Method for Fault Analysis of High-Voltage Frequency Converter
A high-voltage inverter and fault analysis technology, which is applied in the direction of instruments, measuring electrical variables, and measuring devices, can solve the problems of users' normal production impact, complex load operation conditions, and long maintenance time of high-voltage inverters, and shorten the maintenance cycle. , low cost and easy maintenance
Active Publication Date: 2018-10-19
ZHUZHOU NAT ENG RES CENT OF CONVERTERS
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[0002] After years of development, high-voltage frequency converters have been widely used in industries such as electric power, metallurgy, cement, and machinery manufacturing. However, high-voltage frequency converters are complex power electronic devices, and their fault conditions are usually diverse and complex. fault maintenance brings greater pressure
At present, in the maintenance process of high-voltage inverters, the status of the high-voltage inverters is usually monitored through the host computer, such as voltage, current, frequency, and fault status. It is caused by various internal and external reasons, so it is impossible to accurately analyze the cause of the fault only through the characterization fault of the frequency converter. It will also lead to long maintenance time for high-voltage inverter equipment, which will seriously affect the normal production of users
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[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.
[0025] Such as figure 1 As shown, this embodiment is used to implement a method for fault analysis of a high-voltage frequency converter, and the steps include:
[0026] 1) Control data cache: Acquire the control data of the target high-voltage inverter within a specified period of time during operation at a preset frequency for caching. If the target high-voltage inverter fails, go to step 2), otherwise return to step 1);
[0027] 2) Fault recording: store the control data cached in step 1) as fault recording data, collect and output the stored fault recording data;
[0028] 3) Fault analysis: receive the fault recording data collected in step 2), and analyze the fault of the target high-voltage inverter according to the fault recording data.
[0029] This em...
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The invention discloses a method for achieving fault analysis of a high-voltage frequency converter. The method comprises steps of: 1) acquiring and caching the control data of a target high-voltage frequency converter within an assigned time segment in operation by using preset frequency, and switching to the step 2) if the target high-voltage frequency converter is faulted or returning back to the step 1) if not; 2) storing the control data cached in the step 1) which is used as fault recording data, and acquiring and outputting the stored fault recording data; and 3) receiving the fault recording data acquired in the step 2) and analyzing the fault of the target high-voltage frequency converter according to the fault recording data. The method analyzes the fault in combination with the control data of the faulted high-voltage frequency converter, and is simple in implementing, low in cost, high in intellectualization degree, and high in fault analysis efficiency and precision.
Description
technical field [0001] The invention relates to the technical field of maintenance of high-voltage frequency converters, in particular to a method for realizing fault analysis of high-voltage frequency converters. Background technique [0002] After years of development, high-voltage frequency converters have been widely used in electric power, metallurgy, cement, machinery manufacturing and other industries, but high-voltage frequency converters are complex power electronic devices, and their fault conditions are usually diverse and complex. Fault maintenance has brought great pressure. At present, in the maintenance process of high-voltage inverters, the status of the high-voltage inverters is usually monitored through the host computer, such as voltage, current, frequency, and fault status. It is caused by various internal and external reasons, so it is impossible to accurately analyze the cause of the fault only through the characterization fault of the frequency conver...
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IPC IPC(8): G01R31/00
Inventor 梁文超曹洋彭勃陈孟君黄迪肖伟刘永丰何伟孙茂
Owner ZHUZHOU NAT ENG RES CENT OF CONVERTERS