电网技术Issue(11)：3001-3006,6.
重潮流下1000 kV同塔双回长线路的潜供电流及其限制措施
Secondary Arc Current in 1 000 kV Double-Circuit Long-Distance AC Transmission Lines on the Same Tower Under Heavy Power Flow and Its Restrictive Measures
王晓彤 1项祖涛 1班连庚 1张媛媛 1韩彬1
作者信息
- 1. 中国电力科学研究院，北京市 海淀区 100192
- 折叠
摘要
Abstract
It is an issue to be resolved urgently how to restrict secondary arc current in 1 000 kV double-circuit long-distance transmission lines on the same tower under heavy load flow to raise the success rates of single-phase auto-reclosure. Considering six possible phase arrangements, the computational analysis on the secondary arc current in 1 000 kV double-circuit long-distance transmission lines on the same tower under heavy load flow is performed. Research results show that from the viewpoint of restricting secondary arc current and voltage recovery, the reverse phase sequence arrangement is the best choice for double circuit transposed transmission lines on the same tower with HV shunt reactors;however, under lines with longer lengths and heavier load flow, it is not recommended to adopt the phase sequence arrangement of ABC/BCA and ABC/CAB for the lines on the same tower. When the conditions of conductor type, types of transmission towers, load flow and capacity of HV shunt reactors are determined, selecting appropriate neutral grounding reactor for HV shunt reactors and proper phase sequence arrangement can be regarded as two basic measures to restrict the secondary-arc current. When the demand of restricting secondary-arc current is not yet satisfied by using above-mentioned two measures, there are still two selectable measures: A) adopting two times of complete cycle transposition along the full length of transmission line and B) adopting controllable neutral grounding reactor for HV shunt reactors.关键词
1 000 kV/重潮流/同塔双回线路/潜供电流/可控中性点小电抗Key words
1000kV/heavy power flow/double-circuit transmission lines on the same tower/secondary-arc current/controllable neutral reactor分类
信息技术与安全科学引用本文复制引用
王晓彤,项祖涛,班连庚,张媛媛,韩彬..重潮流下1000 kV同塔双回长线路的潜供电流及其限制措施[J].电网技术,2013,(11):3001-3006,6.
