| Substation automation system is classified to function-oriented centralized automation system and the hierarchical object-oriented distributed automation system. Used in the design of centralized substation automation system, from the back-plane, the total control unit (front-end) and telemetry, remote control unit with focus group screen installed.Power system communication protocol is the language of power system information transmission, IEC60870-5-101 as the statute of the IEC60870 protocol suite "basic telecontrol tasks supporting standard ", has become the main communication standards in scheduling grid sub-stations, known as the remote communication protocol of official international standards.101 protocol designed in this communication software is by Visual Studio 2008 and SQL Sever 2008 development environment, the use of C # language. Firstly, the frame format of the 101 protocol and data transmission is analyzed in detail, and according to the specific communication process 101 protocol to complete the dynamic model. Then, the design method using Socket programming, to achieve the establishment of the link layer, so that the back-plane can achieve data asynchronous transfer with the front-end. Then the article discusses in detail the application layer 101 protocol, the core of the Statute of 101 ASDU object programming and how to send data frame pack, unpack the data frame of C # source code analysis. Finally, procedures and functions of interface further introduction. Software, database synchronization with SQL Server, providing a clear and preservation of the form used to query the data of substation automation system, including telemetry, remote, remote connections, remote data, remote control window directly with the implementation of the remote control command at any point No. , time synchronization with the API function to achieve the access to SQL Server database, and analysis of the monitoring window displays the message, debugging results are correct. |
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