摘要
从电磁式电压互感器铁芯饱和引起的铁磁谐振的机理出发,介绍了铁磁谐振的特点与危害,重点对抑制铁磁谐振的常见实用方法作了分析,并得出了结论:对10kV中性点绝缘系统,采用在PT一次侧中性点串接电阻型消谐器是比较成功的,其结构简单,安装方便;35kV系统由于一般出线较长,增装消弧线圈是有效的,对系统的安全运行十分有利。
Core saturation of electromagnetic PT will result in ferro-resonance. On this basis, this paper analyses its characteristics, harmfulness, and general suppression methods respectively. With method analysing, this paper reaches to its conclusion that in 10 kV neutral-isolated system, neutral serial connecting resistance-based resonance suppression device on PT primary side is acceptable because of its simpleness and easy installation. Adding arc-suppression coil in long-outlet-line 35 kV system is effective, which can ensure the system stable operation.
出处
《继电器》
CSCD
北大核心
2004年第20期40-42,共3页
Relay
