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A rectification circuit thyristor operation status test method and a test device

A technology for operating conditions and testing methods, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as fault expansion, design capacity redundancy, etc., to avoid power outages, the results are intuitive and readable, and the effect of improving efficiency

Active Publication Date: 2015-11-04
YANGJIANG NUCLEAR POWER +2
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Problems solved by technology

[0002] During the operation of the three-phase fully-controlled rectifier, if a single thyristor fails, due to the redundancy of its design capacity, it can still meet the power supply needs of the equipment and cannot be detected. If a single thyristor fails to be detected, the fault will further develop Expansion, and currently there is no test device dedicated to testing the working condition of thyristors

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  • A rectification circuit thyristor operation status test method and a test device
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Embodiment Construction

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0028] refer to figure 1 , is a schematic structural view of a preferred embodiment of the rectifier circuit thyristor operating condition testing device of the present invention;

[0029] The rectification circuit thyristor operating condition testing device of the present invention comprises a voltage attenuation module, an analog-to-digital conversion module, a microcontroller module, a display module and a power supply module. Preferably, an alarm module is also included.

[0030] The voltage attenuation module, analog-to-digital conversion module, microcontroller module, and display module are connected in sequence, and the power supply module is connected to the voltage attenuation module, analog-to-digital conve...

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Abstract

Provided are a rectification circuit thyristor operation status test method and a test device. The method comprises the following steps: voltages at the two end of a thyristor are subjected to sampling; the voltages are further subjected to attenuation processing; analog-to-digital conversion is carried out on the attenuated voltages; data after the analog-to-digital conversion in a single period is obtained with a rectification period as one single period; the maximum mean value of forward peak voltage in a plurality of periods and the minimum mean value of inverse peak voltages are calculated; statistical analysis of the data bulk of the actual magnitude of voltage of the thyristor in a predetermined conduction voltage interval is carried out; the single period conduction time of the thyristor is calculated on the basis of the data bulk and the single period; the operation status of the thyristor is determined on the basis of the maximum mean value, the minimum mean value and the single period conduction time; and then the maximum mean value, the minimum mean value, the single period conduction time and the operation state of the thyristor are output. According to the invention, live-line on-line tests can be carried out on a rectification system. Meanwhile, when equipment abnormity is found, fault points can be located in a condition that power cutting of the equipment is not carried out.

Description

technical field [0001] The invention relates to the technical field of thyristor three-phase full-control rectification, in particular to a method for testing the operation status of a thyristor in a rectifier circuit, which can test the operation status of the thyristor and quickly locate the fault point when an abnormality or failure of the rectifier is found, and test device. Background technique [0002] During the operation of the three-phase fully-controlled rectifier, if a single thyristor fails, due to the redundancy of its design capacity, it can still meet the power supply needs of the equipment and cannot be detected. If a single thyristor fails to be detected, the fault will further develop Expand, and there is no test device specially used to test the working condition of thyristors. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method that can test the operation status of the thyristor when the...

Claims

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Application Information

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IPC IPC(8): G01R31/27
Inventor 王玉姣梁占超
Owner YANGJIANG NUCLEAR POWER
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