CN116344177A - Grounding connection structure for voltage transformer and use method - Google Patents
Grounding connection structure for voltage transformer and use method Download PDFInfo
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- CN116344177A CN116344177A CN202310472055.1A CN202310472055A CN116344177A CN 116344177 A CN116344177 A CN 116344177A CN 202310472055 A CN202310472055 A CN 202310472055A CN 116344177 A CN116344177 A CN 116344177A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 238000011084 recovery Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention provides a grounding connection structure for a voltage transformer and a use method thereof.A first connecting rod is arranged on a fixed seat in a penetrating way, one end of the first connecting rod is fixedly connected with the top corner part of the middle part of an L-shaped connecting plate for driving the first connecting rod to rotate, the bottom corner part of the L-shaped connecting plate is hinged and connected with a sliding locking plate for driving the first connecting rod to rotate through a first pin roll, and the sliding locking plate is matched with a positioning pin fixed on the outer wall of the fixed seat; the top angle position of the L-shaped connecting plate is provided with a second connecting rod, the other ends of the second connecting rod and the first connecting rod are fixed with a first connecting plate, the top end of the first connecting plate is hinged with a second connecting plate through a second pin shaft, and the top end of the second connecting plate is hinged with an ear plate at the back of the contact piece through a third pin shaft. The connection structure can well solve the problem that after the voltage transformer is overhauled, the situation that the secondary terminal N, X transmits power to the equipment and operates without restoring the ground due to human factors is avoided; the grounding reliability of the N, X connecting piece can be effectively improved.
Description
Technical Field
The invention relates to the field of grounding devices, in particular to a grounding connection structure for a voltage transformer and a use method thereof.
Background
The capacitive voltage transformer product is outdoor-mounted electrical equipment and is used for converting primary high voltage into a secondary low-voltage signal which is easy to measure, and the capacitive voltage transformer product is key equipment for electric quantity measurement, and directly influences the economic benefit of a power plant after faults. The secondary low-voltage signal is integrated on a secondary wiring board in the secondary outlet box, a capacitive voltage divider circuit grounding terminal is led out from an N terminal, and an electromagnetic unit circuit grounding terminal is led out from an X terminal. In normal operation, the two terminals need to be firmly grounded, and if the two terminals are not grounded, the secondary terminal discharge fault can be caused.
During the power failure maintenance period of the voltage transformer, a worker needs to disconnect the terminals such as N, X one by one to be grounded when performing the test, and the connection is restored one by one when the test is completed.
The prior art has higher dependency on the working state and the working capacity of maintenance staff, and when the working state is poor or the working flow is unfamiliar, forgetting and missing the recovery wiring operation of the grounding terminal of the equipment N, X can occur, so that the condition that the equipment is not grounded and is powered on to operate is triggered. Because the equipment outlet box door is closed, the earth fault of the equipment N, X terminal cannot be observed, and the fault cannot be found in time from the background monitoring device in a short time after the power transmission N, X terminal is earthed through a fault arc, the situation that the fault is found after the fault is leaked because carbonization is caused by the high temperature of the arc to the N, X terminal of the secondary wiring board often happens, and the fault is enlarged is caused.
Disclosure of Invention
In order to solve the technical problems, the invention provides the grounding connection structure for the voltage transformer and the use method thereof, and the grounding connection structure can well solve the problem that the situation that the secondary terminal N, X transmits power to equipment for operation without restoring the grounding caused by human factors after the voltage transformer is overhauled is avoided; the method can effectively improve the grounding reliability of the N, X connecting piece and greatly reduce the risk of unreliable grounding operation of the N, X connecting piece.
In order to achieve the technical characteristics, the aim of the invention is realized in the following way: the grounding connection structure for the voltage transformer comprises a fixed seat, wherein a first connecting rod is arranged on the fixed seat in a penetrating manner, one end of the first connecting rod is fixedly connected with the top corner part of the middle part of an L-shaped connecting plate for driving the first connecting rod to rotate, the bottom corner part of the L-shaped connecting plate is hinged and connected with a sliding locking plate for driving the first connecting rod to rotate through a first pin shaft, and the sliding locking plate is matched with a positioning pin fixed on the outer wall of the fixed seat; the top angle position of the L-shaped connecting plate is provided with a second connecting rod, the other ends of the second connecting rod and the first connecting rod are fixed with a first connecting plate, the top end of the first connecting plate is hinged with a second connecting plate through a second pin shaft, and the top end of the second connecting plate is hinged with an ear plate at the back of the contact piece through a third pin shaft.
The fixing seat adopts a U-shaped structure, and when the fixing seat is installed, the bottom plate of the U-shaped structure is fixedly installed on the bottom plate of the secondary terminal box.
A first hinge hole used for penetrating through the first connecting rod is processed between the two vertical plates of the U-shaped structure, and a second hinge hole used for installing the locating pin is formed in the diagonal end of the first hinge hole.
The contact piece adopts the sheetmetal, processing has the first wiring hole that is used for with N terminal matched with on the contact piece, processing has the second wiring hole that is used for with X terminal matched with on the contact piece, processing has the third wiring hole that is used for with ground terminal matched with on the contact piece.
And a third hinge hole matched with the third pin shaft is formed in the lug plate.
One end of the second connecting plate is provided with a fourth hinge hole matched with the third pin shaft, and the other end of the second connecting plate is provided with a fifth hinge hole matched with the second pin shaft.
One end of the first connecting plate is provided with a sixth hinge hole matched with the second pin shaft, and the other end of the first connecting plate is provided with a seventh hinge hole and an eighth hinge hole matched with the second connecting rod and the first connecting rod.
The corner of the L-shaped connecting plate is provided with a ninth hinge hole matched with the first connecting rod, the vertex angle of the L-shaped connecting plate is provided with a ninth hinge hole matched with the second connecting rod, and the bottom corner of the L-shaped connecting plate is provided with a tenth hinge hole matched with the first pin shaft.
The end of the sliding lock plate is provided with an eleventh hinge hole matched with the first pin shaft, the sliding lock plate is provided with a sliding groove matched with the positioning pin, and one end of the tail of the sliding lock plate is provided with a tail hook head.
The application method of the grounding connection structure for the voltage transformer comprises the following steps:
step one, mounting a grounding connection structure:
fixedly mounting a grounding connection structure in a secondary terminal box of the voltage transformer, and correspondingly connecting a first wiring hole, a second wiring hole and a third wiring hole on a contact piece with an N terminal, an X terminal and a grounding terminal respectively;
step two, the normal running state of the voltage transformer:
when the voltage transformer normally operates, the contact piece of the grounding connection structure is attached to the secondary wiring board of the voltage transformer, the N terminal and the X terminal are connected with corresponding wiring holes in the contact piece, and the rest third wiring holes on the contact piece are connected with the ground;
step three, when the voltage transformer equipment is out of operation for overhauling:
disconnecting the secondary wiring board of the voltage transformer from the contact piece, rotating the first connecting board at the moment, folding the second connecting board, folding the contact piece through the second connecting board, driving the second connecting rod through rotation of the first connecting board, driving the L-shaped connecting board through the second connecting rod, synchronously driving the sliding locking plate to slide along the positioning pin through the L-shaped connecting board, and finally enabling the tail end of the sliding locking plate to extend out of the secondary terminal box, so that the box door is blocked from being closed;
through the operation in step three for voltage transformer equipment N terminal, when X terminal did not pass through the contact piece ground connection, can't close the box door, thereby make staff, inspection personnel in time know the inside wiring condition of secondary terminal box, avoid the condition emergence of ungrounded power transmission, and lead to the trouble to enlarge, improve equipment operational reliability, fundamentally solve the equipment operational risk that voltage transformer equipment did not ground connection lead to.
The invention has the beneficial effects that:
1. the connection structure can well solve the problem that the secondary terminal N, X is not restored to the ground to transmit power to the equipment for operation caused by human factors after the voltage transformer is overhauled; the method can effectively improve the grounding reliability of the N, X connecting piece and greatly reduce the risk of unreliable grounding operation of the N, X connecting piece.
2. The stability and the reliability of the fixed installation of the fixing seat are guaranteed through the U-shaped structure, and the whole grounding connection structure is guaranteed to be reliably fixed in the secondary terminal box.
3. The installation and fixation of the L-shaped connecting plate and the sliding lock plate can be realized through the U-shaped structure.
4. The contact piece can be used for reliably connecting with an N terminal, an X terminal and a grounding terminal on a secondary wiring board.
5. The second connecting plate can conveniently realize the disconnection of the subsequent contact piece and the secondary wiring board, and can meet the requirements of different mounting positions.
6. The transmission of power can be realized through foretell first connecting plate, and then follow-up L type connecting plate that drives through first connecting plate of being convenient for, and then follow-up slip locking plate of L type connecting plate drive.
7. The L-shaped connecting plate can be used for transmitting power, so that the L-shaped connecting plate can be driven through the first connecting plate, and the sliding locking plate is driven by the L-shaped connecting plate, so that the sliding locking plate can be enabled to extend out of the secondary terminal box.
8. Through foretell slip locking plate has guaranteed that it can slide along the spout under the drive effect of L type connecting plate, and then stretches out the afterbody gib head of slip locking plate and stretches out the secondary terminal box, has guaranteed that equipment is at normal maintenance in-process, carries out effectual blocking to the door body of secondary terminal box, can't close the box door.
Drawings
The invention is further described below with reference to the drawings and examples.
Fig. 1 is a left side view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a right side view of the present invention.
Fig. 4 is a view showing the structure of the connection between the ear plate and the contact plate according to the present invention.
Fig. 5 is a structural view of a second connecting plate of the present invention.
Fig. 6 is a structural view of a first connection plate of the present invention.
Fig. 7 is a side view of the holder of the present invention.
Fig. 8 is a structural view of the L-shaped connection plate of the present invention.
Fig. 9 is a block diagram of a slide lock tab of the present invention.
Fig. 10 is a front view showing the mating connection of the ground connection structure of the present invention and the secondary wiring board in an operative state.
Fig. 11 is a side view of the mating connection of the ground connection structure of the present invention with a secondary patch panel in an operative condition.
Fig. 12 is a side view of the mating connection of the ground connection structure of the present invention with a secondary patch panel in a test condition.
Fig. 13 (a), (b), (c) and (d) are operational diagrams of the ground connection structure and the secondary wiring board of the present invention when overhauling.
In the figure: the contact piece 1, the third pin shaft 2, the ear plate 3, the second connecting plate 4, the second pin shaft 5, the first connecting plate 6, the second connecting rod 7, the L-shaped connecting plate 8, the first connecting rod 9, the first pin shaft 10, the fixing seat 11, the sliding locking plate 12, the locating pin 13, the secondary terminal box 14, the secondary wiring board 15, the N terminal 16, the X terminal 17 and the grounding terminal 18;
the first wiring hole 101, the second wiring hole 102, the third wiring hole 103, the third hinge hole 301, the fourth hinge hole 401, the fifth hinge hole 402, the sixth hinge hole 601, the seventh hinge hole 602, the eighth hinge hole 603, the ninth hinge hole 801, the ninth hinge hole 802, the tenth hinge hole 803, the eleventh hinge hole 1201, the slide groove 1202, and the tail hook 1203.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
noun interpretation in the present invention:
secondary terminal: and a plurality of outgoing terminals on the low-voltage side of the voltage transformer product.
N terminal: one of the secondary terminals of the voltage transformer product is used for grounding the tail end of the capacitive voltage divider loop.
X terminal: one of the secondary terminals of the voltage transformer product is used for grounding the end of the loop of the electromagnetic unit.
Secondary wiring board: and an insulating plate of the secondary terminal of the integrated voltage transformer is arranged in the secondary outlet box.
Secondary terminal box: the box body of the secondary side of the voltage transformer, the outlet box is provided with a box door.
Referring to fig. 1-13, a grounding connection structure for a voltage transformer comprises a fixed seat 11, wherein a first connecting rod 9 is installed on the fixed seat 11 in a penetrating manner, one end of the first connecting rod 9 is fixedly connected with a top corner part of the middle of an L-shaped connecting plate 8 for driving the first connecting rod to rotate, a bottom corner part of the L-shaped connecting plate 8 is hinged and connected with a sliding locking plate 12 for driving the first connecting plate to rotate through a first pin shaft 10, and the sliding locking plate 12 is matched with a positioning pin 13 fixed on the outer wall of the fixed seat 11; the second connecting rod 7 is installed at the apex angle position of L connecting plate 8, and second connecting rod 7 and the other end of first connecting rod 9 are fixed with first connecting plate 6, and the top of first connecting plate 6 articulates through second round pin axle 5 has second connecting plate 4, and the top of second connecting plate 4 articulates through third round pin axle 2 with the otic placode 3 at contact piece 1 back and links to each other. The connection structure can well solve the problem that the secondary terminal N, X is not restored to the ground to transmit power to the equipment for operation caused by human factors after the voltage transformer is overhauled; the method can effectively improve the grounding reliability of the N, X connecting piece and greatly reduce the risk of unreliable grounding operation of the N, X connecting piece. By combining
Further, the fixing base 11 adopts a U-shaped structure, and when in installation, the bottom plate of the U-shaped structure is fixedly installed on the bottom plate of the secondary terminal box 14. The stability and reliability of the fixed mounting of the fixing seat 11 are ensured through the above-mentioned U-shaped structure, and the whole grounding connection structure is further ensured to be reliably fixed in the secondary terminal box 14.
Further, a first hinge hole 1101 for passing through the first link 9 is machined between the two upright plates of the U-shaped structure, and a second hinge hole 1102 for installing the positioning pin 13 is arranged at the diagonal end of the first hinge hole 1101. The installation and fixation of the L-shaped connecting plate and the sliding lock plate can be realized through the U-shaped structure.
Further, the contact piece 1 is a metal sheet, a first wiring hole 101 for matching with the N terminal 16 is machined in the contact piece 1, a second wiring hole 102 for matching with the X terminal 17 is machined in the contact piece 1, and a third wiring hole 103 for matching with the ground terminal 18 is machined in the contact piece 1. The contact piece 1 described above can be used to make reliable connection with the N terminal 16, the X terminal 17, and the ground terminal on the secondary wiring board 15.
Further, a third hinge hole 301 for matching with the third pin shaft 2 is formed on the ear plate 3. The contact piece 1 and the second connecting plate 4 can be conveniently connected in a mounting way through the ear plate 3.
Further, a fourth hinge hole 401 for matching with the third pin shaft 2 is formed at one end of the second connecting plate 4, and a fifth hinge hole 402 for matching with the second pin shaft 5 is formed at the other end of the second connecting plate 4. The second connecting plate 4 can conveniently realize the disconnection of the subsequent contact piece 1 and the secondary wiring board 15, and ensure that the connection can adapt to the requirements of different mounting positions.
Further, a sixth hinge hole 601 for matching with the second pin 5 is formed at one end of the first connecting plate 6, and a seventh hinge hole 602 and an eighth hinge hole 603 for matching with the second connecting rod 7 and the first connecting rod 9 are formed at the other end of the first connecting plate 6. The transmission of power can be realized through the first connecting plate 6, and then follow-up L-shaped connecting plate 8 is driven through the first connecting plate 6, and then follow-up sliding lock plate 12 is driven through the L-shaped connecting plate 8.
Further, a ninth hinge hole 802 for matching with the first link 9 is formed at a corner of the L-shaped connecting plate 8, a ninth hinge hole 801 for matching with the second link 7 is formed at a top corner of the L-shaped connecting plate 8, and a tenth hinge hole 803 for matching with the first pin 10 is formed at a bottom corner of the L-shaped connecting plate 8. The L-shaped connecting plate 8 can be used for transmitting power, so that the L-shaped connecting plate 8 can be driven through the first connecting plate 6, the sliding lock plate 12 is driven by the L-shaped connecting plate 8, and the sliding lock plate 12 can be enabled to extend out of the secondary terminal box 14.
Further, an eleventh hinge hole 1201 for matching with the first pin 10 is formed at the end of the sliding lock piece 12, a sliding groove 1202 for matching with the positioning pin 13 is formed on the sliding lock piece 12, and a tail hook 1203 is disposed at one end of the tail of the sliding lock piece 12. Through the sliding lock plate 12, the sliding lock plate can slide along the sliding groove 1202 under the driving action of the L-shaped connecting plate 8, the tail hook head 1203 of the sliding lock plate 12 is further extended out of the secondary terminal box 14, the situation that the door body of the secondary terminal box 14 is effectively blocked and the box door cannot be closed in the normal overhaul process of equipment is guaranteed, so that workers and inspectors can timely know the wiring condition inside the wire box, the situation that power transmission is not grounded is avoided, the operation reliability of the equipment is improved due to the fact that faults are enlarged, and the operation risk of the equipment caused by the N terminal 16, the X terminal 17 and the ungrounded equipment is fundamentally solved.
Example 2:
referring to fig. 13, a method for using a grounding connection structure for a voltage transformer includes the following steps:
step one, mounting a grounding connection structure:
fixedly mounting a grounding connection structure inside a secondary terminal box 14 of the voltage transformer, and correspondingly connecting a first wiring hole 101, a second wiring hole 102 and a third wiring hole 103 on the contact piece 1 with an N terminal 16, an X terminal 17 and a grounding terminal 18 respectively;
step two, the normal running state of the voltage transformer:
when the voltage transformer normally operates, the contact piece 1 of the grounding connection structure is attached to the secondary wiring board 15 of the voltage transformer, the N terminal 16 and the X terminal 17 are connected with corresponding wiring holes in the contact piece 1, and the rest third wiring holes 103 on the contact piece 1 are connected with the ground;
step three, when the voltage transformer equipment is out of operation for overhauling:
disconnecting the secondary wiring board 15 of the voltage transformer from the contact piece 1, rotating the first connecting board 6 at the moment, folding the second connecting board 4, folding the contact piece 1 through the second connecting board 4, simultaneously driving the second connecting rod 7 through the rotation of the first connecting board 6, driving the L-shaped connecting board 8 through the second connecting rod 7, synchronously driving the sliding locking piece 12 to slide along the positioning pin 13 through the L-shaped connecting board 8, finally enabling the tail end of the sliding locking piece 12 to extend out of the secondary terminal box 14, and further blocking the closing of the box door;
through the operation in step three for when voltage transformer equipment N terminal 16, X terminal 17 did not pass through contact piece 1 ground connection, can't close the box door, thereby make staff, inspection personnel in time know the inside wiring condition of secondary terminal box 14, avoid the condition emergence of ungrounded power transmission, and lead to the trouble to enlarge, improve equipment operational reliability, fundamentally solve the equipment operational risk that voltage transformer equipment did not ground connection lead to.
