High-speed rail station photovoltaic power supply dynamic current intelligent distribution method and system

Abstract

The invention provides a high-speed rail station photovoltaic power supply dynamic current intelligent distribution method and system. The method comprises the steps that S1, the photovoltaic module converts absorbed light energy into direct current; s2, the safety system carries out real-time monitoring and processing in the photoelectric conversion process of the photovoltaic module, and after the photovoltaic module converts light energy into direct current, the direct current is transmitted to the flexible intelligent control system. And S3, the flexible intelligent control system distributes the direct current in multiple directions in real time according to the current time period and the electricity demand of the high-speed rail station equipment. Self-sufficiency of electric energy of the high-speed rail station is achieved, dependence on a power grid is reduced, reliability and safety of electricity utilization of the high-speed rail station can be improved, meanwhile, energy conservation and emission reduction can be achieved, electricity utilization intelligence of the high-speed rail station is achieved, and finally the purpose of the zero-carbon high-speed rail station is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy control in high-speed railway stations, and in particular to a method and system for intelligently distributing dynamic current of photovoltaic power supply in high-speed railway stations. Background Art

[0002] Traditional thermal power generation relies on non-renewable energy and pollutes the environment. Solar power generation, on the other hand, utilizes the photovoltaic effect at semiconductor interfaces to convert light energy into electricity. With technological advancements and cost reductions, it has rapidly developed and boasts broad application prospects. However, existing photovoltaic power generation systems still have several shortcomings, including the inability to generate power during periods of insufficient sunlight or at night, difficulties in effectively managing the charging and discharging process, the inability to detect and address system failures in a timely manner, and a mismatch between power output and actual electricity demand. This results in increased energy consumption due to the frequent conversion between DC and AC power, failing to achieve the goals of energy conservation and emission reduction. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention discloses a method and system for intelligently distributing dynamic current of photovoltaic power supply in high-speed railway stations. The technical solutions adopted are as follows:

[0004] A method for intelligently distributing dynamic current of photovoltaic power supply for high-speed railway stations, the method comprising:

[0005] S1: After the photovoltaic module absorbs light, it converts light energy into direct current;

[0006] S2: The safety system monitors and processes photovoltaic power generation information in real time and transmits the collected DC power to a flexible intelligent control system;

[0007] S3: The flexible intelligent control system distributes DC power in real time and in multiple directions according to historical power consumption.

[0008] Preferably, the S2 includes:

[0009] S21: The data acquisition module obtains the output voltage, output current and solar radiation intensity of the photovoltaic module in real time, and displays these data in real time on the monitoring interface;

[0010] S22: The performance evaluation module analyzes and evaluates the collected solar radiation intensity, output voltage and output current data to calculate the photoelectric conversion efficiency of the photovoltaic module.

[0011] When the photoelectric conversion efficiency reaches a predetermined threshold, the DC switch will turn on, allowing DC power to be transmitted to the flexible intelligent control system;

[0012] When the photoelectric conversion rate does not reach the set threshold, the alarm device will send out a warning signal, turn off the DC switch, and notify relevant personnel to conduct troubleshooting.

[0013] Preferably, the S3 includes:

[0014] S31: The power demand analysis module evaluates the power demand of the high-speed railway station's DC equipment, energy storage equipment, and inverters, and formulates a DC power distribution plan based on the evaluation results;

[0015] S32: According to the distribution plan, the DC power distribution system sends part of the DC power to the DC power-consuming equipment in the high-speed railway station, another part to the energy storage equipment, and the rest to the inverter, which converts it into AC power for use by the AC equipment.

[0016] Preferably, the DC power distribution scheme includes:

[0017] When 6≤t≤18, the PV panels generate high power. After meeting the power needs of the high-speed railway station's DC and AC equipment, the flexible intelligent control system allocates excess DC power to the energy storage device for charging. When 18<t≤22, sunlight gradually weakens, and the PV panels' power generation decreases accordingly. Meanwhile, the DC and AC equipment are at their peak power consumption period. At this time, the flexible intelligent control system reduces the DC power supply to the energy storage device and prioritizes DC power allocation to the DC and AC equipment.

[0018] When 22<t<time 6 of the next day, the photovoltaic panels stop generating electricity due to the absence of sunlight. At this time, the energy storage device will supply the DC power stored during the day to the DC and AC devices. In addition, the flexible intelligent control system will predict the power consumption of the DC and AC devices in the next moment, and then distribute the power according to the DC power distribution factor.

