摘要
电磁式CT的磁饱和问题一直是影响继电保护正确动作的主要原因之一,只有应用新型的无磁饱和互感器以及相应的保护系统才能从根本上解决这些问题,为此,该文在完善了新型自适应光学电流互感器(AOCT)理论体系基础上,研制了实用化的AOCT,将AOCT与新型线路差动保护构成的一体化系统应用于河北省保定供电公司的一条35kV输电线路上运行。运行结果表明,AOCT具有优良的测量性能,能够为保护提供高保真的测量数据;整套一体化系统当发生多次区外故障时均可靠不动,在一次区内故障时正确动作,满足了现场实际运行的要求。
Magnetism saturation of traditional current transformer is one of the main reason for relay wrong operation. It is applying new transducer with no saturation and its prtoection that can slove these problems thoroughly. The new practical adaptive optical current transducer （AOCT） is manufactured, on the basis of perfecting the theory system of AOCT, and the opterating system of AOCT and its transmission line differentional protection is applied in the 35kV transmission line in BaoDing city HeBei province. The operating results indicate that AOCT take on the excellent measurement performance and can provide the real measure- ment datum of current for its protection; when fault out of protecting area occuring the opterating system of AOCT and its protection do not act reliably, by contrast when fault in protecting area occuring do act reliably; therefore the system can meet the need of operation in the substation.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2007年第22期57-62,共6页
Proceedings of the CSEE
基金
国家自然科学基金(50347023)
高等学校博士学科点专项科研基金(20030079007)~~
