Portable measurement instrument for micro water in oil

Abstract

The invention discloses a portable measurement instrument for micro water in oil, belonging to the technical field of transformer monitoring and relating to a device for monitoring the moisture change in transformer oil. The portable measurement instrument for micro water in oil comprises a sensor for micro water in oil, two probes, a ball valve, two analog outputs and a serial output, wherein the sensor for micro water in oil is a high molecular thin-film humidity sensor and provided with a stainless grid protecting device; and the two probes are a temperature measurement probe and a relative humidity measurement probe respectively. The portable measurement instrument for micro water in oil is free from the influence of oil type, oil age and oil temperature, and is firm and reliable in structure and convenient for carrying.

Description

technical field [0001] The invention relates to an auxiliary device of electric power equipment, in particular to a portable measuring instrument for micro-water in oil. Background technique [0002] With the expansion of the structure of the power industry and the continuous improvement of voltage equipment levels, the maintenance of transformers is becoming more and more important, and the measurement of moisture in transformer oil has become a very important part of transformer maintenance. It plays an essential role in the safe operation of the transformer oil. The moisture content has a decisive impact on the insulation of the transformer oil. Excessive moisture content in the oil will accelerate the aging of the insulating material and reduce the insulation, which will lead to the failure of the equipment to operate. Unstable and potentially dangerous, when the moisture content is large, it will cause arcing rings and short circuits in the coil, and even explosions in ...

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Problems solved by technology

The off-line detection of micro-water content in insulating oil in the laboratory is complicated and difficult to control, especially the oil-water separation link is difficult to realize. At the same time, the distance between the transformer and the laboratory is long, the process from oil extraction to detection is complicated and costly, and the real-time performance is poor; online micro-water monitoring It is an effective supplement and perfection of micro-water monitoring in the laboratory

[0003] The patent with the application number CN03225399 discloses a signal transmitter structure for on-line monitoring of transformer gas, which is easy to operate and has high reliability. However, no patent application has been seen for the on-line monitoring and portable measuring instrument for moisture in transformer oil.

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