特高压直流输电工程单极保护降压试验研究  

Study on Monopole Protective Reduce Voltage Test of ±800 kV UHVDC Transmission Project

作　　者：杨万开[1] 印永华[1] 曾南超[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192

出　　处：《中国电机工程学报》2014年第4期659-665,共7页Proceedings of the CSEE

摘　　要：在向家坝至上海(简称向上)工程系统调试期间,针对送端(复龙站)系统较弱的情况,对送端系统电压控制进行研究,对单极大负荷运行可能发生的事故及防止对策提出预案。对单极额定负荷运行保护降压试验过程中直流电压、电流和触发角等参量地变化过程进行分析,剖析试验过程中直流控制的调节特性,对交/直流过电压进行分析,提出送端(向家坝侧)无功功率和电压控制参数,并进行临时整定,以确保单极大负荷运行期间送端系统电压的稳定和单极额定负荷70%降压运行试验的成功。通过实测的直流参数,对换流站无功功率和母线电压的计算分析,验证了试验前系统计算结果的正确性,并对送端电压稳定行进行分析,指出整流侧直流电压和电流剧烈波动不会危及系统的安全稳定运行。The AC system voltage control strategy was researched based on Xiangjiaba to Shanghai （abbr. XS） ultra high-voltage direct current （UHVDC） rectifier side （Fulong station） weak system during XS UHVDC project system commissioning test, and the countermeasure method prevented to fault for monopole rated power operation test was proposed. The variety procedure of DC voltage, DC current and firing angle and so on were analyzed, the UHVDC control system characteristics, AC side and DC side over voltage were analyzed during monopole rated power protective reduced voltage test. The reactive power and voltage control parameters were proposed and carried out to set temporarily at Fulong station, in order to guarantee AC bus voltage stability and reduced voltage 70%test success during monopole rated power operation test. The validity of system calculation analysis results was verified before XS UHVDC system test by rectifier station reactive power and voltage calculation analysis based on DC parameters measured in the test. The DC voltage and current intense variety in rectifier could not infect the system safety and stability operation by analyzing system voltage stability.

关 键 词：特高压直流输电工程 单极额定功率运行 保护降压试验 无功功率和电压控制 

分 类 号：TM72[电气工程—电力系统及自动化]