Real-time transmission and remote control method for relay protection device human-computer interfaces

Abstract

The invention discloses a real-time transmission and remote control method for relay protection device human-computer interfaces. Aiming at different relay protection device human-computer interface systems, a device side program and a PC side software tool are developed, and an image processing and transmission technology is utilized to achieve real-time representation and remote control over the device human-computer interfaces. On the basis that schemes such as image collection, run length encoding compression, image transmission and restoration are designed well, the image transmission control is achieved, the problem that when devices are provided with no liquid crystal display or liquid crystal displays are damaged, the devices can not be monitored normally is solved, the defect that remote control over the device interfaces cannot be achieved in the prior art is overcome, meanwhile, engineers can utilize a PC to debug and operate devices more conveniently, and the method plays an important role in relay protection devices and monitoring systems. In addition, the scheme of the method is not affected by updating of the device program or changing of configuration files, and the method has high practicability under the condition that various regions have different requirements for the devices currently.

Description

technical field [0001] The invention belongs to the technical field of power system automation and relates to real-time transmission and remote control of a man-machine interface based on image processing. Background technique [0002] At present, most relay protection devices are equipped with HMI (Human Machine Interface) as an important medium for information exchange between the device and the user. Faced with the ever-changing requirements of the power system, the traditional HMI operation method can no longer fully meet the needs of the power system. First, some special devices are limited by the size and installation area, and cannot be installed with hardware devices such as LCD screens to realize HMI functions. Secondly, , the traditional method of setting various contents of the device (working mode, IP, time synchronization, etc.) can only be realized by operating the device interface on site, or through the development of specific tools by the secondary equipment...

AI Technical Summary

Problems solved by technology

Faced with the ever-changing requirements of the power system, the traditional HMI operation method can no longer fully meet the needs of the power system. First, some special devices are limited by the size and installation area, and cannot be installed with hardware devices such as LCD screens to realize HMI functions. Secondly, , the traditional method of setting various contents of the device (working mode, IP, time synchronization, etc.) can only be realized by operating the device interface on site, or through the development of specific tools by the secondary equipment manufacturer, so that the device must have a display such as a touch screen To operate the equipment, or operators must master the various tools provided by the manufacturer

Third, for existing relay protection devices, it is impossible to remotely reproduce and control the HMI interface in real time

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