State estimation for unbalanced electric power distribution systems using AMI data
State estimation for unbalanced electric power distribution systems using AMI data
复制标题
使用 AMI 数据进行不平衡配电系统的状态估计
DOI：
10.1109/isgt.2017.8085999
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
N. Yu
中科院分区：
文献类型：
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作者：
Yuanqi Gao;N. Yu
由于配电网结构层次和传感器层次的复杂性，配电系统状态估计（DSSE）问题具有很大的挑战性。本文首先开发了一个类似于真实的世界设置DSSE制定。特别是，被认为是不平衡的单相和两相测量。此外，零注入和中心抽头变压器的约束条件进行了仔细建模。提出了一种基于正交消去法的DSSE算法来求解等式约束的非线性优化问题。该算法具有更好的数值性能比现有的方法，并不需要可调的参数。对改进的IEEE 13节点试验馈线的仿真结果表明，所提出的DSSE公式和算法产生准确的状态估计结果。
The distribution system state estimation (DSSE) problem is very challenging due to complexities at the distribution network structure level and sensor level. This paper first develops a DSSE formulation similar to the real world settings. In particular, unbalanced single-phase and two-phase measurements are considered. In addition, constraints associated with zero injections and center tapped transformers are carefully modeled. An orthogonal elimination based DSSE algorithm is developed to solve the nonlinear optimization problem with equality constraints. The proposed algorithm has better numerical properties than the existing methods and does not require tunable parameters. The simulation results from modified IEEE 13-bus test feeder show that the proposed DSSE formulation and algorithm yield accurate state estimation results.