Transformer partial discharge ultrasonic array detection method is a new method with high signal-to-noise ratio and high reliability. But the influence of array number to the direction finding accuracy needs to be fur...
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ISBN:
(纸本)9783038350033
Transformer partial discharge ultrasonic array detection method is a new method with high signal-to-noise ratio and high reliability. But the influence of array number to the direction finding accuracy needs to be further studied. Simulation of direction finding angle with the 15 kinds of sensor array ( 2 x 2 - 16x16 arrangement)under two conditions of the acute azimuth and obtuse azimuth, study of change rule of direction finding accuracy of the different array number, for example of the square planar array sensor, based on an improved MUSIC(Multiple Signal Classification) algorithm. The results show that the direction finding accuracy increases as the array number rises, and The specific error ranges of array sensors of different array number by simulating have some degree of guiding significance in the selection of transformer partial discharge ultrasonic a(r)ray sensor in the field environment.
An amplitude distribution on a linear array antenna can be transformed to element separation distribution. This paper discusses the extension of such a separation-controlled array antenna from one-dimension to two-dim...
详细信息
ISBN:
(纸本)9781728166704
An amplitude distribution on a linear array antenna can be transformed to element separation distribution. This paper discusses the extension of such a separation-controlled array antenna from one-dimension to two-dimensions We study a two-dimensional array antenna composed of plural linear arrays with radial arrangement. The radiation patterns are compared between the amplitude-and separation-controlled arrays in reference to the equivalent parabola antenna. The dependence on the number of linear arrays is presented.
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