10 kV配電線路防雷仿真分析
李傲岸1,劉崇新1,王安迪1,王李娟1,2,張錫泉2
1 西安交通大學(xué) 電氣工程學(xué)院,陜西 西安 710049;2 陜西省地方電力(集團)有限公司,陜西 西安 710061
摘 要:基于10 kV配電線路,分析了直擊雷和感應(yīng)雷過電壓線路的耐雷水平,通過ATP-EMTP仿真軟件分別建立了直擊雷和感應(yīng)雷過電壓的仿真模型。仿真結(jié)果表明加強絕緣強度、架設(shè)避雷線、安裝避雷器、降低接地電阻等防雷措施能有效提高配電線路的耐雷水平,降低雷擊跳閘概率,提高供電可靠性。
關(guān)鍵詞:配電線路;耐雷水平;ATP-EMTP仿真軟件;防雷措施
中圖分類號:TM726;TM863 文獻標識碼:A 文章編號:1007-3175(2015)08-0013-05
Lightning Protection Simulation Analysis of 10 kV Distribution Line
LI Ao-an1, LIU Chong-xin1, WANG An-di1, WANG Li-juan1,2, ZHANG Xi-quan2
1 School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China;2 Shanxi Regional Electric Power Group Co., Ltd, Xi’an 710061, China
Abstract: Taking 10kV distribution line into consideration, this paper calculated the lightning withstand level of direct lightning overvoltage and induced overvoltage by theoretical analysis, and established the simulation models of direct lightning overvoltage and induced overvoltage by ATP-EMTP to verify the theoretical value. The simulation results indicated that lightning protection measures such as reinforcing insulation strength, installing ground wire and lightning arresters and reducing the grounding resistance can improve the lightning withstand level of distribution line effectively, reduce the lightning trip probability and improve the reliablility of power supply.
Key words: distribution line; lightning withstand level; simulation software ATP-EMTP; lightning protection measure
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