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A self-diagnosis method for AC and DC panels

An AC/DC self-diagnosis technology, which is applied in the direction of instruments, measuring devices, signal transmission systems, etc., can solve the problems of prolonging the wrong working time of equipment and not being suitable for AC/DC screen systems, so as to improve operating efficiency, reduce failure rates, The effect of increased transmission speed

Active Publication Date: 2022-05-27
通号(长沙)轨道交通控制技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some other products have introduced fault-tolerant mechanisms at this stage, most of them simply prolong the working time of equipment with faults, and the existing methods are not suitable for AC and DC panel systems.

Method used

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  • A self-diagnosis method for AC and DC panels
  • A self-diagnosis method for AC and DC panels
  • A self-diagnosis method for AC and DC panels

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0024] like figure 1 , figure 2 , image 3 As shown in the figure, an AC / DC screen self-diagnosis system includes a 5G master control unit, which monitors the AC / DC screen cabinet, AC switch and DC switch operating status, temperature and humidity control in the cabinet, and battery health. Auxiliary contact accessories are added to the switches in the DC screen, temperature and humidity sensors, controllers and video monitoring equipment are installed in the AC, DC screen and battery screen. The front and rear doors of the AC, DC screen and battery screen are equipped with auxiliary contacts. The travel switch is electrically connected to the above hardware to realize monitoring through the 5G master console. The 5G master control unit includes a 5G communication module, a CPU, an insulation monitoring unit, a DC monitoring unit, an AC monitoring unit, a power supply module, and a digital input and output module. The module supplies power to the 5G communication module, CP...

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PUM

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Abstract

The invention discloses a method for self-diagnosis of an AC and DC panel. It includes the following steps: pre-setting the device safety value, safety time threshold and self-reset times; starting the 5G master control unit to monitor the device status in real time, and calculating the dynamic safety time according to the monitored data, and comparing the dynamic safety time result with the safety time threshold ;If the calculation result is greater than the set safety time threshold, confirm that the device is abnormal, otherwise return to continue calculation; check the fault knowledge base for the determined abnormal device through the 5G network to judge the fault type and level; determine whether to cut off the device according to the level; The last faulty equipment performs self-resetting, and the number of self-resetting times is counted; the number of self-resetting times is judged, and if it is judged that the reset is successful within the set number of times, the device is operating normally, otherwise, an alarm will be issued if the number of times exceeds the set number. The invention uses the dynamic safety time and the self-resetting times as the fault-tolerant basis for the failure of the AC and DC panel equipment, and the method is simple and reliable.

Description

technical field [0001] The invention relates to the technical field of operation monitoring of power equipment, in particular to a self-diagnosis method of an AC and DC screen. Background technique [0002] The AC / DC screen system includes AC screen, DC screen and battery screen. The AC panel is essentially a low-voltage power distribution cabinet, with AC in and out, and is generally used in conjunction with the DC panel to provide power distribution to the DC panel and the power distribution room. The DC screen is to convert the AC into DC to charge the battery. When the AC power of the mains is cut off, the battery pack is used to supply power to the busbar to provide power to the high-voltage switching mechanism, control system and comprehensive insurance. AC and DC power panels are important secondary equipment for substations, substations, and power plants in the power system. They provide power for control loads, power loads, and accident lighting loads. They are the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G08C17/02
CPCG01R31/00G08C17/02
Inventor 邵闻博肖练刘颖斌
Owner 通号(长沙)轨道交通控制技术有限公司