Title: A novel protection and control strategy for high-voltage power frequency control system

Authors: Xiong Qing; Zhang Zhe; Yin Xianggen

Addresses: Electric Power Security and High Efficient Lab, Huazhong University of Science and Technology, Wuhan Hubei 430074, China. ' Electric Power Security and High Efficient Lab, Huazhong University of Science and Technology, Wuhan Hubei 430074, China. ' Electric Power Security and High Efficient Lab, Huazhong University of Science and Technology, Wuhan Hubei 430074, China

Abstract: The complicated structure and high power density make the protection and control of high voltage power frequency control system difficult. This paper proposed the novel protection and control strategy covered different parts of the system. Taking advantage of microprocessor protection system realised the system-level protection covered the fault of rectifier input, DC link, inverter output and even the induction motor. Improve the main circuit to strengthen security and stability in device level. The paper also analysed the cooperation of the protective trip and PWM pulse blocking and validated the feasibility of dual breaker setting to restrain feedback energy.

Keywords: high-voltage power frequency systems; microprocessor protection; neutral point clamp; three level; PWM pulse blocking; dual breaker setting; system control; system protection.

DOI: 10.1504/IJCAT.2011.045819

International Journal of Computer Applications in Technology, 2011 Vol.42 No.4, pp.285 - 293

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 09 Mar 2012 *

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