基于新型磁控电抗器的直流系统暂态压升抑制方法  

Suppression Metlad of New Magnetic Controlled Reactor to Transient Voltage Rise of DC System

作　　者：窦宇宇 齐四清 郑博文 印希宇 龚庆武[2] 陈小月 DOU Yuyu;QI Siqing;ZHENG Bowen;YIN Xiyu;GONG Qingwu;CHEN Xiaoyue(State Grid Inner Mongolia Eastern Electric Power Co.,Ltd.,Electric Power Research Institute,Hohhot 010000,China;School of Electrical and Automation,Wuhan University,Wuhan 430072,China)

机构地区：[1]国网内蒙古东部电力有限公司电力科学研究院,呼和浩特010000 [2]武汉大学电气与自动化学院,武汉430072

出　　处：《电瓷避雷器》2023年第6期55-65,共11页Insulators and Surge Arresters

基　　金：国网内蒙古东部电力有限公司电力科学研究院科技项目(编号:SGMDDK00DJJS2100137)。

摘　　要：随着我国直流输电技术快速发展,多项直流输电工程投入运行,形成了“强直弱交”的电网特征。直流输电线路双极闭锁会造成送端系统换流站母线电压升高,而电压上升幅度与直流输送容量相关,因此送端系统暂态电压升高导致实际直流输送容量小于额定值。本研究提出了一种基于新型磁控电抗器的送端系统暂态电压升高抑制方法,并以鲁固直流为试验对象开展仿真试验,仿真结果表明,未接入新型磁控电抗器时,最大直流输送容量为7 500 MW,接入合适容量新型磁控电抗器后,最大直流输送容量提升至额定容量10 000 MW。With the rapid development of DC transmission technology in China,a number of DC transmission projects have been put into operation,forming a "strong DC weak AC" grid feature.The bipolar blocking of DC transmission line will cause the bus voltage of converter station in the sending end system to rise,and the magnitude of the voltage rise is related to the DC transmission capacity.Therefore,the transient voltage rise of the sending end system will cause the actual DC transmission capacity to be less than the rated value.The auhtor proposes a method to suppress the transient voltage rise of the sending end system based on a new type of magnetic controlled reactor,and conducts simulation tests with Lugu DC as the test object.The simulation results show that the maximum DC transmission capacity is 7500 MW when the new type of magnetic control reactor is not connected.After the new type of magnetic controlled reactor with appropriate capacity is connected,the maximum DC transmission capacity is increased to the rated capacity of 10 000 MW.

关 键 词：磁控电抗器 直流闭锁 过电压 无功补偿 暂态电压 

分 类 号：TM721.1[电气工程—电力系统及自动化]