CN109167286A - Power distribution network current transformer live replacing device - Google Patents
Power distribution network current transformer live replacing device Download PDFInfo
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- CN109167286A CN109167286A CN201810873762.0A CN201810873762A CN109167286A CN 109167286 A CN109167286 A CN 109167286A CN 201810873762 A CN201810873762 A CN 201810873762A CN 109167286 A CN109167286 A CN 109167286A
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- linkage mechanism
- current transformer
- box body
- spring
- spring contact
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
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Abstract
The invention proposes a kind of power distribution network current transformer live replacing devices, it include: bracket, and positioned at same central axes and the busbar side linkage mechanism, the rotation linkage mechanism and mutual inductor side linkage mechanism that are connected, the two sides of rotation linkage mechanism are arranged in busbar side linkage mechanism and mutual inductor side linkage mechanism, busbar side linkage mechanism is connect with primary current busbar, and mutual inductor side linkage mechanism is connect with current transformer；It rotates linkage mechanism to rotate around central axes, to control current transformer access or exit primary system；Busbar side linkage mechanism and mutual inductor side linkage mechanism are connect with bracket, and bracket is also used to place current transformer.By the cooperation of each linkage mechanism of live replacing device to realize in case of constant power, so that current transformer access and exiting, that is, the replacement of current transformer is carried out.To avoid having a power failure also greatly alleviating user's bring economic loss the operating process for the current transformer that replacement is currently running, power supply quality is improved.
Description
Technical field
The present invention relates to electric energy metering device technical fields, charge in particular to a kind of power distribution network current transformer
More changing device.
Background technique
Currently, the electric energy metering device in power distribution network accounts for about the 90% of total electric energy metering device.The meter of electric energy metering device
Amount accuracy directly affects the fairness of distribution network electric energy trade settlement and the economic interests for electricity consumption both sides.According to country
Vertification regulation, electric energy metering device should periodically carry out error-detecting calibration, should beyond mutual inductor as defined in standard for error
It is replaced.Replacing at present to power distribution network current transformer can only be carried out by way of having a power failure according to plan, power failure operation
Application process is cumbersome, and the period is long, and site safety measure is complicated, this significantly impacts the normal production plan of user and power supply company
Economic benefit.
Power distribution network current transformer is mounted in metering cabinet, and insulation distance is short, place narrow space, existing charged for replacement
Device is taken up too much space, and structure is complicated, does not have the demand of field application.It is operated when carrying out current transformer charged for replacement
Cumbersome, step is more, easily occurrence of equipment accident and personal safety accident.And the time cycle of charged for replacement current transformer compared with
Long, advantage is unobvious compared with the replacement that has a power failure.
Summary of the invention
In consideration of it, the invention proposes a kind of power distribution network current transformer live replacing devices, it is intended to solve quickly to carry out
The problem of current transformer charged for replacement.
On one side, the invention proposes a kind of power distribution network current transformer live replacing devices, comprising: bracket, and
Positioned at same central axes and the busbar side linkage mechanism, the rotation linkage mechanism and mutual inductor side linkage mechanism that are connected, wherein institute
It states busbar side linkage mechanism and the two sides of the rotation linkage mechanism, the busbar side linkage is arranged in mutual inductor side linkage mechanism
Mechanism is connect with primary current busbar, and mutual inductor side linkage mechanism is connect with current transformer；The rotation linkage mechanism
It is rotated around the central axes, to control the current transformer access or exit primary system；Busbar side linkage mechanism and
Mutual inductor side linkage mechanism is connect with the bracket, and the bracket is also used to place the current transformer.
Further, busbar side linkage mechanism, rotation linkage mechanism and mutual inductor side linkage mechanism center run through one
Cylindrical type connection pillar, the rotation linkage mechanism are rotated around the connection pillar lateral wall, the connection pillar central axes with
Busbar side linkage mechanism, rotation linkage mechanism and mutual inductor side linkage mechanism central axes are overlapped.
Further, the rotation linkage mechanism includes the second hollow box body of cylindrical type, is plugged in second box body
The shorting conductive bar relatively disposed in parallel of interior two, being threaded through second box intracorporal two, opposite that connection is arranged in parallel is conductive
Bar, the connection pillar are threaded through on two bottom surfaces of second box body；The shorting conductive bar and connection conducting rod with it is described
The setting direction of connection pillar is identical, and alternately along the circumferentially uniform arrangement of the connection pillar；The two shorting conductive bars
Setting is shorted in the intracorporal end of second box.
Further, busbar side linkage mechanism includes the first hollow box body of cylindrical type, is arranged in first box
Intracorporal several first springs, setting are in intracorporal the first spring contact strip of two arcs of first box, and the one of the connection pillar
It holds the bottom surface across first box body side opposite with second box body, be plugged in first box body；Described
One end of one spring is connect with the first box body inner sidewall, and the other end is connect with the lateral wall of the connection pillar, each described
Circumferentially uniform arrangement of first spring along the connection pillar；Two first spring contact strips are oppositely arranged, and with described
One spring, which is connected and fixed, to be integrated, first spring contact strip simultaneously or separately with the shorting conductive bar and connect conducting rod
End contact.
Further, one first groove is arranged in the middle part of first spring contact strip, and first groove is described for making
Shorting conductive bar or the end for connecting conducting rod plug wherein.
Further, the first spring contact strip arc length institute is 120 ° to central angle, first spring contact strip center pair
Claim axis horizontal by 60 ° of angles；Two first spring contact strips respectively with the input terminal of the primary current busbar and output
End connection.
Further, mutual inductor side linkage mechanism includes the hollow third box body of cylindrical type, is arranged in the third
The intracorporal several second springs of box are arranged in the intracorporal two arcs second spring contact of the third box, the connection pillar
One end passes through the bottom surface of the third box body side opposite with second box body, is plugged in the third box body；It is described
One end of second spring is connect with the third box body inner sidewall, and the other end is connect with the lateral wall of the connection pillar, each institute
State circumferentially uniform arrangement of the second spring along the connection pillar；The two second spring contacts are oppositely arranged, and with it is described
Second spring, which is connected and fixed, to be integrated, and the second spring contact is contacted with the end of the connection conducting rod.
Further, two second grooves are provided on the second spring contact, two second grooves are uniformly arranged
Arc length institute is 90 ° to central angle between the two sides of the second spring contact axis of symmetry, two second grooves, described the
Two grooves are used to that the end of the connection conducting rod to be made to plug wherein.
Further, first spring contact strip and second spring contact are oppositely arranged, first spring contact strip and
The radius of curvature of two spring contact strips is identical with length.
Further, the shorting conductive bar and connection conducting rod are located on the edge of same circle, and the circle is with the company
The center of circle for connecing pillar is the center of circle, the coincident of first spring contact strip and second spring contact and the circle；Described first
It is the length of spring contact strip and second spring contact, long greater than the circular arc between the adjacent shorting conductive bar and connection conducting rod
Degree, and less than the arc length between the connection conducting rod of the two shorting conductive bars or two.
Further, the second spring contact arc length institute is 120 ° to central angle, second spring contact center pair
Claim axis horizontal by 90 ° of angles；The second spring contact is connect with the current transformer.
Further, it is provided with the first protrusion on the lateral wall of first box body, is set on the third box body lateral wall
It is equipped with the second protrusion, first protrusion is oppositely arranged with second protrusion；First box body and third box body pass through institute
It states first protrusion and second protrusion is connect with the bracket.
Further, first box body, the second box body, third box body and connection pillar are made of insulating material.
Further, the connection pillar is made of polytetrafluoroethylene (PTFE).
Further, it is provided with leader on the lateral wall of second box body, the handle is to drive described second
Box body rotation.
Compared with prior art, the beneficial effects of the present invention are: the present invention passes through in current transformer and a terminal
Between access live replacing device, by the cooperation of each linkage mechanism of live replacing device to realize the case where not powering off
Under, so that current transformer is accessed and exited, that is, carry out the replacement of current transformer.User's bring is passed through to avoid having a power failure
Ji loss, also greatly alleviates the operating process for the current transformer that replacement is currently running, further increases power supply quality.
Further, with it is existing replacement current transformer device compared with, using the live replacing device in the present invention into
Without carrying out cumbersome operation when the charged for replacement of row current transformer, the present apparatus only need to be when exiting current transformer by turning
Dynamic rotation linkage mechanism, and rotation rotates linkage mechanism round about again after accessing current transformer, it can be complete
At the replacement operation of current transformer, to greatly improve the replacement efficiency of current transformer.
Further, it before the band for carrying out current transformer is electrically accessed and electrification is exited, rotates short in linkage mechanism
Connecing conducting rod can be shorted current transformer in advance, and transient current is mutual to electric current when avoiding access and exiting current transformer
The impact of sensor, improves security performance.
Further, the present invention uses pure mechanic structure, has stable structure, easy to operate, easy to produce and application
Advantage.
Further, the present invention in live replacing device use cylindrical type linkage mechanism, it is compact-sized, volume compared with
It is small, there is stronger practicability.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is live replacing device overall structure figure schematic diagram provided in an embodiment of the present invention；
Fig. 2 is Charging system internal structure chart provided in an embodiment of the present invention；
Fig. 3 is busbar side linkage mechanism cross-sectional view provided in an embodiment of the present invention；
Fig. 4 is mutual inductor side linkage mechanism cross-sectional view provided in an embodiment of the present invention；
Fig. 5 is linkage mechanism section view operation schematic diagram in busbar side provided in an embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.It should be noted that in the absence of conflict, embodiment in the present invention and
Feature in embodiment can be combined with each other.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig.1, present embodiments providing a kind of distribution current transformer live replacing device structure, including bracket
9, busbar side linkage mechanism 2, rotation linkage mechanism 3 and mutual inductor side linkage mechanism 4, wherein bracket 9 is fixed on metering cabinet side wall
On, to fixed and support busbar side linkage mechanism 2, rotation linkage mechanism 3 and mutual inductor side linkage mechanism 4, and support electric current
Mutual inductor 6.Busbar side linkage mechanism 2, rotation linkage mechanism 3 and mutual inductor side linkage mechanism 4 are located at same central axes, and three
It connects side by side, it is preferred that busbar side linkage mechanism 2, the size and shape for rotating linkage mechanism 3 and mutual inductor side linkage mechanism 4
It is identical.The two sides of rotation linkage mechanism 3 and the bottom surface of three is arranged in busbar side linkage mechanism 2 and mutual inductor side linkage mechanism 4
It is separately connected.Busbar side linkage mechanism 2 is connect with primary current busbar 1, and mutual inductor side linkage mechanism 4 and current transformer 6 connect
It connects；It rotates linkage mechanism 3 to rotate around its central axes, central axes and busbar side linkage mechanism 2, rotation linkage mechanism 3 and mutual inductance
The central axes of device side linkage mechanism 4 are identical, rotate linkage mechanism 3 by rotation, so that busbar side linkage mechanism 2, rotation linkage
Mechanism 3 and 4 internal circuit of mutual inductor side linkage mechanism are shorted, thus control the access of current transformer 6 or exit primary system, with
Carry out the replacement of current transformer 6.
It is understood that accessing live replacing device between mutual inductor and a terminal, pass through live replacing device
Linkage mechanism may be implemented once do not power off in the case of current transformer access and exit.It avoids having a power failure to user's bring
Economic loss also greatly alleviates power supply company's replacement in the operating process of running current mutual inductor, powers to further increasing
Quality is of great significance.
Specifically, busbar side linkage mechanism 2 and mutual inductor side linkage mechanism 4 are connect with bracket 9, bracket 9 is also used to put
Set the current transformer 6.One sliding rail can also be set on the frame 6, on the slide rail by the setting of current transformer 6, to make
Obtaining mutual inductor can move.
Specifically, primary current busbar 1 is connect with metering cabinet primary current copper bar.
Specifically, the center of busbar side linkage mechanism 2, rotation linkage mechanism 3 and mutual inductor side linkage mechanism 4 runs through one
Cylindrical type connection pillar 10, rotation linkage mechanism 3 are rotated around 10 lateral wall of connection pillar, the central axes of connection pillar 10 and busbar
The central axes of side linkage mechanism 2, rotation linkage mechanism 3 and mutual inductor side linkage mechanism 4 are overlapped.
As shown in fig.2, specifically, rotation linkage mechanism 3 includes the second hollow box body of cylindrical type, is plugged in two boxes
Intracorporal two shorting conductive bars 32 relatively disposed in parallel are threaded through that second box intracorporal two is opposite to be arranged in parallel connection and lead
Electric pole 31.Connection pillar 10 is threaded through on two bottom surfaces of the second box body, and the center on two bottom surfaces of the second box body is opposite to open
If two through hole, so that connection pillar 10 passes through, the central axes of through-hole are overlapped with the central axes of connection pillar 10, the axis of through-hole
Line be also overlapped with the central axes of the second box body.Two bottom surfaces of the second box body can be supported and fix to connection pillar 10, together
When the second box body around connection pillar 10 rotate.
Specifically, shorting conductive bar 32 and connection conducting rod 31 are identical as the setting direction of connection pillar 10, and alternately
Circumferentially uniform along connection pillar 10 is arranged, that is, and one, which is drawn, with the center of circle of connection pillar 10 justifies, shorting conductive bar 32 and company
It connects conducting rod 31 to be alternately arranged on round edge, and shorting conductive bar 32 and connection conducting rod 31 and 10 phase of connection pillar
To being arranged in parallel, that is, two shorting conductive bars 32 and two connections are conductive with the center of circle of connection pillar 10 for one cross hairs of middle strokes and dots
Bar 31 is respectively set on a straight line of cross hairs, and shorting conductive bar 32 and connection conducting rod 31 are adjacent, and is in 90 degree of angles.
Specifically, the setting of two shorting conductive bars 32 is shorted in the intracorporal end of the second box, i.e. two shorting conductive bars 32
The inside of the second box body is arranged in one end, and is mutually shorted.
It is understood that being rotated in linkage mechanism before the band for carrying out current transformer is electrically accessed and electrification is exited
Shorting conductive bar current transformer can be shorted in advance, avoid access and when exiting current transformer transient current to electricity
The impact of current transformer, improves security performance.
In conjunction with shown in Fig. 2 and Fig. 3, specifically, busbar side linkage mechanism 2 includes the first hollow box of cylindrical type
Body, setting are in intracorporal several first springs 22 of first box, setting in intracorporal the first spring of two arcs of first box
Contact 21, one end of the connection pillar 10 pass through the bottom surface of the first box body side opposite with second box body, are plugged in
In first box body, a through-hole is offered on the bottom surface of the first box body, the one end of connection pillar 10 passes through through-hole and is plugged in first
Box body, is made up of the bottom surface of the first box body and is fixedly connected pillar 10, the first box body, the first box body through-hole and connect pillar
10 central axes are overlapped.
Specifically, one end of the first spring 22 is connect with the inner sidewall of the first box body, it is solid by welding or being bolted
Fixed, the other end is connect with the lateral wall of connection pillar 10, and by welding or being bolted fixation, each first spring 22 is along the company
The spacing connect between the circumferentially uniform arrangement and each first spring 22 of pillar is identical, each first spring 22 and connection pillar
10 perpendicular settings, and the perpendicular setting of inner sidewall of the first box body.
Specifically, two first spring contact strips 21 are oppositely arranged and the symmetrical setting of two first spring contact strip 21, and with
One spring 22, which is connected and fixed, to be integrated, and the first spring contact strip 21 is fixed as one with the first spring 22 by welding or bolt.The
One spring contact strip 21 can simultaneously with shorting conductive bar 32 and connection conducting rod 31 end contact, or respectively with shorting conductive bar
32 or connect conducting rod 31 end contact.Preferred first spring 22 is arranged 4 or 6, and quantity is not specifically limited, and only needs
It is capable of fixing the first spring contact strip 21.
Specifically, one first groove 23 is arranged in the middle part of the first spring contact strip 21, first groove 23 is for making institute
The end for stating shorting conductive bar 32 or connection conducting rod 31 plugs wherein, when shorting conductive bar 32 or connection conducting rod 31 and first
Shorting conductive bar 32 or connection conducting rod 31 are fixed and are positioned when spring contact strip 21 contacts, places rotation rotation gear
When structure 3, the case where linkage mechanism 3 slides is rotated.
Specifically, the first spring contact strip 21 is connect with the input terminal of the primary current busbar 1 and output end respectively.
