Winding insulation electric-thermal-mechanical combined accelerated aging device and method

Abstract

A winding insulation electric-thermal-mechanical combined accelerated aging device comprises a drying oven, a vibration generating device, an electrode aging unit and a salt mist generating device, wherein the vibration generating device and the electrode aging unit are arranged in the drying oven, the output end of the salt mist generating device right faces the electrode aging unit, and the control ends of the drying oven, the vibration generating device and the salt mist generating device are connected with a control module. The input end of the electrode aging unit is connected with a high-frequency square-wave power supply, a salt mist sensor and a vibration sensor which are connected with the control module are respectively arranged in the drying oven and on the vibration generating device, and an electrode to be processed is arranged in the electrode aging unit. According to the invention, the sea atmospheric environment is completely simulated through the salt mist generation device, and complex environmental factors are considered in the sample aging process; the special drying oven is designed, titanium alloy with a PTFE coating is selected as metal in the drying oven, and the corrosion resistance, the high temperature resistance and the metal fatigue resistance of the drying oven are improved; the unique aging electrode unit can be used for aging the same group of samples at the same time, so that the aging cost is reduced, and the aging efficiency is improved.

Description

technical field [0001] The invention relates to a technology in the field of wind power generation, in particular to a winding insulation electrical-thermal-mechanical combined accelerated aging device for simulating sea conditions and suitable for offshore wind power generators. Background technique [0002] During the actual operation of large-scale offshore wind turbines, they have been subjected to the combined effects of electric field, thermal field, mechanical force and harsh environment for a long time. The insulation materials of stator windings are prone to aging or even breakdown, which seriously threatens the safe and reliable operation of the generator. It is very important to study its aging process. However, on the one hand, the existing aging devices only combine the two factors of electricity and heat for aging, and cannot fully simulate the electric field, thermal field, mechanical force and harsh environment that the insulation is subjected to during norma...

AI Technical Summary

Problems solved by technology

However, on the one hand, the existing aging devices only combine the two factors of electricity and heat for aging, and cannot fully simulate the electric field, thermal field, mechanical force and harsh environment that the insulation is subjected to during normal operation; on the other hand, , the aging device is basically designed with the wire rod body as the object, and its manufacturing cost is high and the aging efficiency is low

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