Load box detection method and device

A detection method and load detection technology, which can be used in measuring devices, measuring electrical variables, instruments, etc., can solve the problems of low accuracy, incomplete test parameters, time-consuming and labor-intensive, etc.

Inactive Publication Date: 2021-05-28
WUHAN PANDIAN TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a load box detection method and device, aiming to solve the technical problems of incomplete test parameters, low accuracy, time-consuming and labor-intensive, poor anti-interference ability and difficult operation in transformer detection in the prior art

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  • Load box detection method and device
  • Load box detection method and device

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Embodiment Construction

[0060] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0061] The solution of the embodiment of the present invention is mainly as follows: through the current booster and the preset current load test circuit, multiple current load detections are performed on the load box of the current transformer to be tested, and the current load detection result is obtained, and the current load detection result is obtained through the booster and the preset voltage The load test circuit performs multiple voltage load detections on the load box of the tested voltage transformer to obtain the voltage load detection result; obtains the current calculation error corresponding to the current load detection result, and according to the difference between the current calculation error and the preset current relative error Judging whether the load box of the tested current transformer is qual...

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Abstract

The invention discloses a load box detection method and device, and the method comprises the steps: carrying out the multi-time current load detection of a detected current transformer load box through a current booster and a preset current load test circuit, and obtaining a current load detection result; performing voltage load detection on the detected voltage transformer load box for multiple times through a voltage booster and a preset voltage load test circuit, and obtaining a voltage load detection result; obtaining a current calculation error corresponding to the current load detection result, and judging whether the detected current transformer load box is qualified or not according to a comparison result of the current calculation error and a preset current relative error; and obtaining the voltage calculation error corresponding to the voltage load detection result, judging whether the detected voltage transformer load box is qualified or not according to the comparison result of the voltage calculation error and the preset voltage relative error, so that the accuracy of measured data can be improved, great convenience is brought to workers, the anti-interference capability is high, the working efficiency of the workers is improved, And the power transmission time of the transformer substation is saved.

Description

technical field [0001] The invention relates to the technical field of load box testing, in particular to a load box testing method and device. Background technique [0002] Voltage transformers and current transformers are important electrical equipment in power systems. They are responsible for the isolation between high and low voltage systems and the conversion of high voltage to low voltage. In the installation, acceptance and technical transformation of substations, transformers are extremely Polarity checking is an essential link for relay protection workers. Wrong connection of polarity can cause measurement and metering devices to fail to read data correctly, and can also lead to protection refusal or misoperation. Therefore, the transformer polarity test is of great importance The power system is of great significance. [0003] There are two commonly used methods for testing the polarity of transformers. The first is to use a comprehensive transformer tester. The ...

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Application Information

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IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 孙军贾芳艳
Owner WUHAN PANDIAN TECH
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