Optimizing the switching time for 400 kV SF6 circuit breakers
نویسندگان
چکیده
منابع مشابه
THESIS FOR THE DEGREE OF LICENTIATE OF ENGINEERING Controlled Switching of High Voltage SF6 Circuit Breakers for Fault Interruption
This thesis report describes an adaptive, self-checking algorithm for controlled short-circuit (fault) interruption in conjunction with high voltage alternating current SF6 circuitbreakers. The primary objective of controlled short-circuit interruption is to restrict the arcing time of the circuit-breaker to a nominal window (near the minimum arcing time) and thereby seek to reduce the electric...
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Very low temperatures stress a circuit breaker in a complex manner. Mixed-gas circuit breakers were developed for use at temperatures as low as -50C. These breakers utilize a gas mixture of SF6 and CF4 or SF6 and N2 to prevent condensation of the SF6 gas and have been type tested at -50C to ensure travel characteristics, operating times, and gas tightness are acceptably affected. Today’s mixed-...
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Abstract: In this work, a new method for calculating the parameters of electric arc model for SF6 power circuit breaker is proposed. The methodology consists in the optimization of a theoretical function with respect to a group of model parameters in order to achieve a better approximation to a set of experimental data. The theoretical function is an asymptotic solution of the equation for the ...
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During the switching on/off of shunt capacitor banks in substations, vacuum circuit breakers (VCBs) are required to switch off or to switch on the capacitive current. Therefore, the VCBs have to be operated under a harsh condition to ensure the reliability of the equipment. This study presents a complete comparison study of ordinary and phase-controlled VCBs on switching 10 kV shunt capacitor b...
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This paper describes the benefits of using controlled switching technology on medium voltage circuit breakers. Although this technology has been used on high voltage networks for over 30 years, recent technological advances have permitted the development of a new generation of controlled switching devices for medium voltage. This paper reviews controlled switching device approaches, describes m...
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ژورنال
عنوان ژورنال: IOP Conference Series: Materials Science and Engineering
سال: 2018
ISSN: 1757-8981,1757-899X
DOI: 10.1088/1757-899x/294/1/012010