Development of Hybrid Fault Current Limiting Circuit Breaker with Environmentally Benign Gases

环保气体混合型故障限流断路器的研制

基本信息

批准号：
13555080
负责人：
MATSUMURA Toshiro
金额：
$ 2.43万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13555080/
关键词：
Alternative Gases of SF_6 Global Warming Circuit Breaker Current Limiting H_2 Superconducting Arc 脱SF_6ガス環境低負荷超電導 CO_2ガス遮断機 SF6ガス環境

项目摘要

In the present study, a current-interruption experiment was performed to examine the interrupting capability for a hybrid circuit-breaker consisting of a load-break switch filled with H_2 and an air contactor connected in series. As far as the present experimental conditions are concerned, it is found that the hybrid model is capable of breaking a current with a peak value of 950 A. Compared with a double-switch model using Air in both quenching media which can interrupt a current with a peak value of 600 A, the current interrupting capability of the hybrid circuit-breaker was proved to be higher than that of the double-switch Air circuit-breaker due to the difference of the thermal and electrical conductivity between H_2 and Air. In other words, the hybrid model using Air and H_2 as arc-quenching media improves the interrupting performance. Furthermore, we have proposed a hybrid system in which a fault current limiter (FCL) and a circuit breaker (CB) are combined in' series. The present study describes the breaking ability of a small model of a hybrid fault current limiting circuit breaker (hybrid FCLCB), which consists of an air relay unit and a flux flow resistive type of a superconducting FCL unit with a high Tc B2223 bulk. We took two Bi2223 elements connected in series as the minimum configuration of the flux flow resistive type of the FCL and investigated the generation process of the flux flow resistance and the contact resistance. The current limiting breaking performance was investigated for the small model of the hybrid FCLCB that was constructed by connecting the minimum unit of the FCL to the relay contactor. The hybrid FCLCB for the 6.6 kV power distribution system was designed from the experimentally obtained results in the small model.

在本研究中，进行了电流互动实验，以检查混合断路器的中断功能，该混合动力断路器由装有H_2的负载开关和串联连接的空气接触器组成。就目前的实验条件而言，发现混合模型能够打破峰值为950A的电流。与在两种淬灭介质中使用空气使用空气的双切口模型相比，在两种淬灭介质中使用空气中断的电流可以中断600 a的电流，峰值可能会在Hybrid prociver-tructival and the Hybrid procivility中的电流中断和远程差异均高于双重电路的差异，这是远距离的差异差异。和空气。换句话说，使用空气和H_2作为弧形媒体的混合模型改善了中断性能。此外，我们提出了一个混合系统，其中将故障电流限制器（FCL）和断路器（CB）组合在一起。本研究描述了混合故障电流限制断路器（混合FCLCB）的小型模型的破裂能力，该模型由空气中继单元和具有高TC B22223块的超导FCL单元的通量流电阻类型组成。我们采用了两个串联的BI2223元素，作为FCL的通量流电阻的最小构型，并研究了通量流阻力和接触电阻的生成过程。通过将FCL的最小单元与继电器接触器连接起来，研究了当前的限制破裂性能，该模型的杂种FCLCB的小型模型。从小型模型中设计的6.6 kV功率分布系统的Hybrid FCLCB是根据实验获得的。