Toll station intelligent power supply system and power supply switching system

Abstract

The invention discloses a toll station intelligent power supply system and a power supply switching system, and the system comprises a photovoltaic power generation module, a power generation control module, an energy storage module, a data detection module, a power grid power supply module, a power supply switching module, and a toll station equipment power utilization module. The control chip is electrically connected with a data processor, and the data processor is electrically connected with a photovoltaic switcher and a power grid switcher; the data processor is electrically connected with a feedback regulator; a plurality of photovoltaic solar cell panels can be adopted to convert sunlight into environment-friendly electric energy and electric energy provided by a municipal power grid for power supply, mutual cooperation is achieved, the environment-friendly power supply construction cost is reduced, excessive dependence on electricity provided by the municipal power grid is achieved, meanwhile, workers can remotely monitor the power supply condition, the intelligent degree of power supply of the toll station is improved, and the working efficiency is improved. According to the power utilization condition of the toll station, the power supply can be intelligently switched, the switching power supply can be conveniently controlled, and the compensation power supply can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply for toll stations, and in particular to an intelligent power supply system and a power supply switching system for toll stations. Background Art

[0002] With the rapid development of my country's economy, infrastructure construction has been strengthened and transportation capacity has been greatly improved. As of now, the total mileage of expressways in China has exceeded 130,000 kilometers, ranking first in the world. The power distribution system of expressways provides power for toll collection, lighting, ventilation, fire protection, communication, rescue, traffic safety control, monitoring and other equipment. Power supply safety is an important guarantee for the normal passage of expressways.

[0003] Toll stations are important nodes on the road, where vehicles are charged and controlled. However, due to the large volume of traffic and the long operation time of equipment, the energy consumption of toll stations is high, which puts a certain pressure on the environment. At present, the power supply of toll stations is mainly provided by the nearby power supply network. The disadvantage is that the construction cost is high. The installation cost of a high-voltage transformer is at least tens of thousands or even hundreds of thousands. At the same time, long distances can easily lead to large power losses. If it is in mountainous areas, the line cost will be higher, and manual maintenance is often required. If there is a failure in the power facilities, it is very easy to suspend the toll station, and even cause traffic paralysis. It is also inconvenient to detect and feedback control the power supply of the grid and photovoltaic power supply, that is, it is not convenient to compensate for the power supply of a single power supply line. Summary of the invention

[0004] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide an intelligent power supply system and a power supply switching system for a toll station to solve the problems mentioned in the background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A toll station intelligent power supply system, comprising a photovoltaic power generation module, a power generation control module, an energy storage module, a data detection module, a power grid power supply module, a power supply switching module and a toll station equipment power module;

[0007] The photovoltaic power generation module is used to convert sunlight into environmentally friendly electrical energy using a plurality of photovoltaic solar panels, and transmit the electrical energy to the power generation control module through wires;

[0008] The power generation control module is responsible for controlling the voltage and current of the photovoltaic solar panel. Its functions include: protecting the photovoltaic components, regulating the voltage, controlling the battery charging voltage, preventing the battery from being overcharged and under-voltage, and connecting to the power distribution cabinet of the toll station through wires;

[0009] The energy storage module is used to store the excess electric energy generated by the photovoltaic solar panel, and then to supplement the power generation during peak power consumption and when the power generation module is unable to supply power;

[0010] The data detection module is used to monitor the power generation environment of the photovoltaic power generation module and the data parameters of the power generation control module and the energy storage module, so that the staff can remotely monitor the power supply status;

[0011] The power grid power supply module is used to electrically connect the power transmission end of the power distribution cabinet with the municipal power grid circuit to supply power to the toll station;

[0012] The power supply switching module is used to connect the power generation control module and the power grid power supply module, and intelligently switch the power supply according to the power usage of the toll station;

[0013] The toll station equipment power module is used to electrically connect the power supply of the distribution cabinet to the power equipment of the toll station in sequence through wires.

[0014] Preferably, the photovoltaic power generation module is provided with a panel angle adjustment unit and an automatic cleaning unit. The panel angle adjustment unit is used to adjust the sunlight angle of the photovoltaic solar panel according to the sunlight angle to increase the power generation. The automatic cleaning unit is used to spray water at high pressure onto the surface of the photovoltaic solar panel for washing, thereby automatically cleaning dust and stains on the surface of the photovoltaic solar panel.

[0015] Preferably, the power generation control module includes a controller unit, an inverter unit and a DC load unit, the controller unit controls the voltage and current of the photovoltaic solar panel, the inverter unit is used to convert DC power into AC power, and the DC load unit is used to connect to the inverter unit to simulate the current and voltage changes under different load conditions, test the output power, efficiency and stability of the inverter unit under different loads, provide a reference for the operation and control of the photovoltaic energy storage system, and test the discharge capacity, charging capacity and cycle life of the energy storage module under different loads, so as to provide support for the energy management and optimization of photovoltaic energy storage.

[0016] Preferably, the energy storage module includes a battery unit, a power monitoring unit and a temperature monitoring unit, the battery unit is used to store excess electrical energy in the photovoltaic power generation module using a battery, the power monitoring unit is used to monitor the status of the battery power storage, and the temperature monitoring unit is used to monitor the charging and discharging temperature of the battery.

[0017] Preferably, the battery is a lead-acid battery, a nickel-cadmium battery, a nickel-metal hydride battery or a lithium-ion battery.

[0018] Preferably, the data detection module is provided with a solar radiation monitoring unit, an outdoor temperature monitoring unit and an outdoor monitoring unit. The solar radiation monitoring unit uses a solar radiation meter to measure the total solar radiation and the spectral radiation, obtains the solar illumination data, and provides data reference for the photovoltaic solar cells. The outdoor temperature monitoring unit is used to monitor the outdoor temperature, and the outdoor monitoring unit is used to monitor the working environment of the photovoltaic solar cells.

[0019] Preferably, the grid power supply module is provided with an electric energy monitoring unit, and the electric energy monitoring unit is used to monitor the power consumption of the toll station equipment and calculate the electricity fee.

[0020] Preferably, the toll station equipment power supply module includes a toll station monitoring room power supply unit and a cloud toll lane power supply unit. The toll station monitoring room power supply unit is used to transmit the power of the distribution cabinet to the toll station monitoring room to power the toll station monitoring room equipment. The cloud toll lane power supply unit is used to transmit the power of the distribution cabinet to the unmanned toll lane equipment for powering. The toll station monitoring room equipment includes toll station communication and communication equipment, toll station computer equipment, toll station CCTV monitoring equipment, cabinets, servers and air conditioners. The unmanned toll lane equipment includes lane controllers, toll collector terminals, vehicle detectors, contactless IC card readers and writers, traffic signal lights, fee display, receipt printers and emergency lighting in the booth.

[0021] A power supply switching system for a toll station includes a control chip, the control chip is electrically connected to a data processor, the data processor is used to calculate and process the collected data, the control chip is used to generate control instructions according to the calculated data information, the data processor is electrically connected to a photovoltaic switcher and a power grid switcher, the photovoltaic switcher and the power grid switcher are used to switch the photovoltaic power supply and power grid power supply lines, the photovoltaic switcher is electrically connected to a first driver, the first driver is electrically connected to a first relay, the power grid switcher is electrically connected to a second driver, the second driver is electrically connected to a second relay, the first driver and the second driver are used to control the on and off control of the first relay and the second relay, so as to facilitate the control of the switching of the power supply mode;

[0022] The first relay and the second relay are electrically connected with a voltage detector, and the voltage detector is used to detect the voltage of the photovoltaic power supply and the grid power supply. The voltage detector is electrically connected to the data processor, and the data processor is electrically connected with a feedback regulator, and the feedback regulator is electrically connected to the first driver and the second driver. The feedback regulator is used to perform feedback regulation control according to the voltage of the photovoltaic power supply and the grid power supply, so as to achieve reverse control of the grid voltage for compensation according to the level of the photovoltaic power supply voltage to maintain voltage stability. Conversely, the grid voltage is compensated by the photovoltaic voltage to improve the stability of power supply of the entire system.

[0023] Preferably, the feedback regulation control includes a proportional gain, an integral gain, a differential gain, a threshold unit, a comparison unit and a deviation value, the detection unit is electrically connected to the proportional gain, the proportional gain is electrically connected to the integral gain, the integral gain is electrically connected to the differential gain, the threshold unit is electrically connected to the comparison unit, the threshold unit is electrically connected to the input data processor, so that the control chip can set the threshold value, the comparison unit is electrically connected to the differential gain, and the deviation value is used to be transmitted to the comparison unit;

[0024] The feedback regulation control adopts the PID control algorithm:

[0025] The mathematical expression of the PID control algorithm is:

[0026]

[0027] Where K p is the proportional gain, e(t) is the deviation number, U(t) is the controlled output, K I is the integral gain, K D is the differential gain;

[0028] The calculation of e(t) is as follows: e(t)=T1-T2, where T1 is the set voltage and T2 is the actual measured voltage.

[0029] In summary, the present invention mainly has the following beneficial effects:

[0030] First, in the intelligent power supply system of the toll station, through the cooperation of photovoltaic power generation module, power generation control module, energy storage module, data detection module, power supply module and power supply switching module, power supply can be intelligently provided according to the location of the toll station. Toll stations close to the city can use multiple photovoltaic solar panels to convert sunlight into environmentally friendly electricity and electricity provided by the municipal power grid for power supply. They cooperate with each other to reduce the construction cost of environmentally friendly power supply and excessive dependence on electricity provided by the municipal power grid. Toll stations far away from the city, in mountainous areas or deserts can adopt solar power supply, which can not only reduce dependence on traditional energy, but also reduce the emission of greenhouse gases such as carbon dioxide, with good energy-saving and environmental protection effects, and can ensure the normal operation of the toll station;

[0031] Second, in the intelligent power supply system of the toll station, the energy storage module can store the excess electricity generated by the photovoltaic solar panels, and then supplement the power generation during peak power consumption and when the power generation module is difficult to supply. The data detection module can monitor the power generation environment of the photovoltaic power generation module and the data parameters of the power generation control module and the energy storage module, so that the staff can remotely monitor the power supply status and improve the intelligence of the toll station power supply. The power supply switching module can connect the power generation control module and the grid power supply module, and intelligently switch the power supply according to the power usage of the toll station to ensure the smooth operation of the toll station.

[0032] Third, when the present invention is in use, the photovoltaic power supply line or the grid power supply line is switched through the power supply switching module, and when switching, the voltage of the photovoltaic power supply line or the grid power supply line is detected by the voltage detector, and reverse regulation control is performed through the data processor and the feedback regulator, that is, the photovoltaic power supply line and the grid power supply line are switched by detection and calculation through the feedback regulator, and in the process of single power supply, compensatory power supply can be performed through another power supply method to maintain the stability of the power supply process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural block diagram of the present invention;

[0034] Figure 2 is a block diagram of a photovoltaic power generation module of the present invention;

[0035] Figure 3 is a block diagram of a power generation control module of the present invention;

[0036] Figure 4 It is a schematic diagram of the power supply switching module of the present invention. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0038] Example 1

[0039] refer to Figure 1-Figure 3 , an intelligent power supply system for a toll station, comprising a photovoltaic power generation module, a power generation control module, an energy storage module, a data detection module, a power grid power supply module, a power supply switching module and a toll station equipment power module;

[0040] The photovoltaic power generation module is used to convert sunlight into environmentally friendly electrical energy using multiple photovoltaic solar panels, and transmit the electrical energy to the power generation control module through wires;

[0041] The power generation control module is responsible for controlling the voltage and current of the photovoltaic solar panel. Its functions include: protecting the photovoltaic components, regulating the voltage, controlling the battery charging voltage, preventing the battery from overcharging and undervoltage, and connecting with the power distribution cabinet of the toll station through wires;

[0042] The energy storage module is used to store the excess electricity generated by the photovoltaic solar panels, and then to supplement the power generation during peak power consumption and when the power generation module is unable to supply;

[0043] The data detection module is used to monitor the power generation environment of the photovoltaic power generation module and the data parameters of the power generation control module and the energy storage module, so that the staff can remotely monitor the power supply status;

[0044] The grid power supply module is used to electrically connect the transmission end of the distribution cabinet with the municipal grid circuit to supply power to the toll station;

[0045] The power supply switching module is used to connect the power generation control module and the power grid power supply module, and intelligently switch the power supply according to the power usage of the toll station;

[0046] The toll station equipment power module is used to electrically connect the power supply of the distribution cabinet to the power equipment of the toll station in sequence through wires.

[0047] The photovoltaic power generation module is provided with a panel angle adjustment unit and an automatic cleaning unit. The panel angle adjustment unit is used to adjust the sunlight angle of the photovoltaic solar panel according to the sunlight angle to increase the power generation. The automatic cleaning unit is used to spray water at high pressure onto the surface of the photovoltaic solar panel for washing, thereby automatically cleaning the dust and stains on the surface of the photovoltaic solar panel.

[0048] The above-mentioned power generation control module includes a controller unit, an inverter unit and a DC load unit. The controller unit controls the voltage and current of the photovoltaic solar panel. The inverter unit is used to convert DC power into AC power. The DC load unit is used to connect the inverter unit to simulate the current and voltage changes under different load conditions, test the output power, efficiency and stability of the inverter unit under different loads, provide a reference for the operation and control of the photovoltaic energy storage system, and test the discharge capacity, charging capacity and cycle life of the energy storage module under different loads, so as to provide support for the energy management and optimization of photovoltaic energy storage.

[0049] The energy storage module includes a battery unit, a power monitoring unit and a temperature monitoring unit. The battery unit is used to store excess electrical energy in the photovoltaic power generation module using a battery. The power monitoring unit is used to monitor the status of the battery's electrical energy storage. The temperature monitoring unit is used to monitor the charging and discharging temperature of the battery.

[0050] The above-mentioned storage battery adopts lead-acid storage battery.

[0051] The data detection module is provided with a solar radiation monitoring unit, an outdoor temperature monitoring unit and an outdoor monitoring unit. The solar radiation monitoring unit adopts a solar radiation meter to measure the total solar radiation and the spectral radiation, obtains the solar illumination data, and provides the data reference for the photovoltaic solar cells. The outdoor temperature monitoring unit is used to monitor the outdoor temperature, and the outdoor monitoring unit is used to monitor the working environment of the photovoltaic solar cells.

[0052] The above-mentioned power grid power supply module is provided with an electric energy monitoring unit, which is used to monitor the power consumption of the toll station equipment and calculate the electricity fee.

[0053] The toll station equipment power supply module includes the toll station monitoring room power supply unit and the cloud toll lane power supply unit. The toll station monitoring room power supply unit is used to transmit the power of the distribution cabinet to the toll station monitoring room to power the toll station monitoring room equipment. The cloud toll lane power supply unit is used to transmit the power of the distribution cabinet to the unmanned toll lane equipment for power supply.

[0054] The above-mentioned toll station monitoring room equipment includes toll station communication and communication equipment, toll station computer equipment, toll station CCTV monitoring equipment, cabinets, servers and air conditioners.

[0055] The unmanned toll lane equipment includes lane controller, toll collector terminal, vehicle detector, contactless IC card reader / writer, traffic signal light, fee display, receipt printer and emergency lighting in the booth.

[0056] Example 2

[0057] refer to Figure 1-Figure 3, an intelligent power supply system for a toll station, comprising a photovoltaic power generation module, a power generation control module, an energy storage module, a data detection module, a power grid power supply module, a power supply switching module and a toll station equipment power module;

[0058] The photovoltaic power generation module is used to convert sunlight into environmentally friendly electrical energy using multiple photovoltaic solar panels, and transmit the electrical energy to the power generation control module through wires;

[0059] The power generation control module is responsible for controlling the voltage and current of the photovoltaic solar panel. Its functions include: protecting the photovoltaic components, regulating the voltage, controlling the battery charging voltage, preventing the battery from overcharging and undervoltage, and connecting with the power distribution cabinet of the toll station through wires;

[0060] The energy storage module is used to store the excess electricity generated by the photovoltaic solar panels, and then to supplement the power generation during peak power consumption and when the power generation module is unable to supply;

[0061] The data detection module is used to monitor the power generation environment of the photovoltaic power generation module and the data parameters of the power generation control module and the energy storage module, so that the staff can remotely monitor the power supply status;

[0062] The grid power supply module is used to electrically connect the transmission end of the distribution cabinet with the municipal grid circuit to supply power to the toll station;

[0063] The power supply switching module is used to connect the power generation control module and the power grid power supply module, and intelligently switch the power supply according to the power usage of the toll station;

[0064] The toll station equipment power module is used to electrically connect the power supply of the distribution cabinet to the power equipment of the toll station in sequence through wires.

[0065] The photovoltaic power generation module is provided with a panel angle adjustment unit and an automatic cleaning unit. The panel angle adjustment unit is used to adjust the sunlight angle of the photovoltaic solar panel according to the sunlight angle to increase the power generation. The automatic cleaning unit is used to spray water at high pressure onto the surface of the photovoltaic solar panel for washing, thereby automatically cleaning the dust and stains on the surface of the photovoltaic solar panel.

[0066] The above-mentioned power generation control module includes a controller unit, an inverter unit and a DC load unit. The controller unit controls the voltage and current of the photovoltaic solar panel. The inverter unit is used to convert DC power into AC power. The DC load unit is used to connect the inverter unit to simulate the current and voltage changes under different load conditions, test the output power, efficiency and stability of the inverter unit under different loads, provide a reference for the operation and control of the photovoltaic energy storage system, and test the discharge capacity, charging capacity and cycle life of the energy storage module under different loads, so as to provide support for the energy management and optimization of photovoltaic energy storage.

[0067] The energy storage module includes a battery unit, a power monitoring unit and a temperature monitoring unit. The battery unit is used to store excess electrical energy in the photovoltaic power generation module using a battery. The power monitoring unit is used to monitor the status of the battery's electrical energy storage. The temperature monitoring unit is used to monitor the charging and discharging temperature of the battery.

[0068] The above-mentioned storage battery adopts a lithium-ion storage battery.

[0069] The data detection module is provided with a solar radiation monitoring unit, an outdoor temperature monitoring unit and an outdoor monitoring unit. The solar radiation monitoring unit adopts a solar radiation meter to measure the total solar radiation and the spectral radiation, obtains the solar illumination data, and provides the data reference for the photovoltaic solar cells. The outdoor temperature monitoring unit is used to monitor the outdoor temperature, and the outdoor monitoring unit is used to monitor the working environment of the photovoltaic solar cells.

[0070] The above-mentioned power grid power supply module is provided with an electric energy monitoring unit, which is used to monitor the power consumption of the toll station equipment and calculate the electricity fee.

[0071] The toll station equipment power supply module includes the toll station monitoring room power supply unit and the cloud toll lane power supply unit. The toll station monitoring room power supply unit is used to transmit the power of the distribution cabinet to the toll station monitoring room to power the toll station monitoring room equipment. The cloud toll lane power supply unit is used to transmit the power of the distribution cabinet to the unmanned toll lane equipment for power supply.

[0072] The above-mentioned toll station monitoring room equipment includes toll station communication and communication equipment, toll station computer equipment, toll station CCTV monitoring equipment, cabinets, servers and air conditioners.

[0073] The unmanned toll lane equipment includes lane controller, toll collector terminal, vehicle detector, contactless IC card reader / writer, traffic signal light, fee display, receipt printer and emergency lighting in the booth.

[0074] Embodiment 3, reference 4, a power supply switching system for a toll station, comprising a control chip, the control chip is electrically connected to a data processor, the data processor is used to calculate and process the collected data, the control chip is used to generate control instructions according to the calculated data information, the data processor is electrically connected to a photovoltaic switcher and a power grid switcher, the photovoltaic switcher and the power grid switcher are used to switch the photovoltaic power supply and power grid power supply lines, the photovoltaic switcher is electrically connected to a first driver, the first driver is electrically connected to a first relay, the power grid switcher is electrically connected to a second driver, the second driver is electrically connected to a second relay, the first driver and the second driver are used to control the on and off control of the first relay and the second relay, so as to facilitate the control of the switching of the power supply mode;

[0075] The first relay and the second relay are electrically connected with a voltage detector, and the voltage detector is used to detect the voltage of the photovoltaic power supply and the grid power supply. The voltage detector is electrically connected to the data processor, and the data processor is electrically connected with a feedback regulator, and the feedback regulator is electrically connected to the first driver and the second driver. The feedback regulator is used to perform feedback regulation control according to the voltage of the photovoltaic power supply and the grid power supply, so as to achieve reverse control of the grid voltage for compensation according to the level of the photovoltaic power supply voltage to maintain voltage stability. Conversely, the grid voltage is compensated by the photovoltaic voltage to improve the stability of power supply of the entire system.

