Error lock-proof function design scheme for intelligent measuring and control device
An intelligent measurement and control device and anti-misoperation locking technology, applied in the direction of program control, computer control, general control system, etc., to achieve the effect of simplifying construction, reducing line connections, and improving safety and reliability
Active Publication Date: 2009-06-24
GUODIAN NANJING AUTOMATION
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Problems solved by technology
The traditional electrical anti-misoperation locking method can no longer meet the requirements, and the microcomputer anti-misoperation locking system, which is the development direction of the comprehensive automation application of substations, needs to be further improved and improved in terms of functions.
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[0019] figure 1 It is a schematic diagram of the intelligent measurement and control device anti-mislocking function data sharing design method of the present invention, figure 2 It is a schematic diagram of the internal realization design method of the anti-misoperation locking function of the intelligent measurement and control device of the present invention. The present invention will be specifically introduced below in conjunction with the accompanying drawings.
[0020] The anti-mistake locking logic in the present invention is realized by writing the expression logic text, and then downloading the logic text to the intelligent measurement and control device through the Ethernet using a special UDP communication protocol. The data sources involved in the logic operation in the logic expression may include the internal data of the device and the data of other external intelligent measurement and control devices. like figure 1 as shown, figure 1 A schematic diagram of ...
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The invention relates to a design method for the anti-mislocking function of an intelligent measurement and control device. By writing the anti-mislocking logic, three flexible configuration operation modes of full-automatic scanning, semi-automatic scanning and remote triggering are realized, and the intelligent measurement and control devices are realized through the network. Data sharing, each device provides 6 sets of hard-locked contact outputs, truly realizing software error prevention + hardware error prevention; the design method includes 11 sub-function modules: semi-automatic scanning operation mode module, hard-lock contact control module, remote trigger operation mode module, Logic operation service interface module, fully automatic scanning operation mode module, real-time database module of this device, logic operation real-time database module, GOOSE communication service module, signal acquisition unit module, UDP communication service module, Ethernet interface module. The invention makes up for the deficiency of traditional anti-error locking, reduces the connection of secondary circuit lines, simplifies construction, and can operate independently to improve the safety and reliability of system operation.
Description
technical field [0001] The invention relates to an anti-mis-locking function technology method of an electric power system, in particular to an anti-mis-locking function technology of an intelligent measurement and control device. The utility model belongs to the technical field of electric power automation. Background technique [0002] In the automatic measurement and control process of substations, switching stations, power plants, metallurgy, and chemical industries, in order to prevent misoperations, the automation system is required to have the anti-misoperation locking function. False locking. Electrical misoperation prevention is a kind of anti-misoperation function based on the secondary operation circuit. It is generally realized by connecting auxiliary contacts of circuit breakers and switches in series on the secondary operation circuit and interlocking with each other. However, the wiring of the secondary circuit is complicated. In addition, the insulation dam...
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IPC IPC(8): G05B19/048
Inventor 龚世敏余华武陈庆旭
Owner GUODIAN NANJING AUTOMATION