基于蝴蝶优化的配电线路双层迭代降损方法研究

为解决10 kV长配电线路损耗大、电压质量差及降损设备年投资回报率低等问题，提出一种结合蝴蝶优化的配电线路双层迭代降损增效方法。首先，考虑线路负荷三相不平衡，应用电力系统仿真软件OpenDSS建立目标配电线路分相潮流仿真模型。其次，增加10 kV线路无功补偿装置容量与位置以及调压器分接头挡位与位置为控制变量，建立以考虑全寿命周期成本(life cycle cost, LCC)的年投资回报率最大为目标的外层规划模型，以年有功损耗及年平均电压偏移量最小的多目标为内层运行模型。然后，利用蝴蝶算法通过Python调用OpenDSS潮流计算模型仿真，得到潮流结果和理论线损并求解降损模型。最后，以某供电公司线路为算例进行验证，结果表明该方法能为线路降损提供实用的实施方案。

A double layer iterative loss reduction method for distribution lines based on butterfly optimization

There are problems of large loss, poor voltage quality and low annual return on investment of loss reduction equipment in 10 kV long distribution lines. Thus a double-layer iterative loss reduction and efficiency enhancement method for distribution lines combined with butterfly optimization is proposed. First, considering the three-phase imbalance of line load, the power system simulation software OpenDSS is used to establish a simulation model of the target distribution line. Second, the capacity and position of the reactive power compensation device of the 10 kV line and the position of the voltage regulator tap are added as the control variables, and the outer planning model with the maximum annual return on investment considering the life cycle cost (LCC) is established. The multi-objective model with the minimum annual active loss and annual average voltage offset is the inner operation model. Then using the butterfly algorithm to call the OpenDSS power flow calculation model simulation through Python, the power flow results and theoretical line losses are obtained and the loss reduction model is solved. Finally, the line of a power supply company is taken as an example for verification. The results show that this method can provide a practical implementation scheme for line loss reduction.