Quench Detection and Protection for High Temperature Superconducting Transformers by Using the Active Power Method
Quench Detection and Protection for High Temperature Superconducting Transformers by Using the Active Power Method
复制标题
有功功率法高温超导变压器失超检测与保护
DOI：
10.1016/j.phpro.2014.09.071
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Y. Kobayashi
中科院分区：
文献类型：
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作者：
N. Nanato;Y. Kobayashi
交流高温超导(HTS)线圈已被开发用于变压器、电机等。失超检测和保护系统对交流高温超导装置的安全运行至关重要。平衡电压法是目前普遍使用的失超检测和保护方法，但该方法存在高压火花的风险，特别是在交流运行中。由于该方法需要将电压抽头焊接到线圈绕组的中点，而交流高温超导设备通常在高压下运行，因此在没有绝缘的情况下，中点可能会产生高压火花。提出了采用有功功率法进行失超检测和保护。这种方法不需要在线圈绕组的中点抽头，因此它对交流高温超导设施具有内置的有效性。在本文中，我们证明了这种方法可以检测到高温超导变压器的失超，而且我们提出的由晶闸管组成的失超保护电路简单，适用于交流高温超导装置。
AC high temperature superconducting (HTS) coils have been developed for transformers, motors and so on. Quench detection and protection system are essential for safety operations of the AC HTS facilities. The balance voltage method is universally used for the quench detection and protection, however especially for AC operations, the method has risks in terms of high voltage sparks. Because the method needs a voltage tap soldered to a midpoint of the coil winding and the AC HTS facilities generally operate at high voltages and therefore high voltage sparks may occur at the midpoint with no insulation. We have proposed the active power method for the quench detection and protection. The method requires no voltage tap on the midpoint of the coil winding and therefore it has in-built effectiveness for the AC HTS facilities. In this paper, we show that the method can detect the quench in an HTS transformer and moreover our proposed quench protection circuits which consist of thyristors are simple and useful for the AC HTS facilities.
高温超导电力应用走向现实之路 成本问题和技术问题
DOI：
--
发表时间：
2005
期刊：
Cryogenics 45
影响因子：
--
作者：
E.Taketani;T.Matsui;N.Fujimura;K.Morii;O.Tsukamoto
通讯作者：
O.Tsukamoto