CN202393861U - Test device for monitoring deformation of transformer winding - Google Patents
Test device for monitoring deformation of transformer winding Download PDFInfo
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- CN202393861U CN202393861U CN2011205253836U CN201120525383U CN202393861U CN 202393861 U CN202393861 U CN 202393861U CN 2011205253836 U CN2011205253836 U CN 2011205253836U CN 201120525383 U CN201120525383 U CN 201120525383U CN 202393861 U CN202393861 U CN 202393861U
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- 238000004804 winding Methods 0.000 title claims abstract description 79
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 4
- 230000008447 perception Effects 0.000 claims description 3
- 238000011160 research Methods 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 2
- 230000001143 conditioned effect Effects 0.000 abstract 1
- 230000003750 conditioning effect Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 5
- 238000013481 data capture Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Abstract
The utility model provides a test device for monitoring the deformation of a transformer winding. An input end of a voltage adjuster is connected with a municipal power frequency power supply, an output end of the voltage adjuster is connected with a primary winding of a booster transformer, a secondary winding of the booster transformer is connected with a primary winding of a power transformer to be monitored, a secondary winding of the power transformer to be monitored is connected with a primary winding and a secondary winding of a reduction transformer, two ends of the primary winding and the secondary winding of the power transformer to be monitored are respectively connected with a current mutual inductor and a voltage mutual inductor, the secondary winding of the voltage reduction transformer is connected with an alternating current dummy load, and data measured by the current mutual inductor and the voltage mutual inductor are conditioned by a signal conditioning plate, acquired by a data acquiring card, and transported into a computer. The test device is simple in wiring, can be used for continuously monitoring the winding states of the transformers for a long term, and is suitable for the laboratory research; and a monitoring part depends on the transformers and the mutual inductors around the transformers, so that the device can be used for monitoring the states of the transformer winding in a site.
Description
Technical field
The utility model relates to high voltage installation and experimental technique field, specifically is a kind of test unit of monitoring deformation of transformer winding.
Background technology
Transformer is one of very important equipment in the electric system, and its ruuning situation directly influences the safety of electric system.Transformer is collided in transporting installation process and impacts, and in operational process, suddenly-applied short circuit takes place, and all possibly cause winding to deform.Winding deformation is one of modal fault of power transformer, and the safety of electric system in serious threat.In order to find the potential faults of transformer timely, avoid the generation of accident, actively develop the deformation of transformer winding Study of Monitoring, have very important significance.
At present, the equipment that is used to judge the winding deformation of power transformer mainly adopts the experimental technique of off-line tests such as Low Voltage Impulse Method, short circuit impedance method and frequency response method to process.The transformer of 110kV and above specification is generally the provincialism transformer, and off-line test can cause relevant issues such as regional power failure, thereby influences normally carrying out of enterprise and resident's productive life.Through the power transformer correlation parameter is carried out ONLINE RECOGNITION, the comprehensive diagnos new technology of research winding deformation of power transformer situation can realize the real-time monitoring for the Transformer Winding situation, finds insulation defect early, avoids the generation of accident.At present, domestic had some research institutions that the winding deformation of power transformer situation is studied, but be main with emulation, still needs a large amount of breadboard concrete research work.
Summary of the invention
The utility model provides a kind of test unit of monitoring deformation of transformer winding; This device utilizes current transformer and voltage transformer (VT) that monitored power transformer voltage and current is measured in real time, and the voltage and current data of measurement gained calculate the leakage reactance of Transformer Winding by related software and then the Transformer Winding situation is judged.
A kind of test unit of monitoring deformation of transformer winding; Comprise pressure regulator, step-up transformer, monitored power transformer, step-down transformer, interchange fictitious load; The input end of pressure regulator is connected with power frequency supply with the city; The output terminal of pressure regulator links to each other with the elementary winding of step-up transformer; The secondary winding of step-up transformer links to each other with the elementary winding of monitored power transformer; The secondary winding of monitored power transformer links to each other with the first winding of step-down transformer, and the elementary winding of monitored power transformer and the two ends of secondary winding are connected to current transformer and voltage transformer (VT) respectively, the secondary winding of step-down transformer with exchange fictitious load and link to each other; The data of the elementary winding of monitored power transformer and the current transformer at secondary winding two ends and voltage measuring transformer gained are after signal regulating panel is nursed one's health, by sending into computing machine after the data collecting card collection.
Monitor the test unit of deformation of transformer winding as stated; Computing machine is used for through software the data-signal of data capture card collection being carried out data computation; Calculate the leakage reactance of monitored Winding in Power Transformer and result of calculation is judged judged result is sent to staff's communication apparatus by the communication module in the computing machine.
Monitor the test unit of deformation of transformer winding as stated, connect method in current transformer and voltage transformer (VT) adopt and carry out line.
Monitor the test unit of deformation of transformer winding as stated, said interchange fictitious load is resistive, perception or capacitive load.
The utility model wiring is simple, can realize the long-term continuous monitoring of the winding situation of transformer, is suitable for laboratory study; Monitoring system is partly relied on on-the-spot transformer and peripheral mutual inductor thereof, promptly applicable to on-the-spot transformer winding state monitoring.
Description of drawings
Fig. 1 is the structural representation of the test unit of the utility model monitoring deformation of transformer winding.
Among the figure: the 1-pressure regulator, the 2-step-up transformer, the monitored power transformer of 3-, the 4-step-down transformer, 5-exchanges fictitious load, 6-current transformer, 7-voltage transformer (VT), 8-signal regulating panel, 9-data collecting card, 10-computing machine.
Embodiment
To combine the accompanying drawing in the utility model below, the technical scheme in the utility model will be carried out clear, intactly description.
The structural representation of the test unit for the utility model monitoring deformation of transformer winding shown in Figure 1, the test unit of said monitoring deformation of transformer winding comprises pressure regulator 1, step-up transformer 2, monitored power transformer 3, step-down transformer 4, exchanges fictitious load 5.
The input end of pressure regulator 1 is connected with power frequency supply with the city, and the output terminal of pressure regulator 1 links to each other with the elementary winding of step-up transformer 2, and the input voltage of system is regulated.The secondary winding of step-up transformer 2 links to each other with the elementary winding of monitored power transformer 3, and voltage is risen to the required high pressure of test.
The elementary winding of monitored power transformer 3 and the two ends of secondary winding are connected to current transformer 6 and voltage transformer (VT) 7 respectively; Be used for the elementary winding of monitored power transformer 3 and the voltage and current of secondary winding are measured, connect method in current transformer 6 adopts with voltage transformer (VT) 7 and carry out line.The secondary winding of monitored power transformer 3 links to each other with the first winding of step-down transformer 4; The secondary winding of step-down transformer 4 with exchange fictitious load 5 and link to each other; High pressure drop to exchanging the voltage range that fictitious load 5 can trouble free service, is exchanged fictitious load 5 and through changing the power that is loaded the electric current in the circuit regulated.Exchange fictitious load 5 described in the present embodiment and can be resistive, perception or capacitive load.
The data of the elementary winding of monitored power transformer 3 and the current transformer at secondary winding two ends 6 and voltage transformer (VT) 7 measurement gained are after signal regulating panel 8 is nursed one's health; By sending into computing machine 10 after data collecting card 9 collections; The data-signal that computing machine 10 is gathered data capture card 9 through software carries out data computation; Calculate the leakage reactance of monitored power transformer 3 windings and result of calculation is judged, thereby obtain the state of monitored power transformer 3 windings, judged result can be sent to staff's communication apparatus by the communication modules in the computing machine 10; Reach the effect of remote monitoring; Wherein the router of communication module can be provided with the contact method of staff's transmitting apparatus (like mobile phone etc.), and can the time of sending be provided with, and reaches the effect of regularly reporting status of equipment.
The extraneous high-frequency interferencing signal that is coupled when wherein the signal condition of signal regulating panel 8 refers to current transformer 6 and voltage transformer (VT) 7 measurements carries out filtering, avoids interference the influence of signal to judged result.
The data computation of computing machine 10 is meant that computing machine uses software to calculate the leakage reactance of real-time monitored power transformer 3 windings according to least square fitting, wherein the signals collecting time in the software with gather quantity and should be complementary with data collecting card 9.Concrete, for 9 of data collecting cards adopt m continuously the discrete sampling point find the solution the dependent equation group because transformer is in case confirm; The equivalent system of equations of its circuit is permanent the establishment; Numerical value in the system of equations comprises voltage, electric current, phase place, substitutional resistance, equivalent leakage reactance, equivalent excitation reactance etc., and wherein, the signal that data collecting card 9 can collect is voltage, electric current, phase place etc.; The numerical value that need solve is substitutional resistance and equivalent leakage reactance; Utilize m sampled result of data collecting card 9 this moment, can obtain m system of equations, utilizes least square method that system of equations is found the solution; Can obtain the estimates of parameters (being the substitutional resistance and the equivalent leakage reactance of Transformer Winding) under the least square meaning, thereby judge transformer winding state.
The applicant has done research to the transformer leakage reactance with the relation of winding deformation; Verify out that the transformer leakage reactance has contacting directly physically with winding deformation; And can monitor in real time and judge for transformer winding state and fault through this test unit, so can prove that this test unit is feasible for the on-line monitoring winding deformation through emulation proof.
The above; Be merely the embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who belongs to the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claim.
Claims (3)
1. test unit of monitoring deformation of transformer winding; Comprise pressure regulator (1), step-up transformer (2), monitored power transformer (3), step-down transformer (4), exchange fictitious load (5); The input end of pressure regulator (1) is connected with power frequency supply with the city; The output terminal of pressure regulator (1) links to each other with the elementary winding of step-up transformer (2); The secondary winding of step-up transformer (2) links to each other with the elementary winding of monitored power transformer (3); The secondary winding of monitored power transformer (3) links to each other with the first winding of step-down transformer (4); It is characterized in that: the elementary winding of monitored power transformer (3) and the two ends of secondary winding are connected to current transformer (6) and voltage transformer (VT) (7) respectively; The secondary winding of step-down transformer (4) with exchange fictitious load (5) and link to each other, the data of the current transformer (6) at the elementary winding of monitored power transformer (3) and secondary winding two ends and voltage transformer (VT) (7) measurement gained are after signal regulating panel (8) is nursed one's health, by sending into computing machine (10) after data collecting card (9) collection.
2. the test unit of monitoring deformation of transformer winding as claimed in claim 1 is characterized in that: connect method in current transformer (6) and voltage transformer (VT) (7) adopt and carry out line.
3. the test unit of monitoring deformation of transformer winding as claimed in claim 1 is characterized in that: said interchange fictitious load (5) is resistive, perception or capacitive load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205253836U CN202393861U (en) | 2011-12-14 | 2011-12-14 | Test device for monitoring deformation of transformer winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205253836U CN202393861U (en) | 2011-12-14 | 2011-12-14 | Test device for monitoring deformation of transformer winding |
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| Publication Number | Publication Date |
|---|---|
| CN202393861U true CN202393861U (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205253836U Expired - Fee Related CN202393861U (en) | 2011-12-14 | 2011-12-14 | Test device for monitoring deformation of transformer winding |
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|---|---|
| CN (1) | CN202393861U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675563A (en) * | 2013-12-31 | 2014-03-26 | 杭州得诚电力科技有限公司 | Energy-saving multifunctional power test system |
| CN103743993A (en) * | 2013-10-16 | 2014-04-23 | 西安交通大学 | System for detecting transformer winding deformation and method thereof |
| CN104111027A (en) * | 2014-07-29 | 2014-10-22 | 国家电网公司 | Lissajous figure analytical method based transformer power frequency signal sensor system |
| CN104714153A (en) * | 2013-12-11 | 2015-06-17 | 株式会社电子制御国际 | Winding test device |
| CN106597150A (en) * | 2016-11-29 | 2017-04-26 | 武汉振源电气股份有限公司 | Voltage transformer on-line state monitoring and fault diagnosing method |
| CN109470132A (en) * | 2018-10-31 | 2019-03-15 | 广州供电局有限公司 | Deformation of transformer winding detection method, device and equipment |
| CN112630580A (en) * | 2021-01-11 | 2021-04-09 | 西南交通大学 | Transformer winding short-circuit fault simulation device |
-
2011
- 2011-12-14 CN CN2011205253836U patent/CN202393861U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743993A (en) * | 2013-10-16 | 2014-04-23 | 西安交通大学 | System for detecting transformer winding deformation and method thereof |
| CN103743993B (en) * | 2013-10-16 | 2016-04-27 | 西安交通大学 | A kind of method detecting deformation of transformer winding |
| CN104714153A (en) * | 2013-12-11 | 2015-06-17 | 株式会社电子制御国际 | Winding test device |
| CN103675563A (en) * | 2013-12-31 | 2014-03-26 | 杭州得诚电力科技有限公司 | Energy-saving multifunctional power test system |
| CN103675563B (en) * | 2013-12-31 | 2016-09-21 | 杭州得诚电力科技股份有限公司 | Energy-saving multifunction power test system |
| CN104111027A (en) * | 2014-07-29 | 2014-10-22 | 国家电网公司 | Lissajous figure analytical method based transformer power frequency signal sensor system |
| CN104111027B (en) * | 2014-07-29 | 2017-02-15 | 国家电网公司 | Lissajous figure analytical method based transformer power frequency signal sensor system |
| CN106597150A (en) * | 2016-11-29 | 2017-04-26 | 武汉振源电气股份有限公司 | Voltage transformer on-line state monitoring and fault diagnosing method |
| CN109470132A (en) * | 2018-10-31 | 2019-03-15 | 广州供电局有限公司 | Deformation of transformer winding detection method, device and equipment |
| CN112630580A (en) * | 2021-01-11 | 2021-04-09 | 西南交通大学 | Transformer winding short-circuit fault simulation device |
| CN112630580B (en) * | 2021-01-11 | 2021-09-21 | 西南交通大学 | Transformer winding short-circuit fault simulation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121108 Owner name: THE ELECTRIC POWER SCIENCE RESEARCH INSTITUTE OF H Free format text: FORMER OWNER: THE ELECTRIC POWER EXPERIMENT RESEARCH INSTITUTE OF HUBEI ELECTRIC POWER COMPANY Effective date: 20121108 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121108 Address after: 430077, 361 East Main Street, Wuchang District, Hubei, Wuhan Patentee after: Hubei Electric Power Research Institute of Power Company Patentee after: State Grid Corporation of China Address before: 430077 No. 227 East Main Street, Wuhan, Hubei, Wuchang Patentee before: Hubei Electric Power Testing & Research Institute, Hubei Electric Power Company |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20201214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |