作者：刘嘉文1, 周庆华2, 李丽1, 李涛2
作者单位：1. 广东电网公司电力科学研究院, 广东 广州 510080;
2. 长沙理工大学物理与电子科学学院, 湖南 长沙 410004
关键词：500 kV; 同塔四回输电线路; 电场强度; 屏蔽线
摘要：
为使输电线路下方的工频电场符合国家限值要求的同时有效降低工程造价,建立500 kV同塔四回输电线路模型,计算不同条件下线路下方的工频电场,得到工频电场最大值与相线高度之间的关系,提出500 kV同塔四回输电线路下方工频电场的防护措施,为在工频电场超过限值的区域架设屏蔽线提供参考方案。
Simulating and reducing power-frequency electric field of 500 kV quadruple-circuit transmission line on same tower
LIU Jia-wen1, ZHOU Qing-hua2, LI Li1, LI Tao2
1. Electric Power Research Institute, Guangdong Power Grid Company, Guangzhou 510080, China;
2. School of Physics and Electronic Sciences, Changsha University of Science and Technology, Changsha 410004, China
Abstract: In order to suppress the power-frequency electric field according to the limit requirement specified in the national standard and reduce the engineering cost effectively, computational models of 500 kV quadruple-circuit transmission line on the same tower are used to evaluate the power-frequency electric field under the transmission lines. The relationship between peak field strength and the height of the phase line is analyzed quantitatively. The result can be used to suppress the power-frequency electric field according to the limit requirement specified in the national standard and reduce the engineering cost effectively. It can also be used as reference for engineering. The influences of quantity, horizontal position and height of shielding wire on the shielding effect are analyzed respectively, which provide some reference for the configuration of shielding wire.
Keywords: 500 kV; quadruple-circuit transmission line on same tower; power-frequency electric field; shielding wire
2014, 40(1): 36-39 收稿日期: 2013-6-19;收到修改稿日期: 2013-9-3
基金项目: 中国南方电网公司科技项目(K-GD2011-414)
作者简介: 刘嘉文(1983-),男,广东广州市人,工程师,硕士,主要从事电力系统电力环境保护及劳动卫生监测工作。
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