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Switch cabinet intelligent monitoring and expert diagnosis system

A technology of intelligent monitoring and expert diagnosis, applied in measuring devices, special data processing applications, instruments, etc., can solve problems such as ambiguity, uncertainty, and difficulty in having accurate mathematical models, and achieve strong resistance to strong electrical interference, high stability effect

Inactive Publication Date: 2015-04-22
SHENZHEN POWER SUPPLY BUREAU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The switchgear itself, the control object of the switchgear and the power network composed of the switchgear all have the complexity, uncertainty and ambiguity of the physical process, and it is difficult to have an accurate mathematical model

Method used

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  • Switch cabinet intelligent monitoring and expert diagnosis system
  • Switch cabinet intelligent monitoring and expert diagnosis system
  • Switch cabinet intelligent monitoring and expert diagnosis system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The system described in the present disclosure includes an integrated intelligent monitoring device and an expert diagnostic device;

[0016] The integrated intelligent monitoring device realizes the collection and unified processing of electrical signals, temperature signals and mechanical characteristics, and establishes a state monitoring information database for the whole life cycle of the switchgear;

[0017] The expert diagnosis device is an artificial intelligence system composed of professional knowledge of switchgear combined with a monitoring data database, and adopts the inference mechanism of switchgear failure to find early fault signals of switchgear to find early fault signals of switchgear.

[0018] The switchgear integrated intelligent monitoring integration system realizes the seamless integration between functional units, while monitoring the temperature signal of the switchgear, the secondary current signal, the control voltage signal and the mechanic...

Embodiment 2

[0031] The integrated intelligent monitoring device includes a laser semiconductor temperature sensor device, and the laser semiconductor temperature sensor device includes a laser temperature control circuit and a laser semiconductor temperature sensor packaging unit to realize long-term stable monitoring of the temperature of the switch cabinet.

[0032] When the laser semiconductor sensor is short-circuited or disconnected in the switch cabinet, the current surge in a short period of time leads to an instantaneous increase in temperature, and the sensor meets the measurement and monitoring requirements; the temperature change environment will cause the laser to drift, resulting in inaccurate measurement; research on lasers in The temperature drift curve under the temperature environment of the switchgear corrects the temperature drift of the laser through the compensation algorithm circuit, so as to realize the stable output of the optical signal of the laser.

[0033]The sw...

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Abstract

The invention provides a switch cabinet intelligent monitoring and expert diagnosis system. The system comprises an integral intelligent monitoring device and an expert diagnosis device, wherein the integral intelligent monitoring device collects electric signals, temperature signals and mechanical properties, performs unified processing on the electric signals, temperature signals and mechanical properties, and builds a switch cabinet full life circle condition monitoring information database, the expert diagnosis device is an artificial intelligent system which is built according to switch cabinet professional knowledge and a database of monitoring data, and a switch cabinet fault inference mechanism is used for discovering early fault signals of the switch cabinet.

Description

technical field [0001] The invention belongs to the technical field of electric power system intelligent substations, and in particular relates to an intelligent monitoring and expert diagnosis system for a switchgear. Background technique [0002] High-voltage switchgear is one of the key equipment that affects the safe and stable operation of the power grid, especially the large number and variety of 10KV medium-voltage switchgear. The main reasons for the failure of the 10KV medium voltage switchgear are: burnt opening and closing coils, operation jams, component failures, temperature rise failures, and air leakage in the vacuum interrupter. Among them, failures caused by mechanical and heating factors accounted for as high as 83.3%. At present, there are many types of switchgear monitoring, such as temperature monitoring, current and voltage monitoring, partial discharge monitoring, mechanical characteristic monitoring and so on. These monitoring devices are installed ...

Claims

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Application Information

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IPC IPC(8): G06F17/30G01D21/02
Inventor 张欣黄荣辉向真仝芳轩张宁
Owner SHENZHEN POWER SUPPLY BUREAU
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