Green energy sharing system and management method based on photovoltaic storage system

Abstract

The present invention relates to the field of photovoltaic energy storage technology, and more specifically, to a green energy sharing system and management method based on a photovoltaic storage system. The green energy sharing system comprises: a photovoltaic storage system; a user power generation system, which is configured at all or part of the users and is used to access the user load circuit; an energy router, which is configured at each user; and a system cloud platform, which is used to generate scheduling instructions based on the power generation of the photovoltaic storage system, the power generation of the user power generation system, and the power consumption of the user load circuit. The management method is used to realize energy scheduling based on the green energy sharing system. The present invention provides a new solution for the application of new energy in different environments.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic energy storage technology, and in particular to a green energy sharing system and management method based on a photovoltaic storage system. Background Art

[0002] As global carbon dioxide emissions continue to rise, the promotion and use of new energy sources are becoming more and more widespread. At present, there are traditional household energy storage systems and plug-and-play small photovoltaic storage systems for household energy storage solutions. Among them, household energy storage systems are mainly used in single-family houses with roofs, and the components generally include photovoltaic modules, inverters and energy storage batteries; small photovoltaic storage systems are mainly used in balconies, using the balcony space to assemble photovoltaic panels.

[0003] At present, large-scale photovoltaic storage systems are generally equipped with inverters, photovoltaic panels, energy storage batteries, system cloud platforms and other devices. Among them, photovoltaic panels are a device that can convert sunlight into electrical energy, also known as solar panels; inverters are generally composed of inverter bridges, control logic and filter circuits, and can be used to realize the conversion between direct current and alternating current; energy storage batteries can store and release direct current electricity; system cloud platforms can realize the reception of various data and the issuance of related instructions. In the photovoltaic storage system, the electric energy converted by the photovoltaic panels can be supplied to the grid bus or the main power supply circuit through the inverter or stored in the energy storage battery. Of course, the electric energy in the energy storage battery can also be supplied to the grid bus or the main power supply circuit through the inverter. Among them, the photovoltaic panel is directly connected to the inverter, the power flow is unidirectional, and it can convert solar energy into direct current. Among them, the inverter can convert the direct current converted by the photovoltaic panel into the required power parameters through the DC / DC circuit and / or DC / AC circuit, and the inverter can manage the charging and discharging of the energy storage battery based on the DC / DC circuit; in addition, the operation data of the inverter can also be uploaded to the system cloud platform, and the inverter can also execute the instructions issued by the system cloud platform. Among them, the energy storage battery can store electrical energy when the converted energy is sufficient, and can release power when the converted energy is insufficient. Among them, the system cloud platform mainly collects the operation data of the entire system through the inverter, and can convert these data into graphics or understandable numbers, and can also issue instructions to the inverter.

[0004] Traditional solutions all have limitations to varying degrees. For example, household energy storage systems are highly dependent on rooftop resources, and there is no way to install and distribute power to each household in scenarios such as apartments. Small-scale solar energy storage systems are limited by balcony area and can mostly only be configured to less than 2KW, which cannot meet actual household electricity needs. When there is no electricity demand, there is a waste problem due to idle electricity. Summary of the invention

[0005] In order to solve the problem that the current photovoltaic energy storage system cannot effectively achieve refined management of green energy usage in multi-user scenarios, the present invention provides a green energy sharing system and method based on a photovoltaic storage system, which can provide new solutions for the application of new energy in different environments.

[0006] The green energy sharing system based on the photovoltaic storage system according to the present invention comprises:

[0007] Photovoltaic storage system;

[0008] User power generation system, which is configured at all or part of the users and is used to access the user load circuit;

[0009] An energy router is configured at each user; the energy router is used to provide a switchable grid branch for accessing the grid bus, a green energy branch for accessing the photovoltaic storage system, and a load branch for the user's load circuit, and the grid branch and the green energy branch can switchably supply power to the load branch; and

[0010] The system cloud platform is used to generate dispatching instructions based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit. The dispatching instructions are used to control multiple users to access the photovoltaic storage system only through the green energy branch through the energy router; wherein the sum of the power consumption of the load circuits of the multiple users is balanced with the sum of the power generation of the user's power generation system and the power generation of the photovoltaic storage system of the multiple users.

[0011] Preferably, the energy router has a mains input port, a green energy input port and a load output port, the mains input port is used to access the grid bus to form a grid branch, the green energy input port is used to access the photovoltaic storage system to form a green energy branch, and the load output port is used to access the user load circuit to form a load branch; wherein a microcontroller MCU is also provided at the energy router, and the microcontroller MCU is used to realize on / off control between the load output port and the mains input port and the green energy input port.

[0012] Preferably, an energy routing meter is provided between the green energy input port and the photovoltaic storage system, and the energy routing meter is used to measure the electricity at the green energy branch and upload it to the system cloud platform.

[0013] Preferably, a user electricity meter is provided between the mains power input port and the grid bus.

[0014] As a preferred embodiment, a metering circuit is provided between the load output port and the user load circuit, and the metering circuit is used to collect the user load power. And send it to the system cloud platform; the system cloud platform uses the user load power The power consumption of the user load circuit.

[0015] As a preferred embodiment, the photovoltaic storage system includes an inverter and an energy storage battery, and the inverter can be used to collect the total power generated by the inverter. And the battery rechargeable power of the energy storage battery And the battery can discharge power And send it to the system cloud platform; the system cloud platform uses the total power generation power of the inverter As the power generation of the photovoltaic storage system.

[0016] As a preferred embodiment, the energy router is configured to collect the user power generation power of the user power generation system And send it to the system cloud platform; the system cloud platform uses the user's power generation The power generation of the user's power generation system.

[0017] Preferably, the green energy input port is connected to the load output port through the first relay group, and the AC power input port is connected to the load output port through the second relay group; the microcontroller MCU is used to control the on and off of the first relay group and the second relay group.

