Optimal Integration of D-STATCOM in RDS by a Novel Optimization Technique

Reactive power compensation in radial distribution systems (RDS) is an important requirement for improving the system power quality and security. Sine Cosine Algorithm (SCA) technique is a modern technique based on updating the positions of populations around the best solutions by sine cosine functions this work presents a new modified version of a SCA technique based on a levy flight distribution is presented and applied for determine the optimal locations and sizes of Distribution Static Synchronous Compensator (DSTATCOM) in RDS as a reactive power source. The considered objective function is a multi-objective function which includes minimizing the real power losses, enhancing the voltage profile and improving the system stability, concurrently. To show the efficiency of the proposed technique it is applied on the stranded 85-bus system and the captured results are compared to the founded results of the basic SCA and particle swarm optimization (PSO) techniques. The simulation reveals to that the proposed algorithm is more superior compared to the other reported algorithms. In addition, noticeable results are gained with incorporating D-STATCOM optimally in terms of objective function.