Active optics current transformer and its method

A technology of current transformer and active optics, which is applied in the direction of inductors, instruments, circuits, etc., can solve the problems that the transformer cannot meet the requirements of long-term stable operation, the transformer cannot run continuously and stably for a long time, and the measurement accuracy of the transformer is not high. , to achieve the effect of reducing the cost of optical transmission, simple structure and strong anti-interference ability
CN1929054AInactive Publication Date: 2007-03-14北京许继电力光学技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
北京许继电力光学技术有限公司
Publication Date
2007-03-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention discloses one source chemical current inductor, which comprises high voltage side signal process circuit 4, high voltage current source 9, high voltage current power 15 and coupler capacitor with non-metal cable 20 and low side signal process circuit 25, wherein, the circuit 4 adopts main and assistant power; the capacitor supply forms main power 9 and laser supply forms assistant power 15 at cooling status under control of side micro process system 24 output level.
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Description

technical field

[0001] The invention relates to the technical field of current transformers, in particular to an active optical current transformer and a method thereof for measuring high voltage and large current in a power system. Background technique

[0002] With the continuous increase of power transmission capacity and the continuous improvement of voltage level, the defects of traditional electromagnetic current transformers such as difficult insulation, complex structure, bulky size, and difficulty in meeting the requirements of power system digitization have become more and more obvious. With the development of modern optical fiber technology and electronic technology, optical current transformers have attracted more and more attention from researchers all over the world, making them an ideal substitute for traditional electromagnetic current transformers. According to whether the current sensing head on the high-voltage side needs a working power supply, the curren...

Claims

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