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Title:
ROTOR CENTER OFFSET DETECTION METHOD AND APPARATUS, STORAGE MEDIUM, AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/063294
Kind Code:
A1
Abstract:
A rotor center offset detection method and apparatus, a storage medium, and a device. Said detection method comprises: acquiring, when a unit works in different working conditions, a rotation frequency vibration intermediate quantity of a stator core, a center offset intermediate quantity of a rotor and a run-out intermediate quantity of a generator pilot bearing (110); performing surface fitting on different working condition data of the unit and the corresponding rotation frequency vibration intermediate quantity, center offset intermediate quantity and run-out intermediate quantity, so as to obtain three aggregation data surfaces having boundaries, and calculating a rotation frequency vibration feature value, a center offset feature value and a run-out feature value according to the acquired rotation frequency vibration intermediate quantity, center offset intermediate quantity and run-out intermediate quantity at the current time point and a mean value smoothing algorithm (120); and determining a center offset early warning value of the rotor according to the three aggregation data surfaces, the rotation frequency vibration feature value, the center offset feature value, the run-out feature value and a preset threshold (130). According to the detection method, when an offset occurs but does not reach the degree to make the detection device give a warning, an early warning is given in time to protect the safety of the unit.

Inventors:
ZHANG CHONG (CN)
LI TAIBIN (CN)
YAN SHUAI (CN)
YAN TIANCHENG (CN)
Application Number:
PCT/CN2020/118231
Publication Date:
April 08, 2021
Filing Date:
September 28, 2020
Export Citation:
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Assignee:
HUANENG SICHUAN HYDROPOWER CO LTD (CN)
International Classes:
F03B11/00
Foreign References:
CN110714869A2020-01-21
CN107015484A2017-08-04
CN102168966A2011-08-31
CN110134571A2019-08-16
CN1361480A2002-07-31
JP2008209155A2008-09-11
Attorney, Agent or Firm:
KEYCOM PARTNERS, P. C. (CN)
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