摘要
本文在分相式全电流差动保护的基础上，提出了一种利用相电流突变量构成分相式突变量差动保护、利用两端零序电流构成零序差动保护的新方案，在保证区外故障具有足够防卫能力的前提下，该保护在重负荷大电阻区内故障时具有很高的灵敏度。
A new scheme of utilizing phase current fault component to realize split-phase current fault component differential protection and utilizing zero-sequence currents of both ends to realize zero-sequence current differential protection is presented basing on splitphase full current differential protection. On the precondition of assuring enough preventability against fault beyond reach,the protection has very high sensitivity in high resistive fault within reach on heavy load.
出处
《继电器》
CSCD
1996年第3期4-9,共6页
Relay
关键词
微机
线路保护
电流差动保护
电力系统
fault component current differential,zero-sequence current differential,microprocessor-based line protection
