一种配电网理论线损计算的改进算法  

Improved Method for Theoretical Line Loss Calculation of Distribution Network

作　　者：温建春[1] 韩学山[1] 张利[1] 

机构地区：[1]山东大学电气工程学院,济南250061

出　　处：《电力系统及其自动化学报》2008年第4期72-76,共5页Proceedings of the CSU-EPSA

摘　　要：配电网线损计算是配电管理和运行的一项重要任务,针对当前配电网负荷数据实时获取和非实时获取混合使线损计算困难的问题,提出了基于节点等效功率与匹配潮流的线损计算模型。按照节点等效功率的原则,将面向时间过程的能量损耗问题转化为时间断面上的功率损耗问题,实现全天线损的快速估计。通过容量系数与电量系数的加权值作为分配因子获取系统非实测节点的等效功率,借助匹配潮流的思想,在迭代过程中对非实时量测负荷节点的等效功率进行修正,以达到与实时量测数据的严格匹配,提高线损计算精度。算例计算分析表明,该方法简捷有效,能够满足工程上对线损计算的精度要求。Energy losses calculation is an important assignment for management and operation of distribution networks. According to the difficulty caused by the mixture of real-time and non-real-time load obtaining, a conception based on nodal equivalent power and matching power flow is presented in this paper. In the light of nodal equivalent power principle, the energy losses are solved as power losses. The load distribution factors are calculated by capacity factor and energy consumption factor. With the aid of matching power flow, the non-real-time load data is modified during the iteration in order to match the real-time data and increase the precision of loss calculation. Case study shows that this method is practical and efficient for distribution networks, and can satisfy the precision request in the engineering application.

关 键 词：理论线损 节点等效注入功率 匹配潮流 电量系数 容量系数 配变测控终端 馈线测控终端 

分 类 号：TM744[电气工程—电力系统及自动化]