摘要
从支路功率传输模型出发,将节点注入系统功率分为2部分:一部分作为节点向系统负荷传输功率时产生的损耗,并将这部分损耗用系统网损表示;另一部分作为该节点向系统负荷提供的功率。将网损变量引入节点功率方程得到扩展功率方程,然后对扩展后的雅可比矩阵求逆,进而求得节点网损微增率。该算法的计算结果不受平衡节点位置影响,并且可求得包括平衡节点在内的系统各节点注入有功功率和无功功率的网损微增率。算例结果验证了所提方法的有效性。
On the basis of branch power transmission model, the power injected from nodes into power system is divided into two parts： one is regarded as the loss that occurs when the power is transferred from the node to the system and is expressed in network loss, and the other is regarded as the power supplied from the node to the network. Leading network loss variable into nodal power equations, the extended power equations are obtained; then the inversion of the extended Jacobian matrix is performed to obtain nodal incremental network loss. Calculation results of the proposed algorithm are not affected by the location of slack node, and the incremental network loss of active and reactive power injected from nodes, including the slack node, into power system can be solved. The effectiveness of the proposed algorithm is verified by calculation examples.
出处
《电网技术》
EI
CSCD
北大核心
2012年第6期148-151,共4页
Power System Technology
关键词
雅可比矩阵
网损微增率
潮流
功率方程
Jacobian matrix
incremental network loss
power flow
power equations
