ABSTRACT
The study of contingency consists of the evaluation of the failure of elements, for example transmission lines, transformers, generators, and effects on line power flows and the bus voltages of the other unit. The objective of the power system analysis is to provide the operator with statistical safety information. Power system contingency analysis is an important practice in the preparation and maintenance of the power plant. A failure of a transmission line or transformer may usually lead to overloads in other branches or sudden increase or decrease in the network voltages. In this paper, a process of contingency analysis and sequential simulation cascading is to be implemented and tested so as to recognize possible cascading approaches. A method of modelling designated in this article provides a special ability to detect events leading to cascade failures. This method can be applied to boost the stability and susceptibility of the transmission network to cascading failures
