CN111771250A - 电流互感器 - Google Patents

电流互感器 Download PDF

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Publication number
CN111771250A
CN111771250A CN201880076113.6A CN201880076113A CN111771250A CN 111771250 A CN111771250 A CN 111771250A CN 201880076113 A CN201880076113 A CN 201880076113A CN 111771250 A CN111771250 A CN 111771250A
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China
Prior art keywords
core structure
magnetic core
magnetic
primary winding
current
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CN201880076113.6A
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CN111771250B (zh
Inventor
石磊
薛明雨
叶飞
张俊
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • G01R15/183—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using transformers with a magnetic core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2895—Windings disposed upon ring cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions
    • H01F2038/305—Constructions with toroidal magnetic core

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

一种电流互感器(10)，包括磁芯(11)、第一原边绕组(12)、第二原边绕组(13)以及第一副边绕组(14)，其中：该磁芯(11)包括第一磁芯结构(111)、第二磁芯结构(112)以及第三磁芯结构(113)，其中该第一磁芯结构(111)与第二磁芯结构(112)连接形成第一闭合磁路(201)，该第一磁芯结构(111)与第三磁芯结构(113)连接形成第二闭合磁路(202)，该第一磁芯结构(111)为该第一闭合磁路(201)与该第二闭合磁路(202)的公共磁芯结构：该第一闭合磁路(201)穿过该第一原边绕组(12)，该第二闭合磁路(202)穿过该第二原边绕组(13)；该第一副边绕组(14)绕制在该第一磁芯结构(111)上。流经第一原边绕组(12)和第二原边绕组(13)的差模电流产生的磁通在第一磁芯结构(111)上相互叠加，流经第一原边绕组(12)和第二原边绕组(13)的共模电流产生的磁通在第一磁芯结构(111)上相互抵消。

Description

PCT国内申请，说明书已公开。

Claims (12)

  1. PCT国内申请，权利要求书已公开。
CN201880076113.6A 2017-11-25 2018-11-15 电流互感器 Active CN111771250B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201711196326.6A CN108039267B (zh) 2017-11-25 2017-11-25 电流互感器
CN2017111963266 2017-11-25
PCT/CN2018/115588 WO2019100996A1 (zh) 2017-11-25 2018-11-15 电流互感器

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CN111771250A true CN111771250A (zh) 2020-10-13
CN111771250B CN111771250B (zh) 2022-08-26

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CN201880076113.6A Active CN111771250B (zh) 2017-11-25 2018-11-15 电流互感器

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US (1) US11742139B2 (zh)
EP (2) EP4016565A1 (zh)
CN (2) CN108039267B (zh)
WO (1) WO2019100996A1 (zh)

Cited By (1)

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CN114019218A (zh) * 2021-11-04 2022-02-08 国网河北省电力有限公司电力科学研究院 一种双通道零磁通电流传感器

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* Cited by examiner, † Cited by third party
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CN108039267B (zh) * 2017-11-25 2019-10-25 华为数字技术（苏州）有限公司 电流互感器
CN111245209B (zh) * 2020-01-19 2021-08-24 珠海格力电器股份有限公司 一种干扰信号抑制电路及电器设备
EP4152350A4 (en) * 2020-06-10 2023-07-26 Huawei Digital Power Technologies Co., Ltd. INDUCTOR AND ASSOCIATED APPARATUS
CN115149900A (zh) * 2022-06-27 2022-10-04 华为数字技术（苏州）有限公司 光伏变换器以及光伏发电系统

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CN101552116A (zh) * 2008-12-26 2009-10-07 魏明 分磁路变压器
CN201444443U (zh) * 2009-01-16 2010-04-28 魏明 部分控制变压器
CN102394168A (zh) * 2011-03-09 2012-03-28 北京四方继保自动化股份有限公司 末屏差分数字输出互感器
CN102709042A (zh) * 2012-06-21 2012-10-03 陈德才 一种电流互感器
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114019218A (zh) * 2021-11-04 2022-02-08 国网河北省电力有限公司电力科学研究院 一种双通道零磁通电流传感器
CN114019218B (zh) * 2021-11-04 2024-04-09 国网河北省电力有限公司电力科学研究院 一种双通道零磁通电流传感器

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Publication number Publication date
WO2019100996A1 (zh) 2019-05-31
EP3709320B1 (en) 2022-01-05
EP3709320A1 (en) 2020-09-16
CN111771250B (zh) 2022-08-26
US20200286681A1 (en) 2020-09-10
CN108039267A (zh) 2018-05-15
US11742139B2 (en) 2023-08-29
EP4016565A1 (en) 2022-06-22
CN108039267B (zh) 2019-10-25
EP3709320A4 (en) 2020-09-16

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