CN201765298U - On-site partial discharge test device for extra-high voltage converter transformer - Google Patents
On-site partial discharge test device for extra-high voltage converter transformer Download PDFInfo
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- CN201765298U CN201765298U CN2010202737429U CN201020273742U CN201765298U CN 201765298 U CN201765298 U CN 201765298U CN 2010202737429 U CN2010202737429 U CN 2010202737429U CN 201020273742 U CN201020273742 U CN 201020273742U CN 201765298 U CN201765298 U CN 201765298U
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- 238000012360 testing method Methods 0.000 title claims abstract description 60
- 238000001514 detection method Methods 0.000 claims description 10
- 238000002604 ultrasonography Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 5
- 238000003384 imaging method Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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Abstract
The utility model discloses an on-site partial discharge test device for an extra-high voltage converter transformer. The output end of a variable frequency power supply (1) of the test device is connected with the low voltage side of a test transformer (2); the high voltage side of the test transformer (2) is connected with an extra-high voltage converter transformer (5); a compensating reactor (4) is connected with the extra-high voltage converter transformer (5); and the extra-high voltage converter transformer (5) is connected with a partial discharge detecting system (6), an ultrasonic positioning system (7), an ultraviolet imaging system (8) and a broadband partial discharge on-line detecting system (9) respectively. The on-site partial discharge test device has the advantages and benefits of 1. realizing the on-site partial discharge test on the extra-high voltage converter transformer at home and abroad for the first time, 2. adopting an interference identification technology and a symmetrical pressurization method to conduct the on-site partial discharge test on the extra-high voltage converter transformer for the first time, and 3. providing powerful technical support for putting the first plus or minus 800kV extra-high voltage direct-current trial project in the world into operation in advance.
Description
Technical field
The utility model relates to extra-high voltage converter power transformer site test equipment, the on-the-spot local discharge test device 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, high 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 local discharge test device of extra-high voltage converter power transformer.
Summary of the invention
The purpose of this utility model is exactly in order to overcome blank and not enough that prior art exists, to provide a kind of extra-high voltage converter power transformer on-the-spot local discharge test device.
The on-the-spot local discharge test device of described extra-high voltage converter power transformer, it is characterized in that: described test unit is provided with variable-frequency power sources, testing transformer, compensation reactor, partial discharge detecting system, ultrasound positioning system, the ultraviolet imagery system, broadband office is placed on the line detection system, the output terminal of described variable-frequency power sources is connected with the low-pressure side of testing transformer, the high-pressure side of testing transformer is connected with the extra-high voltage converter power transformer, compensation reactor is connected with the extra-high voltage converter power transformer, the extra-high voltage converter power transformer respectively with partial discharge detecting system, ultrasound positioning system, the ultraviolet imagery system, broadband office is placed on the line detection system and connects, described test unit also is provided with capacitive divider, described electric capacity depressor is connected with the testing transformer high-pressure side, is used to monitor its voltage.Described variable-frequency power sources output field voltage is at 0～1200V, and frequency is the standard sine wave of 250Hz.And by adopting compensation reactor warranty test safety.
The utlity model has following advantage and good effect:
1, at home and abroad realized first on the extra-high voltage converter power transformer, carrying out on-the-spot partial discharge test, 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, finished the on-the-spot partial discharge test of 24 extra-high voltage converter power transformers of multiple imperial extra-high voltage current conversion station, hydroelectric resources abundant for western part, cleaning is in time delivered to Shanghai provides strong guarantee, protect electricity for Expo and made contribution, obtained huge economic benefit.
Description of drawings
Fig. 1 is the utility model structural principle block scheme.
Among the figure: 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
Below in conjunction with accompanying drawing the utility model is further specified: among Fig. 1, the on-the-spot local discharge test device of described extra-high voltage converter power transformer, it is characterized in that: described test unit is provided with variable-frequency power sources 1, testing transformer 2, 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, the output terminal of described 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 extra-high voltage converter power transformer 5, compensation reactor 4 is connected with extra-high voltage converter power transformer 5, extra-high voltage converter power transformer 5 respectively with partial discharge detecting system 6, ultrasound positioning system 7, ultraviolet imagery system 8, broadband office is placed on line detection system 9 and connects.
Described test unit also is provided with capacitive divider 3, and described electric capacity depressor 3 is connected with testing transformer 2 high-pressure sides, is used to monitor its voltage.
Described variable-frequency power sources 1 output field voltage is at 0～1200V, and frequency is the standard sine wave of 250Hz.And by adopting compensation reactor 4, warranty test safety.
The course of work:
Extra-high voltage converter power transformer 5 is connected successively with ultrasound positioning system 7, detects inside, extra-high voltage converter power transformer 5 test loop and whether has discharge;
Extra-high voltage converter power transformer 5 is connected successively with ultraviolet imagery system 8, detects outside, extra-high voltage converter power transformer 5 test loop and whether has discharge;
Extra-high voltage converter power transformer 5 is placed on line detection system 9 with broadband office and is connected successively, detects extra-high voltage converter power transformer 5 whole test loops and whether has discharge;
Adopt the method for symmetry pressurization that extra-high voltage converter power transformer 5 is carried out on-the-spot partial discharge test.
Each parts is implemented parameter:
Variable-frequency power sources 1
Utilize variable-frequency power sources 1 output field voltage at 0～1200V, frequency is the standard sine wave of 250Hz, and variable-frequency power sources 1 is connected successively with testing transformer 2 low-pressure sides.
The field voltage of variable-frequency power sources 1 output rises to trial voltage by testing transformer 2.Testing transformer 2 high-pressure sides are connected successively 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.
Testing transformer 2 high-pressure sides are connected successively with capacitive divider 3, monitor trial voltage.
Compensation reactor 4
Compensation reactor 4 is connected successively with extra-high voltage converter power transformer 5 low-pressure sides, compensation extra-high voltage converter power transformer 5 low-pressure side capacity currents, warranty test safety.
Partial discharge detecting system 6
Extra-high voltage converter power transformer 5 is connected successively with partial discharge detecting system 6, measures the partial discharge quantity of extra-high voltage converter power transformer 5.
Extra-high voltage converter power transformer 5 is connected successively with ultrasound positioning system 7, detects inside, extra-high voltage converter power transformer 5 test loop and whether has discharge.
Extra-high voltage converter power transformer 5 is connected successively with ultraviolet imagery system 8, detects outside, extra-high voltage converter power transformer 5 test loop and whether has discharge.
Broadband office is placed on line detection system 9
Extra-high voltage converter power transformer 5 is placed on line detection system 9 with broadband office and is connected successively, detects extra-high voltage converter power transformer 5 whole test loops and whether has discharge.
Claims (3)
1. the on-the-spot local discharge test device of an extra-high voltage converter power transformer is characterized in that: described test unit is provided with variable-frequency power sources (1), testing transformer (2), compensation reactor (4), partial discharge detecting system (6), ultrasound positioning system (7), ultraviolet imagery system (8), broadband office and is placed on line detection system (9); The output terminal of described 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 extra-high voltage converter power transformer (5), compensation reactor (4) is connected with extra-high voltage converter power transformer (5), extra-high voltage converter power transformer (5) respectively with partial discharge detecting system (6) with ultrasound positioning system (7), with ultraviolet imagery system (8), be placed on line detection system (9) with broadband office and be connected.
2. according to the on-the-spot local discharge test device of the described extra-high voltage converter power transformer of claim 1, it is characterized in that: described test unit also is provided with capacitive divider (3), and described electric capacity depressor (3) is connected with testing transformer (2) high-pressure side.
3. the on-the-spot local discharge test device of extra-high voltage converter power transformer according to claim 1 is characterized in that: described variable-frequency power sources (1) output field voltage is at 0～1200V, and frequency is the standard sine wave of 250Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202737429U CN201765298U (en) | 2010-07-23 | 2010-07-23 | On-site partial discharge test device for extra-high voltage converter transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202737429U CN201765298U (en) | 2010-07-23 | 2010-07-23 | On-site partial discharge test device for extra-high voltage converter transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201765298U true CN201765298U (en) | 2011-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202737429U Expired - Lifetime CN201765298U (en) | 2010-07-23 | 2010-07-23 | On-site partial discharge test device for extra-high voltage converter transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201765298U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288884A (en) * | 2011-09-13 | 2011-12-21 | 华北电力大学（保定） | External insulation discharging detecting method based on ultraviolet light spots |
| 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 |
| CN106771911A (en) * | 2016-12-09 | 2017-05-31 | 广西电友科技发展有限公司 | A kind of elementary errors compensation industrial frequency withstand voltage experimental rig in parallel |
| 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 |
-
2010
- 2010-07-23 CN CN2010202737429U patent/CN201765298U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288884A (en) * | 2011-09-13 | 2011-12-21 | 华北电力大学（保定） | External insulation discharging detecting method based on ultraviolet light spots |
| 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 |
| CN106771911A (en) * | 2016-12-09 | 2017-05-31 | 广西电友科技发展有限公司 | A kind of elementary errors compensation industrial frequency withstand voltage experimental rig in parallel |
| 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 |
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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 ELECTRIC NET CROP. Effective date: 20121026 Owner name: ELECTRIC POWER RESEARCH INSTITUTE, HUBEI ELECTRIC Free format text: FORMER OWNER: HUBEI PROV. POWER TEST INST. Effective date: 20121026 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121026 Address after: 430077, 361 East Main Street, Wuchang District, Hubei, Wuhan Patentee after: Hubei Electric Power Research Institute of Power Company Patentee after: State Grid Corporation of China Address before: 430077 Hubei city of Wuhan province Wuchang Xudong Avenue No. 361 Patentee before: Hubei Prov. Power Test Inst. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |
|
| CX01 | Expiry of patent term |