电力系统频率保护频率的计算优化探究  

Research on Calculation and Optimization of Frequency Protection Frequency of Power System

作　　者：平黄荣 Ping Huang-rong

机构地区：[1]上海思源弘瑞自动化有限公司,上海201100

出　　处：《电力系统装备》2021年第8期51-52,共2页Electric Power System Equipment

摘　　要：现阶段,电力系统频率保护频率的计算使用的方法主要包括软件法及硬件法两种。由于软件测频算法存在计算数据窗长度过长以及误差较大等问题,加之硬件测频法时常会受到谐波影响,因而也会出现计算误差较大问题,为有效解决上述问题,本文使用了数字滤波器与三点采样频率算法相结合的频率计算方案。At this stage,the methods used to calculate the frequency protection frequency of the power system mainly include software method and hardware method.Because the software frequency measurement algorithm has problems such as the length of the calculation data window is too long and the error is large,and the hardware frequency measurement method is often affected by harmonics,there will also be large calculation errors.In order to effectively solve the above problems,this article uses A frequency calculation scheme that combines a digital filter and a three-point sampling frequency algorithm.

关 键 词：软件测频法 硬件测频法 数字滤波器 三点采样频率算法 

分 类 号：TM77[电气工程—电力系统及自动化]