Proposed Transient Recovery Voltage Ratings for Power Circuit Breakers

Naef, Otto; Zimmerman, C. P.; Beehler, J. E.

doi:10.1109/tpas.1965.4766231

Cited by 28 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The moving contact is connected with the insulating pull rod outside the tank body, and the opening and closing movement of the circuit breaker contact is driven by the transmission device connected with the contact. Since the discharge or high-temperature arc between the arc contacts during the test will ablate the contacts, the dynamic and static arc contacts are made of copper-tungsten alloy materials in order to improve the burning resistance of the arc contacts of the circuit breaker and to meet the requirements for multiple tests at different spacings [34][35][36][37].…”

Section: Experimental Detailmentioning

confidence: 99%

Evolution of Elements on Electrode Surfaces in Gas-Insulated Systems under Electrical Heating

Sun

Zhang

et al. 2022

Coatings

View full text Add to dashboard Cite

Accidents always occur in gas-insulated switchgears (GIS) and gas-insulated lines (GIL) since filmed joint electrodes are produced when internal gases react with the electrode’s surface when there is a discharge or when internal electricals overheat. To solve the problem, this paper analyzed the evolution of elements on the contact electrode. The reaction of the SF6 and electrode’s surface under breakdown currents and overheating conditions was obtained, and the discharge time and discharge current effects upon the transfer of the element were proposed. It was found that the mobility of the F element on the electrode’s surface typically increases after electrical heating. The number of interruptions and short-circuit currents are important factors affecting the transfer of the F element to the electrode. The flashover current is the essential factor that accelerates the transfer of the F element to insulating materials. Frequent switching is a main factor that accelerates the transfer of the F element to the contact. It was also found that Al has little correlations with the breaking process, and metal fluorides become the main components on the electrode’s surface under discharge heating. The research provides a theoretical basis and data support for GIS/GIL surface optimization treatments and the improvement of fault detection methods.

show abstract

Section: Experimental Detailmentioning

confidence: 99%

Evolution of Elements on Electrode Surfaces in Gas-Insulated Systems under Electrical Heating

Sun

Zhang

et al. 2022

Coatings

View full text Add to dashboard Cite

show abstract

“…Naef used equivalent circuits composed of resistance, inductance and capacitor (RLC) circuit to study the characteristics of RRRV under a short circuit fault, SLF, and other typical faults in both single‐phase and three‐phase circuits [28]. The resistance Z t in Naef's models represents the surge impedance of the parallel transmission lines on the bus.…”

Section: Interruption Process Analysis With the New Fault Current Lim...mentioning

confidence: 99%

Analysis of influence of a novel inductive fault current limiter on the circuit breaker in 500 kV power system

et al. 2021

View full text Add to dashboard Cite

A contribution to the engineering application of a proposed 500-kV fault current limiter (FCL) is presented. A new type of FCL composed of a highly coupled split reactor (HCSR) and fast switches is proposed. When the circuit breaker (CB) in series with the FCL in the 500-kV power system interrupts the limited fault current, the rate of rise of the recovery voltage (RRRV) reaches a value much higher than the rated value. Based on a simplified equivalent single-phase circuit, the influence of the new FCL on the interruption procedure of the CB is simulated and discussed. The simulation results show that the high RRRV is caused by highfrequency resonant oscillations between the HCSR and its parasite capacitance. Analysis indicates that when the reactance of the FCL is close to the short circuit reactance of the system, the RRRV will reach the highest value. To solve this issue, we proposed installing a shunt capacitor with the FCL. Simulation results showed that the RRRVunder all fault modes could be restrained to below the rated value by introducing a certain shunt capacitor.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

show abstract

Evolution of Transient Recovery Voltages

2014

Current Interruption Transients Calculation

View full text Add to dashboard Cite

Proposed Transient Recovery Voltage Ratings for Power Circuit Breakers

Cited by 28 publications

References 17 publications

Evolution of Elements on Electrode Surfaces in Gas-Insulated Systems under Electrical Heating

Evolution of Elements on Electrode Surfaces in Gas-Insulated Systems under Electrical Heating

Analysis of influence of a novel inductive fault current limiter on the circuit breaker in 500 kV power system

Evolution of Transient Recovery Voltages

Contact Info

Product

Resources

About