电网技术2015，Vol.39Issue(9)：2621-2626,中插6,7.DOI:10.13335/j.1000-3673.pst.2015.09.037
复合材料杆塔输电线路接地方式优化研究
Research on Grounding Optimization of Composite Material Tower Transmission Line
摘要
Abstract
It turns out to be redundant in lightning protection performance and increases investment cost when grounding for each composite material tower(CMT) on transmission lines, while completely cancellation of grounding cannot guarantee safety operation of tower. Therefore it is meaningful to propose a new way to optimize grounding. An implementation process of configuring grounding which takes the factors such as terrain conditions and lightning activities into account is developed in this paper, which iteratively computes lightning withstanding level and lightning trip-out rate(LTOR) of CMT before comparing it with the examination index until obtaining a rational grounding scheme, thus improving the economic efficiency on the premise of technical indicator. An application of it to 3 typical sections of a transmission line shows that optimized method has reduced the usage of downward ground wire respectively by 1/2、2/3、1/3 than the case of grounding each tower while meeting the operating requirement. The achievement of this paper has great reference value for engineering applications.关键词
复合材料杆塔/接地/雷击跳闸率/优化/技术经济性Key words
composite material tower/grounding/lightning trip-out rate/optimization/technical and economic efficiency分类
信息技术与安全科学引用本文复制引用
雷梦飞,赵淳,苏杰,任华,王佩,张伟..复合材料杆塔输电线路接地方式优化研究[J].电网技术,2015,39(9):2621-2626,中插6,7.基金项目
国家电网公司实用新型指南项目(复合材料杆塔线路过电压与防雷技术研究). Project Supported by Science and Technology Foundation of SGCC(Research on Overvoltage and Lightning Proof Measures for Composite Material Tower Transmission Line). （复合材料杆塔线路过电压与防雷技术研究）
