Dynamic interactions between a vacuum arc and circuit-breaker walls

2002 ◽  
Author(s):  
S.W. Rowe ◽  
M. Barrault
Keyword(s):  
Circuit Breaker ◽  
Vacuum Arc ◽  
Dynamic Interactions

scholarly journals Research on Vacuum Arc Commutation Characteristics of a Natural-Commutate Hybrid DC Circuit Breaker

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4823
Author(s):  
Dequan Wang ◽  
Minfu Liao ◽  
Rufan Wang ◽  
Tenghui Li ◽  
Jun Qiu ◽  
...  
Keyword(s):  
Solid State ◽  
Theoretical Analysis ◽  
Theoretical Foundation ◽  
Circuit Breaker ◽  
Vacuum Arc ◽  
Important Process ◽  
Mathematical Formula ◽  
Arc Voltage ◽  
Dc Circuit Breaker ◽  
Key Parameter

Vacuum arc commutation is an important process in natural-commutate hybrid direct current (DC) circuit breaker (NHCB) interruption, as the duration of vacuum arc commutation will directly affect the arcing time and interrupting time of NHCB. In this paper, the vacuum arc commutation model of NHCB was established by simplifying solid-state switch (SS) and vacuum arc voltage. Through theoretical analysis and experiments, the vacuum arc commutation characteristics of NHCB were studied. The mathematical formula of the effect of main parameters on the duration of vacuum arc commutation is obtained, and the changing law of the influence of the main parameters on the duration of the vacuum arc commutation is explored. The concept of vacuum arc commutation coefficient is proposed, and it is a key parameter that influences the vacuum arc commutation characteristics. The research on the characteristics of vacuum arc commutation can provide theoretical foundation for the structure and parameter optimization of NHCB and other equipment that uses vacuum arc commutation.

Extraction of the Geometric Features from the Vacuum Switching Arc Images

2013 ◽  
Vol 333-335 ◽  
pp. 860-863
Author(s):  
Hua Jun Dong ◽  
Wen Liang Dong ◽  
Kai Kang ◽  
Dao Shun Wang
Keyword(s):  
Power System ◽  
High Speed ◽  
Circuit Breaker ◽  
Morphological Characteristics ◽  
Vacuum Arc ◽  
Cmos Camera ◽  
Camera System ◽  
Vacuum Switch ◽  
Vacuum Circuit Breaker ◽  
Critical Components

Vacuum circuit breaker is one of the major critical components that controls and protects the power system. The breaking capability of the vacuum switch directly affects the safety of the power system. However, the breaking capability of the vacuum switch is determined by the morphological characteristics of the vacuum arc images. In this paper, in order to research the variation of the vacuum arc, a high-speed CMOS camera system is used to collect the vacuum arc images within a short gap (7mm), the morphological characteristics of the vacuum arc images are extracted based on the digital image processing. At last, the variation of the arc is analyzed.

Study of vacuum arc plasma transport characteristics during the DC interrupting process

2022 ◽  
Author(s):  
Xiaolong Huang ◽  
Tao Sun ◽  
Yuezheng Wu ◽  
Shangyu Yang ◽  
Lihua Zhao ◽  
...  
Keyword(s):  
Circuit Breaker ◽  
Plasma Transport ◽  
Vacuum Arc ◽  
Ion Temperature ◽  
Ion Density ◽  
Transient Characteristics ◽  
Vacuum Circuit Breaker ◽  
Key Factor ◽  
The Moment ◽  
Current Drop

Abstract The mechanical DC vacuum circuit breaker based on forced-over-zero technology will inevitably generate vacuum arc during the actual interrupting process. Since the current drop frequency is usually very high, the vacuum arc usually exhibits obvious transient characteristics, and the excessive transient characteristics may even become a key factor limiting the interruption capacity. In order to improve the mechanical DC vacuum circuit breaker arc interrupting capability, this paper establishes a vacuum arc transient magneto-hydrodynamic simulation model in the DC interrupting process and studies the plasma transport characteristics of the vacuum arc under different DC interrupting conditions. The results show that the ion pressure, ion density and ion temperature decrease with decreasing arc current, while the ion velocity gradually increases during the DC interrupting process. The increase in breaking current and current drop frequency will increase the ion density in the arc column at the moment of current crossing zero, resulting in more difficult vacuum arc interrupting. The results of the study can provide an important theoretical basis for a deeper understanding of the vacuum arc transient process in the DC interrupting process and improve the DC vacuum circuit breaker arc interruption capability.