[0018] Preferably, the green energy input port and the mains input port are both provided with corresponding phase voltage sampling circuits, and the corresponding phase voltage sampling circuits are used to realize the phase voltage collection of each phase input at the green energy input port and the mains input port;

[0019] The green energy input port and the mains input port are both provided with a zero-crossing detection circuit, which is used to realize the zero-crossing point detection of each phase input at the green energy input port and the mains input port.

[0020] Preferably, the phase voltage sampling circuit and the zero-crossing detection circuit at the green energy input port and the mains input port are integrated into a zero-crossing detection circuit; the zero-crossing detection circuit includes:

[0021] A phase voltage sampling circuit constructed based on the first operational amplifier U1A, the phase voltage sampling circuit performs sampling and output based on the first reference voltage value, the voltage of the single-phase live wire and the voltage of the neutral wire, and the sampling output of the phase voltage sampling circuit is the sum of a set multiple of the difference between the voltage of the single-phase live wire and the voltage of the neutral wire and the first reference voltage value; and

[0022] A zero-crossing detection circuit constructed based on the second operational amplifier U2A, the zero-crossing detection circuit is used to compare the sampled output of the phase voltage sampling circuit with the second reference voltage value and output a zero-crossing signal;

[0023] The first reference voltage value and the second reference voltage value have the same value.

[0024] The green energy sharing management method based on the photovoltaic storage system according to the present invention includes:

[0025] Configure the optical storage system;

[0026] A user power generation system is configured at all or part of the users, and the user power generation system is used to access the user load circuit;

[0027] Energy routers are configured at all users. The energy routers are used to provide a mains input port, a green energy input port and a load output port. The mains input port is used to access the grid bus to form a grid branch, the green energy input port is used to access the photovoltaic storage system to form a green energy branch, and the load output port is used to access the user's load circuit to form a load branch. A microcontroller MCU is also provided at the energy router. The microcontroller MCU is used to realize the on / off control between the load output port and the mains input port and the green energy input port.

[0028] The system cloud platform generates dispatching instructions based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit. The dispatching instructions are used to control multiple users to access the photovoltaic storage system only through the green energy branch through the energy router; wherein the sum of the power consumption of the load circuits of the multiple users is balanced with the sum of the power generation of the user's power generation systems and the sum of the power generation of the photovoltaic storage system.

[0029] As a preferred option, the photovoltaic storage system includes an inverter and an energy storage battery, and the system cloud platform collects the total power generated by the inverter in real time. , the battery chargeable power of the energy storage battery And the battery can discharge power , User load power And user power generation ; Among them, the total power generated by the inverter As the power generation of the photovoltaic storage system, the user's power generation As the power generation of the user's power generation system, the user's load power The amount of electricity used as a user load circuit;

[0030] The generation of dispatching instructions based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit by the system cloud platform includes:

[0031] Get the user load power of each user And the corresponding user power generation , the user load power Greater than the user's power generation The corresponding user is classified as a positive user, and the user load power Less than the user's power generation The corresponding user is classified as a negative user; among them, the user load power Power generation with users The difference between the power surplus and the power shortage of the user ,Right now ;

[0032] Total power generation Not less than the battery chargeable power When the first scheduling instruction is generated, the first scheduling instruction is used to select a plurality of positive users and only connect them to the optical storage system, and the plurality of positive users have surplus or shortage power. The sum does not exceed the total power generation Battery power sum.

[0033] Preferably, the generation of the dispatching instruction based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit by the system cloud platform also includes:

[0034] Total power generation Less than the battery charge capacity When the second scheduling instruction is generated, the second scheduling instruction is used to select multiple negative value users and only connect them to the optical storage system, and the user surplus and shortage power of the multiple negative value users The absolute value of the sum does not exceed the battery charge capacity Total power generation difference.

[0035] Preferably, the generation of the dispatching instruction based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit by the system cloud platform also includes:

[0036] A third scheduling instruction is generated based on the total power of positive users who are not connected to the photovoltaic storage system and the total power of negative users who are not connected to the photovoltaic storage system; the third scheduling instruction is used to connect all of the two types of users with smaller total power to the photovoltaic storage system, and to control the two types of users with larger total power to only partially connect to the photovoltaic storage system; wherein the total power of different types of users connected to the photovoltaic storage system is kept basically consistent.

[0037] Preferably, the generation of the dispatching instruction based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit by the system cloud platform also includes:

[0038] A fourth dispatch instruction is generated, where the fourth dispatch instruction is used to connect the user only to the power grid bus.

[0039] As a preferred option, the system cloud platform is based on the total power generation of the inverter , Battery can discharge power And the surplus and shortage power of all users connected to the PV storage system , real-time acquisition of available power of the photovoltaic storage system ;in, ; Indicates the surplus or shortage power of all users connected to the PV storage system sum;

[0040] System cloud platform based on the total power generated by the inverter , Battery rechargeable power And the surplus and shortage power of all users connected to the PV storage system , real-time acquisition of the absorbable power of the photovoltaic storage system ;in, ;

[0041] The generation of the dispatching instruction based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit by the system cloud platform also includes:

[0042] exist and When, based on the first scheduling instruction, the microcontroller MCU controls the grid branch at the energy router to remain disconnected and the green energy branch to remain connected;

[0043] For any user, and When the power grid branch at the energy router is disconnected and the green energy branch is turned on, the microcontroller MCU is used to control the power grid branch at the energy router to be disconnected and the green energy branch to be turned on based on the second scheduling instruction;

[0044] For any user, When, based on the fourth scheduling instruction, the microcontroller MCU controls the grid branch at the energy router to remain on and the green energy branch to remain off;

[0045] For any user, and When, based on the fourth scheduling instruction, the microcontroller MCU controls the grid branch at the energy router to remain on and the green energy branch to remain off;

[0046] exist and At this time, based on the fourth scheduling instruction, the microcontroller MCU controls the grid branch at the energy router to remain turned on and the green energy branch to remain turned off.

[0047] The present invention can have the following beneficial effects:

[0048] (1) The present invention is compatible with large photovoltaic storage systems such as photovoltaic storage systems and small power generation systems such as user power generation systems (such as balcony photovoltaic). Through the scheduling performed by the system cloud platform based on the power generation of the photovoltaic storage system, the power generation of the user power generation system and the power consumption of the user load circuit, it can effectively solve the difficulties encountered when photovoltaic green energy is applied in apartment scenarios; it can be compatible with small and large photovoltaic systems at the same time, and realize energy monitoring and management in scenarios such as apartments; it enables multiple users to build an energy microgrid through green energy branches based on the power generation of the photovoltaic storage system and the power generation of the user power generation system, and according to the power consumption of the user's load circuit, thereby realizing the sharing of green energy;

[0049] (2) The solution of the present invention enables the electricity used by a single user from the photovoltaic storage system and the electricity fed into the photovoltaic storage system, as well as the electricity used by a single user from the power grid bus and the electricity fed into the power grid bus to be measured, thus achieving refined energy management;

[0050] (3) The solution of the present invention can be managed based on the electricity consumption of all users. The core is to ensure that the photovoltaic storage system does not draw electricity from the power grid or feed electricity into the power grid. Specifically, the photovoltaic storage system can provide or absorb the power shortage or surplus power of each user.

[0051] (4) The zero-crossing detection circuit can integrate the phase voltage sampling link and the zero-crossing detection link, thereby simplifying the circuit complexity; wherein, the output end of the phase voltage sampling circuit can output the phase voltage sampling signal, and the output end of the zero-crossing detection circuit can output the zero-crossing detection signal. The zero-crossing detection circuit disclosed in the present invention can perform zero-crossing detection based on the output of the phase voltage sampling circuit, and through the first operational amplifier U1A and the first reference voltage value, it can avoid the reduction of detection accuracy caused by the voltage fluctuation of the corresponding phase at the zero-crossing point. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A schematic diagram of a power distribution system using photovoltaic power generation and energy storage system in an apartment scenario;

[0053] Figure 2 is a schematic block diagram of the green energy sharing system in Example 1;

[0054] Figure 3 It is a schematic block diagram of the energy router in Example 1;

[0055] Figure 4 This is a schematic diagram of the working process of another green energy sharing system in Example 1;

[0056] Figure 5 is a schematic block diagram of another green energy sharing system in Example 1;

[0057] Figure 6 This is a topological diagram of a three-phase energy router in Example 2;

[0058] Figure 7 This is a control schematic diagram of the three-phase energy router in Example 2;

[0059] Figure 8 This is a control flow diagram of the three-phase energy router in Example 2;

[0060] Fig. 9 This is a topological diagram of a single-phase energy router in Example 2;

[0061] Fig.10 This is a control schematic diagram of a single-phase energy router in Example 2;

[0062] Fig.11 4 is a circuit diagram of the zero-crossing detection circuit in Example 3;

[0063] Fig.12 is an output signal timing diagram of the zero-crossing detection circuit in Example 3;

[0064] Fig.13 The output signal timing diagram of the zero-crossing detection circuit in Example 3 after removing the hysteresis link;

[0065] Fig.14 is a circuit diagram of the relay control circuit in Example 4;

[0066] Fig.15 Schematic diagram of a flow chart of a method for monitoring phase loss and phase sequence in Example 5;

[0067] Fig.16 It is a schematic block diagram of the software phase-locked loop in Example 5;

[0068] Fig.17 The timing diagram of the three-phase voltage, stationary coordinate system voltage, rotating phase angle and synchronous rotating coordinate system voltage of the three-phase AC power under the positive sequence connection method is given in the figure;

[0069] Fig.18 The timing diagram of the three-phase voltage, stationary coordinate system voltage, rotating phase angle and synchronous rotating coordinate system voltage of the three-phase alternating current under the negative sequence connection method is given in the figure;

[0070] Fig.19 The timing diagram of the three-phase voltage, stationary reference system voltage, rotating phase angle and synchronous rotating reference system voltage of the three-phase AC power under another positive sequence connection method is given in the figure;

[0071] Fig. 20The timing diagram of the three-phase voltage, stationary reference system voltage, rotating phase angle and synchronous rotating reference system voltage of the three-phase alternating current under another positive sequence connection method is given in the figure;

[0072] Fig.21 This is a structural diagram of a shared green electricity system module in Example 6;

[0073] Fig. 22 for Fig.21 Schematic diagram of the structure of the middle wall-mounted component;

[0074] Fig.23 for Fig. 22 Another perspective of the picture;

[0075] Fig.24 for Fig. 22 The structural diagram of component 2;

[0076] Fig.25 for Fig. 22 The structural diagram of component 1;

[0077] Fig.26 It is a structural schematic diagram of the chassis assembly in Example 6;

[0078] Fig. 27 for Fig.26 Front view of . DETAILED DESCRIPTION

[0079] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0080] See Figure 1 In the case of multi-user power distribution such as apartments, photovoltaic power generation and energy storage systems can be used. A photovoltaic storage system can be added to the grid bus. At the same time, small photovoltaic storage systems such as balcony photovoltaics can be configured for single users. This distribution system can maximize the use of roof and balcony resources to achieve the use of clean energy. The configured system can include:

[0081] The main electricity meter is used to connect the main power supply circuit of the apartment and the grid bus;

[0082] User electricity meter, used to connect each user's load circuit to the main power supply circuit of the apartment;

[0083] User power generation equipment, which is installed at all or part of the users, can be a small photovoltaic storage system such as balcony photovoltaic equipment;

[0084] An independent photovoltaic storage system is used to connect to the main power supply circuit of the apartment; and

[0085] The energy storage system meter is used to connect the photovoltaic storage system to the main power supply circuit of the apartment.

