WO2020113602A1 - 一种多制式供电的动车牵引系统 - Google Patents

一种多制式供电的动车牵引系统 Download PDF

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Publication number
WO2020113602A1
WO2020113602A1 PCT/CN2018/120148 CN2018120148W WO2020113602A1 WO 2020113602 A1 WO2020113602 A1 WO 2020113602A1 CN 2018120148 W CN2018120148 W CN 2018120148W WO 2020113602 A1 WO2020113602 A1 WO 2020113602A1
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WIPO (PCT)
Prior art keywords
voltage
pantograph
traction
current
transformer
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Ceased
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PCT/CN2018/120148
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English (en)
French (fr)
Inventor
徐萌
哈大雷
吕义
陈天宇
金文斌
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CRRC Changchun Railway Vehicles Co Ltd
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CRRC Changchun Railway Vehicles Co Ltd
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Priority claimed from CN201811482748.4A external-priority patent/CN110014845B/zh
Priority claimed from CN201822038028.0U external-priority patent/CN209191700U/zh
Application filed by CRRC Changchun Railway Vehicles Co Ltd filed Critical CRRC Changchun Railway Vehicles Co Ltd
Priority to SG11201911894YA priority Critical patent/SG11201911894YA/en
Priority to MYPI2019007313A priority patent/MY205151A/en
Publication of WO2020113602A1 publication Critical patent/WO2020113602A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L9/00—Electric propulsion with power supply external to the vehicle
    • B60L9/16—Electric propulsion with power supply external to the vehicle using AC induction motors
    • B60L9/30—Electric propulsion with power supply external to the vehicle using AC induction motors fed from different kinds of power-supply lines

Definitions

  • the invention relates to the technical field of electric vehicles, and in particular to a multi-standard electric vehicle traction system.
  • the traction system of the EMU has only one power supply system.
  • a 25kV power supply system is adopted, and the voltage conversion is performed through the traction transformer on the EMU, and then the converted voltage is input to the traction converter, after rectification, inverter, and output To the traction motor, and then realize the power supply for the traction motor.
  • the embodiments of the present invention provide a multi-standard power supply traction system for an electric vehicle, which can improve the diversity of the EMU.
  • a multi-system powered traction system for electric vehicles including: AC pantograph, DC pantograph, isolation switch, AC high voltage tank, DC high voltage tank, traction transformer, traction auxiliary converter and traction motor,
  • the AC high-voltage tank is connected to the AC pantograph to detect whether the first voltage and the first current flowing through the AC pantograph are AC power supply parameters. If not, disconnect the AC high-voltage tank from the The AC pantograph;
  • the isolation switch is connected to the DC pantograph to determine whether the voltage system on the DC pantograph is a non-DC system, and if so, disconnect the isolation switch from the DC pantograph;
  • the DC high-voltage box is connected to the isolation switch to detect whether the second voltage flowing through the isolation switch and the second current are DC power supply parameters, and if not, disconnect the DC high-voltage box from the isolation switch ;
  • the traction transformer is connected to the AC high-voltage tank and the DC high-voltage tank, the primary side of the traction transformer is connected to the grounding device, and the primary side and grounding end of the traction transformer are provided with current transformers;
  • the input end of the traction auxiliary converter is connected to the traction transformer, and the output end is connected to the traction motor.
  • the isolation switch includes: an overcurrent detection device and an overcurrent protection device,
  • the overcurrent detection device is connected to the DC pantograph to detect whether the first current on the DC pantograph is higher than a first current threshold, and if so, send an alarm message;
  • the overcurrent protection device is connected to the overcurrent detection device, and is used to disconnect the overcurrent protection device and the overcurrent detection device based on the alarm information.
  • it also includes: an alarm device,
  • the alarm device is connected to the isolation switch and issues an alarm based on the alarm information.
  • the DC high voltage box includes: a DC voltage sensor, a DC current sensor, and a DC circuit breaker,
  • the DC voltage sensor is connected to the isolation switch, and is used to detect whether the second voltage flowing through the isolation switch meets the DC voltage requirements, and if not, send a DC voltage warning signal;
  • the DC current sensor is connected to the isolation switch and the DC voltage sensor, and is used to detect whether the second current flowing through the isolation switch meets the DC current requirement, and if not, send a DC current warning signal;
  • the DC circuit breaker is connected to the DC current sensor, and is used to disconnect the DC high-voltage tank and the isolation switch based on the DC voltage early warning signal and/or the DC current early warning signal.
  • the AC high-voltage box includes: an AC voltage transformer, an AC current transformer, and an AC circuit breaker,
  • the AC voltage transformer is connected to the AC pantograph to detect whether the first voltage flowing through the AC pantograph meets the AC voltage requirements, and if not, to send an AC voltage warning signal;
  • the AC current transformer is connected to the AC pantograph and the AC voltage transformer, and is used to detect whether the first current flowing through the AC pantograph meets the AC current requirement, if not, send AC current warning signal;
  • the AC circuit breaker is connected to the AC current transformer and used to disconnect the AC high-voltage tank and the AC pantograph based on the AC voltage early warning signal and/or the AC current early warning signal.
  • the overcurrent protection device includes a DC surge arrester.
  • it also includes: a reminder device,
  • the reminder device is connected to the isolation switch, and sends a reminder signal based on the type of the alarm information.
  • the AC pantograph is an AC 25KV pantograph
  • the DC pantograph is a DC 750V pantograph, a DC 1.5KV pantograph or a DC 3KV pantograph.
  • an embodiment of the present invention provides a multi-standard power supply traction system for electric vehicles, including: AC pantograph, DC pantograph, disconnector, AC high voltage box, DC high voltage box, traction transformer, traction auxiliary transformer Flow controller and traction motor.
  • the AC high-voltage tank is connected to the AC pantograph to detect whether the first voltage and the first current flowing through the AC pantograph are AC power supply parameters, and if not, disconnect the AC high-voltage The box and the AC pantograph.
  • the isolating switch is connected to the DC pantograph to determine whether the voltage system on the DC pantograph is a non-DC system, and if so, disconnect the isolating switch from the DC pantograph.
  • the DC high-voltage box is connected to the isolation switch to detect whether the second voltage flowing through the isolation switch and the second current are DC power supply parameters, and if not, disconnect the DC high-voltage box from the isolation switch .
  • the traction transformer is connected to the AC high-voltage tank and the DC high-voltage tank, the primary side of the traction transformer is connected to a grounding device, and the primary side and grounding end of the traction transformer are provided with current transformers.
  • the input end of the traction auxiliary converter is connected to the traction transformer, and the output end is connected to the traction motor. It can be seen that the scheme provides a multi-standard power supply traction system for EMUs to increase the diversity of EMUs. In addition to this, the secondary winding of the traction transformer can also be used as smoothing reactance, which saves circuit space and improves economic performance.
  • FIG. 1 is a schematic structural diagram of a multi-standard power supply traction system provided by an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a specific implementation structure of an isolating switch provided in this embodiment
  • FIG. 3 is a schematic diagram of a specific implementation structure of a DC high-voltage tank provided in this embodiment
  • FIG. 4 is a schematic diagram of a specific implementation structure of an AC high-voltage tank provided in this embodiment
  • FIG. 5 is a schematic structural diagram of a multi-standard power supply traction system provided by this embodiment.
  • FIG. 6 is another schematic structural diagram of a multi-standard power supply traction system provided by this embodiment.
  • FIG. 7 is a specific circuit diagram of a multi-standard power supply traction system for an electric vehicle provided by this embodiment.
  • the current EMU traction system only has one power supply system.
  • a 25 kV power supply system is adopted to perform voltage conversion through the traction transformer on the EMU, and then input the converted voltage into the traction converter, after rectification, Inverter, output to traction motor, and then realize power supply for traction motor.
  • FIG. 1 is a schematic structural diagram of a multi-system powered traction system for electric vehicles provided by an embodiment of the present invention.
  • the multi-system powered traction system includes: AC pantograph 11, DC pantograph 12, isolating switch 13, AC high voltage box 14, DC high voltage box 15, traction transformer 16, traction auxiliary converter 17 and traction motor 18 .
  • the AC high-voltage tank is connected to the AC pantograph to detect whether the first voltage and the first current flowing through the AC pantograph are AC power supply parameters; if not, disconnect the AC high-voltage The box and the AC pantograph.
  • the isolating switch is connected to the DC pantograph to determine whether the voltage system on the DC pantograph is a non-DC system, and if so, disconnect the isolating switch from the DC pantograph.
  • the DC high-voltage box is connected to the isolation switch to detect whether the second voltage flowing through the isolation switch and the second current are DC power supply parameters, and if not, disconnect the DC high-voltage box from the isolation switch .
  • the traction transformer is connected to the AC high-voltage tank and the DC high-voltage tank, the primary side of the traction transformer is connected to a grounding device, and the primary side and grounding end of the traction transformer are provided with current transformers.
  • the input end of the traction auxiliary converter is connected to the traction transformer, and the output end is connected to the traction motor.
  • the pantograph is an electrical device that obtains electrical energy from the power supply contact network for electric traction locomotives including high-speed rail and electric trains, and is usually installed on the roof of the locomotive or the electric train.
  • the pantograph can be divided into two types: single arm bow and double arm bow, which are composed of skateboard, upper frame, lower arm rod (lower frame for double arm bow), underframe, bow spring, transmission cylinder, supporting insulator and other components.
  • the DC pantograph is used to obtain DC power supply from the power supply contact network.
  • the AC pantograph is used to obtain AC power supply from the power supply contact network.
  • the AC pantograph and the DC pantograph are provided at the same time, so that the traction system of the electric vehicle can provide multi-standard power supply.
  • the AC pantograph and the DC pantograph can be set in tandem, or on the same horizontal line, which is not specifically limited here, and can be set arbitrarily according to the actual situation.
  • the AC pantograph may be an AC 25KV pantograph
  • the DC pantograph may be a DC 750V pantograph, a DC 1.5KV pantograph or a DC 3KV pantograph.
  • the power supply of 25KV AC is generally used.
  • a 750V DC pantograph, a 1.5KV DC pantograph, a 3KV DC pantograph, and an AC 25KV pantograph are generally used.
  • different voltages represent that the pantograph can withstand the corresponding power supply voltage for a long time.
  • the isolating switch is connected to the DC pantograph, used to judge whether the power supply of the non-DC system is flowing, and when the judgment result is yes, disconnect the connection to the DC pantograph.
  • the isolation switch includes: an overcurrent detection device 21 and an overcurrent protection device 22.
  • the overcurrent detection device is connected to the DC pantograph, and is used to detect whether the first current on the DC pantograph is higher than a first current threshold, and if so, send an alarm message.
  • the overcurrent protection device is connected to the overcurrent detection device, and is used to disconnect the overcurrent protection device and the overcurrent detection device based on the alarm information.
  • the overcurrent detection device is connected to the DC pantograph, and is used to detect whether the flowing current exceeds a preset range, and if it exceeds, a overcurrent alarm signal is sent.
  • the over-current protection device is connected to the over-current detection device, and is used to disconnect the over-current detection device after receiving the over-current alarm signal.
  • the isolation switch including the overcurrent detection device and the overcurrent protection device is connected to the DC pantograph, and the overcurrent detection device is used to determine whether the current from the DC pantograph exceeds the current range provided by the original DC power supply. And when it detects that the current flowing through it exceeds the preset range of the current, an overcurrent alarm signal is issued to use the overcurrent protection device to automatically disconnect the overcurrent detection device when receiving the overcurrent alarm signal .
  • the AC power supply current is much larger than the DC power supply current. Therefore, it can be judged whether the power supply is wrong by performing an overcurrent detection.
  • Overcurrent protection devices can use similar components such as DC surge arresters.
  • the DC high-voltage box is connected to the isolating switch to detect whether the voltage and current flowing through meet the requirements of the DC power supply, and disconnect the connection to the isolating switch when it does not meet the requirements of the DC power supply.
  • the AC high-voltage box is connected to the AC pantograph to detect whether the flowing voltage and current meet the AC power supply requirements, and disconnect the AC pantograph when it does not meet the AC power supply requirements.
  • the main function of the DC high-voltage box and the AC high-voltage box is to detect whether the voltage and current flowing through it meet the power supply requirements of the corresponding standards, and disconnect the connection to the upper layer when the power supply requirements are not met.
  • Non-compliance means that the transmitted power is abnormal. There may be many reasons for the abnormality, such as a component failure in the middle, abnormal upper power supply, etc., because the power supply that does not meet the requirements may not be able to pass the subsequent processing steps normally, and finally be driven The traction of the train forward.
  • this embodiment provides a specific implementation structure of a DC high-voltage tank.
  • the DC high-voltage tank includes a DC voltage sensor 31, a DC current sensor 32, and a DC circuit breaker 33.
  • the DC voltage sensor is connected to the isolating switch, and is used to detect whether the second voltage flowing through the isolating switch meets the DC voltage requirement, and if not, send a DC voltage warning signal;
  • the DC current sensor is connected to the isolation switch and the DC voltage sensor, and is used to detect whether the second current flowing through the isolation switch meets the DC current requirement, and if not, send a DC current warning signal;
  • the DC circuit breaker is connected to the DC current sensor, and is used to disconnect the DC high-voltage tank and the isolation switch based on the DC voltage early warning signal and/or the DC current early warning signal.
  • the components contained in the corresponding AC high-voltage box under the AC standard power supply are similar to those in the DC high-voltage box, and only need to replace the components with the AC standard.
  • the AC high-voltage tank includes an AC voltage transformer 41, an AC current transformer 42 and an AC circuit breaker 43.
  • the AC voltage transformer is connected to the AC pantograph to detect whether the first voltage flowing through the AC pantograph meets the AC voltage requirements, and if not, to send an AC voltage warning signal;
  • the AC current transformer is connected to the AC pantograph and the AC voltage transformer, and is used to detect whether the first current flowing through the AC pantograph meets the AC current requirement, if not, send AC current warning signal;
  • the AC circuit breaker is connected to the AC current transformer and used to disconnect the AC high-voltage tank and the AC pantograph based on the AC voltage early warning signal and/or the AC current early warning signal.
  • the traction transformer is connected to the AC voltage box, and the primary side of the traction converter is returned to the substation from the steel rail through the grounding device, which is used to reduce the power supply voltage of the AC system transmitted.
