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Transferring method of electric power remote terminal unit

A technology of electric telecontrol and telecontrol terminals, which is applied to electrical components, transmission systems, encryption devices with shift registers/memory, etc., can solve problems such as security threats to electric telecontrol terminals, and achieve the goal of preventing tampering or eavesdropping Effect

Inactive Publication Date: 2013-03-20
XI'AN POLYTECHNIC UNIVERSITY
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a transmission method for electric power telecontrol terminals, which solves the problem of security threats in the communication of existing electric power telecontrol terminals, and prevents the communication content from being tampered with or eavesdropped

Method used

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  • Transferring method of electric power remote terminal unit

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] A transmission method of a power telecontrol terminal, the data transmitted by the power telecontrol terminal is encapsulated into a frame, see figure 1 , a frame includes 10 fields;

[0034] The first field 1 and the fourth field 4 are fixed as the hexadecimal number 0x98, indicating the beginning of the frame;

[0035] The frame length field 2 occupies one byte, and its value is equal to the number of bytes from the beginning of the control field to all bytes before the checksum;

[0036] The security mechanism version number field 3 occupies one byte, indicating the version of the security mechanism used in the current communication;

[0037] The control domain field 5 occupies one byte and specifies the working mode of communication;

[0038] The link address field 6 occupies two bytes, indicating the target address of the commu...

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Abstract

The invention discloses a transferring method of an electric power remote terminal unit. Data transferred by the remote terminal unit are encapsulated into frames, and each frame comprises 10 fields; the first field and the fourth field are fixed to be hexadecimal numbers 0*98 to present starting of the frames; the value of the frame size field is equal to the number of bytes from a control domain and before checksum; a security regime version number field presents the version of a security regime adopted for communication; a control domain field sets a working mode of the communication; a link address field presents a target address of the communication; a link protocol data unit field is used for encapsulating application layer data; an abstract field is used for storing information abstracts produced by an integrity check algorithm; a checksum field is used for checking the fact that whether data of the frames changes or not during the communication process; and the tenth field is fixed to be a hexadecimal number 0*16 to present ending of the frames. The transferring method of the electric power remote terminal unit solves the problem of a security threat during communication of the electric power remote terminal unit when a power network automation system is large in size, and prevents communication contents from being tampered or intercepted.

Description

technical field [0001] The invention belongs to the technical field of electric power automation systems, and relates to a transmission method of electric power telecontrol terminals. Background technique [0002] Electricity is one of the most important energy sources on which the national economy depends. The power supply system is composed of power plants, output lines, power distribution systems and loads, etc., and the dispatch center conducts unified management of the entire system. The telecontrol terminal (RTU) works in the power plant or substation, collects the operation information of the power grid in real time, and sends the collected information to the dispatching center through various communication methods. RTU is the basic component for the successful operation of grid automation system. [0003] At present, the protocols commonly used by RTU are: Cyclic Digital Transmit (CDT for short) formulated by the Ministry of Electric Power of my country, the teleco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L9/32H04L9/06
Inventor 王会燃黄国兵马瑞芳加云岗薛纪文卓爱霞
Owner XI'AN POLYTECHNIC UNIVERSITY
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