Optical measurement system and method for voltage of direct-current transmission line

• Main Authors: ZOU HONGSEN, FAN XING, YU XIAOJUN, CUI PENG, QIU LIHUI, AN YANJIE, YANG CHEN, LIU ZHIYUAN, WU MINGKAI, ZHAO YI, LU HONGJIAN, SHAO YONGHAO, WEN TAO, ZHAO XINYANG, CHEN HAOYANG
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2024
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses an optical measurement system and method for the voltage of a direct current power transmission line, and the system comprises a first measurement device and an upper computer, the first measurement device comprises a laser, an electro-optical crystal sensing probe, a photoelectric detector and a signal conditioning circuit, and the electro-optical crystal sensing probe is disposed in an electric field caused by the power transmission line on the ground; the laser is used for emitting single-frequency laser; the electro-optical crystal sensing probe is used for sending a signal of the single-frequency laser to the photoelectric detector and the signal conditioning circuit; the photoelectric detector and the signal conditioning circuit are used for outputting reference voltage of the power transmission line according to the signal of the single-frequency laser; the upper computer is used for calculating the actual field intensity of an electric field caused by the power transmission lin