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| 摘要: |
| 多CPU形式的硬件结构被广泛采用于新型综合保护装置中，其主要问题是如何简单、可靠地实现装置内部模块之间的数据传递。介绍了综合微机保护装置TH21－4采用当前流行的MODBUS通信协议实现装置内部通信的方法。该方法在保留MODBUS协议可靠性的同时，根据保护装置数据类型和数据传递特点，对其报文格式和通信方式加以简化和改进，使通信过程和调试方法简单易行，且经过简单改进和扩展就可应用到绝大多数综合自动化设备中，具有很好的实用价值。 |
| 关键词: 电力系统 微机保护 CPU 综合保护装置 通信 |
| DOI： |
| 分类号:TM774 |
| 基金项目: |
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| Realization of Interior Communication in the Integrated Protection Device Based on Multi-CPU Structure |
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ZHANG Nan HUANG Yi zhuang TANG Xiao quan LI Xuan hua
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| Abstract: |
| The new hardware structure based on multi CPU is now widely adopted in the integrated protection devices, one of its most important points is how to easily and reliably realize the interior data transmission among the modules. The popular MODBUS protocol is adopted to realize the interior data transmission for TH21?4 integrated protection device introduced here. According to the features of the data types and data transmission used in the protection devices, the message frame and communication mode of MODBUS is simplified and improved while its reliability is kept. It makes both the communication procedure and the debug method simpler. By simple improvement and extension, it can be applied to most of the substation integrated automation devices with its good practical value. |
| Key words: microcomputer protection,MODBUS protocol,multi CPU structure,communication mode |
