Design Of Reactive Power Compensation System Of Distribution Network In Xiying Town Of Jiutai City

In the distribution network, because there is no large-scale power supply and large transformers, when some bus voltage appears beyond the operating range of the phenomenon, usually through a reasonable vote back to the reactive power compensation device to adjust the voltage. When the grid voltage level exceeds the operating limit, you can suppress the voltage level by putting the reactor, when the voltage level in the grid below the lower limit of operation, you can put into the capacitor to raise the voltage level. At present, there are few researches on reactive power compensation system in distribution network. In the distribution network, the control strategy of reactive power compensation device is simply decided according to the level of voltage. This control strategy is simple. A certain error. In some specific operating mode, there is excessive regulation, and in the distribution network reactive voltage control process does not take into account the network loss, so the traditional distribution network reactive voltage control is only a simple voltage level And the accuracy of the control is neglected. In this paper, the reactive power compensation system of Xiying urban distribution network in Jiutai City is designed. The concrete work is as follows:Firstly, the status quo of distribution network in Jiutai is studied, including the structure of grid, the current situation of load, the current situation of wire, and the present situation of distribution transformer. On this basis, the load level of Jiutai is forecasted effectively.The basic methods and principles of reactive power compensation in distribution network are studied. Firstly, the influence of reactive power compensation on grid is analyzed. There are two aspects, one is the influence of voltage, and the other is the influence of reactive power loss.. On this basis, the selection of reactive power compensation mode, the determination of compensation capacity and the optimization of compensation position are introduced.Thirdly, the capacity and position of reactive power compensation of distribution network are researched. First, the principle of reactive power balance of distribution network is put forward, and the voltage characteristics under different load conditions of Jiutai Xiping distribution network are analyzed. Based on this principle and the specific voltage characteristics, the optimization methods of the reactive power compensation devices under different optimization objectives are introduced, including the loss reduction target, the voltage level, the compensation equivalent, the minimum loss and so on. The optimization method of reactive power configuration in Xitai town of Jiutai is determined and the optimization results are obtained.In the PSASP software, the paper analyzes the reactive power optimization strategy of the Xiying urban distribution network in Jiutai City. Firstly, it sets up the example model of Jiutai Power Grid, and compiles the reactive power optimization program, analyzes the reactive power in detail. The optimization algorithm includes the establishment of the objective function and the restriction condition. Finally, the simulation results show that the reactive power and voltage optimization of this paper has achieved good results.