Abstract
In order to solve the contradiction between the security and real-time of GOOSE message from the IEC 61850, the paper proposes a communication security model, which is based on the AES_CBC_MAC algorithm and key information encryption, and the communication security implementation process of GOOSE message based on the model, after analyzing the structure of the GOOSE message, comparing the requirements of the security and the comparison of the experiment. By analyzing of confidentiality and integrity, exampling of the star network intelligent substation as the model, using Modelsim and OPNET as simulation software for different lengths of GOOSE messages to carryout security line processing and communication delay, we obtain the total delay of the communication security model. Experiments show that the intelligent substation GOOSE message communication security processing program has both good security and real-time.
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