In conjunction with shown in Fig. 2 and Fig. 4, specifically, mutual inductor side linkage mechanism 4 include the hollow third box body of cylindrical type,
Setting is in the intracorporal several second springs 42 of the third box, setting in the intracorporal two arcs second spring contact of the third box
41, one end of the connection pillar 10 passes through the bottom surface of the third box body side opposite with second box body, is plugged in
In the third box body, a through-hole is opened up in the middle part of the bottom surface of third box body, the end of connection pillar 10 passes through the through-hole and plugs
In third box body, pillar 10 is supported and is fixedly connected by the bottom surface of third box body, connection pillar 10, third box body and logical
The central axes in hole are overlapped.
Specifically, one end of second spring 42 is connect with the third box body inner sidewall, by welding or being bolted
Fixed, the other end is connect with the lateral wall of the connection pillar 10, by welding or being bolted fixation, each second spring
42 is identical along the circumferentially uniform arrangement of the connection pillar 10 and the spacing of each second spring 42；Each second bullet
Spring 42 respectively with the perpendicular setting of the inner sidewall of the lateral wall of connection pillar 10 and third box body.
Specifically, the two second spring contacts 41 are oppositely arranged, i.e., the two second spring contacts 41 are symmetrical arranged,
And be connected and fixed and be integrated with the second spring 42, the end of the second spring contact 41 and the connection conducting rod 31 connects
Touching.
It is understood that being filled compared with the device of existing replacement current transformer using the charged for replacement in the present invention
Without carrying out cumbersome operation when setting the charged for replacement for carrying out current transformer, the present apparatus need to only lead to when exiting current transformer
Rotation rotation linkage mechanism is crossed, and rotation rotates linkage mechanism round about again after accessing current transformer, i.e.,
The replacement operation of achievable current transformer, to greatly improve the replacement efficiency of current transformer.
Specifically, being provided with two second grooves 43 on the second spring contact 41, two second grooves are uniformly arranged
Arc length institute is 90 ° to central angle between the two sides of 41 axis of symmetry of second spring contact, two second grooves, i.e. two second grooves
Angle between 43 is to be used to that the end of the connection conducting rod 31 be made to plug wherein in 90 ° of second groove 43, to lead to connection
Electric pole 31 is fixed and positions.
Specifically, first spring contact strip 21 and second spring contact 41 are oppositely arranged, i.e. the symmetrical setting of the two,
It can contact simultaneously with connection conducting rod 31 or not contact.The curvature of first spring contact strip 21 and second spring contact 41
Radius is identical with length.
Specifically, the shorting conductive bar 32 and connection conducting rod 31 are located on the edge of same circle, circle is to connect branch
The center of circle of column 10 is the coincident of the center of circle, the first spring contact strip 21 and second spring contact 41 and circle.
Specifically, the length of the first spring contact strip 21 and second spring contact 41 is greater than the adjacent shorting conductive bar
Minimum arc length between 32 and connection conducting rod 31, and less than the two shorting conductive bar 32 or two connection conducting rods
Arc length between 31.
Specifically, second spring contact 41 is connect with the current transformer 6.
Specifically, being provided with the first protrusion 7 on the lateral wall of the first box body, second is provided on third box body lateral wall
Protrusion 8, the first protrusion 7 are oppositely arranged with second protrusion 8；First box body and third box body pass through the first protrusion 7 and described
Second protrusion 8 is connect with the bracket 9.
It is understood that the present invention uses pure mechanic structure, there is stable structure, it is easy to operate, it is easy to produce and answer
The advantages of using.Further, the present invention in live replacing device use cylindrical type linkage mechanism, it is compact-sized, volume compared with
It is small, there is stronger practicability.
Specifically, first box body, the second box body, third box body and connection pillar 10 are made of insulating material.Tool
Body, connection pillar 10 is made of polytetrafluoroethylene (PTFE).
Specifically, being provided with leader 33 on the lateral wall of the second box body, handle 33 is to drive second box body
Rotation.
Specifically, passing through poly- four among busbar side linkage mechanism 2, rotation linkage mechanism 3 and mutual inductor side linkage mechanism 4
Vinyl fluoride pillar runs through, and busbar side linkage mechanism 2, rotation linkage mechanism 3 and mutual inductor side linkage mechanism 4 are connected as one
Body.The bottom surface of busbar side linkage mechanism 2 and mutual inductor side linkage mechanism 4 is fixedly connected with polytetrafluoroethylene (PTFE) pillar.Busbar side connection
Circumferentially fixed six are equipped with along its on the lateral wall of 4 inside polytetrafluoroethylene (PTFE) pillar of motivation structure 2 and mutual inductor side linkage mechanism
Spring is fixed with metal contact piece on spring.
