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:
Aug. 23, 2022
Filed:
Oct. 27, 2020
State Grid Jiangsu Electric Power Co., Ltd., Nanjing, CN;
State Grid Jiangsu Electric Power Co., Ltd. Marketing Center, Nanjing, CN;
Qifeng Huang, Nanjing, CN;
Xiaoquan Lu, Nanjing, CN;
Shihai Yang, Nanjing, CN;
Mingming Chen, Nanjing, CN;
Zhixin Li, Nanjing, CN;
Bo Li, Nanjing, CN;
Huiling Su, Nanjing, CN;
Xiaodong Cao, Nanjing, CN;
Yuqin Chen, Nanjing, CN;
Hanmiao Cheng, Nanjing, CN;
Tianchang Liu, Nanjing, CN;
Yixuan Huang, Nanjing, CN;
Kaijie Fang, Nanjing, CN;
STATE GRID JIANGSU ELECTRIC POWER CO., LTD., Nanjing, CN;
STATE GRID JIANGSU ELECTRIC POWER CO., LTD. MARKETING CENTER, Nanjing, CN;
Abstract
Provided is a live measurement method for three-winding transformer loss based on windowed frequency shift. The method includes: stepproviding an improved live calculation equation of a three-winding transformer loss; stepprocessing a collected x(t) signal by windowed frequency shift calculation; stepsolving an amplitude and a phase of the collected x(t) signal via discrete Fourier transform of a frequency shift signal; and stepcalculating a no-load loss and a load loss of a three-winding transformer.