【摘要】 根据复杂可编程逻辑器件 (CPLD)的特点及其在继电保护的应用背景 ,探讨了CPLD在配电网单相接地故障选线装置中的设计与使用方法。应用CPLD不仅可以大大简化电路、提高装置的可靠性 ;而且装置逻辑功能的改变可以通过编程实现 ,使得装置的调试更加方便。更多还原

【Abstract】 According to the characteristics of complex programmable logic device (CPLD) and its application background in the relay protection,this paper studies the design and the application methods of the CPLD in the single-phase earth fault line detection device of distribution network. The application of CPLD simplifies the electric circuit, and improves the reliability of the device; and the changes in logic functions can be realized by programming, so the device debugging can be simplified.更多还原