NDLI: Optimization technique for electrical insulation design of vacuum interrupters

Content Provider	IEEE Xplore Digital Library
Author	Kato, K. Kaneko, S. Okabe, S. Okubo, H.
Copyright Year	1994
Abstract	Because of the excellent high insulation performance, vacuum is expected to be one of the alternatives of SF₆ gas. In order to reduce the use of SF₆ gas in substation equipment, the applicability of vacuum circuit breakers (VCB) and vacuum interrupters (VI) should be extended to higher (typically 145-300 kV) voltage. For the high voltage VI, the role of electrical insulation design becomes more important. For accurate insulation design of the VI, we developed an optimization technique to improve the electrical insulation performance. We evaluated several design variables necessary for optimizing the electrode contour of the main contactor and center shield in VI. The electrode area effect on vacuum breakdown characteristics as well as the electric field distribution was considered in the optimization process. In order to verify the accuracy and the efficiency of the proposed technique, we applied it to a practical model of VI. In addition, we examined the influence of the parameters of the area effect, arrangement of VI in VCB on the optimization result. From the calculation results, we confirmed that the optimization based on the area effect had higher availability and higher accuracy than the electric field optimization from the viewpoint of the improvement of the electrical insulation performance of vacuum insulated equipment.
Sponsorship	National Natural Science Foundation of China (NSFC) Region Centre Ville de Tours Conseil General D'Indre et Loire ABB IEEE Sandia National Laboratories TOSHIBA
File Size	1598909
File Format	PDF
ISSN	10709878
Volume Number	15
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Design optimization Dielectrics and electrical insulation Vacuum technology Interrupters Voltage Electrodes Vacuum breakdown Gas insulation Substations Circuit breakers center shield electrode Numerical optimization vacuum interrupter (VI) vacuum insulation area effect
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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