WO2016106916A1 - 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
WO2016106916A1
WO2016106916A1 PCT/CN2015/071676 CN2015071676W WO2016106916A1 WO 2016106916 A1 WO2016106916 A1 WO 2016106916A1 CN 2015071676 W CN2015071676 W CN 2015071676W WO 2016106916 A1 WO2016106916 A1 WO 2016106916A1
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Prior art keywords
permanent magnet
magnet
contact
moving
tap changer
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PCT/CN2015/071676
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English (en)
French (fr)
Inventor
刁俊起
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刁俊起
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Application filed by 刁俊起 filed Critical 刁俊起
Priority to MYPI2017702378A priority Critical patent/MY192702A/en
Publication of WO2016106916A1 publication Critical patent/WO2016106916A1/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
    • 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 the switch to switch the load current.
  • the fast mechanism is the power source of the switch. At present, the fast mechanism mainly uses the spring release device, but the spring reliability is poor. Once the main spring is damaged, it will cause all defects, and with the use of Prolonged time, the spring elasticity is gradually deteriorated or the spring is broken, which will have serious consequences.
  • the invention provides a permanent magnet driven on-load tap changer which uses a permanent magnet drive as a fast mechanism, which is fast, reliable and has a long service life.
  • a permanent magnet driven on-load tap change switch comprising a switch circuit and a fast mechanism, wherein the switch switch circuit comprises a single-number tap changer circuit and a double-number tap changer circuit having the same structure,
  • the tap changing circuit is composed of a working contact, a transition contact and a transition resistance between the two
  • the quick mechanism includes a stroke mechanism for carrying the moving contact, a moving magnet group connected to the stroke mechanism, and a pair of motion
  • the magnet group generates a gravitational/repellent fixed magnet group
  • the moving magnet group includes a first permanent magnet and a second permanent magnet connected together by a magnetic pole of the same name, and the first permanent magnet and the second permanent magnet have the same name magnetic pole Positively facing the fixed magnet group
  • the set of magnets includes a rotating permanent magnet that contacts or separates the movable contact from the working contact and the transition contact by changing the force on the moving magnet group by rotation.
  • the two sides of the rotating permanent magnet are respectively a first magnet and a second magnet
  • the leading end of the first and second magnets respectively face the first permanent magnet and the second permanent magnet.
  • the arrangement of the first magnet and the second magnet facilitates the concentration of the magnetic force and better controls the movement of the moving magnet group.
  • the first permanent magnet and the second permanent magnet are opposite to each other at the end of the fixed magnet group, and the first permanent magnet and the second permanent magnet are respectively subjected to attractive force and repulsive force, and the two directions are the same, and the moving magnet group
  • the force is the combined force of the two, which drives the stroke mechanism to move.
  • the first permanent magnet and the second permanent magnet are located between the first magnet and the second magnet and four Flush.
  • a permanent magnet driven on-load tap changer comprising a switch circuit and a quick mechanism, the switch switch circuit comprising a single-number tap changer circuit and a double-number tap changer circuit having the same structure, wherein the tap changeover circuit is The working contact, the transition contact, and a transition resistance between the two, the quick mechanism includes a stroke mechanism for carrying the movable contact, a moving magnet group connected to the stroke mechanism, and generating a gravity/repulsive force to the moving magnet group
  • the movable magnet group includes a rotating permanent magnet, a first magnet and a second magnet respectively disposed on two sides of the rotating permanent magnet, and the first and second magnets are away from the end face of the rotating permanent magnet
  • Each of the fixed magnet sets includes a first permanent magnet and a second permanent magnet facing the first and second magnets, respectively, and the ends of the two permanent magnets adjacent to the magnet are magnetic terminals of the same name.
  • One end of the two permanent magnets near the magnetizer is a magnetic pole of the same name, and the rotating permanent magnet is controlled so that the magnets on both sides are respectively attracted to the attractive force and the repulsive force, and the directions of the two are the same, and the force of the moving magnet group is the resultant force of the two, thereby driving the stroke.
  • the movement of the mechanism enables the movable contact to contact or separate from the working contact and the transition contact, thereby realizing switching between switching single and double digital taps.
  • the first magnetizer and the second magnetizer are located between the first permanent magnet and the second permanent magnet and are flush with each other.
  • the utility model has the advantages of simple structure and high reliability, and the permanent magnet is used as the fast mechanism to drive the movable contact and the working contact and the transition contact to complete the switching according to the same-pole repulsion, and the service life of the on-load tap changer is extended. Use value.
  • FIG. 1 is a schematic structural view of a quick mechanism of Embodiment 1;
  • FIG. 2 is a schematic structural view of a quick mechanism of Embodiment 2;
  • FIG. 3 is a schematic view showing the contact between the movable contact and the working contact K1 of Embodiment 1;
  • FIG. 4 is a schematic view showing the contact between the movable contact of the embodiment 1 and the working contact K1 and the transition contact k1;
  • Figure 5 is a schematic view showing the contact between the movable contact and the transition contact k1 of the embodiment 1;
  • Figure 6 is a schematic view showing the contact between the movable contact and the transition contacts k1, k2 of the embodiment 1;
  • Figure 7 is a schematic view showing the contact between the movable contact and the transition contact k2 of the embodiment 1;
  • FIG. 8 is a schematic view showing the contact between the movable contact of the embodiment 1 and the contact K2 and the transition contact k2;
  • Figure 9 is a schematic view showing the contact between the movable contact and the working contact K2 of the embodiment 1;
  • a permanent magnet driven on-load tap changer comprising a switch circuit and a quick mechanism, the switch switch circuit comprising a single-number tap changer circuit and a double-number tap changer circuit having the same structure, wherein the tap changeover circuit is
  • the working contacts K1, K2, the transition contacts k1, k2, and the transition resistors R1, R2 between the two are formed. As shown in FIG.
  • the quick mechanism includes a bearing for carrying a moving contact 7 Stroke mechanism 2, a moving magnet group connected to the stroke mechanism 2, and a fixed magnet group that generates a gravitational/repulsive force to the moving magnet group;
  • the moving magnet group includes a first permanent magnet 1 and a second connected together with a magnetic pole of the same name
  • the permanent magnet 3, the exposed magnetic poles of the same name exposed by the first permanent magnet 1 and the second permanent magnet 3 are all facing the fixed magnet group;
  • the fixed magnet group includes the first permanent magnet 1 and the second permanent magnet 3 changed by rotation. Force to achieve moving contact 7 A rotating permanent magnet 5 that is in contact with or separated from the working contacts K1, K2 and the transition contacts k1, k2.
  • the structural form of the stroke mechanism 2 is not limited, and the movable contact 7 can be brought into contact with or separated from the working contacts K1, K2 and the transition contacts k1, k2. Just fine.
  • First magnet 4 The magnet magnetized to the corresponding magnetic body, with the rotation of the rotating permanent magnet 5, the attraction force and the repulsive force are changed to the first permanent magnet 1 and the second permanent magnet 3, thereby controlling the movement of the moving magnet group, and the moving magnet group drives the upper portion.
  • the stroke mechanism 2 is actuated, and the moving contact on the arc side of the stroke mechanism 2 7 Switching between the working contacts K1, K2 and the transition contacts k1, k2.
  • the movable contact 7 is in contact with the working contact K1;
  • the movable contact 7 is in contact with the working contact K1 and the transition contact k1;
  • the movable contact 7 is in contact with the transition contact k1;
  • the movable contact 7 is in contact with the transition contacts k1, k2;
  • the movable contact 7 is in contact with the transition contact k2;
  • the movable contact 7 is in contact with the contact K2 and the transition contact k2;
  • the movable contact 7 is in contact with the working contact K2.
  • a permanent magnet driven on-load tap changer comprising a switch circuit and a quick mechanism, the switch switch circuit comprising a single-number tap changer circuit and a double-number tap changer circuit having the same structure, wherein the tap changeover circuit is The working contacts K1, K2, the transition contacts k1, k2 and the transition resistors R1, R2 between the two, the fast mechanism comprises a movable contact 7 Stroke mechanism 2, a moving magnet group connected to the stroke mechanism 2, and a fixed magnet group that generates a gravitational/repulsive force to the moving magnet group; the moving magnet group includes rotating permanent magnets 5, respectively disposed on both sides of the rotating permanent magnet 5 First magnet 4 and second magnet 6.
  • the first and second magnets 4 and 6 are remote from the end face of the rotating permanent magnet 5 and face the fixed magnet group; the fixed magnet group includes the first and second magnets 4, 6 respectively.
  • the first permanent magnet 1, the second permanent magnet 3, and the ends of the two permanent magnets close to the magnetizer are magnetic terminals of the same name.
  • the first magnet 4 and the second magnet 6 It is located between the first permanent magnet 1 and the second permanent magnet 3 and the four are at the same level.
  • the structural form of the stroke mechanism 2 is not limited, and the movable contact 7 can be driven. It is sufficient to contact or separate the working contacts K1, K2 and the transition contacts k1, k2.
  • the process of switching the movable contact 7 from the working contact K1 to the working contact K2 is the same as that in the first embodiment.

Abstract

一种永磁驱动有载调压开关，包括切换开关电路和快速机构，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，快速机构包括用于承载动触头（7）的行程机构（2）、与行程机构（2）连接的运动磁体组以及对运动磁体组产生引力/斥力的固定磁体组；运动磁体组包括同名磁极端连接在一起的第一永磁体（1）和第二永磁体（3），第一永磁体（1）和第二永磁体（3）外露的同名磁极端均正对固定磁体组；所述的固定磁体组包括旋转永磁体（5）。该开关结构简单，可靠性高，根据同极相斥异极相吸利用永磁体作为快速机构带动动触头与其工作触头和过渡触头完成切换，延长了有载调压开关的使用寿命，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 提供一种利用永磁驱动作为快速机构，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，包括切换开关电路和快速机构，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，所述的快速机构包括用于承载动触头的行程机构、与行程机构连接的运动磁体组以及对运动磁体组产生引力/斥力的固定磁体组；所述的运动磁体组包括同名磁极端连接在一起的第一永磁体和第二永磁体，第一永磁体和第二永磁体外露的同名磁极端均正对固定磁体组；所述的固 定磁体组包括通过旋转改变对运动磁体组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旋转永磁体。
所述的旋转永磁体 两 侧 分别 被第一导磁体和第二导磁体 的首端包覆，第一导磁体和第二导磁体的末端分别正对第一永磁体和第二永磁体 。 第一导磁体、第二导磁体的设置便于磁力集中，更好的控制运动磁体组的动作。 通过控制旋转永磁体的旋转来改变第一导磁体、第二导磁体对运动磁体组的作用力，进而推动运动磁体组带动行程机构上的动触头运动，使得动触头与工作触头和过渡触头接触或分离，实现单双数分接头间的切换。第一永磁体和第二永磁体正对固定磁体组的一端为同名磁极端，这种设计使得第一永磁体和第二永磁体分别受到吸引力和排斥力，两者方向一致，运动磁体组受力为两者的合力，从而带动行程机构运动。
为了实现旋转永磁体对运动磁体组的精确控制，所述的第一永磁体、第二永磁体位于第一导磁体及第二导磁体之间且四者 平齐。
一种永磁驱动有载调压开关，包括切换开关电路和快速机构，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，所述的快速机构包括用于承载动触头的行程机构、与行程机构连接的运动磁体组以及对运动磁体组产生引力/斥力的固定磁体组；所述的运动磁体组包括旋转永磁体、分别设置于旋转永磁体两侧的第一导磁体和第二导磁体，第一导磁体和第二导磁体远离旋转永磁体的端面均正对固定磁体组；所述的固定磁体组包括分别正对第一导磁体和第二导磁体的第一永磁体、第二永磁体，两永磁体靠近导磁体的一端为同名磁极端。两永磁体靠近导磁体的一端为同名磁极端，控制旋转永磁体使两侧的导磁体分别受到吸引力和排斥力，两者方向一致，运动磁体组受力为两者的合力，从而带动行程机构运动，使得动触头与工作触头和过渡触头接触或分离，实现切换单双数分接头间的切换。
为了实现固定磁体组对运动磁体组的精确 控制，所述的第一导磁体、第二导磁体位于第一永磁体及第二永磁体之间且四者 平齐 。
本发明 结构简单，可靠性高，根据同极相斥异极相吸利用永磁体作为快速机构带动动触头与其工作触头和过渡触头完成切换，延长了有载调压开关的使用寿命，具有广泛的使用价值。
附图说明
图1为实施例1快速机构的结构示意图；
图2为实施例2快速机构的结构示意图；
图3为 实施例1 动触头与工作触头K1接触示意图 ；
图4为 实施例1 动触头与工作触头K1、过渡触头 k1接触示意图；
图5为 实施例1 动触头与过渡触头 k1接触示意图；
图6为 实施例1 动触头与过渡触头 k1、k2接触示意图；
图7为 实施例1 动触头与过渡触头 k2 接触 示意图；
图8为 实施例1 动触头与触头K2、过渡触头 k2 接触 示意图 ；
图9为 实施例1 动触头与工作触头K2接触 示意图；
其中，1、第一永磁 体，2、行程机构，3、第二永磁体，4、第一导磁体，5、旋转永磁体， 6、 第二导磁体， 7 、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
实施例一
一种永磁驱动有载调压开关，包括切换开关电路和快速机构，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。如图1所示，所述的快速机构包括用于承载动触头 7 的行程机构2、与行程机构2连接的运动磁体组以及对运动磁体组产生引力/斥力的固定磁体组；所述的运动磁体组包括同名磁极端连接在一起的第一永磁体1和第二永磁体3，第一永磁体1和第二永磁体3外露的同名磁极端均正对固定磁体组；所述的固定磁体组包括通过旋转改变对第一永磁体1和第二永磁体3的作用力实现动触头 7 与工作触头K1、K2及过渡触头 k1、k2 接触或分离的旋转永磁体5。 所述的旋转永磁体 5 两 侧 分别 被第一导磁体 4 和第二导磁体 6 的首端包覆，第一导磁体 4 和第二导磁体 6 的末端分别正对第一永磁体 1 和第二永磁体 3 。所述的第一永磁体1、第二永磁体3位于第一导磁体4及第二导磁体 6 之间且四者处于同一水平高度。 本实施例中对行程机构 2的结构形式不做任何限定，能够带动 动触头 7 与工作触头K1、K2及过渡触头 k1、k2 接触或分离 即可。
第一导磁体4、第二导磁体 6 被磁化成对应磁性的磁体，随着旋转永磁体5的旋转，对第一永磁体1和第二永磁体3产生吸引力和排斥力改变，从而控制运动磁体组动作，运动磁体组带动上方的行程机构2动作，行程机构2弧边上的动触头 7 在工作触头K1、K2和过渡触头 k1、k2 间发生切换。
如图3至图9所示，动触头 7 从工作触头K1切换到工作触头K2的过程如下：
图3所示，动触头 7 与工作触头K1接触 ；
图4所示，动触头 7 与工作触头K1、过渡触头 k1接触；
图5所示，动触头 7 与过渡触头 k1接触；
图6所示，动触头 7 与过渡触头 k1、k2接触；
图7所示，动触头 7 与过渡触头 k2 接触 ；
图8所示，动触头 7 与触头K2、过渡触头 k2 接触；
图9所示，动触头 7 与工作触头K2接触。
实施例二
一种永磁驱动有载调压开关，包括切换开关电路和快速机构，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，所述的快速机构包括用于承载动触头 7 的行程机构2、与行程机构2连接的运动磁体组以及对运动磁体组产生引力/斥力的固定磁体组；所述的运动磁体组包括旋转永磁体5、分别设置于旋转永磁体5两侧的第一导磁体4和第二导磁体 6 ，第一导磁体4和第二导磁体 6 远离旋转永磁体5的端面均正对固定磁体组；所述的固定磁体组包括分别正对第一导磁体4和第二导磁体 6 的第一永磁体1、第二永磁体3，两永磁体靠近导磁体的一端为同名磁极端。所述的第一导磁体4、第二导磁体 6 位于第一永磁体1及第二永磁体3之间且四者处于同一水平高度。 本实施例中对行程机构 2的结构形式不做任何限定，能够带动 动触头 7 与工作触头K1、K2及过渡触头 k1、k2 接触或分离 即可。
动触头 7 从工作触头K1切换到工作触头K2的过程同实施例一。

Claims (5)

1、 一种永磁驱动有载调压开关，包括切换开关电路和快速机构，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：所述的快速机构包括用于承载动触头的行程机构、与行程机构连接的运动磁体组以及对运动磁体组产生引力/斥力的固定磁体组；所述的运动磁体组包括同名磁极端连接在一起的第一永磁体和第二永磁体，第一永磁体和第二永磁体外露的同名磁极端均正对固定磁体组；所述的固定磁体组包括通过旋转改变对运动磁体组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旋转永磁体。
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：所述的旋转永磁体 两 侧 分别 被第一导磁体和第二导磁体 的首端包覆，第一导磁体和第二导磁体的末端分别正对第一永磁体和第二永磁体 。
3、 根据权利要求2所述的永磁驱动有载调压开关，其特征在于：所述的第一永磁体、第二永磁体位于第一导磁体及第二导磁体之间且四者 平齐 。
4、 一种永磁驱动有载调压开关，包括切换开关电路和快速机构，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：所述的快速机构包括用于承载动触头的行程机构、与行程机构连接的运动磁体组以及对运动磁体组产生引力/斥力的固定磁体组；所述的运动磁体组包括旋转永磁体、分别设置于旋转永磁体两侧的第一导磁体和第二导磁体，第一导磁体和第二导磁体远离旋转永磁体的端面均正对固定磁体组；所述的固定磁体组包括分别正对第一导磁体和第二导磁体的第一永磁体、第二永磁体，两永磁体靠近导磁体的一端为同名磁极端。
5、 根据权利要求4所述的永磁驱动有载调压开关，其特征在于：所述的第一导磁体、第二导磁体位于第一永磁体及第二永磁体之间且四者 平齐 。
PCT/CN2015/071676 2014-12-29 2015-01-28 一种永磁驱动有载调压开关 WO2016106916A1 (zh)

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