Mobile charging intelligent rail highway power supply system and power supply method thereof

Abstract

The invention relates to the technical field of power supply, and provides a mobile charging intelligent rail highway power supply system and a power supply method thereof, which solve the problem that the existing power supply system has a single system and is difficult to meet the requirements of high efficiency, safety and flexibility, the mobile charging intelligent rail highway power supply system comprises a high-voltage power transmission line, a charging rectification station, a contact net, a pantograph and other core components, the innovation point lies in that an intelligent power supply management unit, a multi-system compatible unit and a contact network power supply unit are introduced, so that intelligent management, multi-system compatibility and real-time monitoring of the electric energy are realized; according to the invention, the power supply mode can be adjusted according to the external power supply mode, and the efficiency and safety of system operation are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply, and provides a mobile charging smart rail highway power supply system and a power supply method thereof. Background Art

[0002] The mobile charging smart rail highway power supply system is an important part of maintaining the normal operation of urban vehicles. It is responsible for providing a stable and reliable power supply to dual-source heavy trucks. The mobile charging smart rail highway power supply system is usually composed of multiple key components such as high-voltage transmission lines, charging rectifiers, contact networks, pantographs, etc., which work together to improve the smooth transmission and efficient use of electric energy.

[0003] In the existing trolleybus power supply systems, most of them adopt a single power supply system. Although the single power supply system meets the basic needs of the vehicle to a certain extent, it is inadequate in the face of complex and changeable operating environments and ever-increasing energy efficiency requirements. In particular, in terms of the balance between cost-effectiveness and operational safety, a single power supply system often fails to achieve ideal results.

[0004] However, the existing trolleybus system has the following technical pain points in use. The most prominent one is that a single power supply system is difficult to take into account both cost-effectiveness and operational safety. On the one hand, in order to pursue cost-effectiveness, some safety performance has to be sacrificed. On the other hand, if safety is overemphasized, the cost will rise sharply, affecting the overall economy of the system. In addition, the existing power supply system lacks sufficient flexibility and adaptability when facing different operating conditions, making it difficult to achieve the optimal selection of power supply systems. The above problems have, to a certain extent, restricted the further development and application of mobile charging smart rail highway power supply systems. Summary of the invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a mobile charging smart rail highway power supply system and a power supply method thereof. Through technological innovation, the present invention overcomes the technical pain points of the existing power supply system and provides strong support for the further development and application of the mobile charging smart rail highway power supply system. Specifically, the present invention proposes an efficient, safe and flexible power supply solution that can meet the higher requirements of future vehicles for the power supply system and promote the sustainable development of the vehicle field.

[0006] In order to solve the above technical problems, the specific technical solutions of the present invention are as follows: In a first aspect, the present invention provides a mobile charging smart rail highway power supply system, comprising: High-voltage transmission line: used to transmit 10KV / 35KV AC power; Charging rectifier: used to convert the alternating current transmitted by high-voltage transmission lines into direct current or alternating current of a specific voltage level.

[0007] Contact network: used as a transmission medium for direct current or alternating current, in contact with the pantograph to supply power to vehicles and roads. Contact networks include DC1500V-0, DC+750V--750V and AC2000V; Pantograph: installed on the vehicle and in contact with the overhead wire, it introduces the electric energy on the overhead wire into the vehicle; DC-DC converter: used to reduce the voltage of the current on the contact network and convert DC1500V-0, DC+750V--750V or AC2000V into the voltage required by the vehicle's internal equipment; Inverter: used to convert DC power into AC power, or reconvert AC power into a voltage level suitable for vehicle use; Permanent magnet synchronous AC motor: used to receive the AC provided by the inverter as the power source of the vehicle; Control device: establishes electrical connection with high-voltage transmission line, charging rectifier station, contact network, pantograph, DC-DC converter, inverter and permanent magnet synchronous AC motor, and is used to send control commands to high-voltage transmission line, charging rectifier station, contact network, pantograph, DC-DC converter, inverter and permanent magnet synchronous AC motor; The control command includes high-voltage transmission lines transmitting AC power to charging rectifier stations, which convert it into DC or AC power of a specific voltage level and transmit it to the contact network. The contact network contacts the pantograph and introduces the electric energy into the vehicle. Inside the vehicle, the electric energy is stepped down by a DC-DC converter and converted into a voltage that meets the voltage requirements of the vehicle's internal equipment. The inverter converts the electric energy into an AC form suitable for the vehicle to drive the permanent magnet synchronous AC motor vehicle equipment to operate.

[0008] Furthermore, the mobile charging smart rail highway power supply system provided by the present invention, the control device includes: an intelligent power supply management unit, a multi-standard compatible unit and a contact network power supply unit; The intelligent power management unit sends instructions to the multi-standard compatible unit to identify the standard of the current external power supply and adjust the power conversion strategy according to the identification result; The multi-standard compatible unit feeds back the converted power status information to the intelligent power supply management unit, and at the same time provides the overhead power supply unit with power that meets the internal standards of the system; The contact network power supply unit receives electric energy from the multi-standard compatible unit and transmits it to the vehicle, while reporting the contact status and power transmission status to the intelligent power supply management unit.

[0009] Furthermore, in the mobile charging smart rail highway power supply system provided by the present invention, the intelligent power supply management unit is also used for: Collect real-time data from the high-voltage transmission lines, charging rectifiers, and contact networks of the power supply system. The real-time data includes voltage, current, power factor, and temperature parameters; Pre-process the collected real-time data and integrate the processed data to form a data set for analysis; Use data analysis algorithms to conduct in-depth analysis of the integrated data set, and identify the efficiency of system operation by comparing historical data with preset standards. The efficiency of system operation includes power transmission efficiency and equipment utilization; Use the preset fault prediction algorithm to predict the future state of the power supply system, and evaluate the probability of failure and the scope of impact based on historical fault data and current system operation status; When the analysis results show that there is a potential failure risk or an impending failure is predicted, the intelligent power supply management unit triggers the early warning mechanism of the early warning unit of the background management system; The early warning unit of the background management system establishes a connection with the intelligent power supply management unit. The early warning unit of the background management system collects the system operation status data of the intelligent power supply management unit in real time. The system operation status data of the intelligent power supply management unit includes voltage, current, power factor, temperature parameters and abnormal status data; Set warning thresholds based on historical data, industry standards, and system requirements. The warning thresholds include voltage fluctuation range, current overload threshold, and temperature upper limit. Real-time monitoring of system operation status data, comparing the monitoring system operation status data with the warning threshold, and evaluating whether the system is in a normal or warning state; When the operating status data of the monitoring system exceeds the warning threshold, the warning unit of the background management system automatically triggers the warning mechanism and generates warning information.

[0010] Furthermore, in the mobile charging smart rail highway power supply system provided by the present invention, the multi-standard compatible unit is also used for: Monitor the external power supply connected to the power supply system, identify whether it is direct current or alternating current, and determine the specific frequency of the alternating current; Compare the identified external power supply type with the standard type inside the power supply system; Determine whether the external power supply format is compatible with the internal equipment of the power supply system, and whether format conversion is required; If it is determined that the external power supply standard is incompatible with the internal power supply system, the multi-standard compatible unit will prepare for power conversion; Start the power conversion process to convert the power from the external power source into a form of power that is uniformly used within the power supply system; For direct current, it includes adjustment of voltage level; for alternating current, it includes frequency conversion and voltage adjustment.

[0011] Furthermore, in the mobile charging smart rail highway power supply system provided by the present invention, the overhead power supply unit is also used for: The sensors installed on the contact network and the pantograph are used to monitor the contact status between the contact network and the pantograph in real time. Monitoring parameters include contact pressure, contact surface wear, and contact wire temperature changes; According to the contact status monitored in real time, the transmission process of electric energy from the contact network to the vehicle is controlled. According to the actual needs of the vehicle, which include acceleration, deceleration and constant speed driving, the transmission power is dynamically adjusted: Continuously monitor the operating status of the contact network and pantograph, as well as abnormal conditions during power transmission. Through data analysis and comparison, detect potential fault points including contact network breakage and excessive pantograph wear.

[0012] In a second aspect, the present invention provides a mobile charging smart rail highway power supply method, which is applied to the mobile charging smart rail highway power supply system, comprising: Step S101: The high-voltage transmission line is responsible for transmitting 10KV / 35KV AC power to the charging rectifier station, where the AC power is converted into DC power or AC power of a specific voltage level; Step S102: The converted electric energy is transmitted to the overhead contact network. The overhead contact network serves as a transmission medium for electric energy. The electric energy is introduced into the vehicle through contact with the pantograph. The overhead contact network includes DC1500V-0, DC+750V--750V and AC2000V. Step S103: Inside the vehicle, the DC1500V-0, DC+750V--750V and AC2000V currents are stepped down by the DC-DC converter to be converted into voltages that meet the requirements of the internal equipment of the vehicle, and the inverter converts the DC power into an AC power form suitable for the vehicle; Step S104: the AC power converted by the inverter is used to drive the permanent magnet synchronous AC motor, which serves as a power source for the vehicle to drive the vehicle equipment to operate; Step S105: The control device establishes electrical connection with the high-voltage transmission line, charging rectifier station, contact network, pantograph, DC-DC converter, inverter and permanent magnet synchronous AC motor, and the control device is responsible for sending control commands to the high-voltage transmission line, charging rectifier station, contact network, pantograph, DC-DC converter, inverter and permanent magnet synchronous AC motor.

[0013] Furthermore, the mobile charging smart rail highway power supply method provided by the present invention, step S105 includes: Step S501, the intelligent power supply management unit sends an instruction to the multi-standard compatible unit to identify the standard of the current external power supply and adjust the power conversion strategy according to the identification result; Step S502, the multi-standard compatible unit feeds back the converted power state information to the intelligent power supply management unit, and at the same time provides the overhead power supply unit with power that meets the internal standards of the system; Step S503, the contact network power supply unit receives electric energy from the multi-standard compatible unit and transmits it to the vehicle, and reports the contact status and power transmission status to the intelligent power supply management unit.

[0014] Furthermore, the mobile charging smart rail highway power supply method provided by the present invention, step S501 includes: Collect real-time data from the high-voltage transmission lines, charging rectifiers, and contact networks of the power supply system. The real-time data includes voltage, current, power factor, and temperature parameters; Pre-process the collected real-time data and integrate the processed data to form a data set for analysis; Use data analysis algorithms to conduct in-depth analysis of the integrated data set, and identify the efficiency of system operation by comparing historical data with preset standards. The efficiency of system operation includes power transmission efficiency and equipment utilization; Use the preset fault prediction algorithm to predict the future state of the power supply system, and evaluate the probability of failure and the scope of impact based on historical fault data and current system operation status; When the analysis results show that there is a potential failure risk or an impending failure is predicted, the intelligent power supply management unit triggers the early warning mechanism of the early warning unit of the background management system; The early warning unit of the background management system establishes a connection with the intelligent power supply management unit. The early warning unit of the background management system collects the system operation status data of the intelligent power supply management unit in real time. The system operation status data of the intelligent power supply management unit includes voltage, current, power factor, temperature parameters and abnormal status data; Set warning thresholds based on historical data, industry standards, and system requirements. The warning thresholds include voltage fluctuation range, current overload threshold, and temperature upper limit. Real-time monitoring of system operation status data, comparing the monitoring system operation status data with the warning threshold, and evaluating whether the system is in a normal or warning state; When the operating status data of the monitoring system exceeds the warning threshold, the warning unit of the background management system automatically triggers the warning mechanism and generates warning information.

[0015] Furthermore, the mobile charging smart rail highway power supply method provided by the present invention, step S502 includes: Monitor the external power supply connected to the power supply system, identify whether it is direct current or alternating current, and determine the specific frequency of the alternating current; Compare the identified external power supply type with the standard type inside the power supply system; Determine whether the external power supply format is compatible with the internal equipment of the power supply system, and whether format conversion is required; If it is determined that the external power supply standard is incompatible with the internal power supply system, the multi-standard compatible unit will prepare for power conversion; Start the power conversion process to convert the power from the external power source into a form of power that is uniformly used within the power supply system; For direct current, it includes adjustment of voltage level; for alternating current, it includes frequency conversion and voltage adjustment.

[0016] Furthermore, the mobile charging smart rail highway power supply method provided by the present invention, step S503 includes: The sensors installed on the contact network and the pantograph are used to monitor the contact status between the contact network and the pantograph in real time. Monitoring parameters include contact pressure, contact surface wear, and contact wire temperature changes; According to the contact status monitored in real time, the transmission process of electric energy from the contact network to the vehicle is controlled. According to the actual needs of the vehicle, which include acceleration, deceleration and constant speed driving, the transmission power is dynamically adjusted: Continuously monitor the operating status of the contact network and pantograph, as well as abnormal conditions during power transmission, and detect potential fault points through data analysis and comparison. Potential fault points include contact network breakage and excessive pantograph wear.

[0017] The beneficial effects of the present invention are mainly reflected in the following aspects: Through the multi-standard compatible unit, automatic identification and conversion of external power supply standards are realized, so that the power supply system can adapt to different power supply environments and improve the flexibility and adaptability of the system.

[0018] The intelligent power supply management unit collects data from various parts of the system (such as high-voltage transmission lines, charging rectifier stations, contact networks, etc.) in real time, and uses data analysis algorithms and fault prediction algorithms to optimize system operations, thereby improving power transmission efficiency and equipment utilization.

[0019] The intelligent power supply management unit can monitor the real-time operating status of the system, predict potential failure risks through data analysis, and promptly trigger early warning mechanisms (including sound and light alarms, SMS notifications, and email notifications), effectively reducing the occurrence of failures and shortening failure response time.

[0020] The overhead power supply unit uses sensors to monitor the contact status between the overhead line and the pantograph in real time, and dynamically adjusts the transmission power according to the actual needs of the vehicle (such as acceleration, deceleration, and constant speed driving), thereby improving the stability and efficiency of power transmission.

[0021] The combined use of the inverter and the DC-DC converter enables the system to flexibly convert electrical energy into a voltage and current form suitable for use by the vehicle's internal equipment, improving the system's versatility and compatibility.

[0022] To sum up, the present invention effectively solves the pain points of the existing mobile charging smart rail highway power supply system in terms of cost-effectiveness, operational safety, flexibility and reliability through technological innovation and intelligent management, and provides strong support for the further development and application of the mobile charging smart rail highway power supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on the drawings without paying any creative labor.

[0024] Figure 1 A schematic diagram of a mobile charging smart rail highway power supply method provided in an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the vehicle power supply method provided by the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The technical solutions provided by the embodiments of the present invention are described in detail below in conjunction with the drawings.

[0027] In order to better understand the purpose of the present invention, the present invention is described in further detail below.

[0028] In a first aspect, the present invention provides a mobile charging smart rail highway power supply system, comprising: High-voltage transmission line: used to transmit 10KV / 35KV AC power; Charging rectifier: used to convert the alternating current transmitted by high-voltage transmission lines into direct current or alternating current of a specific voltage level.

[0029] Contact network: used as a transmission medium for direct current or alternating current, in contact with the pantograph to supply power to vehicles and roads. Contact networks include DC1500V-0, DC+750V--750V and AC2000V; Pantograph: installed on the vehicle and in contact with the overhead wire, it introduces the electric energy on the overhead wire into the vehicle; DC-DC converter: used to reduce the voltage of the current on the contact network and convert DC1500V-0, DC+750V--750V or AC2000V into the voltage required by the vehicle's internal equipment; Inverter: used to convert DC power into AC power, or reconvert AC power into a voltage level suitable for vehicle use; Permanent magnet synchronous AC motor: used to receive the AC provided by the inverter as the power source of the vehicle; Control device: establishes electrical connection with high-voltage transmission line, charging rectifier station, contact network, pantograph, DC-DC converter, inverter and permanent magnet synchronous AC motor, and is used to send control commands to high-voltage transmission line, charging rectifier station, contact network, pantograph, DC-DC converter, inverter and permanent magnet synchronous AC motor; The control command includes high-voltage transmission lines transmitting AC power to charging rectifier stations, which convert it into DC or AC power of a specific voltage level and transmit it to the contact network. The contact network contacts the pantograph and introduces the electric energy into the vehicle. Inside the vehicle, the electric energy is stepped down by a DC-DC converter and converted into a voltage that meets the voltage requirements of the vehicle's internal equipment. The inverter converts the electric energy into an AC form suitable for the vehicle to drive the permanent magnet synchronous AC motor vehicle equipment to operate.

[0030] In the technical solution of the invention, the overhead line is designed to support three different power supply modes to adapt to different power supply environments and vehicle requirements. The following are embodiments of these three power supply modes in the technical solution of the invention: DC1500V-0 power supply standard implementation example: The overhead catenary adopts a 1500V DC overhead positive power supply mode. The 10KV / 35KV AC power transmitted by the high-voltage transmission line is converted into 1500V DC power in the charging rectifier station and then transmitted to the overhead catenary. The pantograph contacts the overhead catenary and introduces the electric energy into the vehicle. Inside the vehicle, the electric energy is first reduced in voltage by a DC-DC converter to meet the voltage requirements of the vehicle's internal equipment. The inverter converts the DC power into an AC power form suitable for the vehicle, and finally drives the permanent magnet synchronous AC motor to operate.

[0031] DC±750V power supply standard implementation example: Although the present invention mainly describes the DC1500V power supply standard, the design of the multi-standard compatible unit allows the system to support other DC power supply standards such as DC±750V. When the external power supply is DC±750V, the multi-standard compatible unit will automatically identify and perform necessary voltage conversion. The conversion process includes adjusting the DC±750V electrical energy to a unified DC1500V or other voltage level suitable for vehicle equipment within the system, and then transmitting it to the contact network, and then introducing it into the vehicle through the pantograph for use.

[0032] AC2000V power supply standard implementation example: For the AC2000V AC power supply standard, the external AC power source first enters the charging rectifier station, at which time the AC power can be directly transmitted to the multi-standard compatible unit with or without rectification. If voltage or frequency adjustment is required, the multi-standard compatible unit will start the conversion process to convert the AC2000V electric energy into a voltage level suitable for vehicle use, such as DC1500V or other DC voltages, or directly convert it into an AC voltage level suitable for vehicle equipment. The converted electric energy is transmitted to the vehicle through the contact network, and the pantograph contacts the contact network and introduces the electric energy into the vehicle. Inside the vehicle, the inverter does not need to work (if it is already an AC voltage suitable for the vehicle), or the AC power is converted to the specific voltage and frequency required by the vehicle's internal equipment.

[0033] The support of the three power supply modes of the present invention enables the mobile charging smart rail highway power supply system provided by the present invention to have higher flexibility and adaptability.

[0034] High-voltage transmission line: It is a line used to transmit high-voltage alternating current (10KV / 35KV), responsible for transmitting electricity from power plants or substations to charging rectifiers.

[0035] Charging rectifier: Responsible for receiving the AC power transmitted by the high-voltage transmission line and converting it into DC or AC power of a specific voltage level. This conversion is necessary because different electrical equipment requires different forms and voltage levels of electrical energy to operate normally.

[0036] The overhead catenary is a special power supply network in the form of a 1500V DC overhead positive pole. It serves as a transmission medium for electrical energy (whether DC or AC) and supplies electrical energy to dual-source heavy trucks by contacting the pantograph on the vehicle.

[0037] Pantograph: A device installed on dual-source heavy trucks, whose main function is to maintain contact with the contact network, thereby introducing the electrical energy on the contact network into the vehicle.

[0038] DC-DC converter: The device is used to reduce the voltage of the direct current introduced by the contact network to increase the power to meet the voltage requirements of the vehicle's internal equipment. This is because the electrical equipment inside the vehicle cannot directly withstand the high voltage on the contact network.

[0039] Inverter: The inverter plays an important role in the power supply system. It can convert direct current into alternating current, or reconvert alternating current into a voltage level suitable for vehicle use. This flexibility enables the power supply system to adapt to the diverse needs of different electrical equipment.

[0040] Permanent magnet synchronous AC motor: The power source of dual-source heavy-duty trucks. The permanent magnet synchronous AC motor receives the AC power provided by the inverter and converts it into mechanical energy, thereby driving the dual-source heavy-duty trucks to operate. Dual-source heavy-duty trucks refer to heavy-duty trucks that use dual energy supplies from the power grid and batteries. It combines high-voltage power supply with new energy vehicle technology. The dual power on the dual-source heavy-duty trucks is called a pantograph. When the heavy-duty truck is traveling on an electrified road, the pantograph obtains electricity from the power grid to drive the vehicle and charge the on-board power battery. When the vehicle overtakes or leaves the electrified road, the pantograph automatically lowers and switches to the on-board power battery for driving. The "mobile charging" and "charging and using synchronously" methods provided by the technical solution of the present invention effectively solve the two major technical problems of "endurance" and "charging" of electric heavy-duty trucks, and improve the transportation efficiency of dual-source heavy-duty trucks.

[0041] Control device: Establishing electrical connection with all other parts of the power supply system (including high-voltage transmission lines, charging rectifiers, catenary, pantographs, DC-DC converters, inverters and permanent magnet synchronous AC motors), the control device is responsible for sending control commands to components to improve the coordination, efficiency and safety of the entire power supply system.

[0042] To sum up, the technical solution of the present invention provides a highly integrated and coordinated mobile charging smart rail highway power supply system. From high-voltage transmission to vehicle power output, each link has been designed and optimized to improve the stable supply of electric energy in the mobile charging smart rail highway power supply system and the efficient operation of dual-source heavy trucks.

[0043] Specifically, the mobile charging smart rail highway power supply system provided by the present invention, the control device includes: an intelligent power supply management unit, a multi-standard compatible unit and a contact network power supply unit; The intelligent power management unit sends instructions to the multi-standard compatible unit to identify the standard of the current external power supply and adjust the power conversion strategy according to the identification result; The multi-standard compatible unit feeds back the converted power status information to the intelligent power supply management unit, and at the same time provides the overhead power supply unit with power that meets the internal standards of the system; The contact network power supply unit receives electric energy from the multi-standard compatible unit and transmits it to the vehicle, while reporting the contact status and power transmission status to the intelligent power supply management unit.

[0044] Specifically, in the mobile charging smart rail highway power supply system provided by the present invention, the intelligent power supply management unit is also used for: Collect real-time data from the high-voltage transmission lines, charging rectifiers, and contact networks of the power supply system. The real-time data includes voltage, current, power factor, and temperature parameters; Pre-process the collected real-time data and integrate the processed data to form a data set for analysis; Use data analysis algorithms to conduct in-depth analysis of the integrated data set, and identify the efficiency of system operation by comparing historical data with preset standards. The efficiency of system operation includes power transmission efficiency and equipment utilization; Use the preset fault prediction algorithm to predict the future state of the power supply system, and evaluate the probability of failure and the scope of impact based on historical fault data and current system operation status; When the analysis results show that there is a potential failure risk or an impending failure is predicted, the intelligent power supply management unit triggers the early warning mechanism of the early warning unit of the background management system; The early warning unit of the background management system establishes a connection with the intelligent power supply management unit. The early warning unit of the background management system collects the system operation status data of the intelligent power supply management unit in real time. The system operation status data of the intelligent power supply management unit includes voltage, current, power factor, temperature parameters and abnormal status data; According to historical data, industry standards and system requirements, set warning thresholds, including voltage fluctuation range, current overload threshold and temperature upper limit; Real-time monitoring of system operation status data, comparing the monitoring system operation status data with the warning threshold, and evaluating whether the system is in a normal or warning state; When the operating status data of the monitoring system exceeds the warning threshold, the warning unit of the background management system automatically triggers the warning mechanism and generates warning information.

[0045] As the core of the control device, the intelligent power supply management unit is responsible for comprehensively monitoring and managing the operation of the power supply system. It has the ability to send instructions to the multi-standard compatible unit to identify the standard of the current external power supply. This recognition function is crucial to improving the system's ability to adapt to different power supply environments. Based on the recognition results, the intelligent power supply management unit will adjust the power conversion strategy to improve the transmission of power to the vehicle in the most efficient and safest way. In addition, it also receives status information from the multi-standard compatible unit and the contact network power supply unit, thereby realizing real-time monitoring of the status of the entire power supply system.

[0046] Specifically, in the mobile charging smart rail highway power supply system provided by the present invention, the multi-standard compatible unit is also used for: Monitor the external power supply connected to the power supply system, identify whether it is direct current or alternating current, and determine the specific frequency of the alternating current; Compare the identified external power supply type with the standard type inside the power supply system; Determine whether the external power supply format is compatible with the internal equipment of the power supply system, and whether format conversion is required; If it is determined that the external power supply standard is incompatible with the internal power supply system, the multi-standard compatible unit will prepare for power conversion; Start the power conversion process to convert the power from the external power source into a form of power that is uniformly used within the power supply system; For direct current, it includes adjustment of voltage level; for alternating current, it includes frequency conversion and voltage adjustment.

[0047] The multi-standard compatibility unit is a key part of the control device to achieve power supply compatibility. It receives instructions from the intelligent power supply management unit, identifies and adapts to different external power supply standards, such as AC or DC, and different voltage levels. When the power supply standard is identified, the multi-standard compatibility unit will perform necessary power conversion to improve the power to meet the standards within the system. The converted power status information will be fed back to the intelligent power supply management unit. At the same time, the multi-standard compatibility unit is also responsible for providing standard power to the contact network power supply unit.

[0048] Specifically, in the mobile charging smart rail highway power supply system provided by the present invention, the contact network power supply unit is also used for: The sensors installed on the contact network and the pantograph are used to monitor the contact status between the contact network and the pantograph in real time. Monitoring parameters include contact pressure, wear of the contact surface, and temperature changes of the contact wire; According to the contact status monitored in real time, the transmission process of electric energy from the contact network to the vehicle is controlled. According to the actual needs of the vehicle, which include acceleration, deceleration and constant speed driving, the transmission power is dynamically adjusted: Continuously monitor the operating status of the contact network and pantograph, as well as abnormal conditions during power transmission. Through data analysis and comparison, detect potential fault points including contact network breakage and excessive pantograph wear.

[0049] The overhead line power supply unit is a bridge connecting the power supply system and the vehicle, responsible for transmitting electric energy to the vehicle safely and efficiently. It receives electric energy from the multi-standard compatible unit and transmits it to the vehicle through the overhead line. At the same time, it also monitors the contact status between the overhead line and the vehicle pantograph to improve the stability and reliability of power transmission. The overhead line power supply unit also reports the contact status and power transmission status to the intelligent power supply management unit for real-time adjustment and optimization.

[0050] In a second aspect, the present invention provides a mobile charging smart rail highway power supply method, which is applied to the mobile charging smart rail highway power supply system, comprising: Step S101: The high-voltage transmission line is responsible for transmitting 10KV / 35KV AC power to the charging rectifier station, where the AC power is converted into DC power or AC power of a specific voltage level; Step S102: The converted electric energy is transmitted to the overhead contact network. The overhead contact network serves as a transmission medium for electric energy. The electric energy is introduced into the vehicle through contact with the pantograph. The overhead contact network includes DC1500V-0, DC+750V--750V and AC2000V. Step S103: Inside the vehicle, the DC1500V-0, DC+750V--750V and AC2000V currents are stepped down by the DC-DC converter to be converted into voltages that meet the requirements of the internal equipment of the vehicle, and the inverter converts the DC power into an AC power form suitable for the vehicle; Step S104: the AC power converted by the inverter is used to drive the permanent magnet synchronous AC motor, which serves as a power source for the vehicle to drive the vehicle equipment to operate; Step S105: The control device establishes electrical connection with the high-voltage transmission line, charging rectifier station, contact network, pantograph, DC-DC converter, inverter and permanent magnet synchronous AC motor, and the control device is responsible for sending control commands to the high-voltage transmission line, charging rectifier station, contact network, pantograph, DC-DC converter, inverter and permanent magnet synchronous AC motor.

[0051] Specifically, the mobile charging smart rail highway power supply method provided by the present invention, step S105 includes: Step S501, the intelligent power supply management unit sends an instruction to the multi-standard compatible unit to identify the standard of the current external power supply and adjust the power conversion strategy according to the identification result; Step S502, the multi-standard compatible unit feeds back the converted power state information to the intelligent power supply management unit, and at the same time provides the overhead power supply unit with power that meets the internal standards of the system; Step S503, the contact network power supply unit receives electric energy from the multi-standard compatible unit and transmits it to the vehicle, and reports the contact status and power transmission status to the intelligent power supply management unit.

[0052] Specifically, the mobile charging smart rail highway power supply method provided by the present invention, step S501 includes: Collect real-time data from the high-voltage transmission lines, charging rectifiers, and contact networks of the power supply system. The real-time data includes voltage, current, power factor, and temperature parameters; Pre-process the collected real-time data and integrate the processed data to form a data set for analysis; Use data analysis algorithms to conduct in-depth analysis of the integrated data set, and identify the efficiency of system operation by comparing historical data with preset standards. The efficiency of system operation includes power transmission efficiency and equipment utilization; Use the preset fault prediction algorithm to predict the future state of the power supply system, and evaluate the probability of failure and the scope of impact based on historical fault data and current system operation status; When the analysis results show the existence of potential failure risk or predict an imminent failure, the intelligent power supply management unit triggers the early warning mechanism.

[0053] Early warnings include sound and light alarms, text message notifications, and email notifications.

[0054] Specifically, the mobile charging smart rail highway power supply method provided by the present invention, step S502 includes: Monitor the external power supply connected to the power supply system, identify whether it is direct current or alternating current, and determine the specific frequency of the alternating current; Compare the identified external power supply type with the standard type inside the power supply system; Determine whether the external power supply format is compatible with the internal equipment of the power supply system, and whether format conversion is required; If it is determined that the external power supply standard is incompatible with the internal power supply system, the multi-standard compatible unit will prepare for power conversion; Start the power conversion process to convert the power from the external power source into a form of power that is uniformly used within the power supply system; For direct current, it includes adjustment of voltage level; for alternating current, it includes frequency conversion and voltage adjustment.

[0055] Specifically, the mobile charging smart rail highway power supply method provided by the present invention, step S503 includes: The sensors installed on the contact network and the pantograph are used to monitor the contact status between the contact network and the pantograph in real time. Monitoring parameters include contact pressure, contact surface wear, and contact wire temperature changes; According to the contact status monitored in real time, the transmission process of electric energy from the contact network to the vehicle is controlled. According to the actual needs of the vehicle, which include acceleration, deceleration and constant speed driving, the transmission power is dynamically adjusted: Continuously monitor the operating status of the contact network and pantograph, as well as abnormal conditions during power transmission, and detect potential fault points through data analysis and comparison. Potential fault points include contact network breakage and excessive pantograph wear.

[0056] The present invention effectively solves multiple technical pain points of the existing mobile charging intelligent rail highway power supply system through its technical solution, which is mainly reflected in the following aspects: In the prior art, a single power supply mode is difficult to take into account both cost-effectiveness and operational safety. The present invention realizes automatic identification and conversion of external power supply modes through a multi-mode compatible unit, thereby improving the flexibility and adaptability of the system.

[0057] The intelligent power supply management unit collects data from various parts of the system (such as high-voltage transmission lines, charging rectifier stations, contact networks, etc.) in real time, and uses data analysis algorithms and fault prediction algorithms to optimize system operation and improve power transmission efficiency and equipment utilization.

[0058] The intelligent power supply management unit can monitor the real-time operating status of the system, predict potential fault risks through data analysis, and promptly trigger early warning mechanisms, such as sound and light alarms, SMS notifications, and email notifications, effectively reducing the occurrence of faults and shortening fault response time. The overhead power supply unit uses sensors to monitor the contact status between the overhead power line and the pantograph in real time, and dynamically adjusts the transmission power according to the actual needs of the vehicle (such as acceleration, deceleration, and constant speed driving), thereby improving the stability and efficiency of power transmission.

[0059] The combination of the inverter and the DC-DC converter enables the system to flexibly convert electrical energy into a voltage and current form suitable for the internal equipment of the vehicle, improving the versatility and compatibility of the system. Through intelligent monitoring and management, the present invention not only improves the operating efficiency of the system, but also reduces the maintenance cost of the system and improves the overall user experience.

[0060] To sum up, the present invention effectively solves the pain points of the existing mobile charging smart rail highway power supply system in terms of cost-effectiveness, operational safety, flexibility and reliability through technological innovation and intelligent management, and provides strong support for the further development and application of the mobile charging smart rail highway power supply system.

[0061] In the technical solution of the present invention, the overhead contact network, as a key part of power transmission, is designed to adapt to different power supply systems to meet the needs of different mobile charging smart rail highway systems. The three overhead contact network power supply systems: DC1500V, DC±750V, AC2000V, are specifically used in the present invention as follows: DC1500V power supply system: In the present invention, the overhead contact network is mainly designed as a DC1500V overhead positive power supply mode, which is consistent with the DC1500V power supply system you mentioned. This high-voltage DC power supply mode can provide a larger power transmission capacity and meet the needs of high-power dual-source heavy trucks.

[0062] After the DC1500V electric energy is transmitted to the vehicle through the overhead line, it is firstly stepped down by the DC-DC converter inside the vehicle to meet the voltage requirements of different devices inside the vehicle. Although the present invention is designed for DC1500V power supply, through the multi-standard compatible unit, the system can automatically identify and convert the external power supply standard to achieve compatibility with the DC1500V overhead line power supply standard.

[0063] DC±750V power supply standard: Although the present invention mainly describes the DC1500V power supply standard, the design of the multi-standard compatible unit allows the system to support other DC power supply standards such as DC±750V. When the external power supply is DC±750V, the multi-standard compatible unit will make necessary voltage adjustments or conversions so that the overhead line can output standard DC1500V power.

[0064] Conversion mechanism: The multi-standard compatible unit starts the power conversion process by identifying the voltage level of the external power supply, converting the DC±750V power into a unified DC1500V power form within the system.

[0065] AC2000V power supply standard: The system is also compatible with AC2000V power supply standards. Through the recognition and conversion function of the multi-standard compatible unit, the external AC power supply (such as AC2000V) can be converted into the DC power (such as DC1500V) required by the system, or directly converted into the AC voltage level suitable for vehicle use.

[0066] First, the AC power needs to be converted into DC power in the charging rectifier, and then further adjusted to the voltage level required by the overhead contact network (such as DC1500V) through a multi-standard compatible unit. Alternatively, it can be directly converted into an AC voltage level suitable for vehicle equipment and supplied to the permanent magnet synchronous AC motor through an inverter.

[0067] During the entire conversion and transmission process, the control device, intelligent power supply management unit, multi-standard compatible unit and contact network power supply unit work closely together to ensure stable and efficient transmission of electric energy.

[0068] To sum up, the mobile charging smart rail highway power supply system of the present invention realizes wide support for different contact network power supply standards, including DC1500V, DC±750V and AC2000V, etc. through the design of multi-standard compatible units, thereby improving the flexibility and adaptability of the system.

[0069] From the perspective of economy, technology and technical effect, a comprehensive comparison is made on the three power supply systems of DC1500V, DC±750V and AC2000V. The specific comparison contents are as follows: Compare the three power supply systems of DC1500V, DC±750V and AC2000V from an economic perspective; The advantages of the DC1500V power supply standard from an economic perspective: DC1500V has a higher voltage level, which can reduce power loss during transmission, thereby improving transmission efficiency. The DC1500V power supply standard is widely used and has a high degree of standardization, which is conducive to reducing equipment procurement and maintenance costs.

[0070] Economic disadvantages of the DC1500V power supply standard: For some systems, a large initial investment is required to upgrade or replace existing equipment to support DC1500V power supply.

[0071] The economic advantages of the DC±750V power supply standard: For systems that already use DC750V, the upgrade cost is relatively low, and only simple voltage adjustments are required. It is suitable for occasions where the demand for electricity is not particularly high, and it is more economical.

[0072] The economic disadvantage of the DC±750V power supply standard is that due to the relatively low voltage level, the power loss during transmission is large and it is not suitable for tram systems with high power requirements.

[0073] The economic advantages of AC2000V power supply system: AC power has a wide range of applications and is compatible with other power systems. Many electrical equipment can directly use AC power, reducing the investment in conversion equipment.

[0074] The economic disadvantages of the AC2000V power supply system: In some cases, AC power needs to be converted to DC power for vehicle use, which increases the cost of conversion equipment and maintenance. When transmitting over long distances, the transmission loss of AC power is greater than that of DC power.

[0075] Compare the three power supply systems of DC1500V, DC±750V and AC2000V from a technical perspective; Technical advantages of DC1500V power supply system: It is suitable for high-power and long-distance tram systems. It has been used in the tram field for many years and the technology is mature and reliable.

[0076] Technical disadvantages of the DC1500V power supply standard: The high voltage level has high requirements for insulation materials, which increases equipment costs.

[0077] DC±750V power supply standard technical advantages: low voltage level: relatively low insulation requirements and low equipment cost. The system is relatively simple and easy to maintain and troubleshoot.

[0078] Technical disadvantages of the DC±750V power supply standard: limited transmission capacity, not suitable for occasions requiring high-power transmission.

[0079] Technical advantages of AC2000V power supply standard: Wide compatibility with a variety of electrical equipment and systems, and the voltage and frequency can be flexibly adjusted through transformers and other equipment.

[0080] Technical disadvantages of the AC2000V power supply standard: The conversion is complex. When direct current is required, additional rectification equipment is required, which increases the complexity of the system.

[0081] Compare the three power supply systems of DC1500V, DC±750V and AC2000V from the perspective of technical effects; The advantages of the DC1500V power supply standard from the perspective of technical effects: it can provide a stable and reliable power supply to meet the needs of high-power tram systems. It is beneficial to energy conservation and emission reduction by reducing power loss during transmission.

[0082] Disadvantages of the DC1500V power supply standard from the perspective of technical effects: The high voltage level has high requirements for equipment, which increases equipment costs.

[0083] Advantages of the DC±750V power supply standard from the perspective of technical effects: In low-power, short-distance tram systems, it is economical and efficient, with a simple system and low maintenance costs.

[0084] Disadvantages of the DC±750V power supply standard from the perspective of technical effects: Performance is limited in situations where high power and long-distance transmission are required.

[0085] Advantages of the AC2000V power supply standard from the perspective of technical effects: It is suitable for a variety of power needs and application scenarios, flexible and diverse, and easy to upgrade and transform the system as technology develops.

[0086] Disadvantages of the AC2000V power supply standard from the perspective of technical effects: In situations where DC power is required, the conversion efficiency is lower than that of the DC power supply system.

[0087] The current of the technical solution of the present invention goes from the power plant to the overhead line, and then to the special vehicle that needs to be charged in the present invention. The entire power supply process involves multiple key steps. The power supply conversion steps of the three power supply systems (DC1500V-0, DC±750V, AC2000V) of the overhead line are as follows: The high-voltage AC power (usually 10KV / 35KV) generated by the power plant is transmitted to the charging rectifier station through high-voltage transmission lines.

[0088] In the charging rectifier station, AC power is converted into DC power of a specific voltage level (such as DC1500V) or directly into AC power of a specific voltage level through a rectifier. During this process, the charging rectifier station will monitor and adjust the output voltage and current to ensure that the power quality meets the subsequent power supply requirements.

[0089] The power supply system conversion of the overhead contact network. According to the three power supply systems of the overhead contact network (DC1500V-0, DC±750V, AC2000V), the electric energy needs to be converted accordingly to match different needs.

[0090] DC1500V-0 power supply system, if the external power supply has been converted to DC1500V, it will be directly transmitted to the vehicle through the contact network without additional conversion. During the transmission process, the system will monitor the power quality and contact network status to achieve safe and stable power supply.

[0091] DC±750V power supply standard, when the external power supply is DC±750V, the multi-standard compatible unit first identifies the power supply standard. Then, the multi-standard compatible unit starts the power conversion process, converting the DC±750V power to DC1500V or other voltage levels uniformly used within the system, and the converted power is transmitted to the vehicle through the contact network.

[0092] AC2000V power supply standard, if the external power supply is AC2000V, it first enters the charging rectifier for preliminary processing (including filtering, voltage stabilization, etc.). After the multi-standard compatible unit recognizes that the power supply is AC, it determines whether further voltage or frequency conversion is required according to system requirements. If DC power supply is required, the AC2000V is converted to DC1500V or other DC voltage levels through a rectifier. If a specific AC voltage is required, the voltage or frequency is adjusted through a transformer and other equipment. The converted electric energy is transmitted to the vehicle through the contact network. If it is already an AC voltage suitable for the vehicle, there is no need for inverter conversion and power is supplied directly.

[0093] The power processing inside the vehicle, the pantograph on the vehicle contacts the overhead line, and the power is introduced into the vehicle. The introduced power (whether it is DC1500V, DC±750V after conversion or AC2000V direct power supply) is firstly stepped down by the DC-DC converter to meet the voltage requirements of the internal equipment of the vehicle.

[0094] Inverter conversion. For devices that require AC power, the inverter converts DC power into an AC form suitable for vehicle use. The electrical energy drives the permanent magnet synchronous AC motor to provide power for the vehicle.

[0095] The intelligent power supply management unit collects data from high-voltage transmission lines, charging rectifier stations, contact networks, etc. in real time, performs preprocessing and analysis, and evaluates the system operation efficiency. It uses data analysis algorithms and fault prediction algorithms to predict potential fault risks and trigger early warning mechanisms (such as sound and light alarms, SMS notifications, and email notifications) in a timely manner. It dynamically adjusts the power transmission power according to the vehicle driving status (acceleration, deceleration, constant speed) and contact network status to improve power supply stability and efficiency.

[0096] Through the above steps, the present invention realizes the complete power supply process from the power plant to the overhead line and then to the special vehicle, and flexibly supports multiple power supply modes, thereby improving the flexibility, safety and efficiency of the power supply system.

[0097] In the technical solution of the present invention, the overhead line is designed to support three different power supply modes: DC1500V-0, DC±750V and AC2000V, to adapt to different power supply environments and vehicle requirements. The following are the specific usage details of these three power supply modes in the technical solution, and the steps of current conversion are explained in detail in combination with power supply knowledge: DC1500V-0 power supply standard: High-voltage AC power input: The high-voltage AC power (usually 10KV / 35KV) generated by the power plant is transmitted to the charging rectifier station through high-voltage transmission lines.

[0098] AC rectification: In the charging rectifier, AC is converted into DC with a specific voltage level, i.e. DC1500V, by a rectifier. During the rectification process, the rectifier will adjust the output voltage and current according to system requirements so that the power quality meets the subsequent power supply requirements.

[0099] Power quality monitoring: Before the electric energy is transmitted to the overhead line, the system will conduct strict power quality monitoring, including voltage stability, current balance, harmonic content, etc., to ensure that the power quality meets the standards.

[0100] Overhead transmission: The DC1500V DC power that has passed the monitoring is transmitted to the overhead line. As the medium for power transmission, the overhead line transmits the power to the pantograph on the vehicle.

[0101] Internal power processing of the vehicle: The pantograph on the vehicle contacts the overhead line to introduce power into the vehicle. The introduced DC1500V power is firstly reduced in voltage by the DC-DC converter to meet the voltage requirements of different devices inside the vehicle. The reduced power can be directly supplied to DC devices, or converted to AC power by the inverter to supply AC devices.

[0102] DC±750V power supply standard: External power supply access: When the external power supply is DC±750V, the multi-standard compatible unit first identifies the power supply standard.

[0103] Power conversion: Since DC±750V does not match the DC1500V voltage level used uniformly within the system, the multi-standard compatible unit will start the power conversion process. The DC±750V power is converted to DC1500V or other voltage levels uniformly used within the system through a voltage converter (such as a boost converter).

[0104] Subsequent steps: The converted DC1500V electric energy is transmitted and used according to the subsequent steps of the DC1500V power supply system (contact network transmission, vehicle internal power processing, etc.).

[0105] AC2000V power supply standard: External AC power supply access: When the external power supply is AC2000V, the AC power first enters the charging rectifier for preliminary processing, including filtering, voltage stabilization and other measures to improve the power quality.

[0106] If DC power supply is required: After the multi-standard compatible unit recognizes that the external power supply is AC power, it will determine whether the system needs DC power supply. If necessary, the AC2000V AC power is converted to DC1500V or other DC voltage levels suitable for internal use of the system through a rectifier. The converted DC power is transmitted and used in the subsequent steps of the DC1500V power supply standard.

[0107] If a specific AC power supply is required: If the system requires AC power of a specific voltage level, the voltage or frequency is adjusted to a level suitable for the vehicle through a transformer or other equipment. The adjusted AC power is transmitted to the vehicle through the overhead line and can be directly supplied to the AC equipment without the need for inverter conversion. Before the power is transmitted to the overhead line, the system will monitor the power quality. The qualified power is transmitted to the overhead line and introduced into the vehicle through the pantograph.

[0108] If the internal equipment of the vehicle requires AC power, the introduced AC power can be directly supplied to the AC equipment for use. If DC power is required, the AC power can be converted into DC power through an inverter and supplied to the DC equipment for use.

[0109] Through the above detailed steps, the technical solution of the present invention can flexibly support three power supply systems: DC1500V-0, DC±750V and AC2000V.

[0110] In the technical solution of the present invention, the overhead line supports three different power supply modes: DC1500V-0, DC±750V and AC2000V. The following is a detailed description of the conversion process of these three power supply modes: DC1500V-0 power supply system conversion process; Input voltage processing: High-voltage AC power (usually 10KV / 35KV) is generated from the power plant and transmitted to the charging rectifier station through high-voltage transmission lines. In the charging rectifier station, the AC power is stepped down by a transformer to a voltage range suitable for the rectifier, and then input into the rectifier.

[0111] Rectification process: The rectifier converts the stepped-down AC power into DC power, usually rectified to DC1500V, because this voltage level is more common and stable in the tram power supply system. During the rectification process, the rectifier will control the stability of the output voltage and current to improve the power quality.

[0112] Power quality monitoring: The converted DC1500V electric energy passes through the power quality monitoring device to check indicators such as voltage stability, current balance and harmonic content to ensure that the power quality meets the standards.

[0113] Transmission to the overhead line: The DC1500V electric energy that has passed the monitoring is transmitted to the overhead line through the cable to provide power for the vehicle.

[0114] Vehicle internal processing: The pantograph on the vehicle contacts the overhead line and introduces the electric energy into the vehicle. Inside the vehicle, the DC1500V electric energy is first stepped down by the DC-DC converter to meet the voltage requirements of different equipment. If necessary, the DC power can also be converted into AC power through an inverter and supplied to AC equipment.

[0115] DC±750V power supply standard conversion process Identify external power supply: The multi-standard compatible unit identifies the connected external power supply as DC±750V.

[0116] Voltage conversion: Since the voltage level used uniformly within the system is DC1500V, the multi-standard compatible unit needs to start the voltage conversion process. Use a boost converter to boost the DC±750V power to DC1500V or other uniform voltage levels used within the system.

[0117] Power quality monitoring: The converted electric energy passes through the power quality monitoring device to improve the stability of voltage and current, harmonic content and other indicators to meet the requirements.

[0118] Transmission to the overhead line: The qualified electric energy is transmitted to the overhead line through the cable to power the vehicle and is processed inside the vehicle (the same as the DC1500V power supply standard).

[0119] AC2000V power supply conversion process Preliminary processing: After the external AC2000V AC power supply is connected to the system, it first enters the charging rectifier for preliminary processing, including filtering, voltage stabilization, etc., to improve the power quality.

[0120] Standard judgment and conversion: Conversion to DC: If the system requires DC power supply, the multi-standard compatible unit recognizes that the external power supply is AC power, and then converts the AC2000V AC power to DC1500V or other DC voltage levels suitable for internal use in the system through a rectifier. The conversion process is similar to the rectification process of the DC1500V power supply standard.

[0121] Maintain AC power supply: If the system requires AC power of a specific voltage level, the multi-standard compatible unit adjusts the voltage and frequency to a level suitable for vehicle use through a transformer, and then transmits it directly to the overhead line.

[0122] Power quality monitoring: Whether converted to DC or maintained as AC power supply, the converted electric energy must pass through a power quality monitoring device to ensure that the power quality meets the requirements.

[0123] Transmission to the overhead line: The monitored qualified electric energy is transmitted to the overhead line through cables.

[0124] Vehicle internal processing: For DC power supply, the vehicle internal processing is the same as the DC1500V power supply standard. For AC power supply, the pantograph on the vehicle directly introduces AC power into the vehicle. If necessary, the voltage and current can be adjusted through a transformer or inverter to meet the requirements of the vehicle's internal equipment.

[0125] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if the modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include the modifications and variations, and the above-described embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention.

Claims

1. A mobile charging smart rail highway power supply system, characterized in that: include: High-voltage transmission line: used to transmit 10KV / 35KV AC power; Charging rectifier: used to convert the AC power transmitted by high-voltage transmission lines into DC or AC power of a specific voltage level; Contact network: used as a transmission medium for direct current or alternating current, in contact with the pantograph to supply power to vehicles and roads. Contact networks include DC1500V-0, DC+750V--750V and AC2000V; Pantograph: installed on the vehicle and in contact with the overhead wire, it introduces the electric energy on the overhead wire into the vehicle; DC-DC converter: used to reduce the voltage of the current on the contact network and convert DC1500V-0, DC+750V--750V or AC2000V into the voltage required by the vehicle's internal equipment; Inverter: used to convert DC power into AC power, or reconvert AC power into a voltage level suitable for vehicle use; Permanent magnet synchronous AC motor: used to receive the AC provided by the inverter as the power source of the vehicle; Control device: establishes electrical connection with high-voltage transmission line, charging rectifier station, contact network, pantograph, DC-DC converter, inverter and permanent magnet synchronous AC motor, and is used to send control commands to high-voltage transmission line, charging rectifier station, contact network, pantograph, DC-DC converter, inverter and permanent magnet synchronous AC motor; The control command includes high-voltage transmission lines transmitting AC power to charging rectifier stations, which convert it into DC or AC power of a specific voltage level and transmit it to the contact network. The contact network contacts the pantograph and introduces the electric energy into the vehicle. Inside the vehicle, the electric energy is stepped down by a DC-DC converter and converted into a voltage that meets the voltage requirements of the vehicle's internal equipment. The inverter converts the electric energy into an AC form suitable for the vehicle to drive the permanent magnet synchronous AC motor vehicle equipment to operate.

2. The mobile charging smart rail highway power supply system according to claim 1, characterized in that: The control device comprises: an intelligent power supply management unit, a multi-standard compatible unit and a contact network power supply unit; The intelligent power management unit sends instructions to the multi-standard compatible unit to identify the standard of the current external power supply and adjust the power conversion strategy according to the identification result; The multi-standard compatible unit feeds back the converted power status information to the intelligent power supply management unit, and at the same time provides the overhead power supply unit with power that meets the internal standards of the system; The contact network power supply unit receives electric energy from the multi-standard compatible unit and transmits it to the vehicle, while reporting the contact status and power transmission status to the intelligent power supply management unit.

3. The mobile charging smart rail highway power supply system according to claim 2, characterized in that: The intelligent power supply management unit is further used for: Collect real-time data from the high-voltage transmission lines, charging rectifiers, and contact networks of the power supply system. The real-time data includes voltage, current, power factor, and temperature parameters; Pre-process the collected real-time data and integrate the processed data to form a data set for analysis; Use data analysis algorithms to conduct in-depth analysis of the integrated data set, and identify the efficiency of system operation by comparing historical data with preset standards. The efficiency of system operation includes power transmission efficiency and equipment utilization; Use the preset fault prediction algorithm to predict the future state of the power supply system, and evaluate the probability of failure and the scope of impact based on historical fault data and current system operation status; When the analysis results show that there is a potential failure risk or an impending failure is predicted, the intelligent power supply management unit triggers the early warning mechanism of the early warning unit of the background management system; The early warning unit of the background management system establishes a connection with the intelligent power supply management unit. The early warning unit of the background management system collects the system operation status data of the intelligent power supply management unit in real time. The system operation status data of the intelligent power supply management unit includes voltage, current, power factor, temperature parameters and abnormal status data; Set warning thresholds based on historical data, industry standards, and system requirements. The warning thresholds include voltage fluctuation range, current overload threshold, and temperature upper limit. Real-time monitoring of system operation status data, comparing the monitoring system operation status data with the warning threshold, and evaluating whether the system is in a normal or warning state; When the operating status data of the monitoring system exceeds the warning threshold, the warning unit of the background management system automatically triggers the warning mechanism and generates warning information.

4. The mobile charging smart rail highway power supply system according to claim 2, characterized in that: The multi-standard compatible unit is further used for: Monitor the external power supply connected to the power supply system, identify whether it is direct current or alternating current, and determine the specific frequency of the alternating current; Compare the identified external power supply type with the standard type inside the power supply system; Determine whether the external power supply format is compatible with the internal equipment of the power supply system, and whether to perform format conversion; If it is determined that the external power supply standard is incompatible with the internal power supply system, the multi-standard compatible unit will prepare for power conversion; Start the power conversion process to convert the power from the external power source into the form of power used inside the power supply system; For direct current, it includes adjustment of voltage level; for alternating current, it includes frequency conversion and voltage adjustment.

5. The mobile charging smart rail highway power supply system according to claim 2, characterized in that: The contact network power supply unit is also used for: The sensors installed on the contact network and the pantograph are used to monitor the contact status between the contact network and the pantograph in real time. Monitoring parameters include contact pressure, wear of the contact surface, and temperature changes of the contact wire; According to the real-time monitored contact status, the transmission process of electric energy from the contact network to the vehicle is controlled, according to the actual needs of the vehicle, which include acceleration, deceleration, constant speed driving and dynamic adjustment of transmission power: Continuously monitor the operating status of the contact network and pantograph, as well as abnormal conditions during power transmission. Through data analysis and comparison, detect potential fault points including contact network breakage and excessive pantograph wear.

6. A mobile charging smart rail highway power supply method, applied to the mobile charging smart rail highway power supply system according to any one of claims 1 to 5, characterized in that: include: Step S101: The high-voltage transmission line is responsible for transmitting 10KV / 35KV AC power to the charging rectifier station, where the AC power is converted into DC power or AC power of a specific voltage level; Step S102: The converted electric energy is transmitted to the overhead contact network. The overhead contact network serves as a transmission medium for electric energy. The electric energy is introduced into the vehicle through contact with the pantograph. The overhead contact network includes DC1500V-0, DC+750V--750V and AC2000V. Step S103: Inside the vehicle, the DC1500V-0, DC+750V--750V and AC2000V currents are stepped down by the DC-DC converter to be converted into voltages that meet the requirements of the internal equipment of the vehicle, and the inverter converts the DC power into an AC power form suitable for the vehicle; Step S104: the AC power converted by the inverter is used to drive the permanent magnet synchronous AC motor, which serves as a power source for the vehicle to drive the vehicle equipment to operate; Step S105: The control device establishes electrical connection with the high-voltage transmission line, charging rectifier station, contact network, pantograph, DC-DC converter, inverter and permanent magnet synchronous AC motor, and the control device is responsible for sending control commands to the high-voltage transmission line, charging rectifier station, contact network, pantograph, DC-DC converter, inverter and permanent magnet synchronous AC motor.

7. The mobile charging smart rail highway power supply method according to claim 6, characterized in that: The step S105 includes: Step S501, the intelligent power supply management unit sends an instruction to the multi-standard compatible unit to identify the standard of the current external power supply and adjust the power conversion strategy according to the identification result; Step S502, the multi-standard compatible unit feeds back the converted power state information to the intelligent power supply management unit, and at the same time provides the overhead power supply unit with power that meets the internal standards of the system; Step S503, the contact network power supply unit receives electric energy from the multi-standard compatible unit and transmits it to the vehicle, and reports the contact status and power transmission status to the intelligent power supply management unit.

8. The mobile charging smart rail highway power supply method according to claim 7, characterized in that: The step S501 includes: Collect real-time data from the high-voltage transmission lines, charging rectifiers, and contact networks of the power supply system. The real-time data includes voltage, current, power factor, and temperature parameters; Pre-process the collected real-time data and integrate the processed data to form a data set for analysis; Use data analysis algorithms to conduct in-depth analysis of the integrated data set, and identify the efficiency of system operation by comparing historical data with preset standards. The efficiency of system operation includes power transmission efficiency and equipment utilization; Use the preset fault prediction algorithm to predict the future state of the power supply system, and evaluate the probability of failure and the scope of impact based on historical fault data and current system operation status; When the analysis results show that there is a potential failure risk or an impending failure is predicted, the intelligent power supply management unit triggers the early warning mechanism of the early warning unit of the background management system; The early warning unit of the background management system establishes a connection with the intelligent power supply management unit. The early warning unit of the background management system collects the system operation status data of the intelligent power supply management unit in real time. The system operation status data of the intelligent power supply management unit includes voltage, current, power factor, temperature parameters and abnormal status data; Set warning thresholds based on historical data, industry standards, and system requirements. The warning thresholds include voltage fluctuation range, current overload threshold, and temperature upper limit. Real-time monitoring of system operation status data, comparing the monitoring system operation status data with the warning threshold, and evaluating whether the system is in a normal or warning state; When the operating status data of the monitoring system exceeds the warning threshold, the warning unit of the background management system automatically triggers the warning mechanism and generates warning information.

9. The mobile charging smart rail highway power supply method according to claim 7, characterized in that: The step S502 includes: Monitor the external power supply connected to the power supply system, identify whether it is direct current or alternating current, and determine the specific frequency of the alternating current; Compare the identified external power supply type with the standard type inside the power supply system; Determine whether the external power supply format is compatible with the internal equipment of the power supply system, and whether to perform format conversion; If it is determined that the external power supply standard is incompatible with the internal power supply system, the multi-standard compatible unit will prepare for power conversion; Start the power conversion process to convert the power from the external power source into the form of power used inside the power supply system; For direct current, it includes adjustment of voltage level; for alternating current, it includes frequency conversion and voltage adjustment.

10. The mobile charging smart rail highway power supply method according to claim 7, characterized in that: The step S503 includes: The sensors installed on the contact network and the pantograph are used to monitor the contact status between the contact network and the pantograph in real time. Monitoring parameters include contact pressure, wear of the contact surface, and temperature changes of the contact wire; According to the contact status monitored in real time, the transmission process of electric energy from the contact network to the vehicle is controlled. According to the actual needs of the vehicle, which include acceleration, deceleration and constant speed driving, the transmission power is dynamically adjusted: Continuously monitor the operating status of the contact network and pantograph, as well as abnormal conditions during power transmission, and detect potential fault points through data analysis and comparison. Potential fault points include contact network breakage and excessive pantograph wear.

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