摘要
介绍了基于32位DSP所研制开发的WXH-803数字式光纤电流差动保护在500kV系统中的动模实验情况及330kV挂网运行情况。该装置采用96点高采样率、快速短窗算法,采用故障分量差动、全电流差动、零序差动作为差动保护的判据,在500kV系统动模中典型动作时间16～18ms。
With the development of tele-communication in power systems,current differential protection based on optical fiber will be developed as the main protection of EHV power transmission line.This paper presents WXH-803 current differential protection system developed with 32-bit DSP,and its dynamic simulation test in 500 kV system and commissioning in 330 kV power line.This device employs the methods of 96 sample points per power cycle and short-window fast algorithm,takes fault component current differential,full current differential,and zero-sequence current differential as criteria of its differential protection.It takes 16～18 ms when operated in 500 kV dynamic simulation test.
出处
《继电器》
CSCD
北大核心
2004年第2期40-43,共4页
Relay
关键词
WXH-803
光纤电流差动保护
继电保护
电力系统
microcomputer-based line protection
optical fiber
current differential protection
short-window fast algorithm
