CABLE MODELING AND FAULTSTUDY FOR THE lIT PERFECT POWER SYSTEM
IIT has taken part in the smart grid initiative by converting the existing radial distribution network into a looped network to increase the reliability of the system as part of the ’Perfect Power’ project. A total of 7 loops have been planned with the help of fast fault clearing relays (’Vista Switches’). As part of the project, the cable is modeled using the various impedance calculators and was also done using the PSCADrsoftware. With the obtained impedance values from the impedance calculators, the cables were analyzed under various outage/contingency cases. They include base case power flows of the old IIT distribution network as well as the Loop 3 of the perfect power project implemented and open circuit analysis and short circuit analysis of the Loop 3 alone. Also, with the help of the fault current values from the short circuit study we can analysis the relay settings and operations and review the later for the newly installed relays. And finally, the cable fault classifier was designed using the Artificial Neural Network (ANN) method in MATLABrand PSCADrsoftware. Here we model the cable using the impedance calculated and collect the voltage and current samples from the two ends of the cable which is given as input to the ANN classifier and the same is tested for accuracy.