CN201569675U - Local discharge testing power supply device for ultra-high-voltage transformer - Google Patents
Local discharge testing power supply device for ultra-high-voltage transformer Download PDFInfo
- Publication number
- CN201569675U CN201569675U CN2009202774887U CN200920277488U CN201569675U CN 201569675 U CN201569675 U CN 201569675U CN 2009202774887 U CN2009202774887 U CN 2009202774887U CN 200920277488 U CN200920277488 U CN 200920277488U CN 201569675 U CN201569675 U CN 201569675U
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- transformer
- voltage
- intermediate frequency
- frequency generator
- partial discharge
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- 238000012360 testing method Methods 0.000 title claims abstract description 52
- 230000001012 protector Effects 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 4
- 238000002474 experimental method Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 5
- 238000007654 immersion Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Abstract
The utility model provides a local discharge testing power supply device for an ultra-high-voltage transformer, which comprises a motor, an intermediate-frequency generator, a control protector A, a power supply wire incoming port, a generator wire outgoing port, a low-voltage compensation reactor, an intermediate transformer, a compensation reactor and a sample. The motor, the intermediate-frequency generator and the control protector A are integrated and arranged in a container cabinet made of metal. The utility model can provide a power supply system with small background interference and simple and reliable structure for field voltage sensing and local discharge testing of the ultra-high-voltage transformer, and ensure the local discharge testing power supply system of the transformer which can satisfy the testing requirements for the sample of the ultra-high-voltage transformer.
Description
Technical field
The utility model belongs to the high voltage and insulation technology field, is specifically related to a kind of partial discharge test supply unit that is used for extra-high voltage transformer.
Background technology
Transformer is in the long-time running process, and some weak part of its built-in electrical insulation under high field intensity shelf depreciation may take place, thereby causes insulation to descend, and under serious shelf depreciation long term, even can cause puncture, thereby cause the damage of transformer.Especially for extra-high voltage transformer, whether intact for detecting its insulating property, after the installation, must carry out long induced voltage and partial discharge test at the scene, to examine its insulating property.How to adopt simple and reliable experiment power supply system in the test at the scene, the extra-high voltage transformer test product is pressurizeed according to experimental study, simultaneously effectively suppress and avoid the interference of experiment power supply system itself, being that experiment power supply system interference itself meets the requirement of partial discharge test to the shelf depreciation background, is the problem that needs solution.There is following shortcoming in the experiment power supply system of prior art:
1, capacity is less, generally is to test at 500kV and following transformer, can not well be suitable for for jumbo transformer.
2, existing experiment power supply system background interference level is higher, can not satisfy the requirement of experiment of 1000kV transformer.
The utility model content
For overcoming the defective of prior art, the purpose of this utility model is to provide a kind of provides background interference little, simple and reliable and can satisfy the partial discharge test supply unit that the extra-high voltage transformer test product is carried out the transformer of testing requirements for the on-the-spot induced voltage of extra-high voltage transformer and partial discharge test.
For this reason, a kind of partial discharge test supply unit that is used for extra-high voltage transformer, comprise motor, intermediate frequency generator, control protector A, electric power incoming line mouth, generator outlet mouth, low-voltage compensation reactor, intermediate transformer, high pressure compensation reactor and test product, it is characterized in that: described motor, intermediate frequency generator, control protector A be integrated to be arranged in the container counter of metal preparation; Described electric power incoming line mouth is introduced AC power and is respectively control protector A and motor is powered, described motor operation drives the intermediate frequency generator operation and sends electric current of intermediate frequency, this electric current of intermediate frequency is linked into the intermediate transformer that is used for output voltage is elevated to trial voltage through the generator outlet mouth, is parallel with the low-voltage compensation reactor and compensates perceptual capacity between intermediate frequency generator and intermediate transformer; After intermediate transformer boosted, voltage finally was applied on the test product and tests, and is parallel with the high pressure compensation reactor and compensates perceptual capacity between intermediate transformer and test product; Described electric power incoming line mouth and intermediate frequency generator line outlet are divided into the both sides, upper end of container counter, and in container counter inside electric power incoming line and intermediate frequency generator outlet are spatially separated.
Wherein, this experiment power supply system has the Long-distance Control case, and it is drawn from described control protector A and is arranged at outside the container counter, and described Long-distance Control case comprises control knob, emergency stop push button, LCDs, IO interface and input equipment.
Wherein, described control protector A comprises programmable logic controller (PLC), electric quantity acquisition module, this locality/Long-distance Control converter, pressure regulator, contactor, auxiliary reclay, magnetizing exciter and the isolating switch that is arranged in the shielding rack, is provided with the control panel of emergency operation button on the described rack.
Wherein, described Long-distance Control case carries out data transmission with programmable logic controller (PLC) among the control protector A by cable, optical cable or wireless signal and communicates by letter.
Wherein, described test product is selected extra-high voltage transformer for use.
Wherein, described low-voltage compensation reactor adopts the low-voltage compensation reactor of dry type or oil immersed type, and its electric pressure matches with intermediate frequency generator.
Wherein, described high pressure compensation reactor adopts oil immersion insulated barrel-type structure, and its insulation voltage grade matches with the high-pressure side of intermediate transformer.
The beneficial effects of the utility model are:
1, intermediate frequency motor-generator and control protector are integrated in the container of standard,, reduce, Partial Discharge Detection is exerted an influence avoiding, simultaneously, be convenient to move and transportation to outside space radiation with the electromagnetic interference shield of power supply and control system;
2, the intermediate frequency motor-generator of Shi Yonging is determined according to the power attenuation under frequency multiplication of 1000kV extra-high voltage transformer, and enough active power can be provided;
3, all control and concentrated being placed in of protection device are shielded in the rack, and be fixed on the container bottom board, reduce the electromagnetic interference (EMI) of secondary control protection system;
4, (100～200Hz) generator outlet mouth is divided on the both sides of container upper end, also two kinds of line strictnesses is spatially isolated in collection case inside, avoids producing coupled interference with the electric power incoming line mouth of 50Hz and intermediate frequency;
5, adopt the local control mode that combines with Long-distance Control, being provided with switch switches, local control panel is arranged in the control, can monitor the duties such as voltage, electric current of motor, generator, and starts, excitation, buck, promptly operation such as stops; Be provided with the Long-distance Control case, can Long-distance Control and this system of monitoring.Local and remote control mode can be standby each other, improves the reliability of system;
6. the Long-distance Control case adopts the PLC technology to monitor and control, adopt optical fiber or cable to be connected and communicate by letter with the control protector, or the employing radio communication with control protector and be connected and communicate by letter.For site test, optical fiber connection communication mode has isolates control case far away and main system on electric, but, damages the influence test easily under low temperature or external force effect because the optical fiber material is more crisp; Low-voltage cable is soft, the reliability height, but easily system's superpotential is introduced control case far away, thus damage control case far away; Communication has saved the connecting link with main system, but might influence communication reliability owing to on-the-spot interference or various uncertain factor, thereby the interrupt operation process has a negative impact to test.
Description of drawings
Fig. 1 is according to a kind of modular structure synoptic diagram that is used for the partial discharge test supply unit of extra-high voltage transformer of the present utility model;
Wherein, 1-motor, 2-intermediate frequency generator, 3-switch board; 4-electric power incoming line mouth (50Hz), 5-generator outlet mouth (200Hz), 6-protects cabinet, 7-Long-distance Control case; 8-low-voltage compensation reactor, 9-intermediate transformer, 10-high pressure compensation reactor, 11-test product (extra-high voltage transformer).
Embodiment
Be a preferred embodiment of the present utility model below, test power device described in the utility model be described in further details below in conjunction with accompanying drawing.
As shown in Figure 1, test power device of the present utility model is with in the integrated container counter that is arranged on the metal preparation of motor 1, intermediate frequency generator 2, control protector A, electric power incoming line mouth 4 and generator outlet mouth 5, the AC power of 380V/50Hz is introduced by electric power incoming line mouth 4, powered respectively for controlling protector A and motor 1; Motor 1 running drives intermediate frequency generator 2 operations and sends intermediate frequency power supply, and this electric current is generally 690-1000 volt, 100-200Hz; The electric current that intermediate frequency generator 2 sends is linked into intermediate transformer 9 through generator outlet mouth 5, and the effect of intermediate transformer 9 is that the voltage that will export is elevated to trial voltage (about 200kV); Between intermediate frequency generator 2 and intermediate transformer 9, be parallel with a low-voltage compensation reactor 8 and compensate perceptual capacity; After intermediate transformer 9 boosted, voltage finally was applied on the test product 11 (employing extra-high voltage transformer) and tests; Between intermediate transformer 9 and test product 11, be parallel with a high pressure compensation reactor 10 and compensate perceptual capacity.The intermediate frequency generator line outlet 5 of the electric power incoming line mouth of 50Hz and 200Hz is divided into the two ends of container counter, also electric power incoming line and intermediate frequency generator outlet is separated in the space in container counter inside, to avoid two kinds of electric wires arranged in a crossed manner.
Described control protector A comprises programmable logic controller (PLC), electric quantity acquisition module, this locality/Long-distance Control converter, pressure regulator, contactor, auxiliary reclay, magnetizing exciter and isolating switch; Wherein programmable logic controller (PLC) (being called for short PLC), electric quantity acquisition module, this locality/Long-distance Control converter, pressure regulator, contactor, auxiliary reclay and magnetizing exciter are arranged in the switch board 3, one control panel also is set on the switch board 3, and this panel is provided with the emergency operation button; Described isolating switch is arranged in the protection cabinet 6, and it comprises fuser motor and generator outlet isolating switch, can in time cut off the test loop when faults such as motor or generator superpotential, excess current take place.
Described Long-distance Control case 7 is drawn from control protector A, is provided with the control knob, emergency stop push button, IO interface and the input equipment that are used for controlling protection cabinet 3 magnetizing exciters deciliter, generator outlet place isolating switch deciliter and whole test supply unit buck in the Long-distance Control case 7; Simultaneously also be provided with LCDs on the Long-distance Control case, it carries out communication with PLC use cable, optical cable or wireless signal in the switch board 3.
Embodiment 1
Determine the capacity of motor 1 and intermediate frequency generator 2 according to extra-high voltage transformer test product 11 required power supply capacity in partial discharge test, as test product 11 capacity is the single-phase autotransformer of 1000MVA, then motor 1 needs to select the capacity of 300kW～1000kW, intermediate frequency generator 2 needs to select the capacity of 800kVA～2500kVA, and intermediate frequency generator 2 output voltages are at 690V～1000V.Be equiped with PLC, electric quantity acquisition module, this locality/Long-distance Control converter, pressure regulator, contactor, auxiliary reclay and magnetizing exciter etc. in the switch board 3, its can control the startup of motor 1 and stop, the boosting and step-down etc. of the disconnection of intermediate frequency generator energized circuit and closure, intermediate frequency generator; In the protection cabinet 6 isolating switch is arranged; it comprises fuser motor and generator outlet isolating switch; can be when faults such as motor, generator superpotential, excess current take place; in time cut off the test loop by the emergency operation button on the control panel of switch board 3, the person or equipment are produced harm to prevent fault.The low-voltage compensation reactor can adopt dry type or oil immersed type, and electric pressure cooperates with intermediate frequency generator 2, and voltage is 690V～1000V.Intermediate transformer 9 voltages can be tested needed voltage with 690V～1000V boosting inverter to 200kV, to satisfy the requirement of test product to trial voltage.The insulation voltage grade of described high pressure compensation reactor 10 cooperates with the intermediate transformer high-pressure side, also is about 200kV, and structural shape is the oil immersion insulated barrel-type, has good heat dispersion, can long-play.Long-distance Control case 7 comprises control knob, the emergency stop push button that is used to control magnetizing exciter deciliter, generator outlet isolating switch deciliter and whole test power-supply system buck; LCDs is arranged simultaneously; by with the PLC communication of protection in the cabinet 6; the running status that can show motor, generator, energized circuit in real time; and motor voltage electric current, generator voltage electric current, generator output is meritorious, parameter such as phase angle between the generator output voltage, electric current.
Above by special embodiment content description the utility model, but those skilled in the art also can recognize the multiple possibility of modification and optional embodiment, for example, by combination and/or change the feature of single embodiment.Therefore, be understandable that these modification and optional embodiment will be considered as included in the utility model, only enclosed patent claims of scope of the present utility model and coordinator restriction thereof.
Claims (7)
1. partial discharge test supply unit that is used for extra-high voltage transformer, comprise motor (1), intermediate frequency generator (2), control protector A, electric power incoming line mouth (4), generator outlet mouth (5), low-voltage compensation reactor (8), intermediate transformer (9), high pressure compensation reactor (10) and test product (11), it is characterized in that: described motor (1), intermediate frequency generator (2), control protector A be integrated to be arranged in the container counter that metal prepares; Described electric power incoming line mouth (4) is introduced AC power and is respectively control protector A and motor (1) is powered, described motor (1) running drives intermediate frequency generator (2) operation and sends electric current of intermediate frequency, this electric current of intermediate frequency is linked into the intermediate transformer (9) that is used for output voltage is elevated to trial voltage through generator outlet mouth (5), is parallel with low-voltage compensation reactor (8) and compensates perceptual capacity between intermediate frequency generator (2) and intermediate transformer (9); After intermediate transformer (9) boosted, voltage finally was applied on the test product (11) and tests, and is parallel with high pressure compensation reactor (10) and compensates perceptual capacity between intermediate transformer (9) and test product (11); Described electric power incoming line mouth (4) and intermediate frequency generator line outlet (5) are divided into the both sides, upper end of container counter, and in container counter inside electric power incoming line and intermediate frequency generator outlet are spatially separated.
2. partial discharge test supply unit as claimed in claim 1; it is characterized in that: this experiment power supply system has Long-distance Control case (7); it is drawn from described control protector A and is arranged at outside the container counter, and described Long-distance Control case (7) comprises control knob, emergency stop push button, LCDs, IO interface and input equipment.
3. partial discharge test supply unit as claimed in claim 2; it is characterized in that: described control protector A comprises programmable logic controller (PLC), electric quantity acquisition module, this locality/Long-distance Control converter, pressure regulator, contactor, auxiliary reclay, magnetizing exciter and the isolating switch that is arranged in the shielding rack, is provided with the control panel of emergency operation button on the described rack.
4. partial discharge test supply unit as claimed in claim 3 is characterized in that: described Long-distance Control case (7) carries out data transmission with programmable logic controller (PLC) among the control protector A by cable, optical cable or wireless signal and communicates by letter.
5. as the arbitrary described partial discharge test supply unit of claim 1-4, it is characterized in that: described test product (11) is selected extra-high voltage transformer for use.
6. as the arbitrary described partial discharge test supply unit of claim 1-4, it is characterized in that: described low-voltage compensation reactor (8) adopts the low-voltage compensation reactor of dry type or oil immersed type, and its electric pressure matches with intermediate frequency generator (2).
7. as the arbitrary described partial discharge test supply unit of claim 1-4, it is characterized in that: described high pressure compensation reactor (10) adopts oil immersion insulated barrel-type structure, and its insulation voltage grade matches with the high-pressure side of intermediate transformer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202774887U CN201569675U (en) | 2009-12-04 | 2009-12-04 | Local discharge testing power supply device for ultra-high-voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202774887U CN201569675U (en) | 2009-12-04 | 2009-12-04 | Local discharge testing power supply device for ultra-high-voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201569675U true CN201569675U (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202774887U Expired - Lifetime CN201569675U (en) | 2009-12-04 | 2009-12-04 | Local discharge testing power supply device for ultra-high-voltage transformer |
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| Country | Link |
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| CN (1) | CN201569675U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011066714A1 (en) * | 2009-12-04 | 2011-06-09 | 中国电力科学研究院 | Partial discharge experiment power supply system for extra-high voltage transformer and method thereof |
| CN104330599A (en) * | 2014-10-22 | 2015-02-04 | 广东电网有限责任公司电力科学研究院 | Partial-discharge ultrahigh-frequency signal simulation source |
-
2009
- 2009-12-04 CN CN2009202774887U patent/CN201569675U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011066714A1 (en) * | 2009-12-04 | 2011-06-09 | 中国电力科学研究院 | Partial discharge experiment power supply system for extra-high voltage transformer and method thereof |
| US8890540B2 (en) | 2009-12-04 | 2014-11-18 | China Electric Power Research Institute | Partial discharge experiment power supply system for extra-high voltage transformer and method thereof |
| CN104330599A (en) * | 2014-10-22 | 2015-02-04 | 广东电网有限责任公司电力科学研究院 | Partial-discharge ultrahigh-frequency signal simulation source |
| CN104330599B (en) * | 2014-10-22 | 2017-05-03 | 广东电网有限责任公司电力科学研究院 | Partial-discharge ultrahigh-frequency signal simulation source |
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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 Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140321 Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140321 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100192 HAIDIAN, BEIJING TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140321 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |