CN105703473A - Power supply system and method for subway train variable voltage and variable frequency (VVVF) inverter - Google Patents
Power supply system and method for subway train variable voltage and variable frequency (VVVF) inverter Download PDFInfo
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Abstract
The invention provides a power supply system and a power supply method for a subway train variable voltage and variable frequency (VVVF) inverter. When a train control and management system receives a storage battery traction mode instruction, a high-speed circuit breaker arranged between a DC1500V bus and the VVVF inverter is controlled to be opened and a first contactor arranged between a storage battery pack and the VVVF inverter is controlled to be closed, so that the storage battery pack supplies traction power to the VVVF inverter. The power supply system achieves emergency traction of subway trains by means of the storage battery pack when an overhead line system supplies no power, guarantees the life safety of passengers, and is low in equipment cost and high in practicality.
Description
Technical field
The present embodiments relate to electric propulsion technical field, particularly relate to electric power system and the method for a kind of railcar frequency control inverter。
Background technology
The railcar of classification type more and more occurs in city, and is responsible for increasing Urban Transportation demand。
The power supply plan of the railcar of existing classification type is the frequency conversion speed-adjusting system (VariableVoltageandVariableFrequency by contact net is vehicle, VVVF) inverter provides traction power power supply, particularly as follows: electrical source of power DC1500V provides traction power power supply for vehicle VVVF inverter, convert three-phase variable voltage variable frequency power supply to through inversion module, drive traction electric machine。
As can be seen here, in the power supply plan of prior art, if subway is in track running, coming in contact the net situation without electricity, the VVVF inverter of railcar will not have power resources, thus nearest station cannot promptly be run to, passenger can not be evacuated in time, there is very big potential safety hazard。
Summary of the invention
For the drawbacks described above of prior art, the embodiment of the present invention provides a kind of electric power system and the method for railcar frequency control inverter。
One aspect of the present invention provides the electric power system of a kind of railcar frequency control inverter, including:
Frequency conversion speed-adjusting system VVVF inverter, and the DC1500V bus being connected with contact net, it is characterized in that, also include: accumulator battery, it is provided with the first catalyst between described accumulator battery and described VVVF inverter, being provided with high-speed circuit breaker between described DC1500V bus and described VVVF inverter, described first catalyst is connected with described Train Control and management system with described high-speed circuit breaker
Described Train Control and management system, if for receiving battery traction mode instruction, control described high-speed circuit breaker and disconnect, and controls described first catalyst Guan Bi；
Described accumulator battery, for providing traction power power supply for described VVVF inverter, wherein, described traction power power supply is be more than or equal to default threshold value。
Another aspect of the present invention provides the method for supplying power to of a kind of railcar frequency control inverter, described method is applied to the electric power system of railcar frequency control inverter, described electric power system includes: frequency conversion speed-adjusting system VVVF inverter, and the DC1500V bus being connected with contact net, accumulator battery, it is provided with the first catalyst between described accumulator battery and described VVVF inverter, it is provided with high-speed circuit breaker between described DC1500V bus and described VVVF inverter, described first catalyst is connected with described Train Control and management system with described high-speed circuit breaker
If described Train Control and management system receive battery traction mode instruction, control described high-speed circuit breaker and disconnect, control described first catalyst Guan Bi；
Described accumulator battery provides traction power power supply for described VVVF inverter, and wherein, described traction power power supply is be more than or equal to default threshold value。
The electric power system of the railcar frequency control inverter that the embodiment of the present invention provides and method, when Train Control and management system receive battery traction mode instruction, the high-speed circuit breaker controlling to arrange between DC1500V bus and VVVF inverter disconnects, control the first catalyst Guan Bi arranged between accumulator battery and VVVF inverter, in order to accumulator battery provides traction power power supply for VVVF inverter。Achieving the emergent traction being completed railcar when contact net is without electricity by accumulator battery, ensured the life security of passenger, and cost of equipment is relatively low, practicality is stronger。
Accompanying drawing explanation
The structural representation of the electric power system of the railcar frequency control inverter that Fig. 1 provides for the embodiment of the present invention；
The structural representation of the electric power system of another railcar frequency control inverter that Fig. 2 provides for the embodiment of the present invention；
The circuit diagram of the electric power system of the railcar frequency control inverter that Fig. 3 provides for the embodiment of the present invention；
The flow chart of the method for supplying power to of the railcar frequency control inverter that Fig. 4 provides for the embodiment of the present invention。
Detailed description of the invention
The structural representation of the electric power system of the railcar frequency control inverter that Fig. 1 provides for the embodiment of the present invention, as shown in Figure 1, this electric power system includes: including: frequency conversion speed-adjusting system VVVF inverter 1, and the DC1500V bus 2 being connected with contact net, also include: accumulator battery 3, the first catalyst 4 it is provided with between accumulator battery 3 and VVVF inverter 1, high-speed circuit breaker 5 it is provided with between DC1500V bus 2 and VVVF inverter 1, first catalyst 4 is connected with Train Control and management system 6 with high-speed circuit breaker 5
Train Control and management system 6, if for receiving battery traction mode instruction, control high-speed circuit breaker 5 and disconnect, control the first catalyst 4 and close；
Accumulator battery 3, for providing traction power power supply for VVVF inverter 1, wherein, described traction power power supply is be more than or equal to default threshold value。
Specifically, under normal traction working condition, battery traction mode switch is in OFF position, DC1500V bus 2 high pressure is sent to high-speed circuit breaker 5 through bow net by pantograph, high-speed circuit breaker 5 adhesive, DC1500V high-tension electricity sends VVVF inverter 1, VVVF inverter 1 to and converts DC1500V high pressure to three-phase variable voltage variable frequency power supply through inversion module, drives traction electric machine。
When contact net breaks down and can not power, Train Control and management system 6 receive battery traction mode instruction, battery traction mode switch is on position, is switched under the battery traction operating mode that accumulator battery is powered by the normal traction working condition that the power supply of VVVF inverter 1 is powered by contact net。Particularly as follows: first Train Control and management system 6 control high-speed circuit breaker 5 and disconnect, the first catalyst 4 between its secondary control accumulator battery 3 and VVVF inverter 1 closes, now, accumulator battery power supply is that VVVF inverter 1 is powered, the Power convert that accumulator battery provides is become three-phase variable voltage variable frequency power supply by VVVF inverter 1, drives traction electric machine。
The electric power system of the railcar frequency control inverter that the present embodiment provides, when Train Control and management system receive battery traction mode instruction, the high-speed circuit breaker controlling to arrange between DC1500V bus and VVVF inverter disconnects, control the first catalyst Guan Bi arranged between accumulator battery and VVVF inverter, in order to accumulator battery provides traction power power supply for VVVF inverter。Achieving the emergent traction being completed railcar when contact net is without electricity by accumulator battery, ensured the life security of passenger, and cost of equipment is relatively low, practicality is stronger。
The structural representation of the electric power system of another railcar frequency control inverter that Fig. 2 provides for the embodiment of the present invention, as shown in Figure 2, based on embodiment illustrated in fig. 1, accumulator battery 3 includes: at least two battery module 31, being arranged at the first switch element 32 between each battery module 31, described first switch element 31 is connected with described Train Control and management system 6；
Train Control and management system 6, if specifically for receiving battery traction mode instruction, control high-speed circuit breaker 5 to disconnect, control the first catalyst 4 to close, and unlatching and the Guan Bi of the first corresponding switch element 32 is controlled according to the power performances of each battery module 31 output, to adjust the annexation between each battery module 31, in order to provide traction power power supply for VVVF inverter 1, wherein, described traction power power supply is be more than or equal to default threshold value。
Specifically, when contact net breaks down and can not power, Train Control and management system 6 receive battery traction mode instruction, are switched under the battery traction operating mode that accumulator battery is powered by the normal traction working condition that the power supply of VVVF inverter 1 is powered by contact net。Particularly as follows: first Train Control and management system 6 control high-speed circuit breaker 5 and disconnect, the first catalyst 4 between its secondary control accumulator battery 3 and VVVF inverter 1 closes, owing to accumulator battery includes at least two battery module 31, it should be noted that, the quantity of battery module and the power performances of each battery module can need to dispose according to actual application, therefore, the size of the traction power power supply that Train Control and management system 6 can need according to VVVF inverter 1, unlatching and the Guan Bi of the first corresponding switch element 32 is controlled with specific reference to the power performances of each battery module 31 output, to adjust the annexation between each battery module 31, annexation between each battery module 31 includes series connection and/or in parallel, thus the annexation that the battery module in accumulator battery regulates and controls according to Train Control and management system 6 provides traction power power supply for VVVF inverter 1, wherein, traction power power supply is be more than or equal to default threshold value, thus the Power convert that accumulator battery provides is become three-phase variable voltage variable frequency power supply by VVVF inverter 1, drive traction electric machine。
The electric power system of the railcar frequency control inverter that the present embodiment provides, when Train Control and management system receive battery traction mode instruction, the high-speed circuit breaker controlling to arrange between DC1500V bus and VVVF inverter disconnects, control the first catalyst Guan Bi arranged between accumulator battery and VVVF inverter, and the power performances exported according to each battery module controls unlatching and the Guan Bi of the first corresponding switch element, to adjust the annexation between each battery module, in order to accumulator battery provides traction power power supply for VVVF inverter。Achieving the emergent traction completing railcar when contact net is without electricity by adjusting the annexation of each battery module in accumulator battery flexibly, ensured the life security of passenger, and cost of equipment is relatively low, practicality is stronger。
Further, electric power system also includes: the DC110V bus 7 being connected with contact net, accumulator battery 3 also includes: each battery module is connected with DC110V bus 7 and ground wire 8 by second switch element 33, second switch element 33 is connected with Train Control and management system 6, the supply voltage of described each battery module is DC110V
Train Control and management system 6, if specifically for receiving battery traction mode instruction, control high-speed circuit breaker 5 and second switch element 33 disconnects, control the first catalyst 4 to close, and the power performances according to the output of each battery module 31 controls the unlatching of each first switch element 32 and Guan Bi, to adjust the annexation between each battery module 31, in order to provide traction power power supply for VVVF inverter 1, wherein, traction power power supply is be more than or equal to default threshold value。
Specifically, under normal traction working condition, battery traction mode switch is in OFF position, each battery module is connected with DC110V bus 7 and ground wire 8 by second switch element 33, second switch element 33 is now in closure state, DC110V bus 7 is powered for each battery module 31, when contact net breaks down and can not power, Train Control and management system 6 receive battery traction mode instruction, are switched under the battery traction operating mode that accumulator battery is powered by the normal traction working condition that the power supply of VVVF inverter 1 is powered by contact net。Particularly as follows: first Train Control and management system 6 control high-speed circuit breaker 5 and second switch element 33 disconnects, the first catalyst 4 between its secondary control accumulator battery 3 and VVVF inverter 1 closes, owing to accumulator battery includes at least two battery module 31, it should be noted that, the quantity of battery module and the power performances of each battery module can need to dispose according to actual application, therefore, the size of the traction power power supply that Train Control and management system 6 can need according to VVVF inverter 1, unlatching and the Guan Bi of the first corresponding switch element 32 is controlled with specific reference to the power performances of each battery module 31 output, to adjust the annexation between each battery module 31, annexation between each battery module 31 includes series connection and/or in parallel, thus the annexation that the battery module in accumulator battery regulates and controls according to Train Control and management system 6 provides traction power power supply for VVVF inverter 1, wherein, traction power power supply is be more than or equal to default threshold value, thus the Power convert that accumulator battery provides is become three-phase variable voltage variable frequency power supply by VVVF inverter 1, drive traction electric machine。
Further, if Train Control controls unlatching and the Guan Bi of the first corresponding switch element 32 with managing system 6 according to the power performances that each battery module 31 exports, when making the series connection of at least two battery module provide traction power power supply for VVVF inverter 1, after Train Control and management system 6 receive the power request that equipment control case to be powered on vehicle sends, it is connected with each equipment control case vehicle from the centre tap of each two series-connected batteries, powers for equipment control case to be powered。
The electric power system of the railcar frequency control inverter that the present embodiment provides, when Train Control and management system receive battery traction mode instruction, the high-speed circuit breaker controlling to arrange between DC1500V bus and VVVF inverter disconnects, and the second switch element controlling to arrange between each battery module and DC110V bus disconnects, control the first catalyst Guan Bi arranged between accumulator battery and VVVF inverter, and the power performances exported according to each battery module controls unlatching and the Guan Bi of the first corresponding switch element, to adjust the annexation between each battery module, so that accumulator battery provides traction power power supply for VVVF inverter。Achieving the emergent traction completing railcar when contact net is without electricity by adjusting the annexation of each battery module in accumulator battery flexibly, ensured the life security of passenger, and cost of equipment is relatively low, practicality is stronger。And it is that the equipment control case on vehicle is powered by accumulator battery, it is achieved that the emergency service of train short time controls。
For the above-mentioned implementation process of explanation clearly, the circuit diagram of the electric power system of the railcar frequency control inverter that Fig. 3 provides for the embodiment of the present invention, as shown in Figure 3, calculate according to alkalescence cadmium-nickel maintenance-free battery pool-size, the final battery module accumulator battery as train selecting two 220Ah。
Under battery traction operating mode, battery traction mode switch is in ON position, Train Control and management system 6 receive the battery traction mode instruction that driver sends, first Train Control and management system 6 control high-speed circuit breaker disconnection, and its secondary control accumulator battery the first switch element KM1 Guan Bi, second switch element KM2 and KM3 disconnect, the first catalyst KM4 Guan Bi。Now, the DC220V power supply of accumulator is that VVVF inverter 1 is powered。DC220V Power convert is become three-phase variable voltage variable frequency power supply by VVVF inverter 1, drives traction electric machine。
The working method of two group storage battery group parallel charge-discharges is adopted during normal power supply；In time without high voltage power supply, adopt the power supply mode of two strings, the emergency power supply of DC220V is provided for railway traction units。Owing to the trailer system supply voltage of this kind of mode reaches DC220V, motor output torque has the ramp of drive permutation car and saves oneself。Owing to train emergency device power supply (DPS) is DC110V, for ensureing in battery traction process, the normal operation of train DC equipment, adopt the tapped power supply mode from two series-connected batteries, the emergency service as the train short time is used。
The flow chart of the method for supplying power to of the railcar frequency control inverter that Fig. 4 provides for the embodiment of the present invention, described method is applied to the electric power system of railcar frequency control inverter, described electric power system as it is shown in figure 1, as described in method specifically include:
Step 100, if Train Control and management system receive battery traction mode instruction, controls described high-speed circuit breaker and disconnects, and controls described first catalyst Guan Bi；
Step 101, accumulator battery provides traction power power supply for described VVVF inverter, and wherein, described traction power power supply is be more than or equal to default threshold value。
The concrete handling process of each step in the method for supplying power to of the railcar frequency control inverter that the present embodiment provides, it is possible to referring to the system embodiment shown in above-mentioned Fig. 1, it is similar with technique effect that it realizes principle, repeats no more herein。
Further, above-described embodiment, the electric power system of the railcar frequency control inverter shown in Fig. 2 can also be applied to, circuit diagram with the railcar frequency control inverter shown in Fig. 3, in this embodiment, disconnecting at the described high-speed circuit breaker of described control, after controlling described first catalyst Guan Bi, described method also includes:
Described Train Control and management system control unlatching and the Guan Bi of the first corresponding switch element according to the power performances that each battery module exports, to adjust the annexation between each battery module, to provide traction power power supply for described VVVF inverter, wherein, described traction power power supply is be more than or equal to default threshold value。
Further, the described high-speed circuit breaker of described control disconnects, and controls described first catalyst Guan Bi and specifically includes:
Described Train Control and management system control described high-speed circuit breaker and described second switch element disconnects, and controls described first catalyst Guan Bi。
Further, when the series connection of at least two battery module provides traction power power supply for described VVVF inverter, described method also includes:
If described Train Control and management system receive the power request that each equipment control case on vehicle sends, then control to be connected with described equipment control case to be powered from the centre tap of each two series-connected batteries, power for described equipment control case。
The concrete handling process of each step in the method for supplying power to of the railcar frequency control inverter that the present embodiment provides, it is possible to referring to the embodiment shown in above-mentioned Fig. 2 and Fig. 3, it is similar with technique effect that it realizes principle, repeats no more herein。
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can be completed by the hardware that programmed instruction is relevant, aforesaid program can be stored in a computer read/write memory medium, this program upon execution, performs to include the step of said method embodiment；And aforesaid storage medium includes: the various media that can store program code such as ROM, RAM, magnetic disc or CDs。
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent replacement；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme。
Claims (8)
1. the electric power system of a railcar frequency control inverter, including: frequency conversion speed-adjusting system VVVF inverter, and the DC1500V bus being connected with contact net, it is characterized in that, also include: accumulator battery, be provided with the first catalyst between described accumulator battery and described VVVF inverter, between described DC1500V bus and described VVVF inverter, be provided with high-speed circuit breaker, described first catalyst is connected with Train Control and management system with described high-speed circuit breaker
Described Train Control and management system, if for receiving battery traction mode instruction, control described high-speed circuit breaker and disconnect, and controls described first catalyst Guan Bi；
Described accumulator battery, for providing traction power power supply for described VVVF inverter, wherein, described traction power power supply is be more than or equal to default threshold value。
2. the electric power system of railcar frequency control inverter according to claim 1, it is characterized in that, described accumulator battery includes: at least two battery module, being arranged at the first switch element between each battery module, described first switch element is connected with described Train Control and management system；
Described Train Control and management system, if specifically for receiving battery traction mode instruction, control described high-speed circuit breaker to disconnect, control described first catalyst Guan Bi, and the power performances exported according to each battery module controls unlatching and the Guan Bi of the first corresponding switch element, to adjust the annexation between each battery module, in order to provide traction power power supply for described VVVF inverter, wherein, described traction power power supply is be more than or equal to default threshold value。
3. the electric power system of railcar frequency control inverter according to claim 2, it is characterized in that, described electric power system also includes: the DC110V bus being connected with contact net, described accumulator battery also includes: each battery module is connected with described DC110V bus and ground wire by second switch element, and described second switch element is connected with described Train Control and management system；The supply voltage of described each battery module is DC110V,
Described Train Control and management system, if specifically for receiving battery traction mode instruction, control described high-speed circuit breaker and described second switch element disconnects, control described first catalyst Guan Bi, and the power performances exported according to each battery module controls unlatching and the Guan Bi of each first switch element, to adjust the annexation between each battery module, in order to provide traction power power supply for described VVVF inverter, wherein, described traction power power supply is be more than or equal to default threshold value。
4. the electric power system of railcar frequency control inverter according to claim 3, it is characterized in that, when the series connection of at least two battery module provides traction power power supply for described VVVF inverter, it is connected with each equipment control case vehicle from the centre tap of each two series-connected batteries, powers for described equipment control case。
5. the method for supplying power to of a railcar frequency control inverter, it is characterized in that, described method is applied to the electric power system of railcar frequency control inverter, described electric power system includes: frequency conversion speed-adjusting system VVVF inverter, and the DC1500V bus being connected with contact net, accumulator battery, it is provided with the first catalyst between described accumulator battery and described VVVF inverter, it is provided with high-speed circuit breaker between described DC1500V bus and described VVVF inverter, described first catalyst is connected with described Train Control and management system with described high-speed circuit breaker
If described Train Control and management system receive battery traction mode instruction, control described high-speed circuit breaker and disconnect, control described first catalyst Guan Bi；
Described accumulator battery provides traction power power supply for described VVVF inverter, and wherein, described traction power power supply is be more than or equal to default threshold value。
6. method according to claim 5, it is characterised in that described accumulator battery includes: at least two battery module, first switch element corresponding respectively with each battery module, described first switch element is connected with described Train Control and management system；
Disconnecting at the described high-speed circuit breaker of described control, after controlling described first catalyst Guan Bi, described method also includes:
Described Train Control and management system control unlatching and the Guan Bi of the first corresponding switch element according to the power performances that each battery module exports, to adjust the annexation between each battery module, to provide traction power power supply for described VVVF inverter, wherein, described traction power power supply is be more than or equal to default threshold value。
7. method according to claim 6, it is characterized in that, described electric power system also includes: the DC110V bus being connected with contact net, described accumulator battery also includes: each battery module is connected with described DC110V bus and ground wire by second switch element, and described second switch element is connected with described Train Control and management system；
The described high-speed circuit breaker of described control disconnects, and controls described first catalyst Guan Bi and specifically includes:
Described Train Control and management system control described high-speed circuit breaker and described second switch element disconnects, and controls described first catalyst Guan Bi。
8. method according to claim 7, it is characterised in that when the series connection of at least two battery module provides traction power power supply for described VVVF inverter, described method also includes:
If described Train Control and management system receive the power request that each equipment control case on vehicle sends, then control to be connected with described equipment control case to be powered from the centre tap of each two series-connected batteries, power for described equipment control case。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410717281.2A CN105703473A (en) | 2014-11-28 | 2014-11-28 | Power supply system and method for subway train variable voltage and variable frequency (VVVF) inverter |
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| CN201410717281.2A CN105703473A (en) | 2014-11-28 | 2014-11-28 | Power supply system and method for subway train variable voltage and variable frequency (VVVF) inverter |
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| CN109449049A (en) * | 2018-10-30 | 2019-03-08 | 中车南京浦镇车辆有限公司 | A kind of feeder line contactor control circuit based on railcar |
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| CN110293846A (en) * | 2019-06-21 | 2019-10-01 | 中车青岛四方机车车辆股份有限公司 | A kind of method, system and train controlling train ac bus contactor |
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| CN110293846A (en) * | 2019-06-21 | 2019-10-01 | 中车青岛四方机车车辆股份有限公司 | A kind of method, system and train controlling train ac bus contactor |
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Application publication date: 20160622 |