BGO (Bismuth Germanium Oxide) crystal electro-optic coefficient temperature relevancy self-compensation device and method

A technology of BGO crystal and temperature correlation, applied in the direction of temperature compensation modification, measuring device, measuring electric variable, etc., can solve the problems of increasing system software and hardware costs, etc.

Active Publication Date: 2014-10-29
STATE GRID CORP OF CHINA +1
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  • Abstract
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Problems solved by technology

The disadvantage of this method is that it is necessary to add a temperature sensor to the system, and for the special high-voltage measurement environment of the power system, it is also necessary to solve its insulation problem; at the same time

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  • BGO (Bismuth Germanium Oxide) crystal electro-optic coefficient temperature relevancy self-compensation device and method
  • BGO (Bismuth Germanium Oxide) crystal electro-optic coefficient temperature relevancy self-compensation device and method
  • BGO (Bismuth Germanium Oxide) crystal electro-optic coefficient temperature relevancy self-compensation device and method

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Embodiment Construction

[0050] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0051] Such as figure 1 , the present invention provides a self-compensation device for the temperature dependence of the electro-optic coefficient of a BGO crystal, the self-compensation device includes a Faraday collimator, a quartz tube, an anti-reflection coating, a reflective film, a BGO crystal, and a base; the Faraday collimation rotator The rotator includes a collimator lens and a Faraday rotator. The collimator lens and the Faraday rotator are packaged inside the quartz tube. The two ends of the BGO crystal are coated with an anti-reflection film and a reflective film respectively. Both the quartz tube and the BGO crystal are installed on the base. The base is made of the same material as the BGO crystal.

[0052] The polarization-maintaining pigtail 1 is a panda-type polarization-maintaining fiber, and the cladding diameter is 80 μm or 125 μm; the ...

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Abstract

The invention provides a BGO (Bismuth Germanium Oxide) crystal electro-optic coefficient temperature relevancy self-compensation device and method. The BGO crystal electro-optic coefficient temperature relevancy self-compensation device comprises a faraday collimation optical rotation device, a quartz tube, an antireflection film, a reflective film, a BGO crystal and a base; the faraday collimation optical rotation device comprises a collimating lens and a faraday optical rotation device; the collimating lens and the faraday optical rotation device are packaged inside the quartz tube; an antireflection film and a reflective film plate two ends of the BGO crystal; the quartz tube and the BGO crystal are installed on the base. According to the BGO crystal electro-optic coefficient temperature relevancy self-compensation device and method, faraday optical rotation device optical rotation angle temperature characteristics and influences thereof to an optical voltage transformer transformation ratio are utilized to automatically compensate BGO crystal electro-optic coefficient measuring error caused by temperature variation on line.

Description

technical field [0001] The invention relates to a device and a method, in particular to a self-compensating device and method for the temperature dependence of the electro-optical coefficient of a BGO crystal. Background technique [0002] Voltage transformer is one of the most important primary equipment in power system, its measurement accuracy and reliability are closely related to the safe, reliable and economical operation of power system. The main functions of the voltage transformer include: converting the high voltage of the primary line into a low-voltage standard electrical signal, providing voltage information for the secondary measurement and protection device; realizing electrical isolation between the primary equipment and the secondary equipment, ensuring that the staff and the secondary equipment secondary device security. At present, the voltage transformers widely used in power systems are electromagnetic and capacitive voltage divider voltage transformers...

Claims

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Application Information

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IPC IPC(8): G01R1/44G01R15/24G01R19/00
CPCG01R1/44G01R15/24G01R19/00
Inventor 李传生张朝阳孙海江温海燕
Owner STATE GRID CORP OF CHINA
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