Service area power dispatching system

Abstract

This application provides a service area power dispatching system, relating to the field of new energy technology. The system includes a photovoltaic power generation module, an AC distribution network, an energy storage module, a residential power module, a vehicle charging module, a distribution cabinet, and a control module. The photovoltaic power generation module, energy storage module, vehicle charging module, and distribution cabinet are all connected to the control module, which controls their operation. The distribution cabinet, under the control of the control module, distributes electrical energy. By adding photovoltaic power generation modules and energy storage modules to the service area, the power supply can be increased while excess energy is stored through the energy storage module, thus improving energy utilization.

Description

Technical Field

[0001] This application relates to the field of new energy technology, specifically to a service area power dispatching system. Background Technology

[0002] With the increasing popularity of electric vehicles, low-carbon and energy-saving travel has become more convenient. However, the driving range and charging time of electric vehicles still pose challenges for end users. Especially during long-distance travel, it is necessary to recharge at highway service areas. To shorten the charging time for users, queuing time must be short and charging speed must be fast. Therefore, higher requirements are placed on highway service areas: increasing the number of charging piles and the output power of single charging guns to meet the long-distance travel needs of electric vehicles and alleviate charging congestion during holidays; and building super-fast charging and high-power charging infrastructure to improve charging efficiency and shorten charging time.

[0003] However, even with increased numbers and power output of charging stations, the issue of grid capacity at the source still needs to be addressed. The grid capacity of highway service areas depends on the service area's electricity load, the grid's supply capacity, and transformer capacity. In my country, the grid capacity of highway service areas is generally between 400kVA and 800kVA. With the promotion of supercharging, the peak charging power of a single 800V high-voltage platform for pure electric vehicles can reach 400kW+, and even on a 400V platform, some models can achieve a peak charging power of 250kW. The current grid capacity of highway service areas cannot meet the demands in terms of both the number of electric vehicles and charging efficiency. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned related technologies, this application provides a service area power dispatching system to solve the above-mentioned technical problems.

[0005] This application provides a service area power dispatching system, comprising:

[0006] The system includes a photovoltaic power generation module, an AC power distribution network, an energy storage module, a residential power module, a car charging module, a power distribution cabinet, and a control module. The photovoltaic power generation module, the AC power distribution network, and the energy storage module are used to provide electrical energy, and the energy storage module is also used to store excess electrical energy.

[0007] The photovoltaic power generation module, the energy storage module, the car charging module, and the power distribution cabinet are all connected to the control module, which is used to control the operation of the photovoltaic power generation module, the energy storage module, the car charging module, and the power distribution cabinet.

[0008] The photovoltaic power generation module, the AC power distribution network, the energy storage module, the residential power module, and the vehicle charging module are all connected to the power distribution cabinet, which is used to distribute electrical energy under the control of the control module.

[0009] In one embodiment of this application, the photovoltaic power generation module includes a photovoltaic power generation unit and a photovoltaic inverter, and the photovoltaic power generation unit is connected to the distribution cabinet through the photovoltaic inverter.

[0010] In one embodiment of this application, the service area power dispatching system further includes a wind power generation module, which includes a wind power generation unit and a wind power inverter. The wind power generation unit is connected to the distribution cabinet through the wind power inverter, and the wind power generation unit is connected to the control module.

[0011] In one embodiment of this application, the household power module includes an air conditioning unit and a lighting unit.

[0012] In one embodiment of this application, the energy storage module includes an energy storage cabinet and a bidirectional inverter controller, wherein the energy storage cabinet is connected to the power distribution cabinet through the bidirectional inverter controller.

[0013] In one embodiment of this application, the control module is connected to the battery management system of the energy storage cabinet.

[0014] In one embodiment of this application, the energy storage cabinet is a lithium battery energy storage cabinet.

[0015] In one embodiment of this application, the vehicle charging module includes a split charging cabinet and multiple charging piles. The split charging cabinet is connected to the power distribution cabinet and the control module, and the multiple charging piles are connected to the split charging cabinet.

[0016] In one embodiment of this application, the service area power dispatching system further includes a transformer, and the AC distribution network is connected to the distribution cabinet through the transformer.

[0017] In one embodiment of this application, the power distribution cabinet includes a power distribution cabinet controller, and the control module is connected to the power distribution cabinet controller.

[0018] As described above, the service area power dispatching system provided in this application has the following beneficial effects:

[0019] This application discloses a service area power dispatching system, which includes a photovoltaic power generation module, an AC distribution network, an energy storage module, a residential power module, a vehicle charging module, a distribution cabinet, and a control module. The photovoltaic power generation module, AC distribution network, and energy storage module provide electrical energy, and the energy storage module also stores excess electrical energy. All components—the photovoltaic power generation module, energy storage module, vehicle charging module, and distribution cabinet—are connected to the control module, which controls their operation. The distribution cabinet, under the control of the control module, distributes electrical energy. By adding photovoltaic power generation modules and energy storage modules to the service area, the power supply to the service area can be increased, while excess electrical energy can be stored through the energy storage module, thereby improving energy utilization efficiency.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of a service area power dispatching system, as illustrated in an exemplary embodiment of this application.

[0023] Figure 2 This is a schematic diagram of the structure of a service area power dispatching system, which is another exemplary embodiment of this application. Detailed Implementation

[0024] The embodiments of this application will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be understood that the preferred embodiments are only for illustrating this application and are not intended to limit the scope of protection of this application.

[0025] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0026] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present application. However, it will be apparent to those skilled in the art that embodiments of the present application may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present application.

[0027] Please see Figure 1 , Figure 1 This is a schematic diagram illustrating the structure of a service area power dispatching system according to an exemplary embodiment of this application. (Reference) Figure 1 It can be seen that the power dispatching system for this service area may include:

[0028] Photovoltaic power generation module 110, AC power distribution network 120, energy storage module 130, household power module 140, car charging module 150, power distribution cabinet 160, control module 170.

[0029] The photovoltaic power generation module 110, the AC distribution network 120, and the energy storage module 130 are used to provide electrical energy. The energy storage module 130 is also used to store excess electrical energy.

[0030] The photovoltaic power generation module 110, energy storage module 130, car charging module 150, and power distribution cabinet 160 are all connected to the control module 170. The control module 170 is used to control the operation of the photovoltaic power generation module 110, energy storage module 130, car charging module 150, and power distribution cabinet 160.

[0031] It should be noted that the control module 170 controls the energy storage module 130 by controlling its energy storage or discharge, and by controlling its on / off state. In other words, there are four types of control over the energy storage module: energy storage on, energy storage off, discharge on, and discharge off. The control module 170 controls the photovoltaic power generation module 110 by turning it on or off. The control module 170 controls the car charging module 150 by turning it on or off. The control module 170 controls the distribution cabinet 160 by distributing electrical energy based on the power consumption and supply in the service area.

[0032] The photovoltaic power generation module 110, AC distribution network 120, energy storage module 130, residential power module 140, and vehicle charging module 150 are all connected to the distribution cabinet 160. The distribution cabinet 160 is used to allocate electrical energy under the control of the control module 170. The distribution cabinet 160 can obtain the power consumption of each connected power module and the power supply of each power supply module, and feed the power supply and power consumption back to the control module 170. The control module 170 formulates a power dispatching strategy based on the power consumption and power supply, and the distribution cabinet 160 can allocate electrical energy according to the power dispatching strategy sent by the control module 170.

[0033] Please see Figure 2 This is a schematic diagram illustrating the structure of a service area power dispatching system, as shown in another exemplary embodiment of this application. The photovoltaic power generation module 110 may include a photovoltaic power generation unit and a photovoltaic inverter. The photovoltaic power generation unit is connected to the distribution cabinet via the photovoltaic inverter, and the photovoltaic power generation unit may be connected to the control module 170. The photovoltaic power generation unit may include multiple photovoltaic arrays, which can convert solar energy into electrical energy to provide power to the service area.

[0034] In one possible implementation, the household power module 140 may include an air conditioning unit and a lighting unit. The household power module may also include a catering power unit, etc., but this embodiment does not limit this.

[0035] In one possible implementation, the energy storage module 130 includes an energy storage cabinet and a bidirectional inverter controller. The energy storage cabinet is connected to the power distribution cabinet through the bidirectional inverter controller, and the energy storage cabinet can be connected to the control module 170.

[0036] In one possible implementation, the energy storage cabinet can be a lithium battery energy storage cabinet. The energy storage cabinet can also be a lead-acid battery energy storage cabinet, a lead-carbon battery energy storage cabinet, a flow battery energy storage cabinet, etc., and this application embodiment does not limit this. When selecting a lithium battery energy storage cabinet, retired electric vehicle lithium batteries can be used as the energy storage battery source for the cabinet.

[0037] In one possible implementation, the control module 170 can be connected to the battery management system (BMS) of the energy storage cabinet.

[0038] In one possible implementation, the vehicle charging module 150 may include a split-type charging cabinet and multiple charging piles. The split-type charging cabinet is connected to the power distribution cabinet 160 and the control module 170, and the multiple charging piles are connected to the split-type charging cabinet. The vehicle charging module may include multiple split-type charging cabinets. Figure 2The illustrated car charging module 150 includes two separate charging cabinets, namely separate charging cabinet 1 and separate charging cabinet 2. Each charging station is equipped with a charging gun. The separate charging cabinets can support dynamic power distribution among multiple charging guns, and can adjust the output power of each charging gun according to charging demand to improve charging efficiency.

[0039] In one possible implementation, the service area power dispatch system may also include a transformer 180, and the AC distribution network 120 may be connected to the distribution cabinet 160 via the transformer 180.

[0040] In one possible implementation, the distribution cabinet 160 may include a distribution cabinet controller, and the control module 170 may be connected to the distribution cabinet controller. The distribution cabinet controller may be a PLC (Programmable Logic Controller).

[0041] In one possible implementation, the service area power dispatch system may also include a wind power generation module, which may include a wind power generation unit and a wind power inverter. The wind power generation unit can be connected to the distribution cabinet through the wind power inverter, and the wind power generation unit can be connected to the control module.

[0042] In some embodiments, the service area power dispatching system may include power consumption modules and power generation modules. Power consumption modules include residential power modules (catering, lighting, air conditioning, etc.), vehicle charging modules, and energy storage modules. Power generation modules include photovoltaic power generation modules, energy storage modules, and an AC distribution network. The energy storage module can be either a power generation module or a discharge device. Each module includes at least a PLC controller, a voltage / current sampling sensor, and a contactor. The PLC controller of each module transmits the current module status to the control module and receives control commands from the control module.

[0043] Each power generation module and power consumption module is connected to the distribution cabinet via wires. The distribution cabinet is equipped with at least a contactor, a leakage current protection switch, and a temperature sensor.

[0044] Due to the uncertainty of traffic flow in highway service areas, the difference in photovoltaic power generation between day and night, and the difference in AC distribution network load at different times, the service area power distribution system provided in this application embodiment has multiple operating modes. By combining different modes, the service area's role in replenishing electric vehicles can be fully utilized. Secondly, photovoltaic power generation is fully utilized, with priority given to the use of electricity generated by photovoltaic power. Thirdly, when the energy storage cabinet is not fully charged, and the AC distribution network electricity price is at a low point or big data predicts that the next 24 hours will be a peak traffic period, the energy storage cabinet can be used to store low-priced AC distribution network electricity in advance.

[0045] This application illustrates the following four scenarios:

[0046] 1. Photovoltaic power generation meets residential electricity needs, and excess electricity is used to replenish the energy storage cabinet;

[0047] Photovoltaic power generation should at least meet the electricity needs of the service area. When there is no need for electric vehicle charging, the control module controls the remaining photovoltaic power to replenish the energy storage battery.

[0048] Second, photovoltaic power generation, while AC power grid discharge, meets the electricity needs of daily life and a small number of electric vehicle charging needs;

[0049] When a small number of electric vehicles need to be charged in the service area, and the photovoltaic power generation cannot meet the electricity demand, the control module controls the AC power distribution network access through the power distribution cabinet, calculates the electricity demand, and monitors the photovoltaic power generation capacity and grid discharge capacity in real time to ensure the electricity needs of daily life and the charging needs of a small number of electric vehicles.

[0050] Third, photovoltaic power generation, while the energy storage cabinet discharges, to meet the electricity needs of daily life and a small number of electric vehicles charging needs;

[0051] When the AC distribution network is at its peak load or there is a grid failure and it cannot supply the service area, it can still ensure the electricity needs of daily life and a small number of electric vehicles by discharging through photovoltaic power generation and energy storage cabinets. The control module monitors the photovoltaic power generation capacity and the energy storage cabinet discharge capacity in real time, and limits the charging power of the split charging cabinet according to the number of power generation modules and their power generation capacity.

[0052] IV. All power generation modules are in operation to fully guarantee the electricity needs of daily life and the charging needs of a large number of electric vehicles.

[0053] During peak holiday traffic periods, when a large number of electric vehicles passing through the service area need to charge, the control module monitors the power demand, controls the connection of the AC distribution network, photovoltaic power generation modules, and energy storage cabinets, and, based on the maximum power generation capacity, ensures high-power charging of electric vehicles as much as possible while limiting the total charging power of electric vehicles to be less than the total power generation power of the service area's power dispatch system.

[0054] In summary, this application provides a service area power dispatching system. This system includes a photovoltaic (PV) power generation module, an AC distribution network, an energy storage module, a residential power module, a vehicle charging module, a distribution cabinet, and a control module. The PV, AC, and energy storage modules provide power, and the energy storage module stores excess power. All components—PV, AC, vehicle charging, and distribution cabinet—are connected to the control module, which controls their operation. The distribution cabinet, under the control of the control module, distributes power. By adding PV and energy storage modules to the service area, the power supply can be increased, and excess power can be stored, thus improving power utilization.

[0055] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "comprising" and "including" as used throughout the specification and claims are open-ended terms and should therefore be interpreted as "comprising but not limited to".

[0056] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A service area power dispatch system, characterized by, include: The system includes a photovoltaic power generation module, an AC power distribution network, an energy storage module, a residential power module, a car charging module, a power distribution cabinet, and a control module. The photovoltaic power generation module, the AC power distribution network, and the energy storage module are used to provide electrical energy, and the energy storage module is also used to store excess electrical energy. The photovoltaic power generation module, the energy storage module, the vehicle charging module, and the power distribution cabinet are all connected to the control module. The energy storage module includes an energy storage cabinet and a bidirectional inverter controller. The energy storage cabinet is connected to the power distribution cabinet through the bidirectional inverter controller. The control module is connected to the battery management system of the energy storage cabinet. The power distribution cabinet includes a power distribution cabinet controller. The control module is connected to the power distribution cabinet controller. The control module is used to control the operation of the photovoltaic power generation module, the energy storage module, the vehicle charging module, and the power distribution cabinet. The control module is also used to limit the charging power of the split-type charging cabinet according to the number of power generation modules and their power generation capacity. The photovoltaic power generation module, the AC power distribution network, the energy storage module, the residential power module, and the car charging module are all connected to the power distribution cabinet, which is used to distribute electrical energy under the control of the control module. The vehicle charging module includes a split charging cabinet and multiple charging piles. The split charging cabinet is connected to the power distribution cabinet and the control module. The multiple charging piles are connected to the split charging cabinet. Each charging pile is equipped with a charging gun. The vehicle charging module includes multiple split charging cabinets.

2. The service area electric energy dispatching system of claim 1, wherein, The photovoltaic power generation module includes a photovoltaic power generation unit and a photovoltaic inverter. The photovoltaic power generation unit is connected to the distribution cabinet through the photovoltaic inverter.

3. The system of claim 1, wherein, The service area power dispatch system also includes a wind power generation module, which includes a wind power generation unit and a wind power inverter. The wind power generation unit is connected to the distribution cabinet through the wind power inverter, and the wind power generation unit is connected to the control module.

4. The system of claim 1, wherein, The household power module includes an air conditioning unit and a lighting unit.

5. The system of claim 1, wherein, The energy storage cabinet is a lithium battery energy storage cabinet.

6. The system of claim 1, wherein, The service area power dispatching system also includes a transformer, and the AC distribution network is connected to the distribution cabinet through the transformer.

Images