摘要
高压铁塔接地电阻一般采用镀锌板焊接成接地网而构成,镀锌板受土壤的腐蚀接地电阻阻值会逐渐变大,接地电阻阻值变大会宜接影响引雷效果,为了掌握雨季时输电系统高压铁塔的接地电阻阻值情况,防止接地电阻超标引起输电线路遭受雷击损坏,研究并设计了一种新型的高压铁塔接地电阻在线监测系统,该监测系统包括在线监测装置和后台数据管理系统,在线监测装置采用双磁路法对高压铁塔接地电阻进行测量,并通过无线方式将实测接地电阻数据远程传送到后台数据管理系统,后台数据管理系统可以绘制每个铁塔接地电阻随时间变化曲线,并形成数据报表,可实时了解各个铁塔的接地电阻变化情况,该系统经实际使用对及时发现高阻值接地电阻效果明显,对保障输电线路供电安全具有重要的意义。
The grounding resistance of the high-voltage tower is generally formed by welding a galvanized sheet into a grounding grid. The corrosion resistance of the galvanized sheet is gradually increased by the corrosion of the soil. The resistance of the grounding resistance directly affects the lightning-leading effect, in order to grasp the transmission system during the rainy season. The grounding resistance of high-voltage towers prevents the grounding resistance from exceeding the standard and causes lightning damage to the transmission line. A new type of high-voltage tower grounding resistance online monitoring system is researched and designed. The monitoring system includes online monitoring device and background data management system. The monitoring device uses the dual magnetic circuit method to measure the grounding resistance of the high voltage tower and wirelessly transmits the measured grounding resistance data to the background data management system. The background data management system can draw the curve of the grounding resistance of each tower with time and form The data report can know the change of the grounding resistance of each tower in real time. The actual use of the system has obvious effect on finding the highresistance grounding resistance in time, which is of great significance for ensuring the power supply safety of the transmission line.
作者
李晓艳
张金波
张腾龙
宋佳佳
Li Xiaoyan;Zhang Jinbo;Zhang Tenglong;Song Jiajia(College of Internet of Things Engineering, HoHai University Changzhou 213022, China;Key Laboratory of Intelligent Technology and Special Robot, Changzhou 213022, China)
出处
《电子测量技术》
2019年第16期37-42,共6页
Electronic Measurement Technology
基金
中央高校基本科研业务费专项资金(2017B21214)
江苏高校首批2011计划“沿海开发与保护协同创新中心”计划项目(2018B48614)资助
关键词
高压铁塔
接地电阻
实时监测
远距离传输
high voltage tower
grounding resistance
real-time monitoring
long distance transmission
