基于可控自恢复消能装置的直流送端暂态过电压抑制方法  

Suppression Method for Transient Overvoltage at DC Sending End Based on Controllable Self-recoveryEnergy Consumption Device

作　　者：刘杉 谭开东 姜喆 宋胜利 杨鹏程 申笑林 黄永瑞 LIU Shan;TAN Kaidong;JIANG Zhe;SONG Shengli;YANG Pengcheng;SHEN Xiaolin;HUANG Yongrui(State Key Laboratory of Advanced Power Transmission Technology(State Grid Smart Grid Research Institute),Beijing 102209,China;State Grid Corporation of China,Beijing 100031,China;State Grid Economic and Technological Research Institute Co.,Ltd.,Beijing 102209,China;XJ Group Co.,Ltd.,Xuchang 461000,China)

机构地区：[1]先进输电技术国家重点实验室(国网智能电网研究院有限公司),北京市102209 [2]国家电网有限公司,北京市100031 [3]国网经济技术研究院有限公司,北京市102209 [4]许继集团有限公司,河南省许昌市461000

出　　处：《电力系统自动化》2024年第9期142-150,共9页Automation of Electric Power Systems

基　　金：国家电网有限公司科技项目(5500-202158108A-0-0-00)。

摘　　要：常规特高压直流输电系统受端换相失败或直流闭锁时输送功率受限,将导致送端换流站的无功消纳盈余进而诱发送端系统过电压。提出基于可控自恢复消能装置的过电压抑制方法,能够防止常规特高压直流输电系统送端电压上升过大。首先,分析了送端过电压产生机理;其次,介绍了可控自恢复消能装置的过电压抑制原理,并给出了装置参数整定方法;最后,结合PSCAD/EMTDC和试验平台验证了可控自恢复消能装置实现常规特高压直流输电系统暂态过电压抑制的有效性。The transmission power of a conventional ultra high voltage direct current(UHVDC)transmission system is limited when the receiving-end commutation fails or DC blocks,which will lead to the reactive power surplus of the converter station at the sending end and induce the overvoltage of the sending-end system.An overvoltage suppression method based on the controllable self-recovery energy consumption device is proposed,which can prevent the voltage rise of the conventional UHVDC transmission system from being too high.Firstly,the mechanism of the overvoltage at the sending end is analyzed.Secondly,the overvoltage suppression principle of the controllable self-recovery energy consumption device is introduced,and the device parameter setting method is given.Finally,the effectiveness of the controllable self-recovery energy consumption device for realizing the transient overvoltage suppression of the conventional UHVDC transmission system is verified by PSCAD/EMTDC and the test platform.

关 键 词：可控自恢复消能装置 特高压直流 换相失败 过电压抑制 

分 类 号：TM721.1[电气工程—电力系统及自动化]