Analysis and treatment of above-norm leakage current on 220 kV lightning arresters of Taishan Power Plant;
台山发电厂220kV避雷器泄漏电流超标的原因分析及处理
Considering some factors,including the different operation mode and lightning strike location,also calculates and analyzes the infection of the impulse grounding resistance of transmission tower,the lightning arresters arranging and parameter for protection effect.
采用PSCAD/EMTDC程序计算分析了西北电网兰州东-银川东输变电工程750kV银川东变电站330kV线路雷电侵入波过电压保护,考虑了不同运行方式、不同雷击点的情况,还计算分析了杆塔冲击接地电阻、避雷器的布置及参数对保护效果的影响。
In Gui-Guang DC line Zhaoqing converter station auxiliary power line lightning protection upgrade project,a comprehensive scheme that increases number of composite insulator skirts,adds coupled earth wire and installs line lightning arresters is adopted.
在贵广直流肇庆换流站站用电源线路防雷改造中,采取了电源线路复合绝缘子加片、增设耦合地线和加装线路避雷器等综合防雷改造方案。
Examination method of independent lighting rod in flammable and explosive place;
易燃易爆场所独立避雷针检测方法
A math method of ensuring the protection range of lighting rod is discussed.
讨论了一种避雷针保护范围的计算方法,给出了图例和计算公式。
It is suggested that independent lighting rod is should be installed in the temporary resettlement arrangemen.
对救灾过渡安置点采用独立避雷针进行防护,该措施安全可靠、简便易行,就成为首选,其布设选点要科学、规范,可使其效益最大化,避雷针的制作和安装应符合技术标准要求,做到牢固可靠,在施工中要因地制宜,综合考虑,始终把安全和牢靠放在首位。
Construction conditions of separated single lightning rob in tank farm are discussed in accordance with the analysis of the national standard.
通过对某企业油罐区独立避雷针实例的计算 ,计算了独立避雷针的保护半径和范围 ,说明独立避雷针对罐区油罐的保护作用很有限 ,基本不能对油罐起保护作