CN115411536A - Terminal row-based live connection device and method for direct current power supplies - Google Patents

Terminal row-based live connection device and method for direct current power supplies Download PDF

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Publication number
CN115411536A
CN115411536A CN202210879421.0A CN202210879421A CN115411536A CN 115411536 A CN115411536 A CN 115411536A CN 202210879421 A CN202210879421 A CN 202210879421A CN 115411536 A CN115411536 A CN 115411536A
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CN
China
Prior art keywords
power supply
terminal block
wire
terminal
conductor
Prior art date
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.)
Pending
Application number
CN202210879421.0A
Other languages
Chinese (zh)
Inventor
张弘
石峥
牟磊
王黎
彭寅
王洋
马晓路
闫新
韩兴磊
宫邦润
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QINGDAO POWER SUPPLY Co OF STATE GRID SHANDONG ELECTRIC POWER Co
State Grid Corp of China SGCC
Original Assignee
QINGDAO POWER SUPPLY Co OF STATE GRID SHANDONG ELECTRIC POWER Co
State Grid Corp of China SGCC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by QINGDAO POWER SUPPLY Co OF STATE GRID SHANDONG ELECTRIC POWER Co, State Grid Corp of China SGCC filed Critical QINGDAO POWER SUPPLY Co OF STATE GRID SHANDONG ELECTRIC POWER Co
Priority to CN202210879421.0A priority Critical patent/CN115411536A/en
Publication of CN115411536A publication Critical patent/CN115411536A/en
Pending legal-status Critical Current

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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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/28—Terminal boards
    • 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
    • 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
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • 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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

The invention relates to a direct current power supply live connection device and a direct current power supply live connection method based on a terminal block, wherein the device comprises a wire connector, wherein one end of the wire connector is provided with a lead and a fastener which are connected with each other, and the wire connector is used for being connected with a conductor in the terminal block through a bridging screw hole in the middle of the terminal block; the other end is connected with the direct current power supply parallel module through a connecting wire. Twist into the conductor fastener in the bridging screw hole in the middle of the terminal row, arrange interim DC power supply through connecting module, connecting wire and conductor fastener guide to the terminal row, utilize interim DC power supply to change as the secondary equipment and connect the power during the operation, can be under the condition that does not influence equipment normal operating, safe and reliable carries out the DC power supply and the work of connecting of secondary equipment of transformer substation, easy and simple to handle, factor of safety is high, the work load and the operation risk that can very big reduction transformer substation direct current system changed.

Description

Terminal strip-based electrified parallel connection device and method for direct-current power supply
Technical Field
The invention relates to the technical field of power supply equipment and power system protection control, in particular to a terminal strip-based live connection device and method for a direct current power supply.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
The secondary equipment of the transformer substation is mostly supplied with power by adopting a direct-current power supply, and when the secondary equipment is connected in parallel, the direct-current power supply is required to be connected in parallel, moved and changed in order to ensure that the secondary equipment is reliable in operation and is finished in a non-power-off state. When the spare terminal is arranged on the power terminal of the secondary equipment of the transformer substation, the temporary direct-current power supply can be accessed by the spare terminal to complete the moving and the modification, and the operation is relatively simple, convenient and reliable. However, it is difficult to electrically connect the power source without the backup terminal.
At present, a terminal strip is additionally arranged to expand a standby terminal, and a temporary power supply is put on an original power supply terminal strip or a power supply is switched on empty by adopting a manual pressing method. However, these methods are not only complex to operate, but also have a high risk of error, and if the terminal strip needs to be pried to move out of the empty position, the device is prone to malfunction; the stability requirement of manual overlap joint to the overlap joint operator is extremely high, very easily causes the condition such as the short-time power loss of secondary equipment because of contact failure.
Disclosure of Invention
In order to solve at least one technical problem in the background art, the invention provides a terminal-row-based live direct-current power supply parallel connection device and a terminal-row-based live direct-current power supply parallel connection method, aiming at the situation that secondary equipment of a transformer substation using a UK-type terminal row as a power supply terminal does not have a standby power supply terminal and needs to replace a direct-current power supply without power outage, and a bridging screw hole in the middle of the UK terminal row can be used for safely and reliably parallel connection of the direct-current power supplies.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a terminal block-based direct-current power supply live connection device, which comprises a wire connector, wherein one end of the wire connector is provided with a connected wire and a fastener, and the wire connector is used for being connected with a conductor in a terminal block through a bridging screw hole in the middle of the terminal block; the other end is connected with the direct current power supply parallel module through a connecting wire.
The fastener comprises a conductor part and an insulating part which are connected together, and one end of a lead is connected with the conductor part of the fastener and then screwed into the bridging screw hole in the middle of the terminal row to be connected with the conductor in the terminal row; the conductor insulation part is exposed outside the terminal strip; the other end of the wire is connected in the connecting wire jack of the wire holder.
The terminal block may be a UK type terminal block.
The wire holder is provided with a connecting wire jack and a universal wiring terminal, the connecting wire jack and the universal wiring terminal are connected through a conductor, and the conductor is provided with a parallel switch.
The universal wiring terminal is connected with the direct current power supply parallel connection module through a connecting wire.
The direct current power supply parallel connection module is provided with a ground wire jack.
The direct current power supply parallel connection module is provided with at least one of a shunt, a direct current transformer and a Hall current sensor.
The direct current power supply parallel connection module is connected with a direct current power supply.
The second aspect of the present invention provides a method for realizing live connection based on the above device, including the following steps:
confirming that the equipment runs normally;
the conductor part of the fastener connected with the wire is screwed into the bridging screw hole of the terminal block, and after the conductor part is connected with the conductor in the terminal block, the other end of the wire is connected with a general wiring terminal of the wire connector;
under the state that the parallel switch is disconnected, the direct current parallel module is connected with a connecting wire jack of the wire connector through a connecting wire;
confirming that the equipment voltage is normal and the parallel connection switch is in a disconnected state, and connecting a temporary power supply to the direct current parallel connection module;
confirming that the voltage of the temporary power supply is normal, the voltage difference between two sides is within the allowed range of the direct-current closed loop, and connecting the switches in parallel to complete the parallel connection of the power supplies;
after the parallel switch is switched on, the parallel module has current flowing through, and the pressure difference between the two sides disappears; and after the parallel connection is finished, the original direct current power supply of the equipment is removed, and a new direct current power supply is connected.
Compared with the prior art, the above one or more technical schemes have the following beneficial effects:
twist into the conductor fastener in the bridging screw hole in the middle of the terminal row, with interim DC power supply through and connect the module, connecting wire and conductor fastener guide to the terminal row in, utilize interim DC power supply as the secondary equipment move and change and connect the power during the operation, can be under the condition that does not influence equipment normal operating, safe and reliable carries out the DC power supply and the work of transformer substation secondary equipment, easy and simple to handle, factor of safety is high, the work load and the operation risk that can very big reduction transformer substation direct current system changed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are included to illustrate an exemplary embodiment of the invention and not to limit the invention.
Fig. 1 is a schematic diagram of an overall structure of a dc power supply live-line connection apparatus according to one or more embodiments of the present invention;
fig. 2 is a schematic structural diagram of a junction between a connector and a UK-type terminal block in a dc power supply live parallel device according to one or more embodiments of the present invention;
FIG. 3 is a schematic diagram of a wire holder configuration of the wire connector provided in one or more embodiments of the present invention;
FIG. 4 is a schematic diagram of a splice module (monopole) configuration provided by one or more embodiments of the present invention;
FIG. 5 is a schematic diagram of a splice module (bipolar) configuration provided in accordance with one or more embodiments of the present invention;
FIG. 6 is a schematic view of a fastener arrangement in a wire connector provided in accordance with one or more embodiments of the present invention;
in the figure: 10. the terminal block comprises a terminal block inner conductor 11, a fastener conductor part 12, a fastener insulating part 2, an insulating sheath 3, a connecting wire jack 4, a universal wiring terminal 5 and a grounding wire jack.
Detailed Description
The invention is further described with reference to the following figures and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background art, when the secondary device does not have a terminal strip for live-line connection, at present, the method mainly includes expanding the standby terminal by adding the terminal strip, and using a manual pressing method to put the temporary power supply on the original power supply terminal strip or power supply idle switch. However, these methods are complicated in operation, and have a high risk of error, which is likely to cause malfunction of the apparatus, poor contact, short-term power loss of the apparatus, and the like.
Therefore, the following embodiments provide a device and a method for connecting dc power supplies in parallel in an electrified manner based on a terminal block, which can connect dc power supplies safely and reliably by using a bridging screw hole in the middle of a UK terminal block when there is no spare power supply terminal and the dc power supply needs to be replaced without power outage for a secondary device of a substation using the UK terminal block as a power supply terminal.
The first embodiment is as follows:
as shown in fig. 1 to 5, the present embodiment aims to provide a terminal strip based dc power supply live connection device, which includes:
one end of the wire connector is provided with a lead and a fastener which are connected with each other and are used for being connected with the conductor in the terminal block through a bridging screw hole in the middle of the terminal block; the other end is connected with the direct current power supply parallel module through a connecting wire.
The fastener comprises a conductor part 11 and an insulating part 12 which are connected together, and one end of a lead is connected with the conductor part 11 of the fastener and then screwed into a bridging screw hole in the middle of the terminal block to be connected with the conductor in the terminal block; the conductor insulating part 12 is exposed outside the terminal block, the outer surface of the lead is sleeved with the insulating sheath 2, and the other end of the lead is connected in the connecting wire jack 3 of the wire holder.
The terminal block may be a UK type terminal block.
The wire holder is provided with a connecting wire jack 3 and a universal wiring terminal, the connecting wire jack 3 and the universal wiring terminal are connected through a conductor, and the conductor is provided with a parallel switch.
The universal connecting terminal is connected with the direct-current power supply parallel connection module through a connecting wire.
The direct current power supply parallel connection module is provided with a ground wire jack 5.
The direct current power supply parallel connection module is provided with at least one of a shunt, a direct current transformer and a Hall current sensor.
The direct current power supply parallel connection module is connected with the temporary direct current power supply.
In the embodiment, the device consists of three parts, namely a specially-made wire connector used for being connected with the bridging screw hole, a direct current power supply parallel connection module with the voltage automatic detection function and a connecting wire between the direct current power supply parallel connection module and the direct current power supply parallel connection module.
In this embodiment, the wire connector is specially designed for the UK terminal block, and may be connected to the bridging screw hole of the UK terminal block through a conductive screw at the lower end to form a conductor connection. The contact part of screw top, connector and terminal row side is insulation design, short circuit risk when reducing the connector installation.
In this embodiment, the fastening member is a conductive screw, and the structure is as shown in fig. 6, the white portion of the conductive screw is a conductor portion 11, the black portion is an insulation portion 12, and the size of the conductive screw matches with the bridging screw hole in the middle of the UK terminal block. The conductive screw is hollow, the hollow cavity is connected with the through hole of the insulating part 12, a conductor in the wire extends into the conductive screw through the through hole, and is led out to the wire holder from the through hole of the insulating part 12 after being connected with the bottom end of the inner side of the conductive screw.
The part that the wire was drawn forth cup joints insulating sheath 2 at the surface outward and prevents to electrocute and open circuit, and the first half of electrically conductive screw is insulating material, and electrically conductive screw inserts behind the bridging screw hole at the middle part of UK terminal row, and externally exposed part is insulating, has reduced the risk that the misconnection and short circuit ground.
The conductive screw can be drilled by using a copper bar or a copper screw, a wire connected with a conductor in advance penetrates into the drilled hole, then the conductor is welded to the bottom end of the copper bar or the copper screw, the bottom end area is machined to form a conductor part 11, and the insulation part 12 and the exposed wire of the through hole part of the insulation part can be realized by coating or wrapping an insulation material, for example, the insulation part is realized by wrapping a heat shrinkable sleeve after being heated.
In this embodiment, one side of the dc power parallel module is connected to the connector through a connection line to access the device power, one side of the dc power parallel module provides a temporary power access for the screw compression terminal or the test wire plug terminal, and both sides of the dc power parallel module are the connecting piece type disconnectable switch.
In this embodiment, the dc power parallel module has a voltage measurement function of the power supplies on both sides, a voltage difference between the voltages on both sides, and a measurement function of the current flowing through the parallel module. The current measurement can use a current divider, a direct current transformer, a Hall current sensor and other direct current measurement principles. The direct-current power supply parallel connection module can be configured according to a single line and used for parallel connection of a direct-current power supply, and two positive and negative direct-current connecting wires can be integrated in the same parallel connection module.
In this embodiment, the connecting wire is used for connecting the wire connector and the direct current power supply, and the connecting wire uses the sheath insulating stranded annealed copper wire, and both sides plug has the hasp to prevent not hard up.
Above-mentioned device utilizes twists the conductor fastener in the bridging screw hole in the middle of the UK type terminal strip, with interim DC power supply through and connect the module, connecting wire and conductor fastener guide to the terminal strip in, utilize interim DC power supply to change as the secondary equipment moves and connect the power during the operation, can be under the condition that does not influence equipment normal operating, safe and reliable carries out the DC power supply and the work of transformer substation's secondary equipment, and is easy and simple to handle, factor of safety is high, the work load and the operation risk that the reduction transformer substation's DC system that can be very big changed.
Example two:
the method for realizing the live connection of the direct current power supply based on the terminal strip based on the device comprises the following steps:
when the device is used, firstly, the operation of the device and the normal power supply are confirmed, then, a screwdriver is used for connecting a wire connector to a bridging screw hole of a terminal block in a screwed mode, the wire connector is connected with one side of the parallel connection module through a connecting wire, after the voltage on the device side is confirmed to be normal and the parallel connection module parallel connection switch is in an off state, the wire of the temporary power supply is connected to the other side of the parallel connection module, the voltage on the temporary power supply side is confirmed to be normal by the parallel connection module, and after the voltage difference between the two sides is within the allowable range of the direct current loop, the parallel connection switch is connected to complete the parallel connection of the power supply. After the parallel switch is switched on, the parallel module should have current flowing, the pressure difference between the two sides disappears, and at the moment, the original direct current power supply of the detachable device is confirmed to be connected with a new direct current power supply.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a DC power supply is electrified to be connected device based on terminal row which characterized in that: the connector comprises a connector, wherein one end of the connector is provided with a conducting wire and a fastener which are connected with each other and are used for being connected with a conductor in a terminal block through a bridging screw hole in the middle of the terminal block; the other end is connected with the direct current power supply parallel connection module through a connecting wire.
2. The live connection device of a terminal block-based dc power supply of claim 1, wherein: the fastener comprises a conductor part and an insulating part which are connected together, and one end of a lead is connected with the conductor part of the fastener and then screwed into a bridging screw hole in the middle of the terminal block to be connected with the conductor in the terminal block; the other end of the wire is connected in the connecting wire jack of the wire holder.
3. The apparatus of claim 2, wherein the terminal block-based dc power supply live connection means comprises: the wire holder is provided with a connecting wire jack and a universal wiring terminal, the connecting wire jack and the universal wiring terminal are connected through a conductor, and the conductor is provided with a parallel switch.
4. The apparatus of claim 3, wherein the terminal block-based dc power supply live connection means comprises: and the universal wiring terminal is connected with the direct-current power supply parallel connection module through a connecting wire.
5. The live connection device of a terminal block-based dc power supply of claim 1, wherein: the terminal strip is a UK type terminal strip.
6. The live connection device of a terminal block-based dc power supply of claim 1, wherein: the direct-current power supply parallel connection module is provided with a ground wire jack.
7. The live connection device of a terminal block-based dc power supply of claim 1, wherein: the direct current power supply parallel connection module is provided with at least one of a current divider, a direct current transformer and a Hall current sensor.
8. The live connection device of a terminal block-based dc power supply of claim 1, wherein: and the direct-current power supply parallel connection module is connected with a direct-current power supply.
9. Method for realizing live splicing based on the device of any one of claims 1-8, characterized in that: the method comprises the following steps:
confirming that the equipment runs normally;
the conductor part of the fastener connected with the wire is screwed into the bridging screw hole of the terminal block, and after the conductor part is connected with the conductor in the terminal block, the other end of the wire is connected with a universal wiring terminal of the wire connector;
under the state that the parallel switch is disconnected, the direct current parallel module is connected with a connecting wire jack of the wire connector through a connecting wire;
confirming that the equipment voltage is normal and the parallel connection switch is in a disconnected state, and connecting a temporary power supply to the direct current parallel connection module;
and confirming that the voltage of the temporary power supply is normal, ensuring that the voltage difference between two sides is within the allowable range of the direct-current closed loop, and connecting the switches in parallel to conduct to finish the parallel connection of the power supply.
10. The method of claim 9, wherein: after the parallel switch is switched on, the parallel module has current flowing through, and the voltage difference between the two sides disappears.
CN202210879421.0A 2022-07-25 2022-07-25 Terminal row-based live connection device and method for direct current power supplies Pending CN115411536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210879421.0A CN115411536A (en) 2022-07-25 2022-07-25 Terminal row-based live connection device and method for direct current power supplies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210879421.0A CN115411536A (en) 2022-07-25 2022-07-25 Terminal row-based live connection device and method for direct current power supplies

Publications (1)

Publication Number Publication Date
CN115411536A true CN115411536A (en) 2022-11-29

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ID=84158332

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210879421.0A Pending CN115411536A (en) 2022-07-25 2022-07-25 Terminal row-based live connection device and method for direct current power supplies

Country Status (1)

Country Link
CN (1) CN115411536A (en)

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