500kV五邑變電站電容隔直裝置的應(yīng)用分析
李艷嬌
廣東電網(wǎng)公司江門供電局，廣東 江門 529000
摘要：以500kV五邑變電站為例，從電容隔直裝置的構(gòu)成、基本原理及控制模式等方面，分析了該裝置的應(yīng)用功能及運(yùn)行注意事項(xiàng)，實(shí)際應(yīng)用表明，通過在該變電站#2主變壓器中性點(diǎn)回路串接電容隔直裝置后，隔絕了大地系統(tǒng)中直流電流分量對(duì)主變壓器的影響，減少了損耗，確保了主變壓器的運(yùn)行。
關(guān)鍵詞：變壓器；中性點(diǎn)；直流電流；電容隔直裝置
中圖分類號(hào)：TM403.5 文獻(xiàn)標(biāo)識(shí)碼：B 文章編號(hào)：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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