Voltage Security Operation Region Calculation Based on Improved Particle Swarm Optimization and Recursive Least Square Hybrid Algorithm

Large-scale voltage collapse incidences, which result in power outages over large regions and extensive economic losses, are presently common occurrences worldwide. To avoid operate more safely reliably, it is necessary to analyze the security operation region (VSOR) of systems, has become a topic increasing interest lately. In this paper, novel improved particle swarm optimization recursive least square (IPSO-RLS) hybrid algorithm proposed determine VSOR system. Also, stability analysis on carried out by analyzing errors convergence accuracy obtained results. Firstly, VSOR-surface system analyzed paper. Secondly, two algorithms, namely IPSO RLS studied individually. Based understanding, IPSO-RLS optimize active reactive power, allowed identify accurately. Finally, validated using simulation case study three wind farm actual Hami Power Grid China DIgSILENT/PowerFactory software. The error results compared with those (PSO), algorithms.