一种短路电流快速识别电路的研究  

Research on a Fast Identified Circuit of Short-circuit Current

作　　者：郑清水[1] 马志瀛[1] 钱华[1] 

机构地区：[1]西安交通大学电气工程学院,西安710049

出　　处：《电工技术学报》2004年第3期99-102,共4页Transactions of China Electrotechnical Society

摘　　要：尽可能缩短短路电流的识别时间不仅对于微机继电保护具有重要的意义,对正在发展中的电器智能化控制也具有极其重要的意义。本文提出采用硬件电路来实现短路电流的识别,通过原理分析,设计了相应的电路。仿真和模拟实验表明,该电路在各种故障状态下均能在5ms内迅速检测出短路信号。它对微机继电保护、电器智能化等具有重要的意义。Shortening the short-circuit current identifying time plays an important role not only in computer relay protection, but also in developing intelligent electrical apparatus. This paper advances a new idea, which is realized by applying hardware circuit to identify the short-circuit current. After the working principle analyzed, the new circuit is designed. The simulation and experiment result show that this circuit can identify the signal of short-circuit current in 5ms. This result has an important meaning in computer relay protection and intelligent electrical apparatus.

关 键 词：短路电流 快速识别 硬件 移相器 仿真 

分 类 号：TM77[电气工程—电力系统及自动化]