基于支路复功率表达式的网损微增率计算方法

首先由支路复功率表达式得出节点电压与支路功率损耗之间的关系,结合潮流计算的雅克比矩阵,得到支路功率损耗与节点注入功率之间的灵敏度关系,然后根据网损的定义求得各节点的网损微增率。该算法与转置雅克比矩阵法相比,不但能同时给出节点注入有功、无功的网损微增率,而且能得到节点注入功率与支路功率损耗之间的关系,为分析和调整系统运行状态提供了一种方法。

Computation of incremental transmission loss based on expression of branch complex power

The sensitivity relationship between the power loss of branches and the injection power of nodes,can be derived from the Jacobian matrix combined with the related functions of node voltage and branch power loss obtained from the branch complex power expression.Then incremental transmission loss can be calculated according to the definition of network loss.Compared with the transpose Jacobian matrix method,the proposed algorithm not only can give out the incremental transmission loss,but also can reveal the relationship between branch powe and node injection power,providing a method for analyzing and adjusting the operation state.