Electromagnetic compatibility test method for embedded sensor of transformer
A technology of electromagnetic compatibility and testing method, applied in the direction of electromagnetic field characteristics, testing dielectric strength, etc., can solve the problems of less severe degree than transformers, not considering transformers, not considering sensor medium, etc., to achieve easy maintenance and improve sealing. Effect
Active Publication Date: 2022-01-18
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
Method used
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[0038] The present invention will be further described in detail with the accompanying drawings and specific embodiments below, which are explanations rather than limitations of the present invention.
[0039] The electromagnetic compatibility testing method of the transformer embedded sensor of the present invention comprises:
[0040] Place the sensor to be tested in an insulated sensor holding device, which is sealed and filled with insulating medium, lead the power line and signal line of the sensor to be tested out of the sensor holding device, connect the power line to the sensor power supply, and the sensor power supply can use EUT The power supply and signal line 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 , put the sensor holding device to be tested in the center of the rectangular coil, the rectangular coil is connected to the...
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The invention discloses an electromagnetic compatibility test method for an embedded sensor of a transformer, and belongs to the technical field of state detection of power equipment. The insulated sensor accommodating device is filled with the insulating medium in a sealed manner, and the to-be-tested sensor is placed in the sensor accommodating device, so that the actual working scene of the sensor can be better simulated; according to the characteristics of the electromagnetic field in the transformer, a power frequency magnetic field immunity test, a surge immunity test, an electrical fast transient pulse train immunity test and a power frequency electric field and pulse electric field immunity test are carried out on an embedded sensor of the transformer, so that the electromagnetic compatibility of the sensor is tested, and whether the protection of the sensor meets requirements is inspected. According to the invention, the actual working scene of the sensor can be better simulated, the related electromagnetic compatibility test is carried out on the embedded sensor of the transformer according to the electromagnetic field characteristics in the transformer, and the actual requirements are met.
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 the energy structure and production methods around the world, many countries in the world are starting to build smart grids. The most intuitive manifestation is the smart substation, which is characterized by intelligent automation, integration, and digital information, and is in an international leading position. . The reason why smart substations are smart is due to the use of a large number of sensors and corresponding algorithms. However, with the extensive use of sensors, the electromagnetic compatibility of sensors has gradually emerged, especially the electromagnetic compatibility of sensors inside power equipment. Therefore, it is of great significance to solve the electromagn...
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Login to View More 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