考虑分布式电源的配电网线损估算方法

提出一种考虑分布式电源影响，适用于城乡配电网规划的理论线损综合估算方法．依据目标配电网的建设与改造原则和中压电网分年度规划方案，利用等效容量法处理分布式电源，基于扩展等值电阻法估算中压配电网线损；并考虑变压器台区情况，分别使用等值电阻数据和规划目标典型数据估算低压配电网线损；结合传统潮流法计算的高压电网线损，估算配电网理论线损．通过对贵州某县级配电网的规划案例分析，验证了该方法的有效性和实用性．

Distribution network losses estimation method with distributed generators considering

A distribution network losses estimation method for urban and rural distribution system planning is proposed with distributed generators considering in this paper. Firstly, according to the objective distribution system annual plan and the system construction and renovation principles, each distributed genera- tor is treated as a equivalent source, and the Medium Voltage（MV） network loss is estimated for the current and target year based on an extended equivalent resistance method. Secondly, considering the transformers supply areas, the field equivalent resistance data for annual year are respectively used to calculate the corresponding Low Voltage （LV） network loss. Finally, combining with the High-Voltage （HV） network loss calculated by the conventional power flow algorithm, the theoretical whole distribution system power loss is estimated for distribution system planning. One county distribution system case in Guizhou is carried out, and results verify the effectiveness and practicability of the proposed method.