摘要
探讨了氧化锌压敏电阻SPD的传统脱扣方法的不足:脱扣不及时、不精确乃至误脱扣,以及低电压电源系统避雷器智能脱扣系统的要求与实现的难点,并设计了基于电流互感器数据差分方法在线检测压敏电阻漏电流和微控制器数据处理的智能脱扣方法,所述脱扣器动作准确及时,可长期复用。
The disadvantage - imprecise, untimely or even incorrect disconnecting - of traditional disconnection method of zinc oxide MOV SPD is discussed as well as the requirements and the difficulties on its fulfillment of the smart disconnecting system of low voltage power supply system arrester. A method of smart disconnection based on current leakage online measuring by current transformers data differential method and MCU differential data processing is designed. The mentioned smart disconnecting system can act timely and precisely, and is reusable over time.
出处
《电瓷避雷器》
CAS
北大核心
2013年第1期79-83,共5页
Insulators and Surge Arresters
基金
台州市高校教育科学规划研究课题(编号:GG12008)
关键词
SPD
智能脱扣器
劣化保护
SPD
smart disconnection
protection for degradation