Basic investigation of a high-speed vacuum circuit breaker and its vacuum arc characteristics

2006 ◽  
Vol 153 (1) ◽  
pp. 11 ◽  
Author(s):  
Y. Niwa ◽  
T. Funahashi ◽  
K. Yokokura ◽  
J. Matsuzaki ◽  
M. Homma ◽  
...  
Keyword(s):  
High Speed ◽  
Circuit Breaker ◽  
Vacuum Arc ◽  
Vacuum Circuit Breaker ◽  
Arc Characteristics ◽  
Basic Investigation

Development of the Vacuum Arc Chute for a 110 kV Single-Break Vacuum Circuit Breaker

2021 ◽  
Vol 4 (4) ◽  
pp. 58-64
Author(s):  
Valery A. LAVRINOVICH ◽  
◽  
Alexey A. PERTSEV ◽  
Lidiya A. Ryl’skaya ◽  
◽  
...  
Keyword(s):  
Circuit Breaker ◽  
Electric Strength ◽  
Vacuum Arc ◽  
Circuit Breakers ◽  
Metallic Contact ◽  
Vacuum Circuit Breaker ◽  
Capacitive Load ◽  
In Series ◽  
Shielding System ◽  
Single Break

Requirements for high-voltage vacuum circuit breakers for networks with a grounded neutral, which are stemming from the prospects of using vacuum circuit breakers in networks with the solidly grounded neutral are formulated. The arch chute design for a 110 kV single-break vacuum circuit breaker that takes into account the occurrence of repeated breakdowns is developed. The shielding system equalizes the voltage over the chute casing, decreases the electric field intensity at the “triple point”, protects the casing dielectric from becoming dusted with metallic contact parts erosion products, prevents the occurrence of cascade breakdown between the contact parts and central shield, and eliminates a possible decrease of the chute electric strength as it gradually works out its switching life. It is shown that the chute design includes measures to prevent the possibility of repeated breakdowns during disconnection up to class С1 according to GOST 52565-2006. It has been proven that for vacuum arc chutes for class С2 (for switching a capacitive load) it is necessary to develop a chute with two breaks between the contact parts or to connect two vacuum chutes in series. The shielding system adopted in the chute rules out the possibility of ceramic casing to become metallized, which decreases the chute electric strength as it gradually works out its switching life, and the vacuum arc transfer to beyond the inter-contact gap boundaries onto the central shield, the burnout of which results in that the vacuum arc chute loses its tightness and fully loses its functional properties.

A model-based measurement method for intelligent circuit breaker with data communication

2017 ◽  
Vol 40 (6) ◽  
pp. 1854-1862 ◽  
Author(s):  
Zhiheng Liu ◽  
Xiongying Duan ◽  
Minfu Liao ◽  
Guowei Ge ◽  
Jiyan Zou
Keyword(s):  
Information Flow ◽  
Information Integration ◽  
Measurement Method ◽  
Circuit Breaker ◽  
Data Communication ◽  
Physical Structure ◽  
Vacuum Arc ◽  
Primary Circuit ◽  
Vacuum Switch ◽  
The Status

In this paper, an object-oriented information model of an intelligent vacuum circuit breaker based on its physical structure and function (service) was established to integrate the measuring information flow of field parameters, the monitoring information flow of status data, and the operating and controlling information flow. The status parameters of the intelligent vacuum breaker were detected by analysing the principles and methods based on IEC61850 and IEC62271 standards. The IEC 61850 standard repository can be extended according to the characteristics of the intelligent vacuum breaker status parameters, and the IED server model was constructed to be suitable for the vacuum breaker. A key feature of the new method is the use of a multimode fibre that is incorporated into the IED server model to transmit the status parameters from the target to the sensor. The main characteristic of the measurement method is that it exhibits real-time transmission of data collection. The model includes temperature testing of the switch contact, vacuum arc testing, detection of vacuum switch motion and primary circuit parameters testing. Furthermore, we show how the IEC61850 standard can be used to give a better insight on data communication of the data collector and intelligent circuit breaker. Experimental results showed that the feasibility of intelligent vacuum breaker status monitoring through the switching-on test. It purposes to achieve information integration and a frame communication platform for the intelligent vacuum breaker.

Interaction of a Vacuum Arc With an SF6 Arc in a Hybrid Circuit Breaker During High-Current Interruption

2007 ◽  
Vol 35 (4) ◽  
pp. 933-938 ◽  
Author(s):  
RenÉ Peter Paul Smeets ◽  
Viktor Kertesz ◽  
Denis Dufournet ◽  
Dan Penache ◽  
Martin Schlaug
Keyword(s):  
Circuit Breaker ◽  
Vacuum Arc ◽  
High Current ◽  
Current Interruption ◽  
Hybrid Circuit
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