中国电力2018，Vol.51Issue(6)：96-101,6.DOI:10.11930/j.issn.1004-9649.201608030
融冰绝缘地线对变电站雷电过电压的影响
Analysis of the Lightning Overvoltage of Substation in Melting Ice Insulated Ground Wire System
马御棠 1马仪 1曹晓斌 2黄然 1陈奎 2周仿荣1
作者信息
- 1. 云南电网有限责任公司电力科学研究院,云南昆明 650217
- 2. 西南交通大学电气工程学院,四川成都 610031
- 折叠
摘要
Abstract
The ground wire using full insulation design is employed in the direct current (DC) melting ice technology. But the design of insulated ground wire will affect the largest over-voltage level of electrical equipment in substation. In this paper taking the actual 500 insulated ground wire as an example, the way of erected melting ice insulated ground wire was described. The insulated ground wire simulation model of 500 kV substation was established using ATP-EMTP simulation software. The influence of erection of the melting ice ground wire of 500 kV substation lightning overvoltage was analyzed. The influences law of the lightning-point distance, tower grounding resistance and arrester configuration on the lightning overvoltage of substation equipment were summarized. The results show that the melting ice insulated ground wire has little effects on the largest overvoltage of substation equipment. The closer of the lightning point to the substation is, the greater of over-voltage of substation equipment is. The bus arresters have well protective effects on the substation equipment. The largest overvoltage of substation equipment can be declined by using the bus arresters. The overvoltage level of substation equipment can decrease with the decrease of tower grounding resistance. The results can provide a certain reference to run and design the insulated ground wire in practice.关键词
超高压输电线路/直流融冰/绝缘地线/变电站/雷电过电压/ATP-EMTPKey words
EHV AC/DC melting ice/insulated ground wire/substation/lightning over voltage/ATP-EMTP分类
信息技术与安全科学引用本文复制引用
马御棠,马仪,曹晓斌,黄然,陈奎,周仿荣..融冰绝缘地线对变电站雷电过电压的影响[J].中国电力,2018,51(6):96-101,6.
