摘 要在电力系统中，继电保护是保证电力系统安全运行和提高电能质量的重要工具，而且，电力系统的规模在不断扩大，用户对电能质量的要求也在不断提高。因此，对继电保护的要求也越来越高。高频保护是110kV 及以上输电线路的主保护，也是高压电网保护的第一道防线，能够对全线路故障实现无时限切除，这是高频保护的重大优点，所以，在超高压电网的稳定措施中高频保护受到高度重视。本次的设计是110kV 线路微机高频保护。本文首先简要介绍了电力系统微机继电保护的进展历史、现状、技术特点及其进展方向。接着详细论述了110KV 线路微机继电保护的构成以及各个部分的工作原理，设计内容包括三大部分：硬件电路设计，软件部分设计和高频保护参数计算及动作值整定。硬件电路主要由CPU 主系统、数据采集系统和开关量输入/ 输出系统构成，软件设计，主要包括高频保护的主程序、中断服务程序和故障处理程序设计，软硬件结合实现保护功能。关键词：继电保护；微机保护；高频距离保护；高频零序保护AbstractIn the electrical power system, the relay protection is guaranteed the electrical power system safe operation and improves the electrical energy quality, moreover, the electrical power system scale is expanding unceasingly, the user unceasingly is also enhancing to the electrical energy quality request. Therefore, more and more is also high to the relay protection request. The high frequency protection is 110kV and above transmission line host protection, also is the first defense line which the high tension line protects, can realize the non-time limit excision to the entire line fault, this is the high frequency protection significant merit, therefore, receives in the ultrahigh voltage electrical network stable measure intermediate frequency protection takes highly.This time design is the 110kV line microcomputer high frequency protection. This article first was brief introduced the electrical power system microcomputer relay protection development history, the present situation, the technical char...
