Magnetic flux control in an urban distribution network based on load optimisation. Issue 2 (28th May 2021)

• Record Type: Journal Article
• Authors: Lei, He; Zheng, Xu; Sang, Zixia; Fang, Rengcun; Yan, Jiong; Wang, Yingxiang; Du, Zhi; Yang, Dongjun; Xu, Jingyou; Wu, Lei
• Is Part Of: Proceedings of the Institution of Civil Engineers. Volume 174:Issue 2(2021)
• Page Start: 49
• Page End: 56
• Publication Date: 2021-05-28
• Subjects: electrical engineering & distribution -- energy conservation -- power; Power (Mechanics) -- Periodicals; Power resources -- Periodicals; Energy industries -- Periodicals; Energy development -- Periodicals; 621.04205
• DOI: 10.1680/jener.19.00012
• Languages: English
• ISSNs: 1751-4223

Abstract

Abstract : This paper proposes a control method for eliminating direct current (DC) flux from the isolation transformer of a customer service device to avoid magnetic saturation. The method is characterised by injecting zero compensation voltage during a designed time. The period during which no compensation voltage is injected is minimised by adjusting the normal compensation time in the initial stage. For a customer service device, such as a dynamic voltage restorer, the reverse turn-off voltage will introduce extra initial flux. The calculation process based on a trigonometric function also takes into account the effects of the initial flux. The experimental results verify the proposed method to prevent DC flux to the isolation transformer.