Ultrasound partial discharge diagnostic equipment and method thereof
A diagnostic instrument and ultrasonic bureau technology, applied in the field of ultrasonic partial discharge diagnostic instruments, can solve the problems of being easily interfered by other electromagnetic field sources, difficult to distinguish the partial discharge signal of equipment, etc., achieving complete functions, discovering and solving safety hazards, and measuring accuracy high effect
Inactive Publication Date: 2011-05-18
博扬科仪电气技术(北京)有限公司
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Problems solved by technology
In the prior art, the electromagnetic wave measurement method is often used to detect partial discharge, but the disadvantage of this method is that it is easily interfered by other electromagnetic field sources during the on-site detection process, so it is difficult to distinguish the partial discharge signal inside the equipment
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[0040] figure 1 It is a structural principle diagram of the present invention, as shown in the figure, the ultrasonic partial discharge diagnostic instrument 1 of the present invention includes: a signal acquisition and detection unit 2 and a signal processing display unit 3, and the signal acquisition and detection unit 2 is used to use the ultrasonic sensor ( The ultrasonic signal obtained by the dashed box is collected, and the signal effective value, signal peak value, signal power frequency correlation quantity and signal double power frequency correlation quantity reflecting the faults in the gas-insulated substation, cable terminal and joint are detected. The signal processing and display unit 3 is used to reflect the effective value of the signal, the peak value of the signal, the power frequency correlation of the signal and the double power frequency correlation of the signal transmitted by the signal acquisition and detection unit 2 to reflect the faults in the gas i...
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The invention relates to ultrasound partial discharge diagnostic equipment and a method thereof. The ultrasound partial discharge diagnostic equipment comprises a signal collecting detecting unit and a signal processing and display unit; wherein the signal collecting detecting unit is used for collecting ultrasonic signals obtained by an ultrasound sensor and detecting signal virtual value, signalpeak value and signal power frequency correlation-quantity which can reflect failures of a gas insulation substation, a cable terminal and an adapter; and the signal processing and display unit is used for both processing data of the signal virtual value, the signal peak value and the signal power frequency correlation-quantity which can reflect failures of the gas insulation substation, the cable terminal and the adapter, and displaying failure results. The invention has simple design, complete functions and high disturbance resistance and can accurately detect the virtual value, the peak value and the power frequency correlation-quantity of failed ultrasonic signals so as to find and solve potential safety hazard in time.
Description
technical field [0001] The invention belongs to the technical field of insulation and electrification detection of high-voltage electrical equipment in substations, and in particular relates to an ultrasonic partial discharge diagnostic instrument and method. Background technique [0002] At present, most of the failures that lead to insulation aging of high-voltage electrical equipment such as gas-insulated substations, cable terminals, and joints are accompanied by partial discharge and particle collisions. Both partial discharges and particle collisions will generate tiny ultrasonic signals, and ultrasonic signals reflect A lot of relevant information is obtained, including the relationship between partial discharge and particle collision in the tested equipment and the power frequency electric field, as well as the strength of partial discharge and particle collision itself. Therefore, how to accurately measure the effective value, peak value and power frequency related ...
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IPC IPC(8): G01R31/12
Inventor 闫艺邨于锋汪天星肖拥军
Owner 博扬科仪电气技术(北京)有限公司