[0019] A high-speed railway station photovoltaic power supply dynamic current intelligent distribution system, the system comprising:

[0020] Photovoltaic modules: Photovoltaic modules absorb sunlight and convert light energy into direct current;

[0021] Safety system: The safety system monitors and processes photovoltaic power generation information in real time and transmits the collected DC power to a flexible intelligent control system;

[0022] Flexible intelligent control system: The flexible intelligent control system distributes DC power in real time and in multiple directions based on historical power consumption;

[0023] In addition, the DC power output terminal of the photovoltaic module is connected to the DC signal input terminal of the safety system, and the DC signal output terminal of the safety system is connected to the DC signal input terminal of the flexible intelligent control system.

[0024] Preferably, the safety system comprises:

[0025] Data acquisition module: The data acquisition module collects the output voltage and output current of the photovoltaic module in real time, and collects the solar radiation intensity, and displays the collected solar radiation intensity data, output voltage and output current data on the monitoring interface in real time;

[0026] Performance evaluation module: The performance evaluation module analyzes and evaluates the collected solar radiation intensity data, output voltage and output current data to obtain the photoelectric conversion rate of the photovoltaic module.

[0027] When the photoelectric conversion efficiency reaches a predetermined threshold, the DC switch will turn on, allowing DC power to be transmitted to the flexible intelligent control system;

[0028] When the photoelectric conversion rate does not reach the set threshold, the alarm device will send out a warning signal, turn off the DC switch, and notify relevant personnel to conduct troubleshooting.

[0029] Preferably, the flexible intelligent control system includes:

[0030] Power demand analysis module: This module analyzes the power demand of the high-speed railway station's DC equipment, energy storage equipment, and inverters, and formulates a DC power distribution plan based on the analysis results.

[0031] DC power distribution system: According to the distribution plan, the DC power distribution system sends part of the DC power to the DC power equipment in the high-speed railway station, another part to the energy storage equipment, and the remaining part to the inverter, which converts it into AC power for use by the AC equipment;

[0032] Furthermore, the power consumption signal output terminal of the power demand analysis module is connected to the distribution signal input terminal of the direct current distribution system.

[0033] Preferably, the No. 1 DC output terminal of the flexible intelligent control system is connected to the No. 1 DC input terminal of the DC device, the No. 2 DC output terminal of the flexible intelligent control system is connected to the DC input terminal of the energy storage device, the No. 3 DC output terminal of the flexible intelligent control system is connected to the No. 1 DC input terminal of the inverter, the AC output terminal of the inverter is connected to the AC input terminal of the AC device, the No. 1 DC output terminal of the energy storage device is connected to the No. 2 DC input terminal of the DC device, and the No. 2 DC output terminal of the energy storage device is connected to the No. 2 DC input terminal of the inverter.

[0034] The beneficial effects of the present invention are: achieving self-sufficiency in electricity for high-speed railway stations, reducing dependence on the power grid, and improving the reliability and safety of electricity use in high-speed railway stations. At the same time, it can save energy and reduce emissions, achieve intelligent electricity use in high-speed railway stations, and ultimately achieve the goal of zero-carbon high-speed railway stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is the intelligent distribution method for dynamic current of photovoltaic power supply in high-speed railway stations described in the present invention. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0037] One embodiment of the present invention provides a method for intelligently distributing dynamic current for photovoltaic power supply in a high-speed railway station, the method comprising:

[0038] S1: Photovoltaic modules convert absorbed light energy into direct current;

[0039] S2: The safety system monitors and processes the photovoltaic modules' photoelectric conversion process in real time. The modules convert light energy into direct current (DC) and transmit this DC power to the flexible intelligent control system. S3: The flexible intelligent control system distributes DC power in multiple directions in real time, based on the current time period and the power requirements of high-speed rail station equipment.

[0040] The working principle and effect of the above technical solution are as follows: Photovoltaic panels on the roof of the high-speed rail system absorb sunlight. These panels convert light energy directly into direct current (DC) electricity through the photoelectric effect. The safety system monitors all aspects of the photovoltaic power generation process in real time, including the panels' power generation efficiency, ambient temperature, and light intensity. It also collects other key system parameters, such as the status of the energy storage device and the real-time power consumption of the high-speed trains. The safety system transmits this collected data to the flexible intelligent control system in real time. The flexible intelligent control system first processes and analyzes the received data, including historical power consumption statistics and trend forecasts. Based on the data analysis results, the system distributes DC power in real time, multi-directionally, according to the current photovoltaic power generation, the remaining capacity of the energy storage device, and the real-time power demand of the high-speed trains. Photovoltaic panels convert light energy into electricity. As a clean, renewable energy source, solar energy helps reduce dependence on traditional fossil fuels, lowers carbon emissions, and aligns with green, low-carbon environmental protection concepts. By monitoring the photovoltaic power generation information and the internal status of the high-speed rail system in real time, the safety system can obtain the latest data, providing a foundation for intelligent distribution. The flexible intelligent control system is based on big data analysis and prediction. It can intelligently distribute DC power in real time and in multiple directions according to historical power consumption, real-time power demand and the status of energy storage equipment, ensuring efficient energy utilization, while reducing losses in the energy conversion process, improving power quality, and enhancing system reliability and safety.

