Method for improving safety of remote control high-voltage switch

Abstract

The invention discloses a method for improving safety of a remote control high-voltage switch. The method comprises the following steps that the content of a conventional 104 protocol is expanded, andASDU55 in a reserved segment is selected as a data type mark; a dispatcher selects a high-voltage switch needing to be remotely controlled at the monitoring system of the main station end and sends the high-voltage switch to the front-end system of the main station end; according to the received information, the front-end system extracts corresponding equipment information from a database to assemble a remote control message and sends the remote control message to the communication gateway machine after the verification is passed; the communication gateway machine analyzes the remote controlmessage and searches a measurement and control device; and after receiving the remote control message, the communication gateway machine analyzes the switch scheduling number verification informationcarried in the remote control message, verifies the switch scheduling number verification information with the additional attribute of the measurement and control device, and forwards the remote control information to the corresponding measurement and control device, and the measurement and control device executes an operation command. According to the method, multiple links in the process of remotely controlling the high-voltage switch can be verified, and the probability of misoperation in the remote control process is reduced, and the correctness and safety of remote control operation are ensured.

Description

technical field [0001] The invention belongs to the field of remote control of an electric power dispatching automation system, in particular to a method for improving the safety of a remote-controlled high-voltage switch. Background technique [0002] With the application of network technology in the power system, the communication mode between the power dispatching control center and the substation integrated automation system is based on the power dispatching data network, using the IEC60870-5-104 protocol to transmit four-remote information. When the dispatcher on duty remotely operates the high-voltage switch in the substation, the remote control command transmitted by the protocol only includes the point (that is, the address code) and the opening and closing attributes of the high-voltage switch in the remote control point table, and the communication gateway receives the After the remote control command, judge whether the point exists in the remote control point tabl...

AI Technical Summary

Problems solved by technology

[0003] In the process of maintenance or transformation, due to the negligence of the staff, the remote control point tables of the plant station and the master station do not correspond. When performing remote control operations, misoperation events will occur, and miscontrol will also affect the safe and stable operation of the power grid. pose a great threat

In the actual power production process, due to various conditions, it is difficult to verify all the information after each equipment maintenance. All these problems bring great pressure to the staff

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