Influence of VFT on shell-type transformer

被引：9

作者：

Fujita, Shigeto ^{[1
]}

Shibuya, Yoshikazu

Ishii, Masaru

机构：

[1] Mitsubishi Electr Corp, Power Device Works, Fukuoka 8190192, Japan

[2] Shibaura Inst Technol, Dept Elect Engn, Tokyo 1358548, Japan

[3] Univ Tokyo, Inst Ind Sci, Tokyo 1538505, Japan

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2007年 / 22卷 / 01期

关键词：

gas-insulated switchgear (GIS); transformer; very fast transient; voltage oscillation;

D O I：

10.1109/TPWRD.2006.881430

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

When a disconnecting switch in a gas insulated switchgear (GIS) operates, a high frequency oscillating surge called very fast transient (VFT) is generated. The VFT may set off overvoltage in a transformer winding.,In the paper the authors evaluate the influence of VFT on a shell-type transformer. To simulate waveforms of VFT invading a transformer, a simple equivalent circuit for a shell-type transformer in a high frequency range is derived experimentally. Using this model the overvoltage waveforms are analyzed for various configurations of GIS. Then, the influence of VFT on a 500 kV shell-type transformer winding is investigated. The results lead to a conclusion that VFT does not threaten the reliability of insulation of the transformer winding.

引用

页码：217 / 222

页数：6

共 10 条

[1] DISCONNECT SWITCH INDUCED TRANSIENTS AND TRAPPED CHARGE IN GAS-INSULATED SUBSTATIONS [J].

BOGGS, SA ;

CHU, FY ;

FUJIMOTO, N ;

KRENICKY, A ;

PLESSL, A ;

SCHLICHT, D .

IEEE TRANSACTIONS ON POWER APPARATUS AND SYSTEMS, 1982, 101 (10) :3593-3602

[2]

*CIGRE, 1988, 331909 CIGRE

[3] Experimental investigation of high frequency voltage oscillation in transformer windings [J].

Fujita, S ;

Hosokawa, N ;

Shibuya, Y .

IEEE TRANSACTIONS ON POWER DELIVERY, 1998, 13 (04) :1201-1207

[4]

Fujita S., 2000, Transactions of the Institute of Electrical Engineers of Japan, Part B, V120-B, P766

[5]

Fujita S. F., 2004, Transactions of the Institute of Electrical Engineers of Japan, Part B, V124-B, P612, DOI 10.1541/ieejpes.124.612

[6]

GLINKOWSKI M, 2005, ELECTRA, P24

[7]

Ishikawa Y., 2002, Transactions of the Institute of Electrical Engineers of Japan, Part B, V122-B, P1068

[8] Analysis of very fast transients in transformers [J].

Shibuya, Y ;

Fujita, S ;

Tamaki, E .

IEE PROCEEDINGS-GENERATION TRANSMISSION AND DISTRIBUTION, 2001, 148 (05) :377-383

[9]

SHIBUYA Y, 1997, P I ELECT ENG GEN TR, V144, P461

[10]

SHIBUYA Y, 1997, P I ELECT ENG GEN TR, V146, P459

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