The observations made in this study, The R/X ratio is with in the prescribed range when the line resistance is increased by 2.5 times the base case. Further increase in the line resistance has crossed the prescribed range and when the line resistance is increased beyond 4 times, the test system has diverged. This observation is same even with the incorporation of FACTS devices. The transmission line connected between buses 12 and 13 has an R/X ratio of which is beyond the prescribed range. 4Q2 The effect of varying resistance from 1 to 4 times the original case on the load flow solution results in increased no. of iterations and also there is increase in maximum power mismatch. Of sets considered for this study is to observe the point of divergence and ill conditionality. 4Q3 Based on the R/X ratio, FACTS devices are inserted. The line having highest R/X ratio is given first priority. Incase of divergence, the line having next highest R/X ratio is considered for locating FACTS devices. The lines with high R/X ratio is considered to incorporate the series device TCSC and combined series-shunt device UPFC because lines which have high R/X ratio are tend to diverge as discussed by many researchers. #NUMBER OF BUSES LIMIT FOR POWER WORLD SIMULATOR 19 SERIES#.#NUMBER OF BUSES LIMIT FOR POWER WORLD SIMULATOR 19 GENERATOR#.
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