Method and device for testing operation status of rectifier circuit thyristor

A technology of operating conditions and testing methods, applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., can solve problems such as design capacity redundancy, fault expansion, etc., achieve intuitive and readable results, avoid power outage operations, and improve efficiency.

Active Publication Date: 2018-01-30
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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  • Method and device for testing operation status of rectifier circuit thyristor
  • Method and device for testing operation status of rectifier circuit thyristor

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[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

A rectification circuit thyristor operating condition testing method and testing device, the method comprising: sampling the voltage at both ends of the thyristor, attenuating the voltage, and performing analog-to-digital conversion on the attenuated voltage; taking the rectification cycle as a single cycle, obtaining multiple The data after analog-to-digital conversion in a single cycle, calculate the maximum average value of the forward peak voltage and the minimum average value of the reverse peak voltage in multiple single cycles, and count the actual voltage value of the thyristor within the predetermined conduction voltage range. The amount of data, based on the amount of data and the single-cycle calculation of the thyristor's single-cycle conduction time; based on the maximum average value, minimum average value, and single-cycle conduction time to determine the operating status of the thyristor, and output the maximum average value, minimum average value, Single cycle conduction time and behavior of the thyristor. The invention can carry out live online test on the rectification system, and at the same time, when the equipment is found to be abnormal, the fault point can be located without powering off the equipment.

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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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/27
Inventor 王玉姣梁占超
Owner YANGJIANG NUCLEAR POWER
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