Comprehensive energy station electrical system

Abstract

The utility model discloses an electrical system of a comprehensive energy station, and relates to the technical field of new energy. An energy storage device; the energy supplementing equipment is used for supplementing energy to the electric automobile; the power generation and distribution comprehensive control equipment is used for coordinating and controlling power generation and power distribution of a comprehensive energy station and is connected with the new energy power generation equipment, the energy storage equipment, the superior power distribution equipment and the energy supplement equipment, and the superior power distribution equipment is connected with a power grid; the power distribution control equipment is connected with the power generation and distribution comprehensive control equipment and the energy complementing equipment; according to the scheme, fusion of new energy power generation, electric vehicle energy complementation and the power grid is achieved, and the problems that the power supply pressure is large and the power grid is difficult to operate stably due to direct access to the power grid during electric vehicle charging at present are solved.

Description

Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to an electrical system of an integrated energy station. Background Art

[0002] By the end of 2022, the number of pure electric vehicles in China will reach 10.45 million, showing a trend of rapid growth year by year; the energy replenishment of a large number of electric vehicles has become the focus of social attention. The energy replenishment of electric vehicles is characterized by both randomness and centralization. The energy replenishment of a large number of electric vehicles has increased the pressure on the power supply of distribution network areas. In addition, the current domestic energy transformation process is accelerating. While the construction of new energy power generation equipment brings clean energy, it also brings challenges to the smooth operation of the power grid after direct access to the power grid due to the random, intermittent and fluctuating characteristics of new energy power generation. Therefore, how to integrate new energy power generation, electric vehicle energy replenishment and the power grid to solve the power supply pressure of the power grid and ensure the smooth operation of the power grid is a technical problem that needs to be solved at present. Utility Model Content

[0003] The purpose of this application is to provide an integrated energy station electrical system that realizes the integration of new energy power generation, electric vehicle energy replenishment and power grid, solving the current problems of high power supply pressure and difficulty in stable operation of the power grid.

[0004] In order to achieve the above objectives, an embodiment of the present application provides an integrated energy station electrical system, including:

[0005] New energy power generation equipment;

[0006] Energy storage equipment;

[0007] Energy replenishment equipment, the energy replenishment equipment replenishes energy for the electric vehicle;

[0008] The power generation and distribution integrated control equipment is used to coordinate and control the power generation and distribution of the integrated energy station, and is respectively connected to the new energy power generation equipment, the energy storage equipment, the upper-level power distribution equipment and the energy replenishment equipment, wherein the upper-level power distribution equipment is connected to the power grid;

[0009] The power distribution control device is connected to the power generation and distribution integrated control device and the energy replenishment device.

[0010] Optionally, the power generation and distribution integrated control device includes:

[0011] A first DC / AC module, electrically connected to the new energy power generation equipment;

[0012] A plurality of AC circuit breakers, each of which has one end electrically connected to an AC bus in the integrated energy station, and the other end electrically connected to a first DC / AC module, the energy storage device or the power distribution control device;

[0013] The integrated controller is respectively connected to the first DC / AC module, the energy storage device and the power distribution control device for communication.

[0014] Optionally, the electrical system of the integrated energy station further includes:

[0015] Multiple load collection terminals, each of which is communicatively connected to the integrated controller.

[0016] Optionally, the energy storage device includes:

[0017] An energy storage controller, which is in communication connection with the integrated controller in the power generation and distribution integrated control device;

[0018] A bidirectional AC / DC module, communicatively connected to the energy storage controller and electrically connected to an AC bus in the power generation and distribution integrated control device;

[0019] An energy storage battery is electrically connected to the bidirectional AC / DC module via a DC contactor, wherein the DC contactor is communicatively connected to the energy storage controller.

[0020] Optionally, the energy storage battery includes a second-use battery and / or a brand-new module battery, wherein the second-use battery and the brand-new module battery are arranged in different battery compartments.

[0021] Optionally, the power allocation control device includes:

[0022] A coordination controller, which is in communication connection with the integrated controller in the power generation and distribution integrated control device;

[0023] A plurality of energy controllers are respectively connected to the coordination controller for communication;

[0024] A plurality of energy conversion modules are respectively connected to the energy controller for communication and are electrically connected between the energy replenishment device and the AC bus in the integrated energy station.

[0025] Optionally, one of the energy controllers is communicatively connected to at least two energy conversion modules, and the at least two energy conversion modules are electrically connected to the same energy charging device.

[0026] Optionally, when the energy charging device is a commercial vehicle energy charging device, one power supply line of the at least two energy conversion modules is electrically connected to a charging position of the energy charging device, each charging terminal in the energy charging device is electrically connected to at least two power supply lines, and the at least two power supply lines belong to different energy conversion modules; and / or,

[0027] When the energy charging device is a passenger car energy charging device, the at least two energy conversion modules include: a first energy conversion module electrically connected to the charging terminal of the energy charging device, and a second energy conversion module electrically connected to the charging position of the energy charging device, wherein the first energy conversion module and the second energy conversion module are also connected through a controllable device.

[0028] Optionally, the energy conversion module includes:

[0029] An energy distribution terminal, the energy distribution terminal comprising a plurality of controllable power supply lines, each of the power supply lines being respectively communicatively connected to the energy controller and electrically connected to the energy replenishment device;

[0030] Multiple second AC / DC modules, the control end of each second AC / DC module is respectively communicated with the energy controller, and the input end of each second AC / DC module is electrically connected to the AC bus, and the output end of each second AC / DC module is electrically connected to different power supply lines.

[0031] Optionally, the electrical system of the integrated energy station further includes:

[0032] Auxiliary equipment, the auxiliary equipment is electrically connected to the AC bus in the integrated energy station, and the auxiliary equipment is used to assist the operation of the integrated energy station.

[0033] The above technical solution of the present application has at least the following beneficial effects:

[0034] The electrical system of the integrated energy station of the embodiment of the present application includes: a new energy power generation device for converting new energy into electric energy; an energy storage device for storing the electricity produced by the new energy power generation device; an energy replenishment device, the energy replenishment device replenishes energy for electric vehicles; a power generation and distribution integrated control device for coordinating and controlling the power generation and distribution of the integrated energy station, which is respectively connected to the new energy power generation device, the energy storage device, the upper-level power distribution device and the energy replenishment device, wherein the upper-level power distribution device is connected to the power grid; a power distribution control device, which is connected to the power generation and distribution integrated control device and the energy replenishment device. In this way, through the mutual cooperation of the power generation and distribution integrated control device and the power distribution control device, the new energy power generation, electric vehicle energy replenishment and the power grid can be integrated, so that the excess electric energy generated by the new energy power generation device or the electric energy with a small load on the power grid can be stored in the energy storage device, and the electric energy stored in the energy storage device can be provided to the energy replenishment device to power the electric vehicle. In this way, the problem of high power supply pressure and difficulty in stable operation of the power grid caused by the direct connection of electric vehicle charging to the power grid is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the electrical system of the integrated energy station according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. In addition, the "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated with each other are in an "or" relationship.

[0038] The integrated energy station electrical system provided in the embodiment of the present application is described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0039] like Figure 1 FIG. 1 is a schematic diagram of an electrical system of an integrated energy station according to an embodiment of the present application. The electrical system of the integrated energy station includes:

[0040] New energy power generation equipment is used to convert new energy into electrical energy. Here, new energy is, for example, wind energy, solar energy, etc. When the new energy is wind energy, Figure 1 As shown, the new energy power generation equipment is a wind turbine generator, which includes a wind power generation mechanism and a controller electrically connected thereto. When the new energy is light energy, Figure 1 As shown, the new energy power generation equipment is a photovoltaic array;

[0041] Energy storage equipment, used to store the excess electric energy generated by the new energy power generation equipment, and / or the electric energy generated by the power grid when the load is small, and to supply power to the load when the load is large; wherein the energy storage equipment includes, for example, a battery module and related control equipment, etc.;

[0042] Energy replenishment equipment, the energy replenishment equipment replenishes energy for the electric vehicle, for example, the energy replenishment equipment includes a charging position and a charging position, the charging position is used to charge a low-power battery replaced by the electric vehicle, and the charging position is used to charge the power battery of the electric vehicle;

[0043] The power generation and distribution integrated control equipment is used to coordinate and control the power generation and distribution of the integrated energy station, and is respectively connected to the new energy power generation equipment, the energy storage equipment, the upper-level power distribution equipment and the energy replenishment equipment, wherein the upper-level power distribution equipment is connected to the power grid;

[0044] A power distribution control device, connected to the power generation and distribution integrated control device and the energy replenishment device, for allocating power to different energy replenishment devices to achieve load balancing;

[0045] The power distribution control device obtains the working parameters of the energy replenishment device, outputs the total power demand to the power generation and distribution integrated control device, obtains the available power output by the power generation and distribution integrated control device, and allocates power to the energy replenishment device;

[0046] The power generation and distribution integrated control device obtains the total power demand and the power supply of the upper-level power distribution equipment, sends control instructions to the new energy power generation equipment and / or the energy storage equipment, and outputs available power to the power distribution control device.

[0047] The electrical system of the integrated energy station of the embodiment of the present application includes: a new energy power generation device for converting new energy into electric energy; an energy storage device for storing the electricity produced by the new energy power generation device; an energy replenishment device, wherein the energy replenishment device replenishes energy for electric vehicles; a power generation and distribution integrated control device, which is used to coordinate and control the power generation and distribution of the integrated energy station, and is respectively connected to the new energy power generation device, the energy storage device, the upper power distribution device and the energy replenishment device, wherein the upper power distribution device is connected to the power grid; a power distribution control device, which is connected to the power generation and distribution integrated control device and the energy replenishment device. In this way, through the mutual cooperation of the power generation and distribution integrated control device and the power distribution control device, the new energy power generation, the electric vehicle energy replenishment and the power grid can be integrated, so that the excess electric energy generated by the new energy power generation device and the electric energy with a small load on the power grid can be stored in the energy storage device, and the electric energy stored in the energy storage device can be provided to the energy replenishment device to supply power to the electric vehicle. In this way, the current problem of large power supply pressure caused by direct access to the power grid for electric vehicle charging and increased investment in users and the power grid is solved, and the local consumption of green electricity is realized, and the problem of the test of the stable operation of the power grid after the electric energy generated by the new energy equipment is directly connected to the power grid is solved.

[0048] As an optional implementation, the power generation and distribution integrated control device includes:

[0049] The first DC / AC module is electrically connected to the new energy power generation equipment and is used to convert the DC power generated by the new energy power generation equipment into AC power; Figure 1 As shown, one of the first DC / AC modules is electrically connected to the controller of the wind turbine, and another of the first DC / AC modules is electrically connected to the photovoltaic array;

[0050] Multiple AC circuit breakers ( Figure 1 , one end of each of the AC circuit breakers is electrically connected to the AC bus in the integrated energy station, and the other end is electrically connected to the first DC / AC module, the energy storage device or the power distribution control device;

[0051] The integrated controller is respectively connected to the first DC / AC module, the energy storage device and the power distribution control device for communication. The integrated controller is used to realize the coordinated control of the whole station and the management of the power generation equipment. Specifically, for example, firstly, the status information (such as working, standby or fault), output current, voltage and power and other information of the first DC / AC module are obtained in real time through communication; the power of the first DC / AC module can also be controlled according to the load power consumption; secondly, the working status, input and output current, voltage, power and the like of the energy storage device are obtained through information interaction with the energy storage device, so as to control the energy storage device to work in a charging state or a discharging state according to the load demand (provided by the power distribution control device) and the maximum power supply power of the upper-level power distribution equipment; thirdly, the load demand (total power demand) is obtained through information interaction with the power distribution control device, and the power provided by the new energy power generation equipment, the grid side and the energy storage device is comprehensively calculated to send the available power to the power distribution control device.

[0052] Furthermore, as an optional implementation, the electrical system of the integrated energy station further includes:

[0053] Multiple load collection terminals, each of which is connected to the integrated controller for communication, and is used to collect the opening and closing status of the AC circuit breaker associated with it, alarm information, and electrical parameters of each load circuit, etc., wherein the load circuit is a circuit electrically connected to the AC busbar through the AC circuit breaker. Figure 1As shown, the electrical system of the integrated energy station includes four load collection terminals (load collection terminal 1, load collection terminal 2, load collection terminal 3 and load collection terminal 4), each of which is respectively arranged in the space accommodating the integrated control equipment for power generation and distribution, in the space accommodating the power distribution control equipment, in each exchange station accommodating the energy replenishment equipment, etc. The load collection terminal is used to collect the opening and closing status of the AC circuit breaker connected to the AC bus of each load in the space where it is located, the alarm information and the electrical parameters of each load circuit of the AC bus (such as voltage, current, power and other information), and send the collected information to the integrated controller through communication. The integrated controller controls the energy storage device to work in the grid-connected mode or the off-grid mode according to the information whether the power supply of the power grid is normal obtained by the load collection terminal 1; in addition, the load collection terminal also receives the instructions issued by the integrated control room, and realizes the input and disconnection of each load circuit by controlling the AC circuit breaker corresponding to each load circuit.

[0054] As an optional implementation, the energy storage device includes:

[0055] An energy storage controller, which is in communication connection with the integrated controller in the power generation and distribution integrated control device;

[0056] A bidirectional AC / DC module, communicatively connected to the energy storage controller and electrically connected to an AC bus in the power generation and distribution integrated control device;

[0057] An energy storage battery is electrically connected to the bidirectional AC / DC module via a DC contactor, wherein the DC contactor is communicatively connected to the energy storage controller.

[0058] In this optional implementation, the energy storage controller is the core control unit of the energy storage device. First, the energy storage controller accepts the control of the integrated controller, and controls the bidirectional AC / DC module to switch the working mode and working state according to the working mode and working state issued by the integrated controller; specifically, the energy storage controller collects the electrical parameters (current, voltage, power) of the connection between the energy storage device and the AC bus and the parameters of the energy storage battery (the state of charge (State of Charge, SOC) information of each battery pack, the total voltage and current of the port and the voltage and temperature of the battery cells in the battery pack, etc.), so as to make a comprehensive judgment based on the above-mentioned collected parameters and the currently required working mode and working state, control the on and off of the DC contactor, and realize the commissioning or waiting for use of various types of battery packs of the energy storage battery.

[0059] As a specific implementation, the energy storage battery includes a second-use battery and / or a brand-new module battery, wherein the second-use battery and the brand-new module battery are arranged in different battery compartments. In this way, the second-use battery and the brand-new module battery can be managed separately.

[0060] In this specific implementation, the use of second-life batteries as energy storage batteries in integrated energy stations can increase the value of retired power batteries, improve green energy consumption, and improve the economic benefits of energy storage, solving the problem of high labor costs, complex processes, and inability to fully utilize the value of retired batteries in the current disassembly, screening, reorganization, or direct powdering and metal refining of retired batteries. In addition, the retired power batteries are reconstructed with new module batteries to maximize the use of the value of retired power batteries while ensuring the function of the energy storage equipment, reduce the cost of the energy storage system, and improve the economic benefits of the energy storage system.

[0061] As an optional implementation, the power allocation control device includes:

[0062] A coordination controller, which is in communication connection with the integrated controller in the power generation and distribution integrated control device;

[0063] A plurality of energy controllers are respectively connected to the coordination controller for communication;

[0064] A plurality of energy conversion modules are respectively connected to the energy controller in communication, and are electrically connected between the energy replenishment device and the AC bus in the integrated energy station, and are used to convert the AC power on the AC bus into DC power.

[0065] In this optional implementation, the power distribution control device realizes the integration of the energy conversion part within the energy charging equipment. The architecture of the energy conversion module is highly integrated and scalable, which improves the land utilization rate of the entire station, while improving the utilization rate of the energy conversion part, reducing the demand for power supply load, and reducing investment on the distribution side.

[0066] In this optional implementation, the coordination controller is the core control unit of the power distribution control device, and obtains the power demand of each energy controller through communication; specifically, the working status, working parameters, etc. of the energy conversion modules under each energy controller are obtained through communication, and the power required by each energy conversion module is calculated based on this information to obtain the total power demand, and the total power demand is sent to the integrated controller. According to the available power issued by the integrated controller and the required power of each energy controller, the available power is issued to each energy controller through preset strategies and algorithms.

[0067] As a specific implementation, the energy conversion module includes:

[0068] An energy distribution terminal, the energy distribution terminal includes a plurality of controllable power supply lines, each of which is respectively connected to the energy controller in communication (data connection) and electrically connected to the energy replenishment device; for example, the energy distribution terminal is a switch matrix / contactor matrix, and each controllable power supply line is turned on or off by controlling the closing or opening of each switch in the switch matrix / contactor matrix;

[0069] A plurality of second AC / DC modules, wherein the control end of each second AC / DC module is respectively communicatively connected to the energy controller, and the input end of each second AC / DC module is electrically connected to the AC bus, and the output end of each second AC / DC module is electrically connected to different power supply lines, wherein each second AC / DC module is used to convert the AC power in the AC bus into DC power and output it to the energy distribution terminal, so that the energy distribution terminal provides the DC power to the energy compensation device.

[0070] As a specific implementation method, Figure 1 As shown, one energy controller is connected to at least two energy conversion modules in communication, and the at least two energy conversion modules are electrically connected to the same energy compensation device. In this specific implementation, one energy controller is connected to at least two energy conversion modules in communication, and the energy controller controls the second AC / DC module in each energy conversion module to achieve load balancing while ensuring that the load demand is met.

[0071] Also Figure 1 For example, energy controller 1 controls the output voltage and current of the second AC / DC module in energy conversion module 1 and energy conversion module 2; controls the separation and combination of switch devices in the energy distribution terminal to realize the construction of electrical circuits of each output terminal (charging position, charging bin, etc.), collects the status information of switch devices, and verifies and counts the control status. In this way, load balancing can be achieved; similarly, energy controller 2 controls the output voltage and current of the second AC / DC module in energy conversion module 3 and energy conversion module 4; controls the separation and combination of switch devices in the energy distribution terminal to realize the construction of electrical circuits of each output terminal, collects the status information of switch devices, and verifies and counts the control status. Each energy controller obtains the required voltage, current, and power information of each energy distribution terminal through communication, performs summary calculations, and sends the total required power to the coordination controller.

[0072] As an optional implementation method, the energy replenishment equipment includes multiple charging positions and charging positions connected to the charging terminal. On the one hand, since it is not equipped with charging equipment, it can save floor space, make the layout of the integrated energy station more flexible, and reduce the power demand for the distribution network. On the other hand, it realizes the integration of vehicle charging and battery replacement. On the one hand, compared with the existing independent construction of vehicle charging and battery replacement, it improves the utilization rate of land; on the other hand, it solves the existing method of separate access to the distribution network for vehicle charging and battery replacement. Since vehicle charging and battery replacement are random large-capacity loads, and power distribution is generally provided according to the maximum load demand, in actual use, there is only a short-term large load demand on the distribution network, and a small long-term load demand, which increases the investment of users and power grids.

[0073] Furthermore, the energy replenishment equipment can be divided into two categories, one is commercial vehicle energy replenishment equipment for commercial vehicles, and the other is passenger vehicle energy replenishment equipment for passenger vehicles. By integrating the commercial vehicle energy replenishment equipment and the passenger vehicle energy replenishment equipment into the electrical system of the integrated energy station of the embodiment of the present application, the integrated energy station can meet the charging and battery replacement needs of both commercial vehicles and passenger vehicles.

[0074] As an optional implementation, when the energy charging device is a commercial vehicle energy charging device, one of the power supply lines of the at least two energy conversion modules is electrically connected to a charging position of the energy charging device, and each charging terminal in the energy charging device is electrically connected to at least two power supply lines, and the at least two power supply lines belong to different energy conversion modules. In this way, the high-power charging demand of commercial vehicles can be met and load balancing can be achieved; and / or,

[0075] When the energy charging device is a passenger car energy charging device, the at least two energy conversion modules include: a first energy conversion module electrically connected to the charging terminal of the energy charging device, and a second energy conversion module electrically connected to the charging position of the energy charging device, wherein the first energy conversion module and the second energy conversion module are also connected through a controllable device. Here, the controllable device is, for example, a switch or other device that can be connected and disconnected. In this way, the first energy conversion module and the second AC / DC module in the second energy conversion module can be shared.

[0076] Furthermore, as an optional implementation, the electrical system of the integrated energy station further includes:

[0077] Auxiliary equipment, the auxiliary equipment is electrically connected to the AC bus in the integrated energy station, and the auxiliary equipment is used to assist the integrated energy station in its operation. Figure 1As shown, the auxiliary equipment includes, for example, equipment represented by lighting / others, equipment represented by important loads, conventional loads and other loads. Specifically, important loads include battery replacement equipment, fire-fighting equipment, station control equipment, etc.; conventional loads include HVAC equipment, lighting equipment, etc.; other loads include inspection and maintenance equipment, etc.

[0078] Here, it should be noted that, as a specific example, the integrated energy station includes a distribution integrated power control room, a power distribution control room, a commercial vehicle battery swap station, a commercial vehicle charging station, a passenger vehicle battery swap station and a passenger vehicle charging station; wherein:

[0079] The integrated control equipment for power generation and distribution is arranged in the integrated control room for power generation and distribution, namely: the integrated control room for power generation and distribution includes a common AC bus equipped with several AC ports, an integrated controller, lighting and other loads (auxiliary equipment), multiple first DC / AC modules, and a load collection terminal, wherein the common AC bus is connected to the upper-level power distribution equipment, multiple first DC / AC modules (wind power DC / AC modules and photovoltaic DC / AC modules), (energy storage) bidirectional AC / DC modules, energy conversion modules in the power distribution control room, loads of commercial vehicle battery swap stations, and loads of passenger vehicle battery swap stations through AC circuit breakers.

[0080] The power distribution control room contains four sets of energy conversion modules (each energy conversion module includes a set of second AC / DC modules and an energy distribution terminal), 2 energy controllers, 1 coordination controller and 1 load collection terminal;

[0081] The commercial vehicle battery swap station includes charging spaces; important loads such as battery swap equipment, fire-fighting equipment, and station control equipment; conventional loads such as HVAC equipment and lighting equipment; other loads such as inspection and maintenance equipment; and 1 load collection terminal.

[0082] The passenger car battery swap station includes charging spaces; important loads such as battery swap equipment, fire-fighting equipment, and station control equipment; conventional loads such as HVAC equipment and lighting equipment; other loads such as inspection and maintenance equipment; and 1 load collection terminal.

[0083] Energy storage equipment includes second-use battery packs, new module battery packs, energy storage bidirectional AC / DC modules, energy storage controllers and battery pack switching control devices.

[0084] Specifically, the distributed wind power generation equipment is connected to the wind power DC / AC module in the power generation and distribution integrated control room (the wind turbine generator is connected to the AC bus through the controller via the wind power DC / AC module and the AC circuit breaker). The photovoltaic power generation equipment is connected to the photovoltaic DC / AC module in the power generation and distribution integrated control room (the photovoltaic array is connected to the AC bus through the photovoltaic DC / AC module and the AC circuit breaker).

[0085] The commercial vehicle charging terminal and the passenger vehicle charging terminal are respectively connected to the energy distribution terminal in the power distribution control room through the charging position.

[0086] The energy storage batteries of the energy storage equipment are divided into two independent battery compartments: second-life energy storage batteries (utilizing retired power batteries) and new module batteries. The energy storage batteries in different compartments are connected to the energy storage bidirectional AC / DC module through DC contactor control, and then connected to the AC bus through AC circuit breaker.

[0087] Energy conversion modules 1 and 2 provide energy output for electric commercial vehicles, and energy conversion modules 3 and 4 provide energy output for electric passenger vehicles. The energy conversion modules are connected to the AC busbar through switches. Specifically, the AC / DC module group in energy conversion modules 1 and 2 converts AC power into DC power, and is connected to the charging terminals of the charging positions in the commercial vehicle battery swap station and the commercial vehicle charging positions through the energy distribution terminal; the AC / DC module group in energy conversion module 3 converts AC power into DC power, and is connected to the charging terminals of the passenger vehicle charging positions through the energy distribution terminal; the AC / DC module group in energy conversion module 4 converts AC power into DC power, and is connected to the charging positions of the passenger vehicle battery swap station through the energy distribution terminal; wherein, the energy distribution terminals in the energy conversion modules 3 and 4 are connected through controllable devices (such as switches), so that the AC / DC module group in the energy conversion modules 3 and 4 is shared.

[0088] In simple terms, the electrical system of the integrated energy station of the embodiment of the present application is configured with 1 integrated controller, 1 coordinated controller, 2 energy controllers, 1 energy storage controller, and 4 load acquisition terminals. The integrated controller is connected to the wind power DC / AC device, photovoltaic DC / AC device, energy storage controller, coordinated controller, and 4 load acquisition terminals through the communication bus; the coordinated controller is connected to the energy controller 1 and the energy controller 2 through the data bus; the energy controller 1 is connected to the AC / DC module group and the energy distribution terminal in the energy conversion module 1 and the energy conversion module 2 through the communication bus; the energy controller 2 is connected to the AC / DC module group and the energy distribution terminal in the energy conversion module 3 and the energy conversion module 4 through the communication bus. Based on the above hardware structure, the various components cooperate with each other, and use some conventional algorithms to realize the integration of new energy generation, power grid and electric vehicle energy replenishment, which solves the problem of high power supply pressure caused by the direct connection of electric vehicle charging to the power grid, realizes local green energy consumption, and avoids affecting the smooth operation of the power grid.

