Device and method for monitoring body noise of oil-immersed transformer
A technology of oil-immersed transformers and body noise, which is applied to measuring devices, vibration measurements in solids, instruments, etc., can solve problems such as interference, easy attenuation and distortion of sound transmission, and environmental noise effects, and achieve the goal of reducing interference Effect
Inactive Publication Date: 2018-01-12
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0004] In order to solve the existing technology, in the monitoring of the transformer body noise, the environmental noise will affect the monitoring, and at the same time, it is easy to produce attenuation and distortion interference during the sound transmission process, and an oil-immersed transformer body noise monitoring device is proposed. method
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[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] refer to figure 1 , figure 1 A structural diagram of a noise monitoring device for an oil-immersed transformer body provided in an embodiment of the present invention, the body noise monitoring device for an oil-immersed transformer includes: a pipeline 1, an acoustic sensor 2, and a signal acquisition and analysis system 3, the said One end of the pipeline is ...
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The invention provides a device and a method for monitoring the body noise of an oil-immersed transformer. The device comprises a pipeline, a sound sensor and a signal acquisition and analysis system.One end of the pipeline is a closed end, and the other end of the pipeline is an opened end. The opened end is connected with the oil tank of the oil-immersed transformer. The sound sensor is installed inside the pipeline. The sound sensor is connected with the signal acquisition and analysis system outside the pipeline. The device provided by the invention is provided with the pipeline connectedwith the oil tank of the oil-immersed transformer, and the sound sensor is arranged in the pipeline. The sound sensor is used for receiving the operation sound of the oil-immersed transformer and monitoring the state of the oil-immersed transformer. Therefore, the interference of ambient noises on the noise monitoring of the transformer body can be greatly reduced. Meanwhile, the propagating attenuation and the propagating distortion of the body noise of the oil-immersed transformer during the receiving process are reduced.
Description
technical field [0001] The invention relates to the technical field of on-line monitoring of power transformers, and more particularly, to a device and method for monitoring noise of an oil-immersed transformer body. Background technique [0002] On-line monitoring is the foundation and basis of condition-based maintenance of power equipment, and has attracted more and more attention from the power industry. For oil-immersed transformers, there are various monitoring technologies such as monitoring of dissolved gas in oil, partial discharge monitoring, temperature monitoring, and water content monitoring. However, the generation of gas, partial discharge, changes in temperature, changes in water content, etc., are often caused by changes in the state of the transformer, or even failures. This means that the monitoring and diagnosis capabilities of the early problems of the existing oil-immersed transformer condition monitoring technology still need to be improved. [0003]...
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IPC IPC(8): G01H1/00
Inventor 卢铃周年光彭继文吴晓文胡胜
Owner STATE GRID CORP OF CHINA