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A High-Voltage 'Sen' Transformer: Configuration, Principles, and Applications

Authors :
Baichao Chen
Wenli Fei
Cuihua Tian
Lingang Yang
Jianwei Gu
Source :
Energies, Vol 11, Iss 4, p 918 (2018)
Publication Year :
2018
Publisher :
MDPI AG, 2018.

Abstract

As is well known, the high installation and operational costs of the unified power flow controller (UPFC) restrict its widespread applications in power grid. An economical “Sen” transformer (ST) that is composed of a three-phase four-winding transformer and three sets of tap changers provides similar power flow control functionality as the UPFC. Unfortunately, the ST is not suitable for high-voltage systems because of its high-voltage insulation requirement on all secondary windings and tap changers. To overcome this problem, a high-voltage “Sen” transformer that consists of a three-phase two-winding transformer and two sets of tap changers is proposed in this paper. In high-voltage power system applications, the high-voltage “Sen” transformer (HVST) offers several advantages over the ST, such as fewer windings, fewer tap changers, bigger phase-shift range, and larger power flow control region. This paper focuses on the configuration, principles, and applications of the HVST. The contrastive simulation results in a two-area test system and an IEEE 39 bus system prove the validity and advantages of the proposed HVST. Moreover, a 10 kV HVST device and a corresponding experiment platform are developed to verify the feasibility and effectiveness of the HVST. The HVST can provide a flexible voltage and power flow control.

Details

Language :
English
ISSN :
19961073
Volume :
11
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Energies
Publication Type :
Academic Journal
Accession number :
edsdoj.7b1d9ae0b48430e93acebfbb6952e4d
Document Type :
article
Full Text :
https://doi.org/10.3390/en11040918