Fast detector of symmetrical fault during power swing for distance relay
作者： B. Su , X.Z. Dong , Z.Q. Bo , Y.Z. Sun , B.R.J. Caunce
关键词: Voltage 、 Emtp 、 Swing 、 Engineering 、 Fault indicator 、 Detector 、 Electrical engineering 、 Stuck-at fault 、 Power (physics) 、 Electronic engineering 、 Fault (power engineering)
摘要: Distance relay should be blocked during power swing to ensure the reliability, but still trip as soon possible after an internal fault occurs swing. It was very difficult detect symmetrical reliably and fast with complex conditions considered. This paper presents a new detector of Based on sudden reduction absolute value change rate centre voltage (PSCV), presented can sensitively in two cycles. is easy set immune period, arc, location angle. EMTP simulations real-time digital simulator system (RTDS) tests prove fast, sensible reliable.
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