An intelligent protocol conversion method for intelligent substation operation and maintenance
DOI：DOI: 10.19783/j.cnki.pspc.201585
Key Words:intelligent operation and maintenance of substation  intelligent protocol conversion  protocol converter  automatic identification  adaptive configuration
Author NameAffiliation
LI Jingsong1 1. School of Electrical and Electronic Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
2. State Grid Fuzhou Power Supply Company, Fuzhou 350000, China 
LIU Luyi2 1. School of Electrical and Electronic Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
2. State Grid Fuzhou Power Supply Company, Fuzhou 350000, China 
CAO Shang1 1. School of Electrical and Electronic Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
2. State Grid Fuzhou Power Supply Company, Fuzhou 350000, China 
LUO Xiaotong1 1. School of Electrical and Electronic Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
2. State Grid Fuzhou Power Supply Company, Fuzhou 350000, China 
SU Xin1 1. School of Electrical and Electronic Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
2. State Grid Fuzhou Power Supply Company, Fuzhou 350000, China 
WANG Shaorong1 1. School of Electrical and Electronic Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
2. State Grid Fuzhou Power Supply Company, Fuzhou 350000, China 
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Abstract:To realize the fusion application of multi-source data, online detection devices with different data exchange protocols need to be connected to the intelligent operation and maintenance diagnosis platform of a substation. In response to this need, an intelligent protocol conversion method with the functions of automatically identifying the protocol used in the other side of communication and adaptively configuring the parameters of the interconversion protocols is proposed. By judging multiple special fields of the data frame, the data exchange protocol followed by the data message is preliminarily determined. The data exchange protocol followed by the other side of communication is finally determined by tentatively testing the command type field and the check code field of the data frame. Through the conversion mode of "communication message A-database-communication message B", the protocol conversion modes of "one-to-many", "many-to-one" and "many-to-many" are realized. An implementation scheme, and its technical details, of the proposed intelligent protocol conversion method are introduced in detail. The proposed method makes up for the deficiency of the traditional "one to one" protocol converter and provides a convenient method for all kinds of online detection devices to access the intelligent operation and maintenance diagnosis platform of a substation. This work is supported by the National Key Research and Development Program of China (No. 2017YFB0902800) and the Science and Technology Project of State Grid Corporation of China (No. 52094017003D).
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