APPLICATION OF EXTENDED EVOLUTIONARY PROGRAMMING TO SVC PLACEMENT

An extended evolutionary programming (EXEP) technique is proposed for optimal solution of the SVCplacement in voltage stability enhancement. Multiple genetic transformation operators are used to ensure that theglobal optimal solution can be obtained. The problem is posed as the minimization of the function whose objectivesare to increase the reactive power margin, the reactive power spinning reserve and the system voltage profile. Atthe same time it is required that the transmission losses are reduced and the additional cost of new SVC devices isminimal. All the operational inequality constraints are transformed to the objective function by using quadratic andcosine penalty functions. Numerical results show that EXEP technique is superior to simulated annealing (SA)technique.