摘要
研制了一种用双单片机实现的双原理自动准同期并列装置,该装置内部采用插件式结构,有2个单片机插件,分别采用侧重于硬件电路和软件算法的同期检测原理,CPU采用80296SA单片机。当2个单片机检测到同期条件符合时,才发出并列合闸信号,可最大限度地避免非同期误并列。装置采用一种基于加窗插值傅里叶变换及校正原理的准同期并列测量算法,在采样频率固定、发电机频率范围变化大的情况下,可同时精确测量并列两侧电压参数,保证并列的准确性和快速性。
A dual-principle-based quasi-synchronization device is developed, which consists of two independent 80296SA MCU modules, running under hardware-based principle and software-based principle respectively. The paralleling instruction is issued only when both MCU modules satisfy the synchronization conditions to avoid improper paralleling. The window interpolation discrete Fourier transform and spectrum correction technology are used in quasi-synchronization measuring algorithm to measure precisely the electrical parameters of both generator terminal and system bus with fixed sampling rate, even when the generator frequency varies greatly, which ensures the accurate and rapid paralleling.
出处
《电力自动化设备》
EI
CSCD
北大核心
2009年第4期87-90,共4页
Electric Power Automation Equipment
基金
国家自然科学基金项目(50677015)
湖南省电力科研攻关项目(20030301)~~
关键词
自动准同期
发电机
电力系统
双单片机
CPU
automatic quasi-synchronizatiom generator
power system
two MCUs
CPU