[0089] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0090] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An electrical system for a comprehensive energy station, characterized in that: include: New energy power generation equipment; Energy storage equipment; Energy replenishment equipment, the energy replenishment equipment replenishes energy for the electric vehicle; The power generation and distribution integrated control equipment is used to coordinate and control the power generation and distribution of the integrated energy station, and is respectively connected to the new energy power generation equipment, the energy storage equipment, the upper-level power distribution equipment and the energy replenishment equipment, wherein the upper-level power distribution equipment is connected to the power grid; The power distribution control device is connected to the power generation and distribution integrated control device and the energy replenishment device.

2. The integrated energy station electrical system according to claim 1, characterized in that: The power generation and distribution integrated control equipment comprises: A first DC / AC module, electrically connected to the new energy power generation equipment; A plurality of AC circuit breakers, each of which has one end electrically connected to an AC bus in the integrated energy station, and the other end electrically connected to a first DC / AC module, the energy storage device or the power distribution control device; The integrated controller is respectively connected to the first DC / AC module, the energy storage device and the power distribution control device for communication.

3. The integrated energy station electrical system according to claim 2, characterized in that: The electrical system of the integrated energy station also includes: Multiple load collection terminals, each of which is communicatively connected to the integrated controller.

4. The integrated energy station electrical system according to claim 1, characterized in that: The energy storage device comprises: An energy storage controller, which is in communication connection with the integrated controller in the power generation and distribution integrated control device; A bidirectional AC / DC module, communicatively connected to the energy storage controller and electrically connected to an AC bus in the power generation and distribution integrated control device; An energy storage battery is electrically connected to the bidirectional AC / DC module via a DC contactor, wherein the DC contactor is communicatively connected to the energy storage controller.

5. The integrated energy station electrical system according to claim 4, characterized in that: The energy storage battery includes a second-use battery and / or a brand-new module battery, wherein the second-use battery and the brand-new module battery are arranged in different battery compartments.

6. The integrated energy station electrical system according to claim 1, characterized in that: The power distribution control device comprises: A coordination controller, which is in communication connection with the integrated controller in the power generation and distribution integrated control device; A plurality of energy controllers are respectively connected to the coordination controller for communication; A plurality of energy conversion modules are respectively connected to the energy controller for communication and are electrically connected between the energy replenishment device and the AC bus in the integrated energy station.

7. The integrated energy station electrical system according to claim 6, characterized in that: One of the energy controllers is communicatively connected to at least two energy conversion modules, and the at least two energy conversion modules are electrically connected to the same energy replenishment device.

8. The integrated energy station electrical system according to claim 7, characterized in that: When the energy charging device is a commercial vehicle energy charging device, one power supply line of the at least two energy conversion modules is electrically connected to a charging position of the energy charging device, each charging terminal in the energy charging device is electrically connected to at least two power supply lines, and the at least two power supply lines belong to different energy conversion modules; and / or, When the energy charging device is a passenger car energy charging device, the at least two energy conversion modules include: a first energy conversion module electrically connected to the charging terminal of the energy charging device, and a second energy conversion module electrically connected to the charging position of the energy charging device, wherein the first energy conversion module and the second energy conversion module are also connected through a controllable device.

9. The integrated energy station electrical system according to claim 6, 7 or 8, characterized in that: The energy conversion module comprises: An energy distribution terminal, the energy distribution terminal comprising a plurality of controllable power supply lines, each of the power supply lines being respectively communicatively connected to the energy controller and electrically connected to the energy replenishment device; Multiple second AC / DC modules, the control end of each second AC / DC module is respectively communicated with the energy controller, and the input end of each second AC / DC module is electrically connected to the AC bus, and the output end of each second AC / DC module is electrically connected to different power supply lines.

10. The integrated energy station electrical system according to claim 1, characterized in that: The electrical system of the integrated energy station also includes: Auxiliary equipment, the auxiliary equipment is electrically connected to the AC bus in the integrated energy station, and the auxiliary equipment is used to assist the operation of the integrated energy station.

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