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Ultrasonic based detection method of transformer discharge

A detection method, ultrasonic technology, applied in the direction of using acoustic measurement for testing, testing dielectric strength, etc., can solve the problems of insensitivity to faults, unstable data changes, slow response, etc., achieve real-time remote monitoring, and the method is simple and easy , the effect of good application prospects

Inactive Publication Date: 2016-11-23
STATE GRID CORP OF CHINA +1
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Problems solved by technology

For example, the dissolved gas analysis method or the oil gas analysis method can monitor the partial discharge state of the transformer through the oil and gas components. However, this method responds slowly, is not sensitive to faults, and the data changes are unstable. intensity

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  • Ultrasonic based detection method of transformer discharge
  • Ultrasonic based detection method of transformer discharge
  • Ultrasonic based detection method of transformer discharge

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Embodiment Construction

[0031] Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0032] figure 1 It is a schematic flow diagram of the method of the present invention. The method is based on ultrasonic signal detection to achieve transformer fault monitoring and fault location. In the method, ultrasonic sensors, signal acquisition and processing devices, signal remote transmission devices, alarm devices, and equipment power supply devices are used And a remote terminal; the number of ultrasonic sensors is multiple, and the signal collection points are distributed on the transformer to collect the ultrasonic signals inside the transformer; the signal collection and processing device receives the acoustic signals transmitted by the ultrasonic sensors, and performs Processing; the signal remote sending device sends the processed data to the remote terminal; the alarm device is used to implement failure alarms, the powe...

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Abstract

The invention relates to an ultrasonic based detection method of transformer discharge, and belongs to the technical field of power equipment detection. The method comprises the following steps: S1, ultrasonic sensors detect ultrasonic signals of each monitoring point of a transformer; S2, a signal acquisition and processing device receives acoustic signals transmitted by the ultrasonic sensors, and processes the signals; S3, the signal acquisition and processing device judges whether the transformer has a fault or not according to processed data; S4, if the transformer has no fault, a system continues carrying out real-time monitoring; if the transformer has the fault, a signal remote transmitting device sends fault information to a remote terminal, and an alarm device is started; S5, the remote terminal receives the fault information, and a manager deals with the fault. The method provided by the invention is simple and feasible, can well carry out real-time remote monitoring on the discharge fault of the transformer and is convenient to manage, and further has very good application prospects.

Description

Technical field [0001] The invention belongs to the technical field of power equipment detection, and relates to an ultrasonic-based transformer discharge detection method. Background technique [0002] Power transformers occupies a large proportion of the transmission and substation network, and its importance is self-evident. Once the transformer fails to be used due to sudden failure, not only will its economic loss be huge, but also the production and life of people will be caused by the shutdown and power failure. Inconvenience will cause social losses that cannot be underestimated. On the contrary, if the precursors of serious failures can be discovered in advance and planned maintenance and repair measures can be taken, the possible economic losses and social impacts can be avoided. [0003] Practice has shown that the main fatal faults of the transformer, such as partial discharge and overheating, can be detected by different technical methods to varying degrees. For exam...

Claims

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/1209
Inventor 席世友文小飞梁健杨滔
Owner STATE GRID CORP OF CHINA
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