The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 2023
Filed:
Aug. 14, 2020
State Grid Shanxi Electric Power Research Institute, Shanxi, CN;
Hua Yu, Shanxi, CN;
Guodong Li, Shanxi, CN;
Wei Wang, Shanxi, CN;
Hong Liu, Shanxi, CN;
Guangqi Mu, Shanxi, CN;
Aimin Wang, Shanxi, CN;
Tao Jin, Shanxi, CN;
Jichong Liang, Shanxi, CN;
Haipeng Wang, Shanxi, CN;
Yansong Li, Shanxi, CN;
Hai Zhang, Shanxi, CN;
Zhumao Lu, Shanxi, CN;
Lu Bai, Shanxi, CN;
Shan Lu, Shanxi, CN;
Yanchun Li, Shanxi, CN;
Xinwei Wang, Shanxi, CN;
STATE GRID SHANXI ELECTRIC POWER RESEARCH INSTITUTE, Taiyuan, CN;
Abstract
A device and method for evaluating long-term operation of a transformer oil pump. An inlet of an oil pump is connected to an outlet of an oil tank through an oil pipe, and an outlet of the oil pump is connected to an inlet of the oil tank through an oil pipe. A pressure gauge is provided on the oil pipe to the inlet and the outlet of the oil pump, respectively. An ultra-high-frequency (UHF) sensor is provided on an inner wall of an oil pipe close to the oil pump. A pressure difference between the oil pipes to the inlet and to the outlet of the oil pump is monitored. A three-phase unbalanced current of a stator winding is monitored. The vibration of the oil pump is monitored. The rotor-to-stator rub is monitored. Based on the above inspection, a long-term health status of the oil pump is determined.