Static voltage stability margin calculation and research based on immune/Tabu search hybrid algorithm

At present, the algorithm used in optimization calculation of the system static voltage stability margin can´t meet the real-time requirements very well. For this reason, this paper presents a new method of static voltage stability margin calculation based on immune/Tabu search hybrid algorithm. This method combines improved immune algorithm and Tabu search algorithm. Through improved continuation power flow, the maximum static voltage stability margin of system can be quickly and accurately achieved by the hybrid algorithm. To a certain extent, the method makes up for efficiency deficiencies of traditional optimization algorithm. Using the new method several simulation for IEEE 30-bus system are conducted. Compared with improved genetic algorithm, metric Tabu search algorithm, genetic/Tabu search hybrid algorithm, and immune algorithm, the result shows that the method is feasible and effective.