CN208060648U - A kind of line single phase grounding failure position indicator - Google Patents
A kind of line single phase grounding failure position indicator Download PDFInfo
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- CN208060648U CN208060648U CN201820570749.3U CN201820570749U CN208060648U CN 208060648 U CN208060648 U CN 208060648U CN 201820570749 U CN201820570749 U CN 201820570749U CN 208060648 U CN208060648 U CN 208060648U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
The utility model gives a kind of 0.4kV line single phase grounding failures position indicator, grade CT is measured by four and an operation result of measurement host forms, four measure grade CT and use clamp open C T, it is easily installed on four low-voltage distribution wires of measurement point, four measure the electric current that grade CT acquires four distribution wires of A phase, B phase, C phase and zero curve of three-phase electricity respectively.Using four small open C T, the problem of common split-core type meter is unable to measure large-section lead zero-sequence current can effectively solve the problem that.The earthing of low voltage line fault point can be quickly searched, first-aid repair efficiency is promoted, and overcomes the defect that four conducting wires of previous pressure common split-core type meter while folder search fault point.
Description
Technical field
The utility model is related to earth fault positioning technology fields, more particularly, to a kind of 0.4kV circuits single-phase earthing
Fault locating instrument.
Background technology
When singlephase earth fault occurs for the sides 0.4kV of public change, the neutral point excursion of low-voltage platform area causes voltage not
Surely, the problems such as zero curve charges, longtime running may cause the electrical equipment of client to burn out.Currently, when low-voltage ground occurs for taiwan area
Failure, the method that ordinary circumstance is drawn by measurement, observation, examination first, determination are the outlet hairs of which way switch control of taiwan area
Raw failure, then carries out the outlet deep fault inspection, until finding fault point.When the above method needs to expend a large amount of
Between, further encounter position of failure point it is hidden lead to not find fault point the problem of.
In the search procedure of the earthing of low voltage line failure, through measuring the zero of three-phase and four-line conducting wire frequently with clamp on amperemeter
Sequence electric current, i.e., the current phasor of 4 conducting wires and, when vector sum is not zero, then failure judgement point is located at the measurement point rear end.So
And this method has limitation, such as when the section of conducting wire is larger, a common clamp on amperemeter is difficult to clamp 4 simultaneously
Root conducting wire.In addition, on 0.4kV overhead transmission lines, it is difficult to which the position of 4 conducting wires can be clamped with common split-core type meter simultaneously by finding
It sets, to influence the efficiency of fault location.
Invention content
The utility model is the existing defect for overcoming the above-mentioned prior art, overcomes 0.4kV low-voltage ground trouble shoots
Method is relatively simple, overcomes in most taiwan areas without progress intelligent monitoring transformation, overcome can only by manual patrol,
A kind of 0.4kV line single phase grounding failure position indicators being conveniently operated are provided.
The utility model is intended to solve above-mentioned technical problem at least to a certain extent.
The primary and foremost purpose of the utility model is can quickly to search the earthing of low voltage line fault point, promotes first-aid repair efficiency；Gram
The defect that 4 conducting wires of previous pressure common split-core type meter while folder search fault point is taken；Easy to operate, a point detection job needs about
2 minutes, promote first-aid repair efficiency.
In order to reach above-mentioned technique effect, the technical solution of the utility model is as follows：
A kind of 0.4kV line single phase grounding failures position indicator, the fault locating instrument measure grade CT and 1 measurement by 4
Computing host forms.
4 measure grade CT and use clamp open C T, are easily installed on 4 low-voltage distribution wires of measurement point, 4 measurement grades
CT acquires the electric current of four distribution wires of A phase, B phase, C phase and zero curve of three-phase electricity respectively.
Operation panel is provided on operation result of measurement host, operation panel lower end is provided with and A phase, B phase, C phase and zero curve phase
Corresponding four current acquisition terminals.
The centre of operation panel is provided with earth fault LED light, is used to indicate earth fault.
Operation panel upper end is provided with LED display curtain, and display screen is for showing A phase currents, B phase currents, C phase electricity
Stream, neutral line current and earth current.
It measures the collected current datas of grade CT and is connected to corresponding four current acquisition terminals on operation result of measurement host, it will
Collected current data is transferred to operation result of measurement host, size of current of the operation result of measurement host in addition to that can collect 4 circuits
Outside, it is also equipped with the computing function for calculating 4 current phasor sums, the zero-sequence current of circuit is calculated by the method for operation.
Compared with prior art, the advantageous effect of technical solutions of the utility model is：The device uses 4 small openings
CT can effectively solve the problem that the problem of common split-core type meter is unable to measure large-section lead zero-sequence current.Low-voltage circuit can quickly be searched
Earth fault promotes first-aid repair efficiency；Overcome the defect that 4 conducting wires of previous pressure common split-core type meter while folder search fault point；
Easy to operate, a point detection job needs about 2 minutes, promotes first-aid repair efficiency.
Description of the drawings
Fig. 1 is that 0.4kV line single phase grounding failure position indicators install circuit diagram.
Fig. 2 is 0.4kV line single phase grounding failure position indicator structure charts.
Specific implementation mode
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；It is attached in order to more preferably illustrate the present embodiment
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable.
The technical solution of the utility model is described further with reference to the accompanying drawings and examples.
Embodiment 1
Referring to attached drawing 1-2, a kind of 0.4kV line single phase grounding failures position indicator, the fault locating instrument is by 4 measurement grades
CT and 1 operation result of measurement host composition.
4 measure grade CT and use clamp open C T, are easily installed on 4 low-voltage distribution wires of measurement point, 4 measurement grades
CT acquires the electric current of four distribution wires of A phase, B phase, C phase and zero curve of three-phase electricity respectively.
The collected current datas of grade CT are measured, are transferred to operation result of measurement host, operation result of measurement host is in addition to that can collect 4
Outside the size of current of circuit, it is also equipped with the computing function for calculating 4 current phasor sums, circuit is calculated by the method for operation
Zero-sequence current.
Operation panel is provided on operation result of measurement host, operation panel lower end is provided with and A phase, B phase, C phase and zero curve phase
Corresponding four current acquisition terminals.
The centre of operation panel is provided with earth fault LED light, is used to indicate earth fault.
Operation panel upper end is provided with LED display curtain, and display screen is for showing A phase currents, B phase currents, C phase electricity
Stream, neutral line current and earth current.
It measures the collected current datas of grade CT and is connected to corresponding four current acquisition terminals on operation result of measurement host, it will
Collected current data is transferred to operation result of measurement host, size of current of the operation result of measurement host in addition to that can collect 4 circuits
Outside, it is also equipped with the computing function for calculating 4 current phasor sums, the zero-sequence current of circuit is calculated by the method for operation, measures fortune
Calculate the zero sequence that host also has the calculating part for calculating four current phasors and calculates the zero-sequence current of circuit by the method for operation
Current operator portion.
Compared with prior art, the advantageous effect of technical solutions of the utility model is：The device uses 4 small openings
CT can effectively solve the problem that the problem of common split-core type meter is unable to measure large-section lead zero-sequence current.Low-voltage circuit can quickly be searched
Earth fault promotes first-aid repair efficiency；Overcome the defect that 4 conducting wires of previous pressure common split-core type meter while folder search fault point；
Easy to operate, a point detection job needs about 2 minutes, promotes first-aid repair efficiency.
The same or similar label correspond to the same or similar components；Position relationship described in attached drawing is used to be only used for showing
Example property explanation, should not be understood as the limitation to this patent；Obviously, above-described embodiment of the utility model is only clearly to say
Bright the utility model example, and it is not the restriction to the embodiment of the utility model.For the general of fields
For logical technical staff, other different forms of changes or modifications may be made based on the above description.Here it is not necessarily to
Also all embodiments can not be exhaustive.It is made within the spirit and principle of the present invention it is any modification,
Equivalent replacement and improvement etc., should be included within the utility model scope of the claims.
Claims (5)
1. a kind of line single phase grounding failure position indicator, including Earth design instrument ontology, which is characterized in that further include four
Measure grade CT and an operation result of measurement host, wherein four measure grade CT and use clamp open C T, are easily installed in measurement point
On four low-voltage distribution wires, four measure the electricity that grade CT acquires four distribution wires of A phase, B phase, C phase and zero curve of three-phase electricity respectively
Stream.
2. a kind of line single phase grounding failure position indicator as described in claim 1, wherein being arranged on the operation result of measurement host
There are operation panel, operation panel lower end to be provided with four current acquisition terminals corresponding with A phase, B phase, C phase and zero curve.
3. a kind of line single phase grounding failure position indicator as claimed in claim 2, wherein the intermediate setting of the operation panel
There is earth fault LED light, is used to indicate earth fault.
4. a kind of line single phase grounding failure position indicator as claimed in claim 2, wherein the operation panel upper end is provided with
LED display curtain, display screen is for showing A phase currents, B phase currents, C phase currents, neutral line current and earth current.
5. a kind of line single phase grounding failure position indicator as claimed in claim 2, wherein the collected electricity of the measurement grade CT
Flow data is connected to corresponding four current acquisition terminals on operation result of measurement host, and collected current data is transferred to measurement
Computing host, operation result of measurement host can collect the size of current of four circuits, and operation result of measurement host, which also has, calculates four electricity
The calculating part of flow vector and calculated by the method for operation circuit zero-sequence current zero-sequence current operational part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820570749.3U CN208060648U (en) | 2018-04-20 | 2018-04-20 | A kind of line single phase grounding failure position indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820570749.3U CN208060648U (en) | 2018-04-20 | 2018-04-20 | A kind of line single phase grounding failure position indicator |
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| Publication Number | Publication Date |
|---|---|
| CN208060648U true CN208060648U (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820570749.3U Active CN208060648U (en) | 2018-04-20 | 2018-04-20 | A kind of line single phase grounding failure position indicator |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531206A (en) * | 2019-08-27 | 2019-12-03 | 广东电网有限责任公司 | Split-phase type low-voltage ground fault detection means |
| CN112684370A (en) * | 2020-12-01 | 2021-04-20 | 广东电网有限责任公司梅州供电局 | Ground fault detector |
| CN113945859A (en) * | 2021-09-08 | 2022-01-18 | 广西电网有限责任公司防城港供电局 | CT secondary side multipoint grounding searching instrument based on current comparison method |
-
2018
- 2018-04-20 CN CN201820570749.3U patent/CN208060648U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531206A (en) * | 2019-08-27 | 2019-12-03 | 广东电网有限责任公司 | Split-phase type low-voltage ground fault detection means |
| CN112684370A (en) * | 2020-12-01 | 2021-04-20 | 广东电网有限责任公司梅州供电局 | Ground fault detector |
| CN113945859A (en) * | 2021-09-08 | 2022-01-18 | 广西电网有限责任公司防城港供电局 | CT secondary side multipoint grounding searching instrument based on current comparison method |
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