摘要
为了研究潜供电弧的熄弧时间,提高单相自动重合闸的成功率,对影响潜供电弧的参数进行了理论分析,并利用电磁暂态仿真软件PSCAD/EMTDC建立了输电线路发生单相接地故障后,模拟电弧发展的模型,并以晋东南-南阳-荆门1 000kV特高压交流试验示范工程为例,分析了影响特高压输电线路潜供电流的因素,其中包括导线布置方式、线路换位方式、线路输送容量、线路的结构等。本文的分析结论将为减少潜供电流的方法提供理论依据,对将要建设的特高压输电线路有重要的参考意义。
To study the secondary arc extinction time and ensure the success of the single-phase automatic reclosing, the secondary arc parameters are theoretically analyzed, and an arc model is built to simulate the transmission line fault after the single phase grounding by use of the electromagnetic transient simulation software PSCAD/EMTDC. The Jin dongnan-Nanyang-Jingmen UHV （Ultra High Voltage） AC transmission lines item is used as an example. Factors influencing the secondary arc current are analyzed, such as line arrangement, conductor transposition, transmission capaci- ty, line structure and so on. Simulation results are consistent with the theoretical analysis. The conclusions can offer references to the under construction UHV projects.
出处
《现代电力》
2010年第1期1-5,共5页
Modern Electric Power
关键词
潜供电流
输电线路
潜供电弧
耦合
特高压
secondary arc current
transmission line
secondary arc
coupling
UHV
