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Development of SF 6 Gas‐Insulated Disconnecting Switch with Spiral Electrodes Using Motor Operating Mechanism
Author(s) -
Kato Tatsuro,
Rokunohe Toshiaki,
Yamane Yuichiro,
Yamamoto Naoyuki
Publication year - 2012
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.21147
Subject(s) - switchgear , circuit breaker , current (fluid) , electrical engineering , arc (geometry) , spiral (railway) , electrode , electric arc , reliability (semiconductor) , engineering , mechanical engineering , materials science , automotive engineering , physics , power (physics) , quantum mechanics
Gas‐insulated switchgear (GIS) requires reliability and economic efficiency. Circuit breakers, disconnecting switches (DS), and earthing switches have been designed to be more compact. DS requires performance in terms of insulation and current interruption. The bus‐transfer current is the highest among all current interruption requirements for the DS. To develop an alternating current DS driven at a lower speed, it is necessary to reduce the electrode damage. This paper describes the fundamental characteristics of current interruption in a magnetically driven arc using a spiral electrode. Since the arc is rotated by magnetically driven force, the arcing time in the spiral electrode is shortened to about one‐third compared with that of a plain breaker electrode. The DS using a magnetically driven arc was confirmed to comply with the bus‐transfer current switching requirements in the JEC standard. Moreover, a physical model of the magnetic driven arc was constructed, and the behavior of the arc was evaluated quantitatively. As a result, performance of current interruption could be predicted. © 2012 Wiley Periodicals, Inc. Electr Eng Jpn, 179(3): 31–39, 2012; Published online in Wiley Online Library ( wileyonlinelibrary.com ). DOI 10.1002/eej.21147