CN102338844B - Method for performing on-site partial discharge test on ultrahigh voltage converter transformer - Google Patents
Method for performing on-site partial discharge test on ultrahigh voltage converter transformer Download PDFInfo
- Publication number
- CN102338844B CN102338844B CN 201010238058 CN201010238058A CN102338844B CN 102338844 B CN102338844 B CN 102338844B CN 201010238058 CN201010238058 CN 201010238058 CN 201010238058 A CN201010238058 A CN 201010238058A CN 102338844 B CN102338844 B CN 102338844B
- Authority
- CN
- China
- Prior art keywords
- voltage converter
- extra
- high voltage
- partial discharge
- converter power
- 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.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 210000002445 nipple Anatomy 0.000 claims description 8
- 238000002604 ultrasonography Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 5
- 238000010998 test method Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000002452 interceptive effect Effects 0.000 abstract 2
- 238000003384 imaging method Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
Images
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a method for performing an on-site partial discharge test on an ultrahigh voltage converter transformer. The method is characterized in that: by using a test system consisting of a variable frequency power supply (1), a test transformer (2), a capacitive divider (3), a compensating reactor (4), a partial discharge test system (6), an ultrasonic positioning system (7), an ultraviolet imaging system (8), a wideband partial discharge on-line detection system (9) and a test object ultrahigh voltage converter transformer (5), the test object ultrahigh voltage converter transformer is subjected to the on-site partial discharge test by a method of symmetrical voltage application and interfering recognition. The method has the advantages that: 1, the ultrahigh voltage converter transformer is subjected to the on-site partial discharge test at home and abroad for the first time; 2, the ultrahigh voltage converter transformer is subjected to the on-site partial dischargetest by an interfering recognition technology and the method of the symmetrical voltage application for the first time; and 3, forceful technical support is supplied to the advanced running of the first +/-800kV ultrahigh voltage direct-current demonstration project in the world.
Description
Technical field
The present invention relates to high-voltage commutation transformer field testing procedure, the on-the-spot partial discharge test method of especially a kind of extra-high voltage converter power transformer.
Background technology
± 800kV extra-high voltage direct-current transmission engineering is the present the highest DC transmission engineering of electric pressure in the world, it is unprecedented that some technical matterss wherein are not only Chinese electrical network, and be unprecedented in world's power network development history, carrying out the experimental study of extra-high voltage direct-current transmission gordian technique is the key that guarantees the engineering success.
To tame dam-Shanghai ± 800kV extra-high voltage direct-current transmission demonstration project is the major tasks of State Grid Corporation of China, is the first extra-high voltage direct-current project of transmitting and converting electricity of China.Extra-high voltage direct-current transmission has at a distance, big capacity, low-loss advantage, is the effective way that realizes that energy resources are distributed rationally, can obtain good social economy's comprehensive benefit, and is significant to ensureing the reliable supply of national energy security and electric power.
State Grid Corporation of China required 2010 to build up Xiang Jiaba-Shanghai ± 800kV extra-high voltage direct-current engineering, and as the nucleus equipment of project of transmitting and converting electricity, one of key that the extra-high voltage engineering puts into operation on schedule is that can the extra-high voltage direct-current converter power transformer possess the electric condition of sending on schedule.
The on-the-spot partial discharge test of extra-high voltage converter power transformer at home and abroad still belongs to the first time, both there be not direct applied standard, there are not comprehensive proven technique and experience can supply to use for reference yet, and site environment complexity, strict, testing equipment voltage height, capacity are big, and therefore the difficulty of test and technical requirement are far above conventional UHV (ultra-high voltage) engineering.Given this, set about having developed the on-the-spot partial discharge test method of extra-high voltage converter power transformer and test unit.
Summary of the invention
The objective of the invention is provides a kind of extra-high voltage converter power transformer on-the-spot partial discharge test method in order to overcome blank and not enough that prior art exists.
The object of the present invention is achieved like this: be placed on the line detection system by comprising by variable-frequency power sources, testing transformer, capacitive divider, compensation reactor, partial discharge detecting system, ultrasound positioning system, ultraviolet imagery system, broadband office, and the test system of subjects extra-high voltage converter power transformer composition, adopt the symmetry pressurization and disturb the method for identifying, subjects extra-high voltage converter power transformer is carried out on-the-spot partial discharge test, and concrete grammar is:
A symmetry pressurization is tested step down side with two bench teats respectively with the output terminal of variable-frequency power sources and is connected, is connected with the low-pressure side of extra-high voltage converter power transformer after connecting in the high-pressure side that two bench teats are tested transformer again, and the rated voltage of 1.5 times of extra-high voltage converter power transformers is provided;
B disturbs identification, detect inside, extra-high voltage converter power transformer test loop with ultrasound positioning system and whether have discharge, detect outside, extra-high voltage converter power transformer test loop with the ultraviolet imagery system and whether have discharge, be placed on line detection system detection extra-high voltage converter power transformer whole test loop with broadband office and whether have discharge; There is discharge if detect extra-high voltage converter power transformer test loop, then handles targetedly, it is not exerted an influence to measurement of partial discharge.
In described a symmetry pressure method, the low pressure winding two ends of extra-high voltage converter power transformer all are in noble potential, and high pressure winding one end ground connection makes the low pressure winding-to-earth capacity unequal, it is unequal that two bench teats are tested the transformer high-voltage lateral load, the voltage low phenomenon in high one side on one side occurs.In the site test, compensation reactor should be adjusted respectively, be equated until the testing transformer high side voltage.
The present invention has the following advantages and good effect:
1, at home and abroad realized first carrying out on-the-spot partial discharge test at the extra-high voltage converter power transformer, be applicable to the on-the-spot partial discharge test of all extra-high voltage converter power transformers;
2, adopt the interference recognition technology to carry out the on-the-spot partial discharge test of extra-high voltage converter power transformer at home and abroad first;
3, adopt the method for symmetry pressurization to carry out the on-the-spot partial discharge test of extra-high voltage converter power transformer at home and abroad first;
4, adopted symmetry pressurization and disturb recognition technology satisfactorily to finish the on-the-spot partial discharge test of the multiple imperial current conversion station extra-high voltage converter power transformer of extra-high voltage, in the world first ± 800kV extra-high voltage direct-current demonstration project puts into operation in advance and made huge contribution.
Description of drawings
Fig. 1 is structural principle block scheme of the present invention.
Wherein: the 1-variable-frequency power sources; The 2-testing transformer; The 3-capacitive divider; The 4-compensation reactor; 5-extra-high voltage converter power transformer; The 6-partial discharge detecting system; The 7-ultrasound positioning system; 8-ultraviolet imagery system; 9-broadband office is placed on the line detection system.
Embodiment
The present invention is further described below in conjunction with accompanying drawing: among Fig. 1, the described method of the present invention is placed on line detection system 9 by comprising by variable-frequency power sources 1, testing transformer 2, capacitive divider 3, compensation reactor 4, partial discharge detecting system 6, ultrasound positioning system 7, ultraviolet imagery system 8, broadband office, and the test system of subjects extra-high voltage converter power transformer 5 compositions, adopt the symmetry pressurization and disturb the method for identifying, subjects extra-high voltage converter power transformer is carried out on-the-spot partial discharge test, and concrete grammar is:
The pressurization of a symmetry, for extra-high voltage converter power transformer 5, because test casing and low voltage winding are not set on structural design, at the scene for preventing that corona from producing, corona can produce very big interference to measurement of partial discharge, so carry out measurement of partial discharge with the method for symmetry pressurization.Wherein: the output terminal of variable-frequency power sources 1 is tested transformer 2 low-pressure sides with two bench teats respectively and is connected, and two bench teats are connected with the low-pressure side of extra-high voltage converter power transformer 5 after testing the high-pressure side series connection of transformer 2 again, and the rated voltage of 1.5 times of extra-high voltage converter power transformers is provided;
B disturbs identification, detect inside, extra-high voltage converter power transformer 5 test loop with ultrasound positioning system 7 and whether have discharge, detect outside, extra-high voltage converter power transformer 5 test loop with ultraviolet imagery system 8 and whether have discharge, be placed on line detection system 9 detection extra-high voltage converter power transformers 5 whole test loops with broadband office and whether have discharge; There is discharge if detect extra-high voltage converter power transformer 5 test loops, then handles targetedly, it is not exerted an influence to measurement of partial discharge.
In described a symmetry pressure method, export field voltage at 0～1200V with variable-frequency power sources 1, frequency is the standard sine wave of 250Hz, variable-frequency power sources 1 is connected with testing transformer 2 low-pressure sides, capacitive divider 3 is connected with testing transformer 2 high-pressure sides, monitor trial voltage, the field voltage of frequency conversion electricity 1 output rises to trial voltage by testing transformer 2, testing transformer 2 high-pressure sides are connected with extra-high voltage converter power transformer 5 low-pressure sides, provide the extra-high voltage converter power transformer 5 low-pressure side trial voltages, with compensation reactor 4 compensation extra-high voltage converter power transformers 5 low-pressure side capacity currents, warranty test safety.
The low pressure winding two ends of extra-high voltage converter power transformer 5 all are in noble potential, and high pressure winding one end ground connection makes the low pressure winding-to-earth capacity unequal, and it is unequal that two bench teats are tested transformer 2 high-pressure side loads, the voltage low phenomenon in high one side on one side occurs.In the site test, compensation reactor 4 should be adjusted respectively, be equated until testing transformer 2 high side voltage.
Described test system connects as follows, the output terminal of variable-frequency power sources 1 is connected with the low-pressure side of testing transformer 2, the high-pressure side of testing transformer 2 is connected with the low-pressure side of extra-high voltage converter power transformer 5, compensation reactor 4 is connected with the low-pressure side of extra-high voltage converter power transformer 5, and extra-high voltage converter power transformer 5 is placed on line detection system 9 with partial discharge detecting system 6, ultrasound positioning system 7, ultraviolet imagery system 8 and broadband office respectively and is connected.
Each parameters of operating part:
1, variable-frequency power sources 1
Rated capacity: 800kVA
Rated voltage: 1035V (phase voltage 598V)
Rated frequency: 250Hz (synchronously)
Power factor :≤0.5 (hysteresis)
The number of phases: three-phase (but two-phase or single-phase output)
Outlet method: 6 ends are drawn
The mode of connection: can connect into △, Y, V, Z-shaped
Irregularity of wave form :≤3%
The class of insulation: stator F level, rotor F level
The method of operation: allow oepration at full load 60min
Rated revolution: 1500r/min (synchronously)
Voltage adjusting range: 10～100% rated voltages
2, testing transformer 2
Model: YDQW 800kVA/180kV
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
3, compensation reactor 4
Rated voltage: 35kV
Rated current: 25A, 10A, 5A
Rated capacity: 350kVar (8), 175kVar (10)
Maximum operating voltage: 52.5kV
Maximum operating currenbt: 15A, 7.5A
The linearity: when 0%～150% rated voltage, its volt-ampere characteristic is linear
Partial discharge quantity: at maximum operating voltage, the partial discharge quantity≤100pC of HV Terminal
4, other parts are the function instrument.
Claims (1)
1. the on-the-spot partial discharge test method of an extra-high voltage converter power transformer, by comprising by variable-frequency power sources (1), testing transformer (2), capacitive divider (3), compensation reactor (4), partial discharge detecting system (6), ultrasound positioning system (7), ultraviolet imagery system (8), broadband office is placed on line detection system (9), and the test system of subjects extra-high voltage converter power transformer (5) composition, adopt the symmetry pressurization and disturb the method for identifying, subjects extra-high voltage converter power transformer is carried out on-the-spot partial discharge test, it is characterized in that, the method of described symmetry pressurization is the output terminal of variable-frequency power sources (1) to be tested transformer (2) low-pressure side with two bench teats respectively be connected, two bench teats are connected with the low-pressure side of extra-high voltage converter power transformer (5) after testing the high-pressure side series connection of transformer (2) again, and the rated voltage of (5) 1.5 times of extra-high voltage converter power transformers is provided; The method of described interference identification is to detect extra-high voltage converter power transformer (5) inside, test loop with ultrasound positioning system (7) whether to have discharge, detect extra-high voltage converter power transformer (5) outside, test loop with ultraviolet imagery system (8) and whether have discharge, be placed on line detection system (9) detection extra-high voltage converter power transformer (5) whole test loop with broadband office and whether have discharge; There is discharge if detect extra-high voltage converter power transformer (5) test loop, then handles targetedly, it is not exerted an influence to measurement of partial discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010238058 CN102338844B (en) | 2010-07-23 | 2010-07-23 | Method for performing on-site partial discharge test on ultrahigh voltage converter transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010238058 CN102338844B (en) | 2010-07-23 | 2010-07-23 | Method for performing on-site partial discharge test on ultrahigh voltage converter transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102338844A CN102338844A (en) | 2012-02-01 |
| CN102338844B true CN102338844B (en) | 2013-09-11 |
Family
ID=45514675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010238058 Expired - Fee Related CN102338844B (en) | 2010-07-23 | 2010-07-23 | Method for performing on-site partial discharge test on ultrahigh voltage converter transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102338844B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944776B (en) * | 2012-10-30 | 2013-12-25 | 苏州华电电气股份有限公司 | Moving test system for characteristics of transformer based on single-phase high-voltage variable-frequency power source parallel operation |
| CN104020398B (en) * | 2014-06-03 | 2017-01-04 | 华北电力大学 | A kind of converter power transformer Partial Discharge feature extracting method |
| 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 |
| CN104502813A (en) * | 2014-11-26 | 2015-04-08 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Converter transformer symmetrical pressurization partial discharge test circuit |
| CN105527552B (en) * | 2015-12-24 | 2018-04-03 | 河南宏博测控技术有限公司 | The detection method of taiwan area discharge fault detection device based on acoustooptic technique |
| CN110456236A (en) * | 2019-07-19 | 2019-11-15 | 中国铁建电气化局集团有限公司 | Railway traction transformer shelf depreciation handover property test 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2884788B2 (en) * | 1991-02-15 | 1999-04-19 | 富士電機株式会社 | Partial discharge measuring device for resin mold transformer |
| CN101201363A (en) * | 2007-12-14 | 2008-06-18 | 湖北省电力试验研究院 | Current conversion transformer induction pressure test supply apparatus and method for measurement of partial discharge thereof |
| CN101294985A (en) * | 2008-06-16 | 2008-10-29 | 湖北省电力试验研究院 | Power supply device for controllable reactor induction voltage-resistant experiment and its partial discharging measurement method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4319084B2 (en) * | 2004-04-16 | 2009-08-26 | 富士電機システムズ株式会社 | Discharge detection device |
-
2010
- 2010-07-23 CN CN 201010238058 patent/CN102338844B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2884788B2 (en) * | 1991-02-15 | 1999-04-19 | 富士電機株式会社 | Partial discharge measuring device for resin mold transformer |
| CN101201363A (en) * | 2007-12-14 | 2008-06-18 | 湖北省电力试验研究院 | Current conversion transformer induction pressure test supply apparatus and method for measurement of partial discharge thereof |
| CN101294985A (en) * | 2008-06-16 | 2008-10-29 | 湖北省电力试验研究院 | Power supply device for controllable reactor induction voltage-resistant experiment and its partial discharging measurement method |
Non-Patent Citations (7)
| Title |
|---|
| 1000kV变压器局部放电测量的长时感应耐压现场试验;胡晓岑等;《电网技术》;20090531;第33卷(第10期);第34-37页 * |
| JP特开2005-308417A 2005.11.04 |
| 变压器局部放电在线检测的现状及发展;张言苍等;《继电器》;20041106;第32卷(第22期);第70-75页 * |
| 吴云飞等.特大型电力变压器现场局部放电测量技术研究.《变压器》.2010,第47卷(第4期),第29-31,40页. |
| 张言苍等.变压器局部放电在线检测的现状及发展.《继电器》.2004,第32卷(第22期),第70-75页. |
| 特大型电力变压器现场局部放电测量技术研究;吴云飞等;《变压器》;20100430;第47卷(第4期);第29-31,40页 * |
| 胡晓岑等.1000kV变压器局部放电测量的长时感应耐压现场试验.《电网技术》.2009,第33卷(第10期),第34-37页. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102338844A (en) | 2012-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102338844B (en) | Method for performing on-site partial discharge test on ultrahigh voltage converter transformer | |
| 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 | |
| CN101201363A (en) | Current conversion transformer induction pressure test supply apparatus and method for measurement of partial discharge thereof | |
| CN203217005U (en) | Converter transformer no-load test schematic wiring diagram | |
| CN102590717B (en) | Withstand voltage testing method for geographic information system (GIS) | |
| CN103558573A (en) | Performance testing method for voltage transformer | |
| CN103884933A (en) | Temperature rise test method for large transformer | |
| CN103308826A (en) | Integrated alternating current withstand voltage testing device | |
| CN102288880A (en) | Frequency-changing resonant withstand voltage testing device | |
| CN106959405A (en) | The electrical quantity of extra-high voltage GIS major loop Insulation Test and test capability computational methods | |
| CN202057764U (en) | Variable frequency resonance voltage withstand test device | |
| CN201765298U (en) | On-site partial discharge test device for extra-high voltage converter transformer | |
| CN102193051A (en) | Field local discharge testing device and method of 1000 kV alternating current extra-high voltage transformer | |
| CN106856373A (en) | A kind of harmonic wave generation device | |
| CN104808022A (en) | Temperature rise test connection method for three-side combined operation of three-phase three-winding transformer | |
| CN104714158A (en) | Alternating-current ultrahigh voltage main transformer and regulation transformer combined partial discharge testing system and method | |
| CN104158363A (en) | Double-fed induction generator model | |
| CN201464604U (en) | Partial discharge test device for potable dry power transformer | |
| CN206892261U (en) | Alternating current withstand voltage test device for overhead line | |
| CN104793116A (en) | Voltage withstand test device for large-capacity equipment | |
| CN205263208U (en) | Many function test platform | |
| CN204613387U (en) | For the electric supply installation that current transformer detects | |
| CN203011964U (en) | Resonance test device | |
| CN202522641U (en) | Efficiency testing device for low voltage generator changed from high voltage generator of rural hydropower station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: THE ELECTRIC POWER SCIENCE RESEARCH INSTITUTE OF H Free format text: FORMER OWNER: HUBEI PROV. POWER TEST INST. Effective date: 20121018 Owner name: STATE ELECTRIC NET CROP. Effective date: 20121018 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121018 Address after: 430077, 361 East Main Street, Wuchang District, Hubei, Wuhan Applicant after: HUBEI ELECTRIC POWER Research Institute Applicant after: State Grid Corporation of China Address before: 430077 Hubei city of Wuhan province Wuchang Xudong Avenue No. 361 Applicant before: Hubei Electric Power Testing & Research Institute |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 |