DocumentCode :
3133568
Title :
A transient fault detection technique with varying fault detection window of earth modes in unearthed MV systems
Author :
Abdel-Fattah, Mohamed F. ; Lehtonen, Matti
Author_Institution :
Dept. of Electr. Eng., Helsinki Univ. of Technol. (TKK), Espoo
fYear :
2008
fDate :
27-29 Aug. 2008
Firstpage :
181
Lastpage :
186
Abstract :
This paper presents a transient fault detection technique in unearthed medium voltage systems. The system is simulated by ATP/EMTP program. A suitable fault detection window is introduced. The window width is the most sensitive part in the transient period. It is varying according to fault characteristics. The average impedance of the earth mode is calculated from voltage and current earth modes in the window. Based on the amplitude of the impedance, the feeder is confirmed to be faulted or not. The setting of detection is proposed from the simulation results that cover different fault inception angles and fault resistances.
Keywords :
earthing; fault diagnosis; transient analysis; ATP-EMTP program; average impedance; current earth mode; earth mode; fault detection window varying; fault inception angle; fault resistance; transient fault detection technique; unearthed MV system; voltage earth mode; Circuit faults; Earth; Electrical fault detection; Fault detection; Frequency; Impedance; Power system protection; Power system simulation; Power system transients; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Quality and Supply Reliability Conference, 2008. PQ 2008
Conference_Location :
Parnu
Print_ISBN :
978-1-4244-2500-6
Electronic_ISBN :
978-1-4244-2501-3
Type :
conf
DOI :
10.1109/PQ.2008.4653758
Filename :
4653758
Link To Document :
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