CN204044201U - A kind of pressure of the direct current net based on IGCT mutant test device - Google Patents
A kind of pressure of the direct current net based on IGCT mutant test device Download PDFInfo
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- CN204044201U CN204044201U CN201420512139.XU CN201420512139U CN204044201U CN 204044201 U CN204044201 U CN 204044201U CN 201420512139 U CN201420512139 U CN 201420512139U CN 204044201 U CN204044201 U CN 204044201U
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Abstract
The utility model discloses a kind of direct current net based on IGCT pressure mutant test device, comprise accessory power supply, controller, IGCT switch element and net pressure sudden change resistance, described accessory power supply is connected with the driving power end of IGCT switch element, described controller is connected with the drived control end of IGCT switch element, described IGCT switch element and underproof load current transformer and power supply three thereof connect and form loop, described IGCT switch element is connected with net pressure sudden change resistor coupled in parallel, and described IGCT switch element is made up of at least one IGCT device.The utility model have break-make by the impact of electric current in circuit, mutation time accurately, simulate the advantage that various net pressure catastrophe is accurate, safe reliability is good.
Description
Technical field
The utility model relates to net pressure mutant test equipment, is specifically related to a kind of direct current net based on IGCT pressure mutant test device.
Background technology
In the test of city rail current transformer, need the operating mode that simulation supplying DC line voltage changes suddenly, net pressure sudden change device is usually used in the net pressure mutant test of locomotive, such as make city rail current transformer supplying DC line voltage reduce suddenly (or increase), after 1ms ~ 1000ms, direct current network voltage resume is normal.The net pressure sudden change device of prior art is the switching utilizing 2 D.C. contactors to realize netting pressure sudden change circuit, but the time that turns on and off of D.C. contactor longer (10ms level), and the turn-off time of opening of D.C. contactor also can by the impact of the electric current in circuit, the net pressure break period of more difficult Controling network pressure abort.
Utility model content
The technical problems to be solved in the utility model be to provide a kind of break-make by the impact of electric current in circuit, mutation time accurately, simulate the pressure of the direct current net based on the IGCT mutant test device that various net pressure catastrophe is accurate, safe reliability is good.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of pressure of the direct current net based on IGCT mutant test device, comprise accessory power supply, controller, IGCT switch element and net pressure sudden change resistance, described accessory power supply is connected with the driving power end of IGCT switch element, described controller is connected with the drived control end of IGCT switch element, described IGCT switch element and underproof load current transformer and power supply three thereof connect and form loop, described IGCT switch element is connected with net pressure sudden change resistor coupled in parallel, and described IGCT switch element is made up of at least one IGCT device.
Preferably, described IGCT switch element is connected and composed by the IGCT branch circuit parallel connection of an IGCT branch road or more than two, and IGCT described in any one props up route IGCT device or plural IGCT devices in series connects and composes.
Preferably, described controller is connected with the communication interface modules for being connected with host computer.
Preferably, described controller is also connected with the signal acquisition module for the voltage and current signal gathering load current transformer.
Preferably, the refrigerating module on the IGCT device of described IGCT switch element, described refrigerating module is air cooled chiller or water-cooled cooler, and described refrigerating module is connected with the output terminal of accessory power supply by contactor.
Preferably, conjunction/the switching winding of described contactor is connected with auxiliary reclay, conjunction/the switching winding of described contactor, both contacts of auxiliary reclay are connected in series and form loop, the main contacts of described contactor is connected in series with the first isolating switch, described refrigerating module is connected with the output terminal of accessory power supply by the main contacts of described contactor, the first isolating switch successively, and the conjunction/switching winding of described auxiliary reclay is connected with controller.
Preferably, described accessory power supply comprises AC380V output terminal and AC220V output terminal, and described refrigerating module is connected with the AC380V output terminal of accessory power supply by the main contacts of described contactor, the first isolating switch successively, the AC220V output terminal of described accessory power supply is respectively equipped with the second isolating switch, wave filter, control power module and the IGCT device driving power module one to one with formation IGCT switch element, the input end of described wave filter is connected with the AC220V output terminal of accessory power supply by the second isolating switch, the output terminal of described wave filter respectively with the control loop of the conjunction/switching winding of described contactor, control power module and driving power module are connected, the output terminal of described control power module respectively with controller, communication interface modules is connected, the output terminal of described driving power module is connected with the driving power end forming IGCT device corresponding in IGCT switch element respectively.