[0086] In the above scheme, one end of the total electricity meter can be connected to the power grid, and the other end serves as the common end of the user electricity meter and the energy storage system electricity meter. The total electricity meter is used to monitor the total power consumption Pload of all users; one end of the energy storage system electricity meter can be connected to the total electricity meter, and the other end is connected to the grid output end of the inverter. The energy storage system electricity meter can be used to measure the power intake and power supply energy of the inverter to the power grid; one end of the user electricity meter is connected to the total electricity meter, and the other end is connected to the user load. The user electricity meter is mainly used to measure the power consumption at the user end.

[0087] In the above scheme, one end of the user load is connected to the user's electricity meter, and the other end is connected to the user's power generation equipment; it can be understood that when the power generation of the user's power generation equipment is greater than the power consumption of the user's load, the corresponding user can feed power to the power grid bus; when the power generation of the user's power generation equipment is less than the power consumption of the user's load, the corresponding user can draw power from the power grid bus.

[0088] In the above scheme, the photovoltaic storage system can perform the following energy scheduling based on the total power consumption Pload collected at the main electricity meter, the power generation power of the photovoltaic storage system Pinv, and the battery chargeable power Pcharger:

[0089] When Pinv>Pload and Pinv-Pload<Pcharger, only the photovoltaic storage system supplies power to the main power supply circuit of the apartment and all the excess energy will be stored in the energy storage battery; that is, the part of the generated power Pinv that is equal to the total power consumption Pload will be fed to the main power supply circuit, and the remaining part of the generated power Pinv will be stored in the energy storage battery;

[0090] When Pinv>Pload and Pinv-Pload>Pcharger, after the photovoltaic storage system supplies power to the main power supply circuit of the apartment, part of the excess energy will be stored in the energy storage battery, and the other part will be fed into the grid bus; that is, the part of the generated power Pinv that is equal to the total power consumption Pload will be fed into the main power supply circuit, the part of the generated power Pinv that is equal to the battery chargeable power Pcharger will be stored in the energy storage battery, and the remaining part of the generated power Pinv will be fed into the grid bus;

[0091] When Pinv<Pload, all the energy will be fed into the main power supply circuit to supply power to users.

[0092] Based on the above scheme, although it is possible to achieve energy sharing of green energy generated by independently set up photovoltaic storage systems in scenarios such as apartments. However, as a multi-user power distribution scenario, the difference between an apartment and a single-user power distribution is that the energy transactions generated by a single user belong to one entity, whether it is taking electricity from the grid or feeding electricity to the grid, and how to use green energy most effectively and maximize the use, there is only one beneficiary. In this scheme, the green energy produced and managed by the photovoltaic storage system will eventually be collected on the main power supply circuit of the apartment, and the user loads of all users will draw electricity from the autonomous power supply circuit. In other words, it cannot distinguish the source of electricity obtained by any user's autonomous power supply circuit. In a multi-user scenario, it is difficult to distinguish how much green energy any user has produced and how much green energy has been used. This results in the inability of this scheme to effectively achieve refined management of green energy usage in a multi-user scenario.

[0093] Example 1

[0094] See Figure 2 This embodiment discloses a green energy sharing system based on a photovoltaic storage system, which provides a new solution for the application of new energy in different environments. This smart energy system is typically used in apartment scenarios but is not limited to such environments.

[0095] The green energy sharing system based on the photovoltaic storage system disclosed in this embodiment has:

[0096] Photovoltaic storage system;

[0097] User power generation system, which is configured at all or part of the users and is used to access the user load circuit;

[0098] Energy routers are configured at each user; see Figure 3 The energy router has a mains input port, a green energy input port and a load output port, wherein the mains input port is used to access the grid bus to form a grid branch, the green energy input port is used to access the photovoltaic storage system to form a green energy branch, and the load output port is used to access the user load circuit to form a load branch; wherein a microcontroller MCU is also provided at the energy router, and the microcontroller MCU is used to realize the on / off control between the load output port and the mains input port and the green energy input port; and

[0099] The system cloud platform is used to generate dispatching instructions based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit. The dispatching instructions are used to control multiple users to access the photovoltaic storage system only through the green energy branch through the energy router; wherein the sum of the power consumption of the load circuits of the multiple users is balanced with the sum of the power generation of the user's power generation system and the power generation of the photovoltaic storage system of the multiple users.

[0100] Based on the above, the green energy sharing system formed is compatible with large photovoltaic storage systems such as photovoltaic storage systems and small power generation systems such as user power generation systems (such as balcony photovoltaic). The scheduling based on the power generation of the photovoltaic storage system, the power generation of the user power generation system and the power consumption of the user's load circuit on the system cloud platform can effectively solve the problems encountered when photovoltaic green energy is applied in apartment scenarios; it can be compatible with small and large photovoltaic systems at the same time, and realize energy monitoring and management in scenarios such as apartments; it can build an energy microgrid for multiple users through green energy branches based on the power generation of the photovoltaic storage system and the power generation of the user's power generation system, and according to the power consumption of the user's load circuit, thereby realizing the sharing of green energy.

[0101] In this embodiment, an energy routing meter can be provided between the green energy input port and the photovoltaic storage system, and the energy routing meter is used to measure the amount of electricity at the green energy branch and upload it to the system cloud platform. This allows the amount of electricity used by a single user from the photovoltaic storage system and the amount of electricity fed into the photovoltaic storage system to be measured, thereby achieving refined management of green energy usage in multi-user scenarios.

[0102] In this embodiment, a user meter can be provided between the mains input port and the grid bus, so that the power used by a single user from the grid bus and the power fed into the grid bus can be measured, which is beneficial to the refined management of energy.

[0103] In addition, the photovoltaic storage system can also be connected to the grid bus through the energy storage system meter or a user's meter, so that the surplus energy at the photovoltaic storage system can also be fed into the grid bus, thereby realizing the utilization rate of green energy.

[0104] In this embodiment, a metering circuit can be provided between the load output port and the user load circuit, and the metering circuit is used to collect the user load power. And send it to the system cloud platform; the system cloud platform uses the user load power As the power consumption of the user's load circuit, the data collection of the power consumption of the user's load circuit is better realized, providing the necessary conditions for subsequent energy scheduling.

[0105] Among them, the metering circuit can include current Hall sensors, voltage sampling circuits (such as the phase voltage sampling circuit described in Example 2), etc., so that real-time current and voltage information can be obtained through the microcontroller MCU to obtain power data.

[0106] In this embodiment, the photovoltaic storage system has photovoltaic panels, inverters and energy storage batteries. The photovoltaic panels are used to convert solar energy into green energy in the form of electrical energy. The inverter can output green energy that meets the current grid parameters based on the DC / AC circuit, can manage the charging and discharging of the energy storage battery based on the DC / DC circuit, can upload relevant operating parameters to the system cloud platform, and can also perform related actions based on the instructions issued by the system cloud platform. This is a method well known to those skilled in the art, and this embodiment only briefly describes it. Among them, the inverter can collect the total power generated by the inverter And the battery rechargeable power of the energy storage battery And the battery can discharge power And send it to the system cloud platform; the system cloud platform uses the total power generation power of the inverter As the power generation of the photovoltaic storage system, the relevant data collection is better realized, providing the necessary conditions for subsequent energy scheduling.

[0107] In this embodiment, the energy router is configured to collect the user power generation power of the user power generation system. And send it to the system cloud platform; the system cloud platform uses the user's power generation As the power generation of the user's power generation system, the collection of relevant data is better realized, providing the necessary conditions for subsequent energy scheduling.

[0108] Among them, the user power generation system can be a small photovoltaic device such as balcony photovoltaic. The power generation data of the user power generation system can be connected to the energy router, which will be forwarded to the inverter in the photovoltaic storage system by the energy router, and then uploaded to the system cloud platform based on the relevant communication protocol. It is understandable that the user power generation system does not require each user to configure it, nor does it limit the number of configurations for each user.

[0109] The green energy sharing system disclosed above is easy to install and modify because the power grid branch of the energy router is only connected in series between each user's electricity meter and the user's load. Due to the existence of the green energy branch, the energy routing meter can realize the statistics of each user's green energy usage data at the photovoltaic storage system, realizing the refined management of the amount of green energy. In addition, since an energy router is added for each user, it can realize intelligent and effective switching between the power grid branch and the green energy branch according to the usage of the user's load. When the user switches to the green energy channel for power supply, an energy microgrid will be formed between the users, and each user can enjoy the benefits of green energy.

[0110] See Figure 2In a green energy sharing system disclosed in the present invention, it can have an energy storage system meter, multiple energy routers, multiple user meters, multiple energy routing meters, multiple user power generation systems, a set of photovoltaic storage systems, a set of system cloud platforms, etc. Among them, the energy storage system meter can be connected to the power grid bus at one end and the other end as the common end of the energy routing meter; the energy router is mainly used to provide two channels to connect to the user load, and can change the power flow direction by switching different channels under certain conditions; the connection method of each user meter is consistent, one end is connected to the power grid bus, and the other end is connected to the mains input port of the corresponding energy router; the connection method of each energy routing meter is consistent, one end is connected to the common end of the energy storage system meter, and the other end is connected to the energy storage system meter of the corresponding energy router; the system cloud platform is only a remote data statistics and command issuance system, which is mainly used to realize the scheduling of the photovoltaic storage system; this is a means well known to those skilled in the art, and this implementation will not be repeated.

[0111] Compared to Figure 1 The scheme shown in Figure 2 The solution disclosed in has the following advantages:

[0112] (1) It is no longer necessary to connect the main power supply circuit to the grid bus, which reduces the complexity of the line and simplifies the construction, especially the difficulty of transformation;

[0113] (2) The energy storage system meter only needs to be connected to the grid bus and no longer needs to be connected to the main power supply circuit, that is, Figure 2 The solution does not require a bus (i.e., main power supply circuit) corresponding to all users; this means that there is no need to consider the influence of the location and current size of the energy storage system meter during the installation process, and there may be no way to effectively perform line transformation in different multi-user scenarios.

[0114] This embodiment Figure 2 In the green energy sharing system disclosed in, the energy storage system meter, user meter and energy routing meter can all exchange data with the photovoltaic storage system, such as the inverter, through methods such as RS485 or CAN communication; the energy router, such as the microcontroller MCU, can be provided with a communication interface, and the energy router can establish communication with the photovoltaic storage system, such as the inverter, through methods such as RS485 or CAN communication. That is, by monitoring power parameters such as user power consumption, safety status data, and environmental data, the scheduling and management of the green energy sharing system can be better achieved. The system cloud platform can receive relevant data and perform actions such as energy scheduling, trend prediction, over-limit warning, and fault alarm.

[0115] Based on the above green energy sharing system, this embodiment further provides a green energy sharing management method based on a photovoltaic storage system, which includes:

[0116] Configure the optical storage system;

[0117] A user power generation system is configured at all or part of the users, and the user power generation system is used to access the user load circuit;

[0118] Energy routers are configured at all users. The energy routers are used to provide a mains input port, a green energy input port and a load output port. The mains input port is used to access the grid bus to form a grid branch, the green energy input port is used to access the photovoltaic storage system to form a green energy branch, and the load output port is used to access the user's load circuit to form a load branch. A microcontroller MCU is also provided at the energy router. The microcontroller MCU is used to realize the on / off control between the load output port and the mains input port and the green energy input port.

[0119] The system cloud platform generates dispatching instructions based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit. The dispatching instructions are used to control multiple users to access the photovoltaic storage system only through the green energy branch through the energy router; wherein the sum of the power consumption of the load circuits of the multiple users is balanced with the sum of the power generation of the user's power generation systems and the sum of the power generation of the photovoltaic storage system.

[0120] Based on the above, the refined management of green energy in multi-user scenarios such as apartments can be better achieved.

