supply backup supply type generalized power flow controller(DPS-GPFC) is proposed in this paper.The proposed system consists of two shunt converters and two series converters,and the four converters work together by using a shared DC bus.Its mathematical model is developed, and its main functions are analyzed.A simple decoupling control strategy is also discussed in detail.The proposed control scheme is as follows,the series converters operate as a voltage source to regulate active and reactive power of the transmission line.The shunt converters operate as a current source to regulate the bus voltage and DC capacitor voltage at the desired level.The proposed system can improve power system reliability effectively,and provide uninterrupted power supply,also the desired active power compensation can be realized among the different power supplies and loads.The operation of the proposed system was verified through simulations based on the proposed simple control scheme.The simulation results based on MATLAB/SIMULINK are presented to verify the good performance of the proposed system and the feasibility of the proposed control scheme.