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

Baichao Chen, Wenli Fei, Cuihua Tian, Lingang Yang and Jianwei Gu
Additional contact information
Baichao Chen: School of Electrical Engineering, Wuhan University, No. 299, Bayi Street, Wuchang District, Wuhan 430072, China
Wenli Fei: School of Electrical Engineering, Wuhan University, No. 299, Bayi Street, Wuchang District, Wuhan 430072, China
Cuihua Tian: School of Electrical Engineering, Wuhan University, No. 299, Bayi Street, Wuchang District, Wuhan 430072, China
Lingang Yang: New Energy Engineering Institute, Huadong Engineering Corporation Limited, No. 201, Gaojiao Road, Hangzhou 311122, China
Jianwei Gu: Operation Maintenance Department, Huaneng Jiangsu Clean Energy Branch, No. 239, Zhongshan Road, Nanjing 210008, China

Energies, 2018, vol. 11, issue 4, 1-18

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.

Keywords: “Sen” transformer; high-voltage “Sen” transformer; phase shift; power flow control; power transmission control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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