摘要
风电场中性点经电阻接地能够有效地降低工频过电压及弧光接地过电压的水平,从而有利于系统的安全可靠运行。利用PSCAD软件搭建了某风电场35 k V电网的电磁暂态仿真模型,通过对系统设置单相接地故障,分别对系统中性点经电阻接地方式和中性点不接地方式进行仿真研究。通过仿真结果得知,中性点经电阻接地更适用于风电场中性点接地方式,也有利于系统安全、稳定运行。
Wind farm neutral grounding can effectively reduce power frequency overvoltage and arc grounding over- voltage, so as to ensure the safe and reliable operation of power system. The author, therefore, establishes the elec- tromagnetic transient simulation model of a wind farm 35 kV power network by PSCAD, by which simulating resist- ance - grounded neutral system and neutral non - grounding system with the system set single - phase The simulation result shows that resistance -grounded neutral system suits to wind farm neutral grounding grounding.
出处
《黑龙江电力》
CAS
2014年第6期524-528,共5页
Heilongjiang Electric Power