[0121] In this embodiment, the system cloud platform can collect the total power generated by the inverter in real time. , the battery chargeable power of the energy storage battery And the battery can discharge power , User load power And user power generation ; Among them, the total power generated by the inverter As the power generation of the photovoltaic storage system, the user's power generation As the power generation of the user's power generation system, the user's load power The amount of electricity used as a user load circuit;

[0122] See Figure 4 , the generation of dispatching instructions based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit by the system cloud platform includes:

[0123] Get the user load power of each user And the corresponding user power generation , the user load power Greater than the user's power generation The corresponding user is classified as a positive user, and the user load power Less than the user's power generation The corresponding user is classified as a negative user; among them, the user load power Power generation with users The difference between the power surplus and the power shortage of the user ,Right now ;

[0124] Total power generation Not less than the battery chargeable power When the first scheduling instruction is generated, the first scheduling instruction is used to select a plurality of positive users and only connect them to the optical storage system, and the plurality of positive users have surplus or shortage power. The sum does not exceed the total power generation Battery power The sum of the power consumption of the photovoltaic storage system to the user side can be better realized;

[0125] Total power generation When the power is less than the battery chargeable power, a second scheduling instruction is generated; the second scheduling instruction is used to select multiple negative value users and only connect them to the photovoltaic storage system, and the user surplus or shortage power of the multiple negative value users The absolute value of the sum does not exceed the battery charge capacity Total power generation The difference between the power generation system and the photovoltaic storage system can be better realized;

[0126] Based on the total power of positive users who are not connected to the photovoltaic storage system and the total power of negative users who are not connected to the photovoltaic storage system, a third scheduling instruction is generated; the third scheduling instruction is used to connect all users of the type with smaller total power among the two types of users to the photovoltaic storage system only, and control the type of users with larger total power among the two types of users to partially connect to the photovoltaic storage system only; wherein, the total power of different types of users connected to the photovoltaic storage system is kept basically consistent; thereby, the sharing of green energy among users can be better realized, and the construction of energy microgrids can be realized;

[0127] Generate a fourth dispatch instruction, which is used to connect the user only to the power grid bus; thereby taking into account the absorption and supply capabilities of the photovoltaic storage system and ensuring the stability and safety of the user's electricity consumption.

[0128] Through the above, it is possible to carry out overall management based on the electricity consumption of all users. The core is to ensure that the photovoltaic storage system does not draw electricity from the power grid or feed electricity into the power grid. Specifically, the photovoltaic storage system can provide or absorb the shortage or surplus electricity of each user. For the part that the photovoltaic storage system cannot provide or absorb, it can be provided through the power grid or the power generation power of the user's power generation system can be limited.

[0129] It can be understood that when the green energy sharing system disclosed in the present invention is actually used, the user's access to and disconnection from the photovoltaic storage system is a dynamic scheduling process.

[0130] Among them, the system cloud platform can be based on the total power generation of the inverter , Battery can discharge power And the surplus and shortage power of all users connected to the PV storage system , real-time acquisition of available power of the photovoltaic storage system ;in, ; Indicates the surplus or shortage power of all users connected to the PV storage system sum;

[0131] System cloud platform based on the total power generated by the inverter , Battery rechargeable power And the surplus and shortage power of all users connected to the PV storage system , real-time acquisition of the absorbable power of the photovoltaic storage system ;in, ;

[0132] It is understandable that for users who are not equipped with user power generation systems, , the power consumption of the power grid is recorded as , the power absorbed by the grid is recorded as The system cloud platform generates dispatching instructions based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit, and also has the following dynamic adjustment process for a single user,

[0133] exist and When, based on the first scheduling instruction, the microcontroller MCU controls the grid branch at the energy router to remain disconnected and the green energy branch to remain connected; at this time, the corresponding user needs to buy electricity from outside and the electricity purchase channel is the photovoltaic storage system, and the power flow direction is from the user's power generation system to the user's load circuit and from the photovoltaic storage system to the user's load circuit via the green energy branch. , , the purchased power is ; At this time, the corresponding users can enjoy shared green energy;

[0134] For any user, and When the power grid branch at the energy router is disconnected and the green energy branch is connected based on the second scheduling instruction, the microcontroller MCU controls the energy router to keep the power grid branch disconnected and the green energy branch connected; at this time, the corresponding user can sell energy to the photovoltaic storage system, and the power flow is from the user's power generation system to the user's load circuit and is stored in the photovoltaic storage system through the green energy branch. , ; At this time, users can share excess green energy and gain benefits;

[0135] For any user, When the power grid branch at the energy router is turned on and the green energy branch is turned off based on the fourth dispatch instruction, the microcontroller MCU controls the energy router to keep the power grid branch turned on and the green energy branch turned off. At this time, the corresponding user does not need to buy or sell electricity, and the power flow is from the user's power generation system to the user's load. , ;

[0136] For any user, and When, based on the fourth dispatch instruction, the microcontroller MCU controls the grid branch at the energy router to remain on and the green energy branch to remain disconnected; at this time, if the grid bus allows electric energy to be fed in, the power flow can be from the user's power generation system to the user's load circuit and fed into the grid bus through the grid branch, P-grid=Pgreen-Puse, and the corresponding user can obtain certain benefits based on the policy standards of the region; if the grid bus does not allow electric energy to be fed in, the power flow is from the user's power generation system to the user's load circuit, and the user's power generation system can be controlled to limit its power generation power;

[0137] exist and Based on the fourth dispatch instruction, the microcontroller MCU controls the grid branch at the energy router to remain on and the green energy branch to remain off. At this time, the corresponding user needs to buy electricity from outside and the electricity purchase channel is the grid bus. The power flow direction is from the user's power generation system to the user's load circuit and the grid bus via the grid branch to the user's load circuit. .

[0138] In the above, the first to fourth scheduling instructions are essentially switching instructions issued by the system cloud platform to the microcontroller MCU. The switching instructions can be used to control the switching of the power grid branch and the green energy branch at the energy router through the microcontroller MCU; when the microcontroller MCU receives the switching instruction, it can generate corresponding action instructions to realize switching between different power supply branches.

[0139] See Figure 5In another green energy sharing system disclosed in this embodiment, if the independently set photovoltaic storage system belongs to a certain user, the energy storage system meter can be cancelled and the photovoltaic storage system can be directly connected to the user's meter to which it belongs.

[0140] Example 2

[0141] It can be known that the energy router, as the core component of the green energy sharing system in Example 1, is mainly responsible for the switching of two power supply branches, namely the power grid branch and the green energy branch. According to the actual working conditions listed in Example 1, the energy router has two states of working in a separate power grid branch and working in a separate green energy branch. Therefore, the energy router has at least two state switching requirements: switching from the power grid branch to the green energy branch and switching from the green energy branch to the power grid branch.

[0142] In order to ensure that the power supply at the load branch is not interrupted when the different power supply branches of the energy router are switched, the present embodiment provides an energy router, which is essentially a distribution device module that can realize the intelligent switching function between green energy power supply (photovoltaic storage system) and municipal power supply (grid bus).

[0143] See Figure 6 , an energy router provided in this embodiment has:

[0144] A green energy input port, which is used to connect to the green energy power supply system to form a green energy branch, and is connected to the load output port through the first relay group;

[0145] A mains input port, which is used to connect to the power supply system of the power grid to form a power grid branch, and is connected to the load output port through the second relay group;

[0146] A load output port, which is used to connect to the user's load circuit to form a load branch, and the load branch is powered by a green energy branch and / or a power grid branch; wherein the green energy branch and the power grid branch are two different power supply branches; and

[0147] A microcontroller MCU is used to control the on / off of a first relay group and a second relay group; wherein, when switching between different power supply branches, the microcontroller MCU generates corresponding action instructions based on the received switching instructions to realize the on / off control of the first relay group and the second relay group; wherein, the action instructions include,

[0148] The microcontroller MCU generates a first instruction when detecting that the input voltages of the mains input port and the green energy input port have the same phase sequence and phase, and the first instruction is used to control the first relay group or the second relay group at the corresponding power supply branch to be switched to a connection state; and

[0149] The microcontroller MCU generates a second instruction when detecting that the corresponding power supply branch to be switched to enters the power supply state. The second instruction is used to control the second relay group or the first relay group at the corresponding power supply branch to be cut off to switch to the circuit-breaking state.

[0150] An energy router disclosed in the present invention can better realize the coupling power supply of the green energy power supply system and the power grid power supply system to the user's load circuit, and can realize the "0" interruption switching working state of the energy router through the control of the first relay group and the second relay group by the first instruction and the second instruction issued by the microcontroller MCU in sequence. That is, it can be realized that in the process of switching from the power grid power supply system to the green energy power supply system, the power supply at the load output port will not be interrupted, thereby realizing the non-interruption intelligent switching of the energy input port (i.e., the green energy input port and the mains input port).

[0151] It can be understood that when switching from the power grid branch to the green energy branch for power supply, when both the mains input port and the green energy input port have power output, based on, for example, the control instructions issued by the system cloud platform, the microcontroller MCU generates a first instruction when it detects that the input voltages of the mains input port and the green energy input port have consistent phase sequence and phase, and the first instruction is used to control the first relay group to switch to the on state, and the microcontroller MCU generates a second instruction when it detects that the power output of the green energy input port is normal, and the second instruction is used to control the second relay group to switch to the off state. When switching from the green energy branch to the power grid branch for power supply, the same operation can be performed, which will not be repeated here.

[0152] The corresponding power supply branch to be switched to enters the power supply state when all first relays or all second relays in the first relay group or the second relay group at the corresponding power supply branch to be switched to are in the on state.

[0153] That is, although the switching instructions of the energy router, such as power supply branch switching, are issued by external devices such as the system cloud platform, the microcontroller MCU can implement the issuance of action instructions based on its independent detection mechanism, thereby better realizing the autonomous control of the energy router based on the current actual working conditions.

[0154] See Figure 7 Corresponding phase voltage sampling circuits are provided at the green energy input port and the mains input port. The corresponding phase voltage sampling circuits are used to realize the phase voltage collection of each phase input at the green energy input port and the mains input port; the microcontroller MCU judges whether the input voltages of the mains input port and the green energy input port have consistent phase sequence and phase based on the phase voltage data collected by the phase voltage sampling circuit.

[0155] Through the above, it can be better ensured that when switching the power supply branch, the power supply branch to be switched to will not have a phase failure fault and can have a consistent phase sequence and phase with the power supply branch to be cut off.

[0156] The first relay group has a plurality of first relays corresponding to each phase input, and the second relay group has a plurality of second relays corresponding to each phase input, and the plurality of first relays and the plurality of second relays are both controlled on and off based on independent relay control circuits, so that each relay can be controlled individually.

[0157] Among them, the green energy input port and the mains input port are both provided with a zero-crossing detection circuit, which is used to realize the zero-crossing point detection of each phase input at the green energy input port and the mains input port; the microcontroller MCU is used to realize the multiple first relays and the multiple second relays to perform on and off actions at the zero-crossing point based on the zero-crossing point detection. In this way, the arcing effect of the relay on and off can be better reduced, which is conducive to improving the service life of the relay.

[0158] Wherein, a corresponding phase voltage sampling circuit is also provided at the load output port, and the corresponding phase voltage sampling circuit is used to realize the phase voltage collection of each phase input at the load output port;

[0159] The microcontroller MCU is used to issue a self-checking instruction to obtain the closing action time and the closing action time of each first relay and each second relay, and the microcontroller MCU is used to delay the issuance of an action instruction based on the voltage cycle of the corresponding phase input, the corresponding closing action time and the corresponding closing action time. Therefore, the on and off control of each relay at the zero crossing point can be realized more accurately.

