Alternating current and direct current screen self-diagnosis method
An AC-DC, self-diagnosis technology, applied in measurement devices, instruments, signal transmission systems, etc., can solve the problems of inapplicable AC-DC screen system, prolong the working time of equipment with errors, etc., to improve operating efficiency, transmission speed, The effect of reducing the failure rate
Active Publication Date: 2022-03-11
通号(长沙)轨道交通控制技术有限公司
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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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Embodiment 1
[0024] like figure 1 , figure 2 , image 3 As shown, an AC / DC screen self-diagnosis system includes a 5G master control unit. The 5G master control unit monitors the AC / DC screen cabinet, AC switch and DC switch operating status, temperature and humidity control in the cabinet, and battery health. The switches in the AC and DC screens are all equipped with auxiliary contact accessories. Temperature and humidity sensors, controllers and video monitoring equipment are installed in the AC, DC screens and battery screens. The front and rear doors of the AC, DC screens and battery screens are all equipped with auxiliary contacts. The travel switch is electrically connected to the above-mentioned hardware through the 5G main control station to realize monitoring. The 5G main 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 switching input and output module. The modules ...
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The invention discloses an AC / DC screen self-diagnosis method. Comprising the following steps: presetting an equipment safety value, a safety time threshold value and self-resetting times; starting the 5G general control unit to monitor the state of the equipment in real time, calculating dynamic safety time according to the monitored data, and comparing a dynamic safety time result with a safety time threshold value; if the calculation result is greater than the set safety time threshold, confirming that the equipment is abnormal, otherwise, returning to continue calculation; querying a fault knowledge base for the determined abnormal equipment through a 5G network to judge the fault type and grade; determining whether to cut off the equipment according to the grade condition; carrying out self-resetting on the cut-off fault equipment, and counting the self-resetting times; and judging the self-resetting times, if the resetting is successful within the set times, the equipment normally runs, and otherwise, alarming if the self-resetting times exceed the set times. According to the method, the dynamic safety time and the self-resetting frequency serve as the fault-tolerant basis of the AC / DC screen equipment fault, and the method is simple and reliable.
Description
technical field [0001] The invention relates to the technical field of power equipment operation monitoring, in particular to a self-diagnosis method for AC and DC screens. Background technique [0002] The AC and 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 AC out, and is generally used in conjunction with the DC panel to provide power distribution for the DC panel and the power distribution room. The DC panel converts the AC into DC to charge the battery. When the mains AC power supply is cut off, the battery pack supplies power to the busbar to provide power for the high-voltage opening and closing mechanism, the control system and the comprehensive protection. As an important secondary equipment in substations (distribution) substations, substations and power plants in the power system, AC and DC power panels provide power for control loads, power loads, and accide...
Claims
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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