Study Reactive Power Optimization Of Distribution Network With Wind Generators

As the power of emerging technology, Distributed Generation (DG) has a broaddevelopment prospect. The traditional distribution network is generally a single power supply,but distributed power grid, the number of power distribution network is increased, therebybecome more power supply mode. it will have impact on the distribution network reactivepower optimization. The work of this thesis is research distribution network reactive poweroptimization for wind power distributed power, the main work is as follows:When there is no distributed power in a distribution network, we carried on the workoptimization. According to the method of variation, the load can be determined over a periodof time, and load has little fluctuations. When the wind power distribution system, windspeed is constantly changing, the changes do not follow the law, even have great variation ina very short period of time a. So the distribution network reactive power optimization is verydifficult. In this paper adopt the time-interval strategy reasonable rules to assess the variationof wind speed in one day. For each row, the expected value of the wind speed time afterpartition is counting. Then according to the relationship between wind speed and windturbine power output, in the distribution network reactive power optimization are used.In view of the existing problems of the basic PSO algorithm, this paper uses chaosalgorithm to the algorithm of the particles in the swarm initialized. The convergence of PSOalgorithm is improved. Because the basic PSO algorithm in an iterative search process is easyto fall into local optimum, in order to avoid this drawback, the algorithm adds chaoticdisturbance factors. In order to chaotic disturbance for the global optimal value, in addition tomeet the probability of crossover particle hybrid operation, increase the diversity of particles,improve the global search ability of PSO algorithm.This paper introduces the reactive power optimization’s background, to establish twodifferent objective functions of the power grid without reactive power optimization model,and carries on the simulation of the IEEE33bus system and28nodes distribution system,shows the optimization operation of the distribution network is effective and distributedpower distribution network improvement algorithm.