Real-time transmission and remote control method of man-machine interface of relay protection device
A relay protection device, man-machine interface technology, applied in the transmission system, data processing input/output process, electrical components, etc., can solve the size and size of the installation area restrictions, can not install the LCD screen, can not remotely reproduce the HMI interface in real time and other issues, to achieve strong practicality and flexibility, and good results
Active Publication Date: 2016-09-07
NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
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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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[0029] In the following, a specific embodiment will be used to illustrate the two types of human-machine interface systems of relay protection devices mainly studied by the present invention. The first type of HMI is developed using the Zinc graphical interface development tool under the Vxworks platform. The LCD controller uses EPSON’s 1354 display controller. The machine interface will automatically open the soft keyboard when it needs to input values or characters, and use the menu pop-up dialog box to select various functions; the second type chooses UGL to realize the interface system, using 192×64 black and white LCD screen, single-window display interface, input device Use keys. Those skilled in the art can easily extend it to most relay protection devices through the research on these two situations.
[0030] The HMI module and the remote monitoring machine realize point-to-point communication through the network port, adopting a typical C / S structure, the client (r...
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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 a human machine interface (HMI) 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 equipme...
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IPC IPC(8): H04L29/06H04L29/08G06F3/048
Inventor 侯倩董贝韩春江尹军肖明
Owner NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD