A New Algorithm for Optimal Parameters & Safety Operation of Power Systems under Normal and Contingency Condition

System possibilities in power frameworks frequently add to over-stacking of system branches, inadmissible voltages and issues of voltage steadiness/voltage collapse. Optimal power flow (OPF) is a static nonlinear programming issue which enhances a specific target work while fulfilling a lot of physical and operational imperatives forced by gear confinements and security/voltage dependability requirements. Flexible AC transmission systems (FACTS) apparatus are coordinated in power frameworks for controlling force stream to enhance the execution of the power frameworks under both ordinary activity and system contingency. This paper presents a new algorithm named Modified Adaptive Differential Evaluation to limit the generator fuel cost in ideal power stream control with Flexible AC Transmission systems and voltage soundness constraints. The FACTS apparatus considered here incorporate static synchronous compensator (STATCOM) and static synchronous series compensator (SSSC). The proposed methodology has been inspected and tried on the IEEE 30-bus test network. A few cases were explored to test and approve the power of the proposed strategy in finding the ideal arrangements under both ordinary activity and chose system possibility conditions. Test results show that the proposed methodology can get better arrangement and requires less CPU time than the calculations announced in the writing.