Identification of unbalanced power in a three-phase three-wire power system under linear loading

2022 IEEE 8th International Conference on Energy Smart Systems (ESS) Pub Date : 2022-10-12 DOI:10.1109/ESS57819.2022.9969240

M. Artemenko, Y. Kutafin, Ivan Shapoval, V. Chopyk, V. Mykhalskyi, S. Polishchuk

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引用次数: 1

Abstract

In the paper, two orthogonal components of unbalanced power in the three-phase three-wire power supply system were introduced to simplify the distributed filtration control. Integral formulas are obtained to determine the applied unbalanced power components, making it possible to record their contribution to the deterioration of electrical energy quality. The relationship between power unbalance components and the linear unbalanced load parameters was established to verify the above-mentioned integral formulas by computer experiment. Experimental studies show complete coincidence of the measured power points with the curves of the calculated dependences. It has been found that with given source symmetric voltages, the three-phase sinusoidal process of the unbalanced load is fully identified by four scalar values: active and reactive powers and applied orthogonal components of the unbalance power. These scalar variables can be used to synthesize control signals for distributed active filters of intelligent local power grids.

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线性负载下三相三线制电力系统不平衡功率的辨识

本文引入三相三线制供电系统中不平衡功率的两个正交分量，简化了分布式滤波控制。得到积分公式，确定所施加的不平衡功率分量，从而可以记录它们对电能质量恶化的贡献。建立了功率不平衡分量与线性不平衡负载参数的关系，通过计算机实验验证了上述积分公式。实验研究表明，实测功率点与计算依赖曲线完全吻合。研究发现，在给定电源对称电压的情况下，不平衡负载的三相正弦过程可以用四个标量值:有功功率和无功功率以及施加的不平衡功率正交分量来完全识别。这些标量变量可以用来合成局部智能电网分布式有源滤波器的控制信号。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 IEEE 8th International Conference on Energy Smart Systems (ESS)

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