Optimization Of Traction Substation Hybrid Power Filter Based On Genetic Algorithm

In our country single_phase rectifier drivers most electric locomotives, which produce many harmonic currents. Nowadays, in our country most traction substations use 3 orders single tuned passive filters to suppress harmonics, the performance of this way is far from satisfied. So it is necessary for us to take new steps to suppress harmonics well. Active power filter can overcome the shortcomings of passive power filter and suppress harmonics caused by electric locomotives well, but the cost of active power filter is very high. Using hybrid power filter consisting of passive power filter and active power filter but retain their advantages. So it is an ideal scheme for us to suppress harmonics of electrified railway.The article discussed the traction substation hybrid power filter to install at the best location, the structure, the Active power filter and passive power filter in the series after the parallel bus on a fixed pose a harmonic filter for slip compensation program was discussed in an attempt to passive and active power filter as a power filter. The mathematical model and arithmetic of optimization design on least investment of the hybrid power filter are given in this dissertation. Respectively, from conventional genetic algorithm and improved genetic algorithm optimization results obtained were compared, by using detecting data from a certain traction substation this dissertation designs hybrid power filters for it.The mathematical model and arithmetic of optimization design on least investment of the hybrid power filter are given in this dissertation. By using detecting data from a certain traction substation this dissertation designs hybrid power filters for it. In the algorithm, some genetic operators are improved after going deep into researching, and an application program is programmed with Matlab GA tools.The Matlab/Simulink is used in the power system module structure of the single-phase device and the circuit simulation. In this paper, and carried out the theoretical analysis by the results of the simulation.