CN204118697U - High-speed overload railway digital AT auto-transformer protective device - Google Patents
High-speed overload railway digital AT auto-transformer protective device Download PDFInfo
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- CN204118697U CN204118697U CN201420294968.5U CN201420294968U CN204118697U CN 204118697 U CN204118697 U CN 204118697U CN 201420294968 U CN201420294968 U CN 201420294968U CN 204118697 U CN204118697 U CN 204118697U
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- speed overload
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- 230000001681 protective effect Effects 0.000 title claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000005070 sampling Methods 0.000 claims abstract description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 239000013307 optical fiber Substances 0.000 claims description 2
- 235000019800 disodium phosphate Nutrition 0.000 description 7
- 241000272814 Anser sp. Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model belongs to electric railway traction for electrical domain; be specifically related to high-speed overload railway digital AT auto-transformer protective device; comprise microprocessor module, On-off signal output module, power module, device panel and communication interface modules; microprocessor module obtains current-voltage sampling value from FPGA; through protection algorism and Logic judgment, complete protection and controlling functions.The utility model relates to high-speed overload railway digital AT auto-transformer protective device, and device adopts double-nuclear DSP constitution and FPJA to receive analog quantity information.Device is provided with fast differential over current protection, biased differential protection, current quick, overcurrent protection, overload protection, o-volt protection, touches the defencive functions such as shell protection, non-ionizing energy loss; improve reliability and the quick-action of protection, meet the demand of high-speed overload railway A T autotransformer protection.
Description
Technical field
The utility model belongs to electric railway traction for electrical domain, is specifically related to high-speed overload railway digital AT auto-transformer protective device.
Background technology
In recent years, railway construction in China achieves huge achievement with development, the development of people to railway it is also proposed higher requirement, thus high-speed overload railway becomes the emphasis of railway construction, but the transformer capacity of high-speed overload railway is large, launch train electric current is large, the interference produced is also large, easily cause existing AT auto-transformer protective device misoperation, based on this, we adopt 32 powerful double-nuclear DSPs as hardware platform, devise high-speed overload railway digital AT auto-transformer protective device, device supports the standard of digital transformer substation comprehensively, support electronic mutual inductor and electromagnetic transformer, perfect Product Process, high-level Electro Magnetic Compatibility, makes device have the reliability of height, good autgmentability.
Summary of the invention
The utility model, in order to solve the problems of the technologies described above, provides a kind of auto-transformer protective device, and the technical scheme taked is: comprise microprocessor module, On-off signal output module, power module, device panel and communication interface modules,
Microprocessor module obtains current-voltage sampling value from FPGA, through protection algorism and Logic judgment, completes protection and controlling functions.
Described protection and controlling functions comprise analog quantity calculate, protection algorism with Logic judgment, On-off signal signal monitoring, switch control rule order output, fault data recorder, communicate and interface function.
Described On-off signal output module adopts On-off signal plug-in unit IA and output switch parameter plug-in unit OA, ARM microprocessor is adopted to realize adopting CAN to carry out exchanges data between DSP, On-off signal output module monitors the state of external equipment, exports the control of control command realization to switch.
Described device panel is made up of button, LED light and LCD.
Described communication interface be Dual-Ethernet interface, electrical interface optical fiber interface one of them.
The utility model relates to high-speed overload railway digital AT auto-transformer protective device, and device adopts double-nuclear DSP constitution and FPJA to receive analog quantity information.Device is provided with fast differential over current protection, biased differential protection, current quick, overcurrent protection, overload protection, o-volt protection, touches the defencive functions such as shell protection, non-ionizing energy loss; improve reliability and the quick-action of protection, meet the demand of high-speed overload railway A T autotransformer protection.
Accompanying drawing explanation
Fig. 1 is total line chart of the present utility model.
Embodiment
The utility model comprises double-nuclear DSP processor, FPGA, On-off signal plug-in unit IA, output switch parameter plug-in unit OA, power module etc., On-off signal, CAN between output inserter and DSP, is adopted to carry out exchanges data, digitized simulation amount from merge cells inputs FPGA by Ethernet, FPGA exports the analog data of reception to DSP and carries out computing and differentiation, DSP, by sending GOOSE order to digital manipulation case, realizes the control to intelligent switch.
The utility model is provided with fast differential over current protection, biased differential protection, current quick, overcurrent protection, overload protection, o-volt protection, touches the defencive functions such as shell protection, non-ionizing energy loss; improve reliability and the quick-action of protection, meet the demand of high-speed overload railway A T autotransformer protection.
Described differential protection operating characteristics is divided into two sections, i.e. differential quick-break active region and percentage differential active region, and protective device according to the size failure judgement character of differential current and stalling current, thus can excise fault fast.
When protective current is greater than the definite value of current quick-breaking, current quick starts, action of prescribing a time limit when reaching current quick-breaking.
Overcurrent protection is with low-voltage startup, second harmonic locking and comprehensive harmonic restraining function, and its operation condition is:
1) when low-voltage start-up performance is open, when only having busbar voltage lower than low-voltage definite value, overcurrent protection could start;
2) when second harmonic blocking function is open, when only having secondary harmonic component lower than definite value, overcurrent protection could start;
3) when comprehensive harmonic restraining function is open, when only having comprehensive harmonic content lower than definite value, overcurrent protection could start.
Overload protection is divided into two sections, and overload I section is for alarm, and overload II section is for tripping operation, and the anti-time limit characteristic of overload protection adopts three characteristic equations of International Electrotechnical Commission's regulation.
Device is provided with and touches shell protection, touches shell protective current setting value when earth current is greater than, and reaches action in limited time at that time.
Device is provided with o-volt protection, and the condition of o-volt protection action is:
1) circuit breaker is in co-bit;
2) decompression first 10 seconds buses have pressure;
3) busbar voltage is less than decompression setting value.
Meet above-mentioned three conditions, and reach o-volt protection action in limited time at that time.
Be provided with non-ionizing energy loss in device, 3 road non electrical quantity trip signals can be accessed, be i.e. grave gas, temperature II section and earth pressure release.
After device sends the order of remote control combined floodgate, if circuit breaker (switch motion time) in setting time is not operating, then provides breaker failure GOOSE order, notify the action of higher level's protection supervisory equipment.
Claims (1)
1. a high-speed overload railway digital AT auto-transformer protective device, comprise microprocessor module, On-off signal output module, power module, device panel and communication interface modules, it is characterized in that: microprocessor module obtains current-voltage sampling value from FPGA, through protection algorism and Logic judgment, complete protection and controlling functions;
Described protection and controlling functions comprise analog quantity calculate, protection algorism with Logic judgment, On-off signal signal monitoring, switch control rule order output, fault data recorder, communicate and interface function;
Described On-off signal output module adopts On-off signal plug-in unit IA and output switch parameter plug-in unit OA, ARM microprocessor is adopted to realize adopting CAN to carry out exchanges data between DSP, On-off signal output module monitors the state of external equipment, exports the control of control command realization to switch;
Described device panel is made up of button, LED light and LCD;
Described communication interface be Dual-Ethernet interface, electrical interface optical fiber interface one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420294968.5U CN204118697U (en) | 2014-06-05 | 2014-06-05 | High-speed overload railway digital AT auto-transformer protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420294968.5U CN204118697U (en) | 2014-06-05 | 2014-06-05 | High-speed overload railway digital AT auto-transformer protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204118697U true CN204118697U (en) | 2015-01-21 |
Family
ID=52335977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420294968.5U Expired - Fee Related CN204118697U (en) | 2014-06-05 | 2014-06-05 | High-speed overload railway digital AT auto-transformer protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204118697U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481596A (en) * | 2017-07-17 | 2017-12-15 | 国网河北省电力公司培训中心 | A kind of power transformer Microcomputer Protection self-adapting simulation implementation method |
| CN107769174A (en) * | 2017-11-17 | 2018-03-06 | 南京国电南自轨道交通工程有限公司 | It is a kind of it is new be applied to AT subregions protection device |
-
2014
- 2014-06-05 CN CN201420294968.5U patent/CN204118697U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481596A (en) * | 2017-07-17 | 2017-12-15 | 国网河北省电力公司培训中心 | A kind of power transformer Microcomputer Protection self-adapting simulation implementation method |
| CN107769174A (en) * | 2017-11-17 | 2018-03-06 | 南京国电南自轨道交通工程有限公司 | It is a kind of it is new be applied to AT subregions protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |