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无隔离环节三相UPQC的故障限流保护的仿真研究 被引量:3

Protection simulation study of over current for a three-phase unified power quality controller without isolating circuit
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摘要 用户与供电公司都对电能质量水平提出了较高的要求。统一电能质量控制器(UPQC)正是由于兼有电压补偿和电流补偿的功能,越来越受到人们的重视。而无隔离环节的三相统一电能质量控制器,由于无需变压器等隔离环节,因而环节少、成本低,且克服了隔离变压器带来的一系列问题。在以前研究成果的基础上,针对负载侧短路时引起的过流问题,进行了研究,提出了相应的控制策略,从而限制了故障电流。最后通过PSCAD/EMTDC软件进行了仿真研究并取得仿真结果。 Both of the power grid and the electrical consumer need high quality of power supply. The united power quality conditioner (UPQC) is an idea for the above purpose. The three-phase UPQC without isolating circuit has advantages in no isolating transformers. Based on the precious studies, current limiting control strategy is proposed to limit fault current when faults happen at the load side. Simulation studies under PSCAD/EMTDC are given to verify the validity of the proposed control strategies.
出处 《电力系统保护与控制》 EI CSCD 北大核心 2008年第15期14-17,共4页 Power System Protection and Control
基金 北京市自然科学基金资助项目(3073021)~~
关键词 无隔离环节 三相统一电能质量控制器 故障限流 no isolating circuit 3-phase unified power quality conditioner (UPQC) fault current limited
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