CN106786782A - A kind of energy feedback system and its startup method - Google Patents
A kind of energy feedback system and its startup method Download PDFInfo
- Publication number
- CN106786782A CN106786782A CN201710141081.0A CN201710141081A CN106786782A CN 106786782 A CN106786782 A CN 106786782A CN 201710141081 A CN201710141081 A CN 201710141081A CN 106786782 A CN106786782 A CN 106786782A
- Authority
- CN
- China
- Prior art keywords
- contactor
- flow control
- unit
- variable flow
- supply conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
Abstract
The invention discloses a kind of energy feedback system and its startup method, energy feedback system includes first contactor, bus, bus capacitor, current transforming unit, second contactor, supply conductor voltage detection unit, busbar voltage detection unit and Variable flow control unit；Wherein Variable flow control unit receives the busbar voltage that the supply conductor voltage and busbar voltage detection unit of the transmission of supply conductor voltage detection unit send after second contactor is closed, and implements tracing control so that busbar voltage real-time tracking supply conductor voltage to current transforming unit；During startup, combined floodgate second contactor restarts current transforming unit and Variable flow control unit, and tracing control is implemented to current transforming unit by Variable flow control unit, makes busbar voltage real-time tracking supply conductor voltage, first contactor of then closing a floodgate again.Using the technical scheme, busbar voltage is basically identical with supply conductor voltage when energy feedback system is connected with Traction networks, so that Traction networks are not impacted, further can also avoid bus capacitor from being hit in busbar charging with first contactor and damaged.
Description
Technical field
The present invention relates to field of track traffic, and in particular to the startup of a kind of energy feedback system and the energy feedback system
Method.
Background technology
In 1500V or so when supply conductor voltage normally runs, and the mother before the networking of track traffic energy feedback system starts
Line voltage initial value is 0.First contactor between energy feedback system and Traction networks is closed a floodgate before starting will ensure the two pressure difference
It is as far as possible small, because impact during the bigger combined floodgate of pressure difference to power network, electric capacity, switch is bigger, panel switches can be caused to trip, electric capacity is damaged
Bad, switching damage.The conventional way of in the market is, to busbar charging, when busbar voltage and to lead using Traction networks series buffer resistance
Draw net voltage it is close when control first contactor close a floodgate docking, the deficiency using the method is：1st, Traction networks are by buffering electricity
When resistance is charged to bus capacitor, Traction networks can be impacted, be unfavorable for the stabilization and safety of track traffic Traction networks；2、
Due to the buffering effect that there is bus capacitor, busbar voltage cannot in time track supply conductor voltage fluctuation；3rd, busbar charging speed
It is relatively slow, to realize that the busbar voltage of energy feedback system is sufficiently small, it is necessary to the long period with the pressure difference of supply conductor voltage.
The content of the invention
It is an object of the invention to solve the problems of the prior art, there is provided a kind of energy feedback system and startup method,
Described energy feedback system can be supported to realize more efficiently startup method, and when being started using the startup method, energy is returned
Busbar voltage is basically identical with supply conductor voltage when feedback system is connected with Traction networks, so that Traction networks are not impacted；Enter one
Step can also avoid bus capacitor from being damaged because being hit in busbar charging with first contactor.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of energy feedback system, including first contactor, bus, bus capacitor, current transforming unit, second contactor, lead
Draw net voltage detection unit, busbar voltage detection unit and Variable flow control unit；Described first contactor is used to open and close draws
The electrical connection of net and bus, particularly for closing to set up Traction networks and bus after busbar voltage traces into supply conductor voltage
Electrical connection；Described bus capacitor is connected across bus；Described current transforming unit is used to realize direct current to exchange or exchanges
To the conversion of direct current, its DC terminal is connected across bus, and its exchange end connects AC network by second contactor；Described traction
Net voltage detection unit is used to measure supply conductor voltage and is sent to Variable flow control unit；Described busbar voltage detection unit is used
Busbar voltage and Variable flow control unit is sent in measurement；Described Variable flow control unit is received after second contactor is closed and led
Draw the busbar voltage that the supply conductor voltage and busbar voltage detection unit of the transmission of net voltage detection unit send, and to current transforming unit
Implement tracing control so that busbar voltage real-time tracking supply conductor voltage.
Further, described current transforming unit using with Bidirectional variable-flow function circuit, can for three phase full bridge circuit,
Three-phase half-bridge circuit, T-shaped tri-level circuit or I type tri-level circuits.
Further, described energy feedback system also includes more than one group of exchange buffer cell, every group of exchange buffering
Unit is in parallel with second contactor, and includes the buffer resistance and the 3rd contactor that are serially connected.
The startup method of the energy feedback system in the first two technical scheme comprises the following steps：Step 11：Combined floodgate second
Contactor；Step 12：Start current transforming unit and Variable flow control unit after postponing very first time interval, by Variable flow control unit to becoming
Stream unit implements tracing control so that busbar voltage real-time tracking supply conductor voltage；Step 13：In Variable flow control unit to unsteady flow
Unit is implemented during tracing control, and the absolute value of difference is between Variable flow control unit judges busbar voltage and supply conductor voltage
It is no less than or equal to the 2% of supply conductor voltage, if judged result is to perform step 14 if being, such as judged result is otherwise to return again
Secondary execution step 13；Step 14：Variable flow control unit stops the tracing control to current transforming unit, and controls current transforming unit to keep female
Line voltage；Step 15：Combined floodgate first contactor.
Further, described very first time interval is more than or equal to 50 milliseconds.
The startup method of the energy feedback system in the third technical scheme comprises the following steps：Step 21：Close a floodgate and buffer
3rd contactor of unit；Step 22：Postpone second contactor of closing a floodgate after the second time interval；Step 23：Postponed for the 3rd time
Start current transforming unit and Variable flow control unit behind interval, tracing control is implemented to current transforming unit so that bus by Variable flow control unit
Voltage real-time tracking supply conductor voltage；Step 24：During Variable flow control unit implements tracing control to current transforming unit, unsteady flow
Whether control unit judges the absolute value of the difference between busbar voltage and supply conductor voltage less than or equal to supply conductor voltage
2%, if judged result is to perform step 25 if being, such as judged result performs step 24 again otherwise to return；Step 25：Unsteady flow
Control unit stops the tracing control to current transforming unit, and controls current transforming unit to keep busbar voltage；Step 26：Combined floodgate first connects
Tentaculum.
Further, step 21 is performed as follows：If only one group buffer cell, close a floodgate the buffer cell
3rd contactor；If two groups or more buffer cell, then according to the buffer resistance resistance value of each buffer cell from big
Close a floodgate the 3rd contactor of each buffer cell successively to small order, postpones the second time interval before closing a floodgate every time, until institute
The 3rd contactor for having buffer cell all closes a floodgate.
Further, also including step 22.5：Open a sluice gate the 3rd contactor of all buffer cells；Described step 22.5 can
It is arranged in after step 22 to either step in 26.
Further, the second described time interval is more than or equal to 50 milliseconds.
Further, the 3rd described time interval is more than or equal to 50 milliseconds.
Technical solutions according to the invention are relative to prior art, the beneficial effect of acquirement：
1st, when described energy feedback system starts, electric energy is obtained by AC network, and by Variable flow control unit control
Current transforming unit processed, enables busbar voltage to follow the trail of supply conductor voltage, so as to when energy feedback system starts, Traction networks are not rushed
Hit；
2nd, current transforming unit uses the circuit with Bidirectional variable-flow function, with reverse uncontrollable rectifier function, therefore can be fast
Speed makes bus boost through reverse uncontrollable rectifier function；
3rd, by setting exchange buffer cell, gradually rise busbar voltage, bus capacitor is able to current limliting buffering when charging,
Avoid the damage of first contactor and bus capacitor；
The 4th, the very first time is set at intervals of more than 50ms, is easy to busbar voltage to reach charging voltage；
5th, when there is multigroup buffer cell, closed successively according to the buffer resistance resistance value order from big to small of each buffer cell
3rd contactor of each buffer cell of lock, is easy to bus to boost successively, can preferably reach current limitation effect, protects bus capacitor
It is without damage with first contactor；
6th, all buffer cells are opened a sluice gate, the normal operation after being easy to energy feedback system to start；
7th, it is more than 50ms to set the second time interval and the 3rd time interval, is easy to busbar voltage to reach charging voltage.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding invention, constitutes a part of the invention, the present invention
Schematic description and description be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is each parts relationship schematic diagram in the energy feedback system of the embodiment of the present invention one；
Fig. 2 is the energy feedback system circuit diagram of the embodiment of the present invention one；
Fig. 3 is that the energy feedback system of the embodiment of the present invention one starts method voltage-timing diagram；
Fig. 4 is each parts relationship schematic diagram in the embodiment of the present invention two and the energy feedback system of embodiment three；
Fig. 5 is the energy feedback system circuit diagram of the embodiment of the present invention two；
Fig. 6 is that the energy feedback system of the embodiment of the present invention two starts method voltage-timing diagram；
Fig. 7 is the energy feedback system circuit diagram of the embodiment of the present invention three；
Fig. 8 is that the energy feedback system of the embodiment of the present invention three starts method voltage-timing diagram.
Specific embodiment
In order that the technical problems to be solved by the invention, technical scheme and beneficial effect are clearer, clear, below tie
Drawings and Examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Fig. 1 shows in embodiment one each parts relationship in energy feedback system.As shown in figure 1, in embodiment one, energy
Feedback system includes first contactor 2, bus 3, bus capacitor 4, current transforming unit 5, the detection of second contactor 6, supply conductor voltage
Unit 7, busbar voltage detection unit 8 and Variable flow control unit 9.Wherein, first contactor 2 is used to open and close Traction networks 1 and bus 3
Electrical connection, particularly for closing to set up being electrically connected for Traction networks 1 and bus 3 after busbar voltage traces into supply conductor voltage
Connect relation；Bus capacitor 4 is connected across bus 3；Current transforming unit 5 be used for realize direct current to exchange or AC-to DC conversion, its
DC terminal is connected across bus 3, and its exchange end connects AC network 10 by second contactor 6；Supply conductor voltage detection unit 7 is used
Supply conductor voltage and Variable flow control unit 9 is sent in measurement；Busbar voltage detection unit 8 is used to measure busbar voltage and send
To Variable flow control unit 9；Variable flow control unit 9 receives what supply conductor voltage detection unit 7 sent after second contactor 6 is closed
The busbar voltage that supply conductor voltage and busbar voltage detection unit 8 send, and tracing control is implemented so that bus to current transforming unit 5
Voltage real-time tracking supply conductor voltage.Wherein, so-called " tracing into ", that is, refer to difference between busbar voltage and supply conductor voltage
2% of absolute value less than or equal to supply conductor voltage.
Fig. 2 shows the circuit diagram of energy feedback system in embodiment one (not including supply conductor voltage detection unit, bus
Voltage detection unit and Variable flow control unit).Wherein, the entitled KM1 of first contactor, the entitled KM2 of second contactor.Unsteady flow
Unit use T-shaped three level two-way current conversion circuit, gate-controlled switch device using IGBT and with the antiparallel fly-wheel diodes of IGBT.
LC filter circuits are also provided between current transforming unit and second contactor.Transformer is further comprises in AC network, second connects
Tentaculum KM2 connects external communication power network again after being connected with transformer.In embodiment one, supply conductor voltage detection unit and bus are electric
Pressure detection unit uses Hall voltage sensor.
Fig. 3 shows that the embodiment of the present invention one starts method voltage-timing diagram.Wherein 13 is supply conductor voltage, 14
It is busbar voltage.It is as follows that energy feedback system in the embodiment of the present invention one starts method：
Step 11：Combined floodgate second contactor KM2, in figure 3, the time point of combined floodgate is T11.Because current transforming unit is using T-shaped
Three level two-way current conversion circuits, and gate-controlled switch device includes the fly-wheel diode with uncontrollable rectifier function, AC network
By second contactor KM2 and current transforming unit to busbar charging, busbar voltage is set to rise to the peak value of ac grid voltage.
Step 12：Start current transforming unit and change in T12 time points after postponing very first time interval (being 50ms in the present embodiment)
Flow control unit, implements tracing control, so that busbar voltage real-time tracking Traction networks are electric by Variable flow control unit to current transforming unit
Pressure；So-called real-time tracking, refers to, at interval of one time being manually set, to gather supply conductor voltage value, and by Variable flow control
Unit controls current transforming unit, makes busbar voltage close or equal to the supply conductor voltage value that this is collected.So-called tracing control, be
Refer to that Variable flow control unit is the control measure realized real-time tracking and used to current transforming unit.
Step 13：During Variable flow control unit implements tracing control to current transforming unit, Variable flow control unit judges are female
Whether less than or equal to the 2% of supply conductor voltage, such as judged result is the absolute value of difference between line voltage and supply conductor voltage
It is then to perform step 14, such as judged result performs step 13 again otherwise to return.
Step 14：Variable flow control unit stops the tracing control to current transforming unit, and controls current transforming unit to keep bus electricity
Pressure.Variable flow control unit changes control strategy, and control strategy is changed into holding busbar voltage from tracing control, and so-called holding is female
Line voltage, that is, refer to that Variable flow control unit controls current transforming unit, the busbar voltage before making busbar voltage be maintained at Variation control strategy
Value.
Step 15：Combined floodgate first contactor KM1, combined floodgate time point is T13.So as to connect Traction networks and bus, energy is completed
The startup of feedback system.
The startup of energy feedback system is completed by above step.When starting due to energy feedback system, by alternating current
Net obtains electric energy, and controls current transforming unit by Variable flow control unit, busbar voltage is followed the trail of supply conductor voltage, so that really
Traction networks are not hit on startup to protect energy feedback system.
Fig. 4 shows in embodiment two and embodiment three each parts relationship in energy feedback system.As shown in figure 4, implementing
In example two and embodiment three, energy feedback system includes that first contactor 2, bus 3, bus capacitor 4, current transforming unit 5, second connect
Tentaculum 6, supply conductor voltage detection unit 7, busbar voltage detection unit 8, Variable flow control unit 9 exchange buffering with more than one group
Unit.Wherein, first contactor 2 is used to open and close the electrical connection of Traction networks 1 and bus 3, particularly for being tracked in busbar voltage
Close to set up the electrical connection of Traction networks 1 and bus 3 after to supply conductor voltage；Bus capacitor 4 is connected across bus 3；Unsteady flow
Unit 5 is used to realize direct current to exchange or the conversion of AC-to DC that its DC terminal to be connected across bus 3, and its exchange end passes through the
Two contactor 6 connects AC network 10；Supply conductor voltage detection unit 7 is used to measure supply conductor voltage and is sent to Variable flow control
Unit 9；Busbar voltage detection unit 8 is used to measure busbar voltage and is sent to Variable flow control unit 9；Variable flow control unit 9 exists
The supply conductor voltage and busbar voltage detection unit 8 that the transmission of supply conductor voltage detection unit 7 is received after closure second contactor 6 are sent out
The busbar voltage sent, and tracing control is implemented so that busbar voltage real-time tracking supply conductor voltage to current transforming unit 5；Every group of exchange
Buffer cell is in parallel with second contactor 6, and includes the contactor 11 of buffer resistance 12 and the 3rd being serially connected.And on
So-called " tracing into " is stated, that is, refers to that the absolute value of difference between busbar voltage and supply conductor voltage is less than or equal to supply conductor voltage
2%.
Fig. 5 shows the circuit diagram of energy feedback system in embodiment two (not including supply conductor voltage detection unit, bus
Voltage detection unit and Variable flow control unit).Wherein, the entitled KM3 of first contactor, second contactor entitled KM4, the 3rd
The entitled KM5 of contactor.Current transforming unit use T-shaped three level two-way current conversion circuit, gate-controlled switch device using IGBT and with
The antiparallel fly-wheel diodes of IGBT.LC filter circuits are also provided between current transforming unit and second contactor.AC network
In further comprises transformer, second contactor KM4 connects external communication power network again after being connected with transformer.Supply conductor voltage detection is single
Unit and busbar voltage detection unit use Hall voltage sensor.
Fig. 6 shows that the embodiment of the present invention two starts method voltage-timing diagram.Wherein 15 is supply conductor voltage, 16
It is busbar voltage.It is as follows that energy feedback system in the embodiment of the present invention two starts method：
Step 21：3rd contactor KM5 of combined floodgate buffer cell.The time point of combined floodgate is T21.Because current transforming unit uses T
The level two-way current conversion circuit of type three, and gate-controlled switch device includes the fly-wheel diode with uncontrollable rectifier function, alternating current
Make bus capacitor C1 and C2 charging pressure-boosting after buffered resistance R partial pressure current limlitings.Current limliting buffering, keeps away when bus capacitor is charged
The damage of first contactor and bus capacitor is exempted from.
Step 22：Postpone after the second time interval (in the present embodiment be 50ms) in T22 time point combined floodgate second contactors
KM4.Make AC network through second contactor KM4 to the bus capacitor further charging pressure-boosting of C1 and C2.
Step 23：Start current transforming unit and change in T23 time points after postponing the 3rd time interval (being 50ms in the present embodiment)
Flow control unit, tracing control is implemented to current transforming unit so that busbar voltage real-time tracking Traction networks are electric by Variable flow control unit
Pressure.So-called real-time tracking, refers to, at interval of one time being manually set, to gather supply conductor voltage value, and by Variable flow control
Unit controls current transforming unit, makes busbar voltage close or equal to the supply conductor voltage value that this is collected.So-called tracing control, be
Refer to that Variable flow control unit is the control measure realized real-time tracking and used to current transforming unit.
Step 24：During Variable flow control unit implements tracing control to current transforming unit, Variable flow control unit judges are female
Whether less than or equal to the 2% of supply conductor voltage, such as judged result is the absolute value of difference between line voltage and supply conductor voltage
It is then to perform step 25, such as judged result performs step 24 again otherwise to return.
Step 25：Variable flow control unit stops the tracing control to current transforming unit, and controls current transforming unit to keep bus electricity
Pressure.Variable flow control unit changes control strategy, and control strategy is changed into holding busbar voltage from tracing control, and so-called holding is female
Line voltage, that is, refer to that Variable flow control unit controls current transforming unit, the busbar voltage before making busbar voltage be maintained at Variation control strategy
Value.
Step 26：Combined floodgate first contactor KM3, combined floodgate time point is T24.So as to connect Traction networks and bus, energy is completed
The startup of feedback system.
The startup of energy feedback system is completed by above step.When starting due to energy feedback system, by alternating current
Net obtains electric energy, and controls current transforming unit by Variable flow control unit, busbar voltage is followed the trail of supply conductor voltage, so that really
Traction networks are not hit on startup to protect energy feedback system.Meanwhile, by setting exchange buffer cell, make busbar voltage progressively
Rise, bus capacitor is able to current limliting buffering when charging, it is to avoid the damage of first contactor and bus capacitor.
Fig. 7 shows the circuit diagram of energy feedback system in embodiment three (not including supply conductor voltage detection unit, bus
Voltage detection unit and Variable flow control unit).It is not both with embodiment two, is provided with two groups of buffer cells.First group of buffer cell
Including buffer resistance R8 and the 3rd contactor KM8, second group of buffer cell includes buffer resistance R9 and the 3rd contactor KM9, and
R8>R9.Each buffer cell is all in parallel with second contactor KM7.The entitled KM6 of first contactor.
Fig. 8 shows that the embodiment of the present invention three starts method voltage-timing diagram.Wherein, 17 is supply conductor voltage, 18
It is busbar voltage.It is as follows that energy feedback system in the embodiment of the present invention three starts method：
Step 21.1：The 3rd contactor KM8 that combined floodgate is connected with R8, combined floodgate time point is T31 in fig. 8.Alternating current is through slow
Make bus capacitor C1 and C2 charging pressure-boosting after rushing resistance R8 partial pressure current limlitings.
Step 21.2：Postpone after the second time interval (in the present embodiment be 1s) T32 time points close a floodgate connected with R9 the
Three contactor KM9；Alternating current makes bus capacitor C1 and C2 charging pressure-boosting after resistance R8 and resistance R9 partial pressure current limlitings.Due to resistance
R8 and resistance R9 is parallel relationship.Therefore, the resistance after parallel connection is less than R8, and partial pressure metering function is smaller, therefore, bus capacitor C1
Further boosted with C2.
Step 22：Postpone after the second time interval (in the present embodiment be 1s) in T33 time point combined floodgate second contactors KM7.
Make AC network through second contactor KM7 to the bus capacitor further charging pressure-boosting of C1 and C2.
Step 22.5：Open a sluice gate the 3rd contactor KM8 and KM9 of all buffer cells；Described step 22.5 can also be arranged
After either step in step 22 to 26.
Step 23：Start current transforming unit and unsteady flow in T34 time points after postponing the 3rd time interval (being 1s in the present embodiment)
Control unit, tracing control is implemented to current transforming unit so that busbar voltage real-time tracking supply conductor voltage by Variable flow control unit.
So-called real-time tracking, refers to, at interval of one time being manually set, to gather supply conductor voltage value, and by Variable flow control unit
Control current transforming unit, makes busbar voltage close or equal to the supply conductor voltage value that this is collected.So-called tracing control, refers to become
Flow control unit is the control measure realized real-time tracking and used to current transforming unit.
Step 24：During Variable flow control unit implements tracing control to current transforming unit, Variable flow control unit judges are female
Whether less than or equal to the 2% of supply conductor voltage, such as judged result is the absolute value of difference between line voltage and supply conductor voltage
It is then to perform step 25, such as judged result performs step 24 again otherwise to return.
Step 25：Variable flow control unit stops the tracing control to current transforming unit, and controls current transforming unit to keep bus electricity
Pressure.Variable flow control unit changes control strategy, and control strategy is changed into holding busbar voltage from tracing control, and so-called holding is female
Line voltage, that is, refer to that Variable flow control unit controls current transforming unit, the busbar voltage before making busbar voltage be maintained at Variation control strategy
Value.
Step 26：Combined floodgate first contactor KM6, combined floodgate time point is T35.So as to connect Traction networks and bus, energy is completed
The startup of feedback system.
The startup of energy feedback system is completed by above step.Due to being provided with two groups of buffer cells, according to each buffer cell
Buffer resistance resistance value order from big to small close a floodgate successively the 3rd contactor of each buffer cell, be easy to bus to rise successively
Pressure, can preferably reach current limitation effect, and protection bus capacitor and first contactor are without damage；All buffer cells are opened a sluice gate,
Normal operation after being easy to energy feedback system to start.
The preferred embodiments of the present invention are description above described, it is to be understood that the present invention is not limited to above-mentioned implementation
Example, and the exclusion to other embodiment should not be regarded as.By enlightenment of the invention, those skilled in the art combine known or existing
The change that technology, knowledge are carried out also should be regarded as within the scope of the present invention.
Claims (10)
1. a kind of energy feedback system, it is characterized in that including first contactor, bus, bus capacitor, current transforming unit, the second contact
Device, supply conductor voltage detection unit, busbar voltage detection unit and Variable flow control unit；
Described first contactor is used to open and close the electrical connection of Traction networks and bus, particularly leads for being traced into busbar voltage
Close to set up the electrical connection of Traction networks and bus after drawing net voltage；
Described bus capacitor is connected across bus；
Described current transforming unit is used to realize direct current to exchange or the conversion of AC-to DC that its DC terminal to be connected across bus, its
Exchange end connects AC network by second contactor；
Described supply conductor voltage detection unit is used to measure supply conductor voltage and is sent to Variable flow control unit；
Described busbar voltage detection unit is used to measure busbar voltage and is sent to Variable flow control unit；
Described Variable flow control unit receives the Traction networks electricity that supply conductor voltage detection unit sends after second contactor is closed
Pressure and busbar voltage detection unit send busbar voltage, and to current transforming unit implement tracing control so that busbar voltage in real time with
Track supply conductor voltage.
2. a kind of energy feedback system as claimed in claim 1, it is characterized in that described current transforming unit is using having two-way change
The circuit of function is flowed, can be three phase full bridge circuit, three-phase half-bridge circuit, T-shaped tri-level circuit or I type tri-level circuits.
3. a kind of energy feedback system as claimed in claim 1 or 2, it is characterized in that also including that more than one group of exchange buffering is single
Unit, every group of exchange buffer cell is in parallel with second contactor, and includes the buffer resistance and the 3rd contact that are serially connected
Device.
4. a kind of startup method of energy feedback system, it is used for energy feedback system as claimed in claim 1 or 2, and it is special
Levying is, comprises the following steps：
Step 11：Combined floodgate second contactor；
Step 12：Start current transforming unit and Variable flow control unit after postponing very first time interval, by Variable flow control unit to unsteady flow
Unit implements tracing control so that busbar voltage real-time tracking supply conductor voltage；
Step 13：During Variable flow control unit implements tracing control to current transforming unit, Variable flow control unit judges bus electricity
Whether the absolute value of difference is less than or equal to the 2% of supply conductor voltage between pressure and supply conductor voltage, if judged result is for if being
Step 14 is performed, such as judged result performs step 13 again otherwise to return；
Step 14：Variable flow control unit stops the tracing control to current transforming unit, and controls current transforming unit to keep busbar voltage；
Step 15：Combined floodgate first contactor.
5. the startup method of a kind of energy feedback system as claimed in claim 4, it is characterized in that described very first time interval
More than or equal to 50 milliseconds.
6. a kind of startup method of energy feedback system, it is used for energy feedback system as claimed in claim 3, its feature
It is to comprise the following steps：
Step 21：3rd contactor of combined floodgate buffer cell；
Step 22：Postpone second contactor of closing a floodgate after the second time interval；
Step 23：Start current transforming unit and Variable flow control unit after postponing the 3rd time interval, by Variable flow control unit to unsteady flow
Unit implements tracing control so that busbar voltage real-time tracking supply conductor voltage；
Step 24：During Variable flow control unit implements tracing control to current transforming unit, Variable flow control unit judges bus electricity
Whether less than or equal to the 2% of supply conductor voltage, such as judged result is yes to the absolute value of the difference between pressure and supply conductor voltage
Step 25 is then performed, such as judged result performs step 24 again otherwise to return；
Step 25：Variable flow control unit stops the tracing control to current transforming unit, and controls current transforming unit to keep busbar voltage；
Step 26：Combined floodgate first contactor.
7. the startup method of a kind of energy feedback system as claimed in claim 6, it is characterized in that：Described step 21 is by as follows
Mode is performed：
If only one group buffer cell, the 3rd contactor of the buffer cell that closes a floodgate；If two groups or more
Buffer cell, then close a floodgate the 3rd of each buffer cell successively according to the buffer resistance resistance value order from big to small of each buffer cell
Contactor, the second time interval is postponed before closing a floodgate every time, until the 3rd contactor of all buffer cells all closes a floodgate.
8. the startup method of a kind of energy feedback system as claimed in claim 7, it is characterized in that, also including step 22.5：Open
3rd contactor of all buffer cells of lock；Described step 22.5 can be arranged in after step 22 to either step in 26.
9. the startup method of a kind of energy feedback system as described in claim 6,7 or 8, it is characterized in that：When described second
Between interval be more than or equal to 50 milliseconds.
10. the startup method of a kind of energy feedback system as described in claim 6,7 or 8, it is characterized in that：When the described 3rd
Between interval be more than or equal to 50 milliseconds.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710141081.0A CN106786782B (en) | 2017-03-10 | 2017-03-10 | A kind of energy feedback system and its starting method |
| PCT/CN2017/102477 WO2018161524A1 (en) | 2017-03-10 | 2017-09-20 | Energy feedback system and starting method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710141081.0A CN106786782B (en) | 2017-03-10 | 2017-03-10 | A kind of energy feedback system and its starting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106786782A true CN106786782A (en) | 2017-05-31 |
| CN106786782B CN106786782B (en) | 2019-10-22 |
Family
ID=58961988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710141081.0A Active CN106786782B (en) | 2017-03-10 | 2017-03-10 | A kind of energy feedback system and its starting method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106786782B (en) |
| WO (1) | WO2018161524A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199605A (en) * | 2018-02-11 | 2018-06-22 | 常州博能新能源有限公司 | Two-way inverter and the neutral-point potential balance method based on distribution factor method |
| WO2018161524A1 (en) * | 2017-03-10 | 2018-09-13 | 厦门科华恒盛股份有限公司 | Energy feedback system and starting method therefor |
| CN113726203A (en) * | 2020-05-22 | 2021-11-30 | 株洲中车时代电气股份有限公司 | Simplified converter circuit and converter device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3826166A1 (en) | 2019-11-25 | 2021-05-26 | Carrier Corporation | Power module and converter with asymmetrical semiconductor rating arrangement |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103448573A (en) * | 2013-07-29 | 2013-12-18 | 华北电力大学（保定） | High-voltage direct-current tractive power supply system of bidirectional interactive electrified railway |
| CN204333980U (en) * | 2015-01-28 | 2015-05-13 | 沈阳铁道勘察设计院有限公司 | A kind of urban track traffic rectification and regenerative braking inversion feedback device |
| JP2015204684A (en) * | 2014-04-14 | 2015-11-16 | 株式会社日立製作所 | Power supply system and control method for the same |
| CN105226969A (en) * | 2015-10-28 | 2016-01-06 | 株洲时代装备技术有限责任公司 | Pressure energy feedback system and can method be presented in power supply of city railway system twin coil access type |
| CN205632170U (en) * | 2016-05-13 | 2016-10-12 | 国网天津市电力公司 | Low pressure contravariant repayment formula traction power supply system who contains energy storage |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6488856B2 (en) * | 2015-04-27 | 2019-03-27 | 中西金属工業株式会社 | Drive control device provided with power storage device |
| CN105610190B (en) * | 2016-01-15 | 2019-03-12 | 北京先行电气股份有限公司 | Rail traffic vehicles renewable sources of energy feedback comprehensive utilization device and system |
| CN105720833B (en) * | 2016-03-24 | 2018-07-31 | 西安爱科赛博电气股份有限公司 | Rail traction takes electric through track power supply |
| CN106100000A (en) * | 2016-07-08 | 2016-11-09 | 许继集团有限公司 | Converter plant, urban rail tractive power supply system and control method thereof |
| CN106786782B (en) * | 2017-03-10 | 2019-10-22 | 科华恒盛股份有限公司 | A kind of energy feedback system and its starting method |
-
2017
- 2017-03-10 CN CN201710141081.0A patent/CN106786782B/en active Active
- 2017-09-20 WO PCT/CN2017/102477 patent/WO2018161524A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103448573A (en) * | 2013-07-29 | 2013-12-18 | 华北电力大学（保定） | High-voltage direct-current tractive power supply system of bidirectional interactive electrified railway |
| JP2015204684A (en) * | 2014-04-14 | 2015-11-16 | 株式会社日立製作所 | Power supply system and control method for the same |
| CN204333980U (en) * | 2015-01-28 | 2015-05-13 | 沈阳铁道勘察设计院有限公司 | A kind of urban track traffic rectification and regenerative braking inversion feedback device |
| CN105226969A (en) * | 2015-10-28 | 2016-01-06 | 株洲时代装备技术有限责任公司 | Pressure energy feedback system and can method be presented in power supply of city railway system twin coil access type |
| CN205632170U (en) * | 2016-05-13 | 2016-10-12 | 国网天津市电力公司 | Low pressure contravariant repayment formula traction power supply system who contains energy storage |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018161524A1 (en) * | 2017-03-10 | 2018-09-13 | 厦门科华恒盛股份有限公司 | Energy feedback system and starting method therefor |
| CN108199605A (en) * | 2018-02-11 | 2018-06-22 | 常州博能新能源有限公司 | Two-way inverter and the neutral-point potential balance method based on distribution factor method |
| CN113726203A (en) * | 2020-05-22 | 2021-11-30 | 株洲中车时代电气股份有限公司 | Simplified converter circuit and converter device |
| CN113726203B (en) * | 2020-05-22 | 2024-01-30 | 株洲中车时代电气股份有限公司 | Simplified and unified converter circuit and converter device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106786782B (en) | 2019-10-22 |
| WO2018161524A1 (en) | 2018-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104682431B (en) | Self-starting method and self-starting system of energy storage converter | |
| CN107493025B (en) | A kind of loaded self-adaptive change of current control method of Resonant DC Link three-phase inverter | |
| CN106786782A (en) | A kind of energy feedback system and its startup method | |
| CN202435108U (en) | Charging cabinet | |
| CN104135020A (en) | Battery access control system and method for direct-current side of energy storage converter | |
| CN107834505B (en) | The artificial zero passage high voltage DC breaker of current-limiting type self-charging type and its cutoff method | |
| CN104953873A (en) | Simulation model of hybrid-structure modular multi-level current converter | |
| CN103259059B (en) | A kind of flow battery initial charge method and circuit | |
| CN207251220U (en) | A kind of solar energy power generating three phase full bridge grid-connected inverting system | |
| CN104104143A (en) | Parallel-connected quiescent voltage restorer for isolating transient voltage fault of power system | |
| CN206004379U (en) | A kind of electric automobile and vehicle-mounted charger of buck one | |
| CN203406794U (en) | Large power distributed energy storage current transformer | |
| CN111030060A (en) | Clamp-on circuit breaker topology suitable for direct current fault removal | |
| CN103441694A (en) | Large-power distribution type energy storage converter | |
| CN204706895U (en) | Fossil power plant auxiliary engine frequency converter high-low voltage traversing device | |
| CN204179938U (en) | The synchronous grid-connected system of a kind of inverter | |
| CN207124475U (en) | Energy-storage system | |
| CN107026475B (en) | A kind of distributed solar electricity generation system enters network control method | |
| CN204012903U (en) | For isolating the parallel connection type quiescent voltage restorer of electrical power system transient voltage failure | |
| CN206611347U (en) | A kind of voltage doubling rectifing circuit with automatic regulation function | |
| CN105634321B (en) | The single phase bidirectional DC AC converters and its control method of high reliability | |
| CN111559266B (en) | Charging device for electric automobile | |
| CN106253458A (en) | A kind of uninterrupted power source and control method thereof | |
| CN209283123U (en) | A kind of single machine inverter circuit | |
| CN206992712U (en) | The low voltage ride through device that a kind of energy storage combines with boosting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 361000 Ma Long Road 457, Torch Garden, Xiamen Torch High-tech Zone, Xiamen City, Fujian Province Applicant after: Kehua Hengsheng Co., Ltd. Address before: 361000 Ma Long Road 457, Torch Garden, Xiamen Torch High-tech Zone, Xiamen City, Fujian Province Applicant before: Xiamen Kehua Hengsheng Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 361000 Ma Long Road 457, Torch Garden, Xiamen Torch High-tech Zone, Xiamen City, Fujian Province Patentee after: Kehua Data Co.,Ltd. Address before: 361000 Ma Long Road 457, Torch Garden, Xiamen Torch High-tech Zone, Xiamen City, Fujian Province Patentee before: XIAMEN KEHUAHENGSHENG LIMITED BY SHARE Ltd. |
|
| CP01 | Change in the name or title of a patent holder |