CAN通信接口设备在微电网微机保护中的应用

Application of CAN Interfaced Devices in Microprocessor-based Protection

由于微电网由可再生新能源组成,其保护有别于传统的电网保护,需要建立一套追踪微电源动态特性以及继电器状态的智能保护系统。由于传统通信速率低,数据出错率高。本文设计了一种基于现场总线CAN的微电网微机保护测控装置。结合eCAN控制器的特点,建立了以TMS320F2812内置eCAN模块为核心的微电网微机保护测控系统。并且介绍了该系统的硬件、软件设计方案。编写了CAN通信的发送和接收程序,通过通信实验,验证了系统的实时性、可靠性和准确性。

Microgrid consist of renewable sources,the protection scheme is different from traditional Grid, an intelligent system which can track the dynamic data of microsources and the state of relays. Because of the traditional microprocessor-based protection measure and control equipment＇s low communication speed and high data fault rate,we designed a microprocessor-based protection measure and control equipment using the CAN fieldbus combing the eCAN controller＇s advantages, we established a microgrid microprocessor-based protection measure and control system taking TMS320F2812＇s inner eCAN block as center,and also introduced this system＇s hardware and software＇s designing scheme. We programmed CAN communication send and receive program, through communication experiment, we verified this system＇s real-time,reliability and accuracy.