Optimization Design of Relay Protection Setting in Power System Based on Improved Genetic Algorithm
[Purposes]The traditional optimal design method of relay protection setting in power system di-rectly optimizes the parameters without analyzing the operation characteristics of relay protection de-vices,which leads to poor optimization effect.Therefore,the optimal design of relay protection settings in power system based on improved genetic algorithm is proposed.[Methods]Firstly,the operating charac-teristics of relay protection devices are analyzed according to the total protection action time and relay protection device current,then the fitness function is designed according to the parameters such as sensi-tivity,selectivity and stability,and the random parameters are optimized by using the improved genetic algorithm.On this basis,the relay protection setting optimization model of power system is constructed to realize the setting optimization.[Findings]The experimental results show that this method only needs 80 iterations to achieve the optimal value for the two-phase short-circuit fault,and has better relay pro-tection setting optimization effect and better power system performance.[Conclusions]The relay protec-tion setting optimization method based on the improved genetic algorithm can adapt to the complex and changeable power system operation scenarios,so it can be widely popularized and applied in practical en-gineering applications to improve the security and stability of the power system.
improved genetic algorithmpower systemrelay protectionfixed value optimization designoptimization strategy
万方数据
维普
