CN204118713U - High-speed overload railway digital traction substation feeder protection equipment - Google Patents
High-speed overload railway digital traction substation feeder protection equipment Download PDFInfo
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- CN204118713U CN204118713U CN201420257063.0U CN201420257063U CN204118713U CN 204118713 U CN204118713 U CN 204118713U CN 201420257063 U CN201420257063 U CN 201420257063U CN 204118713 U CN204118713 U CN 204118713U
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Abstract
The utility model belongs to electric railway traction for electrical domain; be specifically related to high-speed overload rail traction substation feeder protection equipment; comprise microprocessor module, On-off signal output module, power module, device panel, communication interface modules; it is characterized in that: input unit provides 6 road electric currents and 3 road voltage input channels; 6 road electric currents are respectively protection for feed line electric current, electric current measured by feeder line, electric current measured by F line protective current, F line, electric current 1 and electric current 2,3 road voltage are respectively busbar voltage, F line busbar voltage, to side bus voltage.The utility model has the advantage of: device is provided with four segment distance protections, current quick, overcurrent protection, rate of current rise protection, overload protection, o-volt protection, a defencive function such as automatic reclosing, non-ionizing energy loss; improve reliability and the quick-action of protection, meet the demand of high-speed overload rail traction substation protection for feed line.
Description
Technical field
The utility model belongs to electric railway traction for electrical domain, is specifically related to high-speed overload rail traction substation feeder protection equipment.
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 traction substation feeder protection equipment misoperation, based on this, we adopt 32 powerful double-nuclear DSPs as hardware platform, devise high-speed overload railway digital traction substation feeder protection equipment, 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
A kind of high-speed overload rail traction substation feeder protection equipment; comprise microprocessor module, On-off signal output module, power module, device panel, communication interface modules; it is characterized in that: input unit provides 6 road electric currents and 3 road voltage input channels; 6 road electric currents are respectively protection for feed line electric current, electric current measured by feeder line, electric current measured by F line protective current, F line, electric current 1 and electric current 2,3 road voltage are respectively busbar voltage, F line busbar voltage, to side bus voltage.
The digitized simulation amount of described input unit, from merge cells, is first sent into FPJA by Ethernet, is exported to dsp processor by FPGA.
The core 1 of described double-nuclear DSP processor obtains current-voltage sampling value from FPGA, through protection algorism and Logic judgment, completes protection and controlling functions.Mainly comprise: analog quantity calculates, protection algorism and Logic judgment, On-off signal signal monitoring, switch control rule order output, fault data recorder, communicate and the function such as interface.
Described On-off signal plug-in unit IA and output switch parameter plug-in unit OA adopts ARM microprocessor to realize, and adopts 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.By receiving GOOSE order, obtaining corresponding intake, by sending GOOSE order to digital manipulation case, the control to intelligent switch can be realized.
Described device panel is made up of button, LED light and LCD, and the operating state of LED light reflection device, comprising: running indicator, communication light, stand by lamp, tripping operation indicator light.Operating personnel can be checked the running status of device by LCD and button, be monitored the configuration parameter etc. of analog quantity and On-off signal signal, modifier.
Described communication interface supports the communication protocols such as Dual-Ethernet interface, electrical interface, optical fiber interface mode or IEC60870-5-103, IEC61850.
The utility model has the advantage of: device is provided with four segment distance protections, current quick, overcurrent protection, rate of current rise protection, overload protection, o-volt protection, a defencive function such as automatic reclosing, non-ionizing energy loss; improve reliability and the quick-action of protection, meet the demand of high-speed overload rail traction substation protection for feed line.
Accompanying drawing explanation
Fig. 1 is data/address bus figure of the present utility model.
Fig. 2 is positive direction action diagram.
Embodiment
A kind of high-speed overload rail traction substation feeder protection equipment; comprise microprocessor module, On-off signal output module, power module, device panel, communication interface modules; it is characterized in that: input unit provides 6 road electric currents and 3 road voltage input channels; 6 road electric currents are respectively protection for feed line electric current, electric current measured by feeder line, electric current measured by F line protective current, F line, electric current 1 and electric current 2,3 road voltage are respectively busbar voltage, F line busbar voltage, to side bus voltage.
Described distance protection, as the main protection of feeder protection equipment, is divided into four sections, and each section can be adjusted as positive direction or in the other direction, positive direction operating characteristics as shown in Figure 2.Characteristic is that Fig. 2 is about origin symmetry in the other direction.
In fig. 2, Xset is reactance limit setting value, and Rset is resistance limit setting value, and φ 1 shoves for hiding deviation angle setting value, and φ L is line impedance angle setting value, and X1 is reactance side-play amount setting value, and φ 2 is fixed angle, and value is 15 °.
When computation and measurement impedance, measurement impedance is calculated as follows.
,
for fundamental voltage sinusoidal component, cosine component;
,
for fundamental current sinusoidal component, cosine component; R, X are measuring resistance and reactance.
To hide load-bearing capacity to improve distance protection, adopting adaptive moving target indication, as shown in Figure 2, when the comprehensive harmonic content in electric current is greater than setting value, automatically the trip boundary of distance protection inwardly being shunk.Definition
for comprehensive harmonic content,
,
,
,
be respectively fundamental current, 2 subharmonic currents, 3 subharmonic currents, 5 subharmonic currents.
Drop into comprehensive harmonics restraint element, when
(
for comprehensive harmonic content setting value) time, automatically measuring resistance R and reactance X is pressed following formula and amplify.
for comprehensive harmonics restraint coefficient;
,
be respectively the measuring resistance after amplification and measure reactance.
Current quick-breaking and overcurrent protection can arrange positive direction, opposite direction or directionless, and 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:
The general inverse time lag
The very inverse time lag
The extremely inverse time lag
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.
Current increment is obtained by the difference of current time fundamental current and two weeks wavefront fundamental currents, and be the reliability of safety action, device adds comprehensive harmonic restraining function, and current increment will be adjusted by following formula:
1) reclosing charge condition
Circuit breaker is in co-bit;
Reclosing drops into;
Without control loop template;
Without spring unstored energy open into;
Breaker mechanism is without exception;
Reclosing charge timer is started when above condition all meets, after charging time delay is arrived, open reclosing function.As long as there is one not meet in above-mentioned condition, reclosing charge timer resets.
When fault current is comparatively large, for protective circuit breaker device is provided with big current blocking function, this function can be thrown and be moved back, and when big current lock-reclosing lock function drops into and electric current is greater than setting value, lock-reclosing lock function, is judged to be without reclosing.
Device has permanent fault blocking function, and this function can be thrown and be moved back.When this function drops into, detect outside and open into " permanent fault " signal, lock-reclosing lock function, is judged to be without reclosing.
When inspection has compression functions to drop into, if with no pressure, then lock-reclosing lock, is judged to be without reclosing, otherwise for not examine and determine mode.
Trip when protective device and after sending reclosing order, if fault (protection component startup) detected in 3s, then send out trip signal, be judged to be unsuccessful reclosing; If can't detect fault (protection component does not start) in 3s, be then judged to be reclosing success.
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.
Claims (4)
1. a high-speed overload rail traction substation feeder protection equipment; comprise microprocessor module, On-off signal output module, power module, device panel, communication interface modules; it is characterized in that: input unit provides 6 road electric currents and 3 road voltage input channels; 6 road electric currents are respectively protection for feed line electric current, electric current measured by feeder line, electric current measured by F line protective current, F line, electric current 1 and electric current 2,3 road voltage are respectively busbar voltage, F line busbar voltage, to side bus voltage.
2. high-speed overload rail traction substation feeder protection equipment according to claim 1, is characterized in that: the digitized simulation amount of described input unit, from merge cells, is first sent into FPJA by Ethernet, exported to dsp processor by FPGA.
3. high-speed overload rail traction substation feeder protection equipment according to claim 1; it is characterized in that: described On-off signal plug-in unit IA and output switch parameter plug-in unit OA adopts ARM microprocessor to realize, and adopts CAN to carry out exchanges data between DSP.
4. high-speed overload rail traction substation feeder protection equipment according to claim 1; it is characterized in that: described device panel is made up of button, LED light and LCD; the operating state of LED light reflection device, comprising: running indicator, communication light, stand by lamp, tripping operation indicator light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420257063.0U CN204118713U (en) | 2014-05-20 | 2014-05-20 | High-speed overload railway digital traction substation feeder protection equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420257063.0U CN204118713U (en) | 2014-05-20 | 2014-05-20 | High-speed overload railway digital traction substation feeder protection equipment |
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| CN204118713U true CN204118713U (en) | 2015-01-21 |
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| CN201420257063.0U Expired - Fee Related CN204118713U (en) | 2014-05-20 | 2014-05-20 | High-speed overload railway digital traction substation feeder protection equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160233A (en) * | 2016-08-25 | 2016-11-23 | 镇江大全赛雪龙牵引电气有限公司 | A kind of modularized dc tractive power supply system DC side monitoring and protection system |
| CN106410765A (en) * | 2016-10-26 | 2017-02-15 | 成都交大许继电气有限责任公司 | Traction substation feeder protective system and method in all-parallel power supply mode |
| CN107046279A (en) * | 2017-04-28 | 2017-08-15 | 北京交通大学长三角研究院 | Urban track traffic bivector traction substation ground protection device and its method |
| CN109193951A (en) * | 2018-11-08 | 2019-01-11 | 南京国电南自维美德自动化有限公司 | A kind of intelligent operation box with surge suppression function |
-
2014
- 2014-05-20 CN CN201420257063.0U patent/CN204118713U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160233A (en) * | 2016-08-25 | 2016-11-23 | 镇江大全赛雪龙牵引电气有限公司 | A kind of modularized dc tractive power supply system DC side monitoring and protection system |
| CN106410765A (en) * | 2016-10-26 | 2017-02-15 | 成都交大许继电气有限责任公司 | Traction substation feeder protective system and method in all-parallel power supply mode |
| CN106410765B (en) * | 2016-10-26 | 2019-01-08 | 成都交大许继电气有限责任公司 | A kind of traction substation protection for feed line system and method under full parallel operation mode |
| CN107046279A (en) * | 2017-04-28 | 2017-08-15 | 北京交通大学长三角研究院 | Urban track traffic bivector traction substation ground protection device and its method |
| CN107046279B (en) * | 2017-04-28 | 2020-02-21 | 北京交通大学长三角研究院 | Grounding protection device and method for urban rail transit bidirectional traction substation |
| CN109193951A (en) * | 2018-11-08 | 2019-01-11 | 南京国电南自维美德自动化有限公司 | A kind of intelligent operation box with surge suppression function |
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