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Reactive Power Planning of Distribution Network Based on Power Load Time-sequence Characteristics

Chen Li, Zhang Jinguo, Hou Chenwei

Reactive power planning (RPP) is one of the most important tasks to reduce power loss and ensure the system voltage quality in distribution network. The traditional RPP based on the maximum load level is pool economy and low equipment utilization of the compensation capacitors. The life cycle economy of the reactive power planning scheme is one of the important factors in power markets. So the mathematical model of RPP based on the power load time-sequence characteristics is proposed with the objective function of the maximum life cycle net benefit in present value, and the model shows the benefit of power loss reduction vividly. The improved sharing niche genetic algorithm is applied to reactive power planning of distribution network, and enhances the ability of global optimization and the stability of the results. The RPP program is developed by Visual 2005C#, and the test results prove its effectiveness and applicability.