DocumentCode :
3485400
Title :
Analysis of voltage dips in power system - case of study
Author :
Tesarova, Miloslava
Author_Institution :
Univ. of West Bohemia, Pilsen
fYear :
2005
fDate :
27-30 June 2005
Firstpage :
1
Lastpage :
5
Abstract :
The knowledge about the occurrence of voltage dips in a network can be obtained through the use of power quality monitors or by means of prediction methods. For assessment of the number of voltage dips, the method of fault positions could be used. The method was applied to a real 110 kV grid. The common software for short-circuit analysis was used for calculation of remaining voltage in the network during the faults. All fault types were taken into account. The expected number of dips and distribution of remaining voltage in the chosen substation, and the exposed areas for this substation are calculated. The results were compared with the outcome of the voltage dip monitoring. Although the comparison shows a good correspondence, the accuracy of assessment could be very influenced by accuracy of the failure statistics.
Keywords :
fault diagnosis; power distribution faults; power grids; power supply quality; power system measurement; fault positions; power quality monitors; power system; voltage 110 kV; voltage dip monitoring; Circuit faults; Computerized monitoring; Condition monitoring; Power quality; Power system analysis computing; Power system faults; Prediction methods; Stochastic processes; Substations; Voltage fluctuations; Power distribution; computer-aided analysis; power quality; power system modeling; power systems; voltage dip; voltage monitoring;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Tech, 2005 IEEE Russia
Conference_Location :
St. Petersburg
Print_ISBN :
978-5-93208-034-4
Electronic_ISBN :
978-5-93208-034-4
Type :
conf
DOI :
10.1109/PTC.2005.4524616
Filename :
4524616
Link To Document :
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