CN208984791U - A kind of electric-power metering fault detection means - Google Patents
A kind of electric-power metering fault detection means Download PDFInfo
- Publication number
- CN208984791U CN208984791U CN201821634287.3U CN201821634287U CN208984791U CN 208984791 U CN208984791 U CN 208984791U CN 201821634287 U CN201821634287 U CN 201821634287U CN 208984791 U CN208984791 U CN 208984791U
- Authority
- CN
- China
- Prior art keywords
- phase power
- power amplifier
- operational amplifier
- dual operational
- electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 52
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 238000004891 communication Methods 0.000 claims abstract description 14
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 230000009977 dual effect Effects 0.000 claims description 30
- 239000003990 capacitor Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 230000035772 mutation Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000012956 testing procedure Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses a kind of electric-power metering fault detection means, including detection shell and acquisition testing system, the upper surface of the detection shell is fixedly installed with insulation board, the top of the insulation board is provided with multiple groups jointing, the lower part of the detection shell is provided with support frame, signal source is fixedly installed on the inner wall of the detection shell, the top of the signal source is provided with serial server, the left end of the serial server, which is run through, is connected with A phase power amplifier, B phase power amplifier and C phase power amplifier, the A phase power amplifier, the top of B phase power amplifier and C phase power amplifier is provided with communication a-b box, the communication a-b box is internally provided with meter-copy device, the switching interface of the communication a-b box is connected with acquisition testing system by controlling route, improve electric-power metering collector Detection efficiency, promote collector detection technique upgrading, have good promotion prospect and application value.
Description
Technical field
The utility model relates to electric power metering device technical field, in particular to a kind of electric-power metering fault detection means.
Background technique
Electric energy meter and the extensive practical operation in China of low voltage current transformer automatic detection system, are compared
Traditional artificial calibrating mode, reduces testing person, improves calibrating efficiency.And in the electric-power metering detection of II type collector
Field, because of the factors such as its is small in size, positioning is difficult, connector lug is not fixed, at present at home still by the way of artificial detection.
Currently, II type collector of the electric-power metering that need to be detected every year is more than 2,000,000, need to put into a large amount of manpower and
Equipment, working efficiency are low.In order to improve detection efficiency, reduces man power and material and be badly in need of studying electric-power metering with II type collector certainly
Dynamic detection technique passes through currently, external be also at space state to the case study of the technology without referential mature and reliable
It tests.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of electric-power metering fault detection means, improve kilowatt meter
The amount detection efficiency of collector promotes the upgrading of collector detection technique, has good promotion prospect and application value, this
Sample can effectively solve the problems in background technique.
In order to solve the above-mentioned technical problem, the technical solution of the utility model are as follows: a kind of electric-power metering fault detection means,
Including detection shell and acquisition testing system, the upper surface of the detection shell is fixedly installed with insulation board, the insulation board
Top is provided with multiple groups jointing, and the lower part of the detection shell is provided with support frame, consolidates on the inner wall of the detection shell
Dingan County is equipped with signal source, and the top of the signal source is provided with serial server, and the left end of the serial server is through connection
There are A phase power amplifier, B phase power amplifier and C phase power amplifier, the A phase power amplifier, B phase power amplifier
It is fixedly mounted on C phase power amplifier on the inner wall for stating detection shell, the A phase power amplifier, B phase power amplifier
The top of C phase power amplifier is provided with communication a-b box, the meter-copy device that is internally provided with for communicating a-b box is described logical
Believe that the switching interface of a-b box is connected with acquisition testing system by controlling route, the acquisition testing system includes master control core
The signal end of piece, the first dual operational amplifier and the second dual operational amplifier, the main control chip passes through first resistor and first
Dual operational amplifier is connected, and the signal end of the main control chip is connected by control line with the second dual operational amplifier in-phase end
It connects.
As the utility model a preferred technical solution, the in-phase end of first dual operational amplifier is separately connected
There are a second resistance and 3rd resistor, the power other end of the second resistance is connected with signal input line, and the two of the 3rd resistor
Hold and be connected to first capacitor, the other end of the 3rd resistor and first capacitor is directly grounded, first dual operational amplifier
Reverse side is directly grounded by the 4th resistance.
As the utility model a preferred technical solution, the power end of first dual operational amplifier is directly connected to
There is power supply, the power end of first dual operational amplifier also passes through the second capacitor and is directly grounded.
As the utility model a preferred technical solution, the other end of the first resistor passes through third capacitive feedback
It is connected to the control terminal of main control chip.
As the utility model a preferred technical solution, the control terminal of the main control chip is also connected with the 5th electricity
Resistance, the reverse side of second dual operational amplifier are directly shorted with output end, the output end of second dual operational amplifier
It is also connected with voltage-stablizer, the output end of second dual operational amplifier is also connected with output signal line.
By adopting the above technical scheme, it is improved by the back board structure to detection shell, increases carapace length, using beating
Mode of the hole in conjunction with partitioning slot breaks disconnected extension part to facilitate, and guarantees that fracture is neat, it is actually detected in, main website according to
The messaging parameter of the collector of acquisition, to the copy controller that matches with its carrier module carry out it is automatic search and connect, then into
Row communication test and existing artificial lookup enormously simplify testing procedure, improve detection efficiency, and keep away compared with connection
Exempt to pull due to the adverse effect caused by stabilization of equipment performance route when replacing copy controller, has improved electric-power metering acquisition
The detection efficiency of device promotes the upgrading of collector detection technique, has good promotion prospect and application value.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model acquisition testing system circuit diagram；
In figure, 1- detects shell；2- insulation board；3- jointing；4- serial server；5- support frame；6- signal source；7-
C phase power amplifier；8-B phase power amplifier；9-A phase power amplifier；10- communicates a-b box；11- meter-copy device；12- acquisition
Detection system.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, technical characteristic involved in the various embodiments of the present invention described below is as long as they do not conflict with each other
It can be combined with each other.
Fig. 1 and Fig. 2 are please referred to, the utility model provides a kind of technical solution: a kind of electric-power metering fault detection means, packet
Detection shell 1 and acquisition testing system 12 are included, the upper surface of the detection shell 1 is fixedly installed with insulation board 2, the insulation board
2 top is provided with multiple groups jointing 3, and the lower part of the detection shell 1 is provided with support frame 5, described to detect the interior of shell 1
Signal source 6 is fixedly installed on wall, the top of the signal source 6 is provided with serial server 4, a left side for the serial server 4
End, which is run through, is connected with A phase power amplifier 9, B phase power amplifier 8 and C phase power amplifier 7, the A phase power amplifier 9,
B phase power amplifier 8 and C phase power amplifier 7 are fixedly mounted on the inner wall for stating detection shell 1, the A phase power amplification
The top of device 9, B phase power amplifier 8 and C phase power amplifier 7 is provided with communication a-b box 10, the communication a-b box 10
It is internally provided with meter-copy device 11, the switching interface of the communication a-b box 10 is connected with acquisition testing system by controlling route
12, the acquisition testing system 12 includes main control chip U1, the first dual operational amplifier A1 and the second dual operational amplifier A2, institute
The signal end for stating main control chip U1 is connected by first resistor R1 with the first dual operational amplifier A1, the main control chip U1's
Signal end is connected by control line with the second dual operational amplifier A2 in-phase end.
In the present embodiment, to detection shell 1 back board structure improve, increase carapace length, design coiling column and
Flexible circuit conductor is wrapped on coiling column by firm banking, and connection plug-in unit is fixed on the base, and Origuchi is adopted between backboard and extension
With mode of the punching in conjunction with partitioning slot, disconnected extension part is broken to facilitate, and guarantee that fracture is neat.
In the present embodiment, change the back board structure of detection shell 1, does not change internal component layout, do not influence electrical resistance
Can, when site operation, backboard extension is broken disconnected, and connection plug-in unit is detached from from backboard extension together with flexible circuit conductor, not shadow
Scene attaching work is rung, plug-in unit is connected and flexible circuit conductor is fixed, do not influenced, effectively improved by flexible circuit conductor in automatic detection process
Detection success rate and reliability.
In the present embodiment, jointing 3 is designed to connect the crimp type terminal taken out stitches automatically, crimping end of probe is designed to
" fillet type ", so that have certain guiding when insertion collector, probe easily enters collector, and with binding post contact surface
Greatly, terminal uniform force improves the stability for connecing and taking out stitches.
The in-phase end of the first dual operational amplifier A1 is connected separately with second resistance R2 and 3rd resistor R3, and described
The power other end of two resistance R2 is connected with signal input line Input, and the both ends of the 3rd resistor R3 are simultaneously connected to first capacitor C1,
The other end of the 3rd resistor R3 and first capacitor C1 is directly grounded GND, and the first dual operational amplifier A1 reverse side is logical
It crosses the 4th resistance R4 and is directly grounded GND, the power end of the first dual operational amplifier A1 has been directly connected to power supply VCC, described
The power end of first dual operational amplifier A1 also passes through the second capacitor C2 and is directly grounded GND, the other end of the first resistor R1
By the control terminal of third capacitor C3 feedback link to main control chip U1, the control terminal of the main control chip U1 is also connected with the 5th
Resistance R5, the reverse side of the second dual operational amplifier A2 are directly shorted with output end, the second dual operational amplifier A2
Output end be also connected with voltage-stablizer D, the output end of the second dual operational amplifier A2 is also connected with output signal line
Output。
In the present embodiment, acquisition testing system 12 passes through related resistance in parallel on corresponding reactor coil and two poles
Pipe is rationally arranged the function of the cutting conducting of coil, makes diode that all high pressures by electromagnetic releasing can be absorbed, and removal is corresponding
Switching arc situation, and induction coil completes the acquisition process task of alternating current then by this stage, by current rectification with
Afterwards, it will form the output situation of the identical direct current of two-way, and as current break measurement function module, current break measured
For functional module, then refer to be failure terms under mutation current situation, when forming two-phase or three-phase shortcircuit
When fault condition, many mutation currents will be formed, the mesh based on raising in the accuracy of fault detection under mutation current situation
, rectification processing should be carried out to mutation current, after finishing, different nthdifferential circuits can be made to be improved, corresponding arteries and veins is generated
Signal is rushed, diode is directed to, during forming mutation current, is needed using low electric frequency voltage to failure terms point
Position give localization process, complete the task of detection, power-off measurement function module is applied to be made of diode and resistance
Circuit starts to detect related fault point, alert process functional module in the case where on overhead transmission line there is no by electric current
The alarm and reminding effect for playing the fault data information formed for failure terms point position, in the way of light flash,
The certain enlightenment of inspection staff is brought to help.
In the present embodiment, detection device is mainly by signal source 6, three phase power amplifier, communication a-b box 10, serial port service
The composition such as device 4 is, it can be achieved that 120 II type collectors on-line checking simultaneously, wherein signal, 6 and 3 groups of power amplifiers of A phase, B phase, C phase make
For voltage source, every group of power amplifier is 40 II type collector power supplies；A plurality of types of copy controllers 11 are installed in communication a-b box 10, with
Collector is communicated；Serial server 4 and is handed down to copy controller 11 for receiving main website instruction, it is actually detected in, main website root
According to the messaging parameter of the collector of acquisition, the copy controller 11 to match with its carrier module search and connect automatically, after
And communication test and existing artificial lookup are carried out compared with connection, testing procedure is enormously simplified, detection efficiency is improved,
And it avoids and route is pullled due to the adverse effect caused by stabilization of equipment performance when replacing copy controller 11.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall in the protection scope of the utility model.
Claims (5)
1. a kind of electric-power metering fault detection means, including detection shell (1) and acquisition testing system (12), it is characterised in that:
The upper surface of detection shell (1) is fixedly installed with insulation board (2), and the top of the insulation board (2) is provided with multiple groups connection
The lower part of connector (3), detection shell (1) is provided with support frame (5), is fixedly mounted on the inner wall of detection shell (1)
Have signal source (6), the top of the signal source (6) is provided with serial server (4), and the left end of the serial server (4) is passed through
It wears and is connected with A phase power amplifier (9), B phase power amplifier (8) and C phase power amplifier (7), the A phase power amplifier
(9), B phase power amplifier (8) and C phase power amplifier (7) are fixedly mounted on the inner wall for stating detection shell (1), the A
The top of phase power amplifier (9), B phase power amplifier (8) and C phase power amplifier (7) is provided with communication a-b box (10),
Communication a-b box (10) is internally provided with meter-copy device (11), and the switching interface of communication a-b box (10) passes through control
Connection has acquisition testing system (12), and the acquisition testing system (12) includes that main control chip (U1), first pair of operation are put
The signal end of big device (A1) and the second dual operational amplifier (A2), the main control chip (U1) passes through first resistor (R1) and first
Dual operational amplifier (A1) is connected, and the signal end of the main control chip (U1) passes through control line and the second dual operational amplifier
(A2) in-phase end is connected.
2. a kind of electric-power metering fault detection means according to claim 1, it is characterised in that: first pair of operation is put
The in-phase end of big device (A1) is connected separately with second resistance (R2) and 3rd resistor (R3), and the power of the second resistance (R2) is another
End is connected with signal input line (Input), and the both ends of the 3rd resistor (R3) are simultaneously connected to first capacitor (C1), the third electricity
The other end of resistance (R3) and first capacitor (C1) is directly grounded (GND), and the first dual operational amplifier (A1) reverse side passes through
4th resistance (R4) is directly grounded (GND).
3. a kind of electric-power metering fault detection means according to claim 1, it is characterised in that: first pair of operation is put
The power end of big device (A1) has been directly connected to power supply (VCC), and the power end of first dual operational amplifier (A1) also passes through the
Two capacitors (C2) are directly grounded (GND).
4. a kind of electric-power metering fault detection means according to claim 1, it is characterised in that: the first resistor (R1)
The other end by third capacitor (C3) feedback link to main control chip (U1) control terminal.
5. a kind of electric-power metering fault detection means according to claim 1, it is characterised in that: the main control chip (U1)
Control terminal be also connected with the 5th resistance (R5), the reverse side and output end of second dual operational amplifier (A2) are directly short
It connects, the output end of second dual operational amplifier (A2) is also connected with voltage-stablizer (D), second dual operational amplifier (A2)
Output end be also connected with output signal line (Output).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821634287.3U CN208984791U (en) | 2018-10-09 | 2018-10-09 | A kind of electric-power metering fault detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821634287.3U CN208984791U (en) | 2018-10-09 | 2018-10-09 | A kind of electric-power metering fault detection means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208984791U true CN208984791U (en) | 2019-06-14 |
Family
ID=66786871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821634287.3U Expired - Fee Related CN208984791U (en) | 2018-10-09 | 2018-10-09 | A kind of electric-power metering fault detection means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208984791U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462194A (en) * | 2020-11-09 | 2021-03-09 | 国网山东省电力公司东平县供电公司 | Fault finding device and method for distribution line |
-
2018
- 2018-10-09 CN CN201821634287.3U patent/CN208984791U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462194A (en) * | 2020-11-09 | 2021-03-09 | 国网山东省电力公司东平县供电公司 | Fault finding device and method for distribution line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103604998A (en) | Method for measuring electric conduction loop resistance of circuit breaker | |
| CN204116589U (en) | A kind of current transformer for metering secondary circuit failure pick-up unit | |
| CN203909204U (en) | Cable intelligent alignment device | |
| CN104597352A (en) | Power quality monitoring system | |
| CN103018599A (en) | Method for three-phase detection of errors of three-phase electronic transformer of gas insulated switchgear (GIS) | |
| CN105548814A (en) | Method and system for determining ground fault of distribution network line | |
| CN104880652A (en) | Electrified partial discharge test system of switch cabinet and voltage signal extraction device thereof | |
| CN108562860A (en) | Electric energy meter two-way accessory power supply power consumption Auto-Test System and test method | |
| CN208984791U (en) | A kind of electric-power metering fault detection means | |
| CN103675535A (en) | High-tension transmission line power frequency parameter testing and testing connection switching integrated device | |
| CN202402198U (en) | Ignition energy detection device for magneto | |
| CN207730890U (en) | Integrated detection device for medium loss and partial discharge of wind driven generator | |
| CN204613345U (en) | A kind of recognition device of cable fault | |
| CN202066935U (en) | Dual-sensor orientation coupling anti-interference based cable partial discharge detection device | |
| CN205176195U (en) | Insulating status monitoring device of cable jacket | |
| CN204560009U (en) | Printed circuit board measuring point draws keyset | |
| CN110196383A (en) | The method for carrying out ipsilateral high-tension apparatus Partial Discharge Detection using capacitive bottom shielding of bushing | |
| CN103018702A (en) | Fast checking method of high-voltage cabinet current transformer secondary loop line | |
| CN203630241U (en) | All-in-one device for testing power frequency parameters and switching test line for high-voltage power transmission line | |
| CN203216999U (en) | Capacitive equipment dielectric loss live line measurement sampling device | |
| CN103339807B (en) | Power distributor and power measurement method | |
| LIANG et al. | Research on setting method of time domain distance protection | |
| CN103592561B (en) | Secondary wiring of current mutual inductor testing fixture | |
| CN209486160U (en) | The voltage sampling circuit of intelligent breaker | |
| CN203673009U (en) | Detector for wheel-hub connector wire harness of wind generating set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190614 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |