浅谈铁磁谐振产生的机理及防范措施  

Generating mechanism and prevention of ferroresonance

作　　者：宋秋华[1] 席治国[1] 

机构地区：[1]大唐国际发电股份有限公司陡河发电厂,河北唐山063000

出　　处：《沈阳工程学院学报（自然科学版）》2011年第4期330-332,351,共4页Journal of Shenyang Institute of Engineering:Natural Science

摘　　要：电力系统是一个复杂的电力网络,在这个复杂的电力网络中,存在着很多电感及电容元件,尤其在中性点不接地系统中,常常因为系统扰动而出现铁磁谐振现象,给设备的安全运行带来了隐患.近期,陡河电厂连续发生2起因6 kV厂用设备发生单相接地故障造成6 kV母线发生谐振,导致6 kV母线电压互感器高压保险熔断事故.在此以这2起事故为例,阐述电力系统铁磁谐振产生的机理及原因,并提出相应的防范措施.Power system is a complex power network,there are a lot of inductance and capacitance elements in this complex network,especially in the neutral non-grounding system,the phenomenon of ferroresonance usually occurs during of system disturbance and threats at the device operation and security.Recently,there are two causes of 6kV plant equipment caused by single phase ground fault occurs 6kV bus resonance in plant,leading to high-voltage fuse incident of 6kV bus voltage transformer.The paper described the generated mechanism and the reasons of ferroresonance in power system and the production treatments of ferroresonance.

关 键 词：铁磁谐振 电压互感器 铁磁元件 

分 类 号：TM8[电气工程—高电压与绝缘技术]