JP2014149990A - Earthing switch - Google Patents

Earthing switch Download PDF

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JP2014149990A
JP2014149990A JP2013018605A JP2013018605A JP2014149990A JP 2014149990 A JP2014149990 A JP 2014149990A JP 2013018605 A JP2013018605 A JP 2013018605A JP 2013018605 A JP2013018605 A JP 2013018605A JP 2014149990 A JP2014149990 A JP 2014149990A
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main circuit
grounding
ground
side opening
closing
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Rina Shibayama
理奈 柴山
Junichi Sato
純一 佐藤
Osamu Tagaya
治 多賀谷
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Toshiba Corp
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Abstract

PROBLEM TO BE SOLVED: To suppress the installation space of an earthing switch in which two make and break parts are electrically connected in series in each phase.SOLUTION: In an earthing switch constituted of main circuit side making and breaking parts 2a, 2b, 2c connected with three-phase main circuit conductors 1, and a ground side making and breaking part 3 connected in series with the main circuit side making and breaking parts 2a, 2b, 2c, there are three main circuit side making and breaking parts 2a, 2b, 2c for connection with respective phases, and one ground side making and breaking part 3 for three-phase collective connection. When making or breaking or grounding the main circuit side making and breaking parts 2a, 2b, 2c and the ground side making and breaking part 3 simultaneously, the ground side making and breaking part 3 is closed earlier than the main circuit side making and breaking parts 2a, 2b, 2c, and the ground side making and breaking part 3 is opened later than the main circuit side making and breaking parts 2a, 2b, 2c when making.

Description

本発明の実施形態は、三相の主回路導体を接地する接地開閉装置に関する。   Embodiments described herein relate generally to a ground switchgear for grounding a three-phase main circuit conductor.

従来、主回路導体を接地する接地開閉装置においては、開閉性能向上や絶縁性能向上などの観点から、二台の開閉部を直列接続したものが知られている(例えば、特許文献1参照。)。   2. Description of the Related Art Conventionally, as a ground switching device for grounding a main circuit conductor, a device in which two switching units are connected in series is known from the viewpoint of improving switching performance and insulating performance (for example, see Patent Document 1). .

しかしながら、各相で二台の開閉部を用いるため、総数六台の開閉部となり、大きな設置スペースを確保しなければならず、装置全体が大型化する問題があった。なお、各相を一台の開閉部で構成しようとすると、開閉部自体を大型化なければならず、結果的に装置全体が大型化する。これらは、最近の趨勢である縮小化に逆行するものである。   However, since two opening / closing parts are used in each phase, the total number of opening / closing parts is six, and a large installation space has to be ensured, resulting in a problem that the entire apparatus becomes large. If each phase is configured with a single opening / closing part, the opening / closing part itself must be enlarged, resulting in an increase in the size of the entire apparatus. These go against the recent trend of shrinking.

特開2006−42472号公報JP 2006-42472 A

本発明が解決しようとする課題は、絶縁性能向上のため、二台の開閉部を電気的に直列接続するものの、設置スペースを抑え、装置全体の縮小化を図り得る接地開閉装置を提供することにある。   The problem to be solved by the present invention is to provide a grounding switchgear that can reduce installation space while reducing the installation space, although two open / close parts are electrically connected in series to improve insulation performance. It is in.

上記課題を解決するために、実施形態の接地開閉装置は、三相の主回路導体に接続される主回路側開閉部と、前記主回路側開閉部に直列接続される接地側開閉部とで構成される接地開閉装置であって、前記主回路側開閉部を各相に接続する三台とし、前記接地側開閉部を三相一括接続する一台とするとともに、前記主回路側開閉部と前記接地側開閉器とを同時に開閉操作することを特徴とする。   In order to solve the above-described problem, the ground switchgear according to the embodiment includes a main circuit side switch that is connected to a three-phase main circuit conductor, and a ground side switch that is connected in series to the main circuit side switch. The ground switchgear comprising: three main circuit side open / close parts connected to each phase; and one ground side open / close part connected to three phases at a time; and the main circuit side open / close part; The ground side switch is simultaneously opened and closed.

本発明の実施例1に係る接地開閉装置の構成を示す図。The figure which shows the structure of the earthing | grounding switchgear which concerns on Example 1 of this invention. 本発明の実施例2に係る接地開閉装置の構成を示す図。The figure which shows the structure of the earthing | grounding switchgear which concerns on Example 2 of this invention. 本発明の実施例3に係る接地開閉装置の構成を示す図。The figure which shows the structure of the earthing | grounding switchgear which concerns on Example 3 of this invention. 本発明の実施例4に係る接地開閉装置の構成を示す図。The figure which shows the structure of the earthing | grounding switchgear which concerns on Example 4 of this invention.

