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首页> 外文期刊>Electric power systems research >A three-phase algorithm for state estimation in power distribution feeders based on the powers summation load flow method
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A three-phase algorithm for state estimation in power distribution feeders based on the powers summation load flow method

机译：基于功率求和潮流的三相配电网状态估计算法

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State estimation approaches for use in transmission systems are common in the literature, however, there are few algorithms intended for distribution systems. This occurs, mainly, due to the small amount of measurement data available in real time and topological complexity of these systems. In this context, this paper proposes a new three-phase state estimation algorithm for radial distribution feeders, which is based on adjustment of loads from a dynamic utilization and imbalance factors, in order to model pseudo-measurements of powers, and take into account the imbalance of loads, frequently presents in feeders. The method performs the estimation by section, starting from the substation toward the loads, where estimated quantities in a section are used as pseudo-measurements to estimate the subsequent section. This procedure provides a computational optimization for real-time methodology presented here. Tests were performed in distribution feeders from a Brazilian power company and the results show satisfactory performance of developed state estimator in respect to adjustment of estimated values compared with corresponding real-time measured quantities. (C) 2015 Elsevier B.V. All rights reserved.
机译：用于传输系统的状态估计方法在文献中很常见，但是，很少有针对配电系统的算法。发生这种情况的主要原因是实时可用的少量测量数据以及这些系统的拓扑复杂性。在这种情况下，本文提出了一种新的径向分布馈线三相状态估计算法，该算法基于动态利用率和不平衡因素对负载的调整，以对功率的伪测量建模，并考虑到负载不平衡，经常出现在馈线中。该方法从变电站到负载开始按部分执行估计，其中将部分中的估计数量用作伪测量以估计后续部分。此过程为此处介绍的实时方法提供了计算优化。在一家巴西电力公司的配电馈线中进行了测试，结果表明，与相应的实时测量数量相比，发达的状态估算器在调整估算值方面表现令人满意。 （C）2015 Elsevier B.V.保留所有权利。

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