Evaluation of Thermal Interruption Capability in SF6 Gas Circuit Breakers with Re-ignition Voltage and its Application to Experimental Design

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2012/05/01

タイトル(英語): Evaluation of Thermal Interruption Capability in SF6 Gas Circuit Breakers with Re-ignition Voltage and its Application to Experimental Design

著者名: Hajime Urai (Hitachi Research Laboratory, Hitachi, Ltd.), Youichi Ooshita (Hitachi Research Laboratory, Hitachi, Ltd.), Makoto Koizumi (Hitachi Research Laboratory, Hitachi, Ltd.), Masanori Tsukushi (Japan AE Power Systems Corporation)

著者名(英語): Hajime Urai (Hitachi Research Laboratory, Hitachi, Ltd.), Youichi Ooshita (Hitachi Research Laboratory, Hitachi, Ltd.), Makoto Koizumi (Hitachi Research Laboratory, Hitachi, Ltd.), Masanori Tsukushi (Japan AE Power Systems Corporation)

キーワード: high-voltage circuit breaker，current zero measurement，current interruption，short line fault，Taguchi method，re-ignition voltage

要約(英語): Thermal interruption characteristics of SF6 gas circuit breakers were investigated by voltage measurements around current zero. We found that re-ignition peak voltage in the case of an interruption failure could effectively indicate the thermal interruption capability. The efficiency of interruption to puffer pressure could also be evaluated by analyzing the dependency of re-ignition peak voltage on puffer pressure. This technique was applied to experimental design based on the Taguchi method. We successfully optimized the balance of the puffer pressure build-up performance and thermal interruption efficiency to puffer pressure. Finally we demonstrated that a small size research circuit breaker with self-blast interrupter was able to successfully clear the 90% short line fault interruption duty corresponding to 50kA rating in the thermal interruption region.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.132 No.5 （2012） 特集：電力・エネルギー分野を支える変電技術の新展開

本誌掲載ページ: 407-414 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/132/5/132_5_407/_article/-char/ja/