CKF-1纵联方向保护与ZY-6型电压抽取装置配合使用中遇到的问题分析

Analyses of the problems in combined usage of CKF-1 and ZY-6

ZY-6型电压抽取装置采用电容分压原理,体积小,成本低,常用于220 kV线路保护的无压鉴定。采用电容分压原理的电容式电压互感器CVT(capacitor voltage transformer)根据采用的阻尼器的不同,在应用过程中继电保护装置应注意与其配合。通过对北京地区2004年的几起事故进行理论分析、分析出事故原因,采取一定措施,解决系统的安全稳定运行问题。

ZY-6 capacitor-voltage detecting device applied to appraisal of non voltage in 220kV line protection with small volume and low cost. It must pay some attention to the damper of CVT in relay protection. Measures for solutions to safety of power system is proposed in this paper, from the theoretic analyses of several accident in Beijing of 2004 year.