Claims (10)
1. The grounding connection structure for the voltage transformer is characterized by comprising a fixed seat (11), wherein a first connecting rod (9) is arranged on the fixed seat (11) in a penetrating manner, one end of the first connecting rod (9) is fixedly connected with the middle top angle part of an L-shaped connecting plate (8) for driving the first connecting rod to rotate, the bottom angle part of the L-shaped connecting plate (8) is hinged and connected with a sliding locking plate (12) for driving the first connecting plate to rotate through a first pin roll (10), and the sliding locking plate (12) is matched with a positioning pin (13) fixed on the outer wall of the fixed seat (11); the second connecting rod (7) is installed at the apex angle position of L type connecting plate (8), and the other end of second connecting rod (7) and first connecting rod (9) is fixed with first connecting plate (6), and the top of first connecting plate (6) articulates through second round pin axle (5) has second connecting plate (4), and the top of second connecting plate (4) articulates with otic placode (3) at contact patch (1) back through third round pin axle (2) and links to each other.
2. The grounding connection structure for a voltage transformer according to claim 1, wherein the fixing base (11) adopts a U-shaped structure, and a bottom plate of the U-shaped structure is fixedly arranged on a bottom plate of the secondary terminal box (14) during installation.
3. The grounding connection structure for a voltage transformer according to claim 2, wherein a first hinge hole (1101) for passing through the first connecting rod (9) is formed between two vertical plates of the U-shaped structure, and a second hinge hole (1102) for installing the positioning pin (13) is formed at the diagonal end of the first hinge hole (1101).
4. The grounding connection structure for the voltage transformer according to claim 1, wherein the contact piece (1) is made of a metal sheet, a first wiring hole (101) for being matched with the N terminal (16) is formed in the contact piece (1), a second wiring hole (102) for being matched with the X terminal (17) is formed in the contact piece (1), and a third wiring hole (103) for being matched with the grounding terminal (18) is formed in the contact piece (1).
5. The grounding connection structure for a voltage transformer according to claim 1, wherein a third hinge hole (301) for matching with the third pin shaft (2) is formed on the ear plate (3).
6. The grounding connection structure for a voltage transformer according to claim 5, wherein one end of the second connecting plate (4) is provided with a fourth hinge hole (401) for being matched with the third pin shaft (2), and the other end of the second connecting plate (4) is provided with a fifth hinge hole (402) for being matched with the second pin shaft (5).
7. The grounding connection structure for a voltage transformer according to claim 1, wherein one end of the first connecting plate (6) is provided with a sixth hinge hole (601) for being matched with the second pin shaft (5), and the other end of the first connecting plate (6) is provided with a seventh hinge hole (602) and an eighth hinge hole (603) for being matched with the second connecting rod (7) and the first connecting rod (9).
8. The grounding connection structure for the voltage transformer according to claim 1, wherein a ninth hinging hole (802) for being matched with the first connecting rod (9) is formed in a corner portion of the L-shaped connecting plate (8), a ninth hinging hole (801) for being matched with the second connecting rod (7) is formed in a vertex angle portion of the L-shaped connecting plate (8), and a tenth hinging hole (803) for being matched with the first pin shaft (10) is formed in a bottom corner portion of the L-shaped connecting plate (8).
9. The grounding connection structure for a voltage transformer according to claim 1, wherein an eleventh hinge hole (1201) for being matched with the first pin shaft (10) is formed in the end of the sliding lock plate (12), a sliding groove (1202) for being matched with the positioning pin (13) is formed in the sliding lock plate (12), and a tail hook head (1203) is arranged at one end of the tail of the sliding lock plate (12).
10. The method of using a grounding connection structure for a voltage transformer according to any one of claims 1 to 9, comprising the steps of:
step one, mounting a grounding connection structure:
fixedly mounting a grounding connection structure in a secondary terminal box (14) of the voltage transformer, and correspondingly connecting a first wiring hole (101), a second wiring hole (102) and a third wiring hole (103) on a contact piece (1) with an N terminal (16), an X terminal (17) and a grounding terminal (18) respectively;
step two, the normal running state of the voltage transformer:
when the voltage transformer normally operates, the contact piece (1) of the grounding connection structure is attached to the secondary wiring board (15) of the voltage transformer, the N terminal (16), the X terminal (17) is connected with the corresponding wiring hole in the contact piece (1), and the rest third wiring hole (103) on the contact piece (1) is connected with the ground;
step three, when the voltage transformer equipment is out of operation for overhauling:
disconnecting the secondary wiring board (15) of the voltage transformer from the contact piece (1), rotating the first connecting board (6) at the moment, folding the second connecting board (4), folding the contact piece (1) through the second connecting board (4), driving the second connecting rod (7) through rotation of the first connecting board (6), driving the L-shaped connecting board (8) through the second connecting rod (7), synchronously driving the sliding locking piece (12) to slide along the positioning pin (13) through the L-shaped connecting board (8), and finally enabling the tail end of the sliding locking piece (12) to extend out of the secondary terminal box (14), so as to stop the box door from being closed;
through the operation in step three for voltage transformer equipment N terminal (16), when X terminal (17) did not pass through contact piece (1) ground connection, can't close the box door to make staff, inspection personnel in time know the inside wiring condition of secondary terminal box (14), avoid the condition emergence of ungrounded power transmission, and lead to the trouble to enlarge, improve equipment operational reliability, fundamentally solve the equipment operational risk that voltage transformer equipment did not ground connection lead to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310472055.1A CN116344177A (en) | 2023-04-27 | 2023-04-27 | Grounding connection structure for voltage transformer and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310472055.1A CN116344177A (en) | 2023-04-27 | 2023-04-27 | Grounding connection structure for voltage transformer and use method |
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| CN116344177A true CN116344177A (en) | 2023-06-27 |
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| CN202310472055.1A Pending CN116344177A (en) | 2023-04-27 | 2023-04-27 | Grounding connection structure for voltage transformer and use method |
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| CN (1) | CN116344177A (en) |
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| CN201252037Y (en) * | 2008-09-05 | 2009-06-03 | 厦门华电开关有限公司 | Interlocking device for cable vault door |
| CN201886947U (en) * | 2010-11-01 | 2011-06-29 | 安徽省电力公司阜阳供电公司 | 10KV outdoor pole mounted earth load switch |
| CN103604971A (en) * | 2013-11-27 | 2014-02-26 | 江苏思源赫兹互感器有限公司 | Voltage mutual inductor convenient to install and overhaul |
| KR20180069580A (en) * | 2016-12-15 | 2018-06-25 | 엘에스산전 주식회사 | Door Interlock Device of Distribution Board |
| CN207602463U (en) * | 2017-11-29 | 2018-07-10 | 山东爱普电气设备有限公司 | A kind of high-voltage switch cabinet grounding switch and the interlock at back door |
| CN111180228A (en) * | 2020-01-15 | 2020-05-19 | 云南电网有限责任公司电力科学研究院 | Interlocking device |
-
2023
- 2023-04-27 CN CN202310472055.1A patent/CN116344177A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201252037Y (en) * | 2008-09-05 | 2009-06-03 | 厦门华电开关有限公司 | Interlocking device for cable vault door |
| CN201886947U (en) * | 2010-11-01 | 2011-06-29 | 安徽省电力公司阜阳供电公司 | 10KV outdoor pole mounted earth load switch |
| CN103604971A (en) * | 2013-11-27 | 2014-02-26 | 江苏思源赫兹互感器有限公司 | Voltage mutual inductor convenient to install and overhaul |
| KR20180069580A (en) * | 2016-12-15 | 2018-06-25 | 엘에스산전 주식회사 | Door Interlock Device of Distribution Board |
| CN207602463U (en) * | 2017-11-29 | 2018-07-10 | 山东爱普电气设备有限公司 | A kind of high-voltage switch cabinet grounding switch and the interlock at back door |
| CN111180228A (en) * | 2020-01-15 | 2020-05-19 | 云南电网有限责任公司电力科学研究院 | Interlocking device |
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