CN104517742B - 一种永磁驱动有载调压开关 - Google Patents

一种永磁驱动有载调压开关 Download PDF

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CN104517742B
CN104517742B CN201410831993.7A CN201410831993A CN104517742B CN 104517742 B CN104517742 B CN 104517742B CN 201410831993 A CN201410831993 A CN 201410831993A CN 104517742 B CN104517742 B CN 104517742B
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contact
moving contact
permanent magnet
tap
moving
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CN104517742A (zh
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张梓晴
刁俊起
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Priority to US15/540,652 priority patent/US10366815B2/en
Priority to PCT/CN2015/071723 priority patent/WO2016106931A1/zh
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0231—Magnetic circuits with PM for power or force generation
    • H01F7/0242—Magnetic drives, magnetic coupling devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/48—Contacts characterised by the manner in which co-operating contacts engage by sliding with provision for adjusting position of contact relative to its co-operating contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/56—Contact arrangements for providing make-before-break operation, e.g. for on-load tap-changing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0027—Operating mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/50—Driving mechanisms, i.e. for transmitting driving force to the contacts with indexing or locating means, e.g. indexing by ball and spring
    • H01H2003/506—Driving mechanisms, i.e. for transmitting driving force to the contacts with indexing or locating means, e.g. indexing by ball and spring making use of permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0016—Contact arrangements for tap changers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

本发明涉及一种永磁驱动有载调压开关，包括切换开关电路，所述的切换开关电路包括结构相同的单数分接头切换电路和双数分接头切换电路，所述分接头切换电路包括工作触头和由主触头及副触头组成的双触点同步过渡触头，所述的工作触头和双触点同步过渡触头均正对一动触头，各个动触头相互并联，每个动触头上均连接一动触头永磁体，动触头永磁体另一端正对动触头驱动机构；所述的动触头驱动机构移动永磁体。本发明结构简单，使用方便，无需快速机构，通过触头直接动作实现切换，运行快速、可靠，故障率低，使用寿命长，具有广泛的使用价值。

Description

一种永磁驱动有载调压开关
技术领域
本发明涉及一种有载调压开关，具体涉及一种永磁驱动有载调压开关。
背景技术
变压器通过从一个分接头切换到另一个分接头来改变变压器高压侧有效线圈匝数，实现调压目的。有载调压开关依靠切换开关来切换负荷电流，快速机构为切换开关的动力源，目前快速机构主要采用弹簧释能装置，但弹簧可靠性差，一旦主弹簧损坏将造成全部瘫痪，而随着使用时间的延长，弹簧弹性逐渐变差或弹簧断裂，都将造成严重后果。
发明内容
针对上述问题，本发明提供一种无需快速机构、触头直接动作，运行快速、可靠，使用寿命长的永磁驱动有载调压开关。
为解决上述问题，本发明采取的技术方案为：一种永磁驱动有载调压开关，包括切换开关电路，所述的切换开关电路包括结构相同的单数分接头切换电路和双数分接头切换电路，所述分接头切换电路包括工作触头和由主触头及副触头组成的双触点同步过渡触头，工作触头经触发变送器、过渡电阻连接至主触头，一分接头切换电路主触头经高压晶闸管连接至另外一分接头切换电路的副触头，所述的触发变送器为与同一分接头切换电路的副触头连接的高压晶闸管提供触发电流；所述的工作触头和双触点同步过渡触头均正对一动触头，各个动触头相互并联，每个动触头上均连接一动触头永磁体，动触头永磁体另一端正对动触头驱动机构；所述的动触头驱动机构包括通过移动改变对动触头永磁体的作用力实现动触头与工作触头及双触点同步过渡触头接触或分离的移动永磁体。通过移动永磁体改变其对永磁体产生的作用力，从而实现动触头与工作触头和双触点同步过渡触头的接触和分离。当移动永磁体与动触头永磁体同名磁极端靠近时，移动永磁体对动触头永磁体产生排斥力，动触头与工作触头/双触点同步过渡触头接触；当永磁体与永磁体异名磁极端靠近时，旋转永磁体对永磁体产生吸引力，动触头与工作触头/双触点同步过渡触头分离。
所述移动永磁体由若干并排间隔设置的的永磁体构成且相邻两永磁体同一端磁极相异。
为便于移动永磁体的设计制作同时使动触头永磁体的受力便于调节，动触头连接在动触头永磁体的同名磁极端，动触头永磁体正对动触头驱动机构的磁极端为同名磁极端。
本发明结构简单，使用方便，无需快速机构，通过触头直接动作实现切换，运行快速、可靠，故障率低，使用寿命长，具有广泛的使用价值。
附图说明
图1为本发明动触头D1与工作触头K1接触示意图；
图2为本发明动触头D1与工作触头K1接触、动触头D2双触点同步过渡触头k1、k1’接触示意图；
图3为本发明动触头D2与双触点同步过渡触头k1、k1’接触、动触头D3和双触点同步过渡触头k２、k２’接触示意图；
图4为本发明动触头D3与双触点同步过渡触头k２、k２’接触，动触头D4与工作触头K2接触示意图；
图5为本发明所示动触头D4与工作触头K2接触示意图；
其中，1、动触头，2、动触头永磁体，3、移动永磁体
D1-D4为动触头，K1、K2为工作触头，R1、R2为过渡电阻，k1、k1’和k2、k2’为同步双触点过渡触头，其中k1、k2为主触头；k1’、k2’为副触头，TSCB1、TSCB2为触发变送器，TSC1、TSC2为高压晶闸管。
具体实施方式
实施例一
一种永磁驱动有载调压开关，如图1至图5所示，一种永磁驱动有载调压开关，包括切换开关电路，所述的切换开关电路包括结构相同的单数分接头切换电路和双数分接头切换电路，所述分接头切换电路包括工作触头K1/K2和由主触头k1/k2及副触头k1’/k2’组成的双触点同步过渡触头k1、k1’/k2、k2’，工作触头K1/K2经触发变送器TSCB1/TSCB2、过渡电阻R1/R2连接至主触头k1/k2，单数分接头切换电路主触头k1经高压晶闸管TSC2连接至双数分接头切换电路的副触头k2’；双数分接头切换电路主触头k2经高压晶闸管TSC1连接至单数分接头切换电路的副触头k1。所述的触发变送器TSCB1为高压晶闸管TSC1提供触发电流；所述的触发变送器TSCB2为高压晶闸管TSC2提供触发电流。所述的工作触头K1/K2和双触点同步过渡触头k1、k1’/k2、k2’均正对一动触头1，各个动触头1相互并联，动触头1连接在动触头永磁体2的同名磁极端，动触头永磁体2另一端（同名磁极端）正对动触头驱动机构；所述的动触头驱动机构包括通过移动改变对动触头永磁体2的作用力实现动触头1与工作触头K1/K2及双触点同步过渡触头k1、k1’/k2、k2’接触或分离的移动永磁体3。所述移动永磁体3由若干并排的永磁体构成且相邻两永磁体同一端磁极相异。
如图1至图5所示，动触头1从工作触头K1切换到工作触头K2的过程如下：
图1所示，动触头D1与工作触头K1接触，触发变送器TSCB1、触发变送器TSCB２无电流；
图2所示，动触头D1与工作触头K1接触、动触头D2与双触点同步过渡触头k1、k1’接触，触发变送器TSCB1、触发变送器TSCB２无电流；
图3所示，动触头D2与双触点同步过渡触头k1、k1’接触，动触头D3与双触点同步过渡触头k２、k２’接触，触发变送器TSCB1、触发变送器TSCB２有电流，最易产生电弧；
图4所示，动触头D4与工作触头K2接触、动触头D3与双触点同步过渡触头k２、k２’接触，触发变送器TSCB1、触发变送器TSCB２无电流；
图5所示，动触头D4与工作触头K2接触，触发变送器TSCB1、触发变送器TSCB２无电流。
出现下列故障时，不及时检修也能保证正常工作：
（１）高压晶闸管TSC1开路时，工作触头Ｋ１、工作触头Ｋ２起弧灭弧；
（２）高压晶闸管TSC2开路时，工作触头Ｋ１、工作触头Ｋ２起弧灭弧；
（３）高压晶闸管TSC１短路导通时，同步双触点过渡触头
k1、k1’起弧灭弧；
（４）高压晶闸管TSC2短路导通时，同步双触点过渡触头
K２、k２’起弧灭弧。

Claims (2)

1.一种永磁驱动有载调压开关，包括切换开关电路，所述的切换开关电路包括结构相同的单数分接头切换电路和双数分接头切换电路，所述单数分接头切换电路和双数分接头切换电路包括工作触头和由主触头及副触头组成的双触点同步过渡触头，工作触头经触发变送器、过渡电阻连接至主触头，一分接头切换电路主触头经高压晶闸管连接至另外一分接头切换电路的副触头，所述的触发变送器为与同一分接头切换电路的副触头连接的高压晶闸管提供触发电流；其特征在于：所述的工作触头和双触点同步过渡触头均正对一动触头，各个动触头相互并联，每个动触头上均连接一动触头永磁体，动触头永磁体另一端正对动触头驱动机构；所述的动触头驱动机构包括通过移动改变对动触头永磁体的作用力实现动触头与工作触头及双触点同步过渡触头接触或分离的移动永磁体；动触头连接在动触头永磁体的同名磁极端，动触头永磁体正对动触头驱动机构的磁极端为同名磁极端。
2.根据权利要求1所述的永磁驱动有载调压开关，其特征在于：所述移动永磁体由若干并排间隔设置的的永磁体构成且相邻两永磁体同一端磁极相异。
CN201410831993.7A 2014-12-29 2014-12-29 一种永磁驱动有载调压开关 Active CN104517742B (zh)

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CA2972336A CA2972336A1 (en) 2014-12-29 2015-01-28 Permanent magnet drive on-load tap-changing switch
US15/540,652 US10366815B2 (en) 2014-12-29 2015-01-28 Permanent magnet drive on-load tap-changing switch
PCT/CN2015/071723 WO2016106931A1 (zh) 2014-12-29 2015-01-28 一种永磁驱动有载调压开关

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CN105261467A (zh) * 2015-11-10 2016-01-20 刁俊起 一种新型变压器有载调压开关
CN108155033A (zh) * 2018-01-18 2018-06-12 刁俊起 一种电永磁有载调压开关
DE102021104923A1 (de) 2021-03-02 2022-09-08 Maschinenfabrik Reinhausen Gmbh Schaltmittel und Laststufenschalter mit einem Schaltmittel
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