摘  要：本文对微机保护中几种主流算法的原理进行了概述和归纳，并介绍了近年来在这些算法基础上通过优化得出的改进算法。

关键词：微机保护；采样值积算法；导数算法；半周期积分算法；傅里叶算法

Abstract: This paper summarizes the principles of several main algorithms of power system protection, and introduces the improved algorithm based on these algorithms.

Key Words: Microcomputer protection; Sampling value product algorithm; Derivative algorithm; Half cycle integral algorithm; Fourier algorithm

【中图分类号】TP301.6 【文献标识码】B  文章编号1561-0330（2016）