DESIGN AND ANALYSIS OF MW SCALE SUB-STATION FED BY WINDFARM WITH SUPERCONDUCTING FAULT CURRENT LIMITER

This paper describes the Short circuit analysis for the proposed 220/33kV substation for finding the Maximum & minimum fault level at substation & fault level feeding from the grid network in E Tap. For this a grid network was assumed. With the Maximum & Minimum fault levels arrived from analysis protective relay coordination carried out for the entire proposed 220/33kV substation in E tap. Here the substation is fed with Renewable source, Wind farm. With assumption of growth in IPPs (Independent power purchasers), the fault level feeding to our substation from grid will be increased. So, to mitigate the fault level at our proposed 220/33kV substation, super conducting fault current limiter (SFCL) is implemented. The results & comparisons of fault levels are carried out in MATLAB Simulink with & without SFCL device. It confirms that the presence of SFCL worked out outstandingly in the fault current reduction