Specifically, busbar side linkage mechanism 2 and mutual inductor side linkage mechanism 4 are poured by polytetrafluoroethylene (PTFE) respectively
It builds, metal contact piece is arc-shaped contact, the bottom surface phase of metal contact piece and busbar side linkage mechanism 2 and mutual inductor side linkage mechanism 4
It is arranged in parallel, and the central axes of polytetrafluoroethylene (PTFE) pillar are symmetrical arranged for line of symmetry, metal contact piece has same curvature radius；
Setting is fluted in the middle part of metal contact piece；Metal contact piece inside busbar side linkage mechanism 2 passes through its bottom surface and primary output
Electric current busbar 1 connects；Metal contact piece inside mutual inductor side linkage mechanism 2 passes through its bottom surface and output end of mutual inductor
Connection.
Specifically, live replacing device be internally provided with through busbar side linkage mechanism 2, rotation linkage mechanism 3 and mutually
The metal conducting bar of 4 bottom surface of sensor side linkage mechanism has additional another between busbar side linkage mechanism 2 and rotation linkage mechanism 3
Outer two metal conducting bars, two metal conducting bars added are shorted in rotation live replacing device internal series-connection.
Specifically, being contacted to guarantee spring contact strip with the good of metal conducting bar in linkage mechanism 3 is rotated, busbar side connection
Motivation structure 2 and 4 contained spring of mutual inductor side linkage mechanism use the biggish spring of coefficient of elasticity.
Specifically, the groove diameter on spring contact strip inside busbar side linkage mechanism 2 and mutual inductor side linkage mechanism 4
It is slightly less than the diameter of metal conducting bar, under the contact pressure that spring provides, spring contact strip well contacts simultaneously with metal conducting bar
Play the role of fixed metal conducting bar when metal conducting bar remains static.
Specifically, the first spring contact strip 21 arc length institute inside busbar side linkage mechanism 2 is 120 ° to central angle, first
21 central symmetry axis of spring contact strip is horizontal by 60 ° of angles；41 arc of second spring contact inside mutual inductor side linkage mechanism 4
Long institute is also 120 ° to central angle, and 41 central symmetry axis of second spring contact is horizontal by 90 ° of angles.
Referring to figure 1 and figure 5, under current transformer 6 normally access working condition, connection conducting rod 31 passes through first
Spring contact strip 21 is connected with primary current busbar 1, and the other end is connected by connecting line 5 with current transformer 6, shorting conductive bar
32 are in an off state with the first spring contact strip 21, therefore current transformer 6 can normally access primary system.Specific electrification
It is as follows to exit process:
Step a, the handle 33 for pulling rotation linkage mechanism 3 makes to rotate the connection conducting rod 31 on linkage mechanism 3, is shorted
Conducting rod 32 is rotated along connection pillar 10, connects conducting rod 31 at this time without departing from the first spring contact strip 21, current transformer is right according to 6
Access primary system；
Step b, continue to rotate rotation linkage mechanism 3 to same direction, do not access the touching of the first spring in shorting conductive bar 32
Current transformer 6 still accesses primary system when piece 21；
Step c, when shorting conductive bar 32 accesses the first spring contact strip 21, connection conducting rod 31 does not exit the first spring also
Contact 21.Since shorting conductive bar 32 is shorted inside rotation linkage mechanism 3, current transformer 6 is shorted, but primary system
System does not disconnect；
Step d, when connecting the first spring contact strip 21 of disengaging of conducting rod 31, current transformer 6 completely disengages system.At this time
Current transformer 6 can be removed from bracket, the electrification for completing mutual inductor is exited.
When electrification is exited, connection conducting rod 31 is in second spring touching in 4 one side section of mutual inductor side linkage mechanism always
Between piece 41.During entire electrification is exited, rotation 3 movement range of linkage mechanism is smaller (being rotated by 90 °), current transformer 6
First be shorted again with primary system be detached from, can with compromise between security under the premise of maintain primary system current lead-through, realize electricity
The electrification of current transformer 6 is exited.When progress band is electrically accessed, after current transformer is accessed mutual inductor side linkage mechanism 4, negative side
Linkage mechanism 3 is rotated to rotation, current transformer 6 still accesses one when shorting conductive bar 32 does not access the first spring contact strip 21
Subsystem.
In the above-described embodiments, the Position Design and electrification of the first spring contact strip 21 and the groove on second spring contact 41
Present position is identical when the static working condition of connection conducting rod 31 or shorting conductive bar 32 in replacement process, can guarantee to connect
Conducting rod 31 or shorting conductive bar 32 have enough contacts area when accessing an electric system.And the design of groove is so that connection
Conducting rod 31 and/or shorting conductive bar 32 can not be displaced in the operating condition, guarantee the safety of live replacing device
Energy.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (15)
1. a kind of power distribution network current transformer live replacing device characterized by comprising bracket, and it is located at same axis
Line and the busbar side linkage mechanism being connected, rotation linkage mechanism and mutual inductor side linkage mechanism, wherein
The two sides of the rotation linkage mechanism, the busbar is arranged in busbar side linkage mechanism and mutual inductor side linkage mechanism
Side linkage mechanism is connect with primary current busbar, and mutual inductor side linkage mechanism is connect with current transformer；The rotation connection
Motivation structure is rotated around the central axes, to control the current transformer access or exit primary system；
Busbar side linkage mechanism and mutual inductor side linkage mechanism are connect with the bracket, and the bracket is also used to place described
Current transformer.
2. power distribution network current transformer live replacing device according to claim 1, which is characterized in that the busbar side connection
A cylindrical type connection pillar, the rotation gear are run through in motivation structure, rotation linkage mechanism and mutual inductor side linkage mechanism center
Structure is rotated around the connection pillar lateral wall, the connection pillar central axes and busbar side linkage mechanism, rotation gear
Structure and mutual inductor side linkage mechanism central axes are overlapped.
3. power distribution network current transformer live replacing device according to claim 2, which is characterized in that the rotation linkage
Mechanism includes the second hollow box body of cylindrical type, is plugged in second box intracorporal two shorting conductive relatively disposed in parallel
Bar is threaded through second box intracorporal two with respect to connection conducting rod is arranged in parallel, and the connection pillar is threaded through described second
On two bottom surfaces of box body；
The shorting conductive bar and connection conducting rod are identical as the setting direction of the connection pillar, and alternately along connection branch
The circumferentially uniform arrangement of column；
The two shorting conductive bar settings are shorted in the intracorporal end of second box.
4. power distribution network current transformer live replacing device according to claim 3, which is characterized in that the busbar side connection
Motivation structure includes the first hollow box body of cylindrical type, is arranged in intracorporal several first springs of first box, is arranged described
One end of intracorporal the first spring contact strip of two arcs of first box, the connection pillar passes through first box body and second box
The bottom surface of the opposite side of body is plugged in first box body；
One end of first spring is connect with the first box body inner sidewall, and the lateral wall of the other end and the connection pillar connects
It connects, circumferentially uniform arrangement of each first spring along the connection pillar；
Two first spring contact strips are oppositely arranged, and are connected and fixed and are integrated with first spring, the first spring touching
Piece is simultaneously or separately contacted with the end of the shorting conductive bar and connection conducting rod.
5. power distribution network current transformer live replacing device according to claim 4, which is characterized in that first spring
One first groove is arranged in the middle part of contact, and first groove is used to that the shorting conductive bar or the end of connection conducting rod to be made to insert
If wherein.
6. power distribution network current transformer live replacing device according to claim 4, which is characterized in that
First spring contact strip arc length institute is 120 ° to central angle, the first spring contact strip central symmetry axis horizontal by
60 ° of angles；
Two first spring contact strips are connect with the input terminal of the primary current busbar and output end respectively.
7. power distribution network current transformer live replacing device according to claim 4, which is characterized in that the mutual inductor side
Linkage mechanism includes the hollow third box body of cylindrical type, is arranged in the intracorporal several second springs of the third box, is arranged in institute
The intracorporal two arcs second spring contact of third box is stated, one end of the connection pillar passes through the third box body and described second
The bottom surface of the opposite side of box body is plugged in the third box body；
One end of the second spring is connect with the third box body inner sidewall, and the lateral wall of the other end and the connection pillar connects
It connects, circumferentially uniform arrangement of each second spring along the connection pillar；
The two second spring contacts are oppositely arranged, and are connected and fixed and are integrated with the second spring, the second spring touching
Piece is contacted with the end of the connection conducting rod.
8. power distribution network current transformer live replacing device according to claim 7, which is characterized in that the second spring
Two second grooves are provided on contact, two second grooves are uniformly arranged in the two of the second spring contact axis of symmetry
Side, arc length institute is 90 ° to central angle between two second grooves, and second groove is used to make the end of the connection conducting rod
Portion plugs wherein.
9. power distribution network current transformer live replacing device according to claim 7, which is characterized in that first spring
Contact and second spring contact are oppositely arranged, the radius of curvature and length phase of first spring contact strip and second spring contact
Together.
10. power distribution network current transformer live replacing device according to claim 9, which is characterized in that the short circuit is led
Electric pole and connection conducting rod are located on the edge of same circle, and the circle is using the center of circle of the connection pillar as the center of circle, and described first
The coincident of spring contact strip and second spring contact and the circle；
The length of first spring contact strip and second spring contact, greater than the adjacent shorting conductive bar and connection conducting rod
Between arc length, and less than the two shorting conductive bars or two it is described connection conducting rod between arc length.
11. power distribution network current transformer live replacing device according to claim 7, which is characterized in that
Second spring contact arc length institute is 120 ° to central angle, the second spring contact central symmetry axis horizontal by
90 ° of angles；
The second spring contact is connect with the current transformer.
12. power distribution network current transformer live replacing device according to claim 7, which is characterized in that first box
Be provided with the first protrusion on the lateral wall of body, be provided with the second protrusion on the third box body lateral wall, first protrusion with
Second protrusion is oppositely arranged；
First box body and third box body are connect by first protrusion and second protrusion with the bracket.
13. according to the described in any item power distribution network current transformer live replacing devices of claim 7-12, which is characterized in that institute
The first box body, the second box body, third box body and connection pillar is stated to be made of insulating material.
14. according to the described in any item power distribution network current transformer live replacing devices of claim 2-12, which is characterized in that institute
Connection pillar is stated to be made of polytetrafluoroethylene (PTFE).
15. according to the described in any item power distribution network current transformer live replacing devices of claim 3-12, which is characterized in that institute
It states and is provided with leader on the lateral wall of the second box body, the handle is to drive second box body to rotate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810873762.0A CN109167286B (en) | 2018-08-02 | 2018-08-02 | Live replacement device for current transformer of power distribution network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810873762.0A CN109167286B (en) | 2018-08-02 | 2018-08-02 | Live replacement device for current transformer of power distribution network |
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| CN109167286A true CN109167286A (en) | 2019-01-08 |
| CN109167286B CN109167286B (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810873762.0A Active CN109167286B (en) | 2018-08-02 | 2018-08-02 | Live replacement device for current transformer of power distribution network |
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| Country | Link |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340409A (en) * | 2017-06-09 | 2017-11-10 | 国网上海市电力公司 | A kind of fast-wiring fixture for high-voltage mutual inductor |
| CN110165593A (en) * | 2019-05-29 | 2019-08-23 | 中国电力科学研究院有限公司 | Metering cabinet Current Transformer live replacing device and method |
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| CN1512524A (en) * | 2002-12-27 | 2004-07-14 | 岷 章 | Changing current ratio of 10KV and higher high-voltage current transformer under live condition |
| JP5064293B2 (en) * | 2008-04-28 | 2012-10-31 | 株式会社三英社製作所 | Bypass cable hot-wire removal tool |
| CN106816813A (en) * | 2017-03-17 | 2017-06-09 | 中国电力科学研究院 | The method of power distribution network current transformer installing structure and charged for replacement current transformer |
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| CN1304201A (en) * | 2000-01-07 | 2001-07-18 | 三菱电机株式会社 | Switchover apparatus and method for electric source system |
| CN1512524A (en) * | 2002-12-27 | 2004-07-14 | 岷 章 | Changing current ratio of 10KV and higher high-voltage current transformer under live condition |
| JP5064293B2 (en) * | 2008-04-28 | 2012-10-31 | 株式会社三英社製作所 | Bypass cable hot-wire removal tool |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109167286B (en) | 2021-10-26 |
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