以下、図面を参照して本発明の実施例を説明する。   Embodiments of the present invention will be described below with reference to the drawings.

先ず、本発明の実施例1に係る接地開閉装置を図1を参照して説明する。図1は、本発明の実施例1に係る接地開閉装置の構成を示す図である。   First, a ground switchgear according to Embodiment 1 of the present invention will be described with reference to FIG. 1 is a diagram illustrating a configuration of a ground switchgear according to a first embodiment of the present invention.

図1に示すように、三相の主回路導体1には、各相に主回路側開閉部2a、2b、2cの電源側端子をそれぞれ接続し、負荷側端子の三相を一括接続している。一括接続した負荷側端子は、接地側開閉部3の電源側端子に接続し、負荷側端子を接地極に接続している。即ち、各相で二台の開閉部を直列接続するものの、主回路側では各相で開閉部2a、2b、2cを独立させ、接地側では三相で共通した開閉部3としている。各開閉部2a、2b、2c、3には、小型軽量を図れる真空開閉器を用いる。主回路側開閉部2a、2b、2cには、主回路側操作機構4a、4b、4c、接地側開閉部3には、接地側操作機構5が設けられている。   As shown in FIG. 1, the three-phase main circuit conductor 1 is connected to the power supply side terminals of the main circuit side opening / closing sections 2a, 2b, 2c, and the three phases of the load side terminals are connected to each phase. Yes. The load side terminals connected in a lump are connected to the power source side terminal of the ground side opening / closing part 3, and the load side terminal is connected to the ground electrode. That is, although two open / close sections are connected in series for each phase, the open / close sections 2a, 2b and 2c are independent for each phase on the main circuit side, and the common open / close section 3 for the three phases is used on the ground side. For each of the opening / closing sections 2a, 2b, 2c, 3, vacuum switches that can be made compact and lightweight are used. The main circuit side opening / closing sections 2a, 2b, 2c are provided with main circuit side operating mechanisms 4a, 4b, 4c, and the ground side opening / closing section 3 is provided with a ground side operating mechanism 5.

次に、操作機構4a、4b、4c、5の開閉操作を説明する。主回路側操作機構4a、4b、4cと接地側操作機構5は、基本的には全て同時に開閉操作される。しかしながら、少なくとも、接地時には、主回路側開閉部2a、2b、2cよりも接地側開閉部3を早く閉路させる。主回路側開閉部2a、2b、2cの全てが早く閉路して三相短絡を起こすことを防ぐためである。開路時には、この逆で、主回路側開閉部2a、2b、2cよりも接地側開閉部3を遅く開路させる。   Next, opening / closing operations of the operation mechanisms 4a, 4b, 4c, and 5 will be described. The main circuit side operation mechanisms 4a, 4b and 4c and the ground side operation mechanism 5 are basically opened and closed simultaneously. However, at least during grounding, the ground side opening / closing part 3 is closed earlier than the main circuit side opening / closing parts 2a, 2b, 2c. This is to prevent all of the main circuit side opening / closing sections 2a, 2b, 2c from closing quickly and causing a three-phase short circuit. When the circuit is opened, the ground side opening / closing part 3 is opened later than the main circuit opening / closing parts 2a, 2b, 2c.

これにより、各相の対地間には、二台の開閉部2a−3、2b−3、2c−3が電気的に直列接続されることになり、電圧分担が行われ、絶縁性能を向上させることができる。また、従来では、六台の開閉部が必要であったが、四台でよく、設置スペースを大幅に縮小することができる。なお、主回路側開閉部2a、2b、2cよりも接地側開閉部3の通電容量を大きくすれば、二相や三相地絡時などで信頼性を向上させることができる。   As a result, two open / close sections 2a-3, 2b-3, and 2c-3 are electrically connected in series between the grounds of the respective phases, voltage sharing is performed and insulation performance is improved. be able to. Conventionally, six open / close portions are required, but four may be sufficient, and the installation space can be greatly reduced. Note that if the energization capacity of the ground side opening / closing part 3 is made larger than that of the main circuit side opening / closing parts 2a, 2b, 2c, the reliability can be improved in the case of a two-phase or three-phase ground fault.

上記実施例1の接地開閉装置によれば、三相の主回路導体1のそれぞれに主回路側開閉部2a、2b、2cの電源側端子を接続し、負荷側端子を三相一括接続して接地側開閉部3の電源側端子に接続し、負荷側端子を接地極に接続しているので、各相を二台の開閉部2a−3、2b−3、2c−3で電気的に直列接続することができ、絶縁性能を向上させることができる。また、設置スペースの縮小化を大幅に図ることができ、コスト低減も図ることができる。   According to the ground switch of the first embodiment, the power supply side terminals of the main circuit side open / close sections 2a, 2b, and 2c are connected to the three-phase main circuit conductors 1, and the load side terminals are connected in a three-phase manner. Since the load side terminal is connected to the ground electrode, and the phases are electrically connected in series by the two open / close parts 2a-3, 2b-3, 2c-3. It can be connected and the insulation performance can be improved. Further, the installation space can be greatly reduced, and the cost can be reduced.

次に、本発明の実施例2に係る接地開閉装置を図2を参照して説明する。図2は、本発明の実施例2に係る接地開閉装置の構成を示す図である。なお、この実施例2が実施例1と異なる点は、主回路側操作機構を一体化したことである。図2において、実施例1と同様の構成部分においては、同一符号を付し、その詳細な説明を省略する。   Next, a ground switchgear according to Embodiment 2 of the present invention will be described with reference to FIG. FIG. 2 is a diagram illustrating a configuration of a ground switchgear according to Embodiment 2 of the present invention. The second embodiment is different from the first embodiment in that the main circuit side operation mechanism is integrated. In FIG. 2, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

図2に示すように、主回路側開閉部2a、2b、2cには、三相を同時に開閉操作する主回路側操作機構4dを設けている。主回路側開閉部2a、2b、2cは、三相分の軸方向が横一列配置される。主回路側開閉部2a、2b、2cと接地側開閉部3は、主回路導体1から接地極に向かって、開閉部2a、2b、2c、3の軸方向が縦一列配置される。   As shown in FIG. 2, the main circuit side opening / closing sections 2a, 2b, 2c are provided with a main circuit side operation mechanism 4d for opening and closing the three phases simultaneously. The main circuit side opening / closing sections 2a, 2b, and 2c are arranged in a row in the axial direction of three phases. The main circuit side opening / closing parts 2a, 2b, 2c and the ground side opening / closing part 3 are arranged in a line in the axial direction of the opening / closing parts 2a, 2b, 2c, 3 from the main circuit conductor 1 toward the ground electrode.

上記実施例2の接地開閉装置によれば、実施例1による効果のほかに、操作機構4d、5の設置スペースの縮小化を図ることができる。   According to the grounding switching device of the second embodiment, in addition to the effects of the first embodiment, the installation space for the operation mechanisms 4d and 5 can be reduced.

次に、本発明の実施例3に係る接地開閉装置を図3を参照して説明する。図3は、本発明の実施例3に係る接地開閉装置の構成を示す図である。なお、この実施例3が実施例2と異なる点は、全ての操作機構を共用としたことである。図3において、実施例2と同様の構成部分においては、同一符号を付し、その詳細な説明を省略する。   Next, a ground switchgear according to Embodiment 3 of the present invention will be described with reference to FIG. FIG. 3 is a diagram illustrating a configuration of a grounding switching device according to a third embodiment of the present invention. The third embodiment is different from the second embodiment in that all operation mechanisms are shared. In FIG. 3, the same components as those in the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

図3に示すように、主回路側開閉部2a、2b、2cと接地側開閉部3には、全てを一括して開閉操作する共用操作機構6を設けている。また、必要により、接地時には、主回路側開閉部2a、2b、2cよりも接地側開閉部3を早く閉路させ、開路時には、この逆で、主回路側開閉部2a、2b、2cよりも接地側開閉部3を遅く開路させる操作調整機構7を設けている。   As shown in FIG. 3, the main circuit side opening / closing parts 2a, 2b, 2c and the grounding side opening / closing part 3 are provided with a common operation mechanism 6 for opening / closing them all at once. If necessary, the ground-side opening / closing part 3 is closed earlier than the main circuit-side opening / closing parts 2a, 2b, 2c when grounding, and the reverse is the reverse of the main circuit-side opening / closing parts 2a, 2b, 2c when opening. An operation adjusting mechanism 7 for opening the side opening / closing part 3 late is provided.

上記実施例3の接地開閉装置によれば、実施例2による効果のほかに、操作機構の設置スペースの縮小化を図ることができる。   According to the grounding switching device of the third embodiment, in addition to the effects of the second embodiment, the installation space for the operation mechanism can be reduced.

次に、本発明の実施例4に係る接地開閉装置を図4を参照して説明する。図4は、本発明の実施例4に係る接地開閉装置の構成を示す図である。なお、この実施例4が実施例3と異なる点は、開閉部をL字状配置としたことである。図4において、実施例3と同様の構成部分においては、同一符号を付し、その詳細な説明を省略する。   Next, a ground switchgear according to Embodiment 4 of the present invention will be described with reference to FIG. FIG. 4 is a diagram illustrating a configuration of a grounding switching device according to a fourth embodiment of the present invention. The fourth embodiment is different from the third embodiment in that the opening / closing portion is arranged in an L shape. In FIG. 4, the same components as those in the third embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

図4に示すように、主回路側開閉部2a、2b、2cの横一列配置に対し、接地側開閉部3の軸方向を直交させて配置するL字状配置としている。共用操作機構6は、L字状の内側に配置している。   As shown in FIG. 4, it is set as the L-shape arrangement | positioning which makes the axial direction of the ground side opening / closing part 3 orthogonally cross with respect to the horizontal line arrangement of the main circuit side opening / closing parts 2a, 2b, 2c. The shared operation mechanism 6 is disposed inside the L shape.

