Title: Research on power quality comprehensive control device under the situation of medium voltage and high power based on H-bridge cascade converter

Authors: Zhiqiang Zhou; Yu Shen; Chengkuan Wan; Wei Hu; Tao Wang; Hao Tang

Addresses: Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China ' Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China ' Chengdu Star-river Technology Industry Co., Ltd., Chengdu 610041, China; School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China ' Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China ' Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China ' School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China

Abstract: This paper proposes a power quality control device based on H-Bridge cascade converter, to solve the problems in current decentralised power quality control, such as huge investment in equipment, expensive operation and maintenance cost, hard to coordinate, and low global technical-economic ratio. It provides a novel for the comprehensive management of power quality in distribution networks. This paper has three parts. In the first part, the topology structure and working principle of the power quality comprehensive control device based on H-Bridge cascade converter are analysed, and its key parameters are analysed and designed. In the second part, corresponding coordinated control strategy is proposed according to the function of power quality comprehensive control device. Finally, a 10kV/1MVA medium-voltage and high-power power quality comprehensive control device is designed. The simulation through MATLAB Simulink proves that the parameter design is correct and the coordinated control strategy is effective.

Keywords: comprehensive control of power quality; coordinated control strategy; H-bridge cascade converter; parameter design.

DOI: 10.1504/IJPELEC.2022.122400

International Journal of Power Electronics, 2022 Vol.15 No.3/4, pp.548 - 569

Received: 01 Jan 2019
Accepted: 12 Jun 2019

Published online: 25 Apr 2022 *

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