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Fault removal operating method for high-voltage frequency converter

A high-voltage inverter and troubleshooting technology, applied in the field of high-voltage inverters, can solve the problems of irregular faults, time-consuming and labor-intensive troubleshooting, etc., to shorten the troubleshooting time, improve the utilization rate, and reduce the frequency of common accidents Effect

Inactive Publication Date: 2014-11-05
INNER MONGOLIA BAOTOU STEEL UNION
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AI Technical Summary

Problems solved by technology

Since the instruction manual is not combined with the actual situation on site, and the faults have no rules to follow, there is no way to start after the high-voltage inverter fails, and it takes time and effort to troubleshoot the fault

Method used

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Embodiment Construction

[0039] The present invention analyzes and refines the faults that have occurred since the operation of the high-voltage frequency converter, and analyzes the common faults of the high-voltage frequency converter through practical summary to obtain a set of economical and effective high-voltage frequency converter common fault handling methods and high-voltage frequency converter maintenance methods. The common faults of high-voltage inverters include three situations, the high-voltage inverter cannot start after power supply, minor fault alarm, and major fault alarm. The following is a detailed description of the process of troubleshooting the three types of faults according to the high-voltage inverter troubleshooting operation method.

[0040] 1. The high-voltage inverter cannot be started after being powered on.

[0041] (1) Check whether the operating power switch of the high-voltage inverter is turned on, and check whether the UPS is turned on within the interval of the hi...

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Abstract

The invention discloses a fault removal operating method for a high-voltage frequency converter. The method comprises the steps that when the high-voltage frequency converter can not be started after being powered on, whether an operation power source switch of the high-voltage frequency converter is connected or not is checked, whether a UPS is connected within an interval of a controller of the high-voltage frequency converter or not is checked, if the operation power source switch and the UPS are not connected, the operation power source switch and the UPS are connected, and the system resets after a fault of the high-voltage frequency converter is removed; when a light fault alarm is given, whether the light fault alarm is the cabinet door interlocking alarm or the transformer over-temperature alarm or not is checked; after the fault is removed, a fault indicator light should be turned off; when a heavy fault alarm is given, whether the heavy fault is a power unit optical fiber fault or a power unit overvoltage fault or a high-voltage frequency converter overcurrent fault or not is checked, the system resets after the fault is removed, and the high-voltage frequency converter is restarted. By the application of the fault removal operating method, the fault processing time is greatly shortened and the utilization rate of the high-voltage frequency converter is improved.

Description

technical field [0001] The invention relates to a high-voltage frequency converter technology, in particular to a high-voltage frequency converter troubleshooting operation method. Background technique [0002] As one of the energy-saving projects of our factory, the high-voltage frequency converters of 8# Furnace A and B blowers have been in operation for 15 months, and have produced considerable economic benefits, saving nearly 900,000 yuan in electricity costs. But its failure rate cannot be ignored, and it will directly affect the economic benefits of our factory. Therefore, how to maximize the operating cycle of high-voltage inverters and quickly eliminate common faults of high-voltage inverters is particularly important. [0003] Since the operation of the high-voltage inverters of the 8# furnace A and B blowers, there have been 19 failures in total, including 12 power unit fiber failures, 5 power unit overvoltage failures, and 2 high-voltage inverter overcurrent fail...

Claims

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Application Information

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IPC IPC(8): H02M1/32
Inventor 康凯
Owner INNER MONGOLIA BAOTOU STEEL UNION
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