CN206863201U - A kind of transformer common test instrument comparison device for being applied to scene - Google Patents
A kind of transformer common test instrument comparison device for being applied to scene Download PDFInfo
- Publication number
- CN206863201U CN206863201U CN201720446811.3U CN201720446811U CN206863201U CN 206863201 U CN206863201 U CN 206863201U CN 201720446811 U CN201720446811 U CN 201720446811U CN 206863201 U CN206863201 U CN 206863201U
- Authority
- CN
- China
- Prior art keywords
- wiring port
- resistance
- comparing module
- transformer
- comparison device
- 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
- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 238000009413 insulation Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 7
- 238000002474 experimental method Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a kind of transformer common test instrument comparison device for being applied to scene, including the casing for integrating comparing module, it is characterized in that the comparing module includes dielectric loss measuring instrument comparing module, Insulation Resistance Tester comparing module and direct-current resistance tester for transformer comparing module.Advantage：1）The comparison device is integrated standard capacitance, resistive element, and a table apparatus can complete the comparison of the degree of accuracy of dielectric loss measuring instrument, Insulation Resistance Tester and direct-current resistance tester for transformer；2）The core parts of the comparison device are purely capacitive, resistance circuit, and reliability is high, and device overall weight is light, is easy to carry, and disclosure satisfy that the requirement of long-distance transport；3）By modes such as high and low voltage isolation and protection of arrester, the potential safety hazard of instrument is eliminated；4）Device design is simple, and low cost is practical, meets production needs, is applied at the scene, reduces the carrying quantity of reserve instruments.
Description
Technical field
A kind of transformer common test instrument comparison device for being applied to scene is the utility model is related to, more particularly to it is a kind of
Dielectric loss measuring instrument, Insulation Resistance Tester and the device of the direct-current resistance tester for transformer degree of accuracy are compared, belongs to electricity
Power applied technical field.
Background technology
Transformer is one of most important equipment in power system, and its safe and stable operation is directly connected to whole power network
Safety and reliability.And routine test is one regular " physical examination " to transformer, to judging that its operation conditions has very
Important effect.In order to efficiently, guarantee the quality completion transformer experiment, first must guarantee test instrument the degree of accuracy.At present
For testing crew when carrying out abnormal data analysis, exclusive PCR, the first step will exclude the interference of instrument, i.e., to prove instrument sheet
Body is reliable, and test data is accurate.The method that scene is typically tested, verified mutually using more instruments repeatedly at present,
To ensure the accuracy of instrument.But so, necessarily cause to carry increasing for instrument quantity, the decline of instrument utilization rate.
In order to solve the drawbacks of such, instrument is avoided the feelings damaged without knowing occur during long-distance transport, use
Condition.The utility model proposes develop a comparison device that can be used for the transformer common test instrument of field application.The device
Successful research and development can effectively solve suspection of the testing ground to instrument accuracy grade, it is ensured that test data is true and reliable.
The content of the invention
Technical problem to be solved in the utility model is the defects of overcoming prior art, there is provided one kind can be existing in experiment
The instrument that dielectric loss measuring instrument, Insulation Resistance Tester and direct-current resistance tester for transformer are compared for field.
