CN109239442A - Split-core type meter loop switch device and split-core type meter - Google Patents
Split-core type meter loop switch device and split-core type meter Download PDFInfo
- Publication number
- CN109239442A CN109239442A CN201811330335.4A CN201811330335A CN109239442A CN 109239442 A CN109239442 A CN 109239442A CN 201811330335 A CN201811330335 A CN 201811330335A CN 109239442 A CN109239442 A CN 109239442A
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- 239000004020 conductor Substances 0.000 claims abstract description 77
- 230000007935 neutral effect Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 abstract description 13
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 210000000080 chela (arthropods) Anatomy 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- General Physics & Mathematics (AREA)
- Keying Circuit Devices (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The present invention provides a kind of split-core type meter loop switch device and split-core type meters, it is related to wireline inspection technical field, split-core type meter loop switch device provided by the invention includes switching switch, controller and switching command issuing side, controller is connected with switching command issuing side and switching switch respectively, controller is used to receive the command signal of switching command issuing side sending to switch over to connection relationship of the switching switch respectively between left conductor and right conductor, and switching switch is conductor.Switching command issuing side in split-core type meter loop switch device provided by the invention is able to pass through the controller to control switching switching with some contact and connect, without by split-core type meter from route or eminence removes manual switching circuit, the detection of easy access personnel improves detection efficiency.
Description
Technical field
The present invention relates to wireline inspection technical fields, more particularly, to a kind of split-core type meter loop switch device and split-core type meter.
Background technique
When power circuit breaks down, common method is to shake survey with megger.The result that megger shakes survey can only judge this
Whether section route is faulty, but cannot judge in which orientation.
Above-mentioned function may be implemented using two points of principles.On the line by split-core type meter suspension, it which is provided with left conductor and the right side led
Body, left conductor and right conductor can be connect with pressure regulator respectively by switching switch, applied voltage on conducting wire, surveyed with split-core type meter
The fault current size for measuring hitch point two sides, both may determine that the orientation of failure.But existing split-core type meter needs manual switching to return
Road is just capable of measuring the fault current size of hitch point two sides, and the detection of personnel not easy to overhaul influences detection efficiency.
Therefore, the split-core type meter loop switch device and split-core type meter for how providing a kind of easy access personnel detection are this field skills
One of art personnel technical problem to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of split-core type meter loop switch device and split-core type meters, without taking split-core type meter from route
Under manual switching circuit, the detection of easy access personnel, improve detection efficiency.
To achieve the above object, the present invention the following technical schemes are provided:
In a first aspect, the present invention provides a kind of split-core type meter loop switch device, including switching switch, controller and switching life
Issuing side is enabled, the controller is connected with the switching command issuing side and switching switch respectively, and the controller is used for
The command signal that the switching command issuing side issues is received to switch respectively between left conductor and right conductor to the switching
Connection relationship switch over, switching switch is conductor.
Further, the switching switch includes shell and the Switch main body being disposed in the housing.
Further, the switching command issuing side includes the timer being electrically connected with the controller.
Further, the switching command issuing side includes the remote controler being connected with the controller in a signal way..
Second aspect, the present invention also provides a kind of split-core type meters, including the split-core type meter loop switch any in first aspect
Device.
Further, the split-core type meter includes caliper, left conductor and right conductor, and the left conductor and the right conductor are all provided with
In on the caliper.
Further, the cross section of the left conductor and the right conductor is arc, and the left conductor and the right side
Conductor extends each along the extending direction of route.
Further, the split-core type meter further includes insulating bar, and the insulating bar is connect with the caliper.
Further, the switching switch is set to the insulating bar and opens close to one end of the caliper or the switching
Close with the caliper integrated setting or the switching switch respectively with the left conductor and right conductor is integrated sets
It sets.
Further, the split-core type meter includes the pressure regulator connecting with the split-core type meter loop switch device, the pressure regulator
Voltage is U, and the frequency of the pressure regulator is f, and the two meets simultaneously:
2 π fL >, 2 Ω；
U/2 π fL < 0.3mA；
Wherein, L be route on, in the voltage transformer of neutral-point solid ground, the value of any one phase inductance；Or route
On, in the voltage transformer of the grounded coil ground connection of neutral point, the sum of the value of any one phase inductance and neutral earthing compensator inductance.
Split-core type meter loop switch device and split-core type meter provided by the invention can generate it is following the utility model has the advantages that
Setting, left conductor are located at the left side of hitch point, and right conductor is located at the right side of hitch point.Split-core type meter is stated in use to return
When circuit switching device, after switching command issuing side issues switching command, controller can receive switching command and switch to switching
The connection relationship between left conductor and right conductor switches over respectively.Specifically, when controller receives the first control command
When, switching switch is connect with left conductor, while switching the connection of switch cancellation and right conductor, at this time can be to the route in left side
It is detected；When controller receive the second control command when, switching switch connect with right conductor, while switch switch cancellation and
The connection of left conductor at this time can detect the route on right side.
Switching command for compared with the existing technology, in the split-core type meter loop switch device of first aspect present invention offer
Issuing side is able to pass through the controller to control switching switching and connect with some contact, be not necessarily to split-core type meter from route or
Eminence removes manual switching circuit, and the detection of easy access personnel improves detection efficiency.
For compared with the existing technology, the split-core type meter that second aspect of the present invention provides has the pincers of first aspect present invention offer
Table loop switch device, so that all are beneficial possessed by the split-core type meter loop switch device provided with first aspect present invention
Effect.
Detailed description of the invention
It, below will be to tool in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Body embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing be some embodiments of the present invention, for those of ordinary skill in the art, what is do not made the creative labor
Under the premise of, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram for split-core type meter loop switch device that the embodiment of the present invention one provides；
Fig. 2 is a kind of structural schematic diagram of split-core type meter loop switch device provided by Embodiment 2 of the present invention；
Fig. 3 is that the voltage transformer high pressure side structure of the neutral-point solid ground of route provided in an embodiment of the present invention shows
It is intended to；
Fig. 4 is the voltage transformer high-pressure side of the grounded coil ground connection of neutral point of route provided in an embodiment of the present invention
Structural schematic diagram.
Icon: 1- switching switch；11- shell；12- Switch main body；2- controller；3- switching command issuing side；
31- timer；32- remote controler；4- caliper；5- insulating bar；The left conductor of 6-；The right conductor of 7-；8- pressure regulator；In 9-
Property point；10- test point.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described reality
Applying example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to what the present invention protected
Range.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for the description present invention and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " the
Two ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can be understood with concrete condition above-mentioned
The concrete meaning of term in the present invention.
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1 is a kind of structural schematic diagram for split-core type meter loop switch device that the embodiment of the present invention one provides；Fig. 2 is this hair
A kind of structural schematic diagram for split-core type meter loop switch device that bright embodiment two provides；Fig. 3 is route provided in an embodiment of the present invention
Neutral-point solid ground voltage transformer high-pressure side structural schematic diagram；Fig. 4 is in route provided in an embodiment of the present invention
Property point grounded coil ground connection the on high-tension side structural schematic diagram of voltage transformer.
The embodiment of first aspect present invention provides a kind of split-core type meter loop switch device, as shown in Fig. 1 to Fig. 3, including cuts
Switch 1, controller 2 and switching command issuing side 3 are changed, controller 2 connects with switching command issuing side 3 and switching switch 1 respectively
Connect, controller 2 be used for receive switching command issuing side 3 sending command signal with to switching switch 1 respectively with left conductor 6 and
Connection relationship between right conductor 7 switches over, and switching switch 1 is conductor.
Setting, left conductor are located at the left side of hitch point, and right conductor is located at the right side of hitch point.Split-core type meter is stated in use to return
When circuit switching device, after switching command issuing side issues switching command, controller can receive switching command and switch to switching
The connection relationship between left conductor and right conductor switches over respectively.Specifically, when controller receives the first control command
When, switching switch is connect with left conductor, while switching the connection of switch cancellation and right conductor, at this time can be to the route on right side
It is detected；When controller receive the second control command when, switching switch connect with right conductor, while switch switch cancellation and
The connection of left conductor at this time can detect the route in left side.
For compared with the existing technology, in the split-core type meter loop switch device that the embodiment of first aspect present invention provides
Switching command issuing side is able to pass through the controller to control switching switching and connect with some contact, be not necessarily to by split-core type meter from
On route or eminence removes manual switching circuit, and the detection of easy access personnel improves detection efficiency.
Specifically, controller 2 can use the single-chip microcontroller of model 89C52.
In some embodiments, in order to enable the structure of above-mentioned switching switch 1 is more simple, switching switch 1 includes shell
Body 11 and the Switch main body 12 in shell 11.
It is different according to the structure of switching command issuing side 3, it can specifically be divided into following two embodiment:
Embodiment one:
In the present embodiment one, switching command issuing side 3 includes the timer 31 being electrically connected with controller 2.Timer can
To be set up directly in shell 11, when being detected to the circuit on the left of hitch point or to the circuit on the right side of hitch point, meter
When device start timing, when the time reaching the preset threshold value of timer, timer issues switching command, controller to controller 2
2, which receive control switching switch 1 after switching command, switches over, and realizes to circuit on the left of hitch point and hitch point right side circuit
Detection.It should be noted that timer and controller can also be replaced by other structures, such as single-chip microcontroller.
Embodiment two:
In the present embodiment two, switching command issuing side 3 includes the remote controler 32 connecting with 2 signal of controller.Remote controler
There is switching push button on 32, when service personnel needs to switch route, switching push button can be pressed, remote controler is sent out to controller 2
Switching command out, control switching switch 1 switches over after controller 2 receives switching command, realizes to circuit on the left of hitch point
With the detection of circuit on the right side of hitch point.
The embodiment of second aspect of the present invention provides a kind of split-core type meter, the split-core type meter that the embodiment of second aspect of the present invention provides
Including above-mentioned split-core type meter loop switch device.
The split-core type meter loop switch dress that the split-core type meter that second aspect of the present invention provides has the embodiment of first aspect present invention to provide
It sets, thus all beneficial effects possessed by the split-core type meter loop switch device that the embodiment with first aspect present invention provides.
In some embodiments, in order to facilitate the suspension of split-core type meter, split-core type meter includes caliper 4, left conductor 6 and right conductor 7, a left side
Conductor 6 and right conductor 7 are set on caliper 4.
In some embodiments, the cross section of left conductor 6 and right conductor 7 is arc, and left conductor 6 and right conductor 7 are equal
Extend along the extending direction of route.
In at least one embodiment, the cross section of left conductor 6 and right conductor 7 is arc-shaped.
Specifically, shaking is generated when hanging on conducting wire in order to avoid split-core type meter, influences to measure, development length can for 1cm,
2cm, 3cm, 4cm etc..Development length can be the longer lengths such as 5cm, 10cm, 15cm, 20cm.
On the basis of the above embodiments, split-core type meter further includes insulating bar 5, and insulating bar 5 is connect with caliper 4, when in use,
Insulating bar 5 can be held to hang caliper to route, enable left conductor 6 and right conductor 7 and wiring circuit contact.
In some embodiments, switching switch 1 is set to insulating bar 5 close to one end of caliper 4, or switching switch 1 and pincers
4 integrated setting of body, or switching switch 1 respectively with 7 integrated setting of left conductor 6 and right conductor.
In at least one embodiment, switching switch 1 can be set to one end on insulating bar 5 close to caliper 4, and switching is opened
Closing can be connected between 1 and left conductor 6 and right conductor 7 by conducting wire.
In further embodiments, switching switch 1 can be with 4 integrated setting of caliper.The integrated setting refers to, cuts
The inside that switch 1 is set to caliper 4 is changed, the shell of caliper 4 is the shell 11 for switching switch 1, switching switch 1 and pincers at this time
The processing, production jointly of body 4, not needing individually will be on the switching external left conductor 6 and right conductor 7 on caliper 4 of switch 1.
In some other embodiments, switching switch 1 can also be with 7 integrated setting of left conductor 6 and right conductor.This one
Bodyization, which is arranged, to be referred to, the connection status for switching direct switching and left conductor 6 and right conductor 7 each time of switching switch 1, two
It does not need to be attached by conducting wire between person.
It is specifically described by taking Fig. 1 as an example, the direction towards Fig. 1, the left side of caliper 4 respectively has a side, wherein left
Conductor 6 is connect with the left side of caliper 4, and right conductor 7 is connect with the right side of caliper 4.
Specifically, split-core type meter includes the pressure regulator 8 connecting with split-core type meter loop switch device, and the voltage of pressure regulator 8 is U, pressure regulation
The frequency of device 8 is f, and the two meets simultaneously:
2 π fL >, 2 Ω；
U/2 π fL < 0.3mA；
Wherein, L be route on, in the voltage transformer that neutral point 9 is directly grounded, the value of any one phase inductance, i.e. Fig. 3
The value of middle A phase, B phase or C phase any one inductance；Or on route, in the voltage transformer of the grounded coil of neutral point 9 ground connection,
The sum of the value of any one phase inductance and neutral earthing compensator inductance, i.e. A phase, B phase or C phase any one and neutral earthing compensator electricity in Fig. 4
The sum of sense.Wherein, Ω and mA is unit.
As shown in figure 4, the point that test point 10 is contacted by route with left conductor 6 or right conductor 7.
Specifically when in use, split-core type meter loop switch device is electrically connected with pressure regulator 8,8 working earthing of pressure regulator.Pressure regulator 8
Voltage is added on route two sides respectively by switching circuit, is measured by electric current of the split-core type meter to two circuits, by two electric currents
Size compare i.e. knowable which side route be faulty line.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；
Although present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its
It is still possible to modify the technical solutions described in the foregoing embodiments, or special to some or all of technologies
Sign is equivalently replaced；And these are modified or replaceed, the present invention that it does not separate the essence of the corresponding technical solution is each to be implemented
The range of example technical solution.
Claims (10)
1. a kind of split-core type meter loop switch device, which is characterized in that issued including switching switch (1), controller (2) and switching command
It holds (3), the controller (2) connect with the switching command issuing side (3) and switching switch (1) respectively, the control
Device (2) is used to receive the command signal that the switching command issuing side (3) issues to lead respectively to a left side to switching switch (1)
Connection relationship between body (6) and right conductor (7) switches over, and the switching switch (1) is conductor.
2. split-core type meter loop switch device according to claim 1, which is characterized in that the switching switch (1) includes shell
(11) and be set to the shell (11) in Switch main body (12).
3. split-core type meter loop switch device according to claim 2, which is characterized in that switching command issuing side (3) packet
Include the timer (31) being electrically connected with the controller (2).
4. split-core type meter loop switch device according to claim 1, which is characterized in that switching command issuing side (3) packet
Include the remote controler (32) connecting with the controller (2) signal.
5. a kind of split-core type meter, which is characterized in that including split-core type meter loop switch device according to any one of claims 1-4.
6. split-core type meter according to claim 5, which is characterized in that the split-core type meter includes that caliper (4), left conductor (6) and the right side are led
Body (7), the left conductor (6) and the right conductor (7) are set on the caliper (4).
7. split-core type meter according to claim 6, which is characterized in that the cross section of the left conductor (6) and the right conductor (7)
It is arc, and the left conductor (6) and the right conductor (7) extend each along the extending direction of route.
8. split-core type meter according to claim 6, which is characterized in that the split-core type meter further includes insulating bar (5), the insulating bar
(5) it is connect with the caliper (4).
9. split-core type meter according to claim 8, which is characterized in that it is close that the switching switch (1) is set to the insulating bar (5)
Perhaps the switching switch (1) and the caliper (4) integrated setting or the switching switch for one end of the caliper (4)
(1) respectively with the left conductor (6) and the right conductor (7) integrated setting.
10. split-core type meter according to claim 6, which is characterized in that the split-core type meter includes and the split-core type meter loop switch device
The pressure regulator (8) of connection, the voltage of the pressure regulator (8) are U, and the frequency of the pressure regulator (8) is f, and the two meets simultaneously:
2 π fL >, 2 Ω；
U/2 π fL < 0.3mA；
Wherein, L be route on, in the voltage transformer that neutral point (9) is directly grounded, the value of any one phase inductance；Or on route,
In the voltage transformer of the grounded coil ground connection of neutral point (9), the sum of the value of any one phase inductance and neutral earthing compensator inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811330335.4A CN109239442B (en) | 2018-11-08 | 2018-11-08 | Clamp meter loop switching device and clamp meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811330335.4A CN109239442B (en) | 2018-11-08 | 2018-11-08 | Clamp meter loop switching device and clamp meter |
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| Publication Number | Publication Date |
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| CN109239442A true CN109239442A (en) | 2019-01-18 |
| CN109239442B CN109239442B (en) | 2024-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811330335.4A Active CN109239442B (en) | 2018-11-08 | 2018-11-08 | Clamp meter loop switching device and clamp meter |
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| 罗显泉: "基于二分比较法的架空线路故障判断原理及其应用", 电工技术, no. 4, pages 115 - 118 * |
| 黄强 等: "五次谐波法对单相接地故障的定位", 科技咨询导报, no. 30, pages 65 - 66 * |
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| CN109239442B (en) | 2024-08-02 |
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