Household energy router scheduling system

Abstract

The invention discloses a scheduling system for a household energy router. The system comprises a grid-connected module, a distributed energy power generation module, an energy storage module, an AC-DC voltage converter, a DC load module, an AC load module and a main control module. When the distributed energy power generation module is in a starting state, the main control module is started; according to the off-line state of the grid-connected module and the electric quantity of the energy storage module, the distributed energy power generation module is controlled to charge the energy storage module, and the grid-connected module is controlled to charge the energy storage module through the AC-DC voltage converter; or the grid-connected module charges the energy storage module through the AC / DC voltage converter; the energy storage module is controlled to discharge to the direct current load module and discharge to the alternating current load module through the alternating current and direct current voltage converter; and / or controlling the grid-connected module to discharge to the alternating current load module and discharge to the direct current load module through an alternating current and direct current voltage converter.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of energy routers, and in particular to a household energy router scheduling system. Background Art

[0002] The energy router realizes voltage conversion and energy transfer through power electronic conversion technology, and is also called a power electronic transformer, an electric energy router, etc. In addition to the voltage conversion and electrical isolation functions of traditional transformers, the energy router also has multiple functions such as two-way power flow control, power quality control, device self-protection and self-diagnosis, communication and information exchange, and is suitable for the flexible access of photovoltaic power generation, energy storage, and diversified loads. It is the neuron for building the energy Internet and plays an irreplaceable important role.

[0003] In order to meet the requirements of the complexity and diversity of power control in the future power grid, based on local consumption, the interconnection of energy units is formed from bottom to top with microgrids and families as autonomous units. The design of the energy router that connects the power grid, distributed generation equipment, energy storage equipment, and loads can meet the needs of energy interconnection. Therefore, the research and design of household energy routers are the basis for future power utilization and energy interconnection. At present, the optimal scheduling management of load power consumption, energy storage device charging and discharging, and distributed power generation has not been well carried out in the grid-connected and off-grid modes, resulting in poor overall household energy utilization efficiency, power supply quality, and reliability. Summary of the Invention

[0004] The present invention provides a household energy router scheduling system to achieve good optimal scheduling management of load power consumption, energy storage device charging and discharging, and distributed power generation in the grid-connected and off-grid modes, and improve the overall household energy utilization efficiency, power supply quality, and reliability.

[0005] To achieve the above object, the embodiments of the present invention provide a household energy router scheduling system, which includes: a grid-connected module, a distributed energy generation module, a diesel power generation module, an energy storage module, an AC-DC voltage converter, a DC load module, an AC load module, and a main control module;

[0006] The grid-connected module and the AC load module are electrically connected to the AC bus; the DC load module is electrically connected to the DC bus; the AC-DC voltage converter is connected in series between the AC bus and the DC bus; the distributed energy generation module is electrically connected to the energy storage module; the main control module is electrically connected to the grid-connected module, the distributed energy generation module, the energy storage module, the AC-DC voltage converter, the DC load module, and the AC load module;

[0007] The main control module is configured to, when the distributed energy generation module is in a startup state, control the distributed energy generation module to charge the energy storage module and the grid connection module to charge the energy storage module through the AC-DC voltage converter according to the offline state of the grid connection module and the power level of the energy storage module, or control the grid connection module to charge the energy storage module through the AC-DC voltage converter; and control the energy storage module to discharge to the DC load module and discharge to the AC load module through the AC-DC voltage converter; and / or, control the grid connection module to discharge to the AC load module and discharge to the DC load module through the AC-DC voltage converter.

[0008] Optionally, the main control module is configured to, when the distributed energy generation module is in a startup state, control the distributed energy generation module to charge the energy storage module and the grid connection module to charge the energy storage module through the AC-DC voltage converter according to the offline state of the grid connection module and the power level of the energy storage module, or control the grid connection module to charge the energy storage module through the AC-DC voltage converter; and control the energy storage module to discharge to the DC load module and discharge to the AC load module through the AC-DC voltage converter; and / or, control the grid connection module to discharge to the AC load module and discharge to the DC load module through the AC-DC voltage converter, specifically:

[0009] When the grid connection module is in a non-offline state and the energy storage module has less than a first preset power level, control the grid connection module to charge the energy storage module through the AC-DC voltage converter, and control the distributed energy generation module to charge the energy storage module; simultaneously control the grid connection module to discharge to the AC load module, and control the grid connection module to discharge to the DC load module through the AC-DC voltage converter;

[0010] When the grid connection module is in an offline state and the energy storage module has less than the first preset power level, control the distributed energy generation module to charge the energy storage module; simultaneously control the energy storage module to discharge to the DC load module and discharge to the AC load module through the AC-DC voltage converter;

[0011] When the grid connection module is in a non-offline state and the energy storage module has more than the first preset power level, control the distributed energy generation module to charge the energy storage module; and control the energy storage module to discharge to the DC load module; control the energy storage module to discharge to the AC load module through the AC-DC voltage converter; or control the grid connection module to discharge to the load module;

[0012] When the grid-connection module is in the off-line state and the energy storage module has a power greater than the first preset power, control the distributed energy generation module to charge the energy storage module; and control the energy storage module to discharge to the DC load module, and control the energy storage module to discharge to the AC load module through the AC-DC voltage converter.

[0013] Optionally, the main control module is further configured to, when the distributed energy generation module is not in the startup state, control the grid-connection module to charge the energy storage module through the AC-DC voltage converter according to the off-line state of the grid-connection module and the power of the energy storage module; or the energy storage module does not charge; control the energy storage module to discharge to the DC load module and discharge to the AC load module through the AC-DC voltage converter; or control the grid-connection module to discharge to the AC load module and discharge to the DC load module through the AC-DC voltage converter.

[0014] Optionally, the main control module is further configured to, when the distributed energy generation module is not in the startup state, control the grid-connection module to charge the energy storage module through the AC-DC voltage converter according to the off-line state of the grid-connection module and the power of the energy storage module; or the energy storage module does not charge; control the energy storage module to discharge to the DC load module and discharge to the AC load module through the AC-DC voltage converter; or control the grid-connection module to discharge to the AC load module and discharge to the DC load module through the AC-DC voltage converter, specifically:

[0015] When the grid-connection module is in the non-off-line state and the power of the energy storage module is greater than the first preset power, control the energy storage module not to charge; at the same time, control the grid-connection module to supply power to the AC load module and supply power to the DC load module through the AC-DC voltage converter;

[0016] When the grid-connection module is in the off-line state and the power of the energy storage module is greater than the first preset power, control the energy storage module not to charge; at the same time, control the energy storage module to supply power to the DC load module and supply power to the AC load module through the AC-DC voltage converter;

[0017] When the grid-connection module is in the non-off-line state and the power of the energy storage module is less than the first preset power, control the grid-connection module to charge the energy storage module through the AC-DC voltage converter; control the grid-connection module to supply power to the AC load module and supply power to the DC load module through the AC-DC voltage converter;

[0018] When the grid-connected module is in the offline state and the power of the energy storage module is less than the first preset power, control the energy storage module not to charge; at the same time, control the energy storage module to supply power to the DC load module and supply power to the AC load module through the AC-DC voltage converter.

[0019] Optionally, the system further includes: a diesel power generation module; the main control module is further specifically:

[0020] When the grid-connected module is in the offline state and the energy storage module is less than the second preset power, control the distributed energy generation module to charge the energy storage module; at the same time, control the energy storage module to discharge and the diesel power generation module to discharge to the DC load module and the AC load module;

[0021] When the grid-connected module is in the offline state and the energy storage module is less than the third preset power, control the distributed energy generation module to charge the energy storage module; at the same time, control the energy storage module not to discharge, and control the diesel power generation module to discharge to the DC load and the AC load module.

[0022] Optionally, the system further includes: a diesel power generation module; the main control module is further specifically:

[0023] When the grid-connected module is in the offline state and the energy storage module is less than the second preset power, control the energy storage module not to charge; at the same time, control the energy storage module to discharge and the diesel power generation module to discharge to the DC load module and the AC load module;

[0024] When the grid-connected module is in the offline state and the energy storage module is less than the third preset power, control the energy storage module not to charge; at the same time, control the energy storage module not to discharge, and control the diesel power generation module to discharge to the DC load module and the AC load module.

[0025] Optionally, the energy storage module includes an energy storage unit and a DC voltage converter; the energy storage unit is electrically connected to the DC voltage converter; the DC voltage converter is electrically connected to the DC bus.

[0026] Optionally, the grid-connected module includes a grid-connected port and a first switch; the grid-connected port is electrically connected to the AC bus through the first switch.

[0027] Optionally, the distributed energy generation module includes a photovoltaic power generation unit, a second switch, a DC / DC unit, a DC / AC unit, a third switch, and a wind power generation unit; the photovoltaic power generation unit is electrically connected to the energy storage module through the serially connected second switch and the DC / DC unit; the wind power generation unit is electrically connected to the energy storage module through the serially connected third switch and the DC / AC unit.

[0028] Optionally, the DC load module includes a DC load port and a fourth switch; the DC load port is electrically connected to the DC bus through the fourth switch;

[0029] The AC load module includes an AC load port and a fifth switch; the AC load port is electrically connected to the AC bus through the fifth switch.

[0030] In the embodiment of the present invention, different scheduling management is performed according to the offline state of the grid connection module and the amount of power in the energy storage module, avoiding the reduction or damage of the service life of the energy storage battery due to too low power in the energy storage module, and at the same time meeting the power supply requirements of the AC / DC load modules, so as to realize the optimal scheduling management of the power consumption of the AC / DC load modules, the charging and discharging of the energy storage module, and the startup of the distributed power generation module, thus improving the comprehensive utilization rate of household energy; at the same time, the distributed power generation module directly charges the energy storage module, and then the energy storage module discharges to supply power to the AC / DC load, avoiding the disturbance of the unstable direct power supply from the distributed power generation module to the AC / DC load module and reducing the power quality, so as to improve the power supply quality of the AC / DC load module.

[0031] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0033] Figure 1 is a schematic structural diagram of a household energy router scheduling system provided by an embodiment of the present invention;

[0034] Figure 2 is a schematic flowchart of a control method in a household energy router scheduling system based on the startup of a distributed energy generation module;

[0035] Figure 3 It is a schematic structural diagram of another household energy router scheduling system provided by an embodiment of the present invention;

[0036] Figure 4 It is a schematic flowchart of a control method in a household energy router scheduling system based on the non-start of a distributed energy generation module provided by an embodiment of the present invention;

[0037] Figure 5 It is a schematic structural diagram of a household energy router scheduling system provided by an embodiment of the present invention. Detailed implementation manners

[0038] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0040] Figure 1 It is a schematic structural diagram of a household energy router scheduling system provided by an embodiment of the present invention, as Figure 1As shown in the figure, the household energy router scheduling system includes: a grid connection module 10, a distributed energy generation module 20, a energy storage module 30, an AC / DC voltage converter 40, a DC load module 50, an AC load module 60, and a main control module 70; the grid connection module 10 and the AC load module 60 are electrically connected to the AC bus L1; the DC load module 50 is electrically connected to the DC bus L2; the AC / DC voltage converter 40 is connected in series between the AC bus L1 and the DC bus L2; the distributed energy generation module 20 is electrically connected to the energy storage module 30; the main control module 70 is electrically connected to the grid connection module 10, the distributed energy generation module 20, the diesel power generation module 30, the energy storage module 30, the AC / DC voltage converter 40, the DC load module 50, and the AC load module 60 (not shown in the figure);

[0041] The main control module 10 is configured to, when the distributed energy generation module 20 is in a startup state, control the distributed energy generation module 20 to charge the energy storage module 30 and the grid connection module 10 to charge the energy storage module 30 through the AC / DC voltage converter 40 according to the offline state of the grid connection module 10 and the amount of electricity in the energy storage module 30, or control the grid connection module 10 to charge the energy storage module 30 through the AC / DC voltage converter 40; and control the energy storage module 30 to discharge to the DC load module 50 and discharge to the AC load module 60 through the AC / DC voltage converter 40; and / or, control the grid connection module 10 to discharge to the AC load module 60 and discharge to the DC load module 50 through the AC / DC voltage converter 40.

[0042] Among them, the offline state of the grid connection module 10 includes the grid connection module 10 being in an offline state and a non-offline state (i.e., a grid-connected state); the main control module 70 can judge the offline state of the grid connection module 10 according to the AC grid signal. If the main control module 70 receives the AC grid signal, it is judged that the grid connection module 10 is in a non-offline state; if the main control module 70 does not receive the AC grid signal, it is judged that the grid connection module 10 is in an offline state;

[0043] The distributed energy generation module 20 can be a renewable energy module such as a photovoltaic power generation module or a wind power generation module; the AC / DC voltage converter 40 is an AC / DC converter and can perform the mutual conversion of AC and DC electrical energy; the DC load module 50 is a module that provides electrical energy for DC household electrical equipment; the AC load module 60 is a module that provides electrical energy for AC household electrical equipment;

[0044] In an embodiment of the present invention, when the distributed energy generation module 20 is in a startup state, the main control module 70 controls the distributed energy generation module 20 to charge the energy storage module 30 and the grid connection module 10 to charge the energy storage module 30 through the AC-DC voltage converter 40 according to the offline state of the grid connection module 10 and the power level of the energy storage module 30, or the distributed energy generation module 20 charges the energy storage module 30; and controls the energy storage module 30 to discharge to the DC load module 50 and discharge to the AC load module 60 through the AC-DC voltage converter 40; and / or, controls the grid connection module 10 to discharge to the AC load module 60 and discharge to the DC load module 50 through the AC-DC voltage converter 40. Thus, different charge and discharge scheduling management is performed according to the offline state of the grid connection module 10 and the power level of the energy storage module 30, avoiding the reduction of the energy storage battery life caused by too low power of the energy storage module 30, and at the same time meeting the power supply requirements of the AC and DC load modules. Thereby, optimal scheduling management of the power consumption of the AC and DC load modules, the charge and discharge of the energy storage module 30, and the startup of the distributed power generation module is well realized in the off-grid and grid-connected modes, so as to improve the comprehensive utilization rate of household energy; at the same time, the distributed power generation module 20 directly charges the energy storage module 30, and then the energy storage module 30 discharges to supply power to the AC and DC load modules, avoiding the disturbance caused by the unstable direct power supply of the distributed power generation module to the AC and DC load modules and reducing the power quality. Thus, the power supply quality of the AC and DC load modules is also improved.

[0045] Specifically, Figure 2 is a schematic diagram of the scheduling process structure of the household energy router scheduling system based on the startup of the distributed energy generation module provided by the embodiment of the present invention, as Figure 2 shown. The specific process of the main control module 70 executing this process when the distributed energy generation module 20 is in a startup state is as follows:

[0046] S110. The main control module determines that the distributed energy generation module is in a startup state;

[0047] S210. When the grid connection module is in a non-offline state and the energy storage module is less than the first preset power level, control the grid connection module to charge the energy storage module through the AC-DC voltage converter, and control the distributed energy generation module to charge the energy storage module; at the same time, control the grid connection module to discharge to the AC load module, and control the grid connection module to discharge to the DC load module through the AC-DC voltage converter;

[0048] Among them, the first preset power level is 90% of the standard total power level of the energy storage module 30; since the power level of the energy storage module 30 is low at this time and the grid connection module 10 is in a normal state, according to step S210, the energy storage module 30 is charged through the distributed energy module 20 and the grid connection module 10, and at the same time, the energy storage module 30 is prevented from discharging to the AC and DC load modules. Thus, a relatively high power level of the energy storage battery 30 can be ensured, and the power supply requirements of the AC and DC load modules are also met.

[0049] S211. When the grid-connection module is in the off-line state and the energy storage module has less than the first preset power, control the distributed energy generation module to charge the energy storage module; at the same time, control the energy storage module to discharge to the DC load module and discharge to the AC load module through the AC-DC voltage converter;

[0050] Among them, since the power of the energy storage module 30 is low at this time and the grid-connection module 10 is in an abnormal state, according to step S211, charge the energy storage module through the distributed energy generation module 20, avoiding damage caused by too low power of the energy storage module 30; at the same time, discharge to the AC-DC load module through the energy storage module, so as to meet the power supply requirements of the AC-DC load module in the off-grid state.

[0051] S212. When the grid-connection module is not in the off-line state and the energy storage module has more than the first preset power, control the distributed energy generation module to charge the energy storage module; control the energy storage module to discharge to the DC load module; control the energy storage module to discharge to the AC load module through the AC-DC voltage converter; or control the grid-connection module to discharge to the AC load module;

[0052] Among them, since the power of the energy storage module 30 is sufficient at this time and the grid-connection module 10 is in a normal state, according to step S212, only the distributed energy generation module 20 needs to charge the energy storage module 30, so as to ensure a relatively high power of the energy storage module 30; at the same time, discharge to the AC and DC load modules through the energy storage module 30; or control the grid-connection module 10 to discharge to the AC load module 60 to meet the power supply requirements of the AC-DC load module; it should be noted that since the grid-connection module 10 needs to pay additional fees for discharging, during this discharging process, the energy storage module 30 can be preferentially discharged, and then the grid-connection module 10 can be used to supplement the discharge.

[0053] S213. When the grid-connection module is in the off-line state and the energy storage module has more than the first preset power, control the distributed energy generation module to charge the energy storage module; control the energy storage module to discharge to the DC load module, and control the energy storage module to discharge to the AC load module through the AC-DC voltage converter.

[0054] In this embodiment, specifically when the distributed energy generation module 20 is in the startup state, different scheduling methods are executed according to different states, so that in different states, the reduction or damage of the energy storage battery life caused by too low power of the energy storage module 30 is avoided, and the power supply requirements of the AC-DC load module are also met.

[0055] Optionally, Figure 3 is a schematic structural diagram of another household energy router scheduling system provided by the embodiment of the present invention, as Figure 3As shown in the figure, the household energy router scheduling system further includes: a diesel power generation module 80; in some embodiments, when the distributed energy generation module 20 is in a startup state, the main control module 70 is specifically: when the grid connection module is in an offline state, if the power of the energy storage module 30 is less than a second preset power (for example: 30% of the power of the energy storage module 30), control the distributed energy generation module 20 to charge the energy storage module 30; at the same time, control the energy storage module 30 and the diesel power generation module 80 to discharge to the DC load module 50 and the AC load module 60; at this time, the diesel power generation module 80 discharges to the DC load module and the AC load module, which can supplement the discharge of the energy storage module 30 to the DC load module and the AC load module, thus avoiding the power of the energy storage module 30 being too low. Specifically, the discharge ratios of the energy storage module 30 and the diesel power generation module 80 can be determined according to the specific sizes of the actual DC load module 50 and the AC load module 60; it can be understood that during this discharge process, since the working current of the AC-DC voltage converter 40 is in a fixed direction in a certain state, it is necessary to avoid the diesel power generation module 80 discharging to the DC load module 50 through the AC-DC voltage converter 40 and the energy storage module discharging to the AC load module through the current conversion voltage converter 40 at the same time.

[0056] The main control module 70 is specifically: when the grid connection module 10 is in an offline state and the energy storage module 30 is less than a third preset power (for example: 20% of the power of the energy storage module 30), since the power of the energy storage module 30 is very low at this time, control the distributed energy generation module 20 to charge the energy storage module 30; at the same time, control the energy storage module 30 not to discharge, and control the diesel power generation module 80 to discharge to the DC load module 50 and the AC load module 60, so in this case, it is avoided that the power of the energy storage module 30 is too low resulting in a reduction in the life of the energy storage battery, and the power supply requirements of the AC-DC load module are also met.

[0057] Optionally, continue to refer to Figure 1 , considering that the distributed energy generation module 20 may be in a non-startup state, when the distributed energy generation module 20 is in a non-startup state, the scheduling process of the household energy router is different from the above process; specifically, when the distributed energy generation module 20 is not in a startup state, the main control module 70 is further used to control the grid connection module 10 to charge the energy storage module 30 through the AC-DC voltage converter 40 according to the offline state of the grid connection module 10 and the power of the energy storage module 30; or the energy storage module 30 does not charge; control the energy storage module 30 to discharge to the DC load module 50 and discharge to the AC load module 60 through the AC-DC voltage converter 40; or, control the grid connection module 10 to discharge to the AC load module 60 and discharge to the DC load module 50 through the AC-DC voltage converter 40.

[0058] Specifically, Figure 4It is a schematic structural diagram of the scheduling process of a household energy router scheduling system provided by an embodiment of the present invention, based on the non-start of the distributed energy generation module 20, as follows Figure 4 As shown, when the distributed energy generation module 20 is in a non-start state, the main control module 70 executes this process specifically as follows:

[0059] S310. Determine that the distributed energy generation module is in a non-start state;

[0060] S410. When the grid connection module is not in an off-line state and the power of the energy storage module is greater than the first preset power, control the energy storage module not to charge; at the same time, control the grid connection module to supply power to the AC load module and supply power to the DC load module through the AC-DC voltage converter;

[0061] Among them, the first preset power is 90% of the standard total power of the energy storage module 30; since the power of the energy storage module 30 is sufficient at this time and the grid connection module 10 is in a normal state, according to step S410, the energy storage module 30 does not need to charge. At the same time, since the energy storage module 30 does not charge at this time, it is avoided that the energy storage module 30 discharges to the AC load module 60 and the DC load module 50, but discharges through the grid connection module 10. In this way, it can be ensured that the energy storage module 30 has a high standby power and also meets the power supply requirements of the AC-DC load modules.

[0062] S411. When the grid connection module is in an off-line state and the power of the energy storage module is greater than the first preset power, control the energy storage module not to charge; at the same time, control the energy storage module to supply power to the DC load module and supply power to the AC load module through the AC-DC voltage converter.

[0063] Among them, since the distributed energy generation module 20 does not start at this time and the grid connection module 10 is off-line, the energy storage module 30 is in a non-charging state; and because the grid connection module 10 is off-line, at this time, only the energy storage module 30 can supply power to the AC-DC load modules, ensuring that the energy storage module 30 has a high standby power in the off-grid state.

[0064] S412. When the grid connection module is not in an off-line state and the power of the energy storage module is less than the first preset power, control the grid connection module to charge the energy storage module through the AC-DC voltage converter; control the grid connection module to supply power to the AC load module and supply power to the DC load module through the AC-DC voltage converter;

[0065] Among them, since the distributed energy generation module 20 does not start at this time and the power of the energy storage module 30 is low, at this time, the grid connection module 10 can charge the energy storage module 30, so as to ensure that the energy storage module 30 has a high standby power; at the same time, supply power to the AC-DC load modules through the grid connection module 10 to meet the power supply requirements of the AC-DC load modules.

[0066] S413. When the grid-connected module is in the off-line state and the power of the energy storage module is less than the first preset power, control the energy storage module not to charge; at the same time, control the energy storage module to supply power to the DC load module and supply power to the AC load module through the AC-DC voltage converter.

[0067] In this embodiment, specifically, when the distributed energy generation module 20 is in the non-start state, different scheduling methods are carried out according to different states. In this way, in different states, the reduction or damage of the energy storage battery life caused by too low power of the energy storage module 30 is avoided, and the power supply requirements of the AC-DC load module are also met.

[0068] Optionally, continue to refer to Figure 3 , the household energy router scheduling system further includes: a diesel power generation module 80; in some embodiments, when there is no start state of the distributed energy generation module 20 and the distributed energy generation module 20 is in the non-start state, the main control module 70 is further specifically: when the grid-connected module 10 is in the off-line state, if the power of the energy storage module 30 is less than the second preset power (for example: 30% of the power of the energy storage module 30), control the energy storage module 30 not to charge; at the same time, control the energy storage module 30 to discharge and the diesel power generation module 80 to discharge to the DC load module 50 and the AC load module 60; at this time, the diesel power generation module 80 discharges to the DC load module and the AC load module, which can supplement the discharge of the energy storage module 30 to the DC load module and the AC load module. In this way, the power of the energy storage module 30 is prevented from being too low, and at the same time, the power supply requirements of the AC-DC load module are met.

[0069] The main control module 70 is further specifically: when the grid-connected module 10 is in the off-line state and the energy storage module 30 is less than the third preset power (for example: 20% of the power of the energy storage module 30), the main control module 70 is further specifically: control the energy storage module 30 not to charge; at the same time, control the energy storage module 30 not to discharge, and control the diesel power generation module 80 to discharge to the DC load module 50 and the AC load module 60. In this case, the reduction of the energy storage battery life caused by too low power of the energy storage module 30 is avoided, and the power supply requirements of the AC-DC load module are also met.

[0070] Optionally, Figure 5 is a schematic structural diagram of a household energy router scheduling system provided by an embodiment of the present invention, as Figure 5As shown in the figure, the energy storage module 30 includes an energy storage unit 31 and a DC voltage converter 32; the energy storage unit 31 is electrically connected to the DC voltage converter 32; the DC voltage converter 32 is electrically connected to the DC bus L2. Among them, the DC voltage converter 32 can be a DC / DC converter; it can be understood that in the above embodiments, the main control module 70 can control the operation of the DC voltage converter 32, so that the energy storage module 30 can charge and discharge. Of course, it can be understood that the AC-DC voltage converter 40 includes an AC / DC converter 41, and the AC / DC converter 41 is connected in series between the DC bus L2 and the DC bus L1; the AC / DC converter 41 realizes the conversion of AC and DC signals.

[0071] Optionally, continue to refer to Figure 5 , the grid connection module 10 includes a grid connection port 11 and a first switch K1; the grid connection port 11 is electrically connected to the AC bus L1 through the first switch K1. Specifically, in the above embodiments, the main control module 70 can control the operation of the grid connection module 10 by controlling the opening and closing of the first switch K1.

[0072] Optionally, continue to refer to Figure 5 , the distributed energy generation module 20 includes a photovoltaic power generation unit 21, a second switch K2, a DC / DC unit 22, a wind power generation unit 23, a third switch K3 and a DC / AC unit 24; the photovoltaic power generation unit 21 is electrically connected to the energy storage module 30 (specifically to the energy storage unit 31) through the second switch K2 and the DC / DC unit 22 connected in series; the wind power generation unit 23 is electrically connected to the energy storage module 30 (specifically to the energy storage unit 31) through the third switch K3 and the DC / AC unit 24 connected in series. Specifically, in the above embodiments, the photovoltaic power generation unit 21 can be controlled to start by controlling the second switch K2 and the DC / DC unit 22 to start; the wind power generation unit 23 can be controlled to start by controlling the third switch K3 and the DC / AC unit 24 to start; so that the photovoltaic power generation unit 21 and the wind power generation unit 23 supply power to the energy storage module 30, and then the distributed energy generation module 20 supplies power to the energy storage module 30.

[0073] Optionally, continue to refer to Figure 5 , the DC load module 50 includes a DC load port 51 and a fourth switch K4; the AC load module 60 includes an AC load port 61 and a fifth switch K5. The diesel power generation module 80 includes a diesel power generation port 81 and a sixth switch K6. Similarly, by controlling the opening and closing of the fourth switch K4, the DC load module 50 can supply power to the DC load device through the DC load port 51; by controlling the opening and closing of the fifth switch K5, the AC load module 60 can supply power to the AC load device through the AC load port 61. By controlling the opening and closing of the sixth switch K6, the diesel power generation module 80 can generate power for the AC load device through the diesel power generation port 81.

[0074] Note that the above are only the preferred embodiments of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A household energy router scheduling system, characterized in that: include: Grid-connected module, distributed energy generation module, energy storage module, AC / DC voltage converter, DC load module, AC load module and main control module; The grid-connected module and the AC load module are electrically connected to the AC bus; the DC load module is electrically connected to the DC bus; the AC / DC voltage converter is connected in series between the AC bus and the DC bus; the distributed energy generation module is electrically connected to the energy storage module; the main control module is electrically connected to the grid-connected module, the distributed energy generation module, the energy storage module, the AC / DC voltage converter, the DC load module and the AC load module; The main control module is used to control the distributed energy generation module to charge the energy storage module and the grid-connected module to charge the energy storage module through the AC-DC voltage converter, or the grid-connected module to charge the energy storage module through the AC-DC voltage converter when the distributed energy generation module is in the startup state; and control the energy storage module to discharge to the DC load module and to discharge to the AC load module through the AC-DC voltage converter; and / or control the grid-connected module to discharge to the AC load and to discharge to the DC load module through the AC-DC voltage converter.

2. The household energy router scheduling system according to claim 1, characterized in that: The main control module is used to control the distributed energy generation module to charge the energy storage module and the grid-connected module to charge the energy storage module through the AC / DC voltage converter, or the grid-connected module to charge the energy storage module through the AC / DC voltage converter when the distributed energy generation module is in the startup state; and control the energy storage module to discharge to the DC load module and to discharge to the AC load module through the AC / DC voltage converter; and / or control the grid-connected module to discharge to the AC load module and to discharge to the DC load module through the AC / DC voltage converter, specifically: When the grid-connected module is in a non-offline state and the energy storage module has less than a first preset power, the grid-connected module is controlled to charge the energy storage module through the AC / DC voltage converter, and the distributed energy generation module is controlled to charge the energy storage module; at the same time, the grid-connected module is controlled to discharge to the AC load module, and the grid-connected module is controlled to discharge to the DC load module through the AC / DC voltage converter; When the grid-connected module is in an offline state and the energy storage module has less than the first preset power, the distributed energy generation module is controlled to charge the energy storage module; and at the same time, the energy storage module is controlled to discharge to the DC load module and to discharge to the AC load module through the AC / DC voltage converter; When the grid-connected module is in a non-offline state and the energy storage module has a power greater than the first preset power, the distributed energy generation module is controlled to charge the energy storage module; and the energy storage module is controlled to discharge to the DC load module; the energy storage module is controlled to discharge to the AC load module through the AC / DC voltage converter; or the grid-connected module is controlled to discharge to the load module; When the grid-connected module is in an offline state and the energy storage module has a power greater than the first preset power, the distributed energy generation module is controlled to charge the energy storage module; and the energy storage module is controlled to discharge to the DC load module, and the energy storage module is controlled to discharge to the AC load module through the AC / DC voltage converter.

3. The household energy router scheduling system according to claim 1, characterized in that: The main control module is also used to control the grid-connected module to charge the energy storage module through the AC-DC voltage converter according to the offline state of the grid-connected module and the amount of power of the energy storage module when the distributed energy generation module is not in the startup state; or to control the energy storage module not to charge; to control the energy storage module to discharge to the DC load module and to discharge to the AC load module through the AC-DC voltage converter; or to control the grid-connected module to discharge to the AC load module and to discharge to the DC load module through the AC-DC voltage converter.

4. The household energy router scheduling system according to claim 3, characterized in that: The main control module is also used to control the grid-connected module to charge the energy storage module through the AC / DC voltage converter according to the offline state of the grid-connected module and the amount of electricity of the energy storage module when the distributed energy generation module is not in the startup state; or the energy storage module is not charged; control the energy storage module to discharge to the DC load module and to discharge to the AC load module through the AC / DC voltage converter; or control the grid-connected module to discharge to the AC load module and to discharge to the DC load module through the AC / DC voltage converter, specifically: When the grid-connected module is in a non-offline state and the power of the energy storage module is greater than a first preset power, the energy storage module is controlled not to be charged; at the same time, the grid-connected module is controlled to supply power to the AC load module and to supply power to the DC load module through the AC / DC voltage converter; When the grid-connected module is in an offline state and the power of the energy storage module is greater than the first preset power, the energy storage module is controlled not to be charged; at the same time, the energy storage module is controlled to supply power to the DC load module and to supply power to the AC load module through the AC / DC voltage converter; When the grid-connected module is in a non-offline state and the power of the energy storage module is less than the first preset power, the grid-connected module is controlled to charge the energy storage module through the AC / DC voltage converter; the grid-connected module is controlled to supply power to the AC load module and to supply power to the DC load module through the AC / DC voltage converter; When the grid-connected module is in an offline state and the power of the energy storage module is less than the first preset power, the energy storage module is controlled not to be charged; at the same time, the energy storage module is controlled to supply power to the DC load module and to supply power to the AC load module through the AC / DC voltage converter.

5. The household energy router scheduling system according to claim 2, characterized in that: Also includes: Diesel engine power generation module; the main control module is also specifically: When the grid-connected module is in an offline state and the energy storage module has a power less than a second preset power, the distributed energy generation module is controlled to charge the energy storage module; at the same time, the energy storage module is controlled to discharge and the diesel generation module is controlled to discharge to the DC load module and the AC load module; When the grid-connected module is in an offline state and the energy storage module has a power less than a third preset power, the distributed energy generation module is controlled to charge the energy storage module; at the same time, the energy storage module is controlled not to discharge, and the diesel generation module is controlled to discharge to the DC load and the AC load.

6. The household energy router dispatching system according to claim 4, characterized in that: Also includes: Diesel engine power generation module; the main control module is also specifically: When the grid-connected module is in an offline state and the energy storage module has a power less than a second preset power, the energy storage module is controlled not to be charged; at the same time, the energy storage module is controlled to discharge and the diesel generator module is controlled to discharge to the DC load module and the AC load module; When the grid-connected module is in an offline state and the power of the energy storage module is less than a third preset power, the energy storage module is controlled not to be charged; at the same time, the energy storage module is controlled not to be discharged, and the diesel generator module is controlled to discharge to the DC load module and the AC load module.

7. The household energy router dispatching system according to claim 1, characterized in that: The energy storage module includes an energy storage unit and a DC voltage converter; the energy storage unit is electrically connected to the DC voltage converter; and the DC voltage converter is electrically connected to the DC bus.

8. The household energy router dispatching system according to claim 1, characterized in that: The grid-connected module includes a grid-connected port and a first switch; the grid-connected port is electrically connected to the AC bus through the first switch.

9. The household energy router scheduling system according to claim 1, characterized in that: The distributed energy generation module includes a photovoltaic power generation unit, a second switch, a DC / DC unit, a DC / AC unit, a third switch and a wind turbine power generation unit; the photovoltaic power generation unit is electrically connected to the energy storage module through the second switch and the DC / DC unit connected in series; the wind turbine power generation unit is electrically connected to the energy storage module through the third switch and the DC / AC unit connected in series.

10. The household energy router dispatching system according to claim 1, characterized in that: The DC load module includes a DC load port and a fourth switch; the DC load port is electrically connected to the DC bus through the fourth switch; The AC load module includes an AC load port and a fifth switch; the AC load port is electrically connected to the AC bus through the fifth switch.

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