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首页> 外文会议>Electrical Contacts, 1993., Proceedings of the Thirty-Ninth IEEE Holm Conference on >High temperature superconductors as current limiters-an alternative to contacts and arcs in circuit breakers?
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High temperature superconductors as current limiters-an alternative to contacts and arcs in circuit breakers?

机译：高温超导体作为限流器-断路器中触点和电弧的替代品？

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摘要

Nowadays in circuit breakers from the low voltage level to the highest transmission voltages, contacts to carry the current and arcs established at contact opening to break it are utilized. Of the various possible but scarcely used alternatives to this principle, the transition between the superconducting and normal-conducting state has gained new attention since the high T/sub c/ superconductors (HTSCs) have been discovered. This paper assesses the technical possibilities and problems of resistive current limiters with such superconductors. Based on results of experimental investigations of HTSC samples, simulations of the behavior of fictive HTSC limiters in electrical power networks are carried out. Assuming a homogeneous conductor, the self-quench initialized by exceeding the critical current is calculated for conductors with different critical current densities. Furthermore, questions of inhomogeneity along the conductor, current pulse triggering, transient overvoltages and the effect of parallel elements are discussed.
机译：如今，在从低电压电平到最高传输电压的断路器中，使用了承载电流的触头和在触头开口处建立的电弧以将其断开。自从发现高T / sub c /超导体（HTSC）以来，在此原理的各种可能但很少使用的替代方法中，超导状态和正常导电状态之间的过渡已引起了新的关注。本文评估了使用此类超导体的电阻式限流器的技术可能性和问题。根据HTSC样品的实验研究结果，对虚拟HTSC限制器在电力网络中的行为进行了仿真。假设导体是同质的，则针对具有不同临界电流密度的导体，计算通过超过临界电流而初始化的自淬火。此外，还讨论了导体不均匀，电流脉冲触发，瞬态过电压以及并联元件的影响等问题。

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