CAN总线在小电流接地故障检测中的应用

The Application of CAN Bus in the Detection of Small Current Ground Fault

摘要: 为提高传统小电流接地故障检测系统在面对复杂环境时，其数据传输的可靠性和及时性，本文提出以CAN总线协议结合令牌环网作为系统的传输方式。CAN总线的应用可以提高系统对数据传输的速率，从而提高系统的数据吞吐量和对故障的反应能力。令牌环网则作为一种局域网协议，可以处理环网上多节点数据传输冲突的问题，有效改善系统的信道堵塞。本设计使用以STM32F407为核心处理器，对数据的输入存储和输出控制进行总体调配，并且对故障数据快速进行处理分析，得出正确的故障选线结果，保护电网设施。

Abstract: In order to improve the reliability and timeliness of data transmission of traditional small current ground fault detection systems in the face of complex environments, in this paper, can bus protocol combined with token ring network is proposed as the transmission mode of the system. Can bus can improve the data transmission rate, so as to improve the data throughput of the system and the ability to respond to faults. Token ring network, as a LAN protocol, can deal with the problem of data transmission conflict among multiple nodes in the ring, and can effectively improve the channel blocking of the system. In this design, stm32f407 is used as the core processor to allocate the input storage and output control of data, and analyze the fault data quickly to get the correct fault line selection results and protect the power grid facilities.