CANBUS2.0B在配电网自动化中的应用

我国配电网自动化试点工作目前正在全国各地展开,其主干通讯网均采用光纤自愈环或光纤以太网结构,通讯协议大都采用IEC870-5-101规约。根据配电网终端信息量的不同,对于大型开闭所或配电所,使用多台FTU监控开闭所的全部信息,采用CANBUS现场总线技术实现FTU间隔层网络通信。CANBUS控制芯片SJA1000支持CAN2.0B协议,在原CAN2.0A协议的基础上扩展了ID的位数,又在过滤接收功能里增加了双滤功能,因而更加适用于具有多网络节点,需要实时传输信息,能够广播传输信息的配电网自动化终端层。

The Application of CANBUS 2.0B in Power Distribution Automation

The experiment of distribution automation is being undertaken on nation-wide at present.The trunk communi-cation network adopts either optical fiber self-cure-loop or optical fiber Ethernet,with the communication protocol often IEC870-5-101.As far as the information quantity is concerned,for big switch stations and power distribution stations that supervise and control all information of station with FTU,CANBUS field bus technology is preferred in communica-tion between strata of FTU.The CAN controller SJA1000supports CAN2.0B protocol.It extends the bits of ID on the base of CAN2.0A and adds double-filtration function in filtration-reception.Thus it's more suitable for multi-network-junction,real-time information transmission needed,broadcasting-available distribution automation terminal stratum.