Investigation of a power network quality comprehensive control device based on novel cascaded power units,International Transactions on Electrical Energy Systems

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Investigation of a power network quality comprehensive control device based on novel cascaded power units
International Transactions on Electrical Energy Systems ( IF 1.9 ) Pub Date : 2020-10-05 , DOI: 10.1002/2050-7038.12651
Chengkuan Wan _{1,

2} , Jianxiao Zou ₁ , Hao Tang ₁ , Qiang Zhang ₂ , Tao Wang ₃

Affiliation

Power quality control device can solve most problems in power grid. However, there are still many problems with traditional single‐function power quality control devices, such as enormous capital investment, high operational costs, difficulty in coordination of control, and failure to achieve a technical and economic optimization. This article proposes a power quality comprehensive control device with a new topological structure and control method. It can provide a new level of comprehensive power quality control in medium‐voltage and high‐capacity applications. Firstly, the topology and working principle of the novel comprehensive power quality control device based on cascaded H‐bridge converter are analyzed, and the key parameters of the device are designed in detail. Secondly, a multi‐functional coordinated control strategy is proposed to control the power quality comprehensive control device. Both the accuracy of parameter and the effectiveness of coordinated control strategy are validated by MATLAB/Simulink simulation results. Finally, a power quality comprehensive control device with 10 kV/1MVA was developed. The experimental results show that the device can achieve power quality comprehensive control functions for 10 kV distribution network, including voltage sag, flicker, harmonics, phase imbalance, and frequency deviation.

中文翻译：

基于新型级联机组的电网质量综合控制装置的研究

电能质量控制装置可以解决电网中的大多数问题。但是，传统的单功能电能质量控制设备仍然存在许多问题，例如巨大的资金投入，较高的运营成本，控制协调困难以及无法实现技术和经济优化。本文提出了一种具有新的拓扑结构和控制方法的电能质量综合控制装置。在中压和大容量应用中，它可以提供更高水平的全面电能质量控制。首先，分析了基于级联H桥变换器的新型综合电能质量控制装置的拓扑结构和工作原理，并详细设计了该装置的关键参数。其次，提出了一种多功能协调控制策略来控制电能质量综合控制装置。MATLAB / Simulink仿真结果验证了参数的准确性和协调控制策略的有效性。最后，开发了一种功率质量综合控制装置，其电压为10 kV / 1MVA。实验结果表明，该设备可以实现10 kV配电网的电能质量综合控制功能，包括电压骤降，闪烁，谐波，相位不平衡和频率偏差。

更新日期：2020-12-07

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