Design And Research Of The Measurement-control System Based On CAN Bus To Transformer Substation

Fieldbus is praised computer LAN and it is one of the technology developmental hotspots in the automatization domain. Its appearance provided with strong technology supports for the distributed control system to realized the reliable data traffic among nodes.The adoption of credibility , practicality , higheffect communicate network and the share of information and data in the transformer substation can optimize the function of its automated system. With the development of computer measurement-control technique and the enlargement of electric power network , the surveillance-control system based on fieldbus must be widely applied to transformer substation.Based on CAN bus,this paper researched its application principle and actualization means in the integration automated system of transformer substation. Contraposing the limitation of traditional measurement-control,this paper designed one kind of field-bus measurement-control network based on CAN bus ,and particularly discussed the theory of CAN bus technique and the application in transformer substation integrated automatic system. In this paper ,a method of Double CPU designed technique is introduced. It is analyzed on the basis of software and hardware operated on the method .The problem of reliability of data communication between two CPU is settled by the dual-port RAM. All those above mentioned can remarkably shorten design period ,it make quickly-speed and reliable communication among those devices of transformer substation possible and provide the condition for ultimately unmanned position in transformer substation.