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The partial discharge phenomenon of electrical equipment will have varying degrees of impact on the electrical equipment itself and the power grid, and even lead to equipment scrapping and grid collapse. Therefore, early partial discharge monitoring of electrical equipment can accurately grasp the operating status of the equipment, which is timely and effective. The elimination of hidden troubles of equipment failures and the elimination of equipment failures in the budding state play a vital role in ensuring the safety of equipment and the power grid itself.
There are many methods for partial discharge detection of electrical equipment, such as: pulse current method, DGA method, ultrasonic detection method, RIV method, optical measurement method, radio frequency detection method and chemical method. Various detection methods have their own strengths, but in comparison, the ultrasonic detection method is simple and easy to use, which is very suitable for daily equipment inspection and real-time grasp of the operating status of electrical equipment. Common partial discharge faults of electrical equipment generally include: corona, arc and electric tracking. Corona and initial electric traces will not generate heat, and the high ambient temperature will also conceal these phenomena. Daily infrared, so infrared and ultrasonic methods can be used for testing; thermal imaging cameras cannot detect, but it will produce Ultrasonic signals can be detected at a long distance with an ultrasonic partial discharge inspection instrument; electric arcs and serious electric traces can also generate high heat while generating ultrasonic waves. However, when the local discharge occurs inside the equipment, it cannot be detected by infrared methods. Ultrasonic partial discharge inspection instrument can be used for testing on the surface or joint surface of electrical equipment.
TKJF-2000 ultrasonic partial discharge inspection instrument is a detection device that collects abnormal ultrasonic signals of power lines and analyzes them through software to diagnose hidden troubles of power lines. This device is to realize the location and fault type of the hidden trouble in the state of power failure. The device collects ultrasonic abnormal signals through ultrasonic detectors (ultrasonic sensors) and transmits them to the host. At the same time, the built-in analysis software of the host accurately diagnoses the type and severity of the fault, and converts them into audible sound signals and waveform output to help inspection The personnel accurately discover hidden dangers of line faults, prevent the occurrence of malignant faults, avoid unnecessary power outages, improve power supply reliability, and at the same time improve the work efficiency of inspectors and reduce the labor intensity of inspectors.
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