公开(公告)号：US20240125821A1

公开(公告)日：2024-04-18

申请号：US18544543

申请日：2023-12-19

Applicant: HARBIN INSTITUTE OF TECHNOLOGY

Inventor： Guoqing ZHANG ,  Wenbin YU ,  Caiyun MO ,  Yuxin ZHANG ,  Jie ZUO

IPC: G01R15/22 ,  G01R19/10

CPC classification number: G01R15/22 ,  G01R19/10

Abstract: A schematic diagram of a wideband measurement system for mixed-connected CVT based on an optical voltage sensor is provided. The wideband measurement system comprises a CVT power frequency measurement section and an optical wideband measurement section. In the optical wideband measurement section, a low-voltage capacitor is connected in series between the low-voltage terminal and the ground terminal of the medium-voltage capacitor in the capacitor voltage divider. An optical voltage sensor is connected in parallel across the terminals of the low-voltage capacitor to measure the wideband voltage signal under test. The wideband measurement system for mixed-connected CVT described in the invention enables the CVT to have wideband measurement capabilities while ensuring the accuracy of conventional CVT power frequency measurements.