±1 100 kV準(zhǔn)東換流站交流側(cè)線路感應(yīng)電壓和電流研究
婁穎，何慧雯，李振強(qiáng)，查志鵬
（中國(guó)電力科學(xué)研究院，湖北 武漢 430074）
摘 要：±1 100 kV準(zhǔn)東換流站750 kV交流側(cè)由于7個(gè)電廠相距較近且線路均處于同一走廊架設(shè)，回路間的靜電感應(yīng)和電磁感應(yīng)增強(qiáng)，當(dāng)同廊道架設(shè)的線路中某一回線停電檢修，該線路的感應(yīng)電壓和電流較大，影響了線路接地開(kāi)關(guān)類型的選擇。采用ATP-EMTP仿真程序建立了準(zhǔn)東換流站750 kV交流側(cè)系統(tǒng)模型，研究了導(dǎo)線相序不同排列方式、導(dǎo)線相間距離、導(dǎo)線和地線對(duì)地高度及線路輸送潮流對(duì)線路感應(yīng)電壓和感應(yīng)電流值的影響，提出了準(zhǔn)東側(cè)750 kV交流線路的接地開(kāi)關(guān)選型和開(kāi)合感應(yīng)電壓電流的能力，為實(shí)際工程應(yīng)用提供參考。
關(guān)鍵詞：換流站；750 kV 交流側(cè)；靜電感應(yīng)；電磁感應(yīng)；接地開(kāi)關(guān)
中圖分類號(hào)：TM721.1 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：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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