CN208984668U - A kind of novel cable fault detector control panel - Google Patents
A kind of novel cable fault detector control panel Download PDFInfo
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- CN208984668U CN208984668U CN201821524824.9U CN201821524824U CN208984668U CN 208984668 U CN208984668 U CN 208984668U CN 201821524824 U CN201821524824 U CN 201821524824U CN 208984668 U CN208984668 U CN 208984668U
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Abstract
The utility model relates to a kind of control panels, more specifically, it is related to a kind of novel cable fault detector control panel, including CPU module, converter, photoelectrical coupler, current transformer, voltage transformer, memory and RS485 module, memory are electrically connected with CPU module；RS485 module is electrically connected with CPU module；One end of converter is electrically connected with CPU, and the other end is electrically connected with photoelectrical coupler；Photoelectrical coupler is electrically connected by voltage transformer with voltage collection circuit, and photoelectrical coupler also passes through current transformer and is electrically connected with current collection circuit；It further include power module, power module is electrically connected with CPU, for providing power supply to above equipment.Analog acquisition and fault distinguishing are arranged in fault detector control panel the utility model, all to add quarantine measures with external interface loop, can effectively promote the action accuracy of fault detector.Fault detector increases recording function, is conducive to the analysis and positioning of failure.
Description
Technical field
The utility model relates to a kind of control panels, more particularly, to a kind of novel cable fault detector control plane
Plate.
Background technique
With the iterative method of intelligent power distribution network construction, it is ensured that power distribution network operational safety shortens the fault outage time, improves
Power supply reliability is by extensive concern.Distribution automation is that power distribution network realizes automatic fault isolation, fault self-recovery or fault location
Effective measures, important terminal device of the fault detector as distribution automation, it is small in size with its, price is low, it is easy for installation,
Without adjusting, maintenance is small the features such as be widely used in current power distribution network.
Conventional failure indicator control panel fault-free judgement unit only plays display.Fault distinguishing setting is sensing
On device, the acquisition of electric current can not differentiate three-phase current, zero-sequence current and network voltage without quarantine measures simultaneously, so as to cause
Fault detector false positive signal when power grid operates normally, and the case where fault detector fails to report signal when electric network fault, make former
Barrier indicator loses the meaning of its script.
Utility model content
The utility model in order to overcome at least one of the drawbacks of the prior art described above, provides a kind of novel cable failure and refers to
Show device control panel, can effectively acquire line current, voltage data, and the data of acquisition are uploaded to center processor.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of novel cable fault detector
Control panel, including CPU module, converter, photoelectrical coupler, current transformer, voltage transformer, memory and
RS485 module, the memory are electrically connected with CPU module；The RS485 module is electrically connected with CPU module；The AD
One end of converter is electrically connected with CPU, and the other end is electrically connected with photoelectrical coupler；The photoelectrical coupler passes through mutual induction of voltage
Device is electrically connected with voltage collection circuit, and the photoelectrical coupler also passes through current transformer and is electrically connected with current collection circuit；
It further include power module, power module is electrically connected with CPU, for providing power supply to above equipment.In the present invention, novel
Cable fault indicator control panel uses 32 bit CPUs, and 12 bit A/D converters have arithmetic speed fast, the high spy of sampling precision
Point；The fault detector has Current Voltage acquisition circuit, can acquire route three-phase current, zero-sequence current, line voltage distribution and band
The output switch parameter of electric display, external interface all use high frequency transformer, mutual inductor or photoelectrical coupler to be isolated,
Using the compound criterion of Current Voltage, stable equipment operation is reliable, and fault distinguishing is accurate, and has RS485 communication and failure wave-recording
Function.
Analog acquisition and fault distinguishing are arranged in fault detector control panel the utility model, it is all with it is external
Interface loop add quarantine measures, can effectively promote the action accuracy of fault detector.Fault detector increases recording function
Can, be conducive to the analysis and positioning of failure.
Further, the current collection circuit includes A phase current sample circuit, B phase current sample circuit, C phase electricity
Flow sample circuit and zero-sequence current sample circuit.
Further, the A phase current sample circuit, B phase current sample circuit, C phase current sample circuit and zero
The circuit structure of sequence current sampling circuit is identical, include resistance R1, resistance R2, resistance R3, capacitor C1, capacitor C2, capacitor C3,
Capacitor C4；No. 4 lines of current transformer are electrically connected with one end of resistance R1, and No. 3 of the other end of resistance R1 and current transformer
Line electrical connection；No. 3 lines of current transformer are electrically connected after connecting with resistance R1 with resistance R2, the other end and resistance R3 of resistance R2
The other end of electrical connection, resistance R3 is electrically connected respectively at capacitor C3, capacitor C4, the other end ground connection of capacitor C3 and capacitor C4；Electricity
The one end for holding C1 is electrically connected between resistance R1 and resistance R2, other end ground connection；One end of capacitor C2 be electrically connected to resistance R2 and
Between resistance R3, other end ground connection.
Further, indicator light is additionally provided on control panel, the indicator light is electrically connected with CPU.Indicator light is set, when
It when control panel breaks down, can be shown by indicator light, remind staff.
Further, the memory includes FLASH, RAM and EEPROM.Pass through current collection circuit and voltage acquisition
The collected current and voltage data of circuit saves in memory, is arranged in addition, operator can also order some instructions
It is stored in reservoir after good, control panel is controlled by the program of setting.
Compared with prior art, beneficial effect is:
1. using 32 bit CPUs, 12 bit A/D converters, arithmetic speed is fast, and sampling precision is high；
2. having Current Voltage acquisition circuit that the accuracy of device action can be improved using the compound criterion of Current Voltage；
3. external interface all uses high frequency transformer, mutual inductor or photoelectrical coupler to be isolated, equipment is anti-interference
Performance is strong, stable and reliable operation；
4. having the function of failure logging and failure wave-recording, facilitate accident analysis.
Detailed description of the invention
Fig. 1 is the utility model control panel overall structure diagram.
Fig. 2 is the utility model current collection circuit structural schematic diagram.
Specific embodiment
Attached drawing only for illustration, should not be understood as limiting the present invention；In order to more preferably illustrate this implementation
Example, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；For those skilled in the art
For, the omitting of some known structures and their instructions in the attached drawings are understandable.Positional relationship is described in attached drawing to be only used for
Exemplary illustration should not be understood as limiting the present invention.
As shown in Figure 1, a kind of novel cable fault detector control panel, including CPU module, converter, photoelectricity coupling
Clutch, current transformer, voltage transformer, memory and RS485 module, memory are electrically connected with CPU module；RS485 mould
Block is electrically connected with CPU module；One end of converter is electrically connected with CPU, and the other end is electrically connected with photoelectrical coupler；Photoelectric coupling
Device is electrically connected by voltage transformer with voltage collection circuit, and photoelectrical coupler also passes through current transformer and current collection circuit
Electrical connection；It further include power module, power module is electrically connected with CPU, for providing power supply to above equipment.In the utility model
In, novel cable fault detector control panel uses 32 bit CPUs, and 12 bit A/D converters have arithmetic speed fast, sampling precision
High feature；The fault detector has Current Voltage acquisition circuit, can acquire route three-phase current, zero-sequence current, line electricity
Pressure and electrification display output switch parameter, external interface all use high frequency transformer, mutual inductor or photoelectrical coupler into
Row isolation, using the compound criterion of Current Voltage, stable equipment operation is reliable, and fault distinguishing is accurate, and has RS485 communication and event
Hinder recording function.
Analog acquisition and fault distinguishing are arranged in fault detector control panel the utility model, it is all with it is external
Interface loop add quarantine measures, can effectively promote the action accuracy of fault detector.Fault detector increases recording function
Can, be conducive to the analysis and positioning of failure.
As shown in Fig. 2, specifically, current collection circuit includes A phase current sample circuit, B phase current sample circuit, C phase
Current sampling circuit and zero-sequence current sample circuit.A phase current sample circuit, B phase current sample circuit, the sampling of C phase current
The circuit structure of circuit and zero-sequence current sample circuit is identical, includes resistance R1, resistance R2, resistance R3, capacitor C1, capacitor
C2, capacitor C3, capacitor C4；No. 4 lines of current transformer are electrically connected with one end of resistance R1, and the other end and electric current of resistance R1 is mutual
No. 3 lines of sensor are electrically connected；No. 3 lines of current transformer are electrically connected after connecting with resistance R1 with resistance R2, and resistance R2's is another
End is electrically connected with resistance R3, and respectively at capacitor C3, capacitor C4 electrical connection, capacitor C3 and capacitor C4's is another for the other end of resistance R3
End ground connection；One end of capacitor C1 is electrically connected between resistance R1 and resistance R2, other end ground connection；One end of capacitor C2 is electrically connected to
Between resistance R2 and resistance R3, other end ground connection.
In addition, being additionally provided with indicator light on control panel, indicator light is electrically connected with CPU.Indicator light is set, when control panel goes out
It when existing failure, can be shown by indicator light, remind staff.
In some embodiments, memory includes FLASH, RAM and EEPROM.Pass through current collection circuit and voltage acquisition
The collected current and voltage data of circuit saves in memory, is arranged in addition, operator can also order some instructions
It is stored in reservoir after good, control panel is controlled by the program of setting.
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model claims.
Claims (5)
1. a kind of novel cable fault detector control panel, which is characterized in that including CPU module, converter, photoelectric coupling
Device, current transformer, voltage transformer, memory and RS485 module, the memory are electrically connected with CPU module；It is described
RS485 module be electrically connected with CPU module；One end of the converter is electrically connected with CPU, the other end and photoelectrical coupler
Electrical connection；The photoelectrical coupler is electrically connected by voltage transformer with voltage collection circuit, and the photoelectrical coupler is also
It is electrically connected by current transformer with current collection circuit；It further include power module, power module is electrically connected with CPU, for giving
Above equipment provides power supply.
2. a kind of novel cable fault detector control panel according to claim 1, which is characterized in that the electric current
Acquisition Circuit includes A phase current sample circuit, B phase current sample circuit, C phase current sample circuit and zero-sequence current sampling electricity
Road.
3. a kind of novel cable fault detector control panel according to claim 2, which is characterized in that the A phase
The circuit structure phase of current sampling circuit, B phase current sample circuit, C phase current sample circuit and zero-sequence current sample circuit
It together, include resistance R1, resistance R2, resistance R3, capacitor C1, capacitor C2, capacitor C3, capacitor C4；No. 4 lines of current transformer with
One end of resistance R1 is electrically connected, and the other end of resistance R1 is electrically connected with No. 3 lines of current transformer；No. 3 lines of current transformer
It is electrically connected after being connect with resistance R1 with resistance R2, the other end of resistance R2 is electrically connected with resistance R3, the other end difference of resistance R3
It is electrically connected in capacitor C3, capacitor C4, the other end ground connection of capacitor C3 and capacitor C4；One end of capacitor C1 be electrically connected to resistance R1 and
Between resistance R2, other end ground connection；One end of capacitor C2 is electrically connected between resistance R2 and resistance R3, other end ground connection.
4. a kind of novel cable fault detector control panel according to claim 2, which is characterized in that on control panel
It is additionally provided with indicator light, the indicator light is electrically connected with CPU.
5. a kind of novel cable fault detector control panel according to claim 2 or 4, which is characterized in that described
Memory includes FLASH, RAM and EEPROM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821524824.9U CN208984668U (en) | 2018-09-18 | 2018-09-18 | A kind of novel cable fault detector control panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821524824.9U CN208984668U (en) | 2018-09-18 | 2018-09-18 | A kind of novel cable fault detector control panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208984668U true CN208984668U (en) | 2019-06-14 |
Family
ID=66784577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821524824.9U Active CN208984668U (en) | 2018-09-18 | 2018-09-18 | A kind of novel cable fault detector control panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208984668U (en) |
-
2018
- 2018-09-18 CN CN201821524824.9U patent/CN208984668U/en active Active
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