上記実施例4の接地開閉装置によれば、実施例3による効果のほかに、装置全体で設置スペースの縮小化を図ることができる。   According to the grounding switching device of the fourth embodiment, in addition to the effects of the third embodiment, the installation space can be reduced throughout the device.

以上述べたような実施形態によれば、各相で開閉部を二台直列接続して絶縁性能を向上させ、設置スペースの縮小化を図ることができる。   According to the embodiment as described above, it is possible to improve the insulation performance by connecting two open / close parts in series in each phase, and to reduce the installation space.

本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

1 主回路導体
2a、2b、2c 主回路側開閉部
3 接地側開閉部
4a、4b、4c、4d 主回路側操作機構
5 接地側操作機構
6 共用操作機構
7 操作調整機構
DESCRIPTION OF SYMBOLS 1 Main circuit conductor 2a, 2b, 2c Main circuit side opening / closing part 3 Ground side opening / closing part 4a, 4b, 4c, 4d Main circuit side operation mechanism 5 Ground side operation mechanism 6 Shared operation mechanism 7 Operation adjustment mechanism

Claims (5)

三相の主回路導体に接続される主回路側開閉部と、
前記主回路側開閉部に直列接続される接地側開閉部とで構成される接地開閉装置であって、
前記主回路側開閉部を各相に接続する三台とし、
前記接地側開閉部を三相一括接続する一台とするとともに、
前記主回路側開閉部と前記接地側開閉器とを同時に開閉操作することを特徴とする接地開閉装置。
A main circuit side opening / closing portion connected to a three-phase main circuit conductor;
A ground switchgear constituted by a ground side switchgear connected in series to the main circuit side switchgear,
The main circuit side opening and closing unit is three units connected to each phase,
With the ground side opening / closing part as a single unit for three-phase connection,
A grounding switch for simultaneously opening and closing the main circuit side switch and the ground side switch.
前記主回路側開閉部と前記接地側開閉部との全てを共用操作機構で開閉操作することを特徴とする請求項1に記載の接地開閉装置。   The grounding switching device according to claim 1, wherein all of the main circuit side switching unit and the grounding side switching unit are opened and closed by a common operation mechanism. 三相の主回路導体に接続される主回路側開閉部と、
前記主回路側開閉部に直列接続される接地側開閉部とで構成される接地開閉装置であって、
前記主回路側開閉部を各相に接続する三台とし、
前記接地側開閉部を三相一括接続する一台とするとともに、
接地時には、前記主回路側開閉部よりも前記接地側開閉部を早く閉路させ、
開路時には、前記主回路側開閉部よりも前記接地側開閉部を遅く開路させることを特徴とする接地開閉装置。
A main circuit side opening / closing portion connected to a three-phase main circuit conductor;
A ground switchgear constituted by a ground side switchgear connected in series to the main circuit side switchgear,
The main circuit side opening and closing unit is three units connected to each phase,
With the ground side opening / closing part as a single unit for three-phase connection,
At the time of grounding, the ground side opening / closing part is closed earlier than the main circuit side opening / closing part,
A grounding switchgear that opens the grounding side opening / closing part later than the main circuit side opening / closing part when the circuit is opened.
前記主回路側開閉部と前記接地側開閉部との全てを共用操作機構で開閉操作するとともに、前記共用操作機構に操作調整機構を設けたことを特徴とする請求項3に記載の接地開閉装置。   4. The grounding switching device according to claim 3, wherein all of the main circuit side switching unit and the grounding side switching unit are opened and closed by a common operation mechanism, and an operation adjustment mechanism is provided in the common operation mechanism. . 前記主回路側開閉部と前記接地側開閉部とをL字状配置とし、このL字状の内側に操作機構を配置したことを特徴とする請求項1乃至請求項4のいずれか1項に記載の接地開閉装置。   5. The main circuit side opening / closing part and the grounding side opening / closing part are arranged in an L shape, and an operation mechanism is arranged inside the L shape. The grounding switchgear described.
JP2013018605A 2013-02-01 2013-02-01 Earthing switch Pending JP2014149990A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112509850A (en) * 2020-11-19 2021-03-16 广东电网有限责任公司 Ground knife electric locking device and circuit interval with same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112509850A (en) * 2020-11-19 2021-03-16 广东电网有限责任公司 Ground knife electric locking device and circuit interval with same

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