With computerized protection having become a major form in power systemrelay protection, a digital protective device in motor has been developed and used.
随着微机保护成为电力系统继电保护的主流形式，数字式电动机保护装置也被研制和应用。
2
Fuzzy theory considered as a burgeoning subject is applied in many fields of power system, so much as in protectiverelay field.
模糊数学作为一门新兴的学科已经在电力系统获得了广泛应用，近年来在继电保护中的应用也相继开展。
3
This paper introduces a Microcomputer protection device based on C8051F020, including the discussion of protectiverelay functions and analysis of general system hardware and software design.