CN204989345U - DC traction substation regeneration electric energy utilizes test device - Google Patents
DC traction substation regeneration electric energy utilizes test device Download PDFInfo
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- CN204989345U CN204989345U CN201520684249.9U CN201520684249U CN204989345U CN 204989345 U CN204989345 U CN 204989345U CN 201520684249 U CN201520684249 U CN 201520684249U CN 204989345 U CN204989345 U CN 204989345U
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Abstract
The utility model discloses a DC traction substation regeneration electric energy utilizes test device, it can solve the electric energy utilization problem of regeneration effectively. Including components such as power powerstat, three -phase AC generating line, dc bus, rectifier unit, reversible load unit, contravariant unit, energy storage unit, afterflow resistance, direct current sensors, rectifier unit comprises transformer and diode rectifier, reversible load unit hands over straight unsteady flow unit to form by transformer and IGBT, the contravariant unit flows the unit by transformer and the straight reversal of IGBT to be formed, and the energy storage unit comprises two -way directly converter and energy storage unit, rectifier unit, reversible load unit and contravariant unit form and are conjuncted, contravariant unit and energy storage unit can be replaced each other. The utility model discloses can simulate drawing of DC traction substation and regenerate typical operating mode by the large capacity, examine contravariant unit and energy storage unit electric energy utilization mode of regeneration and control performance comprehensively. Mainly used field test.
Description
Technical field
The utility model relates to track traffic power supply technique field, the utilization of the regenerative electric energy of the DC traction substation of particularly subway and other urban track traffic and experimental technique.
Background technology
Along with taking IGBT as the Modern Power Electronic Devices manufacture of representative and the development of control technology, motor AC speed adjusting technique and Regenerative Braking Technology obtain and generally apply in city rail electric power system, wherein DC traction substation adopts the uncontrollable diode rectification of 12 pulse wave/24 pulse wave, when the electric energy of train regenerative braking can not be absorbed by the contiguous train that be in traction working condition completely, how dump energy utilizes very well becomes a problem urgently to be resolved hurrily.At present, in DC traction substation, the utilization of power mode of train regenerative braking has two kinds: one is feedback-type, and one is accumulation energy type.The former becomes to exchange back electrical energy to three-phase alternating current electrical network by inverter direct current energy conversion (inversion) that train regenerates, and the latter by the direct current energy of energy storage device absorption and regeneration, and discharges the electric energy of storage when needed.But, typical condition to be represented at actual DC traction substation comprehensively and examine the performance of inverter or energy storage device to be very difficult, or even do not accomplish, simultaneously, inverter or energy storage device fault also may cause accident of power supply, and impact normally runs.Therefore, the application utilizes test unit carry out the typical condition of comprehensive simulated traction substation and examine the regenerative electric energy such as inverter and energy storage device Land use systems and performance thereof by providing a kind of DC traction substation regenerative electric energy.
Utility model content
The purpose of this utility model is just to provide a kind of DC traction substation regenerative electric energy and utilizes test unit, and it can solve the Utilizing question of regenerative electric energy effectively, and examines regenerative electric energy Land use systems and performance thereof.
The utility model solves its technical matters, and the technical scheme adopted is: a kind of DC traction substation regenerative electric energy utilizes test unit, comprises voltage regulation of electric power sources transformer TA, three-phase alternating current bus B
aC, DC bus B
dC, three-phase high-voltage alternating-current switch K, three-phase low-voltage alternating-current switch K
a, DC switch K
d, voltage regulation of electric power sources transformer TA adopts Yd wiring, and three-phase high-voltage alternating-current switch K is established on its former limit, and secondly limit is connected to three-phase alternating current bus B
aC; Transformer TR and diode rectifier RU is in AC Rectification Power Factor in series; Transformer TR and IGBT hands over straight current transforming unit ADR at AC reversible load unit in series; Transformer TR and IGBT orthogonal current transforming unit ADI at AC inversion unit in series, two-way straight convertor DD and energy-storage units SE energy storage unit in series; The former limit of transformer TR of Rectification Power Factor, reversible load unit and inversion unit is respectively by three-phase low-voltage alternating-current switch K
abe connected to three-phase alternating current bus B
aC, one end of the friendship straight current transforming unit ADR of the diode rectifier RU of Rectification Power Factor, reversible load unit, the orthogonal current transforming unit ADI of inversion unit, two-way straight convertor DD DC side is by DC switch K
dand DC current sensor CT is connected to DC bus B
dC, and the other end of DC side is by ground wire E ground connection, continued flow resistance R is connected across DC bus B
dCand between ground.
Described inversion unit and energy storage unit can be replaced mutually.
Continued flow resistance R should select to meet the maximum resistance that afterflow requirement meets again DC current measurement accuracy requirement.
Principle of work of the present utility model is: the IGBT of reversible load unit hands over straight current transforming unit ADR to be two-way controlled, can simulate actual vehicle trailer system by control IGBT makes reversible load unit change between traction working condition with regeneration regime: the corresponding reversible load unit of traction working condition becomes alternating current DC power conversion, be commonly called as inversion, and the corresponding reversible load unit of regeneration regime becomes direct current convert alternating current, be commonly called as rectification.If reversible load unit is in regeneration regime, DC bus B will be made
dCvoltage raises, and when busbar voltage is higher than Rectification Power Factor no-load voltage, Rectification Power Factor turns off, its DC current=0, then make the work of inversion unit, form the primary path of reversible load unit to inversion unit, the direct current energy of reversible load unit regeneration is converted to AC energy and feeds back to ac bus B
aC, or, make energy storage unit charge, the direct current energy of reversible load unit regeneration is stored in the energy-storage units SE of energy storage unit; If reversible load unit is in traction working condition, Rectification Power Factor works, and its DC current > 0, then make inversion unit quit work, or the direct current energy making energy storage unit discharge being stored in its energy-storage units SE is also powered to reversible load unit together with Rectification Power Factor.Voltage regulation of electric power sources transformer TA has voltage regulation function, can simulate DC bus-bar voltage fluctuation situation and the impact on test thereof that three-phase alternating-current supply causes.
Compared with prior art, the beneficial effects of the utility model are:
One, the utility model can the traction of Large Copacity analog DC traction substation and regeneration typical condition, comprehensive assessment inversion unit and energy storage unit performance and control performance thereof.
Two, the utility model can replace site test, reduces site test risk, reduces testing expenses.
Three, the utility model advanced technology, reliable, easy to implement.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the structural representation for energy storage unit of the utility model embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model will be further described.
As shown in Figure 1, a kind of DC traction substation regenerative electric energy utilizes test unit, comprises voltage regulation of electric power sources transformer TA, three-phase alternating current bus B
aC, DC bus B
dC, Rectification Power Factor, reversible load unit, inversion unit, continued flow resistance R, DC current sensor CT and three-phase high-voltage alternating-current switch K, three-phase low-voltage alternating-current switch K
a, DC switch K
ddeng element; Voltage regulation of electric power sources transformer TA adopts Yd wiring, and three-phase high-voltage alternating-current switch K is established on its former limit, and secondly limit is connected to three-phase alternating current bus B
aC; Rectification Power Factor is made up of transformer TR and diode rectifier RU; Reversible load unit hands over straight current transforming unit ADR to form by transformer TR and IGBT; Inversion unit is made up of transformer TR and IGBT orthogonal current transforming unit ADI; The former limit of transformer TR of Rectification Power Factor, reversible load unit and inversion unit is respectively by three-phase low-voltage alternating-current switch K
abe connected to three-phase alternating current bus B
aC, one end of the straight current transforming unit ADR of friendship of the diode rectifier RU of Rectification Power Factor, reversible load unit, the orthogonal current transforming unit ADI DC side of inversion unit is by DC switch K
dand DC current sensor CT is connected to DC bus B
dCand the other end of DC side is through ground wire E ground connection, Rectification Power Factor, reversible load unit and inversion unit form doublet, and wherein the DC current sensor of Rectification Power Factor is designated as CT1, the DC current sensor of reversible load unit is designated as CT2, and the DC current sensor of inversion unit is designated as CT3; Continued flow resistance R is connected across DC bus B
dCand between ground.If reversible load unit is in regeneration regime, DC bus B will be made
dCvoltage raises, and when busbar voltage is higher than Rectification Power Factor no-load voltage, Rectification Power Factor turns off, its DC current=0, then make the work of inversion unit, form the primary path of reversible load unit to inversion unit, the direct current energy of reversible load unit regeneration is converted to AC energy and feeds back to ac bus B
aC; If reversible load unit is in traction working condition, Rectification Power Factor work, its DC current > 0, then make inversion unit quit work.
Shown in Fig. 2 is the structural representation of the utility model for energy storage unit.A kind of DC traction substation regenerative electric energy utilizes test unit, comprises voltage regulation of electric power sources transformer TA, three-phase alternating current bus B
aC, DC bus B
dC, Rectification Power Factor, reversible load unit, energy storage unit, continued flow resistance R, DC current sensor CT and three-phase high-voltage alternating-current switch K, three-phase low-voltage alternating-current switch K
a, DC switch K
ddeng element; Voltage regulation of electric power sources transformer TA adopts Yd wiring, and three-phase high-voltage alternating-current switch K is established on its former limit, and secondly limit is connected to three-phase alternating current bus B
aC; Rectification Power Factor is made up of transformer TR and diode rectifier RU; Reversible load unit hands over straight current transforming unit ADR to form by transformer TR and IGBT; Energy storage unit is made up of two-way straight convertor DD and energy-storage units SE; The former limit of transformer TR of Rectification Power Factor, reversible load unit is respectively by three-phase low-voltage alternating-current switch K
abe connected to three-phase alternating current bus B
aC, the friendship straight current transforming unit ADR of the diode rectifier RU of Rectification Power Factor, reversible load unit, one end of two-way straight convertor DD DC side are by DC switch K
dand DC current sensor CT is connected to DC bus B
dC, and the other end of DC side is through ground wire E ground connection, wherein the DC current sensor of Rectification Power Factor is designated as CT1, and the DC current sensor of reversible load unit is designated as CT2, and the DC current sensor of energy storage unit is designated as CT3; Continued flow resistance R is connected across DC bus B
aCand between ground.If reversible load unit is in regeneration regime, DC bus B will be made
dCvoltage raises, and when busbar voltage is higher than Rectification Power Factor no-load voltage, Rectification Power Factor turns off, and its DC current=0, then make energy storage unit charge, and the direct current energy of reversible load unit regeneration is stored in the energy-storage units SE of energy storage unit; If reversible load unit is in traction working condition, Rectification Power Factor work, its DC current > 0, then make energy storage unit discharge, and the direct current energy that release is stored in energy-storage units SE is also powered to reversible load unit together with Rectification Power Factor.
Claims (2)
1. DC traction substation regenerative electric energy utilizes a test unit, comprises voltage regulation of electric power sources transformer TA, three-phase alternating current bus B
aC, DC bus B
dC,three-phase high-voltage alternating-current switch K, three-phase low-voltage alternating-current switch K
a, DC switch K
d, it is characterized in that: voltage regulation of electric power sources transformer TA adopts Yd wiring, and three-phase high-voltage alternating-current switch K is established on its former limit, secondly limit is connected to three-phase alternating current bus B
aC; Transformer TR and diode rectifier RU is in AC Rectification Power Factor in series; Transformer TR and IGBT hands over straight current transforming unit ADR at AC reversible load unit in series; Transformer TR and IGBT orthogonal current transforming unit ADI at AC inversion unit in series, two-way straight convertor DD and energy-storage units SE energy storage unit in series; The former limit of transformer TR of Rectification Power Factor, reversible load unit and inversion unit is respectively by three-phase low-voltage alternating-current switch K
abe connected to three-phase alternating current bus B
aC, one end of the friendship straight current transforming unit ADR of the diode rectifier RU of Rectification Power Factor, reversible load unit, the orthogonal current transforming unit ADI of inversion unit, two-way straight convertor DD DC side is by DC switch K
dand DC current sensor CT is connected to DC bus B
dC, and the other end of DC side is by ground wire E ground connection, continued flow resistance R is connected across DC bus B
dCand between ground.
2. a kind of DC traction substation regenerative electric energy according to claim 1 utilizes test unit, it is characterized in that: described inversion unit and energy storage unit can be replaced mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520684249.9U CN204989345U (en) | 2015-09-07 | 2015-09-07 | DC traction substation regeneration electric energy utilizes test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520684249.9U CN204989345U (en) | 2015-09-07 | 2015-09-07 | DC traction substation regeneration electric energy utilizes test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204989345U true CN204989345U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520684249.9U Withdrawn - After Issue CN204989345U (en) | 2015-09-07 | 2015-09-07 | DC traction substation regeneration electric energy utilizes test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116260A (en) * | 2015-09-07 | 2015-12-02 | 西南交通大学 | Direct-current traction substation regenerative electric energy utilization test system |
-
2015
- 2015-09-07 CN CN201520684249.9U patent/CN204989345U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116260A (en) * | 2015-09-07 | 2015-12-02 | 西南交通大学 | Direct-current traction substation regenerative electric energy utilization test system |
| CN105116260B (en) * | 2015-09-07 | 2017-10-17 | 西南交通大学 | A kind of DC traction substation regenerative electric energy utilizes pilot system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160120 Effective date of abandoning: 20171017 |