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2009, 36 (8) 运行与保护 EM CA
基于 FPGA的电动机微机保护实现方法
卢峥, 黄大勇
(南阳理工学院,河南南阳 473000 )
摘要: 介绍了基于 FPGA的微机型电动机保护装置的硬件结构及实现方法,从硬件及算法两方面考虑
保护措施硬件以公司系列芯片为核心、软件以最小二乘法为核心的实现方
3 , A ltera Cyclone EP1C12Q240C8
案。由于装置中采用了高速、高性能的 FPGA处理器,因此可以引入复杂的滤波和分析算法,且外围电路大为
减少,具有精度高、动作速度快、体积小和抗干扰性强的特点。装置可对 2 000 kW 以下的电动机实现过流、反
序、零序等保护,为设备的检修与维护提供依据。
关键词: 电动机; 继电保护; 微机
中图分类号: TM307 + . 3 文献标识码: A 文章编号: 1673 6540 (2009) 08 0037 05
M otor M puter Protection Ba sed on FPGA
LU Zheng, HUAN G D a yong
(Nanyang Institute of Technology, Nanyang 473000, China)
Abstract: The hardware structure and actualized method of motor p rotection device based on Field Programma
ble Gate A rray ( FPGA) were introduced. The hardware and algorithm of relay p rotection measures were analyzed in
detail. According to the demand of the set, EP1C12Q240C8 chip of ALTERA is used as Central Processor Unit and
the Least Square Method is used as the core algorithm. For the high speed and high performance FPGA p rocessor is
app lied, p licated algorithm on filtering and analysis can be used in the control software, and the peripheral
circuits can also be reduced to a great extent. So the system has the characteristics of high measure p recision, high
action speed, small size and well anti jamm ing. This equipment could achieve many p rotections for the motors below
2 000