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首页> 外文期刊>Electric power systems research >Harmonic state estimation for distribution networks using phasor measurement units
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Harmonic state estimation for distribution networks using phasor measurement units

机译：使用相量测量单元的配电网谐波状态估计

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This paper presents a novel approach for harmonic state estimation for unbalanced three-phase distribution systems using Phasor Measurement Units (PMUs), considering the presence of harmonic sources connected to the system. Harmonic branch currents in rectangular coordinates are the state variables to be estimated by the proposed methodology. Harmonic voltages and branch currents phasors are measured at monitored buses by PMUs. For the non-monitored buses, load pseudomeasurements are considered as inequality constraints in a proposed optimization problem solved via Safety Barrier Interior Point Method. The main contribution of the method is providing satisfactory estimation results considering non-fully observable power distribution networks with long feeders, requiring a small number of field measurements. Tests on the modified Baran and Wu's 33-bus test system are used to validate the methodology and demonstrate its effectiveness on evaluating power quality indexes, identifying harmonic sources and monitoring harmonic components and their propagation through the network. (C) 2017 Elsevier B.V. All rights reserved.
机译：考虑到存在连接到系统的谐波源，本文提出了一种使用相量测量单元（PMU）的不平衡三相配电系统谐波状态估计的新方法。直角坐标系中的谐波支路电流是要通过所提出的方法估计的状态变量。谐波电压和支路电流相量由PMU在受监控的总线上测量。对于非监控公交车，在通过安全栅内点法解决的拟议优化问题中，将负载伪测量视为不等式约束。该方法的主要贡献在于，考虑到带有长馈线的非完全可观察的配电网络，需要少量的现场测量，因此可以提供令人满意的估计结果。在改进的Baran和Wu的33总线测试系统上进行的测试用于验证该方法，并证明其在评估电能质量指标，识别谐波源以及监视谐波分量及其在网络中的传播方面的有效性。 （C）2017 Elsevier B.V.保留所有权利。

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