Device and method for identifying abnormal sound source position of UHV transformer
A sound source location and transformer technology, applied in the field of UHV transformers, can solve problems such as the difficulty in achieving satisfactory application results for inspection devices, the inability to accurately determine the location of abnormal noise, and the impact of diagnostic results, and achieve high testing efficiency, convenient testing, and improved The effect of precision
Inactive Publication Date: 2019-05-03
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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Problems solved by technology
However, because the acoustic signal is transmitted and collected in the air, excessive background noise and sound reflection and propagation will affect the diagnostic results, so conventional noise analysis methods cannot accurately determine the location of the abnormal noise
UHV transformer equipment is widely distributed in substations and converter stations and has a large volume. Therefore, inspection devices that are too heavy and consume high power consumption are difficult to achieve satisfactory application results.
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[0032] The present invention will be further described below through specific embodiments with reference to the accompanying drawings. These embodiments are only used to illustrate the present invention and do not limit the protection scope of the present invention.
[0033] Such as figure 1 A schematic diagram of the optimization method of the sound collection sensor 1 array. The composition and arrangement of the sound collection sensor 1 in the sound collection sensor 1 array will have a very large impact on the recognition result. The optimization method adopts a non-equal spaced concentric circle arrangement structure. The foundation of the structure is 8 concentric circles with radii of 0.05 m, 0.09 m, 0.105 m, 0.111 m, 0.117 m, 0.123 m, 0.129 m, and 0.135 m. The circles of 0.05 m and 0.09 m are divided equally with the center of the circle. The intersection of the bisector and the circle is the arrangement point of the sound collection sensor 1. In each bisector of the circ...
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The invention discloses a device and method for identifying the abnormal sound source position of an UHV transformer. The device includes a mounting platform, multiple sound collection sensors mountedon the mounting platform and a camera mounted on a mounting platform center, wherein the sound collection sensors are arranged in a concentric circle at a circle center of the mounting platform center at non-equal spacings, the sound collection sensors and the camera are communicatively connected with a signal processing system, and the signal processing system is capable of obtaining the position of the abnormal sound source according to sound signals collected by the sound collection sensors and an object image signal collected by the camera. The non-equal spacing concentric circle structure is used to optimize spatial arrangement of microphones, a microphone array designed in the way has advantages of convenient testing, high calculation efficiency and accurate structure, and thereby test requirements for accurate and rapid identification of the position of the UHV reactor sound source can be met.
Description
Technical field [0001] The present invention relates to the technical field of UHV transformers, in particular to a device and method for identifying the location of the abnormal sound source of UHV transformers. Background technique [0002] UHV transformer equipment will make a sound when it is running, and the sound contains a large amount of status information of the reactor. When the UHV reactor fails, the sound signal will also change accordingly, and there will be a sound different from the normal working state (abnormal ring). The acquisition of sound signals does not require the use of contact equipment, and has the advantages of flexible and convenient sensor arrangement, no electromagnetic interference, simple measurement, etc., so it is suitable for fault identification and analysis of widely distributed and large number of UHV reactor equipment. However, because the acoustic signal is collected in the air, excessive background noise and sound reflection and propagat...
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IPC IPC(8): G01R31/02G01S5/24
Inventor 邵宇鹰王枭彭鹏袁国刚俞国勤罗潇陈婷
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO