摘要
阐述了超/特高压输电线路在单相接地故障后的潜供电流的形成机理,分析了不同因素对潜供电流的影响。以IEEE-14节点系统为例,在系统中加入一条特高压线路,利用PSASP/ETSDAC电磁暂态分析程序进行仿真计算,对比分析了集中参数线路和分布参数线路对潜供电流仿真计算的精度差异,实验研究了线路长度、电压等级等因素对潜供电流的影响,给出指导性结论为工程做参考。
The forming mechanism of secondary arc current on EHV/UHV transmission line after single-phase earth fault was described, and the influence of different factors on the secondary arc current was analyzed. An EHV/UHV transmission line was added in IEEE-14 system; the secondary arc current was calculated by means of the electromagnetic transient simulation software PSASP/ETSDAC; the influence of the lumped parameter and distributed parameter line model on simulation calculation accuracy of second arc current was comparatively analyzed. The influence of factors such as line length and voltage grade on the secondary arc current was experimentally studied; the instructive conclusions were given for the engineering reference.
出处
《电源技术》
CAS
CSCD
北大核心
2015年第8期1751-1754,共4页
Chinese Journal of Power Sources
基金
国家自然科学基金(51107124)
国家重点基础研究发展计划项目("973"计划)(2013CB228203)
