引用本文: | 巨云涛,林毅,王晶,葛夫超.考虑分布式电源详细模型的配电网多相状态估计[J].电力系统保护与控制,2016,44(23):147-152.[点击复制] |
JU Yuntao,LIN Yi,WANG Jing,GE Fuchao.Multi-phase distribution state estimation considering detailed models of distributed generators[J].Power System Protection and Control,2016,44(23):147-152[点击复制] |
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摘要: |
在传统配电网状态估计中,主要考虑拓扑约束和线性阻抗元件约束。在大量分布式电源接入配电网后,关于负序和零序的控制也相应增加。对于三相不平衡的状态估计,除了线性阻抗元件约束外,还要考虑分布式电源对不平衡分量即负序和零序的约束方程。因此,首先建立了常见的分布式电源在状态估计中的模型,然后提出了基于改进节点法的配电网多相状态估计方法,最后通过算例分析考虑与不考虑分布式电源的模型对状态估计结果的影响。 |
关键词: 主动配电网 多相状态估计 分布式电源 改进节点法 |
DOI:10.7667/PSPC152086 |
投稿时间:2015-11-30修订日期:2016-07-26 |
基金项目:国网福建省电力有限公司经济技术研究院科技项目(SGFJJY00GHWT1600081) |
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Multi-phase distribution state estimation considering detailed models of distributed generators |
JU Yuntao,LIN Yi,WANG Jing,GE Fuchao |
(College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China ;Electric Power Research Institute of Fujian Electric Power Limited Company, Fuzhou 350012, China ;China Electric Power Research Institute, Beijing 100192, China) |
Abstract: |
Traditional distribution state estimation only contains topological constraints and linear impedance branch constraints. With distributed generators (DGs) penetrating into distribution network, lots of negative and zero sequence control equations exist. For unbalance state estimation, there are zero and negative sequence constraints except linear branch constraints. The three-phase distributed generators’ models in state estimation are firstly proposed. And then a state estimation method based on modified nodal analysis is proposed and numerical tests’ results show the difference between considering and not considering distributed generators’ models. |
Key words: active distribution network multi-phase state estimation distributed generators modified nodal analysis |