Reliability Based Priority Allocation of Contingencies in a Complex Power System Network

Power system network consists ofsynchronous generators, transmission lines, shunt capacitors, transformers and loads. The reliability of a complete system depends on individual components reliability performance. Reliability study of a network deals with the interruptions of network. The failure of components depends on whether conditions, ageing effects, other components failure and parameter limit violation. The effect of failure on reliability performance of a system is different for every contingency. The only probability of a failure of a component does not decide the severity of failure on the power system but also depends on the rating of component. In this paper, the state probability and severity index due to the failure of each component of a thirty bus interconnected power system network is calculated and then the reliability performance based priority of contingency is investigated