Measuring device for transformer moisture content based on PDC/FDS dielectric response method

Abstract

The invention belongs to the technical field of transformer ageing and particularly relates to a measuring device for transformer moisture content based on a PDC / FDS dielectric response method. Two oil sample cups with the same volume are arranged in an iron box, which are used for holding transformer oil samples to be measured of the same batch, wherein a test electrode is directly connected with a conductive rod in each oil sample cup. The upper and lower ends of the oil sample cup are provided with oil sample cup lids. The bottom of the oil sample cup is provided with an oil sample cup groove, and the lower end of the oil sample cup groove is connected with the device case. The bottom of the oil sample cup groove is provided with a through hole used for making the lower end of the conductive rod pass through the through hole and connected with a pressure wire. A measuring terminal clamp is arranged on the conductive rod, and the tail end of the measuring terminal is connected with an input end of a control circuit of a PDC / FDS measuring system in a test circuit through a measuring wire. An output end of the control circuit of the PDC / FDS measuring system is connected with an input end of an input and output client through a COM interface data cable. The measuring device for the transformer moisture content based on the PDC / FDS dielectric response method has the advantages that the test time can be greatly reduced and the comprehensive frequency domain can be ensured.

Description

technical field [0001] The invention belongs to the technical field of transformer aging, and in particular relates to a transformer water content measuring device based on a PDC / FDS dielectric response method. Background technique [0002] Moisture in oil-immersed power transformers has a serious impact on the electrical and mechanical life of the transformer insulation system, and accelerates the aging of oil-paper insulation materials, endangering the safe operation of transformers. Dielectric measurement methods are currently the main application methods for transformer oil-paper insulation diagnosis, but There are defects such as long time consumption or insufficient frequency domain, and there is currently a lack of simple and efficient water content measurement devices in transformers. Contents of the invention [0003] Aiming at the technical problems existing in the above-mentioned prior art, the present invention provides a transformer water content measurement d...

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Problems solved by technology

[0002] Moisture in oil-immersed power transformers has a serious impact on the electrical and mechanical life of the transformer insulation system, and accelerates the aging of oil-paper insulation materials, endangering the safe operation of transformers. Dielectric measurement methods are currently the main application methods for transformer oil-paper insulation diagnosis, but There are defects such as long time consumption or insufficient frequency domain, and there is currently a lack of simple and efficient water content measurement devices in transformers

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