Intelligent substation ICD model file digital signature verification method

Abstract

The invention relates to an intelligent substation ICD model file digital signature verification method. The method comprises the following steps: defining and determining feature content range of an ICD model file; carrying out local analysis and extraction on the feature contents of the ICD model file; carrying out textuality processing on the feature contents to generate abstracts and carrying out encryption to form digital signature values; forming complete signature information and giving the information an XML format; after the device detection is qualified, attaching the signature information to the ICD model file; when engineering model is in integrated configuration, importing the ICD model file of each device, and enabling the signature information of the ICD model file to be transferred and attached to an SCD model file; and after the engineering configuration process is finished, carrying out signature consistency comparison verification on the SCD model file. The method provides an effective and feasible technological means for model control in the engineering construction and debugging process, guarantees the actual device operating model to be completely consistent with the equipment admittance test qualified ICD model file contents, and guarantees safe and reliable operation of the intelligent substation.

Description

technical field [0001] The invention relates to a verification method in the field of electric power automation, in particular to a verification method for a digital signature of an ICD model file of an intelligent substation. Background technique [0002] Smart substations widely use the IEC61850 standard for communication. Model configuration files such as ICD, CID, SCD, and SSD are the basis for realizing IEC61850 communication. Whether the configuration files are standard, complete and correct directly affects the safe operation and interoperability of equipment. The ICD model file is a device capability description file, which describes the function and configuration of the smart device. SCD model files are station-wide configuration description files. In practical engineering applications, a substation is composed of many intelligent devices, therefore, the SCD model file is formed by integrating the ICD model files of these devices and adding engineering configuratio...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a verification method for the digital signature of the ICD model file of the intelligent substation. During the process of configuration and equipment debugging, equipment manufacturers often modify the ICD model file and its configuration at will, resulting in problems such as abnormal operation, abnormal communication, and incorrect function response of the secondary equipment; The content of ICD model files that pass the equipment network detection may be inconsistent, resulting in various potential equipment interoperability risks in the daily operation or future reconstruction and expansion of smart substations

Images