CN101201363A - Current conversion transformer induction pressure test supply apparatus and method for measurement of partial discharge thereof - Google Patents
Current conversion transformer induction pressure test supply apparatus and method for measurement of partial discharge thereof Download PDFInfo
- Publication number
- CN101201363A CN101201363A CNA2007101689187A CN200710168918A CN101201363A CN 101201363 A CN101201363 A CN 101201363A CN A2007101689187 A CNA2007101689187 A CN A2007101689187A CN 200710168918 A CN200710168918 A CN 200710168918A CN 101201363 A CN101201363 A CN 101201363A
- Authority
- CN
- China
- Prior art keywords
- transformer
- voltage
- converter power
- partial discharge
- power transformer
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a power supply device of the induction withstanding voltage test on the converter transformer and a measurement method of partial discharges thereof, and relates to a in-site test technology of the converter transformer. The structure of the device is that an asynchronous motor (1), a brushless medium-frequency synchronous generator (2), an intermediate transformer (3) and a converter transformer (7) are connected successively for providing the test power supply of the converter transformer (7). The converter transformer (7), detecting impedance (6) and a partial discharge test device (8) are connected successively for detecting the partial discharge amount of the converter transformer (7). The intermediate transformer (3), a capacitive voltage divider (4) and a voltmeter (5) are connected successively for measuring the test voltage of the intermediate transformer (3). A compensation reactor (9) is connected to the converter transformer (7) for compensating the reactive current of the converter transformer (7). The invention is suitable for the induction withstanding voltage test of all converter transformers and measurement of the partial discharges thereof.
Description
Technical field
The present invention relates to a kind of converter power transformer site test technology, relate in particular to a kind of current conversion transformer induction pressure test supply apparatus and method for measurement of partial discharge thereof.
Background technology
In recent years, the application of measurement of partial discharge technology on power transformer impels design of transformer and workmanship to be significantly improved.According to national Specification, to the power transformer of 220kV and above electric pressure, partial discharge test is requisite routine test project.Facts have proved that many defective transformers can be found in partial discharge test, and before dispatching from the factory, obtain handling, thereby eliminated hidden danger, reduced interruption of service.According to the regulation of GB GB50150-2006 " Erection works of electrical installations Standard for handover test of electric equipment ", the 500kV power transformer should carry out partial discharge test when commissioning test.Can this test is the harsh service condition of analogue transformer more practically, detect dispatch from the factory back and have or not insulation harm in installation process of transformer more delicately, and throw one of important criterion of robot system as the back transformer is installed.Therefore, on-the-spot partial discharge test is accepted by people, but the difficulty of on-the-spot partial discharge test mainly is power supply, compensation and anti-interference problem etc. more than big many of laboratory examination.
Three in the recent period newly-built (gorges)-wide (east), three (gorges)-go up in (sea), three (gorge)-Chang direct current electric transmission and transformation engineerings such as (states), the converter power transformer that adopts is the single-phase Y/Y of Yi Santai and three Y/Y-Δ transformer group that the Y/ Δ is formed, according to GB GB50150-2006 and State Grid Corporation of China's " transformer anti-accident measures " requirement, should carry out partial discharge test at the scene, especially transformer is collided in transit, for checking that whether the inner device body of transformer exists displacement and distortion and the collision influence to insulation system, is badly in need of a kind of current conversion transformer induction pressure test supply apparatus of development.
Existing converter power transformer is not provided with test casing and low voltage winding on structural design, can't respond to withstand voltage and measurement of partial discharge with the low pressure excitation at the scene.Therefore, necessarily require a cover induction pressure test supply apparatus, apply voltage, make winding inter-turn and high pressure winding termination reach the requirement of trial voltage over the ground from valve side △ winding or Y winding.
Summary of the invention
Purpose of the present invention is exactly in order to overcome the shortcoming and defect that prior art exists, a kind of current conversion transformer induction pressure test supply apparatus and method for measurement of partial discharge thereof to be provided.
The object of the present invention is achieved like this:
One, current conversion transformer induction pressure test supply apparatus (being called for short this device)
As Fig. 1, this device comprises converter power transformer (7), is provided with asynchronous motor (1), brushless intermediate frequency synchronous generator (2), intermediate transformer (3), capacitive divider (4), voltage table (5), detects impedance (6), instrument for measuring partial discharge (8), compensation reactor (9);
Asynchronous motor (1), brushless intermediate frequency synchronous generator (2), intermediate transformer (3), converter power transformer (7) connect successively, for converter power transformer (7) provides experiment power supply;
Converter power transformer (7), detection impedance (6), instrument for measuring partial discharge (8) connect successively, detect the partial discharge quantity of converter power transformer (7);
Intermediate transformer (3), capacitive divider (4), voltage table (5) connect successively, measure the trial voltage of intermediate transformer (3);
Compensation reactor (9) is connected with converter power transformer (7), the reactive current of compensation converter power transformer (7).
This device principle of work:
Utilize 250Hz, 560kVA, 0～1000V is brushless intermediate frequency synchronous generator (2) and intermediate transformer (3) be as experiment power supply, adopt compensation reactor (9) compensation, make brushless intermediate frequency synchronous generator (2) be in perceptual operating mode, in case brushless intermediate frequency synchronous generator (2) self-excitation, voltage occurs and raise, guarantee the safety of the steady and tested converter power transformer of voltage (7).Intermediate transformer (3) makes tested converter power transformer (7) net side winding test voltage reach 1.5U to the valve side winding symmetry pressurization of tested converter power transformer (7)
mIn the screen number of winning the confidence of the net side bushing of tested converter power transformer (7) end, be sent to instrument for measuring partial discharge (8) by cable after in detecting impedance (6), carrying out data processing and analyze.
This device has realized carrying out presence on the converter power transformer (7) at no test casing at home first should withstand voltage and partial discharge test.
Two, current conversion transformer induction pressure test supply apparatus method for measurement of partial discharge (abbreviation this method)
This method comprises the following steps:
1. adopt the intermediate frequency generator group to make the single-phase output voltage of power supply and supply with two with SF
6Gas is that the intermediate transformer (3) of insulating medium boosts, and compensates tested converter power transformer (7) capacitive reactive power with compensation reactor (9);
Described intermediate frequency generator group is connected jointly with brushless intermediate frequency synchronous generator (2) by asynchronous motor (1) and forms, and the trial voltage of 250Hz is provided as experiment power supply;
2. at trial voltage 1.5U
mDown, with 20～22 compensation reactors (9) series and parallel use arbitrarily on insulating support;
3. adopt intermediate transformer (3), capacitive divider (4), voltage table (5) to be connected converter power transformer (7) valve side and monitor the trial voltage that is applied;
4. in the screen number of winning the confidence of the net side bushing of converter power transformer (7) end, be sent to instrument for measuring partial discharge (8) by cable after in detecting impedance (6), carrying out data processing and analyze;
5. between intermediate transformer (3) and capacitive divider (4), between intermediate transformer (3) and converter power transformer (7), connect with the aluminium foil bellows respectively, prevent corona;
6. must under low-voltage, be debugged in the site test;
When 7. adopting symmetrical pressuring method, the valve side winding two ends of converter power transformer (7) all are in noble potential, and net side winding one end ground connection makes valve side winding-to-earth capacity unequal, two intermediate transformers (3) load does not wait, and occurs the high low phenomenon of voltage on one side on one side; In the site test, compensation reactor (9) should be adjusted respectively, be equated to rise to standard synchronously until intermediate transformer (3) voltage.
The present invention has the following advantages and good effect:
1. for converter power transformer (7),, can't respond to withstand voltage and measurement of partial discharge with the low pressure excitation at the scene because of test casing and low voltage winding are not set on structural design.This supply unit proves through site test, adopts SF
6Gas does not have dizzy intermediate transformer (3) and compensation reactor (9) and intermediate frequency generator group as test power device, on the converter power transformer (7) of no test casing, carry out presence should be withstand voltage and partial discharge test be feasible.
2. adopt high voltage to carry out converter power transformer office from valve 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 converter power transformers.
Description of drawings
Fig. 1 is that this device is formed block scheme;
Fig. 2 is this device generator unit structure synoptic diagram.
Wherein:
The 1-asynchronous motor, 1.1-master's motor, 1.2-auxiliary motor;
2-is brushless intermediate frequency synchronous generator;
The 3-intermediate transformer;
The 4-capacitive divider;
The 5-voltage table;
6-detects reactance;
The 7-converter power transformer;
8-instrument for measuring partial discharge;
The 9-compensation reactor.
Embodiment
Further specify below in conjunction with drawings and Examples:
One, this device
As Fig. 1, this device comprises converter power transformer (7), is provided with asynchronous motor (1), brushless intermediate frequency synchronous generator (2), intermediate transformer (3), capacitive divider (4), voltage table (5), detects impedance (6), instrument for measuring partial discharge (8), compensation reactor (9).
Two, this installs each parts
1, asynchronous motor (1)
Asynchronous motor (1) comprises main motor (1.1) and auxiliary motor (1.2) two parts, auxiliary motor (1.2) drags main motor (1.1) to the back is out of service synchronously with generator (2) as actuating motor, by main motor (1.1) drawing generator (2) operation, see Fig. 2 then.
* main motor (1.1) parameter is as follows:
Model: JS2400M2-4
The number of phases: 3
Power: 320kW
Frequency: 50Hz
Voltage: 380V
Electric current: 560A
Connection: Δ
Rotating speed: 1482r/min
Ring temperature: 40 ℃
The class of insulation: B
Weight: 1580kg
* auxiliary motor (1.2) parameter is as follows:
Model: Y160L-4
Output power: 15kW
Input voltage: 380V
Input current: 30.3A
Rotating speed: 1460r/min
Connection: Δ
The class of insulation: B
Frequency: 50Hz
Weight: 149kg
2, brushless intermediate frequency synchronous generator (2)
Brushless intermediate frequency synchronous generator (2) carries out excitation by exciter, and the trial voltage of output 250Hz, single-phase 0-1000V is to intermediate transformer (3).
Brushless intermediate frequency synchronous generator (2) parameter is as follows:
Model: TFWZP560/250
Rated power: 560kVA
Rated voltage: 690/400V
The class of insulation: F
The number of phases: 3
Power factor: 0.4-0.5 lags behind
Rated frequency: 250Hz
Rated current: 468.6A
Connection: Y
Degree of protection: ZP10
Rated speed: 1500r/min
Weight: 2000kg
Exciter rated excitation voltage: 50V
Exciter rated exciting current: 10A
3, intermediate transformer (3)
Intermediate transformer (3) is with SF
6Gas is the 180kV/2 * 500V of insulating medium, and capacity is the step-up transformer of 800kVA.Valve side winding symmetry pressurization to tested converter power transformer (7).
1. intermediate transformer (3) parameter is 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 (3) has carried out 1.1U by technical requirement
NBe 200kV induced over voltage withstand test in 5 minutes and 1.0U
NUnder local discharge test and following 1 hour temperature rise test of rated short circuit current.
4, compensation reactor (9)
* compensation reactor (9) is by 6 250kVar/15kV compensation reactors, and 18 100kVar/15kV compensation reactors reach 6 50kVar/15kV compensation reactors and form.At 1.5U
mDown, compensation reactor (9) is linear.Compensation reactor (9) is furnished with insulating support, withstand voltage 95kV, and according to trial voltage and current requirements, series and parallel uses arbitrarily.
The close 0.7T of compensation reactor (9) magnetic adopts the DQ122-30 siliconized plate, and process characteristic is that core lamination stack is taked full bias seam, uses epoxy cement between sheet, reduces noise;
Iron core gap is distributed on the twin columns, and the BK-50/15 type has 2 9mm gaps, and the BK-100/15 type has 2 12mm gaps, section polishing and acid etching, gap liner high resiliency insulating material.The wireless adhesive tape of iron core, iron Drag link tightener, whole iron core and yoke full-shield ground connection;
Coil turn voltage 5-9V/ circle, electric close 3A/mm
2, adopt vacuum paint dipping, for reducing the wastage and eliminating local overheating, end turn bakelite pressing plate;
Fuel tank uses low magnetic conduction steel, and case lid is drawn with epoxy insulating board, single sleeve pipe or two sleeve pipe.
* compensation reactor (9) parameter is as follows:
1. the single-phase 250Hz of model: BK-100/15
Temperature rise: 75
Device category: outdoor type
The type of cooling: ONAN
Partial discharge quantity: during 1.3Ue≤50pc
Saturation coefficient 〉=1.3 times
2 hours working times
Capacity (kvar) voltage (V) electric current (A)
100 15000 6.67
2. the single-phase 250Hz of model: BK-50/15
Temperature rise: 55
Device category: outdoor type
The type of cooling: ONAN
Partial discharge quantity: during 1.3Ue≤50pc
Saturation coefficient 〉=1.3 times
2 hours working times
Capacity (kvar) voltage (V) electric current (A)
50 15000 3.33
3. the single-phase 250Hz of model: BK-250/15
Temperature rise: 55
Device category: outdoor type
The type of cooling: ONAN
Partial discharge quantity: during 1.3Ue≤50pc
Saturation coefficient 〉=1.3 times
2 hours working times
Capacity (kvar) voltage (V) electric current (A)
250 15000 16.6
Claims (3)
1. a current conversion transformer induction pressure test supply apparatus comprises converter power transformer (7); It is characterized in that:
Be provided with asynchronous motor (1), brushless intermediate frequency synchronous generator (2), intermediate transformer (3), capacitive divider (4), voltage table (5), detect impedance (6), instrument for measuring partial discharge (8), compensation reactor (9);
Asynchronous motor (1), brushless intermediate frequency synchronous generator (2), intermediate transformer (3), converter power transformer (7) connect successively, for converter power transformer (7) provides experiment power supply;
Converter power transformer (7), detection impedance (6), instrument for measuring partial discharge (8) connect successively, detect the partial discharge quantity of converter power transformer (7);
Intermediate transformer (3), capacitive divider (4), voltage table (5) connect successively, measure the trial voltage of intermediate transformer (3);
Compensation reactor (9) is connected with converter power transformer (7), the reactive current of compensation converter power transformer (7).
2. by the described a kind of current conversion transformer induction pressure test supply apparatus of claim 1, it is characterized in that:
Asynchronous motor (1) comprises main motor (1.1) and auxiliary motor (1.2) two parts, auxiliary motor (1.2) drags main motor (1.1) to the back is out of service synchronously with brushless intermediate frequency synchronous generator (2) as actuating motor, is moved by main motor (1.1) drawing generator (2) then.
3. a current conversion transformer induction pressure test supply apparatus method for measurement of partial discharge is characterized in that comprising the following steps:
1. adopt the intermediate frequency generator group to make the single-phase output voltage of power supply and supply with two with SF
6Gas is that the intermediate transformer (3) of insulating medium boosts, and compensates tested transformer (7) capacitive reactive power with compensation reactor (9);
Described intermediate frequency generator group is connected jointly with brushless intermediate frequency synchronous generator (2) by asynchronous motor (1) and forms, and the trial voltage of 250Hz is provided as experiment power supply;
2. at trial voltage 1.5U
mDown, with 20～22 compensation reactors (9) series and parallel use arbitrarily on insulating support;
3. adopt intermediate transformer (3), capacitive divider (4), voltage table (5) to be connected converter power transformer (7) valve side and monitor the trial voltage that is applied;
4. in the screen number of winning the confidence of the net side bushing of converter power transformer (7) end, be sent to instrument for measuring partial discharge (8) by cable after in detecting impedance (6), carrying out data processing and analyze;
5. between intermediate transformer (3) and capacitive divider (4), between intermediate transformer (3) and converter power transformer (7), connect with the aluminium foil bellows respectively, prevent corona;
6. must under low-voltage, be debugged in the site test;
When 7. adopting symmetrical pressuring method, the valve side winding two ends of converter power transformer (7) all are in noble potential, and net side winding one end ground connection makes valve side winding-to-earth capacity unequal, 2 intermediate transformers (3) load does not wait, and occurs the high low phenomenon of voltage on one side on one side; In the site test, compensation reactor (9) should be adjusted respectively, be equated to rise to standard synchronously until intermediate transformer (3) voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101689187A CN101201363A (en) | 2007-12-14 | 2007-12-14 | Current conversion transformer induction pressure test supply apparatus and method for measurement of partial discharge thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101689187A CN101201363A (en) | 2007-12-14 | 2007-12-14 | Current conversion transformer induction pressure test supply apparatus and method for measurement of partial discharge thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101201363A true CN101201363A (en) | 2008-06-18 |
Family
ID=39516629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101689187A Pending CN101201363A (en) | 2007-12-14 | 2007-12-14 | Current conversion transformer induction pressure test supply apparatus and method for measurement of partial discharge thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101201363A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833055A (en) * | 2010-05-07 | 2010-09-15 | 国家电网公司直流建设分公司 | Method and system for testing low pressure increase of converter valve equipment |
| 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 |
| CN102303554A (en) * | 2011-05-31 | 2012-01-04 | 苏州华电电气股份有限公司 | Partial discharge and withstand voltage test vehicle for power transformer |
| CN102338844A (en) * | 2010-07-23 | 2012-02-01 | 湖北省电力试验研究院 | Method for performing on-site partial discharge test on ultrahigh voltage converter transformer |
| 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 |
| CN102187543B (en) * | 2008-10-20 | 2013-10-23 | 西门子公司 | Apparatus and method for reactive power compensation of test transformer |
| CN104181445A (en) * | 2014-08-12 | 2014-12-03 | 云南电力试验研究院（集团）有限公司电力研究院 | Converter transformer double side voltage applying partial discharge testing device and testing method thereof |
| 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 |
| CN106461722A (en) * | 2014-05-21 | 2017-02-22 | 西门子公司 | Circuit arrangement for high-voltage test system |
| CN109581168A (en) * | 2019-01-25 | 2019-04-05 | 云南电力技术有限责任公司 | A kind of converter power transformer In situ DC partial discharge test system and method |
| CN110780163A (en) * | 2019-10-22 | 2020-02-11 | 中国电力科学研究院有限公司 | Direct-current withstand voltage test device and method for extra-high voltage converter transformer |
| CN116593845A (en) * | 2023-07-06 | 2023-08-15 | 江苏安靠智能输电工程科技股份有限公司 | Transformer and GIS equipment test device |
-
2007
- 2007-12-14 CN CNA2007101689187A patent/CN101201363A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102187543B (en) * | 2008-10-20 | 2013-10-23 | 西门子公司 | Apparatus and method for reactive power compensation of test transformer |
| 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 |
| CN101833055B (en) * | 2010-05-07 | 2013-05-08 | 国家电网公司直流建设分公司 | Method and system for testing low pressure increase of converter valve equipment |
| CN101833055A (en) * | 2010-05-07 | 2010-09-15 | 国家电网公司直流建设分公司 | Method and system for testing low pressure increase of converter valve equipment |
| CN102338844B (en) * | 2010-07-23 | 2013-09-11 | 湖北省电力公司电力科学研究院 | Method for performing on-site partial discharge test on ultrahigh voltage converter transformer |
| CN102338844A (en) * | 2010-07-23 | 2012-02-01 | 湖北省电力试验研究院 | Method for performing on-site partial discharge test on ultrahigh voltage converter transformer |
| CN102303554A (en) * | 2011-05-31 | 2012-01-04 | 苏州华电电气股份有限公司 | Partial discharge and withstand voltage test vehicle for power transformer |
| 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 |
| CN106461722A (en) * | 2014-05-21 | 2017-02-22 | 西门子公司 | Circuit arrangement for high-voltage test system |
| CN106461722B (en) * | 2014-05-21 | 2020-12-04 | 西门子公司 | Circuit arrangement for high-voltage test equipment |
| US11112446B2 (en) | 2014-05-21 | 2021-09-07 | Siemens Aktiengesellschaft | Circuit arrangement for a high-voltage test installation |
| CN104181445A (en) * | 2014-08-12 | 2014-12-03 | 云南电力试验研究院（集团）有限公司电力研究院 | Converter transformer double side voltage applying partial discharge testing device and testing method thereof |
| CN109581168A (en) * | 2019-01-25 | 2019-04-05 | 云南电力技术有限责任公司 | A kind of converter power transformer In situ DC partial discharge test system and method |
| CN110780163A (en) * | 2019-10-22 | 2020-02-11 | 中国电力科学研究院有限公司 | Direct-current withstand voltage test device and method for extra-high voltage converter transformer |
| CN116593845A (en) * | 2023-07-06 | 2023-08-15 | 江苏安靠智能输电工程科技股份有限公司 | Transformer and GIS equipment test device |
| CN116593845B (en) * | 2023-07-06 | 2023-12-05 | 江苏安靠智能输电工程科技股份有限公司 | Transformer and GIS equipment test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101201363A (en) | Current conversion transformer induction pressure test supply apparatus and method for measurement of partial discharge thereof | |
| CN101294985B (en) | Power supply device for controllable reactor induction voltage-resistant experiment and its partial discharging measurement method | |
| CN201203633Y (en) | Power supply device for controllable inductor induction voltage-resistant experiment | |
| CN101464489B (en) | Industrial frequency inductance-regulation resonance pressure-resistant method | |
| CN101833043B (en) | Method for measuring electric capacity and dielectric loss of capacitance type voltage transformer | |
| CN101477183A (en) | Intelligent non-partial discharge extra-high voltage sine-wave modulation pressure-resistant apparatus | |
| CN102338844B (en) | Method for performing on-site partial discharge test on ultrahigh voltage converter transformer | |
| CN107015077A (en) | A kind of deformation of transformer winding analogue means | |
| CN109521339B (en) | Power frequency parallel resonance voltage withstand test method based on non-full compensation | |
| CN108459249A (en) | The extra-high voltage GIL alternating-current voltage resistance test devices and method of controllable saturation reactance | |
| CN103336260B (en) | System for checking voltage transformer in GIS (gas insulated switchgear) | |
| CN109164363A (en) | A kind of 1000kV reactor local discharge test device and method | |
| CN102288880A (en) | Frequency-changing resonant withstand voltage testing device | |
| CN207067321U (en) | High altitude localities 750kV shunt reactor Partial Discharge Testing on Site devices | |
| CN107436399A (en) | High altitude localities 750kV shunt reactor local discharge test devices | |
| CN103337351B (en) | High-voltage automatic electrified adjustable reactor | |
| CN102193051A (en) | Field local discharge testing device and method of 1000 kV alternating current extra-high voltage transformer | |
| CN206876809U (en) | A kind of device of analogue transformer turn-to-turn short circuit shelf depreciation | |
| CN206920546U (en) | A kind of wiring construction of low-pressure side two-winding transformer partial discharge test | |
| CN107037333A (en) | A kind of wiring construction of low-pressure side two-winding transformer partial discharge test | |
| CN206892261U (en) | A kind of alternating-current voltage resistance test device for overhead transmission line | |
| CN201229847Y (en) | Weak output capacitor type voltage mutual inductor | |
| CN203338959U (en) | High-voltage automatic electrified adjustable reactor | |
| CN108732476A (en) | A kind of local discharge test system with anti-interference transformer | |
| CN112098783A (en) | Long-distance GIL field test method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20090320 Address after: 361, Xu Dong Street, Wuhan, Hubei, Wuchang, China: 430077 Applicant after: Hubei electric power test and Research Institute Co-applicant after: Hubei Zhongxing Electric Power Experiment Research Co., Ltd. Address before: 361, Xu Dong Street, Wuhan, Hubei, Wuchang, China: 430077 Applicant before: Hubei Prov. Power Test Inst. |
|
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080618 |