[0041] In one embodiment of the present invention, S2 includes:

[0042] S21: The data acquisition module obtains the output voltage, output current and solar radiation intensity of the photovoltaic module in real time, and displays these data in real time on the monitoring interface;

[0043] S22: The performance evaluation module analyzes and evaluates the collected solar radiation intensity, output voltage and output current data to calculate the photoelectric conversion efficiency of the photovoltaic module.

[0044] When the photoelectric conversion efficiency reaches a predetermined threshold, the DC switch will turn on, allowing DC power to be transmitted to the flexible intelligent control system;

[0045] When the photoelectric conversion rate does not reach the set threshold, the alarm device will send out a warning signal, turn off the DC switch, and notify relevant personnel to conduct troubleshooting.

[0046] The working principle and effect of the above technical solution are as follows: The data acquisition module is responsible for real-time collection of key operating parameters of the PV modules, including output voltage, output current, and output power. It also monitors environmental factors such as solar radiation intensity and temperature, which directly affect the power generation efficiency of the PV modules. The collected data is displayed in real time on a monitoring interface for operators and other system components to review and analyze. This real-time monitoring helps to promptly detect abnormalities and take appropriate measures. The performance evaluation module receives data from the safety system and analyzes and processes this data using preset algorithms and models. The analysis focuses on assessing the power generation efficiency, stability, and potential faults of the PV modules. The evaluation results are judged based on a series of set thresholds, which are derived from the specifications and test data provided by the PV module manufacturer. When the evaluation results reach or exceed the set thresholds, it indicates that the power generation efficiency and operating status of the PV modules are both at a good level. At this time, the system issues a command to open the DC switch, allowing DC power to be transmitted to the flexible intelligent control system for subsequent distribution and regulation. If the evaluation results do not reach the set thresholds, it indicates that the PV modules may be experiencing performance degradation, faults, or abnormal operation. At this point, the early warning device immediately issues a warning signal, alerting operators. Simultaneously, the system shuts down the DC switch, severing the power connection between the PV panels and the flexible intelligent control system to prevent the fault from escalating or damaging other equipment. Furthermore, the system notifies relevant personnel through pre-set communication channels to immediately troubleshoot the fault and implement appropriate remedial measures. By monitoring parameters such as the PV panel's output voltage, current, and power, as well as solar radiation intensity and temperature in real time, the system accurately assesses the panel's power generation performance and intelligently controls the DC switch based on the assessment results. This precise regulation ensures maximum utilization of solar energy and improves energy efficiency. When the assessment results reach a set threshold, the system automatically transmits DC power to the flexible intelligent control system for multi-directional distribution to meet the varying power needs of the high-speed rail system. This intelligent distribution method avoids energy waste and improves the system's overall energy efficiency. If the assessment results fall below the set threshold, the system immediately issues a warning signal and shuts down the DC switch to prevent the fault from escalating or damaging other equipment. This early warning mechanism enhances system safety and reduces losses caused by failures.

[0047] In one embodiment of the present invention, S3 includes:

[0048] S31: The power demand analysis module evaluates the power demand of the high-speed railway station's DC equipment, energy storage equipment, and inverters, and formulates a DC power distribution plan based on the evaluation results;

[0049] S32: According to the distribution plan, the DC power distribution system sends part of the DC power to the DC power-consuming equipment in the high-speed railway station, another part to the energy storage equipment, and the rest to the inverter, which converts it into AC power for use by the AC equipment.

[0050] The working principle and effect of the above technical solution are as follows: The power demand analysis module is a core component of the system, responsible for conducting a comprehensive and in-depth analysis of the power demand of various electrical devices within the high-speed rail station, including DC devices, energy storage devices, and inverters. It analyzes the real-time power consumption and power usage patterns of all DC devices within the high-speed rail station, such as lighting, signaling, and communication systems. It assesses the current power level, charging efficiency, and expected discharge requirements of the energy storage devices to ensure that they can provide stable power support when needed. It determines the required DC input for the inverter, taking into account factors such as inverter conversion efficiency, AC device power characteristics, and grid power stability. Based on these analysis results, the power demand analysis module develops a reasonable DC power distribution plan. The DC power distribution system accurately distributes DC power to various electrical devices within the high-speed rail station according to the distribution plan developed by the power demand analysis module. The distribution process includes the following: First, the DC power distribution system directly sends a portion of the DC power to DC devices within the high-speed rail station, such as DC lighting and DC motors, to meet their immediate power needs. The distribution system then directs another portion of the DC power to energy storage devices, such as batteries or supercapacitors, for charging or energy storage. This provides backup power for high-speed rail stations during grid power shortages or peak hours. The remaining DC power is then sent to inverters for conversion. The inverters convert the DC power to AC power, which is then supplied to AC-powered equipment within the high-speed rail station, such as air conditioning and elevator systems. By accurately analyzing the power demands of the high-speed rail station's DC equipment, energy storage devices, and inverters, the system develops a rational DC power distribution plan to ensure efficient use of power resources. During the distribution process, the system prioritizes the power needs of critical equipment while balancing the charging and discharging of energy storage devices and the conversion efficiency of inverters, thereby achieving optimal overall energy allocation. Through real-time monitoring and intelligent control, the system ensures stable power support for high-speed rail stations during grid power shortages or peak hours, preventing power fluctuations from disrupting normal train operations.

[0051] In one embodiment of the present invention, the DC power distribution scheme includes:

[0052] When 6≤t≤18, the PV panels generate high power. After meeting the power needs of the high-speed railway station's DC and AC equipment, the flexible intelligent control system allocates excess DC power to the energy storage device for charging. When 18<t≤22, sunlight gradually weakens, and the PV panels' power generation decreases accordingly. Meanwhile, the DC and AC equipment are at their peak power consumption period. At this time, the flexible intelligent control system reduces the DC power supply to the energy storage device and prioritizes DC power allocation to the DC and AC equipment.

[0053] When 22<t<time 6 of the next day, the photovoltaic panels stop generating electricity due to the absence of sunlight. At this time, the energy storage device will supply the DC power stored during the day to the DC and AC devices. In addition, the flexible intelligent control system will predict the power consumption of the DC and AC devices in the next moment, and then distribute the power according to the DC power distribution factor.

[0054] The flexible intelligent control system predicts the power consumption of the DC device and the AC device at time t and distributes the DC power according to the DC power distribution factor. The DC power distribution factor is obtained by the following formula:

[0055]

[0056] Where a(t) represents the DC power allocation factor, D(t) represents the power demand forecast value of the DC device at time t, A(t) represents the power demand forecast value of the AC device at time t, η1 represents the efficiency of the inverter in converting DC power into AC power, η2 represents the charging efficiency of the energy storage device, C0 represents the maximum capacity of the energy storage device, and C t represents the remaining capacity of the energy storage device at time t, and T represents the value corresponding to the ambient temperature;

[0057] When 0.5≤a(t)≤0.8, it means that it is daytime, and 50%-80% of the electricity is transferred to the energy storage device by the flexible intelligent control system, but the transferred electricity will not exceed 80% to avoid overcharging of the energy storage device;

[0058] When 0<a(t)<0.5, it means that it is in the evening to night time, and at most 50% of the DC power is delivered to the energy storage device, and the rest of the power is used for DC equipment and AC equipment;

[0059] During the early morning to morning time period, the photovoltaic components stop working, and the energy storage device switches from the charging mode to the discharging mode to supply power to the DC device and the AC device.

[0060] The working principle and effect of the above technical solution are as follows: in the above calculation formula, the value of the ambient temperature T is taken. For example, if the ambient temperature is 25 degrees Celsius, 25 is taken in the calculation formula. The value corresponding to the ambient temperature T not only corresponds to the time period of the day (highest during the daytime and gradually decreases from dusk to night), but also, due to the influence of temperature changes, the battery chemical reaction rate in the energy storage device will also be affected, and thus the charging efficiency of the energy storage device will also be affected. When the temperature becomes lower, the denominator in the formula becomes larger and the calculation result becomes smaller. Therefore, by introducing the temperature value, the system can dynamically adjust the energy distribution plan as the ambient temperature changes, and optimize the use and storage of electric energy through intelligent adjustment. At the same time, since the surface ambient temperature is always within a range, the introduction of the temperature value eliminates the influence of extreme values on the calculation results of the formula, and thus eliminates the influence of extreme values on DC power distribution.

[0061] During the day, solar radiation is intense, and photovoltaic panels generate high levels of power, generating large amounts of DC electricity. While the DC and AC equipment at the high-speed rail station still operate during the day, their power demand is likely more stable than in the evening and nighttime, and does not reach its peak. The flexible intelligent control system first ensures that the power needs of the DC and AC equipment at the high-speed rail station are met. Once these needs are met, the system prioritizes charging the energy storage system with any excess DC power. This ensures that the energy storage system stores sufficient energy during the day to meet the peak power demand during the evening and nighttime periods. As sunlight gradually fades, the power generation of the photovoltaic panels decreases until it ceases. During this period, the DC and AC equipment at the high-speed rail station are experiencing peak power demand, especially for lighting and ventilation systems, which consume a large amount of energy. The flexible intelligent control system will reduce the DC power supply to the energy storage system, or even suspend charging of the energy storage system, based on actual conditions, to prioritize the power needs of the DC and AC equipment. Through intelligent regulation, the system ensures the normal operation of critical equipment and maintains a stable and reliable power supply. During the early morning hours, when there is no solar radiation, the PV panels stop functioning and fail to generate DC power. While the high-speed rail station's electricity demand may decrease compared to the evening and nighttime hours, it still requires a certain amount of energy to maintain operations. During this period, a flexible and intelligent control system utilizes the DC power stored by the energy storage system during the daytime to supply DC and AC equipment. This allows the high-speed rail station to maintain a certain level of power supply even when the PV panels are not functioning, ensuring normal equipment operation and safe train operation. During the daytime, when the PV panels are generating high levels of power, the system intelligently allocates excess DC power to charge the energy storage system, maximizing the utilization of solar resources. During the evening and nighttime hours, when PV panel power generation decreases and equipment power demand increases, the system reduces charging of the energy storage system, prioritizing the power needs of DC and AC equipment, ensuring stable and reliable power supply. During the early morning hours, when the PV panels are not operating, the energy storage system releases stored energy to power the DC and AC equipment, effectively replenishing and utilizing energy. The intelligent distribution and regulation of high-speed rail energy storage discharge offers significant advantages in improving energy efficiency, energy conservation and emission reduction, intelligent management, power supply stability and reliability, and flexibility and scalability. These advantages not only enhance the overall performance and operational efficiency of high-speed rail systems but also provide strong support for achieving green, low-carbon, and sustainable transportation.

[0062] One embodiment of the present invention provides a high-speed railway station photovoltaic power supply dynamic current intelligent distribution system, the system comprising:

[0063] Photovoltaic modules: Photovoltaic modules absorb sunlight and convert light energy into direct current;

[0064] Safety system: The safety system monitors and processes photovoltaic power generation information in real time and transmits the collected DC power to a flexible intelligent control system;

[0065] Flexible intelligent control system: The flexible intelligent control system distributes DC power in real time and in multiple directions based on historical power consumption;

[0066] In addition, the DC power output terminal of the photovoltaic module is connected to the DC signal input terminal of the safety system, and the DC signal output terminal of the safety system is connected to the DC signal input terminal of the flexible intelligent control system.

[0067] The working principle and effect of the above technical solution are as follows: Photovoltaic panels on the roof of the high-speed rail system absorb sunlight. These panels convert light energy directly into direct current (DC) electricity through the photoelectric effect. The safety system monitors all aspects of the photovoltaic power generation process in real time, including the panels' power generation efficiency, ambient temperature, and light intensity. It also collects other key system parameters, such as the status of the energy storage device and the real-time power consumption of the high-speed trains. The safety system transmits this collected data to the flexible intelligent control system in real time. The flexible intelligent control system first processes and analyzes the received data, including historical power consumption statistics and trend forecasts. Based on the data analysis results, the system distributes DC power in real time, multi-directionally, according to the current photovoltaic power generation, the remaining capacity of the energy storage device, and the real-time power demand of the high-speed trains. Photovoltaic panels convert light energy into electricity. As a clean, renewable energy source, solar energy helps reduce dependence on traditional fossil fuels, lowers carbon emissions, and aligns with green, low-carbon environmental protection concepts. By monitoring the photovoltaic power generation information and the internal status of the high-speed rail system in real time, the safety system can obtain the latest data, providing a foundation for intelligent distribution. The flexible intelligent control system is based on big data analysis and prediction. It can intelligently distribute DC power in real time and in multiple directions according to historical power consumption, real-time power demand and the status of energy storage equipment, ensuring efficient energy utilization, while reducing losses in the energy conversion process, improving power quality, and enhancing system reliability and safety.

[0068] In one embodiment of the present invention, the security system includes:

[0069] Data acquisition module: The data acquisition module collects the output voltage and output current of the photovoltaic module in real time, and collects the solar radiation intensity, and displays the collected solar radiation intensity data, output voltage and output current data on the monitoring interface in real time;

[0070] Performance evaluation module: The performance evaluation module analyzes and evaluates the collected solar radiation intensity data, output voltage and output current data to obtain the photoelectric conversion rate of the photovoltaic module.

[0071] When the photoelectric conversion rate reaches the set threshold, the DC switch opens and DC power is transmitted to the flexible intelligent control system;

[0072] When the photoelectric conversion rate does not reach the set threshold, the early warning device will issue an early warning, the DC switch will be turned off, and relevant personnel will be notified to troubleshoot the problem.

[0073] In addition, the DC signal output terminal of the data acquisition module is connected to the signal input terminal of the performance evaluation module, and the evaluation signal output terminal of the performance evaluation module is connected to the DC switch.

[0074] The working principle and effect of the above technical solution are as follows: The data acquisition module is responsible for real-time collection of key operating parameters of the PV modules, including output voltage, output current, and output power. It also monitors environmental factors such as solar radiation intensity and temperature, which directly affect the power generation efficiency of the PV modules. The collected data is displayed in real time on a monitoring interface for review and analysis by operators and other system components. This real-time monitoring helps to promptly detect abnormalities and take appropriate measures. The performance evaluation module receives data from the safety system and analyzes and processes this data using preset algorithms and models. The analysis focuses on assessing the power generation efficiency, stability, and potential faults of the PV modules. The evaluation results are judged based on a series of predefined thresholds. When the evaluation results reach or exceed the set thresholds, the power generation efficiency and operating status of the PV modules are both at a good level. At this time, the system issues a command to open the DC switch, allowing DC power to be transmitted to the flexible intelligent control system for subsequent distribution and regulation. If the evaluation results do not reach the set thresholds, it indicates that the PV modules may be experiencing performance degradation, faults, or abnormal operation. In this case, the early warning device immediately issues a warning signal to alert the operator. At the same time, the system shuts down the DC switch, severing the power connection between the PV panels and the flexible intelligent control system to prevent the fault from escalating or damaging other equipment. Furthermore, the system notifies relevant personnel through pre-set communication channels to immediately troubleshoot the fault and implement appropriate remedial measures. By monitoring parameters such as the PV panel's output voltage, current, and power, as well as solar radiation intensity and temperature in real time, the system accurately assesses the panel's power generation performance and intelligently controls the DC switch based on the assessment results. This precise regulation ensures maximum utilization of solar energy and improves energy efficiency. When the assessment results reach a set threshold, the system automatically transmits DC power to the flexible intelligent control system for multi-directional distribution to meet the varying power needs of the high-speed rail system. This intelligent distribution method avoids energy waste and improves the system's overall energy efficiency. If the assessment results fall below the set threshold, the system immediately issues a warning signal and shuts down the DC switch to prevent the fault from escalating or damaging other equipment. This early warning mechanism enhances system safety and reduces losses caused by failures.

[0075] In one embodiment of the present invention, the flexible intelligent control system includes:

[0076] Power demand analysis module: This module analyzes the power demand of the high-speed railway station's DC equipment, energy storage equipment, and inverters, and formulates a DC power distribution plan based on the analysis results.

[0077] DC power distribution system: According to the distribution plan, the DC power distribution system sends part of the DC power to the DC power equipment in the high-speed railway station, another part to the energy storage equipment, and the remaining part to the inverter, which converts it into AC power for use by the AC equipment;

[0078] Furthermore, the power consumption signal output terminal of the power demand analysis module is connected to the distribution signal input terminal of the direct current distribution system.

[0079] The working principle and effect of the above technical solution are as follows: The power demand analysis module is a core component of the system, responsible for conducting a comprehensive and in-depth analysis of the power demand of various electrical devices within the high-speed rail station, including DC devices, energy storage devices, and inverters. It analyzes the real-time power consumption and power usage patterns of all DC devices within the high-speed rail station, such as lighting, signaling, and communication systems. It assesses the current power level, charging efficiency, and expected discharge requirements of the energy storage devices to ensure that they can provide stable power support when needed. It determines the required DC input for the inverter, taking into account factors such as inverter conversion efficiency, AC device power characteristics, and grid power stability. Based on these analysis results, the power demand analysis module develops a reasonable DC power distribution plan. The DC power distribution system accurately distributes DC power to various electrical devices within the high-speed rail station according to the distribution plan developed by the power demand analysis module. The distribution process includes the following: First, the DC power distribution system directly sends a portion of the DC power to DC devices within the high-speed rail station, such as DC lighting and DC motors, to meet their immediate power needs. The distribution system then directs another portion of the DC power to energy storage devices, such as batteries or supercapacitors, for charging or energy storage. This provides backup power for high-speed rail stations during grid power shortages or peak hours. The remaining DC power is then sent to inverters for conversion. The inverters convert the DC power to AC power, which is then supplied to AC-powered equipment within the high-speed rail station, such as air conditioning and elevator systems. By accurately analyzing the power demands of the high-speed rail station's DC equipment, energy storage devices, and inverters, the system develops a rational DC power distribution plan to ensure efficient use of power resources. During the distribution process, the system prioritizes the power needs of critical equipment while balancing the charging and discharging of energy storage devices and the conversion efficiency of inverters, thereby achieving optimal overall energy allocation. Through real-time monitoring and intelligent control, the system ensures stable power support for high-speed rail stations during grid power shortages or peak hours, preventing power fluctuations from disrupting normal train operations.

