KR101831850B1 - 25.8KV bypass built-in variable load break switch - Google Patents

25.8KV bypass built-in variable load break switch Download PDF

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Publication number
KR101831850B1
KR101831850B1 KR1020150142151A KR20150142151A KR101831850B1 KR 101831850 B1 KR101831850 B1 KR 101831850B1 KR 1020150142151 A KR1020150142151 A KR 1020150142151A KR 20150142151 A KR20150142151 A KR 20150142151A KR 101831850 B1 KR101831850 B1 KR 101831850B1
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KR
South Korea
Prior art keywords
terminal
movable
pin terminal
fixed
lead
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KR1020150142151A
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Korean (ko)
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KR20170042928A (en
Inventor
황월상
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엔일렉트릭 주식회사
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Priority to KR1020150142151A priority Critical patent/KR101831850B1/en
Publication of KR20170042928A publication Critical patent/KR20170042928A/en
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    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • 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
    • 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
    • H01H33/46—Interlocking mechanisms
    • 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
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices

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  • Gas-Insulated Switchgears (AREA)

Abstract

25.8 KV bypass variable internal load switch is disclosed.
A main circuit portion 140 having a driving portion interlocked with the operating levers 111 and 112 partially exposed to the outside, a connecting portion between the lead line 121 and the fixed pin terminal 122 integrally embedded, A plurality of withdrawing bushing members 120 provided at the switchgear housing 110 such that one end of the terminal 122 is exposed to the switch housing 110 and a connection portion between the outgoing line 131 and the movable side terminal pin 132 are integrally formed A plurality of outgoing bushing members 130 mounted on the switchgear 110 such that one end of the movable side pin terminal 132 faces the fixed side pin terminal 122 and is exposed to the switchgear housing 110, And a movable contact portion 141 which is coupled to one end of the terminal 132 and horizontally moves in conjunction with the operation lever 111 to electrically connect the fixed pin terminal 122 and the movable pin terminal 132 And is electrically connected to one end of the main circuit unit 140 and the movable side pin terminal 132 to be interlocked with the operation lever 112 And a detour circuit portion 150 having a movable contact portion 151 that horizontally moves to electrically connect the fixed pin terminal 122 and the movable pin terminal 132. Thus, It is possible to constitute a bypass circuit having a bypass function and to control the power supply between the power supply and the load manually or remotely and to prevent a safety accident due to erroneous operation of the main circuit and the bypass circuit.

Description

25.8KV bypass built-in variable load break switch

The present invention relates to a solid insulated and gas insulated load break switch, and more particularly, to a circuit breaker having a main circuit for interrupting power between a power source and a load, a bypass circuit having a bypass function, To a variable built-in load break switch.

Generally, electricity generated by the power plant at a voltage of about 20,000V is boosted to ultra high voltage suitable for transmission and transmitted to the primary substation. In the primary substation, the supplied power is lowered to 22.9 kV and supplied to the secondary substation or each customer. The electric power supplied from the primary substation is supplied to the receiving facilities of each customer through the distribution system consisting of the processing distribution line and the underground distribution line, and is supplied to the low pressure customer through the special high pressure customer, the high pressure customer and various outdoor installation transformers. At this time, a load break switch is used for line division, branching, and protection of the primary side of the transformer in the high voltage customer's switchboard.

In other words, the load switch distributes power to the devices used in urban and residential complexes. In the event of a surge or an accident occurring in the power system, the fault section is separated by quick opening and closing for safety after operation of the circuit breaker, It is a device used to shorten the power outage time by supplying power to the section. Among these load breakers, the load break switch for processing is mainly installed on the electric pole, and has no ground contact portion.

These load switches can be roughly divided into gas insulated load switches and solid insulated load switches. Conventionally, a gas insulated load switch for inserting and extinguishing a gas such as SF 6 has been widely used. However, due to the trend of preventing global warming, a solid insulated load switch using an epoxy or the like is widely used .

In the "gas insulated load switch" of the already filed and registered patent document 1, the assembling member in the housing is driven by the manually operated drive unit to supply and block the power supplied to the load. In the "insulation structure of a work load switch" in Patent Document 2, the movable rod is moved up and down to electrically connect and disconnect terminals, that is, the fixed electrode and the movable electrode, to supply and cut off power supplied to the load.

However, the above-described prior arts have a limitation in that the power supplied to the load can be interrupted only by one circuit.

Korean Registered Patent No. 10-1108470 (Registered on Jan. 31, 2012) Korean Registered Patent No. 10-1513212 (Registered on Apr. 17, 2015)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the conventional problems as described above, and it is an object of the present invention to provide a bypass circuit having bypass function together with a main circuit between a power source and a load, Bypass variable internal load switch.

It is also an object of the present invention to provide a 25.8 KV bypass variable built-in load switch which can control a main circuit and a bypass circuit connected in parallel between a power supply and a load, both manually and remotely.

It is another object of the present invention to provide a 25.8 KV bypass variable load switch that can prevent a safety accident due to a misoperation of a main circuit and a bypass circuit.

The above object of the present invention can be achieved by providing a switch comprising: at least two actuators connected to actuating levers partially exposed to the outside; A plurality of inlet bushing members installed in the switchgear so that connection portions of the inlet line and the fixed side pin terminals connected thereto are integrally embedded and one end of the fixed side terminal is exposed to the switchgear; A plurality of lead-out bushing members installed in the switchgear so that one end of the movable-side pin terminal faces the fixed-side pin terminal and the other end of the movable-side pin terminal is exposed to the switchgear; A main circuit unit coupled to one end of the movable-side pin terminal and horizontally moving in conjunction with the operation lever to electrically connect the fixed-side pin terminal and the movable-side pin terminal; And a movable contact portion electrically connected to one end of the movable-side pin terminal and moving in association with the operation lever to electrically connect the fixed-side pin terminal and the movable-side pin terminal. The KV bypass is accomplished by a variable built-in load switch.

Further, in the present invention, the main circuit section and the bypass circuit section are characterized in that an interlock function is set in the contact operation.

Further, in the present invention, it is preferable that a fixed side support in which a bypass terminal fixing pin terminal is integrally formed is provided in the switch case, and the bypass circuit fixing pin terminal is electrically connected to the fixed side pin terminal Is connected.

Further, in the present invention, a movable-side support in which a bypass circuit moving-side pin terminal is integrally formed is provided in the switch housing, and the bypass circuit moving-side pin terminal is electrically connected to the movable- Is connected.

In the present invention, the load switch may be a gas insulated load switch.

Another object of the present invention is to provide a switch comprising: at least two actuators for lifting and lowering a plurality of movable rods vertically arranged in association with operating levers partially exposed to the outside; A plurality of inlet terminals, both ends of which are exposed to the outside and upper portions of the inner space, and a plurality of outlet terminals, both ends of which are exposed to the sides of the inner space, are integrally fixed A plurality of epoxy mold housings in which an upper portion of the main circuit unit 140 is fixed; A movable electrode electrically connected to the lead-out terminal, and a movable electrode electrically connected to the lead-out terminal, wherein the movable electrode is interlocked with the movable rod to electrically connect the lead-in terminal and the lead- ; And a movable electrode electrically connected to the lead-out terminal, wherein the movable electrode is interlocked with the movable rod to electrically connect the lead-in terminal and the lead-out terminal, And a circuit portion, wherein the 25.8KV bypass variable built-in load break switch is implemented.

Further, in the present invention, a current meter for measuring an outgoing current is provided in the periphery of the drawing terminal buried in the epoxy mold housing.

Further, in the present invention, a voltage measuring device for measuring a lead-in voltage is provided in the lead-in terminal.

Further, in the present invention, a voltage measuring device for measuring an output voltage is provided in the drawing terminal.

According to the present invention, a connection portion of the fixed electrode, the movable electrode, and the movable rod is located in the contact housing portion, and a shield for reducing an electric field is provided at a lower end portion of the contact housing portion.

Further, in the present invention, the contact housing part is characterized in that the internal space is maintained in a vacuum state.

Further, in the present invention, the main circuit section and the bypass circuit section are characterized in that an interlock function is set in the contact operation.

Further, in the present invention, the driving unit in the main circuit unit 140 is manually or remotely operated by the operation lever.

In the present invention, the load switch may be a solid insulated load switch.

According to the present invention, by providing a bypass circuit having a bypass function in parallel with a main circuit having a switching function capable of interrupting the power supply between the power supply and the load, the effect of selectively interrupting the power supplied to the load have.

Further, according to the present invention, the main circuit and the bypass circuit, which are connected in parallel between the power source and the load, can be manually operated by the operation lever or remotely operated from a remote place, so that the power supplied to the load can be manually controlled on- There is an effect that can be controlled.

Further, according to the present invention, by setting the interlock function in the contact operation between the main circuit portion and the bypass circuit portion, there is an effect that a safety accident caused by erroneous operation of the main circuit or the bypass circuit can be prevented in advance.

1 is a perspective view of a gas insulated load switch according to a first embodiment of the present invention.
2 to 5 are sectional views (BB) showing an operating state of the gas insulated load switch according to the first embodiment of the present invention.
6 is a perspective view of a solid insulated load switch according to a second embodiment of the present invention.
7 to 10 are cross-sectional views (AA) showing the operating state of the solid insulated load switch according to the second embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a gas insulated load switch according to a first embodiment of the present invention, and FIGS. 2 to 5 are sectional views showing an operating state of a gas insulated load switch according to the first embodiment of the present invention.

1 to 5, the gas insulated load switch according to the first embodiment of the present invention includes a switch 110 filled with a gas for insulation, a switch circuit for fixing the lead line 121 connected to the power supply, A lead bushing member 130 for fixing an outgoing line 131 connected to a load, a main circuit unit 140 for interrupting power supplied to the load, and a main circuit unit 140 connected in parallel with the main circuit unit 140. [ And a bypass circuit unit 150 for connecting and disconnecting the power supplied to the load.

The switch 110 constituting the gas insulated load switch according to the first embodiment of the present invention is provided with at least two drivers for switching operations of the main circuit 140 and the bypass circuit 150, Two actuating levers 111 and 112 for actuating the respective actuating parts are provided so that a part thereof is exposed to the outside. The above driving unit can be operated in conjunction with the operation of the operating levers 111 and 112 as described above or can be operated from a remote place by a remote control device not shown.

The lead-in bushing member 120 is a three-bushing member into which three-phase power is supplied. The three lead-in lines 121 and the three fixed-side pin terminals 122 connected to the three- And three fixed pin terminals 122 are installed in the switch 110 so that one end thereof is exposed into the switch housing 110.

The outgoing bushing member 130 corresponding to the inlet bushing member 120 is a three-bushing member from which power of three phases is drawn out and is connected to three outgoing line 131 and three connection-side pin terminals 132 And three movable pin terminals 132 are installed in the switch 110 so that one end of the three movable pin terminals 132 faces the three fixed pin terminals 122 and is exposed to the switch housing 110. [

The main circuit unit 140 for interrupting the power supplied to the load is connected to one end of the movable side terminal 132 and moves horizontally to interlock with the operation lever 111 to connect the fixed side terminal 122 and the movable side terminal 132 which are electrically connected to each other.

The bypass circuit unit 150 connected in parallel to the main circuit unit 140 is electrically connected to one end of the movable pin terminal 132 and interlocked with the driving unit interlocked with the operation lever 112 to connect the fixed pin terminal 122 And a movable contact portion 151 for electrically connecting the movable-side pin terminal 132 to each other.

In the above configuration, the interlock function is set in the contact operation between the main circuit unit 140 and the bypass circuit unit 150 that intermittently supply power to the load, thereby preventing a safety accident due to erroneous operation of the main circuit or the bypass circuit .

In order to connect the fixed side of the bypass circuit part 150, the bypass circuit fixing pin terminal 153 is formed integrally with the fixed side support 152 and provided in the switch housing 110, The pin terminal 153 is electrically connected to the fixed-side pin terminal 122 by the fixed-side booster 154.

To connect the movable side of the bypass circuit part 150, the bypass circuit moving side pin terminal 155 is formed integrally with the movable side support 156 and provided in the switch housing 100, The pin terminal 155 is electrically connected to the movable side pin terminal 132 by the movable side booster 157.

2 to 5 show an open / closed state of the gas insulated load switch according to the first embodiment of the present invention. FIG. 2 shows a state where both the main circuit unit 140 and the bypass circuit unit 150 are switched to 'open' 3 shows a state where the main circuit unit 140 is closed and the bypass circuit unit 150 is switched to open and FIG. 4 shows a state where the main circuit unit 140 is open and the bypass circuit unit 150 is open 5 shows a state where both the main circuit unit 140 and the bypass circuit unit 150 are switched to " close ".

FIG. 6 is a perspective view of a solid insulated load switch according to a second embodiment of the present invention, and FIGS. 7 to 10 are sectional views showing an operating state of a solid insulated load switch according to a second embodiment of the present invention.

The solid insulated load switch according to the second embodiment of the present invention includes a switch 210, an epoxy mold housing 220 for fixing three lead-in cables 221 and lead-out cables 222, A main circuit unit 230 for interrupting the power supply, and a bypass circuit unit 240 connected in parallel with the main circuit unit 230 to intermittently supply power to the load.

The main circuit unit 210 constituting the solid insulated load switch according to the second embodiment of the present invention includes a plurality of actuators (not shown) interlocked with two operation levers 211 and 212, Two or more drivers for raising and lowering the rods 213 and 214 are provided.

The three epoxy mold housings 220 are three epoxy mold housings into which three-phase power is supplied. The three epoxy mold housings 220 include a plurality of inlet terminals 221 formed with an opened lower space and both ends exposed to the outside and the upper portion of the inner space, And a plurality of outgoing terminals 222, both ends of which are exposed to the outside of the inner space, are integrally fixed and fixed to the upper part of the main circuit part 210.

The main circuit unit 230 for interrupting the power supplied to the load is provided with a fixed electrode 231 electrically connected to the lead-in terminal 221 and a movable electrode 232 electrically connected to the lead-out terminal 222, The movable electrode 232 is interlocked with the movable rod 213 to electrically connect the lead-in terminal 221 and the lead-out terminal 222.

The bypass circuit unit 240 connected in parallel to the main circuit unit 230 includes a fixed electrode 241 electrically connected to the lead-in terminal 221, a movable electrode 242 electrically connected to the lead- And the movable electrode 242 is interlocked with the movable rod 214 to electrically connect the lead-in terminal 221 and the lead-out terminal 222.

The current drawn from the drawing terminal 222 can be measured by providing a current meter 251 around the drawing terminal 222 embedded in the epoxy mold housing 220 to measure the drawing current.

The voltage measuring devices 252 and 253 for measuring the incoming or outgoing voltages of the incoming terminal 221 and the outgoing terminal 222 are provided so that the incoming or outgoing voltages of the incoming terminal 221 and the incoming terminal 222 are Can be measured.

The contact portions of the fixed electrodes 231 and 241 with the movable electrodes 232 and 242 and the movable rods 213 and 214 are located within the contact housing portion 254, A shield 255 for electric field relaxation is provided at regular intervals.

Further, it is preferable that the contact housing part 254 is kept in a vacuum state in the internal space.

Also, since the interlock function of the contact operation of the main circuit unit 230 and the bypass circuit unit 240 is set, it is possible to prevent a safety accident due to erroneous operation of the main circuit or the bypass circuit.

The driver in the main circuit unit 210 is manually or remotely operated by the operating levers 211 and 212 so that a safety accident caused by erroneous operation of the main circuit or the bypass circuit can be prevented in advance.

7 to 10 show the open / closed state of the solid insulated load switch according to the second embodiment of the present invention. FIG. 7 shows a state where both the main circuit unit 230 and the bypass circuit unit 240 are switched to 'close' 8 shows a state where the main circuit unit 230 is closed and the bypass circuit unit 240 is switched to open. FIG. 9 shows a state where the main circuit unit 230 is open and the bypass circuit unit 240 is open 10 shows a state where both the main circuit unit 230 and the bypass circuit unit 240 are switched to 'open'.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, the spirit of the present invention should be understood only in accordance with the following claims, and all equivalents or equivalent variations thereof are included in the scope of the present invention.

110: Actuator box 111, 112, 211, 212: Operation lever
120: inlet bushing member 121: inlet line
122: fixed-side pin terminal 130: lead-out bushing member
131: lead line 132: movable side pin terminal
140, 230: main circuit portion 141: movable contact portion
150, 240: bypass circuit part 151: movable contact part
152: Fixed side support 153: Bypass circuit Fixed side pin terminal
154: fixed side booster 155: bypass circuit movable side pin terminal
156: movable side support 157: movable side booster
210: Actuator box 213, 214:
220: Epoxy mold housing 221: Inlet terminal
222: lead-out terminal 231, 241: fixed electrode
232, 242: movable electrode 251: current meter
252, 253: voltage meter 254: contact housing part
255: Shield

Claims (14)

A switch 110 having two or more actuating parts interlocked with actuating levers 111 and 112 partially exposed to the outside;
The connecting portion of the inlet line 121 and the fixed side pin terminal 122 connected thereto is integrally embedded and the one end of the fixed side pin terminal 122 is exposed to the inside of the switchgear box 110 A plurality of inlet bushing members 120 installed;
A connecting portion of the outgoing line 131 and the movable side pin terminal 132 connected thereto is integrally embedded and one end of the movable side pin terminal 132 faces the fixed side pin terminal 122, A plurality of outgoing bushing members 130 installed in the switchgear housing 110 so as to be exposed to the inside of the switchgear housing 110;
Side pin terminal 132 and electrically connects the fixed-side pin terminal 122 and the movable-side pin terminal 132 to each other by moving in conjunction with the operation lever 111, A main circuit part 140 having a part 141; And
A movable contact pin 152 electrically connected to one end of the movable pin terminal 155 to horizontally move in conjunction with the operation lever 112 to electrically connect the fixed pin terminal 153 and the movable pin terminal 155, A bypass circuit part 150 having a part 151;
25.8 KV bypass variable internal load switch.
The method according to claim 1,
Wherein the main circuit unit (140) and the bypass circuit unit (150) have an interlock function in a contact operation.
The method according to claim 1,
A fixed side support 152 formed integrally with a bypass circuit fixing pin terminal 153 is provided in the switch housing 110 and the bypass circuit fixing pin terminal 153 is fixed by a fixed side booster 154 Side pin terminal (122), and is electrically connected to the fixed-side pin terminal (122).
The method according to claim 1,
The movable side support pin 156 having the bypass circuit movable pin terminal 155 integrally molded therein is provided in the switch housing 110 and the bypass circuit movable side pin terminal 155 is connected to the movable side booster 157 by the movable side booster 157 Side pin terminal 132. The 25.8 KV bypass variable built-in load breaker is electrically connected to the movable-side pin terminal 132. [
The method according to claim 1,
Wherein the load switch is a gas insulated load switch, the 25.8KV bypass variable load switch.
A switch 210 having two or more actuators for lifting and lowering a plurality of movable rods 213 and 214 vertically arranged in association with operating levers 211 and 212, which are partially exposed to the outside;
A plurality of lead-in terminals 221 having both ends opened to the outside and an upper portion of the inner space, and a plurality of lead-out terminals 222 having both ends exposed to the outside and the side of the inner space, A plurality of epoxy mold housings 220 fixed integrally with the main circuit part 230 to fix the upper part of the main circuit part 230;
The fixed electrode 231 is electrically connected to the lead-in terminal 221 and the movable electrode 232 is electrically connected to the lead terminal 222. The movable electrode 232 is connected to the movable rod 213, A main circuit unit 230 interlocked with the lead-out terminal 221 to electrically connect the lead-in terminal 221 and the lead-out terminal 222; And
The fixed electrode 241 electrically connected to the lead-in terminal 221 and the movable electrode 242 electrically connected to the lead terminal 222 are provided so that the movable electrode 242 contacts the movable rod 214, A bypass circuit unit 240 interlocked with the input terminal 221 and the extraction terminal 222 to electrically connect the input terminal 221 and the extraction terminal 222;
25.8KV bypass variable internal load switch, consisting of.
The method according to claim 6,
And a current measuring device (251) for measuring an output current is installed in the periphery of the drawing terminal (222) buried in the epoxy mold housing (220).
The method according to claim 6,
And a voltage measuring device (252) for measuring a lead-in voltage is installed in the lead-in terminal (221).
The method according to claim 6,
And a voltage meter (253) for measuring an output voltage is installed in the output terminal (222).
The method according to claim 6,
The connecting portions of the fixed electrodes 231 and 241 and the movable electrodes 232 and 242 and the movable rods 213 and 214 are located in the contact housing portion 254 and the lower end portions of the contact housing portion 254 And a shield (255) for electric field relaxation is installed at a predetermined interval from the shielding plate (25).
11. The method of claim 10,
Wherein the contact housing part (254) is maintained in a vacuum state in the internal space.
The method according to claim 6,
Wherein the main circuit unit (230) and the bypass circuit unit (240) have an interlock function in contact operation.
The method according to claim 6,
Wherein the driving unit in the main circuit unit (230) is manually or remotely operated by the operating levers (211) and (212).
The method according to claim 6,
Wherein the load switch is a solid insulation load switch. ≪ RTI ID = 0.0 > 25. < / RTI >
KR1020150142151A 2015-10-12 2015-10-12 25.8KV bypass built-in variable load break switch KR101831850B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150142151A KR101831850B1 (en) 2015-10-12 2015-10-12 25.8KV bypass built-in variable load break switch

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KR20170042928A KR20170042928A (en) 2017-04-20
KR101831850B1 true KR101831850B1 (en) 2018-04-04

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101323310B1 (en) * 2012-08-23 2013-10-29 한국전기연구원 Solid insulated switchgear of grid connection type

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101323310B1 (en) * 2012-08-23 2013-10-29 한국전기연구원 Solid insulated switchgear of grid connection type

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