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Fault Current Based Fault Location in Multiterminal Transmission Line using Wavelet Transform
Abstract
The transmission line fault is a very important issue in power system area. In order to restore the power system within a minimum period of interruption should be cleared quickly. So it is needed to identify the exact fault location in a transmission line. It is more difficult to find the fault location in multiterminal transmission line manually. Locating transmission line faults quickly and exactly is very important for the economy, safety and reliability of the power system. This project deals about Travelling Wave (TW) based fault location of the multiterminal transmission line by using Wavelet Transform (WT) for identifying the accurate fault location. Wavelet transform technique can be easily synchronized with other power system protective devices. In this paper, the simulation result shows that the proposed wavelet transform technique can locate faults more accurately above 99 percentage with different fault resistance. Thus the proposed technique is well matched for implementation in digital protection schemes. The wavelet transform technique, when combined with an advanced communication technology and wide area observing system, would be an effective tool for identifying the faults in any part of the transmission line system.
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References
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