A kind of manufacturing method of quarter wave plate for temperature compensation

A technology of temperature compensation and production method, which is applied in the field of production of quarter-wave plates for temperature compensation, can solve problems such as poor temperature stability and increase processes, so as to improve performance and yield, and achieve stability and consistency sexual effect

CN111175968BActive Publication Date: 2021-10-19BEIJING AUTOMATION CONTROL EQUIP INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-10-19

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Abstract

The invention discloses a manufacturing method of a quarter wave plate used for temperature compensation of an optical fiber current transformer, which can realize the stable and consistent current ratio difference of the optical fiber current transformer in the whole temperature range in the mass production process, Reduce the defect rate of products and ensure the long-term working accuracy and stability of the fiber optic current transformer. The method includes the following steps: (1) establishing a mathematical model of the optical fiber current transformer; (2) measuring the phase delay of the elliptical core optical fiber; (3) manufacturing a quarter-wave plate. The advantages of the present invention are that the manufacturing process scheme of the quarter-wave plate is stable and consistent, and the stability and consistency of the current ratio difference of the optical fiber current transformer system in the full temperature range can be realized, thereby improving the optical fiber current mutual inductance. performance and yield of the system.
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Description

technical field

[0001] The invention belongs to a method for manufacturing components in an optical fiber current transformer, in particular to a method for manufacturing a quarter-wave plate used for temperature compensation of an optical fiber current transformer. Background technique

[0002] Fiber optic current transformer is a kind of current measuring equipment based on Faraday effect, which has the advantages of good insulation, high reliability and strong anti-electromagnetic interference ability. Compared with traditional electromagnetic current transformer, the measurement range of fiber optic current transformer is Large and wide response frequency, it has obvious advantages in the measurement of DC current, the grid connection of intermittent power supply and the application of UHV AC transmission. Current transformers have irreplaceable status and broad market prospects in the new generation of intelligent substations.

[0003] At present, the system structure ...

Examples

Embodiment Construction

[0049] The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:

[0050] The present invention proposes a method for making a quarter-wave plate for temperature compensation of an optical fiber current transformer, comprising:

[0051] According to the mathematical model of the optical fiber current transformer system, the key parameters in the production process of the quarter wave plate are optimized by utilizing the complementary characteristics of the temperature performance of the elliptical core fiber used in the quarter wave plate and the Spun fiber used in the sensitive ring Design, and provide process scheme design for the parameters of the optimized design, to realize the temperature compensation of the quarter-wave plate to the optical fiber current transformer system.

[0052] The key parameter optimization design in the production process of the quarter wave plate specifically includes:

[0053] Accordin...