  • Current transformers are provided on the primary side and grounding end of the traction transformer for differential protection of the traction transformer.
  • the traction winding of the traction transformer is used as the smoothing reactance, which effectively reduces the weight of the locomotive and saves the space for equipment layout. It is realized by the multi-level transfer switch inside the converter.
  • the input end of the traction auxiliary converter is connected to the traction transformer, and the output end is connected to the traction motor, which is used for auxiliary conversion processing of the power supply transmitted by the traction transformer to obtain the traction voltage used by the traction motor.
  • Traction motor used to convert traction voltage into corresponding traction force.
  • the scheme provides a multi-standard power supply traction system for EMUs to increase the diversity of EMUs.
  • the secondary winding of the traction transformer can also be used as smoothing reactance, which saves circuit space and improves economic performance.
  • this embodiment provides a multi-standard powered electric vehicle traction system, which further includes: an alarm device 51.
  • the alarm device is connected to the isolating switch and issues an alarm based on the alarm information.
  • the overcurrent alarm signal can be transmitted to the train driver's cab, so that the train driver can change the power supply system in time after receiving the overcurrent alarm signal, and change the wrong power supply system from the source in time, so that the DC pantograph does not Withstand the high-voltage power supply of AC system for a long time, which can increase the service life of components.
  • this embodiment provides a multi-standard power supply electric vehicle traction system, further comprising: a reminder device 61.
  • the reminder device is connected to the isolation switch, and sends a reminder signal based on the type of the alarm information.
  • the reminder device sends different reminder signals according to the type of the received warning signal, which is more convenient for the driver to judge and avoid distracted driving errors.
  • this embodiment provides a specific circuit diagram of a multi-standard powered electric vehicle traction system.
  • the embodiments of the present invention provide a multi-system powered traction system for electric vehicles, including: AC pantograph, DC pantograph, disconnector, AC high voltage box, DC high voltage box, traction transformer, traction auxiliary converter And traction motor.
  • the AC high-voltage tank is connected to the AC pantograph to detect whether the first voltage and the first current flowing through the AC pantograph are AC power supply parameters, and if not, disconnect the AC high-voltage The box and the AC pantograph.
  • the isolating switch is connected to the DC pantograph to determine whether the voltage system on the DC pantograph is a non-DC system, and if so, disconnect the isolating switch from the DC pantograph.
  • the DC high-voltage box is connected to the isolation switch to detect whether the second voltage flowing through the isolation switch and the second current are DC power supply parameters, and if not, disconnect the DC high-voltage box from the isolation switch .
  • the traction transformer is connected to the AC high-voltage tank and the DC high-voltage tank, the primary side of the traction transformer is connected to a grounding device, and the primary side and grounding end of the traction transformer are provided with current transformers.
  • the input end of the traction auxiliary converter is connected to the traction transformer, and the output end is connected to the traction motor. It can be seen that the scheme provides a multi-standard power supply traction system for EMUs to increase the diversity of EMUs. In addition to this, the secondary winding of the traction transformer can also be used as smoothing reactance, which saves circuit space and improves economic performance.
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Abstract

本发明实施例提供了一种多制式供电的动车牵引系统，包括：交流受电弓、直流受电弓、隔离开关、交流高压箱、直流高压箱、牵引变压器、牵引辅助变流器以及牵引电机。其中，交流高压箱与交流受电弓相连，隔离开关与直流受电弓相连，直流高压箱与隔离开关相连。牵引变压器与交流高压箱以及直流高压箱相连，牵引变压器的原边与接地装置相连，且牵引变压器的原边以及接地端设置有电流互感器。牵引辅助变流器的输入端与牵引变压器相连，输出端与牵引电机相连。可见，方案既能实现交流制式供电，又能实现直流制式供电，提高动车组的多样性。除此，还可以将牵引变压器的二次侧绕组作为平波电抗，节省电路占用空间，提高经济性能。

Description

一种多制式供电的动车牵引系统
本申请要求于2018年12月5日提交中国专利局、申请号为201811482748.4、发明名称为“一种多制式供电的动车牵引系统”以及申请号为201822038028.0、实用新型名称为“一种多制式供电的动车牵引系统”的国内申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及动车技术领域，具体涉及一种多制式供电的动车牵引系统。
背景技术
目前，动车组牵引系统只具有一种供电制式，例如，采用25kV供电制式，经过动车组上的牵引变压器进行电压变换，然后将变换后的电压输入牵引变流器，经过整流、逆变，输出至牵引电机，进而实现为牵引电机的供电。
然而随着动车组的快速发展，单一的供电制式限制了动车组的多样性，因此，如何提供一种多制式供电的动车牵引系统，提高动车组的多样性，是本领域技术人员亟待解决的一大技术难题。
发明内容
有鉴于此，本发明实施例提供了一种多制式供电的动车牵引系统，能够提高动车组的多样性。
为实现上述目的，本发明实施例提供如下技术方案：
一种多制式供电的动车牵引系统，包括：交流受电弓、直流受电弓、隔离开关、交流高压箱、直流高压箱、牵引变压器、牵引辅助变流器以及牵引电机，
所述交流高压箱与所述交流受电弓相连，用于检测流经所述交流受电弓的第一电压以及第一电流是否为交流供电参数，如果否，断开所述交流高压箱与所述交流受电弓；
所述隔离开关与所述直流受电弓相连，用于判断所述直流受电弓上的电压制式是否为非直流制式时，如果是，断开所述隔离开关与所述直流受 电弓；
所述直流高压箱与所述隔离开关相连，用于检测流经所述隔离开关的第二电压以及第二电流是否为直流供电参数，如果否，断开所述直流高压箱与所述隔离开关；
所述牵引变压器与所述交流高压箱以及所述直流高压箱相连，所述牵引变压器的原边与接地装置相连，且所述牵引变压器的原边以及接地端设置有电流互感器；
所述牵引辅助变流器的输入端与所述牵引变压器相连，输出端与所述牵引电机相连。
可选的，所述隔离开关包括：过流检测装置以及过流保护装置，
所述过流检测装置与所述直流受电弓相连，用于检测所述直流受电弓上的所述第一电流是否高于第一电流阈值，如果是，发送报警信息；
所述过流保护装置与所述过流检测装置相连，用于基于所述报警信息，断开所述过流保护装置以及所述过流检测装置。
可选的，还包括：警报装置，
所述警报装置与所述隔离开关相连，基于所述报警信息，发出警报。
可选的，所述直流高压箱包括：直流电压传感器、直流电流传感器以及直流断路器，
所述直流电压传感器与所述隔离开关相连，用于检测流经所述隔离开关的第二电压是否符合直流电压要求，如果否，发送直流电压预警信号；
所述直流电流传感器与所述隔离开关以及所述直流电压传感器均相连，用于检测流经所述隔离开关的第二电流是否符合直流电流要求，如果否，发送直流电流预警信号；
所述直流断路器与所述直流电流传感器相连，用于基于所述直流电压预警信号和/或所述直流电流预警信号，断开所述直流高压箱与所述隔离开关。
可选的，所述交流高压箱包括：交流电压互感器、交流电流互感器以及交流断路器，
所述交流电压互感器与所述交流受电弓相连，用于检测流经所述交流 受电弓的所述第一电压是否符合交流电压要求，如果否，发送交流电压预警信号；
所述交流电流互感器与所述交流受电弓以及所述交流电压互感器均相连，用于检测流经所述交流受电弓的所述第一电流是否符合交流电流要求，如果否，发送交流电流预警信号；
所述交流断路器与所述交流电流互感器相连，用于基于所述交流电压预警信号和/或所述交流电流预警信号，断开所述交流高压箱与所述交流受电弓。
可选的，所述过流保护装置包括直流避雷器。
可选的，还包括：提醒装置，
所述提醒装置与所述隔离开关相连，基于所述报警信息的类型，发出提醒信号。
可选的，所述交流受电弓为交流25KV受电弓，所述直流受电弓为直流750V受电弓、直流1.5KV受电弓或直流3KV受电弓。
基于上述技术方案，本发明实施例提供了一种多制式供电的动车牵引系统，包括：交流受电弓、直流受电弓、隔离开关、交流高压箱、直流高压箱、牵引变压器、牵引辅助变流器以及牵引电机。其中，所述交流高压箱与所述交流受电弓相连，用于检测流经所述交流受电弓的第一电压以及第一电流是否为交流供电参数，如果否，断开所述交流高压箱与所述交流受电弓。所述隔离开关与所述直流受电弓相连，用于判断所述直流受电弓上的电压制式是否为非直流制式时，如果是，断开所述隔离开关与所述直流受电弓。所述直流高压箱与所述隔离开关相连，用于检测流经所述隔离开关的第二电压以及第二电流是否为直流供电参数，如果否，断开所述直流高压箱与所述隔离开关。所述牵引变压器与所述交流高压箱以及所述直流高压箱相连，所述牵引变压器的原边与接地装置相连，且所述牵引变压器的原边以及接地端设置有电流互感器。所述牵引辅助变流器的输入端与所述牵引变压器相连，输出端与所述牵引电机相连。可见，方案提供了一种多制式供电的动车牵引系统，提高动车组的多样性。除此，还可以将牵引变压器的二次侧绕组作为平波电抗，节省电路占用空间，提高经济性能。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1为本发明实施例提供的一种多制式供电的动车牵引系统的结构示意图；
图2为本实施例提供的一种隔离开关的具体实现结构的示意图；
图3为本实施例中提供的一种直流高压箱的具体实现结构的示意图；
图4为本实施例中提供的一种交流高压箱的具体实现结构的示意图；
图5为本实施例提供的一种多制式供电的动车牵引系统的结构示意图；
图6为本实施例提供的一种多制式供电的动车牵引系统的又一结构示意图；
图7为本实施例提供了一种多制式供电的动车牵引系统的具体电路图。
具体实施方式
发明人发现，当前的动车组牵引系统只具有一种供电制式，例如，采用25kV供电制式，经过动车组上的牵引变压器进行电压变换，然后将变换后的电压输入牵引变流器，经过整流、逆变，输出至牵引电机，进而实现为牵引电机的供电。
然而随着动车组的快速发展，单一的供电制式限制了动车组的多样性，对存在多种供电制式下的供电网络，无法满足跨供电制式运输的需求。
基于此，本实施例提供了一种多制式供电的动车牵引系统，请参阅图1，图1为本发明实施例提供的一种多制式供电的动车牵引系统的结构示意图。该多制式供电的动车牵引系统包括：交流受电弓11、直流受电弓12、隔离开关13、交流高压箱14、直流高压箱15、牵引变压器16、牵引辅助变流器17以及牵引电机18。
其中，所述交流高压箱与所述交流受电弓相连，用于检测流经所述交流受电弓的第一电压以及第一电流是否为交流供电参数，如果否，断开所述交流高压箱与所述交流受电弓。
所述隔离开关与所述直流受电弓相连，用于判断所述直流受电弓上的电压制式是否为非直流制式时，如果是，断开所述隔离开关与所述直流受电弓。
所述直流高压箱与所述隔离开关相连，用于检测流经所述隔离开关的第二电压以及第二电流是否为直流供电参数，如果否，断开所述直流高压箱与所述隔离开关。
所述牵引变压器与所述交流高压箱以及所述直流高压箱相连，所述牵引变压器的原边与接地装置相连，且所述牵引变压器的原边以及接地端设置有电流互感器。
所述牵引辅助变流器的输入端与所述牵引变压器相连，输出端与所述牵引电机相连。
具体的，受电弓是为包括高铁、动车在内的电力牵引机车从供电接触网中取得电能的电气设备，通常安装在机车或动车车顶上。受电弓可分单臂弓和双臂弓两种，均由滑板、上框架、下臂杆(双臂弓用下框架)、底架、升弓弹簧、传动气缸、支持绝缘子等部件组成。
其中，直流受电弓用于从供电接触网中得到直流制式的供电。交流受电弓用于从供电接触网中得到交流制式的供电。在本实施例中，同时具有交流受电弓以及直流受电弓，使得本动车牵引系统具有能够进行多制式供电。
需要说明的是，在本实施例中，交流受电弓以及直流受电弓可以一前一后设置，还可以设置在同一水平线上，此处并不做具体限定，根据实际情况可以随意设置。
其中，所述交流受电弓可以为交流25KV受电弓，所述直流受电弓可以为直流750V受电弓、直流1.5KV受电弓或直流3KV受电弓。具体的，在交流制式上通常均使用交流25KV的供电，在直流制式上通常使用直流750V受电弓、直流1.5KV受电弓、直流3KV受电弓以及交流25KV受电 弓。其中，不同电压代表着受电弓能够长时间承受相应的供电电压。
隔离开关与直流受电弓相连，用于判断是否流入了非直流制式的供电，并在判定结果为是时，断开与直流电弓的连接。
如图2所示，本实施例中提供了一种隔离开关的具体实现结构，所述隔离开关包括：过流检测装置21以及过流保护装置22。
其中，所述过流检测装置与所述直流受电弓相连，用于检测所述直流受电弓上的所述第一电流是否高于第一电流阈值，如果是，发送报警信息。
所述过流保护装置与所述过流检测装置相连，用于基于所述报警信息，断开所述过流保护装置以及所述过流检测装置。
示意性的，过流检测装置与直流受电弓相连，用于检测流经的电流是否超过预设范围，若超过，则发送过流警报信号。过流保护装置与交过流检测装置相连，用于在接收到过流警报信号后断开与过流检测装置的连接。
包含过流检测装置和过流保护装置的隔离开关与直流受电弓相连，利用过流检测装置来判别从直流受电弓传来的电流是否超过原定的直流制式供电所提供的电流范围，并在检测到流经此处的电流超过该电流的预设范围时，发出过流警报信号，以利用过流保护装置在接收到该过流警报信号时自动断开与过流检测装置的连接。
当直流受电弓上引入了交流制式的供电时，交流制式的供电电流远大于直流制式的供电电流，因此可以通过进行过流检测，即可判断是否上错电。具体的，可承担该过流检测功能的元器件多种多样，可以灵活选择最为合适的元器件。过流保护装置可以采用诸如直流避雷器等类似元器件。
直流高压箱与隔离开关相连，用于检测流经的电压和电流是否符合直流供电要求，并在不符合直流供电要求时断开与隔离开关的连接。
交流高压箱与交流受电弓相连，用于检测流经的电压和电流是否符合交流供电要求，并在不符合交流供电要求时断开与交流受电弓的连接。
其中，直流高压箱与交流高压箱的主要作用是检测流经此处的电压和电流是否符合相应制式供电要求，并在不符合供电要求时断开与上一层的 连接。不符合要求即代表传输过来的电能异常，造成异常的原因可能有很多，例如中间某个元器件故障、上层供电异常等等，因为不符合要求的供电可能无法正常通过后续处理步骤，最终得到驱动列车前进的牵引力。
如图3所示，本实施例中提供了一种直流高压箱的具体实现结构，该直流高压箱包括：直流电压传感器31、直流电流传感器32以及直流断路器33。
其中，所述直流电压传感器与所述隔离开关相连，用于检测流经所述隔离开关的第二电压是否符合直流电压要求，如果否，发送直流电压预警信号；
所述直流电流传感器与所述隔离开关以及所述直流电压传感器均相连，用于检测流经所述隔离开关的第二电流是否符合直流电流要求，如果否，发送直流电流预警信号；
所述直流断路器与所述直流电流传感器相连，用于基于所述直流电压预警信号和/或所述直流电流预警信号，断开所述直流高压箱与所述隔离开关。
相应的，交流制式供电下对应的交流高压箱中包含的元器件与直流高压箱中的类似，只需将元器件都更换为交流标准的即可。如图4所示，所述交流高压箱包括：交流电压互感器41、交流电流互感器42以及交流断路器43。
其中，所述交流电压互感器与所述交流受电弓相连，用于检测流经所述交流受电弓的所述第一电压是否符合交流电压要求，如果否，发送交流电压预警信号；
所述交流电流互感器与所述交流受电弓以及所述交流电压互感器均相连，用于检测流经所述交流受电弓的所述第一电流是否符合交流电流要求，如果否，发送交流电流预警信号；
所述交流断路器与所述交流电流互感器相连，用于基于所述交流电压预警信号和/或所述交流电流预警信号，断开所述交流高压箱与所述交流受电弓。
牵引变压器与交流电压箱相连，牵引变流器原边经接地装置由钢轨回流至变电站，用于降低传输来的交流制式的供电电压。在牵引变压器原边及接地端均设置有电流互感器，用于牵引变压器的差动保护。
直流模式下，利用牵引变压器的牵引绕组作平波电抗，有效减少机车的重量，节省设备布置空间，通过变流器内部多级转换开关实现。
牵引辅助变流器其输入端与牵引变压器相连、输出端与牵引电机相连，用于对牵引变压器传输来的供电进行辅助变流处理，得到牵引电机使用的牵引电压。
牵引电机，用于将牵引电压转换为相应的牵引力。
可见，方案提供了一种多制式供电的动车牵引系统，提高动车组的多样性。除此，还可以将牵引变压器的二次侧绕组作为平波电抗，节省电路占用空间，提高经济性能。
在上述实施例的基础上，如图5所示，本实施例提供了多制式供电的动车牵引系统，还包括：警报装置51。
其中，所述警报装置与所述隔离开关相连，基于所述报警信息，发出警报。
即，可以将该过流警报信号传给列车司机室，以使列车驾驶人员在接收到该过流警报信号后及时更改供电制式，从源头及时改变错误的供电制式，以使直流受电弓不长时间的承受交流制式的高压供电，能够提升元器件的使用寿命。
在上述实施例的基础上，如图6所示，本实施例提供了多制式供电的动车牵引系统，还包括：提醒装置61。
其中，所述提醒装置与所述隔离开关相连，基于所述报警信息的类型，发出提醒信号。
即，由该提醒装置根据接收到的警报信号的种类发出不同的提醒信号，更加方便驾驶人员的判断，以避免分心出现驾驶错误。
具体的，如图7所示，本实施例提供了一种多制式供电的动车牵引系统的具体电路图。
综上，本发明实施例提供了一种多制式供电的动车牵引系统，包括：交流受电弓、直流受电弓、隔离开关、交流高压箱、直流高压箱、牵引变压器、牵引辅助变流器以及牵引电机。其中，所述交流高压箱与所述交流受电弓相连，用于检测流经所述交流受电弓的第一电压以及第一电流是否为交流供电参数，如果否，断开所述交流高压箱与所述交流受电弓。所述隔离开关与所述直流受电弓相连，用于判断所述直流受电弓上的电压制式是否为非直流制式时，如果是，断开所述隔离开关与所述直流受电弓。所述直流高压箱与所述隔离开关相连，用于检测流经所述隔离开关的第二电压以及第二电流是否为直流供电参数，如果否，断开所述直流高压箱与所述隔离开关。所述牵引变压器与所述交流高压箱以及所述直流高压箱相连，所述牵引变压器的原边与接地装置相连，且所述牵引变压器的原边以及接地端设置有电流互感器。所述牵引辅助变流器的输入端与所述牵引变压器相连，输出端与所述牵引电机相连。可见，方案提供了一种多制式供电的动车牵引系统，提高动车组的多样性。除此，还可以将牵引变压器的二次侧绕组作为平波电抗，节省电路占用空间，提高经济性能。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。对于实施例公开的装置而言，由于其与实施例公开的方法相对应，所以描述的比较简单，相关之处参见方法部分说明即可。
专业人员还可以进一步意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方 式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
结合本文中所公开的实施例描述的方法或算法的步骤可以直接用硬件、处理器执行的软件模块，或者二者的结合来实施。软件模块可以置于随机存储器(RAM)、内存、只读存储器(ROM)、电可编程ROM、电可擦除可编程ROM、寄存器、硬盘、可移动磁盘、CD-ROM、或技术领域内所公知的任意其它形式的存储介质中。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (8)

  1. 一种多制式供电的动车牵引系统，其特征在于，包括：交流受电弓、直流受电弓、隔离开关、交流高压箱、直流高压箱、牵引变压器、牵引辅助变流器以及牵引电机，
    所述交流高压箱与所述交流受电弓相连，用于检测流经所述交流受电弓的第一电压以及第一电流是否为交流供电参数，如果否，断开所述交流高压箱与所述交流受电弓；
    所述隔离开关与所述直流受电弓相连，用于判断所述直流受电弓上的电压制式是否为非直流制式时，如果是，断开所述隔离开关与所述直流受电弓；
    所述直流高压箱与所述隔离开关相连，用于检测流经所述隔离开关的第二电压以及第二电流是否为直流供电参数，如果否，断开所述直流高压箱与所述隔离开关；
    所述牵引变压器与所述交流高压箱以及所述直流高压箱相连，所述牵引变压器的原边与接地装置相连，且所述牵引变压器的原边以及接地端设置有电流互感器；
    所述牵引辅助变流器的输入端与所述牵引变压器相连，输出端与所述牵引电机相连。
  2. 根据权利要求1所述的多制式供电的动车牵引系统，其特征在于，所述隔离开关包括：过流检测装置以及过流保护装置，
    所述过流检测装置与所述直流受电弓相连，用于检测所述直流受电弓上的所述第一电流是否高于第一电流阈值，如果是，发送报警信息；
    所述过流保护装置与所述过流检测装置相连，用于基于所述报警信息，断开所述过流保护装置以及所述过流检测装置。
  3. 根据权利要求2所述的多制式供电的动车牵引系统，其特征在于，还包括：警报装置，
    所述警报装置与所述隔离开关相连，基于所述报警信息，发出警报。
  4. 根据权利要求1所述的多制式供电的动车牵引系统，其特征在于，所述直流高压箱包括：直流电压传感器、直流电流传感器以及直流断路器，
    所述直流电压传感器与所述隔离开关相连，用于检测流经所述隔离开关的第二电压是否符合直流电压要求，如果否，发送直流电压预警信号；
    所述直流电流传感器与所述隔离开关以及所述直流电压传感器均相连，用于检测流经所述隔离开关的第二电流是否符合直流电流要求，如果否，发送直流电流预警信号；
    所述直流断路器与所述直流电流传感器相连，用于基于所述直流电压预警信号和/或所述直流电流预警信号，断开所述直流高压箱与所述隔离开关。
  5. 根据权利要求1所述的多制式供电的动车牵引系统，其特征在于，所述交流高压箱包括：交流电压互感器、交流电流互感器以及交流断路器，
    所述交流电压互感器与所述交流受电弓相连，用于检测流经所述交流受电弓的所述第一电压是否符合交流电压要求，如果否，发送交流电压预警信号；
    所述交流电流互感器与所述交流受电弓以及所述交流电压互感器均相连，用于检测流经所述交流受电弓的所述第一电流是否符合交流电流要求，如果否，发送交流电流预警信号；
    所述交流断路器与所述交流电流互感器相连，用于基于所述交流电压预警信号和/或所述交流电流预警信号，断开所述交流高压箱与所述交流受电弓。
  6. 根据权利要求2所述的多制式供电的动车牵引系统，其特征在于，所述过流保护装置包括直流避雷器。
  7. 根据权利要求2所述的多制式供电的动车牵引系统，其特征在于，还包括：提醒装置，
    所述提醒装置与所述隔离开关相连，基于所述报警信息的类型，发出提醒信号。
  8. 根据权利要求1所述的多制式供电的动车牵引系统，其特征在于，所述交流受电弓为交流25KV受电弓，所述直流受电弓为直流750V受电弓、直流1.5KV受电弓或直流3KV受电弓。
PCT/CN2018/120148 2018-12-05 2018-12-10 一种多制式供电的动车牵引系统 Ceased WO2020113602A1 (zh)

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