CN203069773U - Onsite accuracy-calibrating system for 750kV voltage transformer - Google Patents
Onsite accuracy-calibrating system for 750kV voltage transformer Download PDFInfo
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- CN203069773U CN203069773U CN 201320087185 CN201320087185U CN203069773U CN 203069773 U CN203069773 U CN 203069773U CN 201320087185 CN201320087185 CN 201320087185 CN 201320087185 U CN201320087185 U CN 201320087185U CN 203069773 U CN203069773 U CN 203069773U
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Abstract
The utility model provides an onsite accuracy-calibrating system for a 750kV voltage transformer. The onsite accuracy-calibrating system for the 750kV voltage transformer includes a power-frequency resonant power source based on SF6 insulation, a remote control unit, a cascade standard mutual inductor and a mutual inductor accuracy calibrator. The power-frequency resonant power source based on SF6 insulation is in bidirectional electric connection with the remote control unit. The remote control unit is in bidirectional electric connection with the mutual inductor accuracy calibrator. The power-frequency resonant power source based on SF6 insulation is connected with the to-be-detected voltage transformer electrically. The to-be-detected voltage transformer is connected with the mutual inductor accuracy calibrator electrically. The power-frequency resonant power source is connected with the cascade standard mutual inductor electrically. The cascade standard mutual inductor is connected with the mutual inductor accuracy calibrator electrically. The onsite accuracy-calibrating system for the 750kV voltage transformer provided by the utility model is simple in structure. Since the power-frequency resonant power source adopts an SF6 insulation design, the size and the weight of the whole onsite accuracy-calibrating system for the 750kV voltage transformer are reduced by 40 percents, and all components can be fixed in a container and complicated connection and suspension installation can be saved. The operation is safe and easy.
Description
Technical field
The utility model relates to the on-the-spot accuracy check system of a kind of 750kV voltage transformer (VT).
Background technology
The site test of mutual inductor (comprising electromagnetic type and electronic type) need be carried numerous instrument and equipments with calibrating according to way in the past, and test is prepared, the instrument configuration time and effort consuming, and is very inconvenient.Along with the development of extra-high voltage and intelligent grid, it is more and more frequent that electronic mutual inductor uses, but the long-time stability of electronic mutual inductor are still waiting the checking of time, during just need to strengthen detecting and verification.
There is following defective in existing voltage transformer (VT): 1, adaptive faculty is poor, can not satisfy the test of traditional experiment and novel electromagnetic simultaneously; 2, the on-the-spot accuracy verification of existing voltage transformer (VT) is bulky, and floor area is big, transportation inconvenience; 3, complicated operation, test is wasted time and energy.
The utility model content
The technical problems to be solved in the utility model is at the defective that prior art exists, to provide a kind of 750kV voltage transformer (VT) easy and simple to handle, time saving and energy saving, high efficiency on-the-spot accuracy check system.
The technical scheme that its technical matters that solves the utility model adopts is, the on-the-spot accuracy check system of a kind of 750kV voltage transformer (VT), comprise the industrial frequency resonance power supply based on the SF6 insulation, remote control unit, tandem formula standard mutual inductor and accuracy of instrument transformers tester, industrial frequency resonance power supply based on the SF6 insulation is electrically connected with remote control unit is two-way, remote control unit is electrically connected with the accuracy of instrument transformers tester is two-way, industrial frequency resonance power supply based on the SF6 insulation is electrically connected with tested voltage transformer (VT), tested voltage transformer (VT) is electrically connected with the accuracy of instrument transformers tester, industrial frequency resonance power supply based on the SF6 insulation is electrically connected with tandem formula standard mutual inductor, and tandem formula standard mutual inductor is electrically connected with the accuracy of instrument transformers tester.
Further, described industrial frequency resonance power supply based on the SF6 insulation is made up of pressure regulator, step-up transformer and air gap REgulatable reactor, and pressure regulator, step-up transformer and air gap REgulatable reactor are electrically connected successively, and the air gap REgulatable reactor adopts the SF6 insulation.
Further, described remote control unit is made up of wireless remote control box and printer.
Further, described tested voltage transformer (VT) can be electromagnetic potential transformer, capacitance type potential transformer or photo-electricity mutual-inductor.
Further, the insulation mode of described tandem formula standard mutual inductor adopts the sulfur hexafluoride gas-insulating of Chinese DianKeYuan development, and the insulating sleeve of mutual inductor adopts silicone rubber sleeve; Only use the single-unit insulating sleeve to can be used as the standard potential transformer of 330kV and the following electric pressure of 330kV; The series connection of two-stage insulating sleeve is used, and can be used as the standard potential transformer of 750kV and the following electric pressure of 750kV.
The utility model can be vehicle-mounted, and each building block can be installed in the container, realized miniaturization main equipment structure.
The utility model is simple in structure, because the industrial frequency resonance power supply has adopted the design of SF6 insulation insulation, has made the volume of total system and weight reduction percent 40, each parts can be fixed in the container, during on-the-spot the use, no longer need complicated wiring and lifting, handling safety is simple and easy; Can light, simple, fast realization electronic mutual inductor site test/check by the wireless remote control box.Use the utility model, can finish accuracy verification under the power frequency of electromagnetic potential transformer, capacitance type potential transformer, photo-electricity mutual-inductor of 750kV and the following electric pressure of 750kV.
Description of drawings
Fig. 1 is the utility model one specific embodiment structured flowchart;
Fig. 2 is the structured flowchart of the industrial frequency resonance power supply based on SF6 insulation embodiment illustrated in fig. 1.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
With reference to Fig. 1, present embodiment comprises the industrial frequency resonance power supply 1 based on the SF6 insulation, remote control unit 2, tandem formula standard mutual inductor 4 and accuracy of instrument transformers tester 5, industrial frequency resonance power supply 1 and remote control unit 2 two-way electrical connections based on the SF6 insulation, remote control unit 2 and accuracy of instrument transformers tester 5 two-way electrical connections, industrial frequency resonance power supply 1 based on the SF6 insulation is electrically connected with tested voltage transformer (VT) 3, tested voltage transformer (VT) 3 is electrically connected with accuracy of instrument transformers tester 5, industrial frequency resonance power supply 1 based on the SF6 insulation is electrically connected with tandem formula standard mutual inductor 4, and tandem formula standard mutual inductor 4 is electrically connected with accuracy of instrument transformers tester 5.
With reference to Fig. 2, described industrial frequency resonance power supply 1 based on the SF6 insulation is made up of pressure regulator 11, step-up transformer 12 and air gap REgulatable reactor 13, pressure regulator 11, step-up transformer 12 and air gap REgulatable reactor 13 are electrically connected successively, and air gap REgulatable reactor 13 adopts the SF6 insulation.
Described remote control unit 2 is made up of wireless remote control box and printer.
Described tested voltage transformer (VT) 3 can be electromagnetic potential transformer, capacitance type potential transformer or photo-electricity mutual-inductor, and electric pressure can be 750kV, 500kV, 330kV, 220kV, 110kV, and electric capacity can be 1000pF ~ 20000 pF.
The insulation mode of described tandem formula standard mutual inductor 4 adopts the sulfur hexafluoride gas-insulating of Chinese DianKeYuan development, and the insulating sleeve of mutual inductor adopts silicone rubber sleeve; Only use the single-unit insulating sleeve to can be used as the standard potential transformer of 330kV and the following electric pressure of 330kV; The series connection of two-stage insulating sleeve is used, and can be used as the standard potential transformer of 750kV and the following electric pressure of 750kV.
The utility model can be vehicle-mounted, and each building block can be installed in the container.
Principle of work: the pressure regulator 11 that the civil power of three-phase 380V is inserted industrial frequency resonance power supply 1, by sending into step-up transformer 12 behind the pressure regulator 11, send into the low pressure end of air gap REgulatable reactor 13 after by step-up transformer 12 voltage being risen to certain amplitude, and then send into tested voltage transformer (VT) 3 and tandem formula standard mutual inductor 4 simultaneously; Because the inductance of air gap REgulatable reactor 13 becomes series resonant tank with the capacitance group of tested voltage transformer (VT) 3 and tandem formula standard mutual inductor 4, can realize resonance under the power frequency by the inductance value of regulating air gap REgulatable reactor 13, thereby reach the purpose of resonance step-up, make tested voltage transformer (VT) 3 and tandem formula standard mutual inductor 4 obtain needed high tension voltage simultaneously; The voltage signal that tested voltage transformer (VT) 3 and tandem formula standard mutual inductor 4 will measure respectively separately, send into accuracy of instrument transformers tester 5 simultaneously, carry out the calculating of angular difference and ratio, thereby whether the amplitude accuracy degree and the angular accuracy that draw tested voltage transformer (VT) be qualified, and the printer that the check results of accuracy of instrument transformers tester 5 can reach remote control unit prints.The wireless remote control box of remote control unit 2 can be controlled the whole system operation state by wireless telecommunications, boosts, operation such as step-down, simultaneously, the size of the inductance value of adjustable solar term crack REgulatable reactor 13 also.
Claims (4)
1. the on-the-spot accuracy check system of a 750kV voltage transformer (VT), it is characterized in that, comprise the industrial frequency resonance power supply based on the SF6 insulation, remote control unit, tandem formula standard mutual inductor and accuracy of instrument transformers tester, industrial frequency resonance power supply based on the SF6 insulation is electrically connected with remote control unit is two-way, remote control unit is electrically connected with the accuracy of instrument transformers tester is two-way, industrial frequency resonance power supply based on the SF6 insulation is electrically connected with tested voltage transformer (VT), tested voltage transformer (VT) is electrically connected with the accuracy of instrument transformers tester, industrial frequency resonance power supply based on the SF6 insulation is electrically connected with tandem formula standard mutual inductor, and tandem formula standard mutual inductor is electrically connected with the accuracy of instrument transformers tester.
2. the on-the-spot accuracy check system of 750kV voltage transformer (VT) according to claim 1, it is characterized in that, described industrial frequency resonance power supply based on the SF6 insulation is made up of pressure regulator, step-up transformer and air gap REgulatable reactor, pressure regulator, step-up transformer and air gap REgulatable reactor are electrically connected successively, and the air gap REgulatable reactor adopts the SF6 insulation.
3. the on-the-spot accuracy check system of 750kV voltage transformer (VT) according to claim 1 and 2 is characterized in that described remote control unit is made up of wireless remote control box and printer.
4. the on-the-spot accuracy check system of 750kV voltage transformer (VT) according to claim 1 is characterized in that described tested voltage transformer (VT) is electromagnetic potential transformer, capacitance type potential transformer or photo-electricity mutual-inductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320087185 CN203069773U (en) | 2013-02-27 | 2013-02-27 | Onsite accuracy-calibrating system for 750kV voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320087185 CN203069773U (en) | 2013-02-27 | 2013-02-27 | Onsite accuracy-calibrating system for 750kV voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069773U true CN203069773U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320087185 Expired - Fee Related CN203069773U (en) | 2013-02-27 | 2013-02-27 | Onsite accuracy-calibrating system for 750kV voltage transformer |
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| CN (1) | CN203069773U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609277A (en) * | 2016-02-18 | 2016-05-25 | 武汉磐电科技有限公司 | Multi-tap fixed adjustable reactor for checking 1,000kV extra-high voltage CVT and implementation method |
| CN105929353A (en) * | 2016-06-02 | 2016-09-07 | 河北省电力建设调整试验所 | Wireless transmission-based voltage regulator control method for extra-high voltage current transformer accuracy field tests |
| CN106546940A (en) * | 2016-11-16 | 2017-03-29 | 国网上海市电力公司 | A kind of field testing procedure of optical voltage transformer |
| CN106680756A (en) * | 2017-01-05 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Testing method, system and device for accuracy grade of direct-current voltage transformer |
| CN108680886A (en) * | 2018-05-24 | 2018-10-19 | 安徽国电京润电力科技有限公司 | Integral electrical voltage transformer automated calibration equipment |
| CN109521338A (en) * | 2018-11-27 | 2019-03-26 | 汪锐 | Frequency conversion parallel resonance pressure resistant test method based on Cascade boosting |
| CN110501596A (en) * | 2019-08-30 | 2019-11-26 | 国网山西省电力公司电力科学研究院 | A kind of wireless control system and method for instruction carriage |
-
2013
- 2013-02-27 CN CN 201320087185 patent/CN203069773U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609277A (en) * | 2016-02-18 | 2016-05-25 | 武汉磐电科技有限公司 | Multi-tap fixed adjustable reactor for checking 1,000kV extra-high voltage CVT and implementation method |
| CN105929353A (en) * | 2016-06-02 | 2016-09-07 | 河北省电力建设调整试验所 | Wireless transmission-based voltage regulator control method for extra-high voltage current transformer accuracy field tests |
| CN106546940A (en) * | 2016-11-16 | 2017-03-29 | 国网上海市电力公司 | A kind of field testing procedure of optical voltage transformer |
| CN106680756A (en) * | 2017-01-05 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Testing method, system and device for accuracy grade of direct-current voltage transformer |
| CN108680886A (en) * | 2018-05-24 | 2018-10-19 | 安徽国电京润电力科技有限公司 | Integral electrical voltage transformer automated calibration equipment |
| CN109521338A (en) * | 2018-11-27 | 2019-03-26 | 汪锐 | Frequency conversion parallel resonance pressure resistant test method based on Cascade boosting |
| CN110501596A (en) * | 2019-08-30 | 2019-11-26 | 国网山西省电力公司电力科学研究院 | A kind of wireless control system and method for instruction carriage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20150227 |
|
| EXPY | Termination of patent right or utility model |