WO2014190458A1 - 一种复合式高压组合电器及其单极结构 - Google Patents

一种复合式高压组合电器及其单极结构 Download PDF

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Publication number
WO2014190458A1
WO2014190458A1 PCT/CN2013/001181 CN2013001181W WO2014190458A1 WO 2014190458 A1 WO2014190458 A1 WO 2014190458A1 CN 2013001181 W CN2013001181 W CN 2013001181W WO 2014190458 A1 WO2014190458 A1 WO 2014190458A1
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WIPO (PCT)
Prior art keywords
current transformer
fixed
outlet
circuit breaker
inlet
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Application number
PCT/CN2013/001181
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English (en)
French (fr)
Inventor
李禹生
沙云鹏
袁端磊
王海燕
Original Assignee
国家电网公司
平高集团有限公司
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Application filed by 国家电网公司, 平高集团有限公司 filed Critical 国家电网公司
Publication of WO2014190458A1 publication Critical patent/WO2014190458A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear

Definitions

  • the present invention relates to an SF6 gas insulated fully enclosed composite high voltage combination electric appliance and a monopole structure thereof.
  • a combined electrical appliance is a device that combines two or more high-voltage electrical appliances into a whole according to the main wiring requirements of the power system, and each high-voltage electrical appliance still maintains the original specified performance, and is classified into an open type and a fully enclosed type according to the insulation structure.
  • the combination of electrical appliances is generally multi-pole, each monopole is a separate structure, therefore, the selection of high-voltage electrical appliances in a single phase and the assembly of the assembly
  • the overall performance of the appliance (such as structure, volume, phase drive synchronization, mechanical stability, etc.) has a large impact.
  • a composite high-voltage combined electric appliance that is, a closed type, includes three single poles arranged at intervals, each of which includes a circuit breaker fixed on the bracket, and three circuit breakers are fixed on the circuit breaker.
  • a three-station isolated grounding switch arranged at right and left intervals, wherein the rightmost three-station isolated grounding switch is fixed with a casing through a plurality of current transformers, and the other two three-station isolated earthing switches
  • the casing is directly fixed on the upper side; among the three single poles, three three-station isolated earthing switches corresponding to the middle single pole are fixed on the upper part of the circuit breaker, that is, vertically installed, and the three sides of the side phase electrodes on both sides are correspondingly
  • the isolated earthing switches are mounted on the upper side of the respective circuit breakers, ie, tilted.
  • the combined electric appliance adopts the side-phase single-pole tilting installation method.
  • An object of the present invention is to provide a composite high-voltage combined electric appliance suitable for high-parameter current transformer assembly, which is used to solve the problem that the existing combination electrical appliance has low operation stability due to the monopolar tilt installation of the edge phase. problem.
  • the unipolar structure of the composite high-voltage combined electric appliance of the present invention adopts the following technical solution: a unipolar structure of a composite high-voltage combined electric appliance, including a circuit breaker moving along the left and right opening and closing, the upper part of the circuit breaker is vertically solid There are two current transformers arranged at intervals, wherein the upper part of the right current transformer is provided with a linear transmission type three-station isolated earthing switch which is moved along the left and right sides, and the movable contact of the three-station isolated earthing switch The head and the static contact of the circuit breaker are electrically connected to and vertically through the right electric conductor of the corresponding current transformer coil, and the right end of the three-station isolated earthing switch is fixed with an incoming line casing unit inclined to the upper right.
  • the incoming conductor of the incoming bushing unit is electrically connected to the isolated static contact of the three-station isolated grounding; the upper part of the left current transformer is fixed with an outgoing bushing unit inclined to the upper left, the outgoing bushing Outlet conductor of the unit
  • the movable contacts of the circuit breaker are electrically connected to and vertically pass through the left conductor of the corresponding current transformer coil.
  • the inlet sleeve unit is fixed on the three-station isolation ground through the inlet bending body, and one end of the bending body is separated from the three-station isolation grounding tube, and the right end of the grounding tube is detachably connected by a flange. The other end is fixed to the corresponding end of the incoming sleeve unit.
  • the outlet sleeve unit is fixed on the corresponding current transformer through the outlet bending body, and one end of the bending body is detachably connected to the corresponding current transformer through the flange, and the other end and the outlet sleeve unit are The corresponding end is fixed.
  • the two side-phase single-pole inlet and outlet bushing units of the three-phase single pole are respectively expanded outwardly with respect to the intermediate-phase single-pole inlet and outlet bushing units by rotating the corresponding bending body.
  • the circuit breaker is a tank type sulphur hexafluoride circuit breaker, and a first basin insulator separating the air chambers of the housing of the right side current transformer and the housing of the grounding switch a second basin insulator separating the air chambers of the housing of the grounding switch and the tube of the inlet bushing unit, the housing of the left current transformer and the body of the outlet sleeve unit There is a third basin insulator separating the air chambers of the two.
  • the composite high-voltage combined electric appliance of the present invention adopts the following technical solutions: a composite high-voltage combined electric appliance, comprising a bracket and three single poles arranged on the bracket and spaced apart in the front-rear direction, the monopole including the left and right sides
  • the circuit breaker of the opening and closing movement, the upper part of the circuit breaker is vertically fixed with two current transformers arranged at intervals, wherein the upper part of the right current transformer is fixed with a linear transmission type three along the left and right opening and closing movements.
  • the station isolating grounding switch, the movable contact of the three-station isolated earthing switch and the static contact of the circuit breaker are electrically connected, vertically passing through the right electric conductor of the corresponding current transformer coil, and the three-station isolation grounding switch
  • the right end is fixed with an inlet bushing unit inclined to the upper right, and the incoming conductor of the incoming bushing unit is electrically connected with the isolated static contact of the three-station isolated grounding switch; the upper part of the left current transformer is fixed
  • the inlet bushing unit is fixed on the three-station isolation ground through the incoming bending body, and one end of the curved body is separated from the three-station.
  • the right end of the grounding open pipe is detachably connected by a flange, and One end is fixed to the corresponding end of the inlet bushing unit.
  • the outlet sleeve unit is fixed on the corresponding current transformer through the outlet bending body, and one end of the bending body is detachably connected to the corresponding current transformer through the flange, and the other end and the outlet sleeve unit are The corresponding end is fixed.
  • the two side-phase single-pole inlet and outlet bushing units of the three-phase single pole are respectively expanded outward with respect to the intermediate-phase single-pole inlet and outlet bushing units by rotating the corresponding bending body.
  • the circuit breaker is a tank type sulphur hexafluoride circuit breaker, and a first basin insulator separating the air chambers of the casing of the right side current transformer and the housing of the grounding switch a second basin insulator separating the air chambers of the housing of the grounding switch and the tube of the inlet bushing unit, the housing of the left current transformer and the body of the outlet sleeve unit There is a third basin insulator separating the air chambers of the two.
  • FIG. 1 is a schematic structural view of an embodiment of a composite high voltage combination electric appliance of the present invention
  • Figure 2 is a right side view of Figure 1;
  • Figure 3 is a plan view of Figure 1;
  • Figure 4 is a cross-sectional view of the monopole structure of Figure 1.
  • Embodiment of the composite high-voltage combined electric appliance of the present invention As shown in FIG. 1-4, the bracket 1 is included, and the bracket 1 is fixed with three single poles arranged in the front-rear direction, and the single pole is connected by the circuit breaker 2.
  • the transformer 3, the grounding switch 6, the inlet bushing unit 4 and the outlet bushing unit 8 are formed.
  • the circuit breaker 2 adopts a horizontal tank sulphur hexafluoride circuit breaker, including a circuit breaker housing 21, and a circuit breaker static contact 22 is fixed on the right side of the circuit breaker housing 21, and the circuit breaker housing 21 is internally
  • the left and right guiding movements are equipped with a circuit breaker moving contact 23, and the left end of the circuit breaker moving contact 23 is drivingly connected to the first rotating shaft 9 of the operating mechanism through the first arm, under the rotation of the first rotating shaft 9,
  • the circuit breaker moving contact 23 is driven to move left and right and cooperates with the static contact of the circuit breaker to realize the opening and closing action of the circuit breaker 2.
  • the three-station isolation grounding switch 6 is fixed on the upper part of the right transformer housing, and is a linear transmission type three-station isolation grounding switch, including the switch housing 63.
  • the left side of the switch housing 63 is provided with a grounding static touch.
  • the head 62 is provided with an isolated static contact 65 on the right side, and a switching movable contact 64 is arranged between the ground static contact 62 and the isolated static contact 65 for guiding movement in the left-right direction, and the left end of the switching movable contact 64 is fixed.
  • the insulating rod 61, the left end of the insulating rod 61 is drivingly connected to the second rotating shaft 11 of the operating mechanism through the second arm, and under the action of the rotation of the second shaft 11, the movable moving contact 64 is driven to move left and right and is in contact with the ground.
  • the head 62 and the isolated static contact 65 cooperate to complete the grounding or isolating and closing action, and the switch moving contact 64 and the circuit breaker static contact 22 are electrically connected to the right side of the right current transformer coil.
  • Body 14 The inlet bushing unit 4 is fixed to the right end of the three-station isolation grounding switch 6 through the incoming bending body 7, and one end of the incoming bending body 7 and the right end of the three-station isolated grounding switch 6 are detachable through the flange The other end is fixed to the corresponding end of the incoming casing unit 4, and thus
  • the wire casing unit 4 is inclined to the upper right; the wire casing unit 4 includes an inlet pipe body 41 and an incoming conductor 42 axially inserted into the inlet pipe body 41, and the incoming conductor 42 is isolated.
  • the contacts 65 are electrically connected.
  • the outlet sleeve unit 8 is fixed on the left side current transformer through the outlet bending body 5, and one end of the outlet bending body 5 is detachably connected to the left side current transformer through the flange, and the other end and the outlet sleeve unit 8 The corresponding end is fixed, such that the outlet sleeve unit 8 is inclined to the upper left; the outlet sleeve unit 8 includes the outlet tube body 82 and the outgoing conductor 81 axially inserted into the outlet tube body 82, and the outgoing conductor 81 and A left conductor 9 that passes vertically through the left current transformer coil is electrically connected between the movable contact 23 of the circuit breaker.
  • a first basin insulator 12 is disposed between the right transformer housing and the switch housing 63, and the first basin insulator 12 isolates the air chamber and the three stations of the right current transformer from ground.
  • the air chamber of the switch 6 is separated;
  • a second basin insulator 13 is disposed between the switch housing 63 and the inlet tube body 41, and the second basin insulator 13 isolates the three stations from the air chamber and the inlet sleeve of the grounding switch.
  • the air cells of the pipe unit are separated;
  • a third basin insulator 10 is disposed between the left transformer housing and the outlet pipe body, and the third basin insulator 10 connects the air chamber and the outlet casing unit of the left current transformer The air chambers are separated.
  • each independent air chamber can be filled with SF6 gas of different pressures, which reduces the material cost, and can ensure that different modules are operated separately during transportation and maintenance, which reduces transportation difficulty and improves maintenance efficiency;
  • the dust generated by the arc extinguishing chamber can also be prevented from intruding into the three-station isolated earthing switch.
  • the inlet and outlet bending bodies are respectively detachably connected to the left side transformer and the three-station isolation grounding switch through the flange, the two side phase single pole inlet bushing units are rotated
  • the inlet bending body is respectively expanded outward, and the inlet sleeve unit corresponding to the intermediate single pole forms an angle of 30°; meanwhile, the single-phase outlet sleeve unit of the side phase is expanded by the rotating outlet bending body respectively, and
  • the intermediate single pole corresponding to the outlet sleeve unit is also called the 30° angle; thus the outer monopole inlet and outlet sleeves are opened to a certain angle to ensure a reliable insulation distance.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

一种复合式高压组合电器及其单极结构，该单极结构包括沿左右分合闸运动的断路器（2），断路器（2）的上部竖直固设有两个左右间隔布置的电流互感器（3），其中，右侧电流互感器的上部固设有沿左右分合闸运动的直线传动型三工位隔离接地开关（6），三工位隔离接地开关（6）的右端固设有朝右上方倾斜的进线套管单元（4）；左侧电流互感器的上部固设有朝左上方倾斜的出线套管单元（8）。这样的布局充分利用了空间，具有结构简单、布局合理的优点；单极均采用竖直安装的方式，使得相间传动联接部件均匀承载负荷，机械稳定性好。

Description

一种复合式高压组合电器及其单极结构 技术领域
[0001]本发明涉及一种 SF6气体绝缘全封闭复合式高压组合电器及其单极结构。
背景技术
[0002] 组合电器是将两种或两种以上的高压电器， 按电力系统主接线要求组成一个整体， 而各高压电器仍保持原规定性能的装置， 按绝缘结构分为敞开式和全封闭式。 组合电器一般 为多极布置， 各单极均为独立结构， 因此， 单相中的高压电器选择以及装配组合， 对整个组
说
合电器的整体性能 （如结构、 体积大小、 相间传动同步性、 机械稳定性等） 都有很大的影 响。
书
[0003]如中国专利 CN101989733A公开了一种复合式高压组合电器， 即为封闭式， 包括前 后间隔布置的三个单极， 各单极包括固定在支架上的断路器， 断路器上固设有三个左右间隔 布置的三工位隔离接地开关， 其中， 最右侧的三工位隔离接地开关通过其上固设得多电流互 感器固设有套管， 而另外两个三工位隔离接地开关上直接固设套管； 三个单极中， 中间单极 对应的三个三工位隔离接地开关均固设在断路器的上部， 即竖直安装， 两侧的边相电极对应 的三工位隔离接地开关均安装在各自断路器的侧上部， 即倾斜安装。 该组合电器采用边相单 极倾斜安装的方式， 当装配高参数的电流互感器后， 受互感器重力影响， 断路器相间传动轴 联轴节处承受较大应力， 影响断路器的操作稳定性及机械寿命； 同时， 单极的这种组合形 式， 采用三个三工位隔离接地开关， 成本高， 整体结构复杂， 而且整体高度较高， 无法合理 利用空间。
发明内容
[0004] 本发明的目的是提供一种适于高参数电流互感器装配的复合式高压组合电器， 用以 解决现有组合电器因边相单极倾斜安装导致的断路器操作稳定性不高的问题。
[0005] 本发明的复合式高压组合电器的单极结构采用如下技术方案： 一种复合式高压组合 电器的单极结构， 包括沿左右分合闸运动的断路器， 断路器的上部竖直固设有两个左右间隔 布置的电流互感器， 其中， 右侧电流互感器的上部固设有沿左右分合闸运动的直线传动型三 工位隔离接地开关， 三工位隔离接地开关的动触头与断路器的静触头之间导电连接有、 竖直 穿过对应电流互感器线圈的右导电体， 且三工位隔离接地开关的右端固设有朝右上方倾斜的 进线套管单元， 进线套管单元的进线导电体与三工位隔离接地丌关的隔离静触头导电连接； 左侧电流互感器的上部固设有朝左上方倾斜的出线套管单元， 出线套管单元的出线导电体与 断路器的动触头之间导电连接有、 竖直穿过对应电流互感器线圈的左导电体。
[0006]所述进线套管单元通过进线弯筒体固设在三工位隔离接地开上， 弯筒体的一端与三 工位隔离接地开管的右端通过法兰可拆固连、 另一端与进线套管单元的对应端固连。
【00071所述出线套管单元通过出线弯筒体固设在对应的电流互感器上， 弯筒体的一端通过 法兰与对应的电流互感器可拆固连、 另一端与出线套管单元的对应端固连。
[0008] 所述三相单极中的两个边相单极的进、 出线套管单元分别相对中间相单极的进、 出 线套管单元依靠旋转对应弯筒体的方式分别外扩。
[0009] 所述断路器为罐式六氟化硫断路器， 所述右侧电流互感器的壳体与接地开关的壳体 之间具有将二者的气室隔开的第一盆式绝缘子， 接地开关的壳体与进线套管单元的管体之间 具有将二者的气室隔开的第二盆式绝缘子， 左侧电流互感器的壳体与出线套管单元的管体之 间具有将二者的气室隔开的第三盆式绝缘子。
[0010] 本发明的复合式高压组合电器采用如下技术方案： 一种复合式高压组合电器， 包括 支架以及固设在支架上的、 沿前后方向间隔布置的三个单极， 单极包括沿左右分合闸运动的 断路器， 断路器的上部竖直固设有两个左右间隔布置的电流互感器， 其中， 右侧电流互感器 的上部固设有沿左右分合闸运动的直线传动型三工位隔离接地开关， 三工位隔离接地开关的 动触头与断路器的静触头之间导电连接有、 竖直穿过对应电流互感器线圈的右导电体， 且三 工位隔离接地开关的右端固设有朝右上方倾斜的进线套管单元， 进线套管单元的进线导电体 与三工位隔离接地开关的隔离静触头导电连接； 左侧电流互感器的上部固设有朝左上方倾斜 的出线套管单元， 出线套管单元的出线导电体与断路器的动触头之间导电连接有、 竖直穿过 对应电流互感器线圈的左导电体。
ί0011】所述进线套管单元通过进线弯筒体固设在三工位隔离接地开上， 弯筒体的一端与三工 位隔离接地开管的右端通过法兰可拆固连、 另一端与进线套管单元的对应端固连。
[0012] 所述出线套管单元通过出线弯筒体固设在对应的电流互感器上， 弯筒体的一端通过 法兰与对应的电流互感器可拆固连、 另一端与出线套管单元的对应端固连。
[0013] 所述三相单极中的两个边相单极的进、 出线套管单元分别相对中间相单极的进、 出 线套管单元依靠旋转对应弯筒体的方式分别外扩。
[0014] 所述断路器为罐式六氟化硫断路器， 所述右侧电流互感器的壳体与接地开关的壳体 之间具有将二者的气室隔开的第一盆式绝缘子， 接地开关的壳体与进线套管单元的管体之间 具有将二者的气室隔开的第二盆式绝缘子， 左侧电流互感器的壳体与出线套管单元的管体之 间具有将二者的气室隔开的第三盆式绝缘子。 [0015] 采用上述结构的单极结构， 由于断路器上的上部竖直固设有两个电流互感器， 其中 一个电流互感器上固设有直线传动型三工位隔离接地开关， 而进线套管单元固设在三工位隔 离接地开关上， 出线套管单元固设在另一个电流互感器上， 这样的布局充分利用了空间， 具 有结构简单、 布局合理的优点； 更重要的是， 单极均采用竖直安装的方式， 使得相间传动联 接部件均勾承载负荷， 机械稳定性好。
附图说明
[0016] 图 1为本发明的复合式高压组合电器的一种实施例的结构示意图；
图 2为图 1的右视图；
图 3为图 1的俯视图；
图 4为图 1中的单极结构的剖视图。
具体实施方式
[0017]本发明复合式高压组合电器的实施例： 如图 1-4所示， 包括支架 1， 支架 1上固设有 三个沿前后方向间隔布置的单极， 单极由断路器 2、 电流互感器 3、 接地开关 6、 进线套管 单元 4和出线套管单元 8构成。
[0018] 断路器 2采用横卧的罐式六氟化硫断路器， 包括断路器壳体 21， 断路器壳体 21内部 右侧固设有断路器静触头 22， 断路器壳体 21 内部左侧左右导向移动装配有断路器动触头 23, 断路器动触头 23的左端部通过第一拐臂与操动机构的第一转轴 9传动连接， 在第一转 轴 9的旋转作用下， 驱动断路器动触头 23左右运动并与断路器静触头配合实现断路器 2的 分合闸动作。
【0019】 电流互感器 3有两个， 分别为外置式电流互感器， 两个电流互感器 3分别竖直固设 在断路器壳体 21的上部并左右间隔布置， 包括互感器壳体 32以及设置在互感器壳体 32内 的线圈 31。 三工位隔离接地开关 6 固设在右侧互感器壳体的上部， 且为直线传动型三工位 隔离接地开关， 包括开关壳体 63， 开关壳体 63内部的左侧设有接地静触头 62、 右侧设有隔 离静触头 65， 接地静触头 62和隔离静触头 65之间设有沿左右方向导向移动的开关动触头 64, 开关动触头 64的左端固设有绝缘拉杆 61， 绝缘拉杆 61 的左端通过第二拐臂与操动机 构的第二转轴 11传动连接， 在第二转轴 11 的旋转作用下， 驱动幵关动触头 64左右运动并 与接地静触头 62和隔离静触头 65配合完成接地或隔离分合闸动作， 开关动触头 64与断路 器静触头 22之间还导电连接有竖直穿过右侧电流互感器线圈的右侧导电体 14。 进线套管单 元 4通过进线弯筒体 7固设在三工位隔离接地开关 6的右端， 进线弯筒体 7的一端与三工位 隔离接地开关 6的右端通过法兰可拆固连、 另一端与进线套管单元 4的对应端固连， 这样进 线套管单元 4朝右上方倾斜设置； 进线套管单元 4包括进线管体 41 以及轴向插装在进线管 体 41内的进线导电体 42， 进线导电体 42与隔离静触头 65导电连接。 出线套管单元 8通过 出线弯筒体 5固设在左侧电流互感器上， 出线弯筒体 5的一端通过法兰与左侧电流互感器可 拆固连、 另一端与出线套管单元 8的对应端固连， 这样出线套管单元 8朝左上方倾斜设置； 出线套管单元 8包括出线管体 82以及轴向插装在出线管体 82内的出线导电体 81， 出线导 电体 81与断路器动触头 23之间导电连接有竖直穿过左侧电流互感器线圈的左导电体 9。
[0020]作为进一步优化， 右侧互感器壳体与开关壳体 63之间设有第一盆式绝缘子 12， 第一 盆式绝缘子 12将右侧电流互感器的气室和三工位隔离接地开关 6的气室隔开； 在开关壳体 63和进线管体 41之间设有第二盆式绝缘子 13， 第二盆式绝缘子 13将三工位隔离接地开关 的气室和进线套管单元的气室隔开； 在左侧互感器壳体与出线管体之间设有第三盆式绝缘子 10, 第三盆式绝缘子 10将左侧电流互感器的气室和出线套管单元的气室隔开。 这样每个独 立的气室均可以充入不同压力的 SF6气体， 降低了材料成本， 还可以保证运输及维护时不同 模块单独进行操作， 降低了运输难度， 提髙了维护效率； 另外， 在断路器分合闸过程中， 还 能防止器灭弧室产生的粉尘侵入到三工位隔离接地开关内。
[0021] 作为进一步优化， 由于进、 出线弯筒体均通过法兰分别与左侧互感器和三工位隔离 接地开关可拆固连， 两个边相单极的进线套管单元通过旋转进线弯筒体分别外扩， 与中间单 极对应的进线套管单元之间成 30° 夹角； 同时， 边相单极的出线套管单元通过旋转出线弯 筒体分别外扩， 与中间单极对应的出线套管单元之间也称 30° 夹角； 这样外侧单极的进、 出套管向外打开一定角度， 从而保证可靠的绝缘距离。
[0022]本发明的单极结构的实施例： 如图 1-4所示， 与上述实施例中的单极的结构一致， 其 内容在此不再赘述。

Claims

权 利 要 求 书
1. 一种复合式高压组合电器的单极结构， 其特征在于： 包括沿左右分合闸运动 的断路器， 断路器的上部竖直固设有两个左右间隔布置的电流互感器， 其中， 右 侧电流互感器的上部固设有沿左右分合闸运动的直线传动型三工位隔离接地开 关，三工位隔离接地幵关的动触头与断路器的静触头之间导电连接有、竖直穿过 对应电流互感器线圈的右导电体，且三工位隔离接地开关的右端固设有朝右上方 倾斜的进线套管单元，迸线套管单元的进线导电体与三工位隔离接地开关的隔离 静触头导电连接； 左侧电流互感器的上部固设有朝左上方倾斜的出线套管单元， 出线套管单元的出线导电体与断路器的动触头之间导电连接有、竖直穿过对应电 流互感器线圈的左导电体。
2. 根据权利要求 1所述的复合式高压组合电器的单极结构， 其特征在于： 所述 进线套管单元通过进线弯筒体固设在三工位隔离接地开上，弯筒体的一端与三工 位隔离接地幵管的右端通过法兰可拆固连、 另一端与进线套管单元的对应端固 连。
3. 根据权利要求 2所述的复合式高压组合电器的单极结构， 其特征在于： 所述 出线套管单元通过出线弯筒体固设在对应的电流互感器上，弯筒体的一端通过法 兰与对应的电流互感器可拆固连、 另一端与出线套管单元的对应端固连。
4. 根据权利要求 3所述的复合式高压组合电器的单极结构， 其特征在于： 所述 三相单极中的两个边相单极的进、出线套管单元分别相对中间相单极的进、出线 套管单元依靠旋转对应弯筒体的方式分别外扩。
5. 根据权利要求 1-4任意一项所述的复合式高压组合电器的单极结构， 其特征 在于：所述断路器为罐式六氟化硫断路器，所述右侧电流互感器的壳体与接地开 关的壳体之间具有将二者的气室隔开的第一盆式绝缘子，接地开关的壳体与进线 套管单元的管体之间具有将二者的气室隔开的第二盆式绝缘子，左侧电流互感器 的壳体与出线套管单元的管体之间具有将二者的气室隔开的第三盆式绝缘子。
6. —种复合式高压组合电器， 包括支架以及固设在支架上的、 沿前后方向间隔 布置的三个单极，其特征在于： 单极包括沿左右分合闸运动的断路器， 断路器的 上部竖直固设有两个左右间隔布置的电流互感器，其中，右侧电流互感器的上部 固设有沿左右分合闸运动的直线传动型三工位隔离接地开关，三工位隔离接地开 关的动触头与断路器的静触头之间导电连接有、竖直穿过对应电流互感器线圈的 右导电体， 且三工位隔离接地开关的右端固设有朝右上方倾斜的进线套管单元， 进线套管单元的进线导电体与三工位隔离接地开关的隔离静触头导电连接;左侧 电流互感器的上部固设有朝左上方倾斜的出线套管单元，出线套管单元的出线导 电体与断路器的动触头之间导电连接有、竖直穿过对应电流互感器线圈的左导电 体。
7. 根据权利要求 6所述的复合式高压组合电器， 其特征在于： 所述进线套管单 元通过进线弯筒体固设在三工位隔离接地开上，弯筒体的一端与三工位隔离接地 开管的右端通过法兰可拆固连、 另一端与进线套管单元的对应端固连。
8. 根据权利要求 7所述的复合式高压组合电器， 其特征在于： 所述出线套管单 元通过出线弯筒体固设在对应的电流互感器上，弯筒体的一端通过法兰与对应的 电流互感器可拆固连、 另一端与出线套管单元的对应端固连。
9. 根据权利要求 8所述的复合式高压组合电器， 其特征在于： 所述三相单极中 的两个边相单极的进、出线套管单元分别相对中间相单极的进、出线套管单元依 靠旋转对应弯筒体的方式分别外扩。
10. 根据权利要求 6-9任意一项所述的复合式高压组合电器，其特征在于：所述 断路器为罐式六氟化硫断路器，所述右侧电流互感器的壳体与接地开关的壳体之 间具有将二者的气室隔开的第一盆式绝缘子，接地开关的壳体与进线套管单元的 管体之间具有将二者的气室隔开的第二盆式绝缘子，左侧电流互感器的壳体与出 线套管单元的管体之间具有将二者的气室隔开的第三盆式绝缘子。
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