利用自然适应性解决农村配电网电压质量问题的优化规划研究

针对目前农村配电网易出现负荷重时电压偏低、负荷轻时电压偏高的情况,提出一种利用配电网的自然适应性而不必建设通信通道和控制电容器投切的电压治理方案。综合运用增大导线横截面积、改造成三芯架空电缆和安装并联补偿电容器的手段改善农村配电网的电压质量。以规划期内收益最大为目标函数,综合考虑农村配电网改造后节省的损耗费用、加粗或改用架空电缆的费用和加装电容器的建设费用,建立了固定电容器与线路改造相结合的优化规划模型。给出了一个典型算例详细进行了说明,分析结果表明所建议的方法能够有效改善农村配电网电压质量。

Optimal Planning of Improving the Voltage Performance for Rural Distribution Networks by Utilizing the Nature Adaptability

To deal with the problems of low voltage with heavy load while high voltage with light load in rural distribution networks, an approach of improving the voltage performance by utilizing the nature adaptability of distribution grid is proposed, in which, neither communication channel nor control capacitor is needed.The optimization planning model is set up, in which, the benefit in the planning period is introduced as the index.The benefit of loss reduction, the cost of fixed capacitor arrangement, conductor expanding and cable replacement are considered in the planning.A typical example is given in detail to illustrate the proposed approach, the results of which show its feasibility and effectiveness.