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:
Oct. 29, 2024
Filed:
Apr. 24, 2022
State Grid Jiangsu Electric Power Co., Ltd. Marketing Service Center, Jiangsu, CN;
National Institute of Metrology, China, Beijing, CN;
Qing Xu, Jiangsu, CN;
Zhaomin Shi, Beijing, CN;
Xianlin Pan, Beijing, CN;
Ying Song, Beijing, CN;
Tiandi Zhou, Beijing, CN;
Meimei Duan, Jiangsu, CN;
Zhengqi Tian, Jiangsu, CN;
Shuangshuang Zhao, Jiangsu, CN;
State Grid Jiangsu Electric Power Co., Ltd. Marketing Service Center, Nanjing, CN;
National Institute of Metrology, China, Beijing, CN;
Abstract
The present disclosure provides a system and method for verifying alternating current (AC)/direct current (DC) conversion of an ultralow-frequency voltage. The system includes a quantum voltage generation system, a low-frequency signal source, a follower, three switches, a double-heater-strip thermoelectric converter, a nanovoltmeter, a clock source, a high-precision digital sampling system, and an upper computer. Based on DC and AC quantum voltage technologies and with reference to the double-heater-strip thermoelectric converter, an ultralow-frequency voltage is traced to a DC quantum voltage through AC/DC conversion, and a conversion result is compared with an AC quantum voltage to verify rationality of precision and an uncertainty evaluation result of AC/DC conversion of the ultralow-frequency voltage, so as to ensure reliability of AC/DC conversion of the ultralow-frequency voltage. This resolves a problem that the AC/DC conversion result of the ultralow-frequency voltage cannot be verified.