±1100kV准东换流站交流侧线路感应电压和电流研究  

Research on Line Induction Voltage and Current at Alternating Current Side for ±1100 kV Zhundong Convertor Station

作　　者：娄颖[1] 何慧雯[1] 李振强[1] 查志鹏[1] 

机构地区：[1]中国电力科学研究院,湖北武汉430074

出　　处：《电工电气》2018年第2期33-37,49,共6页Electrotechnics Electric

基　　金：国家电网公司科技项目(SGZB0000JSJS1700346)

摘　　要：±1100 kV准东换流站750 kV交流侧由于7个电厂相距较近且线路均处于同一走廊架设,回路间的静电感应和电磁感应增强,当同廊道架设的线路中某一回线停电检修,该线路的感应电压和电流较大,影响了线路接地开关类型的选择。采用ATP-EMTP仿真程序建立了准东换流站750 kV交流侧系统模型,研究了导线相序不同排列方式、导线相间距离、导线和地线对地高度及线路输送潮流对线路感应电压和感应电流值的影响,提出了准东侧750 kV交流线路的接地开关选型和开合感应电压电流的能力,为实际工程应用提供参考。The distance between the 7 power plants is short at 70 kV alternating current （AC） side of ±00 kV Zhundong convertor station and multi-transmission lines set in one gallery, the situation makes the electrostatic and electromagnetic induction coupling stronger. When one of the circuit lines stops working, the induced current and voltage from other working lines is large, which infuences the typological selection of earth-ing switchers. The ATP-EMTP simulation program was adopted to build the system model at 70 kV AC side of Zhundong convertor station. The induced voltage and current were calculated under different transmission lines working conditions, such as line sequence, increasing the distance between the conductors, increasing the height of tower and transmission lines tide. This paper proposed the earthing switchers selection at 70 kV AC side and the capability of opening and closing induced voltage and current to provide references for the practical engineering application.

关 键 词：换流站 750kV交流侧 静电感应 电磁感应 接地开关 

分 类 号：TM721.1[电气工程—电力系统及自动化]