Experimental device for measuring winding temperature rise

Abstract

The invention provides an experimental device for measuring winding temperature rise. The device comprises a power box, a voltmeter, a current clamp, a plurality of temperature sensors, a temperaturerecorder and a voltage adjusting knob. An outgoing line of the power box is connected with a terminal of a winding, and the power frequency voltage is transformed and rectified and then provides heating power for the winding; the voltmeter is connected with a terminal of the winding and is used for measuring the voltage of the winding; the current clamp is clamped on the outgoing line of the powerbox and is used for measuring the current of the winding; the plurality of temperature sensors are attached to the winding surface to acquire the winding surface temperature; the temperature recorderis connected with the plurality of temperature sensors and is used for recording the change condition of the winding surface temperature; and the voltage adjusting knob is connected with a voltage regulator in the power box and is used for adjusting the output voltage of the power box. According to the invention, the temperature rise of the winding is accurately measured while the winding is heated, so that the temperature change rule of the winding in the heating process is obtained, and a guarantee is provided for researching the insulating heat-conducting property and the heat exchange ofthe winding.

Description

Technical field [0001] The invention relates to the field of electrical engineering, in particular to an experimental device for measuring temperature rise of windings. Background technique [0002] With the promotion of the concept of high efficiency and energy saving, temperature field analysis has received extensive attention in the industry. At present, the power of motors and transformers continues to increase, and the internal thermal load of devices increases accordingly. Excessive temperature will affect their service life and operational reliability. Numerous studies have shown that the temperature rise at the windings changes the most during the operation of motors and transformers. Therefore, accurate knowledge of the temperature changes of the windings during the operation of motors and transformers is of great significance for further improving performance and for predicting service life and insulation aging. The degree has a key role, and further provides favorable...

AI Technical Summary

Problems solved by technology

At present, the power of motors and transformers continues to increase, and the internal heat load of the devices increases accordingly. Excessively high temperatures will affect their service life and operational reliability

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