| 基于扩展功率方程的网损微增率算法 |
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| 引用本文： | 常鲜戎,张亮平. 基于扩展功率方程的网损微增率算法[J]. 电网技术, 2012, 0(6): 148-151 |
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| 作者姓名： | 常鲜戎 张亮平 |
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| 作者单位： | 1. 华北电力大学电气与电子工程学院,河北省保定市071003
2. 成都电业局,四川省成都市610041 |
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| 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
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| 关 键 词： | 雅可比矩阵 网损微增率 潮流 功率方程 |
An Incremental Network Loss Algorithm Based on Extended Power Equations |
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| CHANG Xianrong,ZHANG Liangping. An Incremental Network Loss Algorithm Based on Extended Power Equations[J]. Power System Technology, 2012, 0(6): 148-151 |
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| Authors: | CHANG Xianrong ZHANG Liangping |
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| Affiliation: | 1.School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,Hebei Province,China; 2.Chengdu Electric Power Bureau,Chengdu 610041,Sichuan Province,China) |
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| Abstract: | 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. |
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| Keywords: | Jacobian matrix incremental network loss power flow power equations |
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