500kV五邑变电站电容隔直装置的应用分析
李艳娇
广东电网公司江门供电局,广东 江门 529000
摘要:以500kV五邑变电站为例,从电容隔直装置的构成、基本原理及控制模式等方面,分析了该装置的应用功能及运行注意事项,实际应用表明,通过在该变电站#2主变压器中性点回路串接电容隔直装置后,隔绝了大地系统中直流电流分量对主变压器的影响,减少了损耗,确保了主变压器的运行。
关键词:变压器;中性点;直流电流;电容隔直装置
中图分类号:TM403.5 文献标识码:B 文章编号:1007-3175(2013)07-0030-04
Application Analysis of Capacitive DC Blocking Device in 500kV Wuyi Substation
LI Yan-jiao
Jiangmen Power Supply Bureau of Guangdong Power Grid Corporation, Jiangmen 529000, China
Abstract: Taking 500kV Wuyi substation as an example, this paper analyzed application functions and cautions for operation of the device from the configuration of capacitive DC blocking device, basic principle and control mode etc aspects. The actual application indicates that the method that the neutral point circuit of main transformer No.2 was connected in series to the capacitive DC blocking device eliminates the impact of DC current component in earth system on the main transformer, which reduces losses, assuring operation of the main transformer.
Key words: transformer; neutral point; DC current; capacitive DC blocking device
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