Results 221 to 230 of about 1,175 (265)

Arc Energy in High Voltage Circuit Breakers

Arabian Journal for Science and Engineering, 2012
This work is devoted to the study of the energy balance at the opening of an SF6 circuit breaker. A new model is proposed to simulate the thermal exchanges involved around the current zero as a function of time. The theoretical basis of this model consists of the coupling of the electric and thermal equations of the arc plasma, which takes into account
A. Ziani, H. Moulai
openaire   +1 more source

A high-capacity high-voltage three-cycle oil circuit breaker

Electrical Engineering, 1945
POWER-system designers and operating engineers quite properly are constantly endeavoring to improve the quality of their services. Increases in connected capacity inevitably accentuate the demand for reducing both the frequency and the duration of interruptions in the flow of power. This is particularly true in the case of high-voltage lines which form
H. L. Byrd, E. B. Rietz
openaire   +1 more source

A New Artificial Line for Testing High-Voltage Circuit Breakers

IEEE Power Engineering Review, 1983
In a high-power laboratory, artificial lines are used for short-line fault testing on high-voltage circuit breakers. Over the years, several different configurations of artificial lines have been designed and used in testing laboratories. This article describes an artificial line for testing circuit breakers with current ratings up to 100 kArms.
W.a. Der Linden, L. Der Sluis
openaire   +1 more source

Radiometric Timing of High-Voltage Circuit-Breaker Opening Operations

IEEE Transactions on Power Delivery, 2011
This paper demonstrates the feasibility of radiometric on-line circuit breaker timing. The timing test is crucial and can reveal a wide range of faults or defects. The work presented concentrates on the timing of gas-insulated substation (GIS) circuit breakers, which due to their enclosed nature pose a variety of challenges not encountered in air ...
Meier, S. D., Moore, P. J., Coventry, P. F.   +2 more
openaire   +3 more sources

High-voltage oil circuit breakers for rapid reclosing duty

Electrical Engineering, 1944
Experience has shown that high-speed reclosing of circuit breakers on high-voltage transmission lines is of considerable value in maintaining system stability and continuity of service. This paper describes a new line of outdoor oil circuit breakers and the special design features which make them suitable for 20- and 35-cycle reclosing duty at voltages
A. W. Hill, W. M. Leeds
openaire   +1 more source

High-Voltage SF6 Circuit Breaker Maintenance

Nowadays, the need for uninterrupted power supply is greater than ever. One of the most effective ways to ensure an uninterrupted supply of electricity is the correct selection of the method and interval of maintenance of elements in a high-voltage substation.
Luka Soldo, Goran Knežević, Mario Zovko   +2 more
openaire   +1 more source

Electrical Life Assessment of the Low-Voltage Circuit Breaker (LVCB) Considering Arc Voltage

Energies, 2022
Zhengjun Liu
exaly  

High-voltage oil circuit breakers for transmission networks

Journal of the A.I.E.E., 1927
Roy Wilkins, E. A. Crellin
openaire   +1 more source

Electronic MOV-Based Voltage Clamping Circuit for DC Solid-State Circuit Breaker Applications

IEEE Transactions on Power Electronics, 2022
Lakshmi Ravi, Dehao Qin, Dong Dong
exaly  

An Online Non-Invasive Condition Assessment Method of Outdoor High-Voltage SF6 Circuit Breaker

Machines, 2023
Germano Lambert-Torres, Isac Areias, Erik Leandro Bonaldi   +2 more
exaly