酒泉750 kV超高压换流站关键设备试验技术研究  

Research on Key Equipment Testing Technology of 750 kV EHV Converter Station in Jiuquan

作　　者：陈仕彬 王晓飞 吕斌 杨玉庭 史万伟 CHEN Shi-bin;WANG Xiao-fei;LYU Bin;YANG Yu-ting;SHI Wan-wei(Electric Power Research Institute,State Grid Gansu Electric Power Company,Lanzhou 730050,China;Lanzhou Longneng Electric Power Science&Technology Ltd,Lanzhou 730050,China)

机构地区：[1]国网甘肃省电力公司电力科学研究院,甘肃兰州730050 [2]兰州陇能电力科技有限公司,甘肃兰州730050

出　　处：《电工电气》2019年第11期53-56,共4页Electrotechnics Electric

摘　　要：针对于750 kV超高压(EHV)换流站关键设备的安装可靠性和稳定运行情况,提出一种能够实现750 kV电压等级EHV换流站关键设备性能测试的方法,该方法综合考虑试验效率和成本经济性,综合选取了试验电源的最佳接入点并设计了对应的接线方式,并以此为基础构建了换流站关键设备通流时的短路电流计算模型,根据计算结果对换流站关键设备通流所需的试验电源和试验用表进行了优化选择,以EHV换流站调相机系统和电流互感器(CT)为研究对象,对其保护配置稳定运行情况、极性正误、变比结果及相位偏置情况进行了分析,通过对酒泉750 kV换流站的调相机系统和CT进行通流试验,实验结果表明,提出的方法经过一次通流即可使短路电流通过调相机系统母线、短引线、主变压器及调相机CT,首次实现了国内750 kV电压等级EHV换流站调相机系统等关键设备的顺利调试。Aiming at the installing reliability and stability situation of key equipments in 750 kV EHV converter station,this paper proposed a kind of method to realize the key equipments performance test in EHV converter station of 750 kV voltage classes.This method comprehensively considered the test efficiency and economy of the test,selected the optimum access point of experimental power supply and designed the corresponding wiring mode.On the basis of this,this paper established the short circuit calculation model when there were currents passing through in the key equipment of EHV converter station.According to the calculation result,this paper carried out the optimization selection for the testing power supply and forms needed when there were currents passing through in the key equipment of EHV converter station.Taking the synchronous condenser system of EHV converter station and CT as the research object,this paper analyzed its protection configuration stable operation situation,polarity true-false,turns ratio result and phase bias situation.The synchronous condenser system in 750 kV EHV converter station of Jiuquan and the CT were carried out currents passing through tests.The experimental results show that one time currents passing through can make the short circuit get through the synchronous condenser system busbar,the short leg,the main transformer and the synchronous condenser CT.It is the first time that the synchronous condenser systems in EHV converter station of 750 kV voltage classes at home etc key equipments have been debugged smoothly.

关 键 词：酒泉换流站 调相机系统 短路电流 通流试验 

分 类 号：TM835[电气工程—高电压与绝缘技术]