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Comprehensive Compensation Method for Co-phase Power Supply in Electrified Railways Based on V/v Transformer and Single-phase Rotating Var Compensator
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  • Xiangwu Yan,
  • Weilin Wu,
  • Chen Shao,
  • Weifeng Peng
Xiangwu Yan
North China Electric Power University - Baoding Campus
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Weilin Wu
North China Electric Power University - Baoding Campus

Corresponding Author:wuweilin0104@163.com

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Chen Shao
North China Electric Power University - Baoding Campus
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Weifeng Peng
North China Electric Power University - Baoding Campus
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Abstract

To solve the problem of negative-sequence and reactive power in electrified railway, this paper proposes a comprehensive compensation method based on V/v transformers and electromagnetic single-phase var compensator (ESVC) for co-phase power supply. First, based on the principles of static var generator (SVG) and single-phase rotary phase shifting transformer (SRPST), the topology and model of ESVC have been established, and the compensation mechanism has been analyzed. Second, the topological structure and mathematical model of co-phase power comprehensive compensation device (CPCD) are put forward based on the principles of V/v transformers and ESVC, and the operation mode of CPCD in multiple scenarios is designed. Then the strategy of CPCD with double closed loop control is analyzed: corresponding compensation mode is selected according to negative-sequence unbalance degree and expected power factor value. In this strategy, the compensated current output by ESVC is taken as the quantity of external loop control, and the rotation angle of ESVC is taken as the quantity of internal loop control to realize double-closed loop control of CPCD. Finally, the comprehensive CPCD compensation model is built on the simulation platform and validated the accuracy of the mathematical model and the effectiveness of the control strategy.
Submitted to IET Generation, Transmission & Distribution
04 Feb 2024Review(s) Completed, Editorial Evaluation Pending
08 Feb 2024Editorial Decision: Revise Major
04 Mar 20241st Revision Received
10 Apr 2024Review(s) Completed, Editorial Evaluation Pending
31 May 20242nd Revision Received
04 Jun 2024Submission Checks Completed
04 Jun 2024Assigned to Editor
04 Jun 2024Reviewer(s) Assigned
31 Jul 2024Review(s) Completed, Editorial Evaluation Pending
10 Aug 2024Editorial Decision: Accept