Device for accurately measuring resistance of generator winding

Abstract

The invention discloses a device for accurately measuring the resistance of a generator winding in the technical field of generator winding resistance measurement, which comprises a rotor, a secondary winding and a main winding in a generator, and the positive and negative electrodes of the main winding are connected to the outside of the generator through two non-interfering electric connecting wires, the positive electrode and the negative electrode of the secondary winding are connected with two non-interfering electric connecting wires through an automatic voltage regulator in the generator, multiple generator winding resistance values can be measured at the same time, a shell of the generator does not need to be disassembled and assembled during measurement each time, use is safer, the device is simple in test, operation can be completed by one person, real-time data of the generator in a non-generating state can be timely measured, and the measured data is more accurate; and meanwhile, through the controller and a plurality of display screens, measured data can be recorded and looked up, so that the device is more convenient to use, and the resistance value can be measured immediately when the generator is powered off.

Description

technical field [0001] The invention relates to the technical field of generator winding resistance measurement, in particular to an accurate measurement device for generator winding resistance. Background technique [0002] When the generator leaves the factory, repairs, overhauls or detects the fault of the damaged generator, it may be necessary to detect the resistance of the generator winding to judge the current performance of the generator and the fault of the generator. [0003] The DC resistance of the stator winding includes two parts: the bar copper conductor resistance, the welding joint resistance and the lead wire resistance. Measuring the DC resistance of the generator stator winding can find defects such as connection errors and broken wires that may occur during the manufacturing or overhaul of the winding. In addition, the poor contact of the welding head (such as virtual welding) caused by process problems, especially after being subjected to electromotive...

AI Technical Summary

Problems solved by technology

[0005] However, such a measurement method is very cumbersome, and requires high proficiency of the operator. It needs to be disassembled quickly, and the measurement error is relatively large. In addition, the rear cover of the generator needs to be removed when the equipment is running, which poses a safety hazard.

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