CN205787084U - Great current mutual inductor automatic calibrator - Google Patents
Great current mutual inductor automatic calibrator Download PDFInfo
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- CN205787084U CN205787084U CN201620673001.7U CN201620673001U CN205787084U CN 205787084 U CN205787084 U CN 205787084U CN 201620673001 U CN201620673001 U CN 201620673001U CN 205787084 U CN205787084 U CN 205787084U
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- 239000003990 capacitor Substances 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
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- 238000012795 verification Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Abstract
This utility model relates to a kind of great current mutual inductor automatic calibrator, pressure regulator, current lifting device, standard current transformer, switch controller, secondary connection control module, current transformer calibrator, control computer and current capacity case.The great current mutual inductor automatic calibrator that this utility model provides, achieve great current mutual inductor calibration equipment integrated, and all energy automatic connections of the primary circuit of this device and secondary circuit, the automatic Verification of tested current transformer can also be completed, improve safety and the calibrating efficiency of detecting current transformer work.
Description
Technical field
This utility model relates to Electric Measurement Technology field, is specifically related to a kind of great current mutual inductor automatic calibrator.
Background technology
Great current mutual inductor is mainly used in energy metering, and electric current maximum can reach the training of a little Wan An, and its accuracy is straight
Connect and be related to the justice of metering, the just and economic benefit of electric power enterprise.
At present, great current mutual inductor calibration operation is mainly carried out according to JJG1021-2007 vertification regulation, calibration equipment
Including manual voltage regulator, capacitor compensation cabinet, current lifting device, standard current transformer, tested transformer, current capacity case and electric current
Mutual-inductor tester, each equipment is scattered, is not an organic whole, and experimentation needs wiring manually to carry out respectively
The test of code point, automaticity is low, and safety is low.
Utility model content
The purpose of this utility model is to provide a kind of great current mutual inductor automatic calibrator, and this device can realize big electricity
The automatic Verification of current transformer, improves calibration operation efficiency and safety.
For solving above-mentioned technical problem, a kind of great current mutual inductor automatic calibrator disclosed in this utility model, its bag
Include pressure regulator, current lifting device, standard current transformer, switch controller, secondary connection control module, current transformer calibrator,
Controlling computer and current capacity case, wherein, the primary of described pressure regulator connects alternating current power supply, and the secondary of pressure regulator connects up-flow
The primary of device, the one end of one end connection standard current transformer primary that current lifting device is secondary, the other end connection that current lifting device is secondary
One end of wire link block, the other end of wire link block connects one end that tested current transformer is primary, tested electric current
The other end that the other end connection standard current transformer of transformer primary is primary, the control signal input of wire link block
The control signal outfan of connecting valve controller, one end of tested secondary transformer is by secondary connection control module even
Connecing one end of current capacity case, the other end of current capacity case connects the tested binding post of secondary of current transformer calibrator
TX, the other end of tested secondary transformer connects the difference stream of current transformer calibrator by secondary connection control module
Road signal flows into terminal K, and standard current transformer secondary one end connects the other end of tested secondary transformer, normalized current
The other end of transformer secondary connects the secondary standard binding post of current transformer calibrator by secondary connection control module
T0, the difference stream tributary signal of current transformer calibrator flows out terminal D and connects the earth terminal of current transformer calibrator, controls meter
The control signal input of the switch controlling signal outfan connecting valve controller of calculation machine, current transformer calibrator specified
Load parameter outfan connects the rated load parameter input of current capacity case, and the pressure regulator of current transformer calibrator controls
Signal output part connects the control signal input of pressure regulator.
The great current mutual inductor automatic calibrator that this utility model provides, it is achieved that great current mutual inductor calibration equipment collection
Become, and all energy automatic connections of the primary circuit of this device and secondary circuit, moreover it is possible to complete the automatic inspection of tested current transformer
Fixed, improve safety and the calibrating efficiency of detecting current transformer work.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Wherein, 1 pressure regulator, 2 capacitor compensation cabinets, 3 current lifting devices, 4 current capacity casees, 5 normalized current mutual inductances
Device, 6 switch controllers, 7 secondary connection control modules, 8 current transformer calibrators, 9 control computers, 10 lead
Line link block, 11 tested current transformers.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
This utility model great current mutual inductor automatic calibrator, it includes pressure regulator 1, current lifting device 3, normalized current mutual inductance
Device 5, switch controller 6, secondary connection control module 7, current transformer calibrator 8, control computer 9 and current capacity case 4,
Wherein, the primary of described pressure regulator 1 connects alternating current power supply, the secondary primary connecting current lifting device 3 of pressure regulator 1,3 levels of current lifting device
One end of one end connection standard current transformer 5 primary, the other end of 3 levels of current lifting device connects the one of wire link block 10
End, (tested current transformer 11 is identical in one end of the other end tested current transformer 11 primary of connection of wire link block 10
The terminal of no-load voltage ratio), the other end of other end connection standard current transformer 5 primary of tested current transformer 11 primary, wire
The control signal outfan of the control signal input connecting valve controller 6 of link block 10, tested current transformer 11 times
One end of level connects one end of current capacity case 4 by secondary connection control module 7, and the other end of current capacity case 4 connects electricity
The secondary tested binding post TX of current transformer tester 8, the other end of tested 11 levels of current transformer passes through secondary connection
Control module 7 connects the difference stream tributary signal of current transformer calibrator 8 and flows into terminal K, 5 level one end of standard current transformer
Connecting the other end of tested 11 levels of current transformer, the other end of 5 levels of standard current transformer is controlled by secondary connection
Module 7 connects the secondary standard binding post T0 of current transformer calibrator 8, the difference stream branch road letter of current transformer calibrator 8
Number flow out terminal D connect current transformer calibrator 8 earth terminal, control computer 9 switch controlling signal outfan connect
The control signal input of switch controller 6, the rated load parameter output of current transformer calibrator 8 connects current capacity
The rated load parameter input of case 4, the pressure regulator control signal outfan of current transformer calibrator 8 connects pressure regulator 1
Control signal input.
In technique scheme, wire link block 10 facilitates wire during primary connection to stretch.Secondary connection controls mould
Block 7 realizes second loop return wiring and automatically switches.
In technique scheme, the ct calibrating no-load voltage ratio switch-over control signal output of described current transformer calibrator 8
The ct calibrating no-load voltage ratio switch-over control signal input of end connecting secondary wiring control module 7.
In technique scheme, it also includes capacitor compensation cabinet 2, and (capacitor compensation cabinet 2 is for the idle merit in complementation test loop
Rate, thus reduce surge capacity), the first binding post of capacitor compensation cabinet 2 connects one end of 1 level of pressure regulator, and electric capacity is mended
The second binding post repaying cabinet 2 connects the other end of 1 level of pressure regulator, the power factor (PF) outfan of current transformer calibrator 8
Connect the power factor (PF) input of capacitor compensation cabinet 2.
In technique scheme, the parameter of described control computer 9 arranges communication ends and connects current transformer calibrator 8
Parameter arranges communication ends.
In technique scheme, the primary of described pressure regulator 1 connects 380V alternating current power supply.
A kind of automatic Verification method utilizing above-mentioned great current mutual inductor automatic calibrator, it comprises the steps:
Step 1: open the switch of current transformer calibrator 8；
Step 2: operate switch controller 6 pilot link block 10 by control computer 9 and close；
Step 3: primary current parameter, secondary electricity are set in controlling computer 9 according to tested current transformer 11 nameplate
Stream parameter, rated load parameter, lower limit load parameter, class of accuracy parameter and power factor parameter；
Step 4: control computer 9 by by above-mentioned primary current parameter, secondary current parameter, rated load parameter, under
Limited load parameter, class of accuracy parameter and power factor parameter are delivered to current transformer calibrator 8；
Step 5: power factor (PF) parameter is transferred to capacitor compensation cabinet 2, capacitor compensation cabinet 2 by current transformer calibrator 8
According to the power factor (PF) state modulator calibrating power loop factor obtained；
Step 6: rated load parameter is transmitted to current capacity case 4,4, current capacity case by current transformer calibrator 8
According to the rated load parameter obtained, calibrating loop load parameter is set；
Step 7: current transformer calibrator 8 control pressure regulator 1 rise successively flow to JJG1021-2007 " electric power mutual-inductor examine
Set pattern journey " the following rated current percentage ratio 1%, 5%, 20%, 100% and 120% that specifies, current transformer calibrator 8 from
The error amount of the above each rated current percentage ratio of dynamic record, and the rated current percentage error value of record is transmitted to controlling meter
Calculation machine 9；
Step 8: current transformer calibrator 8 controls pressure regulator 1 will examine and determine the near 0V of loop voltage；
Step 9: lower limit load parameter is delivered to current capacity case 4 by current transformer calibrator 8, by current capacity case
4 arrange calibrating loop lower limit load parameter；
Step 10: repeat step 7 and step 8；
Step 11: control computer 9 and automatically generate probation redport；
Step 12: control computer 9 operates switch controller 6 pilot link block 10 and disconnects；
Step 13: take out tested current transformer 11, complete certificate test；
Step 14: close current transformer calibrator 8.
This utility model can realize the automatic Verification of great current mutual inductor, improves calibration operation efficiency and safety.
The content that this specification is not described in detail belongs to prior art known to professional and technical personnel in the field.
Claims (5)
1. a great current mutual inductor automatic calibrator, it is characterised in that: it includes pressure regulator (1), current lifting device (3), standard
Current transformer (5), switch controller (6), secondary connection control module (7), current transformer calibrator (8), control calculate
Machine (9) and current capacity case (4), wherein, the primary of described pressure regulator (1) connects alternating current power supply, the secondary connection of pressure regulator (1)
The primary of current lifting device (3), the one end of one end connection standard current transformer (5) primary that current lifting device (3) is secondary, current lifting device (3)
The secondary other end connects one end of wire link block (10), and it is mutual that the other end of wire link block (10) connects tested electric current
One end that sensor (11) is primary, other end connection standard current transformer (5) primary that tested current transformer (11) is primary
The other end, the control signal outfan of control signal input connecting valve controller (6) of wire link block (10), tested
One end of current transformer (11) secondary connects one end of current capacity case (4) by secondary connection control module (7), and electric current is born
The other end of lotus case (4) connects the secondary tested binding post TX of current transformer calibrator (8), tested current transformer (11)
The difference stream tributary signal that the secondary other end connects current transformer calibrator (8) by secondary connection control module (7) flows into
Terminal K, the secondary one end of standard current transformer (5) connects the other end that tested current transformer (11) is secondary, and normalized current is mutual
The secondary standard that the other end of sensor (5) secondary connects current transformer calibrator (8) by secondary connection control module (7) connects
Line terminals T0, the difference stream tributary signal of current transformer calibrator (8) flows out terminal D and connects current transformer calibrator (8)
Earth terminal, controls the control signal input of switch controlling signal outfan connecting valve controller (6) of computer (9), electricity
The rated load parameter output of current transformer tester (8) connects the rated load parameter input of current capacity case (4), electricity
The pressure regulator control signal outfan of current transformer tester (8) connects the control signal input of pressure regulator (1).
Great current mutual inductor automatic calibrator the most according to claim 1, it is characterised in that: described current transformer school
Test the ct calibrating of ct calibrating no-load voltage ratio switch-over control signal outfan connecting secondary wiring control module (7) of instrument (8)
No-load voltage ratio switch-over control signal input.
Great current mutual inductor automatic calibrator the most according to claim 1, it is characterised in that: it also includes capacitance compensation
Cabinet (2), the first binding post of capacitor compensation cabinet (2) connects one end that pressure regulator (1) is secondary, the second of capacitor compensation cabinet (2)
Binding post connects the other end that pressure regulator (1) is secondary, and the power factor (PF) outfan of current transformer calibrator (8) connects electric capacity
The power factor (PF) input of compensating cabinet (2).
Great current mutual inductor automatic calibrator the most according to claim 1, it is characterised in that: described control computer
(9) parameter arranges the parameter of communication ends connection current transformer calibrator (8) and arranges communication ends.
Great current mutual inductor automatic calibrator the most according to claim 1, it is characterised in that: described pressure regulator (1)
Primary connection 380V alternating current power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620673001.7U CN205787084U (en) | 2016-06-29 | 2016-06-29 | Great current mutual inductor automatic calibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620673001.7U CN205787084U (en) | 2016-06-29 | 2016-06-29 | Great current mutual inductor automatic calibrator |
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| CN205787084U true CN205787084U (en) | 2016-12-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105929354A (en) * | 2016-06-29 | 2016-09-07 | 国家电网公司 | Automatic calibrating device and method for large current transformer |
| CN107957569A (en) * | 2017-11-27 | 2018-04-24 | 国网福建省电力有限公司 | A kind of building block system experimental rig for field calibration GIS formula current transformers |
| CN109407034A (en) * | 2018-12-12 | 2019-03-01 | 云南电网有限责任公司昆明供电局 | A kind of synchronization of great current mutual inductor first and second termination |
| CN111289938A (en) * | 2020-03-12 | 2020-06-16 | 国网山东省电力公司电力科学研究院 | Current transformer error calibration equipment |
| CN112858989A (en) * | 2021-03-30 | 2021-05-28 | 云南电网有限责任公司电力科学研究院 | Current transformer calibration system |
-
2016
- 2016-06-29 CN CN201620673001.7U patent/CN205787084U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105929354A (en) * | 2016-06-29 | 2016-09-07 | 国家电网公司 | Automatic calibrating device and method for large current transformer |
| CN105929354B (en) * | 2016-06-29 | 2018-10-16 | 国家电网公司 | Great current mutual inductor automatic calibrator and method |
| CN107957569A (en) * | 2017-11-27 | 2018-04-24 | 国网福建省电力有限公司 | A kind of building block system experimental rig for field calibration GIS formula current transformers |
| CN109407034A (en) * | 2018-12-12 | 2019-03-01 | 云南电网有限责任公司昆明供电局 | A kind of synchronization of great current mutual inductor first and second termination |
| CN109407034B (en) * | 2018-12-12 | 2023-09-08 | 云南电网有限责任公司昆明供电局 | Primary and secondary synchronous wiring device of large-current transformer |
| CN111289938A (en) * | 2020-03-12 | 2020-06-16 | 国网山东省电力公司电力科学研究院 | Current transformer error calibration equipment |
| CN111289938B (en) * | 2020-03-12 | 2022-02-08 | 国网山东省电力公司营销服务中心(计量中心) | Current transformer error calibration equipment |
| CN112858989A (en) * | 2021-03-30 | 2021-05-28 | 云南电网有限责任公司电力科学研究院 | Current transformer calibration system |
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