[0076] Preferably, the feedback regulation control includes a proportional gain, an integral gain, a differential gain, a threshold unit, a comparison unit and a deviation value, the voltage detector is electrically connected to the proportional gain, the proportional gain is electrically connected to the integral gain, the integral gain is electrically connected to the differential gain, the threshold unit is electrically connected to the comparison unit, the threshold unit is electrically connected to the data input processor, so that the control chip can set the threshold value, the comparison unit is electrically connected to the differential gain, and the deviation value is used to be transmitted to the comparison unit;

[0077] The feedback regulation control adopts the PID control algorithm:

[0078] The mathematical expression of the PID control algorithm is:

[0079]

[0080] Where K p is the proportional gain, e(t) is the deviation number, U(t) is the controlled output, K I is the integral gain, K D is the differential gain;

[0081] The calculation of e(t) is as follows: e(t)=T1-T2, where T1 is the set voltage and T2 is the actual measured voltage.

[0082] The photovoltaic power supply line or the grid power supply line is switched through the power supply switching module, and when switching, the voltage of the photovoltaic power supply line or the grid power supply line is detected by the voltage detector, and reverse regulation control is performed through the data processor and the feedback regulator, that is, the photovoltaic power supply line and the grid power supply line are switched through detection and calculation by the feedback regulator, and in the process of single power supply, compensation power supply can be performed through another power supply method to maintain the stability of the power supply process.

[0083] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A toll station intelligent power supply system, characterized by: It includes photovoltaic power generation module, power generation control module, energy storage module, data detection module, grid power supply module, power supply switching module and toll station equipment power module; The photovoltaic power generation module is used to convert sunlight into environmentally friendly electrical energy using a plurality of photovoltaic solar panels, and transmit the electrical energy to the power generation control module through wires; The power generation control module is responsible for controlling the voltage and current of the photovoltaic solar panel. Its functions include: protecting the photovoltaic components, regulating the voltage, controlling the battery charging voltage, preventing the battery from being overcharged and under-voltage, and connecting to the power distribution cabinet of the toll station through wires; The energy storage module is used to store the excess electric energy generated by the photovoltaic solar panel, and then to supplement the power generation during peak power consumption and when the power generation module is unable to supply power; The data detection module is used to monitor the power generation environment of the photovoltaic power generation module and the data parameters of the power generation control module and the energy storage module, so that the staff can remotely monitor the power supply status; The power grid power supply module is used to electrically connect the power transmission end of the power distribution cabinet with the municipal power grid circuit to supply power to the toll station; The power supply switching module is used to connect the power generation control module and the power grid power supply module, and intelligently switch the power supply according to the power usage of the toll station; The toll station equipment power module is used to electrically connect the power supply of the distribution cabinet to the power equipment of the toll station in sequence through wires.

2. The intelligent power supply system for a toll station according to claim 1, characterized in that: The photovoltaic power generation module is provided with a battery panel angle adjustment unit and an automatic cleaning unit. The battery panel angle adjustment unit is used to adjust the sunlight angle of the photovoltaic solar panel according to the sunlight angle to increase the power generation. The automatic cleaning unit is used to spray water at high pressure onto the surface of the photovoltaic solar panel for washing, thereby automatically cleaning dust and stains on the surface of the photovoltaic solar panel.

3. The intelligent power supply system for a toll station according to claim 1 is characterized in that: The power generation control module includes a controller unit, an inverter unit and a DC load unit. The controller unit controls the voltage and current of the photovoltaic solar panel. The inverter unit is used to convert DC power into AC power. The DC load unit is used to connect the inverter unit to simulate the current and voltage changes under different load conditions, test the output power, efficiency and stability of the inverter unit under different loads, provide a reference for the operation and control of the photovoltaic energy storage system, and test the discharge capacity, charging capacity and cycle life of the energy storage module under different loads, so as to provide support for the energy management and optimization of photovoltaic energy storage.

4. The intelligent power supply system for a toll station according to claim 1, characterized in that: The energy storage module includes a battery unit, a power monitoring unit and a temperature monitoring unit. The battery unit is used to store excess electrical energy in the photovoltaic power generation module using a battery. The power monitoring unit is used to monitor the status of the battery's electrical energy storage. The temperature monitoring unit is used to monitor the charging and discharging temperature of the battery.

5. The intelligent power supply system for a toll station according to claim 4 is characterized in that: The storage battery is one of a lead-acid storage battery, a nickel-cadmium storage battery, a nickel-hydrogen storage battery or a lithium-ion storage battery.

6. The intelligent power supply system for a toll station according to claim 1, characterized in that: The data detection module is provided with a solar radiation monitoring unit, an outdoor temperature monitoring unit and an outdoor monitoring unit. The solar radiation monitoring unit adopts a solar radiation meter to detect and measure the total solar radiation and the spectral radiation, obtains the solar illumination data, and provides data reference for the photovoltaic solar cells. The outdoor temperature monitoring unit is used to monitor the outdoor temperature, and the outdoor monitoring unit is used to monitor the working environment of the photovoltaic solar cells.

7. The intelligent power supply system for a toll station according to claim 1 is characterized by: The power grid power supply module is provided with an electric energy monitoring unit, and the electric energy monitoring unit is used to monitor the power consumption of the toll station equipment and calculate the electricity fee.

8. The intelligent power supply system for a toll station according to claim 1, characterized in that: The toll station equipment power module includes a toll station monitoring room power supply unit and a cloud toll lane power supply unit. The toll station monitoring room power supply unit is used to transmit the power of the distribution cabinet to the toll station monitoring room to power the toll station monitoring room equipment, and the cloud toll lane power supply unit is used to transmit the power of the distribution cabinet to the unmanned toll lane equipment for power supply; The toll station monitoring room equipment includes toll station communication and telecommunication equipment, toll station computer equipment, toll station CCTV monitoring equipment, cabinets, servers and air conditioners; the unmanned toll lane equipment includes lane controller, toll collector terminal, vehicle detector, contactless IC card reader / writer, traffic signal light, fee display, receipt printer and emergency lighting in the booth.

9. A power supply switching system for a toll station, characterized in that: A control chip is included, the control chip is electrically connected to a data processor, the data processor is used to calculate and process the collected data, the control chip is used to generate control instructions according to the calculated data information, the data processor is electrically connected to a photovoltaic switcher and a power grid switcher, the photovoltaic switcher and the power grid switcher are used to switch the photovoltaic power supply and power grid power supply lines, the photovoltaic switcher is electrically connected to a first driver, the first driver is electrically connected to a first relay, the power grid switcher is electrically connected to a second driver, the second driver is electrically connected to a second relay, the first driver and the second driver are used to control the on-off control of the first relay and the second relay, so as to facilitate the control of the switching of the power supply mode; The first relay and the second relay are electrically connected with a voltage detector, and the voltage detector is used to detect the voltage of the photovoltaic power supply and the grid power supply. The voltage detector is electrically connected to the data processor, and the data processor is electrically connected with a feedback regulator, and the feedback regulator is electrically connected to the first driver and the second driver. The feedback regulator is used to perform feedback regulation control according to the voltage of the photovoltaic power supply and the grid power supply, so as to achieve reverse control of the grid voltage for compensation according to the level of the photovoltaic power supply voltage to maintain voltage stability. Conversely, the grid voltage is compensated by the photovoltaic voltage to improve the stability of power supply of the entire system.

10. A power supply switching system for a toll station according to claim 9, characterized in that: The feedback regulation control includes a proportional gain, an integral gain, a differential gain, a threshold unit, a comparison unit and a deviation value. The detection unit is electrically connected to the proportional gain, the proportional gain is electrically connected to the integral gain, the integral gain is electrically connected to the differential gain, the threshold unit is electrically connected to the comparison unit, the threshold unit is electrically connected to the input data processor, so that the control chip can set the threshold value, the comparison unit is electrically connected to the differential gain, and the deviation value is used to be transmitted to the comparison unit; The feedback regulation control adopts the PID control algorithm: The mathematical expression of the PID control algorithm is: Where K p is the proportional gain, e(t) is the deviation number, U(t) is the controlled output, K I is the integral gain, K D is the differential gain; The calculation of e(t) is as follows: e(t)=T1-T2, where T1 is the set voltage and T2 is the actual measured voltage.

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