Development of High-Voltage Vacuum Circuit Breakers in China

Liu, Zhiyuan; Wang, Jimei; Xiu, Shixin; Wang, Zhongyi; Yuan, Shuai; Jin, Li; Zhou, Heming; Ren, Yang

doi:10.1109/tps.2007.896929

Cited by 86 publications

(13 citation statements)

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“…Vacuum Circuit Breakers (VCB) above 52 kV have been developed and taken into service in Japan (more than 8.000 HV-VCB), China (many new products, few hundred in service) , Korea (development of a dry-air insulated HV-VCB) and USA (capacitor bank switches, service experience available) [3,4,5] The attempt to apply VCBs in electrical networks above 52 kV started with series arrangements of medium voltage VCB as shown in Fig. 7, showing an arrangement of 3 interrupters in series for 145 kV in 1975 (USA) and a size comparison of new 45 kV vacuum tube compared with a 15 kV distribution class tube.…”

Section: Historical Reviewmentioning

confidence: 99%

The role of vacuum in circuit breaker technology

König

2012

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

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Based on first installations of electrical energy systems at the second half of the 19 th century, apparatus were needed to close and open electrical circuits under load and short-circuit conditions. Looking back to the origin of the development of these apparatus very different media have been used in order to switch electrical currents with the focus to extinguish arising arcs after separation of the metallic contacts. Different arc quenching media like suitable gases or liquids have been applied. Recent developments are focussed to vacuum inside the tubes. The advantages and disadvantages, associated with the application of the above mentioned materials are reported. The important impact of vacuum application on switchgear technology is discussed. Different arc quenching media applied in switching apparatus need different conditions of commissioning, maintenance, repair and replacement as well as different supporting secondary equipment. All these points of view have to be taken into account in the design of the relevant switchgear which has to be in total as simple and reliable as possible under the aspect of a valuable asset to the user. Vacuum investigated first in the 17 th century by Otto von Guericke, Magdeburg, has proved in the meantime to be a powerful "material" for application in apparatus in electrical energy systems and is presently dominating the circuit breaker technology in the field of medium voltage networks with system voltages in the range of about 1 kV to 50 kV. However, apparatus using vacuum are invading the applications even in higher system voltages as well as down to the low voltage-range. A running CIGRE Working Group is dealing with this new trend. Some results as discussed in this international working group are briefly reported.

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Section: Historical Reviewmentioning

confidence: 99%

The role of vacuum in circuit breaker technology

König

2012

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

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“…Vacuum switches, which contain advantages of small volume, long life, and excellent breaking capability, have been widely applied in the field of medium voltage. Furthermore, their application in high voltage will also be widely accepted [3][4][5]. Nowadays, some bottleneck problems of basic theory of vacuum arc still need to be studied, containing the lack of arc flow field dynamic feature theory, which restricts vacuum switches' development and application.…”

Section: Introductionmentioning

confidence: 99%

Researches on Flow Field's Dynamic Features of Vacuum Switching Arc Based on Optical Flow Field

Dong¹,

Li²,

Guo³

et al. 2018

Proceedings of the 2017 2nd International Conference on Electrical, Control and Automation Engineering (ECAE 2017)

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Abstract-As a kind of fluid, the motion of vacuum arc is complicated and various. Its structure and distribution have a significant effect on vacuum interrupters' comprehensive properties. A method to analyze of arc flow field's dynamic feature based on optical flow is proposed aiming at complicated flow field of vacuum switch arc's sequence images. In this paper optical flow field's basic principle is firstly introduced, and then the noise filtering method to process arc images in different stages is used. Finally, the method of optical flow field estimation to obtain pictures of arc flow field's motion vector feature in the vacuum gap is adopted. According to the results we can find that in the stage of arc striking, the pressure of metal vapor in the vacuum gap is low, accompanied by an expansion of arc and the formation of several parts of eddy current zones. When the arc is going to be extinguished, with the decreasing of the temperature of vacuum arc column center, the arc plasma converges upon its column center instead of expanding, and the parts of eddy current zone shrinks and disappears. At the same time we can see that the method of optical flow field can obtain vacuum arc optical flow field's dynamic feature effectively to describe arc particle moving direction and size. Target images can also be divided easily, real-timely, and accurately, which provides a new technical mean to analyze the dynamic feature of vacuum arc flow field.

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“…Vacuum Interrupter using vacuum technology is being focused as one of alternatives in GCB for high voltage switchgears. Recently, in a series of VI development for high voltage switchgear 145kV 40kA VI was developed for the circuit breaker, and the eco-friendly switchgears without SF6 gas are researched and developed using VIs up to 72.5kV voltage level [1][2][3]. Because high voltage VI has long air gap between fixed and moveable contact electrode, they need strong axial magnetic field (AMF) to successfully control the vacuum arc.…”

Section: Introductionmentioning

confidence: 99%

The experimental research of 170kV VCB using single-break vacuum interrupter

Ryu

Kim

Choi

et al. 2012

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

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A newly developed coil-type electrode structure for high voltage vacuum interrupter (VI) of 170kV voltage level is presented in this paper. To evaluate the design results of electrode structure, magnetic field distributions on the center plane of gap between electrodes and on the surface of contact electrodes are measured, and the vacuum arc behaviors during the current interruption in the vacuum chamber are observed. The multi-shield structure is suggested as the internal floating shield. The experimental results of the sample electrode and internal shield structure are compared with FE analysis results. The current interrupting tests are performed to evaluate the current breaking performance of 170kV VI according to IEC 62271-100.

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Development of High-Voltage Vacuum Circuit Breakers in China

Cited by 86 publications

References 1 publication

The role of vacuum in circuit breaker technology

The role of vacuum in circuit breaker technology

Researches on Flow Field's Dynamic Features of Vacuum Switching Arc Based on Optical Flow Field

The experimental research of 170kV VCB using single-break vacuum interrupter

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