Vacuum Circuit Breakers in Flexible AC Transmission Systems

Wenzel, T.

doi:10.1109/tpwrd.2011.2172820

Cited by 12 publications

(3 citation statements)

References 9 publications

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“…A novel PMA referred as a separated PMA is proposed in [17]. In [18], the possibilities of using VCBs instead of the power semiconductors are investigated on cost saving considerations. Theocharis et al [19] analyse the prestrike and the restrike effects during switching a VCB connected to a dry‐type foil‐winding transformer theoretically and experimentally.…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of a high‐speed permanent magnet characteristic actuator using eddy current effect for high‐voltage vacuum circuit breaker

Fang

Miao²,

Lin

et al. 2016

IET Electric Power Applications

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This study proposes a high-speed permanent magnet actuator (HSPMA) for high-voltage vacuum circuit breaker (VCB). The HSPMA comprises mainly of an eddy current repulsion force actuator and a permanent magnet (PM) actuator. The structural saliency of HSPMA is described and its control principle is elaborated in details. Finite element method is used and the eddy current is included in the computation of the electro-magnet fields of the HSPMA. The system equations, which couples the magnet field to circuit and mechanical equations, are built in ANSOFT Maxwell and Circuit Editor in this study of the making and breaking procedures of the HSPMA. The simulated characteristics show the design meets the requirement of the high-voltage VCB. The optimal thickness of the eddy current plate is 10 mm. The capacitor also has an economic optimal value of 10,000 µF. The simulated results indicate that the HSPMA has a sound characteristic when compared with circuit breakers with only PM actuator.

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Section: Introductionmentioning

confidence: 99%

Analysis and design of a high‐speed permanent magnet characteristic actuator using eddy current effect for high‐voltage vacuum circuit breaker

Fang

Miao²,

Lin

et al. 2016

IET Electric Power Applications

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“…Double-circuit transmission lines parameters would affect the normal operation of the transmission lines and relay protection actions directly [1][2]. Numerous conductors in double-circuit transmission lines make it difficult to achieve complete transposition.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Key Factors Affecting Double-Circuit Transmission Lines Parameters and Transposition Schemes

Ben

et al. 2014

AMR

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Double-circuit transmission lines parameters symmetry would affect the normal operation of the transmission lines and relay protection actions directly. This paper analyzes the impacts of three different phase sequence arrangements on parameters symmetry of conventional un-transposed double-circuit lines, and requirements can be met by the parameters symmetry for double-circuit transmission lines with different types and different length. Took practical engineering requirements into consideration, a simple and admissible suggestion on phase sequence arrangements and the transposition modes is given. The research results provide useful guidance and reference for future designs of double-circuit lines, especially for the compact one.

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“…Vacuum circuit breakers (VCBs) are mainly available in the medium-voltage (MV) range up to 40.5 kV [1]. Vacuum arc will appear once the contact pair of VCBs separate during the current interruption process [2].…”

Section: Introductionmentioning

confidence: 99%

Influence of fault parameters on breaking performance of vacuum circuit breaker

Shu

Ruan

Huang

2013

2013 2nd International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST)

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In order to analyze the influence of power system fault parameters on the breaking performance of vacuum circuit breaker (VCB), a black box model of VCB based on the diffuse vacuum arc interruption has been established in this paper. Taking the current zero as the demarcation point, arc voltage is modeled during the arcing period and post arc current (PAC) is modeled based on the theory of Langmuir probes during the post arc period. Based on this model, the equivalent discount factor of the breaking capability of VCB caused by the direct current (DC) component of short circuit current is evaluated using different methods. In addition, the post arc conductivity is used to represent the dielectric strength recovery of VCB, and the results show that the rate of rise of transient recovery voltage (TRV) mainly influences the post arc dielectric recovery rate after 1.5 μs, while the rate of decrease of short circuit current prior to current zero only influences the initial post arc dielectric recovery rate. This model is expected to provide an effective way to predict the breaking performance of VCB.I.

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Vacuum Circuit Breakers in Flexible AC Transmission Systems

Cited by 12 publications

References 9 publications

Analysis and design of a high‐speed permanent magnet characteristic actuator using eddy current effect for high‐voltage vacuum circuit breaker

Analysis and design of a high‐speed permanent magnet characteristic actuator using eddy current effect for high‐voltage vacuum circuit breaker

Analysis of Key Factors Affecting Double-Circuit Transmission Lines Parameters and Transposition Schemes

Influence of fault parameters on breaking performance of vacuum circuit breaker

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