±1 100 kV准东换流站交流侧线路感应电压和电流研究
娄颖，何慧雯，李振强，查志鹏
（中国电力科学研究院，湖北 武汉 430074）
摘 要：±1 100 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。
关键词：换流站；750 kV 交流侧；静电感应；电磁感应；接地开关
中图分类号：TM721.1 文献标识码：A 文章编号：1007-3175(2018)02-0033-05
Research on Line Induction Voltage and Current at Alternating Current Side for ±1 100 kV Zhundong Convertor Station
LOU Ying, HE Hui-wen, LI Zhen-qiang, ZHA Zhi-peng
（China Electric Power Research Institute, Wuhan 430074, China）
Abstract: The distance between the 7 power plants is short at 750 kV alternating current (AC) side of ±1 100 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 influences the typological selection of earthing switchers. The ATP-EMTP simulation program was adopted to build the system model at 750 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 750 kV AC side and the capability of opening and closing induced voltage and current to provide references for the practical engineering application.
Key words: converter station; 750 kV alternating current side; electrostatic induction; electromagnetic induction; earthing switch
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