DC current interruption in HVDC SF6 gas MRTB by means of self-excited oscillation superimposition

被引：57

作者：

Nakao, H

Nakagoshi, Y

Hatano, M

Koshizuka, T

Nishiwaki, S

Kobayashi, A

Murao, T

Yanabu, S

机构：

[1] Kansai Elect Power Co Inc, Large Power Transmiss Team, Head Off, Osaka, Japan

[2] Shikoku Elect Power Co Inc, Bridge & Bay Syst Project Team, Power Div, Takamatsu, Kagawa, Japan

[3] Elect Power Dev Co Ltd, Substn & HVDC Engn Grp, EPDC, Tokyo, Japan

[4] Toshiba Co Ltd, Highvoltage Switchgear Dept, Hamakawasaki Works, Kawasaki, Kanagawa 210, Japan

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2001年 / 16卷 / 04期

关键词：

arc voltage; d.c. circuit breaker; HVDC transmission; Mayr-type dynamic arc equation; MRTB; self-excited oscillation; SF6 gas circuit breaker;

D O I：

10.1109/61.956757

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 [电气工程]; 0809 [电子科学与技术];

摘要：

The Kii-Channel HVDC Link under construction in Japan is equipped with metallic return transfer breakers (MRTBs) in one converter station. A new MRTB for an interrupting current of 3500 A d.c. was developed. To interrupt a d.c. current, a method that produces a current zero point by superimposing a self-excited oscillatory current on a d.c. arc current was employed. For this purpose, a LC circuit was coupled in parallel to a SF6 gas circuit breaker. Developing a SF6 gas circuit breaker that has a large arc voltage drop gradient against currents permitted a large oscillatory current to be generated. A modified Mayr-type dynamic arc equation was newly presented. The d.c. interruption limits calculated using this equation agreed with the measured values.

引用

页码：687 / 693

页数：7

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