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. 02, 2026
Filed:
Dec. 18, 2023
Chongqing University, Chongqing, CN;
State Grid Chongqing Electric Power Research Institute, Chongqing, CN;
Shandong Taikai Transformer Co., Ltd, Tai'an, CN;
Optosky (Xiamen) Optical Ltd, Xiamen, CN;
Fu Wan, Chongqing, CN;
Weigen Chen, Chongqing, CN;
Zhiyi Luo, Chongqing, CN;
Yingkai Long, Chongqing, CN;
Pinyi Wang, Chongqing, CN;
Lin Du, Chongqing, CN;
Qiuxia Sun, Tai'an, CN;
Quan Zhou, Chongqing, CN;
Youyuan Wang, Chongqing, CN;
Hongfei Liu, Xiamen, CN;
Chongqing University, Chongqing, CN;
State Grid Chongqing Electric power Research Institute, Chongqing, CN;
Shandong Taikai Transformer Co., Ltd., Tai'an, CN;
Optosky (Xiamen) Optical Ltd., Xiamen, CN;
Abstract
There is provided a simultaneous detection method and system for dissolved gas and partial discharge in insulating oil, and belongs to the field of electrical devices. The method includes the steps: freely diffusing the dissolved gas in the insulating oil to an Fabry-Perot (F-P) optical fiber interference cavity through an oil-gas separation membrane; coupling pump light and probe light into the F-P optical fiber interference cavity through a frequency division multiplexer; making, by an optoacoustic effect of the dissolved gas stimulated by the pump light and an ultrasonic wave generated by the partial discharge, the oil-gas separation membrane vibrate; detecting, by the probe light, vibration of the oil-gas separation membrane, which changes a cavity length, wherein when the probe light is reflected by the oil-gas separation membrane, an interference signal is generated due to the change of the cavity length.