Testing arrangement of oil paper insulation frequency domain spectrum

Abstract

The invention discloses a testing arrangement of an oil paper insulation frequency domain spectrum. An analog output plate and a data acquisition card are inserted in a PCI slot of a computer, and are respectively connected with an analog output card binding post plate and a data acquisition card binding post plate through connection cables. An input terminal and an output terminal of a voltage amplifier are connected with the analog output plate binding post plate and a high voltage terminal of a specimen respectively. Two ends of a resistance voltage divider are connected with the specimen high voltage terminal and the data acquisition card binding post plate respectively. A current input terminal, a voltage output terminal and a control terminal of a current amplifier are connected with a specimen grounding terminal, the data acquisition card binding post plate and the data acquisition card respectively. Grounding terminals of the voltage amplifier, a voltage divider and the current amplifier are connected with a same ground wire. The invention has the advantages of simple operation, accurate measurement, a large amount of obtained information, low cost, no damage of measurement oil paper insulation equipment and a material frequency domain spectrum.

Description

technical field [0001] The invention relates to the field of performance testing of oil-paper insulation, and relates to oil-paper insulation equipment and a material insulation performance testing device. Background technique [0002] Power equipment with oil-paper insulation as the main insulation, such as oil-immersed power transformers, reactors, and transformers, plays an important role in power systems. During long-term operation, due to the joint stress of electricity, heat, machinery, and the environment, the insulation performance of the equipment is likely to gradually deteriorate, resulting in a decrease in its mechanical strength and operational reliability, which in turn causes failures, and even It will cause power interruption and a lot of economic losses. Oil-paper insulation is the main insulation mechanism of oil-immersed power equipment, and its deterioration is irreversible. Once the insulation is damaged or destroyed, it is difficult to restore itself. ...

AI Technical Summary

Problems solved by technology

[0005] The chemical testing methods for oil-paper insulation are generally destructive to oil-paper insulation itself. The two methods of PDC and RVM have long test time, poor anti-interference ability on site, less information obtained, and expensive foreign testing instruments. The present invention The following technical solutions are proposed:

Images