Discussion on the method of 390H generator rotor demagnetization

Abstract

Abstract:

To solve the magnetization problem of journal, sliding ring, fan disk of 390H type rotor journal, sliding ring, fan disk central ring and other parts, the causes were analysed. At the scene of the demagnetization short time limit, the insufficient capacity of ac voltage regulator, steam turbine side guard ring did not pull out the conditions, comprehensive the direct current demagnetization method and ac demagnetization method is adopted to be magnetized parts separately demagnetization, demagnetization effect is good, completely eliminated the generator bearing damage, journal electric burns safe hidden trouble.

Key words:

">">generator；rotor；magnetization；DC demagnetization；AC demagnetization">

WANG Zhongming.

Discussion on the method of 390H generator rotor demagnetization

[J]. Huadian Technology, 2017, 39(3): 21-24.

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Discussion on the method of 390H generator rotor demagnetization

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