[0080] In one embodiment of the present invention, the No. 1 DC output terminal of the flexible intelligent control system is connected to the No. 1 DC input terminal of the DC device, the No. 2 DC output terminal of the flexible intelligent control system is connected to the DC input terminal of the energy storage device, the No. 3 DC output terminal of the flexible intelligent control system is connected to the No. 1 DC input terminal of the inverter, the AC output terminal of the inverter is connected to the AC input terminal of the AC device, the No. 1 DC output terminal of the energy storage device is connected to the No. 2 DC input terminal of the DC device, and the No. 2 DC output terminal of the energy storage device is connected to the No. 2 DC input terminal of the inverter.

[0081] The working principle and effect of the above technical solution are as follows: The flexible intelligent control system has multiple DC output terminals and a unified control center. DC devices receive power through their DC input terminals 1 and 2. The energy storage device connects to the flexible intelligent control system and inverter through its DC input and output terminals to store and release electrical energy. The inverter converts DC power into AC power for use by the AC devices. During daytime, DC power generated by photovoltaic panels first enters the flexible intelligent control system. DC output terminal 1 directly supplies DC power to DC input terminal 1 of the DC devices to meet their power needs. DC output terminal 2 distributes excess DC power to the energy storage device for charging and storage for future use. DC output terminal 3: If the inverter and AC devices do not currently require additional power, they may maintain low-power operation or standby mode; if required, DC power is distributed on demand. As sunlight decreases in the evening and nighttime, power demand for DC and AC devices gradually increases. The energy storage device supplies power to the DC device's DC input terminal 2 via its DC output terminal 1, supplementing the solar power generation shortfall. If the AC device still requires power, the DC output terminal 3 will continue to supply DC power to the inverter, which converts it to AC and supplies it to the AC input terminal of the AC device. A flexible, intelligent control system intelligently regulates power supply based on real-time power usage and the remaining capacity of the energy storage device, ensuring stable and reliable power supply. During the early morning hours, the PV panels cease operation, and all power is provided by the energy storage device. The energy storage device supplies power to the DC device and inverter via its DC output terminals 1 and 2, respectively. This flexible, intelligent control system offers significant advantages in high-speed rail energy storage discharge distribution, including efficient energy utilization, energy conservation and emission reduction, environmental protection, intelligence and automation, improved power supply stability and reliability, and flexibility and scalability. These advantages not only enhance the overall performance and operational efficiency of the high-speed rail system but also provide strong support for achieving green, low-carbon, and sustainable transportation.

[0082] 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 such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A method for intelligently distributing dynamic current of photovoltaic power supply in high-speed railway stations, characterized in that: The method comprises: S1: Photovoltaic modules convert absorbed light energy into direct current; S2: The safety system monitors and processes the photovoltaic modules' photoelectric conversion process in real time. The photovoltaic modules convert light energy into direct current (DC) and then transmit the DC to the flexible intelligent control system. S3: The flexible intelligent control system distributes DC in multiple directions in real time based on the current time period and the power demand of the high-speed railway station equipment.

2. The method for intelligent distribution of dynamic current of photovoltaic power supply for high-speed railway stations according to claim 1, characterized in that: The S2 includes: S21: The data acquisition module obtains the output voltage, output current and solar radiation intensity of the photovoltaic module in real time, and displays these data in real time on the monitoring interface; S22: The performance evaluation module analyzes and evaluates the collected solar radiation intensity, output voltage and output current data to calculate the photoelectric conversion efficiency of the photovoltaic module. When the photoelectric conversion efficiency reaches a predetermined threshold, the DC switch will turn on, allowing DC power to be transmitted to the flexible intelligent control system; When the photoelectric conversion rate does not reach the set threshold, the alarm device will send out a warning signal, turn off the DC switch, and notify relevant personnel to conduct troubleshooting.

3. The method for intelligently distributing dynamic current of photovoltaic power supply for high-speed railway stations according to claim 1, characterized in that: The S3 includes: S31: The power demand analysis module evaluates the power demand of the high-speed railway station's DC equipment, energy storage equipment, and inverters, and formulates a DC power distribution plan based on the evaluation results; S32: According to the distribution plan, the DC power distribution system sends part of the DC power to the high-speed railway station's DC power-consuming equipment, another part to the energy storage equipment, and the rest to the inverter, which converts it into AC power for use by the AC equipment.

4. The method for intelligently distributing dynamic current of photovoltaic power supply for high-speed railway stations according to claim 3, characterized in that: The DC power distribution scheme includes: When 6≤t≤18, the PV panels generate high power. After meeting the power needs of the high-speed railway station's DC and AC equipment, the flexible intelligent control system allocates excess DC power to the energy storage device for charging. When 18<t≤22, sunlight gradually weakens, and the PV panels' power generation decreases accordingly. Meanwhile, the DC and AC equipment are at their peak power consumption period. At this time, the flexible intelligent control system reduces the DC power supply to the energy storage device and prioritizes DC power allocation to the DC and AC equipment. When 22<t<time 6 of the next day, the photovoltaic panels stop generating electricity due to the absence of sunlight. At this time, the energy storage device will supply the DC power stored during the day to the DC and AC devices. In addition, the flexible intelligent control system will predict the power consumption of the DC and AC devices in the next moment, and then distribute the power according to the DC power distribution factor.

5. The method for intelligent distribution of dynamic current of photovoltaic power supply for high-speed railway stations according to claim 4, characterized in that: When it is daytime but there is insufficient sunlight, the flexible intelligent control system implements the same allocation method as that in the evening to night time period and the evening to night time period according to the actual sunlight intensity.

6. High-speed railway station photovoltaic power supply dynamic current intelligent distribution system, characterized by: The system comprises: Photovoltaic modules: Photovoltaic modules absorb sunlight and convert light energy into direct current; Safety system: The safety system monitors and processes photovoltaic power generation information in real time and transmits the collected DC power to a flexible intelligent control system; Flexible intelligent control system: The flexible intelligent control system distributes DC power in real time and in multiple directions based on historical power consumption; In addition, the DC power output terminal of the photovoltaic module is connected to the DC signal input terminal of the safety system, and the DC signal output terminal of the safety system is connected to the DC signal input terminal of the flexible intelligent control system.

7. The high-speed railway station photovoltaic power supply dynamic current intelligent distribution system according to claim 6, characterized in that: The safety system includes: Data acquisition module: The data acquisition module collects the output voltage and output current of the photovoltaic module in real time, and collects the solar radiation intensity, and displays the collected solar radiation intensity data, output voltage and output current data on the monitoring interface in real time; Performance evaluation module: The performance evaluation module analyzes and evaluates the collected solar radiation intensity data, output voltage and output current data to obtain the photoelectric conversion rate of the photovoltaic module. When the photoelectric conversion efficiency reaches a predetermined threshold, the DC switch will turn on, allowing DC power to be transmitted to the flexible intelligent control system; When the photoelectric conversion rate does not reach the set threshold, the alarm device will send out a warning signal, turn off the DC switch, and notify relevant personnel to conduct troubleshooting.

8. The high-speed railway station photovoltaic power supply dynamic current intelligent distribution system according to claim 6, characterized in that: The DC signal output terminal of the data acquisition module is connected to the signal input terminal of the performance evaluation module, and the evaluation signal output terminal of the performance evaluation module is connected to the DC switch.

9. The high-speed railway station photovoltaic power supply dynamic current intelligent distribution system according to claim 6, characterized in that: The flexible intelligent control system includes: Power demand analysis module: This module analyzes the power demand of the high-speed railway station's DC equipment, energy storage equipment, and inverters, and formulates a DC power distribution plan based on the analysis results. DC power distribution system: According to the distribution plan, the DC power distribution system sends part of the DC power to the DC power equipment in the high-speed railway station, another part to the energy storage equipment, and the remaining part to the inverter, which converts it into AC power for use by the AC equipment; Furthermore, the power consumption signal output terminal of the power demand analysis module is connected to the distribution signal input terminal of the direct current distribution system.

10. The high-speed railway station photovoltaic power supply dynamic current intelligent distribution system according to claim 6, characterized in that: The No. 1 DC output terminal of the DC power distribution system is connected to the No. 1 DC input terminal of the DC device, the No. 2 DC output terminal of the DC power distribution system is connected to the DC input terminal of the energy storage device, the No. 3 DC output terminal of the DC power distribution system is connected to the No. 1 DC input terminal of the inverter, the AC output terminal of the inverter is connected to the AC input terminal of the AC device, the No. 1 DC output terminal of the energy storage device is connected to the No. 2 DC input terminal of the DC device, and the No. 2 DC output terminal of the energy storage device is connected to the No. 2 DC input terminal of the inverter.

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