WO2016106928A1 - 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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Publication number
WO2016106928A1
WO2016106928A1 PCT/CN2015/071715 CN2015071715W WO2016106928A1 WO 2016106928 A1 WO2016106928 A1 WO 2016106928A1 CN 2015071715 W CN2015071715 W CN 2015071715W WO 2016106928 A1 WO2016106928 A1 WO 2016106928A1
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Prior art keywords
moving
contact
permanent magnet
contactors
transition
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PCT/CN2015/071715
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English (en)
French (fr)
Inventor
刁俊起
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刁俊起
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Publication date
Application filed by 刁俊起 filed Critical 刁俊起
Priority to KR1020177021013A priority Critical patent/KR101996352B1/ko
Priority to JP2017534654A priority patent/JP6418717B2/ja
Publication of WO2016106928A1 publication Critical patent/WO2016106928A1/zh

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Classifications

    • 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
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • 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

Definitions

  • the invention relates to an on-load tap changer, in particular to a permanent magnet drive on-load tap changer.
  • the transformer changes the number of effective coil turns on the high-voltage side of the transformer by switching from one tap to the other to achieve the purpose of voltage regulation.
  • the on-load tap changer relies on a switch to switch the load current, and the fast mechanism is the power source of the switch.
  • the fast mechanism mainly uses a spring release device.
  • the reliability of the spring is poor. Once the main spring is damaged, it will cause all defects, and as the use time is extended, the spring elasticity will gradually deteriorate or the spring will break, which will cause serious consequences.
  • the present invention provides a permanent magnet driven load regulating switch that does not require a fast mechanism, a moving contact, and a fast, reliable, and long service life.
  • a permanent magnet driven on-load tap changer comprising a switch circuit comprising: a single-number tap changer circuit and a double-number tap changer circuit having the same structure, the tap changer circuit being operated by a working contact
  • the transition contact and the transition resistance between the two are formed.
  • the working contact and the transition contact are respectively facing a moving contact, and each moving contact is connected in parallel with each other, and each moving contact is connected with a moving contact forever.
  • the movable contact driving mechanism includes a moving permanent magnet that contacts or separates the movable contact from the working contact and the transition contact by changing the force of the permanent magnet of the movable contact by moving.
  • the moving permanent magnet When the moving permanent magnet and the moving contact permanent magnet have the same magnetic end of the same name, the moving permanent magnet generates a repulsive force to the moving contact permanent magnet, and the moving contact contacts the working contact/transition contact; when the moving permanent magnet and the moving contact When the permanent magnets of the permanent magnets are close to each other, the moving permanent magnets attract the permanent magnets, and the moving contacts are separated from the working contacts/transition contacts.
  • the moving permanent magnet is composed of a plurality of permanent magnets arranged side by side and the magnetic poles of the adjacent two permanent magnets are different at the same end.
  • the moving contact is connected to the magnetic pole of the same name of the permanent magnet of the moving contact, and the magnetic pole of the moving contact permanent magnet is opposite to the moving contact driving mechanism. Extremely the same name magnetic pole.
  • the invention has the advantages of simple structure, convenient use, no need of a fast mechanism, switching by direct action of the contact, fast and reliable operation, low failure rate It has a long service life and has a wide range of use values.
  • FIG. 1 is a schematic view showing contact between the movable contact D1 and the working contact K1 of the present invention
  • FIG. 2 is a schematic view showing contact between the movable contact D1 and the working contact K1, the movable contact D2 and the transition contact k1 according to the present invention
  • FIG. 3 is a schematic view showing contact between the movable contact D2 and the transition contact k1, the movable contact D3 and the transition contact k2 according to the present invention
  • FIG. 4 is a schematic view showing contact between the movable contact D3 and the transition contact k2, the movable contact D4 and the working contact K2 according to the present invention
  • Figure 5 is a schematic view showing contact between the movable contact D4 and the working contact K2 of the present invention.
  • D1-D4 are moving contacts
  • K1 and K2 are working contacts
  • k1 and k2 are transition contacts
  • R1 and R2 are transition resistances.
  • a permanent magnet driven on-load tap changer comprising a switch circuit comprising: a single-number tap changer circuit and a double-number tap changer circuit having the same structure, the tap changer circuit being operated by a working contact K1, K2, transition contacts k1, k2 and the transition resistances R1, R2 between them, the working contacts K1, K2 and the transition contacts k1, k2
  • the moving contact 1 is connected in parallel with each other, the moving contact 1 is connected to the magnetic terminal of the same name of the moving contact permanent magnet 2, and the other end of the moving contact permanent magnet 2 (the same name is the magnetic pole, this embodiment is N extreme) positively moving contact drive mechanism;
  • the movable contact driving mechanism includes a moving permanent magnet 3 that contacts or separates the movable contact 1 and the working contacts K1, K2 and the transition contacts k1, k2 by changing the force acting on the movable contact permanent magnet 2 by rotation.
  • the moving permanent magnet 3 is composed of a plurality of permanent magnets arranged side by side and the magnetic poles of the adjacent
  • FIG. 1 through Figure 5 show the process of switching from tap I to tap II:
  • the permanent magnet of the moving permanent magnet with the N pole is aligned with the moving contact D1, so that the moving contact D1 has a repulsive force to make it contact with the working contact K1, and the upper end is the S pole.
  • the magnet is aligned with the moving contacts D2, D3, D4, so that the three moving contacts have suction force to separate from the opposite transition contacts k1, k2 and the working contact K2, and realize the tapping The connection of I.
  • the moving permanent magnet is moved to the right side, as shown in FIG. 2, the permanent magnet whose upper end is N pole is simultaneously aligned with the moving contacts D1 and D2, and the moving contact D2 is also pushed up to make it transition with the transition.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Electromagnets (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

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均由工作触头、过渡触头及两者之间的过渡电阻构成，上述工作触头和过渡触头均对应有一动触头（1），各个动触头（1）相互并联，每个动触头（1）上均连接一动触头永磁体（2），动触头永磁体（2）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（2）的作用力实现动触头与工作触头及过渡触头接触或分离的移动永磁体（3）。该永磁驱动有载调压开关结构简单，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 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、动触头直接动作，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均由工作触头、过渡触头及两者之间的过渡电阻构成，所述的工作触头和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过渡触头接触或分离的移动永磁体。通过移动移动永磁体改变其对动触头永磁体产生的作用力，从而实现动触头与工作触头和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/过渡触头接触；当移动永磁体与动触头永磁体异名磁极端靠近时，移动永磁体对永磁体产生吸引力，动触头与工作触头/过渡触头分离。
为便于控制动触头发生动作，所述移动永磁体由若干并排间隔设置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、动触头D2与过渡触头 k1接触示意图；
图3为本发明动触头D2与过渡触头 k1、动触头D3与过渡触头k2接触示意图；
图4为本发明动触头D3与过渡触头k2、动触头D4与工作触头K2接触 示意图 ；
图5为本发明动触头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，k1、k2为过渡触头，R1、R2为过渡电阻。
具体实施方式
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均由工作触头 K1、K2， 过渡触头 k1、k2 及两者之间的过渡电阻 R1、R2 构成，所述的工作触头 K1、K2 和过渡触头 k1、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，本实施例为N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旋转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 及过渡触头 k1、k2 接触或分离的移动永磁体3。 所述移动永磁体3由若干并排间隔设置的永磁体构成且相邻两永磁体同一端磁极相异。
图1至图5所示为从分接头 Ⅰ 切换到分接头 Ⅱ 的过程：
如图1所示，使移动永磁体的上端为N极的永磁体对准动触头D1，因此对动触头D1有斥力，使其与工作触头K1接触，而上端为S极的永磁体对准动触头D2、D3、D4，因此，对三个动触头有吸力，使其与相对的过渡触头k1、k2及工作触头K2分离,实现与分接头 Ⅰ 的连接。 然后，将移动永磁体向右侧移动，如图2所示，使其上端为N极的永磁体同时对准动触头D1、D2，将动触头D2也向上推，使其与过渡触头k1接触，而上端为S极的永磁体只对准动触头D3、D4，继续使其与工作触头和过渡触头处于分离状态。之后继续向右移动移动永磁体，如图3所示，使上端为N极的永磁体对准动触头D2、D3，使两者与相对的过渡触头接触，而左侧的上端为S极的永磁体对准动触头D1，在吸力作用下，动触头D1与工作触头K1分离，此时，右侧的上端为S极的永磁体仍然对准动触头D4，使其与工作触头K2分离。最后，继续右移移动永磁体，作用原理同上，直到如图5所示，使得动触头D1、D2、D3与对应的工作触头或过渡触头分离，而动触头D4与工作触头K2接触，完成从分接头 Ⅰ 到分接头Ⅱ的切换。

Claims (3)

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，所述分接头切换电路均由工作触头、过渡触头及两者之间的过渡电阻构成，其特征在于：上述工作触头和过渡触头均对应有一动触头，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过渡触头接触或分离的移动永磁体。
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永磁体构成且相邻两永磁体同一端磁极相异。
3、 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：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。
PCT/CN2015/071715 2014-12-29 2015-01-28 一种永磁驱动有载调压开关 WO2016106928A1 (zh)

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JP2017534654A JP6418717B2 (ja) 2014-12-29 2015-01-28 永久磁石駆動のオンロードタップ切換器

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CN201410832957.2A CN104465140B (zh) 2014-12-29 2014-12-29 一种永磁驱动有载调压开关
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CN104465140A (zh) 2015-03-25
KR101996352B1 (ko) 2019-07-04
CN104465140B (zh) 2018-06-15
JP6418717B2 (ja) 2018-11-07
KR20170102291A (ko) 2017-09-08
JP2018502456A (ja) 2018-01-25

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