In order to solve the above technical problems, the utility model provides a kind of transformer common test instrument ratio for being applied to scene
To device, including for integrating the casing of comparing module, it is characterized in that, the comparing module compares including dielectric loss measuring instrument
Module, Insulation Resistance Tester comparing module and direct-current resistance tester for transformer comparing module；
The dielectric loss measuring instrument comparing module includes being located at electric capacity C1, C2 in casing, switchs S1, S2, resistance R1,
R2, R3, and Wiring port A, A0, A01, A02, A03, the Ap being located on box outer surface, wherein Wiring port A pass through wire
Electric capacity C1 and electric capacity C2, electric capacity C1 tandem taps S1, electric capacity C2 tandem tap S2, switch S1 and switch S2 after series connection are met respectively
Common connecting resistance R1, resistance R2, resistance R3 one end and Wiring port A0 again, resistance R1 another termination Wiring port A01, electricity
R2 another termination Wiring port A02, resistance R3 another termination Wiring port A03 is hindered, in electric capacity C1, C2, resistance R1, R2,
R3 low pressure end cable uses shielded cable, and is connected to Wiring port Ap, and Wiring port Ap is inserted using full-shield aviation
Seat；
The Insulation Resistance Tester comparing module includes resistance R4, R5 and the R6 being located in casing, and is located at casing
Wiring port B, B1, B2 and B3 on outer surface, wherein Wiring port B1 series resistances R6, Wiring port B2 series resistances R5,
Wiring port B3 series resistances R4 is followed by Wiring port B；
The direct-current resistance tester for transformer comparing module includes resistance r1, r2, the r3 being located in casing, and is located at
Wiring port Z, Z1, Z2, Z3, P, P1, P2, P3 on box outer surface, wherein Wiring port Z, Z1, Z2, Z3 are that electric current line connects
Line end mouth, Wiring port P, P1, P2, P3 are pressure-wire Wiring port, and wherein Wiring port Z3 series resistances r1 is followed by terminals
Mouth Z, Wiring port Z2 series resistances r2 is followed by Wiring port Z, Wiring port Z1 series resistances r3 is followed by Wiring port Z, wiring
Port P3 series resistances r1 is followed by Wiring port P, Wiring port P2 series resistances r2 is followed by Wiring port P, Wiring port P1 string
Connection resistance r3 is followed by Wiring port P, and electric current line is separately connect with pressure-wire, can effectively eliminate lead error.
Further, described Wiring port A0, B1, B2, B3 are grounded after being also sequentially connected in series arrester and buzzer respectively.
Further, the dielectric loss measuring instrument comparing module, Insulation Resistance Tester comparing module and transformer are straight
Wiring port A, B of leakage resistance tester comparing module are located on casing same side as high pressure exit, remaining terminals
Mouth is located on another side as low pressure exit.
Further, the Wiring port Ap connects Cx lines as shield terminal, positive connection when testing（Low voltage experiment cable
Line）Shielding line realize that low pressure shields, be directly grounded during opposition method.
Further, the electric capacity uses standard capacitance.
Further, described resistance R1, R2, R3 use kilo-ohm level measuring resistance, and resistance R4, R5, R6 use mega-ohms mark
Quasi- resistance, resistance r1, r2, r3 use milliohm level measuring resistance.
Further, temperature and humidity monitoring system and heater, dehumidifier and air cooling system have also been installed in the casing additional,
Ensure that standard capacitance, resistance are under suitable temperature and humidity conditions during test, are further ensured that the reliability of comparison result.
The beneficial effect that the utility model is reached：
1）The comparison device is integrated standard capacitance, resistive element, a table apparatus can complete dielectric loss measuring instrument,
The comparison of the degree of accuracy of Insulation Resistance Tester and direct-current resistance tester for transformer.Meet transformer common test instrument
Comparison demand；2）The core parts of the comparison device are purely capacitive, resistance circuit, and reliability is high, and device overall weight is light, just
In carrying, the requirement of long-distance transport disclosure satisfy that；3）Associated safety factor has been taken into full account, by high and low voltage isolation and has been taken shelter from the thunder
The modes such as device protection, eliminate the potential safety hazard of instrument；4）Device design is simple, and low cost is practical, and meeting production needs
Will, it is applied at the scene, reduces the carrying quantity of reserve instruments.
Brief description of the drawings
Fig. 1 is device box schematic diagram of the present utility model.
Fig. 2-1 is the inner member wiring diagram of dielectric loss measuring instrument comparing module of the present utility model；
Fig. 2-2 is the inner member wiring diagram of Insulation Resistance Tester comparing module of the present utility model；
Fig. 2-3 is the inner member wiring diagram of direct-current resistance tester for transformer comparing module of the present utility model.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating this
The technical scheme of utility model, and the scope of protection of the utility model can not be limited with this.
As shown in figure 1, a kind of transformer common test instrument comparison device for being applied to scene, its comparing module are mainly wrapped
Include three parts：A), dielectric loss measuring instrument comparing module, corresponding to Wiring port A, A0, A01, A02, A03, Ap in figure；
B), Insulation Resistance Tester comparing module, corresponding to Wiring port B, B1, B2, B3 in figure；C), DCR of Transformer is tested
Instrument comparing module, corresponding to Wiring port Z, Z1, Z2, Z3, P, P1, P2, P3 in figure.Concrete application mode is as follows：
As shown in Fig. 2-1, dielectric loss measuring instrument comparing module, two pieces of standard capacitances are included（50pF、100pF）And with
Series connection some different resistance measuring resistances；By the access way for changing standard capacitance（Standard capacitance C1, standard capacitance C2
And two electric capacity parallel connections）To change capacitance.The resistance value connected by changing electric capacity low-pressure end, to change whole module
Dielectric loss tangent value.Pass through parameter coordination so that the dielectric loss standard value of the device is 0.3%, 0.6%, 0.9%.In order to eliminate mark
Quasi- part surface leakage, the inside modules have also installed shield terminal Ap additional, and the surface leakage of electric capacity and resistance is masked.（This
Shield terminal connects the low pressure shielding of Cx lines when positive connection is tested, and further improves and compares reliability；Reverse wiring test directly connects
Ground, play safeguard protection）.
Positive connection access medium loss measurent instrument is used between A-A0, it is possible to achieve the degree of accuracy of instrument capacitance test
Compare, and tracing to the source for standard can be realized；Positive connection access medium loss measurement is used between A-A01, A-A02, A-A03
Instrument, the degree of accuracy of dielectric loss value can be tested with the positive connection of tester；
The comparison device can also realize the comparison of dielectric loss measuring instrument opposition method test accuracy, that is, pass through high-pressure side
A pressurizes, low-pressure end（A01, A02, A03）In the mode of some independent grounding carry out the measurement of opposition method, so as to realize instrument
The comparison of device opposition method test accuracy.Opposition method is larger due to disturbing, and error is compared in practical operation suitably to relax.
In order to prevent standard capacitance from producing equipment safety because high pressure caused by breakdown or short circuit seals in low tension loop
Accident, the module have also been devised arrester and buzzer, and arrester is used to prevent overvoltage and buzzer sends alarm.
As shown in Fig. 2-2, Insulation Resistance Tester comparing module, the module is mainly made up of mega-ohms measuring resistance, is led to
Cross in B-B1, B-B2, B-B3 indirect megameter（Notice that B ports connect negative polarity high pressure）, by tester reading and measuring resistance
Resistance is compared, and realizes that instrument accuracy grade verifies.Present apparatus accepted standard resistance is 100M Ω, 1G Ω and 10G
Ω。
In order to prevent low-voltage terminal side from disconnection fault occur, the module measuring resistance low-pressure end and connect arrester and
Buzzer, play breaking protection.
As Figure 2-3, direct-current resistance tester for transformer comparing module, the module mainly have milliohm level measuring resistance group
Into by Z, P-Z1, P1, Z, P-Z2, P2, Z, P-Z3, P3 indirect instrument for measuring DC resistance（Pay attention to Z, Z1, Z2, Z3 for electricity
Streamline Wiring port, P, P1, P2, P3 are pressure-wire Wiring port, and electric current line is separately connect with pressure-wire, eliminate lead error）,
Tester reading is compared with measuring resistance resistance, realizes that instrument accuracy grade verifies.Present apparatus accepted standard resistance hinders
Value is taken as 10m Ω, 100m Ω and 1 Ω.
Also install temperature and humidity monitoring system and heater, dehumidifier and air cooling system in the casing additional, ensure test
When standard capacitance, resistance be under suitable temperature and humidity conditions, be further ensured that the reliability of comparison result.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model technical principle is not departed from, some improvement and deformation can also be made, these change
Enter and deform and also should be regarded as the scope of protection of the utility model.
Claims (7)
1. a kind of transformer common test instrument comparison device for being applied to scene, including for integrating the casing of comparing module,
It is characterized in that the comparing module includes dielectric loss measuring instrument comparing module, Insulation Resistance Tester comparing module and transformation
Device instrument for measuring DC resistance comparing module；
The dielectric loss measuring instrument comparing module includes being located at electric capacity C1, C2 in casing, switchs S1, S2, resistance R1, R2,
R3, and Wiring port A, A0, A01, A02, A03, the Ap being located on box outer surface, wherein Wiring port A pass through wire point
Electric capacity C1 and electric capacity C2 are not met, and electric capacity C1 tandem taps S1, electric capacity C2 tandem tap S2, switch S1 and switch S2 after series connection are again
Connecting resistance R1, resistance R2, resistance R3 one end and Wiring port A0, resistance R1 another termination Wiring port A01, resistance jointly
R2 another termination Wiring port A02, resistance R3 another termination Wiring port A03, in electric capacity C1, C2, resistance R1, R2, R3
Low pressure end cable use shielded cable, and be connected to Wiring port Ap, Wiring port Ap uses full-shield aviation socket；
The Insulation Resistance Tester comparing module includes resistance R4, R5 and the R6 being located in casing, and is located at casing appearance
Wiring port B, B1, B2 and B3 on face, wherein Wiring port B1 series resistances R6, Wiring port B2 series resistances R5, wiring
Port B3 series resistances R4 is followed by Wiring port B；
The direct-current resistance tester for transformer comparing module includes resistance r1, r2, the r3 being located in casing, and is located at casing
Wiring port Z, Z1, Z2, Z3, P, P1, P2, P3 on outer surface, wherein Wiring port Z, Z1, Z2, Z3 are electric current line terminals
Mouthful, Wiring port P, P1, P2, P3 are pressure-wire Wiring port, wherein Wiring port Z3 series resistances r1 be followed by Wiring port Z,
Wiring port Z2 series resistances r2 is followed by Wiring port Z, Wiring port Z1 series resistances r3 is followed by Wiring port Z, Wiring port
P3 series resistances r1 is followed by Wiring port P, Wiring port P2 series resistances r2 is followed by Wiring port P, Wiring port P1 series electricals
Resistance r3 is followed by Wiring port P, connects electric current line and is separately connect with pressure-wire, can effectively eliminate lead error.
2. a kind of transformer common test instrument comparison device for being applied to scene according to claim 1, it is characterized in that,
Described Wiring port A0, B1, B2, B3 are grounded after being also sequentially connected in series arrester and buzzer respectively.
3. a kind of transformer common test instrument comparison device for being applied to scene according to claim 1, it is characterized in that,
The dielectric loss measuring instrument comparing module, Insulation Resistance Tester comparing module and direct-current resistance tester for transformer compare mould
As high pressure exit on casing same side, remaining Wiring port is set Wiring port A, B of block as low pressure exit
On another side.
4. a kind of transformer common test instrument comparison device for being applied to scene according to claim 1, it is characterized in that,
For the Wiring port Ap as shield terminal, positive connection connects low voltage experiment cable shielding line when testing realizes that low pressure shields,
It is directly grounded during opposition method.
5. a kind of transformer common test instrument comparison device for being applied to scene according to claim 1, it is characterized in that,
The electric capacity uses standard capacitance.
6. a kind of transformer common test instrument comparison device for being applied to scene according to claim 1, it is characterized in that,
Described resistance R1, R2, R3 use kilo-ohm level measuring resistance, and resistance R4, R5, R6 use mega-ohms measuring resistance, resistance r1, r2,
R3 uses milliohm level measuring resistance.
7. a kind of transformer common test instrument comparison device for being applied to scene according to claim 1, it is characterized in that,
Also install temperature and humidity monitoring system and heater, dehumidifier and air cooling system in the casing additional, ensure standard electric during test
Appearance, resistance are under suitable temperature and humidity conditions, are further ensured that the reliability of comparison result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720446811.3U CN206863201U (en) | 2017-04-26 | 2017-04-26 | A kind of transformer common test instrument comparison device for being applied to scene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720446811.3U CN206863201U (en) | 2017-04-26 | 2017-04-26 | A kind of transformer common test instrument comparison device for being applied to scene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206863201U true CN206863201U (en) | 2018-01-09 |
Family
ID=60822780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720446811.3U Expired - Fee Related CN206863201U (en) | 2017-04-26 | 2017-04-26 | A kind of transformer common test instrument comparison device for being applied to scene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206863201U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834973A (en) * | 2020-07-30 | 2021-05-25 | 中科知影(北京)科技有限公司 | Calibration system and method for magnetometers |
| CN116087622A (en) * | 2023-04-11 | 2023-05-09 | 苏州清研精准汽车科技有限公司 | Detection accuracy prediction method, device, processing equipment and storage medium |
-
2017
- 2017-04-26 CN CN201720446811.3U patent/CN206863201U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834973A (en) * | 2020-07-30 | 2021-05-25 | 中科知影(北京)科技有限公司 | Calibration system and method for magnetometers |
| CN116087622A (en) * | 2023-04-11 | 2023-05-09 | 苏州清研精准汽车科技有限公司 | Detection accuracy prediction method, device, processing equipment and storage medium |
| CN116087622B (en) * | 2023-04-11 | 2023-09-05 | 苏州清研精准汽车科技有限公司 | Detection accuracy prediction method, device, processing equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106896300B (en) | The monitoring device of power cable connector temperature and PD parameter | |
| CN103323751B (en) | A kind of high pressure stub cable insulation terminal local discharge test device and using method | |
| CN106556753B (en) | A kind of divider fault monitoring device | |
| CN103336186A (en) | Method for testing transformer equipment without disassembling lead | |
| CN210071942U (en) | Online grounding network and online grounding resistance monitoring device | |
| CN106443144A (en) | Distributed transient overvoltage monitoring system for EHV (extra-high voltage) GIS | |
| CN106501584A (en) | Leakage Current of Zinc-oxide Lightning Arresters measuring method | |
| CN206863201U (en) | A kind of transformer common test instrument comparison device for being applied to scene | |
| CN106501568B (en) | Far-end module box body for direct-current voltage divider | |
| CN103293400B (en) | Lightning arrester DC test system | |
| CN206209040U (en) | Leakage Current of Zinc-oxide Lightning Arresters measuring system | |
| CN205429680U (en) | Cable cross -bonding case | |
| CN203350349U (en) | Transformer substation bus phase voltage off-limit alarm system | |
| CN103399192A (en) | Split type zero flux small electric current sensor for on-line monitoring and charged test of capacitive equipment | |
| CN104007354A (en) | Whole-group test circuit and method for 10 kV zinc oxide lightning arrester and cable | |
| CN206002564U (en) | A kind of dielectric loss and insulation resistance test conversion equipment and pilot system | |
| CN206023808U (en) | Ethernet electrical equipment and its protection circuit | |
| CN204789832U (en) | CVT high -voltage testing's line changing device and CVT high -voltage testing device | |
| CN103777057A (en) | True-root-mean-square capacitive current tester | |
| CN104569687B (en) | Capacitor group fault locator | |
| CN203216999U (en) | Capacitive equipment dielectric loss live line measurement sampling device | |
| CN107271775B (en) | electric power overhead line phase detection method | |
| CN108181599B (en) | Uninterrupted replacement and checking method for core-through current transformer of transformer substation direct-current system | |
| CN201378184Y (en) | Triphase four-wire system high voltage electric energy meter | |
| CN204116446U (en) | A kind of voltage for high voltage converter and frequency measuring equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210000 Suyuan Avenue, Jiangning District, Nanjing, Jiangsu Province, -5 58 Patentee after: National network Jiangsu Electric Power Co., Ltd. maintenance branch Address before: 210000 Suyuan Avenue, Jiangning District, Nanjing, Jiangsu Province, -5 58 Patentee before: State Grid Jiangsu Electric Power Company Maintenance Branch Company |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20200426 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |