CN201203633Y - Power supply device for controllable inductor induction voltage-resistant experiment - Google Patents
Power supply device for controllable inductor induction voltage-resistant experiment Download PDFInfo
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- CN201203633Y CN201203633Y CNU2008200678062U CN200820067806U CN201203633Y CN 201203633 Y CN201203633 Y CN 201203633Y CN U2008200678062 U CNU2008200678062 U CN U2008200678062U CN 200820067806 U CN200820067806 U CN 200820067806U CN 201203633 Y CN201203633 Y CN 201203633Y
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- reactor
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- power supply
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- intermediate transformer
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Abstract
The utility model discloses a power supply device for the induced overvoltage withstand test of a controllable reactor and a local discharge measuring method thereof, relating to a field test technology of a controllable reactor. A variable-frequency power supply cabinet (1), an intermediate transformer (2) and a controllable reactor (6) are sequentially connected for providing a test power supply for the controllable reactor (6); the controllable reactor (6), a detecting impedance (5) and a local discharge tester (7) are sequentially connected for detecting the local discharge amount of the controllable reactor (6); an intermediate transformer (2), a condenser divider (3) and a voltmeter (4) are sequentially connected for measuring the test voltage of the intermediate transformer (2); and a compensation reactor (8) and the controllable reactor (6) are connected for compensating the wattless current of the controllable reactor (6). The utility model is suitable for the induced overvoltage withstand test of all controllable reactors and the local discharge measurement thereof.
Description
Technical field
The utility model relates to a kind of controlled reactor site test technology, relates in particular to a kind of power supply device for controllable reactor induction voltage-resistant experiment.
Background technology
More than 90 of the existing 500kV UHV (ultra-high voltage) alternating current circuit of China's electrical network, the about 15000km of total length.After the power station, Three Gorges was built up, 500kV circuit and capacitive charge power will increase a lot.For Central China Power Grid, because water power proportion is very big, flood season and hydropower in low water season are exerted oneself, peak and valley power load variations are very big, and the control that causes line voltage is difficulty very.Usually, but comprehensively adopt the Static Var Compensator of common UHV (ultra-high voltage) shunt reactor switching low-voltage shunt reactor, generator leading phase operation and some to solve the problems referred to above.But common UHV (ultra-high voltage) reactance device capacity is uncontrollable, and low tension reactor can only grouping switching, exists the problem that is subjected to the transformer capacity restriction and the wretched insufficiency of exerting oneself.Existing phased static compensation device can only be used in the low-pressure side compensation, and price is very expensive, can not adopt in a large number.UHV (ultra-high voltage) controllable parallel reactors control is flexibly, and is cheap, but smooth adjustment system reactive power not only, the restriction power-frequency voltage raises and secondary arc current, improving system stability, also have the function that limits switching overvoltage significantly concurrently, should be the reactive-load compensation equipment of electrical network first-selection.Studies show that: only Central China Power Grid only need increase newly about perceptual idle 15Gvar, and can save expensive UHV (ultra-high voltage) large capcity breaker if all adopt UHV (ultra-high voltage) controlled reactor compensation in parallel.
132 kilometers of in the recent period newly-built II loop line road, 500kV (three) Xiajiang (mound) total lengths, Jiangling, II loop line road, Xiajiang side design configurations has a high pressure controlled reactor, the high pressure controlled reactor that adopts is the reactor group of forming with three single-phase high voltage controlled reactors, according to GB GB50150-2006 requirement, should carry out partial discharge test at the scene, especially controlled reactor is collided in transit, for checking that whether the inner device body of controlled reactor exists displacement and distortion and the collision influence to insulation system, is badly in need of a kind of power supply device for controllable reactor induction voltage-resistant experiment of development.
On-the-spot induced over voltage withstand test of controlled reactor and measurement of partial discharge thereof still belong to the first time at home.
Summary of the invention
The purpose of this utility model is exactly in order to overcome the shortcoming and defect that prior art exists, to provide a kind of controlled reactor on-the-spot induction pressure test supply apparatus.
The purpose of this utility model is achieved in that
The utility model comprises controlled reactor, is provided with variable-frequency power sources cabinet, intermediate transformer, capacitive divider, voltage table, detection impedance, instrument for measuring partial discharge and compensation reactor;
Variable-frequency power sources cabinet, intermediate transformer, controlled reactor connect successively, for controlled reactor provides experiment power supply;
Controlled reactor, detection impedance, instrument for measuring partial discharge connect successively, detect the partial discharge quantity of controlled reactor;
Intermediate transformer, capacitive divider, voltage table connect successively, measure the trial voltage of intermediate transformer;
Compensation reactor is connected with controlled reactor, the reactive current of compensation controlled reactor.
The utility model principle of work:
Utilize variable-frequency power sources cabinet and intermediate transformer as experiment power supply, adopt the compensation reactor compensation, produce parallel resonance with controlled reactor; Intermediate transformer makes controlled reactor high-pressure side winding test voltage reach 1.5U to the low-pressure side winding pressurization of controlled reactor
mIn the number of winning the confidence of the high-pressure side of controlled reactor bushing end screen, be sent to instrument for measuring partial discharge by cable after in detecting impedance, carrying out data processing and analyze.
The utility model has realized carrying out presence at home first on controlled reactor should withstand voltage and partial discharge test.
The utility model using method:
1. adopt the variable-frequency power sources cabinet to make the single-phase output voltage supply of power supply intermediate transformer and boost, with compensation reactor compensation controlled reactor capacitive reactive power;
Described variable-frequency power sources cabinet provides the trial voltage of 0～300Hz as experiment power supply;
2. at trial voltage 1.5U
mAny series and parallel of compensation reactor is used down;
3. adopt intermediate transformer, capacitive divider, voltage table to be connected the controlled reactor low-pressure side and monitor the trial voltage that is applied;
4. in the screen number of winning the confidence of the bushing of controlled reactor end, be sent to instrument for measuring partial discharge by cable after in detecting impedance, carrying out data processing and analyze;
5. between intermediate transformer and capacitive divider, between intermediate transformer and controlled reactor, connect with the aluminium foil bellows respectively, prevent corona;
6. must under low-voltage, be debugged in the site test.
The utlity model has following advantage and good effect:
1. for controlled reactor, be to respond to withstand voltage and measurement of partial discharge first at the scene.This supply unit proves through site test, adopts intermediate transformer and compensation reactor and variable-frequency power sources cabinet as test power device, on controlled reactor, carry out presence should be withstand voltage and partial discharge test be feasible.
2. adopt high voltage to carry out the controllable reactance general ability from low-pressure side winding excitation at the scene and put measurement, actual measurement shows that as long as add all pressures measure of voltage lead wires and compensation equipment, current potential connects reliable, and background interference can be suppressed to minimum.
3. be applicable to the induced over voltage withstand test and the measurement of partial discharge thereof of all controlled reactors.
Description of drawings
Fig. 1 is the utility model block diagram.
Wherein:
1-variable-frequency power sources cabinet; 2-intermediate transformer; 3-capacitive divider;
4-voltage table; 5-detection reactance; 6-controlled reactor;
7-instrument for measuring partial discharge; 8-compensation reactor.
Embodiment
Further specify below in conjunction with drawings and Examples:
One, general structure
As Fig. 1, the utility model comprises controlled reactor 6, is provided with variable-frequency power sources cabinet 1, intermediate transformer 2, capacitive divider 3, voltage table 4, detects impedance 5, instrument for measuring partial discharge 7 and compensation reactor 8;
Variable-frequency power sources cabinet 1, intermediate transformer 2, controlled reactor 6 connect successively;
Controlled reactor 6, detection impedance 5, instrument for measuring partial discharge 7 connect successively;
Two, each parts
1, the variable-frequency power sources cabinet 1
Adopt variable-frequency power sources cabinet 1 as experiment power supply.The output field voltage is at 0-360V, the frequency standard sine wave at 30-300Hz during the work of this device, and boosting by intermediate transformer is added in the low-pressure side of controlled reactor (6).
Variable-frequency power sources cabinet 1 parameter is as follows:
Input voltage: 380 ± 10%
Output power: 300kW
Output voltage: 0～365V
Output current: 0～800A
Regulating frequency: 0～300Hz
2, intermediate transformer 2
1. intermediate transformer 2 parameters are as follows:
Model: YDQW 800kVA/180kV
Numbering: 221006,7
Low voltage voltage: 500V
High tension voltage: 180kV
Low-tension current: 1600A
High-tension current: 4.4A
Instrument voltage: 200V
Voltage ratio: 360 times
Frequency: 200Hz
Weight: 1300kg
2. design feature:
Fuel tank-employing steel plate is made cylindrical shape, and upper and lower covers adopts arcuate structure, eliminates the shearing force of steel plate, the case lid flange with immerse oneself in screw rod together with the high-low pressure bobbin seal after, fill with 10kg/cm
2Hydraulic pressure; 24 hours ne-leakages, distortion, safety coefficient is 2.2;
Iron core-employing 0.3mm silicon steel sheet, horizontal single frame structure, core section 420mm
2, the close 1.0T that gets of magnetic, iron core surface full-shield is to reduce the field intensity that shelf depreciation takes place;
Coil-high pressure umber of turn 540 circles, electric close 2A/mm
2, 20 layers of 20 layers+0.05mm of turn insulation 0.05mm mylar low insulations, overhang insulation is apart from 90mm and be provided with grading ring;
The low pressure number of turn 15 circles, electric close 2A/mm
2
Big electric current adopts the diamagnetism steel plate to reduce local overheating to the outlet.
Sleeve pipe-employing engineering plastics, creep distance 980mm, jumping are apart from 900mm surface spray insulating varnish, and 400 * 450mm grading shield is equipped with in the end;
Insulating medium-employing SF
6Gas is at 4.5kg/cm
2Following breakdown field strength 230kV/cm has reduced transformer weight greatly, oil immersion test light transformer 1.5 more of the same type.
General assembly (TW)-1.2 ton.
Intermediate transformer (2) has carried out 1.1U by technical requirement
NBe local discharge test and the following 1 hour temperature rise test of rated short circuit current under 200kV induced over voltage withstand test in 5 minutes and the 1.0UN.
3, compensation reactor 8
Rated voltage: 40kV
Separate unit reactance: 3H
Rated current: 20A
4, other parts of this device are part commonly used.
Claims (1)
1, a kind of power supply device for controllable reactor induction voltage-resistant experiment comprises controlled reactor (6); It is characterized in that:
Be provided with variable-frequency power sources cabinet (1), intermediate transformer (2), capacitive divider (3), voltage table (4), detect impedance (5), instrument for measuring partial discharge (7) and compensation reactor (8);
Variable-frequency power sources cabinet (1), intermediate transformer (2), controlled reactor (6) connect successively;
Controlled reactor (6), detection impedance (5), instrument for measuring partial discharge (7) connect successively;
Intermediate transformer (2), capacitive divider (3), voltage table (4) connect successively;
Compensation reactor (8) is connected with controlled reactor (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200678062U CN201203633Y (en) | 2008-06-16 | 2008-06-16 | Power supply device for controllable inductor induction voltage-resistant experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200678062U CN201203633Y (en) | 2008-06-16 | 2008-06-16 | Power supply device for controllable inductor induction voltage-resistant experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201203633Y true CN201203633Y (en) | 2009-03-04 |
Family
ID=40425945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200678062U Expired - Fee Related CN201203633Y (en) | 2008-06-16 | 2008-06-16 | Power supply device for controllable inductor induction voltage-resistant experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201203633Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866331A (en) * | 2012-09-11 | 2013-01-09 | 青海电力科学试验研究院 | In-situ local discharging test interference resistance method for converter transformer in high altitude areas |
| CN103267933A (en) * | 2013-05-02 | 2013-08-28 | 国家电网公司 | Method for measuring partial discharge in transformer induced voltage testing device |
| CN103278753A (en) * | 2013-05-02 | 2013-09-04 | 国家电网公司 | Device for induced voltage tests on transformers |
| CN103499779A (en) * | 2013-10-17 | 2014-01-08 | 国家电网公司 | UHV (Ultra High Voltage) transformer field variable frequency partial discharge test device |
| CN104345252A (en) * | 2013-08-05 | 2015-02-11 | 青岛菲特电器科技有限公司 | Inductive voltage-withstanding test power supply device of controllable reactor |
| CN104375062A (en) * | 2013-08-13 | 2015-02-25 | 青岛菲特电器科技有限公司 | Power device for controlled electric reactor induced over voltage withstand test |
| CN105137311A (en) * | 2015-10-12 | 2015-12-09 | 哈尔滨理工大学 | Dry-type air-core reactor turn-to-turn insulation electrical aging test system and test method thereof |
| CN109581165A (en) * | 2018-12-28 | 2019-04-05 | 黄江涛 | Novel cable ac voltage withstanding pilot system |
| CN110018413A (en) * | 2019-01-12 | 2019-07-16 | 广东省民防协会 | A kind of multifunctional electric ability meter |
| CN110398674A (en) * | 2019-08-30 | 2019-11-01 | 国网山西省电力公司电力科学研究院 | A kind of extra-high voltage parallel reactance is pressure-resistant and local discharge test device |
-
2008
- 2008-06-16 CN CNU2008200678062U patent/CN201203633Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866331A (en) * | 2012-09-11 | 2013-01-09 | 青海电力科学试验研究院 | In-situ local discharging test interference resistance method for converter transformer in high altitude areas |
| CN103267933A (en) * | 2013-05-02 | 2013-08-28 | 国家电网公司 | Method for measuring partial discharge in transformer induced voltage testing device |
| CN103278753A (en) * | 2013-05-02 | 2013-09-04 | 国家电网公司 | Device for induced voltage tests on transformers |
| CN104345252A (en) * | 2013-08-05 | 2015-02-11 | 青岛菲特电器科技有限公司 | Inductive voltage-withstanding test power supply device of controllable reactor |
| CN104375062A (en) * | 2013-08-13 | 2015-02-25 | 青岛菲特电器科技有限公司 | Power device for controlled electric reactor induced over voltage withstand test |
| CN103499779A (en) * | 2013-10-17 | 2014-01-08 | 国家电网公司 | UHV (Ultra High Voltage) transformer field variable frequency partial discharge test device |
| CN105137311A (en) * | 2015-10-12 | 2015-12-09 | 哈尔滨理工大学 | Dry-type air-core reactor turn-to-turn insulation electrical aging test system and test method thereof |
| CN105137311B (en) * | 2015-10-12 | 2018-01-19 | 哈尔滨理工大学 | A kind of dry-type air-core reactor turn-to-turn insulation electrical ageing test system and its test method |
| CN109581165A (en) * | 2018-12-28 | 2019-04-05 | 黄江涛 | Novel cable ac voltage withstanding pilot system |
| CN110018413A (en) * | 2019-01-12 | 2019-07-16 | 广东省民防协会 | A kind of multifunctional electric ability meter |
| CN110398674A (en) * | 2019-08-30 | 2019-11-01 | 国网山西省电力公司电力科学研究院 | A kind of extra-high voltage parallel reactance is pressure-resistant and local discharge test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20110616 |