Novel high-accuracy current transformer suitable for GIS

A current transformer, high-precision technology, applied in the direction of inductors, voltage/current isolation, circuits, etc., can solve the problems of anti-interference temperature drift of electronic devices and optical devices, and achieve the effect of improving accuracy

Inactive Publication Date: 2019-08-27
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current measurement device based on the Faraday magneto-optical effect has exposed many problems in practical engineering applications, such as anti-interference problems, temperature drift problems, precision problems, etc. of electronic and optical devices.

Method used

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  • Novel high-accuracy current transformer suitable for GIS
  • Novel high-accuracy current transformer suitable for GIS
  • Novel high-accuracy current transformer suitable for GIS

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Embodiment Construction

[0035] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the implementation manners of the present invention, and are not intended to limit the implementation manners of the present invention.

[0036] In the embodiments of the present application, unless otherwise stated, the used orientation words such as "up, down, top, bottom" are generally for the directions shown in the drawings or for vertical, vertical or The term used to describe the mutual positional relationship of each component in terms of the direction of gravity.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second" and so on are only for descriptive purposes, and should not...

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Abstract

An embodiment of the invention provides a novel high-accuracy current transformer suitable for a GIS, belonging to the technical field of precise measurement of current. The GIS comprises at least onecurrent-carrying conductor and a protective shell, and the current transformer comprises multiple quantum sensors, and a quantum detection system, wherein the quantum sensor is used for measuring magnetic field strength around each current-carrying conductor, at least 4n quantum sensors are uniformly distributed on a virtual circle with a central axis of each current-carrying conductor as a center of a circle and preset length as radius, a magnetic shielding layer is arranged at the periphery of each virtual circle, wherein n is a positive integer, and the quantum detection system is connected with each quantum sensor, and is used for acquiring magnetic field strength around the current-carrying conductor through the quantum sensor, and calculating current of each current-carrying conductor according to the magnetic field strength.

Description

technical field [0001] The invention relates to the technical field of precise measurement of electric current, in particular to a novel high-precision current transformer suitable for GIS. Background technique [0002] GIS (Gas Insulated Switchgear, Gas Insulated Fully Enclosed Combined Electrical Appliance) is composed of circuit breakers, disconnectors, grounding switches, transformers, lightning arresters, busbars, connectors and outlet terminals, etc. These devices or components are all enclosed in metal grounding enclosures , filled with a certain pressure of SF inside 6 Insulating gas, so it is also called SF 6 Fully enclosed combined electrical appliances. [0003] With the continuous advancement of smart grid construction, traditional high-voltage electrical equipment is gradually developing in the direction of intelligence, modularization, miniaturization, multi-function and maintenance-free. The traditional electromagnetic current measurement device is difficul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R15/18H01F38/30
CPCG01R15/18H01F38/30
Inventor 王鑫胡世骏赵龙高博郑国强徐斌汪玉仇茹嘉杨海涛谢毓广丁津津计长安潘丽珠毛荀程石陈凡李圆智李远松王小明何开元
Owner STATE GRID CORP OF CHINA
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