Fault Analysis of Double Line Transmission System with STATCOM Controller Using Neuro-Wavelet Based Technique

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Author(s) R.Kameswara Rao | G.Ravi kumar | Shaik Abdul Gafoor | S.S.Tulasi Ram
Pages 969-973
Volume 2
Issue 6
Date June, 2012
Keywords Distance relay, Flexible alternating current transmission controllers, STATCOM, 48-pulse Voltage Source Converter, power system protection.


The STATCOM (Synchronous Static Compensator) based on voltage source converter (VSC) is used for voltage regulation in transmission and distribution systems. The STATCOM can rapidly supply dynamic VARs required during system faults for voltage support. The apparent impedance is influenced by the reactive power injected or absorbed by the STATCOM, which will result in the under reaching or over reaching of distance relay. This paper presents simulation results of the application of distance relays for the protection of transmission systems employing flexible alternating current transmission controllers such as STATCOM. The complete digital simulation of the Static synchronous Compensator within a transmission system is performed in the MATLAB/Simulink environment using the Power System Block set (PSB). This paper presents an efficient method based on wavelet transforms, fault detection, classification and location using ANN technique which is almost independent of fault impedance, fault distance and fault inception angle of transmission line fault currents with FACTS controllers.

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