CN103675564B - A kind of direct current short term outage and supply voltage sudden change simulation test device - Google Patents
A kind of direct current short term outage and supply voltage sudden change simulation test device Download PDFInfo
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- CN103675564B CN103675564B CN201410001006.0A CN201410001006A CN103675564B CN 103675564 B CN103675564 B CN 103675564B CN 201410001006 A CN201410001006 A CN 201410001006A CN 103675564 B CN103675564 B CN 103675564B
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- direct current
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- supply voltage
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Abstract
The invention discloses a kind of direct current short term outage and supply voltage sudden change simulation test device, including the hand switch being connected with by test system, described hand switch is in parallel with direct current supply voltage jump variable load；Described hand switch accesses power supply network by the first switching device, and the respectively parallel connection of second switch device two ends accesses between described first switching device and power supply network, hand switch and by between test system；Described first switching device, second switch device are all connected with microprocessor.The experimental rig of the present invention controls to ensure that switching device is fully disconnected by microprocessor, accurately controls two switching devices and disconnects and the precise time of Guan Bi, thus accurately controls the time of direct current short term outage；When being powered voltage jump simulated test, it is not necessary to manually access resistance, thus reduce labour intensity, improve experimental safe；The time delay that can make voltage jump is extremely short, thus preferably simulating reality situation.
Description
Technical field
The present invention relates to a kind of electric traction power source combination test apparatus, specifically a kind of direct current short term outage and confession
Piezoelectric voltage sudden change simulation test device.
Background technology
Electric traction power source is in actual moving process, and voltage pulsation and the short interruptions etc. that certainly exist actual electric network are each
Plant complex situations.In order to simulate its actual running environment, the reliability of inspection tested device, it is necessary to carry out in direct current short-duration power
Disconnected test and supply voltage mutant test.Owing to the voltage pulsation of actual electric network is not of uniform size, power interruption time also each not phase
With, therefore at present when carrying out direct current short term outage simulated test, wiring inefficiency, test preparation amount are greatly, no
Can accurately control the time of direct current short term outage；When being powered voltage jump simulated test at present, need in tested system
Manually accessing resistance in system, every time test being both needed to rewiring, and working strength is big, inefficiency, and during the delay of voltage jump
Between long, it is impossible to simulate truth well.
Summary of the invention
The technical problem to be solved is, not enough for prior art, it is provided that a kind of direct current short term outage
And supply voltage sudden change simulation test device, improve the wiring efficiency of direct current short term outage test, accurately control direct current short
Time power failure time；Shorten the time delay of voltage jump, reduce working strength during supply voltage mutant test, improve
Operating efficiency, it is to avoid repeat wiring.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of direct current short term outage and confession
Piezoelectric voltage sudden change simulation test device, including the hand switch being connected with by test system, described hand switch and direct current supply electricity
Pressure sudden change variable load is in parallel；Described hand switch accesses power supply network by the first switching device, and second switch device two ends are divided
In parallel access between described first switching device and power supply network, hand switch and by between test system；Described first derailing switch
Part, second switch device are all connected with microprocessor.
It is connected to the first voltage sensor between described power supply network and described second switch device one end；Described second switch device
The part other end and described be connected to the second voltage sensor between test system；It is easy to measure power supply network output voltage and by test system
Input voltage.
Being connected to piezo-resistance between described power supply network and described second switch device, the piezo-resistance response time is ns level,
Faster than atmospherical discharges, its response speed can meet test requirements document, it is achieved the protection to late-class circuit.
IGCT protection in series with a resistor branch road it is connected between described power supply network and described second switch device；Described protection
Branch road is in parallel with described piezo-resistance；The Parameter adjustable joint of protection branch road, can be arranged as required to mistake during IGBT group
Voltage, to adapt to the protection demand of different voltage level；Protection branch road and piezo-resistance carry out duplicate protection to late-class circuit.
It is connected to filter branch between described protection branch road and described second switch device, the output in power supply network can be filtered
Ripple in voltage.
Being connected to current sensor between described filter branch one end and described second voltage sensor one end, described electric current passes
Sensor is in parallel with described second switch device；Current sensor may be used for measuring input by the electric current of test system.
Compared with prior art, the experimental rig of the had the beneficial effect that present invention of the present invention can be with analog DC
Short term outage test and supply voltage mutant test；Control to ensure that switching device is fully disconnected by microprocessor,
Accurately control two switching devices to disconnect and the precise time of Guan Bi, thus accurately control the time of direct current short term outage；
When being powered voltage jump simulated test, it is not necessary to manually access resistance, thus reduce labour intensity, improve test peace
Quan Xing；By the control of microprocessor, the time delay that can make voltage jump is extremely short, thus preferably simulating reality situation.
Accompanying drawing explanation
Fig. 1 is one embodiment of the invention circuit theory diagrams；
Fig. 2 is one embodiment of the invention direct current short term outage and direct current supply voltage jump simulated test flow chart.
Detailed description of the invention
As it is shown in figure 1, one embodiment of the invention includes the hand switch QS1 being connected with by test system, described hand switch
QS1 is in parallel with direct current supply voltage jump variable load R；Described hand switch QS1 is accessed by the first high-speed circuit breaker QF1 and supplies
Electrical network, between the second high-speed circuit breaker QF2 two ends described first high-speed circuit breaker QF1 of access the most in parallel and power supply network, manually
Switch QS1 and by between test system；Described first high-speed circuit breaker QF1, the second high-speed circuit breaker QF2 part are all with microprocessor even
Connect.
In Fig. 1, branch road a1a2And e1e2For voltage sensor, d2e2For current sensor, b1b2For piezo-resistance, c1c2For
IGCT protection in series with a resistor branch road, d1d2For filter branch road.
During hand switch QS1 Guan Bi, it is used for carrying out direct current short term outage test, when QS1 disconnects, is used for being powered
Voltage jump is tested；Power supply network side function protected to overvoltage.Branch road b1b2For piezo-resistance, its response time is ns level, than
Atmospherical discharges is fast, and its response speed can meet test requirements document, it is achieved the protection to late-class circuit.Branch road c1c2For IGCT with
Resistant series protection branch road, this branch road adjustable protective parameter, the overvoltage during triggering of IGCT can be according to actual conditions
Arrange, to adapt to the protection demand of different voltage level.
As in figure 2 it is shown, QS1 can be operated with manual switches select test to be performed.
The step of direct current short term outage test is:
1) Guan Bi QS1；Arranging the turn-off time of two high-speed circuit breakers and turn off perdurabgility, the turn-off time accurately sets
To 1.0ms, turning off setting range perdurabgility is that 1.0ms～60.0s(minimum indexes as 1ms), and continuously adjustabe；
2) when the experimental rig of the present invention normally work, internal fault-free, input without external fault, processor does not receives
During short term outage instruction, QF1 Guan Bi, QF2 disconnect；When the experimental rig of the present invention normally work, internal fault-free, without outward
Portion's fault input, when microprocessor receives short term outage instruction, QF1 disconnects, QF2 closes after turning off perdurabgility；
When the experimental rig of the present invention works abnormal or has the input of internal fault, external fault or the experimental rig dead electricity of the present invention
Time, the equal disjunction of QF1 and QF2.First-selected by QS1 Selection experiment type.First, when QS1 closes, for direct current short term outage
Test；The most first disconnect QF2, connect QF1, make tested device properly functioning, reaching to test under required operating mode, disconnect QF1,
(such as 300ms) after the time set by time delay, connect QF2；The most first disconnect QF1, connect QF2, make tested device normal
Run, reaching to test under required operating mode, disconnect QF2, (such as 300ms) after the time set by time delay, connect QF1. this
Test is primarily used to performance or the situation of generation that facilities for observation is had in the case of having blast short interruptions.Second,
When QS1 disconnects, it is powered voltage jump test；The most first disconnect QF2, connect QF1, make tested device properly functioning,
Reach to test under required operating mode, disconnect QF1, connect the disconnections of QF2(now two switches and connect that process time is the shortest arranges time delay
Time is 0), thus carry out net pressure and jump test；The most first disconnect QF1, connect QF2, make tested device properly functioning, reaching
Under the operating mode needed for test, disconnect QF2, connect the disconnections of QF1(now two switches and connect that process time is the shortest time time delay is set
Between be 0), thus carry out net pressure bust test.
Direct current supply voltage jump test procedure is:
1) QS1 is disconnected；When the experimental rig of the present invention normally work, internal fault-free, input without external fault, micro-process
When device does not receives supply voltage sudden change instruction, the original state of QF1, QF2 can be set；When the experimental rig of the present invention is normal
Work, internal fault-free, inputting without external fault, microprocessor receives supply voltage sudden change when instructing, and QF1, QF2 are according to connecing
The disjunction received or close command carry out action；When the experimental rig of the present invention works abnormal or has internal fault, outside event
When hindering the experimental rig dead electricity of input or the present invention, the equal disjunction of QF1 and QF2.
QF1, QF2 over-current adjusting value can set, by test system be short-circuited fault time can be as a high-speed response
Disconnecting switch cut off electric current.
High-speed circuit breaker QF1, QF2 can be replaced with the switching device such as IGCT, contactor.
Claims (6)
1. a direct current short term outage and supply voltage sudden change simulation test device, it is characterised in that include and tested system
The hand switch that system connects, described hand switch is in parallel with direct current supply voltage jump variable load；Described hand switch passes through
First switching device accesses power supply network, the respectively parallel connection of second switch device two ends access described first switching device and power supply network it
Between, hand switch and by between test system；Described first switching device, second switch device are all connected with microprocessor.
Direct current short term outage the most according to claim 1 and supply voltage sudden change simulation test device, its feature exists
In, it is connected to the first voltage sensor between described power supply network and described second switch device one end；Described second switch device is another
One end and described be connected to the second voltage sensor between test system.
Direct current short term outage the most according to claim 2 and supply voltage sudden change simulation test device, its feature exists
In, it is connected to piezo-resistance between described power supply network and described second switch device.
Direct current short term outage the most according to claim 3 and supply voltage sudden change simulation test device, its feature exists
In, it is connected to IGCT protection in series with a resistor branch road between described power supply network and described second switch device；Described protection branch road
In parallel with described piezo-resistance.
Direct current short term outage the most according to claim 4 and supply voltage sudden change simulation test device, its feature exists
In, it is connected to filter branch between described protection branch road and described second switch device.
Direct current short term outage the most according to claim 5 and supply voltage sudden change simulation test device, its feature exists
In, it is connected to current sensor, described current sensor between described filter branch one end and described second voltage sensor one end
In parallel with described second switch device.
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| CN201410001006.0A CN103675564B (en) | 2014-01-02 | 2014-01-02 | A kind of direct current short term outage and supply voltage sudden change simulation test device |
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| CN201410001006.0A CN103675564B (en) | 2014-01-02 | 2014-01-02 | A kind of direct current short term outage and supply voltage sudden change simulation test device |
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| CN103675564B true CN103675564B (en) | 2016-08-24 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104267222B (en) * | 2014-09-09 | 2017-04-19 | 株洲时代装备技术有限责任公司 | IGCT-based direct current network voltage sudden change testing device and application method thereof |
| CN104833939B (en) * | 2015-05-29 | 2017-08-04 | 广东电网有限责任公司佛山供电局 | Voltage transient failure calibrating instrument based on equipment for monitoring power quality |
| CN107300643A (en) * | 2016-04-15 | 2017-10-27 | 株洲中车时代电气股份有限公司 | A kind of vehicle traction system supply voltage mutant test device and method |
| CN110888001B (en) * | 2018-09-11 | 2021-08-13 | 株洲中车时代电气股份有限公司 | Direct-current network voltage mutation test device and implementation method of direct-current network voltage mutation test |
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| CN101267164A (en) * | 2008-01-18 | 2008-09-17 | 中兴通讯股份有限公司 | An AC voltage instantaneous change device |
| CN101692104A (en) * | 2009-09-28 | 2010-04-07 | 深圳市双合电脑系统股份有限公司 | Power quality and synchronized phasor monitoring device for power system |
| CN202285026U (en) * | 2011-09-28 | 2012-06-27 | 杭州远方仪器有限公司 | Voltage sag generator |
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| CN101267164A (en) * | 2008-01-18 | 2008-09-17 | 中兴通讯股份有限公司 | An AC voltage instantaneous change device |
| CN101692104A (en) * | 2009-09-28 | 2010-04-07 | 深圳市双合电脑系统股份有限公司 | Power quality and synchronized phasor monitoring device for power system |
| CN202285026U (en) * | 2011-09-28 | 2012-06-27 | 杭州远方仪器有限公司 | Voltage sag generator |
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Address after: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee after: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. Address before: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road Patentee before: ZHUZH CSR TIMES ELECTRIC Co.,Ltd. |