Transformer substation real-time online anti-misoperation system based on multimode Internet of Things

Abstract

The invention discloses a transformer substation real-time online anti-misoperation system based on the multimode Internet of Things. The system comprises a monitoring host, five-prevention machine, concentrators and terminal collectors. The five-prevention machines are in communication connection with the monitoring host, and the five-prevention machines are connected with an emergency unlockingdevice. Each five-prevention machine is connected with at least one concentrator through communication, each concentrator is connected with a plurality of terminal collectors through communication, and each terminal collector is connected with a plurality of anti-misoperation intelligent terminals. The operation safety of the lock is comprehensively guaranteed, and the operation efficiency is greatly improved; compared with a mechanical program lock, the system greatly improves the overall operation reliability of the lock, and greatly relieves the working intensity and labor time of operationand maintenance personnel; compared with microcomputer misoperation prevention, the system can solve the problem that malignant misoperation accidents frequently occur due to the fact that a master key is used for unlocking operation from the source; the intelligent operation management is realized, the system cost is effectively reduced, the repeated investment is avoided, and the input-output ratio is improved.

Description

technical field [0001] The invention relates to the technical field of smart grid substations to prevent electrical misoperation operating systems, in particular to real-time online anti-misoperation operating systems of substations based on the multi-mode Internet of Things. Background technique [0002] In order to prevent personal, equipment, power grid and other accidents caused by electrical misoperation, the electric power industry adopts technical measures to set mandatory locks for high-voltage equipment and places. Mandatory locking is mainly used to prevent electrical misoperation accidents, and is usually implemented by a special electrical misoperation prevention system or device. The locking objects are circuit breakers, isolating switches, on-site operating components of grounding switches, temporary grounding points, and live site networks. Doors, etc., set a locking contact in the control circuit, and install a lock on the corresponding high-voltage equipment...

AI Technical Summary

Problems solved by technology

For this reason, a series of major accidents caused by misoperation still occur every year, causing casualties and equipment damage

[0005] The mechanical program lock adopts one key for each interval or one lock for one key, which cannot meet the development needs of the substation automation system. The main problems are as follows: 1. The installation is complicated, the debugging is difficult, and the maintenance workload is large; 2. The operation is very cumbersome; 3. The lock is easy to rust and jam, and the program lock program is prone to errors; 4. The intelligence is low, and it cannot be matched and interacted with modern substation monitoring

[0009] (3) Among the various components of the system, the computer key is the most critical one. It is not only the main tool for system lock operation, but also a bridge for system information communication; it is precisely because of this that the system endows it with many functions, resulting in its structure. It is too complicated; in addition, the working conditions (both operating the mechanical lock and the electric lock) and the environment are extremely harsh, and the computer key must also withstand the overvoltage generated during the operation, so the computer key often appears during the operation of the lock. The phenomenon of mechanical damage; once damaged, the switching operation must be completed by unlocking the key. During this process, vicious misoperation accidents are prone to occur;

Anti-mislocking logic and monitoring logic are in the same system, which is easy to cause confusion, and the effectiveness of anti-mislocking logic is relatively difficult, and there is no good solution at present

Mechanical interlocking and electrical locking can only solve the locking of some equipment in the substation, such as the mechanical locking between the main switch and the grounding switch, the electrical locking between the switch and the switch, etc., and cannot meet the five-proof locking requirements of the entire substation.

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