【摘要】 在分析和回顾数字保护继电器硬件发展的基础上 ,指出微处理器自身固有的不足 ,介绍EDA技术的基本内容和优于CPU的特点。文章给出了CPLD FPGA在数字保护继电器中作为通用I O接口、作为协处理器、作为独立的保护CPU以及设计数字保护专用芯片和在系统编程等方面的具体使用方法。这一新技术的出现 ,必将给智能化电器的硬件发展带来新突破 ,片上系统将是数字保护继电器的发展方向更多还原

【Abstract】 Based on the review of hardware progress in the digital protective relay, this paper points out the disadvantage of microprocessor, and indicates the some characteristic of EDA technology which is better than microprocessor. Some typical applications of CPLD/FPGA in digital protective relay are illustrated, such as, used as general I/O port or co-processor or CPU. The protective relay′s ASIC design and in system programmability are discussed. The development of this new technology will bring the great progress in smart electric apparatus.更多还原