The utility model has following advantage based on the direct current net pressure mutant test device of IGCT:
1, the utility model comprises controller, accessory power supply, IGCT switch element and net pressure sudden change resistance, IGCT switch element and underproof load current transformer and power supply series connection thereof form loop, IGCT switch element is connected with net pressure sudden change resistor coupled in parallel, IGCT switch element is connected and composed by the IGCT branch circuit parallel connection of an IGCT branch road or more than two, and any one IGCT props up route IGCT device or plural IGCT devices in series connects and composes, the control end of IGCT device is connected with controller respectively, the output terminal of accessory power supply is connected with the drive end of each IGCT device in controller and IGCT switch element respectively, the break-make realizing circuit due to the D.C. contactor being substituted prior art by IGCT switch element is controlled, the mutation voltage amplitude between control load current transformer and power supply thereof can be carried out by the resistance changing IGCT switch element and net pressure sudden change resistance, relative D.C. contactor can realize turn-on and turn-off (the 10us level conducting of short time, turn-off time) and the time of sudden change can be pressed by Controling network accurately, and the break-make of each IGCT device is not subject to the impact of electric current in circuit in IGCT switch element, there is mutation time accurate, simulate various net pressure catastrophe accurate, the advantage that safe reliability is good.
2, IGCT switch element of the present utility model is connected and composed by the IGCT branch circuit parallel connection of an IGCT branch road or more than two, and any one IGCT props up route IGCT device or plural IGCT devices in series connects and composes, the flexible structure of IGCT switch element is changeable, and increased by the quantity of IGCT branch road and IGCT device, effectively can improve shock-resistant ability and the serviceable life of IGCT switch element.
Accompanying drawing explanation
Fig. 1 is the framed structure schematic diagram of the utility model embodiment.
Fig. 2 is the circuit theory schematic diagram of the high-tension circuit part at the IGCT switch element place of the utility model embodiment.
Fig. 3 is the accessory power supply of the utility model embodiment and the circuit theory schematic diagram of communication interface modules.
Fig. 4 is the controller of the utility model embodiment and the circuit theory schematic diagram of part.
Fig. 5 is the framed structure schematic diagram that the utility model embodiment is applied to the nucleus module of direct current net pressure mutant test.
Marginal data: 1, accessory power supply; 2, controller; 3, IGCT switch element; 4, net pressure sudden change resistance; 5, communication interface modules; 6, signal acquisition module; 7, refrigerating module; 8, load current transformer; 9, power supply.
Embodiment
Hereinafter in conjunction with underproof load current transformer 8 and power supply 9 thereof, the detailed construction of the present embodiment based on the direct current net pressure mutant test device of IGCT is further described.Wherein, power supply 9 is the direct supply of maximum voltage to 2000V, maximum current 2000A.
As shown in Figure 1, the present embodiment comprises accessory power supply 1, controller 2, IGCT switch element 3 and net pressure sudden change resistance 4 based on the direct current net pressure mutant test device of IGCT, accessory power supply 1 is connected with the driving power end of IGCT switch element 3, controller 2 is connected with the drived control end of IGCT switch element 3, IGCT switch element 3 and underproof load current transformer 8 and power supply 9 three thereof connect and form loop, IGCT switch element 3 and net pressure sudden change resistance 4 are connected in parallel, and IGCT switch element 3 is made up of at least one IGCT device (integrated gate commutated transistor).The present embodiment substitutes by IGCT switch element 3 the break-make control that D.C. contactor realizes circuit, the mutation voltage amplitude between control load current transformer 8 and power supply 9 thereof can be carried out by the resistance changing IGCT switch element 3 and net pressure sudden change both resistance 4, relative D.C. contactor can realize turn-on and turn-off (the 10us level conducting of short time, turn-off time) and the time of sudden change can be pressed by Controling network accurately, and the break-make of IGCT device is not by the impact of electric current in circuit, there is mutation time accurate, simulate various net pressure catastrophe accurate, the advantage that safe reliability is good.
In the present embodiment, controller 2, communication interface modules 5 adopt PLC to realize.Certainly, controller 2 also can adopt other microprocessors to realize as required, and communication interface modules 5 also can adopt other communication modules to realize as required.
As shown in Figure 1, controller 2 is connected with the communication interface modules 5 for being connected with host computer.On the hardware foundation of communication interface modules 5, send instruction by host computer to controller 2, the Long-distance Control to IGCT device each in IGCT switch element 3 can be realized by controller 2, thus make direct current net press mutant test more convenient.
As shown in Figure 1, controller 2 is also connected with the signal acquisition module 6 of voltage for gathering load current transformer 8 and current signal.The voltage and current signal of load current transformer 8 is gathered by signal acquisition module 6; then the voltage and current signal of collection is exported to host computer by communication interface modules 5 by controller 2; the voltage and current signal of load current transformer 8 long-rangely can be checked easily by host computer; thus the overvoltage that can realize load current transformer 8 and overcurrent protection; safe reliability is better, and makes direct current net press mutant test more convenient.
As shown in Figure 1, the refrigerating module 7 on the IGCT device of IGCT switch element 3, refrigerating module 7 is air cooled chiller or water-cooled cooler, and refrigerating module 7 is connected with the output terminal of accessory power supply 1 by contactor KM1.Radiating and cooling can be carried out for the IGCT device of IGCT switch element 3 by refrigerating module 7, thus guarantee the reliable and stable of the IGCT device of IGCT switch element 3, can improve further the mutation time of the present embodiment accurately, simulate various net and press catastrophe accurate.
As shown in Figure 2, the IGCT switch element 3 of the present embodiment is connected and composed by two IGCT branch circuit parallel connections, and any one IGCT props up route two IGCT devices in series connects and composes, the such as IGCT in left side props up route IGCT#1 and IGCT#2 is connected in series formation, and the IGCT on right side props up route IGCT#3 and IGCT#4 is connected in series formation.It should be noted that, IGCT switch element 3 can be connected and composed by an IGCT branch road or more IGCT branch circuit parallel connection as required, and any one IGCT branch road can be connected and composed by an IGCT device or more IGCT devices in series as required, thus the specific implementation flexible structure of IGCT switch element 3 can be made changeable, and increased by the quantity of IGCT branch road and IGCT device, effectively can improve shock-resistant ability and the serviceable life of IGCT switch element 3.
As shown in Figures 2 and 3, conjunction/the switching winding of the present embodiment contactor KM1 is connected with auxiliary reclay KA1, conjunction/the switching winding of contactor KM1, both contacts of auxiliary reclay KA1 are connected in series and form loop, the main contacts of contactor KM1 is connected in series with the first circuit breaker Q F2, refrigerating module 7 is successively by the main contacts of contactor KM1, output terminal (A100 ~ the C100 of the first circuit breaker Q F2 and accessory power supply 1, AC380V) be connected, conjunction/the switching winding of auxiliary reclay KA1 is connected with controller 2, the Long-distance Control to middle relay K A1 can be realized by controller 2, make the control of refrigerating module 7 more flexible.In the present embodiment, load current transformer 8 is also connected in parallel to surge protection device R2, and surge protection device R2 is for the protection of load current transformer 8.
As shown in Figure 3, accessory power supply 1 comprises AC380V output terminal and AC220V output terminal, and refrigerating module 7 is connected with the AC380V output terminal (A100 ~ C100) of accessory power supply 1 by the main contacts of contactor, the first isolating switch successively, AC220V output terminal (the L of accessory power supply 1, N) the second circuit breaker Q F11 is respectively equipped with, wave filter Z1, control power module G1 and the IGCT device driving power module G2 ~ G5 one to one with formation IGCT switch element 3, the input end of wave filter Z1 passes through the AC220V output terminal (L of the second circuit breaker Q F11 and accessory power supply 1, N) be connected, the output terminal of wave filter Z1 is respectively with the control loop of the conjunction/switching winding of contactor KM1 (in Fig. 3, the contact of auxiliary reclay KA1 is used for the conjunction/switching winding of control contactor KM1, conjunction/the switching winding of auxiliary reclay KA1 is controlled by controller 2), control power module G1 and driving power module G2 ~ G5 to be connected, the output terminal of driving power module G2 ~ G5 is connected with the driving power end V1G1 ~ V4G4 of IGCT switch element 3 respectively.
The present embodiment considers that power supply 9 is the direct supply of maximum voltage to 2000V, maximum current 2000A, therefore the present embodiment is encapsulated by cabinet, and cabinet is provided with two cabinet doors, each cabinet door is provided with electromagnetic door lock DCS1 and DCS2, limit switch S1 and S1, controller 2(PLC2) output terminal be also connected with electromagnetism for controlling electromagnetic door lock DCS1 and DCS2 sealed/separating brake K switch A2.
See Fig. 3, controlling power module G1 is DC24V power module, and driving power module G2 ~ G5 is DC36V power module.AC220V power supply is by after circuit breaker Q F11 input, power supply is controlled through wave filter Z1 filtering Hou Songge road, comprise respectively: (1) controls power module G1, L+ pin for for communication interface modules 5(PLC1), the L+ pin of controller 2(PLC2), electromagnetic door lock DCS1J and DCS2, after electromagnetic door lock DCS1J and DCS2 parallel connection, the switching branches of/separating brake K switch A2 sealed with electromagnetism is connected, electromagnetism is sealed/path of winding of separating brake K switch A2 then with controller 2(PLC2) be connected.(2) driving power module G2 ~ G5, controls power supply for providing four tunnels for the driving power end V1G1 ~ V4G4 of IGCT switch element 3.(3) the control loop power supply of the conjunction/switching winding of contactor KM1.
As shown in Figure 4, limit switch S1 with S2 respectively with controller 2(PLC2) IN1 with IN2 pin be connected, controller 2(PLC2) by the on off state of limit switch S1 and S2 detecting box door, with Time Controller 2(PLC2) the voltage and current signal that is connected with signal acquisition module 6 to gather load current transformer 8 of IN3 ~ IN8 pin; Controller 2(PLC2) the on off state detection signal of cabinet door, the voltage and current signal of load current transformer 8 export to host computer by communication interface modules 5 together the most at last; the state of the cabinet door opening and closing state that host computer then detects according to the voltage and current signal of load current transformer 8, limit switch S1 and S2 controls electromagnetism sealed/separating brake K switch A2, thus realize gate interlock protection.
See Fig. 4, controller 2(PLC2) L+ be connected with control power module G1, controller 2(PLC2) OUT3 pin be connected with the conjunction/switching winding of auxiliary reclay KA1, controller 2(PLC2) OUT4 pin be connected with electromagnetism sealed/path of winding of separating brake K switch A2.The driving power end V1G1 ~ V4G4 of IGCT switch element 3 is connected with the output terminal of driving power module G2 ~ G5 respectively, controller 2(PLC2) OUT1 pin and 13 pins as 3 control pin, for output pwm signal, by the on off operating mode of each IGCT device in pwm signal control IGCT switch element 3.
As shown in Figure 5, the present embodiment presses sudden change resistance 4 to be parallel connectivity based on the IGCT switch element 3 of the direct current net pressure mutant test device of IGCT with net, when IGCT switch element 3 disconnects, power supply 9, net pressure sudden change resistance 4, load current transformer 8 forms loop, during 3 conducting of IGCT switch element, power supply 9, IGCT switch element 3, load current transformer 8 forms loop, net pressure sudden change resistance 4 is shorted, the present embodiment is shutoff and the conducting state of control IGCT switch element 3 based on the key point of the direct current net pressure mutant test device of IGCT, thus control the both end voltage sudden change being added in load current transformer 8.
The present embodiment is as follows based on the application process step of the direct current net pressure mutant test device of IGCT:
1) judge the type of direct current net pressure mutant test, if direct current net pressure mutant test type is that net pressure is uprushed, then redirect performs step 2; If direct current net pressure mutant test type is net pressure anticlimax, then redirect performs step 5;
2) IGCT switch element 3 is turned off, power supply 9, net pressure sudden change resistance 4, load current transformer 8 is made to form loop, power supply 9 is added in the two ends of load current transformer 8 again produce pressure drop on net pressure sudden change resistance 4 after, the voltage at load current transformer 8 two ends is reduced;
3) conducting IGCT switch element 3 start timing, power supply 9, IGCT switch element 3, load current transformer 8 form loop, and the pressure drop that power supply 9 is produced on net pressure sudden change resistance 4 voltage that is cut, load current transformer 8 two ends increases (the two ends pressure drop that voltage added value depends on net pressure sudden change resistance 4);
4) after net pressure mutation time (being about 1ms ~ 1000ms) preset, turn off IGCT switch element 3, power supply 9, net pressure sudden change resistance 4, load current transformer 8 is made to form loop, power supply 9 is made to produce pressure drop on net pressure sudden change resistance 4, be added in the voltage resume at load current transformer 8 two ends, net pressure is uprushed and is tested complete and exit;
5) conducting IGCT switch element 3, makes power supply 9, IGCT switch element 3, load current transformer 8 form loop, makes the voltage of power supply 9 directly be added in the two ends of load current transformer 8;
6) turn off IGCT switch element 3 and start timing, power supply 9, net pressure sudden change resistance 4, load current transformer 8 is made to form loop, power supply 9 is added in the two ends of load current transformer 8 again produce pressure drop on net pressure sudden change resistance 4 after, the voltage at load current transformer 8 two ends is reduced (the two ends pressure drop that voltage reduction value depends on net pressure sudden change resistance 4);
7) after net pressure mutation time (being about 1ms ~ 1000ms) preset, conducting IGCT switch element 3, power supply 9, IGCT switch element 3, load current transformer 8 is made to form loop, the voltage of power supply 9 is made directly to be added in the two ends of load current transformer 8, be added in the voltage resume at load current transformer 8 two ends, net pressure anticlimax is tested complete and exits.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. the pressure of the direct current net based on an IGCT mutant test device, it is characterized in that: comprise accessory power supply (1), controller (2), IGCT switch element (3) and net pressure sudden change resistance (4), described accessory power supply (1) is connected with the driving power end of IGCT switch element (3), described controller (2) is connected with the drived control end of IGCT switch element (3), described IGCT switch element (3) and underproof load current transformer (8) and power supply (9) three thereof connect and form loop, described IGCT switch element (3) and net pressure sudden change resistance (4) are connected in parallel, described IGCT switch element (3) is made up of at least one IGCT device.
2. the pressure of the direct current net based on IGCT mutant test device according to claim 1, it is characterized in that: described IGCT switch element (3) is connected and composed by the IGCT branch circuit parallel connection of an IGCT branch road or more than two, and IGCT described in any one props up route IGCT device or plural IGCT devices in series connects and composes.
3. the pressure of the direct current net based on IGCT mutant test device according to claim 2, is characterized in that: described controller (2) is connected with the communication interface modules (5) for being connected with host computer.
4. the direct current net based on IGCT according to claim 3 pressure mutant test device, is characterized in that: described controller (2) is also connected with the signal acquisition module (6) of voltage for gathering load current transformer (8) and current signal.
5. the pressure of the direct current net based on IGCT mutant test device according to claim 4, it is characterized in that: the refrigerating module (7) on the IGCT device of described IGCT switch element (3), described refrigerating module (7) is air cooled chiller or water-cooled cooler, and described refrigerating module (7) is connected by the output terminal of contactor with accessory power supply (1).
6. the pressure of the direct current net based on IGCT mutant test device according to claim 5, it is characterized in that: the conjunction/switching winding of described contactor is connected with auxiliary reclay, conjunction/the switching winding of described contactor, both contacts of auxiliary reclay are connected in series and form loop, the main contacts of described contactor is connected in series with the first isolating switch, described refrigerating module (7) is connected with the output terminal of accessory power supply (1) by the main contacts of described contactor, the first isolating switch successively, and the conjunction/switching winding of described auxiliary reclay is connected with controller (2).
7. the pressure of the direct current net based on IGCT mutant test device according to claim 6, it is characterized in that: described accessory power supply (1) comprises AC380V output terminal and AC220V output terminal, described refrigerating module (7) is connected with the AC380V output terminal of accessory power supply (1) by the main contacts of described contactor, the first isolating switch successively, the AC220V output terminal of described accessory power supply (1) is respectively equipped with the second isolating switch, wave filter, control power module and the IGCT device driving power module one to one with formation IGCT switch element (3), the input end of described wave filter is connected with the AC220V output terminal of accessory power supply by the second isolating switch, the output terminal of described wave filter respectively with the control loop of the conjunction/switching winding of described contactor, control power module and driving power module are connected, the output terminal of described control power module respectively with controller (2), communication interface modules (5) is connected, the output terminal of described driving power module is connected with the driving power end forming IGCT device corresponding in IGCT switch element (3) respectively.
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| CN201420512139.XU CN204044201U (en) | 2014-09-09 | 2014-09-09 | A kind of pressure of the direct current net based on IGCT mutant test device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
-
2014
- 2014-09-09 CN CN201420512139.XU patent/CN204044201U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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Address after: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee after: Zhuzhou CRRC Times Equipment Technology Co., Ltd. Address before: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee before: ZHUZHOU TIMES EQUIPMENT TECHNOLOGY CO., LTD. |
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Effective date of registration: 20171204 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 No. 169 Patentee before: Zhuzhou Zhongche Era Equipment Technology Co., Ltd. |