CN204228895U - A kind of series compensation platform fast transient overvoltage simulation experiment system - Google Patents
A kind of series compensation platform fast transient overvoltage simulation experiment system Download PDFInfo
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- CN204228895U CN204228895U CN201420701917.XU CN201420701917U CN204228895U CN 204228895 U CN204228895 U CN 204228895U CN 201420701917 U CN201420701917 U CN 201420701917U CN 204228895 U CN204228895 U CN 204228895U
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- transient overvoltage
- voltage
- experiment system
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- 238000004088 simulation Methods 0.000 title claims abstract description 40
- 230000001052 transient effect Effects 0.000 title claims abstract description 31
- 238000012360 testing method Methods 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 238000013016 damping Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 6
- 239000012212 insulator Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 6
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000011160 research Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
Abstract
The utility model provides a kind of series compensation platform fast transient overvoltage simulation experiment system, comprises direct supply, disconnector, simulation string benefit device and analogue ground line; Described direct supply one end ground connection, the other end mends device by described disconnector connecting analog string, and described simulation string mends device by analogue ground line ground connection.The utility model can provide the mode of connection similar with actual condition and the method for operation, and this test loop is simple, flexible, the over-voltage condition that efficient emulation gap breakdown produces, by this pilot system, correctness and the validity of the pressure limiting measure of simulation result and applying can be verified, grasp the characteristic of this fast transient overvoltage better.
Description
Technical field
The utility model belongs to electric power experimental technique field, is specifically related to a kind of series compensation platform fast transient overvoltage simulation experiment system.
Background technology
Series compensation (being called for short string to mend) technology is series capacitor device group on long-distance and large-capacity power transmission circuit, effectively offsets partial line road feel and resists, thus effectively improve the stability of super system for ultra-high voltage transmission, increase circuit transmission capacity.
From calendar year 2001, my unit independent research transmission line of alternation current series compensation set of equipments, current all devices realizes production domesticization, and has independent intellectual property right.
2004, the head of development overlapped domestic 220kV string and mends device hanging net operation, the domestic Chuan Bujunshi importer external equipment put into operation before this.2006, the head of development overlapped domestic 500kV string and mends device hanging net operation.2011, the head of development overlapped domestic 1000kV extra-high voltage series compensation device hanging net operation, and this is that head overlaps extra-high voltage series compensation device in the world.
String is mended in the debug process of device and in follow-up operation process at home, no matter mend in device in domestic string benefit or the string provided abroad, when serial supplementary line generation earth fault makes sparking distance puncture moment, all there is platform electric current, and cause damage or SI semi-insulation to cause phenomenons such as puncturing to weak current equipment on platform sometimes.This problems affect string mends the reliability service of device, and so far there are no carried out research to domestic and international other unit to this.
In recent years, the UHV (ultra-high voltage) string put into operation in China was mended in device, and some engineering is accepted by offshore company, and series compensation platform structure wherein and equipment layout are also designed by external a few company.Abroad in company, only have ABB, SIEMENS, GE Deng Ji company can mend device to string and carry out the integrated supply of material, and all have Practical Project to put into operation in China.Domestic except China Electric Power Research Institute and CLP Purui Technology Co., Ltd (former be under the jurisdiction of China Electric Power Research Institute), also do not have other unit autonomous Design exploitation string to mend complete equipment at present.
Mend in plant running and debug process at string, when sparking distance punctures, once to occur on platform the phenomenons such as low-voltage equipment insulation breakdown.Have no abroad research unit before this and research report is carried out to this problem.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of series compensation platform fast transient overvoltage simulation experiment system, the mode of connection similar with actual condition and the method for operation can be provided, and this test loop is simple, flexible, the over-voltage condition that efficient emulation gap breakdown produces, by this pilot system, correctness and the validity of the pressure limiting measure of simulation result and applying can be verified, grasp the characteristic of this fast transient overvoltage better.
To achieve these goals, the utility model takes following scheme:
The utility model provides a kind of series compensation platform fast transient overvoltage simulation experiment system, and described pilot system comprises direct supply, disconnector, simulation string benefit device and analogue ground line; Described direct supply one end ground connection, the other end mends device by described disconnector connecting analog string, and described simulation string mends device by analogue ground line ground connection.
Described simulation string is mended device and is comprised simulation series compensation platform, and the test loop be arranged on simulation series compensation platform and testing apparatus; Described testing apparatus comprises current sensor, the first voltage divider and the second voltage divider.
Described simulation series compensation platform is steel structure platform, and described steel structure platform is supported by supporting insulator and realizes insulation against ground, adopts the structure of girder and secondary beam, and steel structure platform lays steel mesh.
Described test loop comprises reactor, high voltage bus, damping resistance, impulse capacitor, low-voltage bus bar and sparking distance; Described reactor one end connects damping resistance by high voltage bus, the other end connects the high-pressure side of sparking distance, the low pressure end of described sparking distance connects low-voltage bus bar by connecting line, this connecting line installs current sensor simultaneously, the low pressure end of described sparking distance is connected on steel structure platform by the first voltage divider, the other end of described low-voltage bus bar is connected to impulse capacitor low pressure end by connecting line, and the high-pressure side of described impulse capacitor connects damping resistance; Described analogue ground line is connected with one end low-voltage bus bar being connected impulse capacitor, the other end ground connection of analogue ground line.
Described low-voltage bus bar is connected steel structure platform by the second voltage divider respectively with platform bonding wire.
The capacity of described impulse capacitor is not less than 0.1uF, and its voltage is not less than 30kV; Described reactor is dry reactor.
Described sparking distance is trigger type sparkgap, and the self discharge magnitude of voltage of trigger type sparkgap is not less than 30kV, and can carry out triggering discharges.
The response frequency of described current sensor, the first voltage divider and the second voltage divider is all not less than 100MHz; The transient current produced when described current sensor, the first voltage divider and the second voltage divider are for measuring test and transient voltage, respective output signal is analyzed after being stored by transient state registering instrument or oscillograph.
Described direct supply is connected between damping resistance and impulse capacitor by disconnector, realizes controlling direct supply and charges to impulse capacitor.
Compared with prior art, the beneficial effects of the utility model are:
1, test loop can be simulated actual string well and be mended device gap breakdown transient state process instantaneously when circuit generation singlephase earth fault;
2, steel structure platform is supported by supporting insulator, realizes insulation against ground, and steel structure platform simulation actual platform arrangement, adopts the structure of girder and secondary beam, and platform has been laid steel mesh;
3, the relevant devices in actual string benefit device is simplified in test loop, make test loop simple and flexible, the equipment be simplified comprises the metal oxide pressure-limiting device on series compensation platform, and the equipment such as string benefit by-pass switch, because whether these equipment exist the simulate effect not affecting this test;
4, current sensor, the first voltage divider and the second voltage divider for testing in test loop need to select shield effectiveness good and the testing equipment that transient response is good;
5, the reliability service for the fast transient overvoltage characteristic grasped on series compensation platform and for string benefit device is significant.
Accompanying drawing explanation
Fig. 1 is series compensation platform fast transient overvoltage simulation experiment system structural drawing in the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The utility model provides as Fig. 1, the invention provides a kind of series compensation platform fast transient overvoltage simulation experiment system, and described pilot system comprises direct supply DC, disconnector K, simulation string mends device and analogue ground line EL; Described direct supply DC one end ground connection, the other end mends device by described disconnector K connecting analog string, and described simulation string mends device by analogue ground line EL ground connection; Described direct supply DC exports DC voltage and is not less than 30kV.
Described simulation string is mended device and is comprised simulation series compensation platform, and the test loop be arranged on simulation series compensation platform and testing apparatus; Described testing apparatus comprises current sensor CT, the first voltage divider VD1 and the second voltage divider VD2.
Described simulation series compensation platform is steel structure platform, and described steel structure platform is supported by supporting insulator and realizes insulation against ground, adopts the structure of girder and secondary beam, and steel structure platform lays steel mesh.
Described test loop comprises reactor L, high voltage bus HV, damping resistance R, impulse capacitor C, low-voltage bus bar LV and sparking distance G; Described reactor L one end connects damping resistance R by high voltage bus HV, the other end connects the high-pressure side of sparking distance G, the low pressure end of described sparking distance G connects low-voltage bus bar LV by connecting line, this connecting line installs current sensor CT simultaneously, the low pressure end of described sparking distance G is connected on steel structure platform by the first voltage divider VD1, the other end of described low-voltage bus bar LV is connected to impulse capacitor C low pressure end by connecting line, and the high-pressure side of described impulse capacitor C connects damping resistance R; Described analogue ground line EL is connected with one end low-voltage bus bar LV being connected impulse capacitor C, the other end ground connection of analogue ground line EL.
Described low-voltage bus bar LV is connected steel structure platform by the second voltage divider VD2 respectively with platform bonding wire PL.
The capacity of described impulse capacitor C is not less than 0.1uF, and its voltage is not less than 30kV; Described reactor L is dry reactor.
Described sparking distance G is trigger type sparkgap, and the self discharge magnitude of voltage of trigger type sparkgap is not less than 30kV, and can carry out triggering discharges.
The response frequency of described current sensor CT, the first voltage divider VD1 and the second voltage divider VD2 is all not less than 100MHz; The transient current produced when described current sensor CT, the first voltage divider VD1 and the second voltage divider VD2 are for measuring test and transient voltage, respective output signal is analyzed after being stored by transient state registering instrument or oscillograph.
Described direct supply DC is connected between damping resistance R and impulse capacitor C by disconnector K, realizes controlling direct supply DC and charges to impulse capacitor C.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; those of ordinary skill in the field still can modify to embodiment of the present utility model with reference to above-described embodiment or equivalent replacement; these do not depart from any amendment of the utility model spirit and scope or equivalent replacement, are all applying within the claims of the present utility model awaited the reply.
Claims (9)
1. a series compensation platform fast transient overvoltage simulation experiment system, is characterized in that: described pilot system comprises direct supply, disconnector, simulation string benefit device and analogue ground line; Described direct supply one end ground connection, the other end mends device by described disconnector connecting analog string, and described simulation string mends device by analogue ground line ground connection.
2. series compensation platform fast transient overvoltage simulation experiment system according to claim 1, is characterized in that: described simulation string is mended device and comprised simulation series compensation platform, and the test loop be arranged on simulation series compensation platform and testing apparatus; Described testing apparatus comprises current sensor, the first voltage divider and the second voltage divider.
3. series compensation platform fast transient overvoltage simulation experiment system according to claim 2, it is characterized in that: described simulation series compensation platform is steel structure platform, described steel structure platform is supported by supporting insulator and realizes insulation against ground, adopt the structure of girder and secondary beam, and steel structure platform lays steel mesh.
4. series compensation platform fast transient overvoltage simulation experiment system according to claim 2, is characterized in that: described test loop comprises reactor, high voltage bus, damping resistance, impulse capacitor, low-voltage bus bar and sparking distance; Described reactor one end connects damping resistance by high voltage bus, the other end connects the high-pressure side of sparking distance, the low pressure end of described sparking distance connects low-voltage bus bar by connecting line, this connecting line installs current sensor simultaneously, the low pressure end of described sparking distance is connected on steel structure platform by the first voltage divider, the other end of described low-voltage bus bar is connected to impulse capacitor low pressure end by connecting line, and the high-pressure side of described impulse capacitor connects damping resistance; Described analogue ground line is connected with one end low-voltage bus bar being connected impulse capacitor, the other end ground connection of analogue ground line.
5. series compensation platform fast transient overvoltage simulation experiment system according to claim 4, is characterized in that: described low-voltage bus bar is connected steel structure platform by the second voltage divider respectively with platform bonding wire.
6. series compensation platform fast transient overvoltage simulation experiment system according to claim 4, it is characterized in that: the capacity of described impulse capacitor is not less than 0.1uF, its voltage is not less than 30kV; Described reactor is dry reactor.
7. series compensation platform fast transient overvoltage simulation experiment system according to claim 4, it is characterized in that: described sparking distance is trigger type sparkgap, the self discharge magnitude of voltage of trigger type sparkgap is not less than 30kV, and can carry out triggering discharges.
8. series compensation platform fast transient overvoltage simulation experiment system according to claim 4, is characterized in that: the response frequency of described current sensor, the first voltage divider and the second voltage divider is all not less than 100MHz; The transient current produced when described current sensor, the first voltage divider and the second voltage divider are for measuring test and transient voltage, respective output signal is analyzed after being stored by transient state registering instrument or oscillograph.
9. series compensation platform fast transient overvoltage simulation experiment system according to claim 1, is characterized in that: described direct supply is connected between damping resistance and impulse capacitor by disconnector, realizes controlling direct supply and charges to impulse capacitor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420701917.XU CN204228895U (en) | 2014-11-20 | 2014-11-20 | A kind of series compensation platform fast transient overvoltage simulation experiment system |
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| CN201420701917.XU CN204228895U (en) | 2014-11-20 | 2014-11-20 | A kind of series compensation platform fast transient overvoltage simulation experiment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802390A (en) * | 2017-01-11 | 2017-06-06 | 平高集团有限公司 | A kind of very fast transient overvoltage suppresses the method for testing and device of equipment |
| CN109283442A (en) * | 2018-11-06 | 2019-01-29 | 云南电网有限责任公司红河供电局 | A kind of string benefit spark gap impact test apparatus |
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2014
- 2014-11-20 CN CN201420701917.XU patent/CN204228895U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802390A (en) * | 2017-01-11 | 2017-06-06 | 平高集团有限公司 | A kind of very fast transient overvoltage suppresses the method for testing and device of equipment |
| CN106802390B (en) * | 2017-01-11 | 2019-08-13 | 平高集团有限公司 | A kind of very fast transient overvoltage inhibits the test method and device of equipment |
| CN109283442A (en) * | 2018-11-06 | 2019-01-29 | 云南电网有限责任公司红河供电局 | A kind of string benefit spark gap impact test apparatus |
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