CN112509846B - Electric grounding control device of switch cabinet harmonic eliminator - Google Patents
Electric grounding control device of switch cabinet harmonic eliminator Download PDFInfo
- Publication number
- CN112509846B CN112509846B CN202011122626.1A CN202011122626A CN112509846B CN 112509846 B CN112509846 B CN 112509846B CN 202011122626 A CN202011122626 A CN 202011122626A CN 112509846 B CN112509846 B CN 112509846B
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- CN
- China
- Prior art keywords
- screw rod
- static contact
- moving contact
- proximity switch
- cylinder body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
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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
- H01H31/026—Movable parts and contacts mounted thereon
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The invention discloses an electric grounding control device of a harmonic eliminator of a switch cabinet, which comprises a static contact, a movable contact, a knife switch seat, a driver and a controller, wherein one end of the static contact and one end of the movable contact are respectively and electrically connected with an upper wiring pile head and a lower wiring pile head of the harmonic eliminator, the driver is electrically connected with the controller, the driver drives the movable contact to vertically move up and down along the knife switch seat so as to be switched on or switched off with the static contact, and one end of the static contact and one end of the movable contact are respectively and electrically connected with the upper wiring pile head and the lower wiring pile head of the harmonic eliminator.
Description
[ technical field ] A
The invention relates to the technical field of harmonic elimination devices, in particular to the technical field of an electric grounding control device of a harmonic elimination device of a switch cabinet.
[ background ] A method for producing a semiconductor device
The indirect test method is widely applied to the field test of capacitance current, and the test principle is that a signal source is additionally arranged from a secondary opening triangle of a bus voltage transformer or the secondary side of an arc suppression coil, a signal with specific frequency is injected into a system, and a feedback signal is analyzed so as to calculate the capacitance current value.
During actual measurement, the voltage transformer is powered off, the resonance eliminator is short-circuited at the voltage transformer handcart or a rear lower door, and then the voltage transformer is powered on. The transportation direction of the power grid needs to be changed during the pressure change of the power grid. After the measurement is finished, the power is cut off, the short-circuit wire is dismantled, the power is supplied again, and the operation mode is changed. The whole measuring mode has complicated programs, the voltage-variable resonance eliminator needs to be short-circuited in order to match with capacitance current measurement, 2 tickets, 1 ticket and about 20 operation tickets can be generated on one section of bus, and related operation parties need to wait for dispatching and issuing orders when changing. Most of the time is usually spent on waiting for scheduling commands, opening work tickets, switching operation and preparing safety measures, and the work efficiency is very low.
[ summary of the invention ]
The invention aims to solve the problems in the prior art, and provides an electric grounding control device for a resonance eliminator of a switch cabinet, which can realize quick short circuit of the resonance eliminator, does not need power failure in the whole operation process, does not need to dismantle short-circuit wires and the like, greatly improves the working efficiency, and reduces the working safety risk.
In order to achieve the purpose, the invention provides an electric grounding control device of a harmonic eliminator of a switch cabinet, which comprises a static contact, a moving contact, a knife switch seat, a driver and a controller, wherein one end of the static contact and one end of the moving contact are respectively and electrically connected with an upper wiring pile head and a lower wiring pile head of the harmonic eliminator, the driver is electrically connected with the controller, and the driver drives the moving contact to vertically move up and down along the knife switch seat so as to be switched on or switched off with the static contact.
Preferably, the disconnecting link base comprises a lower base body and an upper barrel body, the driver comprises a motor, a transmission belt, a screw rod, a screw nut and an upright post, the motor and the upper barrel body are respectively fixed on the left side and the right side of the top surface of the lower base body, the screw rod is vertically and rotatably connected in the upper barrel body, the lower end of an output shaft of the motor and the lower end of the screw rod respectively extend into an inner cavity of the lower base body, the output shaft of the motor drives the screw rod to rotate through the transmission belt, the screw nut is fixed on the screw rod in a threaded manner and is connected with the side wall of the lower end of the upright post, the upright post is parallel to the screw rod, the top end of the upright post extends out of the upper barrel body, and the moving contact is fixed on the upright post and is positioned under the static contact.
Preferably, a cross bar is arranged on the side wall of the top end of the upright post, and the moving contact is fixed on the cross bar.
Preferably, the upper limiting bolt is arranged on the left side of the moving contact through the upper supporting plate and vertically moves up and down along with the moving contact, when the static contact and the moving contact are switched on in place, the upper limiting bolt is abutted against the upper limiting plate on the left side of the static contact, the lower limiting plate is arranged on the right side of the moving contact and vertically moves up and down along with the moving contact, and when the static contact and the moving contact are switched off in place, the lower limiting bolt arranged on the right side of the knife switch seat through the lower supporting plate is abutted against the lower limiting plate.
Preferably, the stopper further comprises an upper light-operated proximity switch and a lower light-operated proximity switch, the upper light-operated proximity switch and the lower light-operated proximity switch are respectively fixed on the upper supporting plate and the lower supporting plate, the emitting heads of the upper light-operated proximity switch and the lower light-operated proximity switch are respectively arranged towards the upper limiting plate and the lower limiting plate, and the upper light-operated proximity switch and the lower light-operated proximity switch are respectively electrically connected with the controller.
Preferably, the upper connector lug and the lower connector lug at the upper end and the lower end of the resonance eliminator are respectively provided with an upper extension plate and a lower extension plate, the upper connector lug and the upper extension plate form an upper connector post head, the lower connector lug and the lower extension plate form a lower connector post head, the fixed contact is fixed on the bottom surface of the upper extension plate, and the knife switch seat is fixed on the top surface of the lower extension plate.
The invention has the beneficial effects that: according to the invention, one end of the static contact and one end of the movable contact are respectively electrically connected with the upper wiring pile head and the lower wiring pile head of the resonance eliminator, when the resonance eliminator normally operates, the movable contact and the static contact are in a phase-opening state, and when capacitance current is measured, the movable contact is driven by the driver to vertically move upwards along the knife switch seat so as to be switched on with the static contact, so that the resonance eliminator is quickly short-circuited, no hole needs to be formed in a switch cabinet, no power failure needs to occur in the whole operation process, a first work ticket is not used, only 1-2 operation tickets are needed, short-circuit wires do not need to be removed, the work efficiency is greatly improved, the work safety risk is reduced, and the resonance eliminator can be widely popularized and applied to voltage-variable neutral point resonance eliminators of switch cabinets such as 10kV and 20 kV; by arranging the upper limiting bolt and the lower limiting bolt and respectively abutting against and press-fitting with the upper limiting plate and the lower limiting plate, the upright post can be effectively prevented from excessively moving upwards or excessively moving downwards, and reliable switching-on or switching-off is ensured; by arranging the upper light-operated proximity switch and the lower light-operated proximity switch, when the brake is opened or the brake is closed in place, the power supply of the motor is automatically cut off, and the occurrence of excessive brake opening or excessive brake closing is further prevented.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a front view of an electrical ground control device for a switchgear detuner of the present invention;
FIG. 2 is a schematic diagram of the operation of the static contact and the moving contact of the electric grounding control device of the resonance eliminator of the switch cabinet when the switch is opened;
fig. 3 is a schematic diagram of the operation of the fixed contact and the movable contact of the electric grounding control device of the resonance eliminator of the switch cabinet when the switch is closed.
In the figure: 1-static contact, 2-moving contact, 3-knife switch seat, 31-lower seat body, 32-upper cylinder body, 4-driver, 41-motor, 42-transmission belt, 43-lead screw, 44-screw, 45-upright post, 451-cross bar, 5-position limiter, 51-upper position limiter, 52-lower position limiter, 53-upper support plate, 54-lower support plate, 55-upper position limiter, 56-lower position limiter, 57-upper light-controlled proximity switch, 58-lower light-controlled proximity switch, 6-harmonic eliminator, 61-upper connector, 62-lower connector, 63-upper extension plate and 64-lower extension plate.
[ detailed description ] embodiments
Referring to fig. 1, 2 and 3, the electric grounding control device for the resonance eliminator of the switch cabinet comprises a static contact 1, a moving contact 2, a knife switch base 3, a driver 4 and a controller, wherein one end of the static contact 1 and one end of the moving contact 2 are respectively electrically connected with an upper wiring pile head and a lower wiring pile head of the resonance eliminator 6, the driver 4 is electrically connected with the controller, and the driver 4 drives the moving contact 2 to vertically move up and down along the knife switch base 3 so as to be connected with or disconnected from the static contact 1.
The knife switch base 3 comprises a lower base body 31 and an upper barrel body 32, the driver 4 comprises a motor 41, a transmission belt 42, a screw rod 43, a nut 44 and an upright post 45, the motor 41 and the upper barrel body 32 are respectively fixed on the left side and the right side of the top surface of the lower base body 31, the screw rod 43 is vertically and rotatably connected in the upper barrel body 32, the lower end of an output shaft of the motor 41 and the lower end of the screw rod 43 respectively extend into the inner cavity of the lower base body 31, the output shaft of the motor 41 drives the screw rod 43 to rotate through the transmission belt 42, the nut 44 is fixed on the screw rod 43 in a threaded manner and is connected with the side wall of the lower end of the upright post 45, the upright post 45 is parallel to the screw rod 43, the top end of the upright post 43 extends out of the upper barrel body 32, and the movable contact 2 is fixed on the upright post 45 and is positioned under the static contact 1.
A cross bar 451 is arranged on the side wall of the top end of the upright 45, and the movable contact 2 is fixed on the cross bar 451.
The upper limiting bolt 55 is arranged on the left side of the moving contact 2 through the upper supporting plate 53 and vertically moves up and down along with the moving contact 2, when the static contact 1 and the moving contact 2 are switched on in place, the upper limiting bolt 55 is abutted against the upper limiting plate 51 on the left side of the static contact 1, the lower limiting plate 52 is arranged on the right side of the moving contact 2 and vertically moves up and down along with the moving contact 2, and when the static contact 1 and the moving contact 2 are switched off in place, the lower limiting bolt 56 arranged on the right side of the disconnecting link base 3 through the lower supporting plate 54 is abutted against the lower limiting plate 52 through the lower supporting plate 54.
The limiter 5 further comprises an upper light-operated proximity switch 57 and a lower light-operated proximity switch 58, the upper light-operated proximity switch 57 and the lower light-operated proximity switch 58 are respectively fixed on the upper supporting plate 53 and the lower supporting plate 54, the emitting heads of the upper light-operated proximity switch 57 and the lower light-operated proximity switch 58 are respectively arranged towards the upper limiting plate 51 and the lower limiting plate 52, and the upper light-operated proximity switch 57 and the lower light-operated proximity switch 58 are respectively electrically connected with the controller.
Be located last connector lug 61 and the lower connector lug 62 punishment at both ends are equipped with extension board 63 and lower extension board 64 respectively about harmonic elimination ware 6, go up connector lug 61 and last extension board 63 and form wiring pile head, lower connector lug 62 and lower extension board 64 form wiring pile head down, static contact 1 is fixed in the bottom surface of last extension board 63, the top surface of extension board 64 is fixed under to knife-switch seat 3.
The working process of the invention is as follows:
when the resonance eliminator 6 needs to be short-circuited, the motor 41 drives the screw rod 43 to rotate through the transmission belt 42, so that the nut 44 drives the upright post 45 to move upwards for a certain distance along the screw rod 43 until the moving contact 2 and the static contact 1 are closed. Meanwhile, the upper limit bolt 55 and the upper light-controlled proximity switch 57 at the upper support plate 53 gradually move upward along with the column 45, and the distance from the upper limit plate 51 gradually decreases. When the switching-on position is reached, the upper limiting bolt 55 is pressed against the upper limiting plate 51, and the upward movement of the upright post 45 is limited no matter whether the motor 41 stops rotating at the moment, so that reliable switching-on is ensured. Meanwhile, the upper light-controlled proximity switch 57 transmits data to the controller when the upper light-controlled proximity switch reaches the switching-on position, so that the power supply of the motor 41 is cut off, and excessive switching-on is prevented.
When the short-circuit resonance eliminator 6 is not needed, the motor 41 drives the upright post 44 to move downwards until the moving contact 2 and the static contact 1 are separated. The principle is the same as above. In the normal operation state of the resonance eliminator 6, the moving contact 2 and the static contact 1 are in a phase-opening state.
According to the invention, one end of the static contact and one end of the movable contact are respectively electrically connected with the upper wiring pile head and the lower wiring pile head of the resonance eliminator, when the resonance eliminator normally operates, the movable contact and the static contact are in a phase-opening state, and when capacitance current is measured, the movable contact is driven by the driver to vertically move upwards along the knife switch seat so as to be switched on with the static contact, so that the resonance eliminator is quickly short-circuited, no hole needs to be formed in a switch cabinet, no power failure needs to occur in the whole operation process, a first work ticket is not used, only 1-2 operation tickets are needed, short-circuit wires do not need to be removed, the work efficiency is greatly improved, the work safety risk is reduced, and the resonance eliminator can be widely popularized and applied to voltage-variable neutral point resonance eliminators of switch cabinets such as 10kV and 20 kV; by arranging the upper limiting bolt and the lower limiting bolt and respectively abutting against and press-fitting with the upper limiting plate and the lower limiting plate, the upright post can be effectively prevented from excessively moving upwards or excessively moving downwards, and reliable switching-on or switching-off is ensured; by arranging the upper light-operated proximity switch and the lower light-operated proximity switch, when the brake is opened or closed in place, the power supply of the motor is automatically cut off, and the occurrence of excessive brake opening or excessive switch closing is further prevented.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (5)
1. The utility model provides an electronic ground connection controlling means of cubical switchboard harmonic elimination ware which characterized in that: the device comprises a static contact (1), a moving contact (2), a disconnecting link seat (3), a driver (4) and a controller, wherein one end of the static contact (1) and one end of the moving contact (2) are respectively and electrically connected with an upper wiring pile head and a lower wiring pile head of a resonance eliminator (6), the driver (4) is electrically connected with the controller, the driver (4) drives the moving contact (2) to vertically move up and down along the disconnecting link seat (3) so as to be switched on or off with the static contact (1), the disconnecting link seat (3) comprises a lower seat body (31) and an upper cylinder body (32), the driver (4) comprises a motor (41), a transmission belt (42), a screw rod (43), a screw nut (44) and an upright post (45), the motor (41) and the upper cylinder body (32) are respectively fixed on the left side and the right side of the top surface of the lower seat body (31), the screw rod (43) is vertically and rotatably connected in the upper cylinder body (32), the lower end of an output shaft of the motor (41) and the lower end of the screw rod (43) respectively extend into an inner cavity of the lower seat body (31), the screw rod (43) is fixed in parallel with the upper end of the screw rod (45), and the screw rod (43) and the upper end of the screw rod (43) is connected with the upper cylinder body (32) and the upper cylinder body (43) and the upper cylinder body (45) and the screw rod (43) and the upper end of the screw rod (43) is fixed in parallel with the upper cylinder body (45), the upper cylinder body (43), the screw rod (43), the upper cylinder body (32), the screw rod (41) and the upper end of the screw rod (43) and the screw rod (45) The moving contact (2) is fixed on the upright post (45) and is positioned right below the static contact (1).
2. The switchgear harmonic eliminator electric ground control device of claim 1, characterized in that: the top side wall of the upright post (45) is provided with a cross rod (451), and the moving contact (2) is fixed on the cross rod (451).
3. The switchgear resonance eliminator electrical ground control device of claim 1, characterized in that: the upper limiting bolt (55) is arranged on the left side of the moving contact (2) through the upper supporting plate (53) and moves vertically along with the moving contact (2), when the static contact (1) and the moving contact (2) are switched on in place, the upper limiting bolt (55) is abutted against the upper limiting plate (51) on the left side of the static contact (1) and is pressed against the lower limiting plate (52), when the static contact (1) and the moving contact (2) are switched off in place, the lower limiting bolt (56) is arranged on the right side of the knife brake seat (3) through the lower supporting plate (54) and is abutted against the lower limiting plate (52), and when the static contact (1) and the moving contact (2) are switched off in place, the lower limiting bolt (56) is arranged on the right side of the knife brake seat (3) through the lower supporting plate (54).
4. A switchgear harmonic eliminator electrical ground control device as claimed in claim 3, characterized in that: the limiter (5) further comprises an upper light-operated proximity switch (57) and a lower light-operated proximity switch (58), the upper light-operated proximity switch (57) and the lower light-operated proximity switch (58) are respectively fixed on the upper supporting plate (53) and the lower supporting plate (54), the emitting heads of the upper light-operated proximity switch (57) and the lower light-operated proximity switch (58) are respectively arranged towards the upper limiting plate (51) and the lower limiting plate (52), and the upper light-operated proximity switch (57) and the lower light-operated proximity switch (58) are respectively electrically connected with the controller.
5. The switchgear resonance eliminator electrical ground control device of claim 1, characterized in that: lie in last connector lug (61) and lower connector lug (62) punishment at both ends are equipped with extension board (63) and lower extension board (64) respectively about harmonic elimination ware (6), go up connector lug (61) and last extension board (63) and form wiring pile head, lower connector lug (62) and lower extension board (64) form the lower wiring pile head, the bottom surface of last extension board (63) is fixed in static contact (1), the top surface of extension board (64) is fixed under in knife switch seat (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011122626.1A CN112509846B (en) | 2020-10-20 | 2020-10-20 | Electric grounding control device of switch cabinet harmonic eliminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011122626.1A CN112509846B (en) | 2020-10-20 | 2020-10-20 | Electric grounding control device of switch cabinet harmonic eliminator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112509846A CN112509846A (en) | 2021-03-16 |
| CN112509846B true CN112509846B (en) | 2022-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011122626.1A Active CN112509846B (en) | 2020-10-20 | 2020-10-20 | Electric grounding control device of switch cabinet harmonic eliminator |
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| CN (1) | CN112509846B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710676A (en) * | 2009-11-10 | 2010-05-19 | 刘亮 | Movable arc-suppression harmonic elimination device |
| CN203434910U (en) * | 2012-12-30 | 2014-02-12 | 深圳市广前电力有限公司 | Device for eliminating generator neutral point loop resonance in startup for gas turbine power plant |
| CN205595770U (en) * | 2016-03-28 | 2016-09-21 | 国网江西省电力科学研究院 | A harmonic elimination device of cooperation on -off arc extinction |
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| CN112509846A (en) | 2021-03-16 |
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Inventor after: Liu Yuhua Inventor after: Yang Wei Inventor after: Zhang Minghua Inventor after: Liu Yunxin Inventor after: Xu Siyuan Inventor after: Zhang Kan Inventor after: Zhang Huarong Inventor before: Liu Yuhua Inventor before: Zhang Minghua Inventor before: Liu Yunxin Inventor before: Xu Siyuan Inventor before: Zhang Kan Inventor before: Zhang Huarong |
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