A kind of electromagnetic compatibility test method of transformer embedded sensor
A technology of electromagnetic compatibility and testing method, which is applied in the direction of electromagnetic field characteristics and testing dielectric strength, etc., can solve the problems of being less severe than transformers, not considering transformers, not considering sensor media, etc., to achieve improved sealing and easy maintenance Effect
Active Publication Date: 2022-07-12
XI AN JIAOTONG UNIV
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Problems solved by technology
These tests stipulated in the GB / T 17626 series of standards are general tests, without considering such extreme scenes inside the transformer, the severity is far less than the electromagnetic field inside the transformer
In addition, the current electromagnetic compatibility tests are carried out directly in the air, without considering the medium in which the sensor is used in actual use, such as the internal sensor of an oil-immersed transformer is immersed in transformer oil
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[0038] The present invention will be further described in detail below with the accompanying drawings and specific embodiments, which are to explain rather than limit the present invention.
[0039] The electromagnetic compatibility test method of the transformer embedded sensor of the present invention includes:
[0040] Place the sensor to be tested in an insulated sensor accommodating device, the sensor accommodating device is sealed and filled with insulating medium, lead the power line and signal line of the sensor to be tested out of the sensor accommodating device, and connect the power line to the sensor power supply, which can be EUT The power supply and signal lines are connected to the signal processing and analysis system, and the following tests are carried out respectively:
[0041] Power frequency magnetic field immunity test: such as figure 1 , place the sensor receiving device to be tested in the center of the rectangular coil, connect the rectangular coil to...
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The invention discloses an electromagnetic compatibility testing method of a transformer embedded sensor, which belongs to the technical field of electric equipment state detection. By sealing and filling the insulating medium in the insulating sensor accommodating device, and placing the sensor to be measured in the sensor accommodating device, the actual working scene of the sensor can be better simulated; Frequency magnetic field immunity test, surge immunity test, electrical fast transient burst immunity test and power frequency electric field and pulse electric field immunity test, so as to test the electromagnetic compatibility of the sensor and investigate the protection of the sensor whether the requirements are met. The invention can better simulate the actual working scene of the sensor, and according to the characteristics of the electromagnetic field inside the transformer, carry out the relevant electromagnetic compatibility test on the transformer embedded sensor to meet the actual needs.
Description
technical field [0001] The invention belongs to the technical field of electric equipment state detection, and in particular relates to an electromagnetic compatibility testing method of a transformer embedded sensor. Background technique [0002] In recent years, with the profound changes in energy structure and production methods around the world, many countries in the world are starting to build smart grids. The most intuitive embodiment is the intelligent substations featuring intelligent automation, integration, and digital informatization, which are in a leading position in the world. . Smart substations are smart because of the use of a large number of sensors and corresponding algorithms. However, with the large-scale use of sensors, the electromagnetic compatibility problems of sensors have gradually emerged, especially the electromagnetic compatibility problems of sensors inside power equipment. Therefore, solving the electromagnetic compatibility problem of the ...
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IPC IPC(8): G01R29/08G01R31/12
CPCG01R29/08G01R31/12
Inventor 李江涛田星辰张伯昱马驰严泽鑫孙子涵赵政何双徐凯宏戴志锋梅家葆
Owner XI AN JIAOTONG UNIV