KR101100711B1 - Switching mechanism for switchgear - Google Patents

Switching mechanism for switchgear Download PDF

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Publication number
KR101100711B1
KR101100711B1 KR1020100081669A KR20100081669A KR101100711B1 KR 101100711 B1 KR101100711 B1 KR 101100711B1 KR 1020100081669 A KR1020100081669 A KR 1020100081669A KR 20100081669 A KR20100081669 A KR 20100081669A KR 101100711 B1 KR101100711 B1 KR 101100711B1
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KR
South Korea
Prior art keywords
contactor
fixed
contact
fixed contactor
switchgear
Prior art date
Application number
KR1020100081669A
Other languages
Korean (ko)
Inventor
이민오
Original Assignee
엘에스산전 주식회사
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Application filed by 엘에스산전 주식회사 filed Critical 엘에스산전 주식회사
Priority to KR1020100081669A priority Critical patent/KR101100711B1/en
Application granted granted Critical
Publication of KR101100711B1 publication Critical patent/KR101100711B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/023—Base and stationary contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

PURPOSE: The grounding opening and closing tool of a switch gear is provided to simplify configuration using one movable contactor for a first fixing contactor and a second fixing contactor. CONSTITUTION: A first fixing contactor(1) for input is electrically connected to the power source or the load side of a power circuit. A second fixing contactor(2) for grounding is grounded. The first fixing contactor and the second fixing contactor respectively comprise a connection blade. A movable element assembly(3) is electrically connected to the power source or the load side of the power circuit. The movable element assembly moves to a third position which is neutral position separated from the first fixing contactor and the second fixing contactor. A rotating lever is shafted in a rotary driving axis.

Description

Switchgear Ground Switch Mechanism {SWITCHING MECHANISM FOR SWITCHGEAR}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchgear used for the distribution of large capacity high voltage or ultra high voltage power, and more particularly to a grounding switch mechanism of a switchgear.

For example, a switchgear with a rated voltage of 72.5 kilovolts is a power device used for distribution of substations or large-capacity power consumers. Such a switchgear may be constituted by a gas insulated switchgear for accommodating main components of the switchgear such as a disconnector, a ground switch, and a breaker in a tank filled with SOHO gas.

The present invention relates to a mechanism of a grounding switch in such a switchgear. The grounding switch according to the prior art has a swithcing mechanism for opening and closing of a disconnector and an opening and closing mechanism for opening and closing of a grounding switch separately. It has a constructed structure.

Therefore, the ground opening and closing mechanism according to the prior art has a larger volume of the tank for accommodating the grounding and energizing opening and closing, respectively, and takes a long time to manufacture and increases the manufacturing cost due to the complicated configuration. There was also a high probability of failure.

Accordingly, the present invention solves the problems of the prior art, the object of the present invention is to reduce the storage volume by configuring the switchgear of the ground switch and the switchgear of the disconnector in a common single configuration, the configuration is simplified It is to provide a grounding switch mechanism of the switchgear that the manufacturing productivity is improved compared to the conventional and the manufacturing cost is reduced, and the occurrence of defects during manufacturing can be minimized as compared with the prior art.

The object of the present invention, in the ground opening and closing mechanism of the switchgear,

A first fixed contactor for closing connected electrically to the power supply or load side of the power circuit;

A second fixed contactor for grounding; And

A first position electrically connected to the power supply or load side of the power circuit, the first position contacting the first fixed contactor for circuit input, the second position contacting the second fixed contactor for grounding, and a disconnection In order to provide a ground opening and closing mechanism of the switchgear according to the present invention, characterized in that it comprises a; movable assembly assembly rotatable to a third position which is a neutral position separated from the first fixed contactor and the second fixed contactor. Can be achieved.

The ground opening and closing mechanism of the switchgear according to the present invention has a structure in which one movable contactor is commonly used for the first fixed contactor for input and the second fixed contactor for grounding, so that the storage volume can be reduced and the configuration is simplified. Manufacturing productivity is improved compared to the prior art and the manufacturing cost is reduced, there is an effect to obtain a grounding switch mechanism of the switchgear which can be minimized compared to the prior art generation of defects during the manufacturing.

In the ground opening / closing mechanism of the switchgear according to the present invention, the first fixed contact and the second fixed contact each include a connecting blade, so that the movable contactor is in contact with or separated from the connecting blade. The operation can be easily achieved can be obtained.

In the ground opening and closing mechanism of the switchgear according to the present invention, the mover assembly is connected to a rotary drive shaft, a rotary lever (LEVER) which is rotated and rotated by the rotary drive shaft, and rotates together with the rotary lever. It comprises a movable contactor having a pair of opposing plates so as to sandwich the connecting blades of the first fixed contact and the second fixed contact between the contact, so that the movable contact is rotated in common to the first and second fixed contact It is possible to obtain the effect that it is possible to contact or disconnect and to make contact between the connecting blades of the first and second fixed contact between.

In the ground opening / closing mechanism of a switchgear according to the present invention, a movable contact includes at least one pair of opposing contact plates and each of the contactors, which elastically sandwich the connecting blades of the first and second fixed contacts. Since it includes a contact protrusion fixed to the end of the plate, the connection blades of the first fixed contactor and the second fixed contactor can be elastically sandwiched between the pair of contactor plates of the movable contactor so that the contact force can be maintained firmly. It works.

1 is a cross-sectional view showing the configuration of the ground opening and closing mechanism of the switchgear according to an embodiment of the present invention,
2 is an operational state diagram showing a movable contactor, a first fixed contactor, and a second fixed contactor when the switch gear is in the ground opening / closing mechanism according to the embodiment of the present invention;
3 is an operational state diagram showing a movable contactor, a first fixed contactor and a second fixed contactor when the switchgear is in a cut-off (neutral) state in a grounding switch mechanism according to an embodiment of the present invention;
4 is an operational state diagram showing a movable contactor, a first fixed contactor and a second fixed contactor in a ground state in a ground opening / closing mechanism of a switchgear according to an embodiment of the present invention;
5 is a plan view illustrating a configuration of a first fixed contactor and a movable contact in a ground opening / closing mechanism of a switchgear according to an exemplary embodiment of the present invention.

The object of the present invention and the constitution and effects of the present invention to achieve the same will be more clearly understood by the following description of the preferred embodiment of the present invention with reference to the accompanying drawings.

1 is a cross-sectional view showing the configuration of the ground opening and closing mechanism of the switch gear according to the embodiment of the present invention, Figure 2 is a movable contact and the first contact when the input state in the ground opening and closing mechanism of the switch gear according to the embodiment of the present invention 3 is a view illustrating an operation state showing a fixed contactor and a second fixed contactor, and FIG. 3 illustrates a movable contactor and a first fixed contactor and a second fixed contactor when the switch contact is in a ground (neutral) state according to an embodiment of the present invention. 4 is an operational state diagram showing a contactor, and FIG. 4 is an operational state diagram showing a movable contactor, a first fixed contactor, and a second fixed contactor in a ground state in the ground opening / closing mechanism of the switchgear according to the embodiment of the present invention. Is a plan view showing the configuration of the first fixed contactor and the movable contact in the ground opening and closing mechanism of the switchgear according to the embodiment of the present invention.

As can be seen in particular with reference to Figure 1, the ground opening and closing mechanism of the switchgear according to the embodiment of the present invention, the ground opening and closing mechanism of the switchgear according to the embodiment of the present invention is a first fixed contactor (1) And a second stationary contactor 2 and a mover assembly 3. The ground opening and closing mechanism of the switchgear according to the embodiment of the present invention is preferably provided with three corresponding to three phases of three-phase alternating current.

The first fixed contactor 1 is a closing contactor for closing which is electrically connected to the power supply or load side of the power circuit. The first fixed contactor 1 is a connecting blade 1b which is in electrical and mechanical contact with the mover assembly 3, and a connecting conductor 1a which is electrically connected to the power supply or load side of the power circuit. It is configured to include.

The second stationary contactor 2 is a ground stationary contactor. In other words, the second fixed contactor 2 is connected to the ground, i.e., grounded, via the electrical conductor. The second stationary contactor 2 comprises a connection blade 2a in electrical and mechanical contact with the mover assembly 3 and a connection conductor 2b in electrical connection with the earth. Referring to FIG. 1, according to a preferred embodiment, the connecting blade 2a of the second fixed contactor 2 is rotated about 120 degrees counterclockwise from the connecting blade 1b of the first fixed contactor 1. Located.

The mover assembly 3 is electrically connected to the power supply or load side of the power circuit. In other words, when the first fixed contactor 1 is connected to the power supply side of the power circuit, the mover assembly 3 is connected to the load side, and the first fixed contactor 1 is connected to the load side of the power circuit. The child assembly 3 is connected to the power supply side. The mover assembly 3 has a first position contacting the first stationary contactor 1 for circuit input, a second position contacting the second stationary contactor 2 for grounding, and for disconnecting. It is rotatable to a third position for a neutral position (disconnected position) that is separated from the first fixed contact and the second fixed contact.

For the rotation of the mover assembly 3, the mover assembly 3 comprises a rotation drive shaft 3a. The rotary drive shaft 3a is connected to a drive source such as an electric motor, not shown.

The mover assembly 3 further includes a rotary lever LEVER 3b and a movable contactor 3c.

The rotary lever LEVER 3b is a lever member which is driven by the rotary drive shaft 3a and rotates.

The movable contactor 3c is connected to the rotary lever 3b, rotates with the rotary lever 3b, and connects the connecting blades 1b and 2a of the first fixed contactor 1 and the second fixed contactor 2 to each other. It has a pair of opposing plates fitted in contact therewith. In more detail, as can be seen in FIG. 5, the movable contactor 3c includes at least one elastically sandwiching connecting blades 1b and 2a of the first fixed contactor 1 and the second fixed contactor 2. It consists of a pair of opposing contact plate 3c-1 and the contact protrusion 3c-2 fixed to the edge part of each contact plate 3c-1. The contact plate 3c-1 and the contact protrusion 3c-2 are, of course, made of a conductor. The contact protrusions 3c-2 may be formed by installing a rivet-shaped conductor bar through a through hole, not shown, formed at the end of the contact plate 3c-1, and then caulking both ends thereof. .

In Fig. 1, reference numerals 4 and 4 'are insulated spacers which are made of an electrical insulating material and support the conductors 5a and 5b penetrating therein to be electrically insulated from the outside, and the conductors 5a and 5b respectively. As a conductor for electrically connecting the first fixed contactor 1 and the mover assembly 3 to the outside, they are electrically and mechanically connected to the connecting conductor 1a or the mover assembly 3, respectively. In addition, the conductors 5a and 5b may be made of a conductive metal plate such as copper, for example, called a busbar, and may be composed of three corresponding to alternating three phases. In FIG. 1, reference numeral 10 denotes an enclosure for accommodating the ground opening / closing mechanism of the switchgear according to an embodiment of the present invention, also called a tank, and an insulation gas may be enclosed in the enclosure 10, for example.

In FIG. 5, only a plan view of the connecting blade 1b of the first fixed contactor 1 is shown, but as a representative example, the connecting blade 2a of the second fixed contactor 2 may be configured in the same manner. It will be omitted.

Meanwhile, the operation of the ground opening / closing mechanism of the switchgear according to the preferred embodiment of the present invention configured as described above will be described with reference to FIGS. 2 to 4 and with reference to FIGS. 1 and 5 as follows.

First, the operation of the ground opening and closing mechanism of the switchgear according to the preferred embodiment of the present invention will be described from the blocking (neutral) position shown in FIG. 3 to the closing position shown in FIG.

In the blocking (neutral) position shown in Fig. 3, when the rotary drive shaft 3a is rotated by a predetermined angle (for example, 120 degrees) in the clockwise direction by power from a driving source (not shown), it is stored on the rotary drive shaft 3a. The rotation lever 3b also rotates clockwise by the rotation angle of the rotation drive shaft 3a. Then, in the movable contactor 3c, the first contact between the pair of contact protrusions 3c-2 and the pair of contact plates 3c-1, which are provided to face each other as shown in FIG. The connecting blade 1b of the fixed contactor 1 is fitted and brought into contact as shown in Fig. 2. Thus, the mover assembly 3 and the first fixed contactor 1 are electrically connected to each other, so that the power supply side of the power circuit is connected. From the load side to the electrically connected (that is, closed loop or input) state, the power from the power source can be supplied to the load side.

Next, the operation of the ground opening / closing mechanism of the switchgear according to the preferred embodiment of the present invention from the closing position shown in FIG. 2 to the blocking (neutral) position shown in FIG.

In the blocking (neutral) position shown in FIG. 3, when the rotary drive shaft 3a is rotated by a predetermined angle (for example, 75 degrees) counterclockwise by power from a driving source (not shown), the number of axes on the rotary drive shaft 3a is reduced. The rotated lever 3b thus rotates counterclockwise by the rotational angle of the rotational drive shaft 3a. Then, the movable contactor 3c does not come into contact with any of the connecting blade 1b of the first fixed contactor 1 and the connecting blade 2a of the second fixed contactor 2, as shown in FIG. It is located at the position (neutral position). Thus, the mover assembly 3, the first fixed contactor 1 and the second fixed contactor 2 are electrically disconnected from each other, so that the load side is electrically disconnected (that is, open circuit or disconnected) from the power supply side of the power circuit. The supply of electric power to the load side from the power supply is cut off.

Next, the operation of the ground opening and closing mechanism of the switchgear according to the preferred embodiment of the present invention from the disconnecting position shown in FIG. 3 to the grounding position shown in FIG.

In the disconnection (neutral) position shown in FIG. 3, when the rotation drive shaft 3a is rotated by a predetermined angle (for example, 45 degrees) counterclockwise by power from a drive source (not shown), the number of axes on the rotation drive shaft 3a is reduced. The rotated lever 3b thus rotates counterclockwise by the rotational angle of the rotational drive shaft 3a. Then, in the movable contactor 3c, as shown in Fig. 5, the second contact between the pair of contact protrusions 3c-2 and the pair of contact plates 3c-1, which are provided to face each other and are provided at the end, respectively. The connecting blades 2a of the fixed contactor 1 are fitted and contacted as shown in Fig. 4. Thus, the mover assembly 3 and the second fixed contactor 2 are electrically connected to each other, and thus the load side of the power circuit. When the ground and the ground are electrically connected (that is, grounded), the current remaining on the load side can be discharged to the ground and the load side can be grounded.

As described above, the ground opening / closing mechanism of the switchgear according to the present invention includes one movable contactor 3c, that is, the movable assembly 3 has a first fixed contactor 1 for input and a second fixed contactor 2 for grounding. Since the configuration can be commonly connected to), it is possible to reduce the volume of the enclosure 10 for receiving the ground opening and closing mechanism, the configuration is simplified, the manufacturing productivity is improved compared to the conventional, manufacturing cost is reduced, and defects during manufacturing In addition, there is an effect to obtain the ground opening and closing mechanism of the switchgear that can be minimized compared to the prior art.

In the ground opening / closing mechanism of the switchgear according to the present invention, since the first fixed contactor 1 and the second fixed contactor 2 each comprise connecting blades 1b and 2a, the movable contactor ( 3c) can obtain the effect that the operation of contacting or separating by interposing the connection blade 1b or 2a can be easily performed.

In the ground opening / closing mechanism of the switchgear according to the present invention, the mover assembly 3 includes a rotary drive shaft 3a and a rotary lever 3b and a rotary lever 3b which are rotated and rotated by the rotary drive shaft 3a. A movable contactor having a pair of opposing plates connected and rotating together with the rotary lever 3b and sandwiching the contact blades 1b or 2a of the first fixed contactor 1 and the second fixed contactor 2 in contact therewith. Since it comprises 3c, it is possible for the movable contactor 3c to be contacted or separated while rotating in common with the first and second fixed contactors 1 and 2, and the first and second fixed contactors 1 and 2, respectively. The contact blades 1b or 2a of () can be sandwiched and brought into contact with each other.

In the ground opening / closing mechanism of the switchgear according to the present invention, the movable contactor 3c is provided with at least elastically sandwiching the connecting blades 1b or 2a of the first fixed contactor and the second fixed contactor 1, 2. Since it comprises a pair of opposing contact plates 3c-1 and contact protrusions 3c-2 fixedly installed at the ends of each contact plate 3c-1, the first fixed contactor 1 and the second fixed contact The connection blade 1b or 2a of the contactor 2 can be elastically fitted between the pair of contact plates 3c-1 of the movable contactor 3c, so that the contact force can be maintained firmly.

1: first fixed contact 1a: connecting conductor
1b: connection blade 2: second fixed contact
2a: connection blade 2b: connecting conductor
3: mover assembly 3a: rotary drive shaft
3b: rotary lever 3c: movable contactor
3c-1: contact plate 3c-2: contact protrusion
4, 4 ': insulation spacer 5a, 5b: conductor
10: enclosure

Claims (4)

In the ground opening and closing mechanism of the switchgear,
A first fixed contactor for closing connected electrically to the power supply or load side of the power circuit;
A second fixed contactor for grounding; And
A first position electrically connected to the power supply or load side of the power circuit, the first position contacting the first fixed contactor for circuit input, the second position contacting the second fixed contactor for grounding, and a disconnection A mover assembly rotatable to a third position, the neutral position being separate from the first fixed contact and the second fixed contact for
The first fixed contact and the second fixed contact each includes a connecting blade (CONNECTING BLADE),
The mover assembly,
Rotary drive shaft;
A rotation lever (LEVER) rotated by the rotation drive shaft; And
A movable contactor which is connected to the rotary lever, rotates together with the rotary lever, and has a pair of opposing plates such that the connecting blades of the first fixed contactor and the second fixed contactor are sandwiched between and in contact with each other.
The movable contact,
At least one pair of opposing contact plates which elastically sandwich the connecting blades of the first fixed contactor and the second fixed contactor; And
And a contact protrusion fixed to an end of each contactor plate. delete delete delete
KR1020100081669A 2010-08-23 2010-08-23 Switching mechanism for switchgear KR101100711B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100081669A KR101100711B1 (en) 2010-08-23 2010-08-23 Switching mechanism for switchgear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100081669A KR101100711B1 (en) 2010-08-23 2010-08-23 Switching mechanism for switchgear

Publications (1)

Publication Number Publication Date
KR101100711B1 true KR101100711B1 (en) 2011-12-30

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102042155B1 (en) 2019-02-07 2019-11-07 주식회사 에스에이치솔텍 The earthing switch module of eco-friendly gas insulated load break switch
CN112242266A (en) * 2019-07-19 2021-01-19 武汉倍诺德开关有限公司 Contact system of three-station isolating switch
JP7512714B2 (en) 2020-07-02 2024-07-09 富士電機株式会社 Earthing switch
WO2024188348A1 (en) * 2023-03-16 2024-09-19 Siemens Electrical Apparatus Ltd. Dual power automatic transfer switch and contact system thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004063110A (en) * 2002-07-25 2004-02-26 Hitachi Ltd Switching device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004063110A (en) * 2002-07-25 2004-02-26 Hitachi Ltd Switching device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102042155B1 (en) 2019-02-07 2019-11-07 주식회사 에스에이치솔텍 The earthing switch module of eco-friendly gas insulated load break switch
CN112242266A (en) * 2019-07-19 2021-01-19 武汉倍诺德开关有限公司 Contact system of three-station isolating switch
JP7512714B2 (en) 2020-07-02 2024-07-09 富士電機株式会社 Earthing switch
WO2024188348A1 (en) * 2023-03-16 2024-09-19 Siemens Electrical Apparatus Ltd. Dual power automatic transfer switch and contact system thereof

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