牵引变电所接地网特性参数测试分析  

Test Analysis of Characteristic Parameters of Traction Substation Grounding Grid

作　　者：方鸿波[1] FANG Hongbo(Kunming Survey,Design and Research Institute Co.,Ltd.of CREEC,Kunming 650200,China)

机构地区：[1]中铁二院昆明勘察设计研究院有限责任公司,云南昆明650200

出　　处：《电工技术》2022年第9期60-62,共3页Electric Engineering

摘　　要：随着电气化铁路的快速发展,对牵引变电所的安全性和可靠性提出了更高的要求。接地网是维护牵引变电所可靠运行及保障人身安全必不可少的环节,对接地网安全状态进行测试,及时掌握接地网运行状态,可避免事故的发生。基于相关标准,对接地阻抗、接触电压、跨步电压、场区地表电位梯度及电气完整性等接地网特性参数开展了综合测试,并结合限值要求,定量评估了牵引变电所接地网的运行状态,为保障电气化铁路的安全稳定运行提供参考。With the rapid development of electrified railways,higher requirements are put forward for the safety and reliability of traction substations.The grounding grid of traction substations is an indispensable link to maintain its reliable operation and ensure personal safety.Testing the safety status of grounding grid and mastering the operation status of grounding grid in time can avoid accidents.Based on relevant standards,comprehensive tests are carried out on the characteristic parameters of grounding grid such as grounding impedance,contact voltage,step voltage,field surface potential gradient and electrical integrity.Combined with the limit requirements,the operation status of the grounding grid of the traction substation is quantitatively evaluated,which provides a reference for ensuring the safe and stable operation of the electrified railway.

关 键 词：接地网 接地阻抗 接触电压 电气完整性 

分 类 号：TM922.4[电气工程—电力电子与电力传动]