Maintenance technology of substation source end based on IEC61850

The source maintenance of data is the basis of the integrated construction and standardized operation of power automation system, and it is an important way to avoid repeated data transmission and improve the integration of automation system. In view of the current situation that the information demand of dispatching section and substation end is not equal, this paper decomposes the SCD file of substation, removes the irrelevant data of dispatching end, reconstructs the SCD file of main station and substation, and constructs the multi service unified data model of the whole station at the plant and station end. In order to improve the operability of source end maintenance, this paper adopts the file transmission and dynamic number based on IEC61850 The data set function realizes the key file transfer, subscription and publishing process, greatly reduces the intermediate mapping and maintenance process, and improves the source side maintenance stability and efficiency. The technology shown in this paper has been put into engineering operation in Guangdong power grid company, and the effect is good in the trial operation stage, so as to improve the efficiency of joint commissioning of infrastructure stations.