Device for remotely restarting power of transformer station communication manager

Abstract

The invention relates to an automatic and safe control system of a power system and specifically a device for remotely restarting the power of a transformer station communication manager. The device comprises the communication manager, an AC relay, a telephone switchboard, and a telephone switchboard background serve. The telephone switchboard background server is connected with the telephone switchboard. The device is characterized in that the power connecting line of the communication manager is connected with a power line through the normally-closed contact of the AC relay; and the telephone line of the telephone switchboard is connected with the normally-open contact of the AC relay. The device restarts the communication manager by means of the telephone line and is especially suitable for a transformer station in a power supply system, low in cost, easy to popularize, good in social benefit and economic benefit, stable in operation, high in liability, and capable of timely processing faults so as to prevent unnecessary inspection links and shorten overhaul time.

Description

technical field [0001] The invention relates to an automation and safety control system of an electric power system, in particular to a device for realizing the remote restart of the power supply of a substation communication management machine by using a telephone line. Background technique [0002] We know that the substation communication management machine is the center of information management and circulation of the integrated automation system. Once the unattended substation communication management machine crashes, the safety control system will be interrupted, and the control and dispatch master station will completely lose the monitoring of the substation. At this time, when a substation equipment failure or accident occurs, the centralized control station and the dispatching center will not get any information, which is very likely to cause the expansion of the accident or delay the analysis and treatment of the accident, which will pose a serious threat to the saf...

AI Technical Summary

Problems solved by technology

[0002] We know that the substation communication management machine is the center of information management and circulation of the integrated automation system. Once the unattended substation communication management machine crashes, the safety control system will be interrupted, and the control and dispatch master station will completely lose the monitoring of the substation. At this time, when a substation equipment failure or accident occurs, the centralized control station and the dispatching center will not get any information, which is very likely to cause the expansion of the accident or delay the analysis and treatment of the accident, which will pose a serious threat to the safety and economic operation of the power grid and cause negative social impact. The impact is even more immeasurable

Channel faults occur frequently in the entire dispatching communication link, which is a prominent hidden danger of power grid security

According to statistics on the operation data of the dispatching automation system over the years, among the channel signal interruption faults, the breakdown caused by the substation communication management machine accounted for 30% of the total number of faults; once the channel interruption caused by the communication management machine crash occurs, the existing methods only It is possible to send personnel to the site to restart the equipment. Maintenance experience shows that the probability of normal operation of the communication management machine can be restored once the power is restarted. It is obviously time-consuming and laborious to send personnel to the site to deal with it. In some cases, it will even delay time, resulting in long-term interruption of the channel

[0003] Aiming at the failure of communication equipment, domestic literature introduces the principle of some remote restart devices, most of which are realized by single-chip microcomputer control relays. The disadvantage is that the circuit principle is relatively complicated, and too much entanglement in "password verification", "language prompt" and other functions In some places, LAN line channels, digital encoders, controllers, etc. of optical transceivers are used to realize remote reset operations

Although these devices can realize the function of remote restart, they cannot be widely recognized and promoted on a large scale due to the complexity of the principle and high cost.

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