基于LCC和改进粒子群算法的配电网多阶段网架规划优化

Multi-stage Planning Optimization for Power Distribution Network Based on LCC and Improved PSO

市场环境下,配电网规划方案全寿命周期经济性变得越来越重要。基于设备全寿命周期成本建立了配电网多阶段网架及开关布置规划新模型,模型同时考虑了规划方案初始投资、运行维护成本、停电成本、报废成本;在满足各阶段负荷发展需求的条件下,以规划项目全寿命周期经济性最优为目标函数确定不同支路的建设时间;建立了配电网停电成本计算模型,该模型反映了停电频率、停电持续时间及停电电量对停电成本的综合影响。提出一种将均值聚类与随机粒子群算法相结合的改进离散粒子群算法对上述模型进行求解,该算法克服了基本粒子群算法的"早熟"问题。该规划方法使得规划方案不仅满足全寿命周期经济性最优,而且兼顾一定的可靠性水平。规划实例验证了上述模型和方法的正确性和有效性。

The life cycle economy of the power distribution network planning scheme is becoming more and more important in power markets.The new model of the distribution network multi-stage planning and the configuration of switches based on the life cycle cost（LCC） of equipment was presented.The initial investment,operation and maintenance cost,outage cost and disposal cost of planning scheme were considered.According to the development of the load,the construction time of the distribution feeders can be decided based on the optimal LCC.The function of fault cost was built,and the function reflected the comprehensive effect of the frequency,duration and quantity of outage to the fault cost.The improved algorithm based on the combined mean clustering algorithm and random particle swarm algorithm was presented.The new algorithm＇s global searching capability was improved.The distribution network planning method based on LCC is not only reliable,but also the most economical.The new model is feasible and practical by a realistic planning project.