Title:
SELF-COMPENSATION DEVICE AND METHOD FOR A BGO CRYSTAL ELECTRO-OPTIC COEFFICIENT TEMPERATURE CORRELATION
Document Type and Number:
WIPO Patent Application WO/2016/008406
Kind Code:
A1
Abstract:
A self-compensation device and method for a BGO crystal electro-optic coefficient temperature correlation. The device comprises a Faraday collimation rotator, a quartz tube (4), an antireflection film (7), a reflecting film (8), a BGO crystal (5) and a base (6). The Faraday collimation rotator comprises a collimation lens (2) and a Faraday rotator (3), wherein the collimation lens (2) and the Faraday rotator (3) are encapsulated inside the quartz tube (4), the two ends of the BGO crystal (5) are plated with the antireflection film (7) and the reflecting film (8) respectively, and both the quartz tube (4) and the BGO crystal (5) are mounted on the base (6). The self-compensation device and method for a BGO crystal electro-optic coefficient temperature correlation automatically compensate measurement errors due to the fact that the electro-optic coefficient of the BGO crystal changes with the temperature on line using the temperature characteristic of the rotation angle of the Faraday rotator and the influence thereof on the transformation ratio of an optical voltage transformer.
Inventors:
LI CHUANSHENG (CN)
CHEN SHUO (CN)
ZHANG CHAOYANG (CN)
LIU ZHANYUAN (CN)
SUN HAIJIANG (CN)
HOU JIBIAO (CN)
WEN HAIYAN (CN)
CHEN SHUO (CN)
ZHANG CHAOYANG (CN)
LIU ZHANYUAN (CN)
SUN HAIJIANG (CN)
HOU JIBIAO (CN)
WEN HAIYAN (CN)
Application Number:
PCT/CN2015/084034
Publication Date:
January 21, 2016
Filing Date:
July 15, 2015
Export Citation:
Assignee:
STATE GRID CORP CHINA (CN)
STATE GRID SMART GRID RES INST (CN)
STATE GRID SMART GRID RES INST (CN)
International Classes:
G01R1/44; G01R15/24; G01R19/00
Foreign References:
| CN101424708A | 2009-05-06 | |||
| CN104122423A | 2014-10-29 | |||
| CN100340860C | 2007-10-03 | |||
| US6285182B1 | 2001-09-04 | |||
| JPS58140716A | 1983-08-20 |
Other References:
LI, XIA ET AL.: "An Optical Voltage Sensor with Reciprocal Light Path", JOURNAL OF ELECTRONIC MEASUREMENT AND INSTRUMENT, vol. 22, no. z1, 31 December 2008 (2008-12-31), pages 294
LI, KAICHENG ET AL.: "From an Potential Transformer to an Optical Potential Transformer", TRANSFORMER, 31 December 1995 (1995-12-31)
LI, KAICHENG ET AL.: "From an Potential Transformer to an Optical Potential Transformer", TRANSFORMER, 31 December 1995 (1995-12-31)
Attorney, Agent or Firm:
AMBOYNA INTELLECTUAL PROPERTY AGENT CO.,LTD. (CN)
北京安博达知识产权代理有限公司 (CN)
北京安博达知识产权代理有限公司 (CN)
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