Identification of L-G Fault Transients & Capacitors Switching Transients by Using Wavelet
Volume: 1 - Issue: 02 - Date: 01-02-2012
Approved ISSN: 2278-1412
Published Id: IJAECESTU187 | Page No.: 69-76
Author: Vinayak B Shinde
Co- Author: Shashank G Hase
Abstract:-In an Electrical power system, whenever the voltage level goes below the desired level,
there is need to improve the voltage profile. This increasing voltage can be obtained by using capacitor bank/s, as switching ON a capacitor bank/s causes increase in voltage while switching OFF a
capacitor bank/s causes decrease in voltage. But these switching actions, if not specifically controlled
give rise to transients which are undesirable and hazardous for the power system.
This paper introduces a voltage disturbance detection approach based on wavelet transform. The
proposed approach (1) Identifies voltage disturbances, and (2) discriminates the type of event which
has resulted in the voltage disturbance, e.g. either a fault or a capacitor-switching incident. Feasibility of the proposed disturbance detection approach is demonstrated based on digital time-domain simulation of a distribution power system using the PSCAD software package. Finally by using wavelet
transform discriminates the type of event on the basis of energy levels.
Key Words:-- Capacitor Switching, L-G, distribution system, transient analysis, PSCAD wavelet transform.
Area:-Engineering
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