[0160] In this embodiment, the first relay group is connected between the green energy input port and the load output port using a normally open contact, and the relay control circuit of the first relay group is powered by the green energy power supply system.

[0161] This method allows the first relay group to naturally maintain an open circuit state when the green energy power supply system has no power output, thereby achieving a "0" loss working state of an energy router disclosed in the present invention and ensuring efficient power supply when the power grid power supply system is the only power supply.

[0162] Furthermore, the second relay group can be connected between the mains input port and the load output port using a normally closed contact. This allows the second relay group to operate with low power consumption when the grid power supply system is the only power supply, thereby further improving the power supply efficiency in the "0" loss working state.

[0163] It can be understood that the relay control circuit of the second relay group can be powered by a green energy power supply system or a grid power supply system.

[0164] In this embodiment, when the microcontroller MCU detects that the user's load circuit is abnormal, it can generate a third instruction, and the third instruction can be used to keep the first relay group and the second relay group in an open circuit state. This allows an energy router disclosed in the present invention to switch to a bypass working state when an abnormal working condition such as overload, overcurrent, and short circuit is detected in the user's load circuit, and the electrical connection between the energy input port (i.e., the green energy input port and the mains input port) and the load output port is actively disconnected, thereby protecting the safety of electrical equipment.

[0165] That is, an energy router disclosed in the present invention can adopt a relay topology with three working states. The "0" loss working state can ensure high efficiency when the AC power is used alone, the "0" interruption switching working state can ensure uninterrupted intelligent switching of the energy input port, and the bypass working state can be used to protect the safety of electrical equipment.

[0166] See Figure 8 In actual use, an energy router of this embodiment can complete the switching between different power supply branches based on the following steps:

[0167] Based on the self-check instruction issued by the microcontroller MCU, control the plurality of first relays and the plurality of second relays to perform a self-check action;

[0168] Based on the self-checking action of each first relay and each second relay, obtaining the action time of each first relay and each second relay, the action time including the closing action time and the closing action time;

[0169] Based on the phase voltage sampling circuits at the green energy input port and the mains input port, the phase sequence and phase of the voltage input to the green energy input port are detected;

[0170] When the microcontroller MCU detects that the input voltages of the mains input port and the green energy input port have consistent phase sequence and phase and receives a switching instruction, it issues a corresponding action instruction based on the voltage cycle of each phase and the action time of the corresponding first relay or second relay.

[0171] Through the above, it can be ensured that when the power supply branch is switched, the input voltages of the mains input port and the green energy input port can have consistent phase sequence and phase and can eliminate problems such as phase loss and relay failure, so the realization of the "0" interruption intelligent switching function can be better guaranteed. And by considering the action time of each first relay and each second relay, it can be ensured that the first relay and the second relay can accurately perform the on and off actions.

[0172] Among them, the self-test instruction issued by the microcontroller MCU is actually an instruction for controlling a single relay to execute on and off. Since the green energy input port, the mains input port and the load output port are equipped with corresponding phase voltage sampling circuits, after each first relay or second relay executes the on and off action, it is only necessary to detect whether the voltage of the corresponding phase of the load output port is on or off to determine whether the corresponding relay is faulty. Among them, when any first relay or second relay fails, the microcontroller MCU generates an alarm signal and can report it to the system cloud platform.

[0173] During the self-test process of the first relay or the second relay, the microcontroller MCU can obtain the closing action time and the closing action time of the first relay or the second relay by recording the issuance time of the self-test instruction and the upload time of the signal collected by the phase voltage sampling circuit of the corresponding phase of the load output port; that is, the time from the issuance of the self-test instruction by the microcontroller MCU to the receipt of the signal collected by the phase voltage sampling circuit of the corresponding phase of the port can be used as the corresponding action time; it can be understood that the action time collected based on this method includes the command transmission time of the relay and the actual delay time of the on and off actions.

[0174] Among them, the periodic root mean square of the voltage of the green energy input port can be used as the basis for phase loss judgment, and the positive and negative connection methods of the green energy input port and the mains input port can be judged based on the positive and negative of the d-axis voltage component in the synchronous rotating coordinate system. Among them, when the microcontroller MCU detects that there is a phase loss or inconsistent phase sequence at the green energy input port, the fault type and the location of the branch where the phase sequence detection failed can be reported to the system cloud platform.

[0175] Wherein, each first relay and each second relay can be controlled to perform self-checking actions multiple times based on the microcontroller MCU, and the average time of performing the corresponding action is used as the action time of the corresponding action. Therefore, the collected action time can be accurately collected.

[0176] In this embodiment, both the green energy input port and the mains input port are provided with zero-crossing detection circuits, and when the microcontroller MCU generates an action instruction, it can be executed based on the following steps:

[0177] After receiving the switching instruction, the microcontroller MCU detects the zero-crossing point of each phase of the green energy input port and the mains input port through the zero-crossing detection circuit;

[0178] After detecting the zero-crossing point of the corresponding phase, the microcontroller MCU obtains the voltage cycle of the phase input;

[0179] The microcontroller MCU determines the sending time of the action instruction based on the voltage cycle of the phase input and the action time of the corresponding first relay or second relay, and sends the action instruction when the sending time arrives.

[0180] Through the above, the on and off actions of the relay can be preferably achieved at the zero-crossing point, thereby preferably reducing the arcing effect of the relay at the moment of on and off, and achieving long-life protection of the relay.

[0181] Specifically, by performing multiple on-off operations on the relays of the green energy input port and the AC power input port during the self-test phase, and combining the voltage sampling data of the load output port to obtain the average action time of the relays at different input ports in real time (including the average closing and closing time), the problem of different action delay times of the relays due to the manufacturing process can be effectively solved; at the same time, by combining the real-time cycle of the AC power obtained through the zero-crossing detection signal, it can be ensured that the relay can complete precise on-off actions at the zero-crossing point.

[0182] It is understandable that the zero-crossing detection circuit can be implemented using, for example, a comparator circuit, so the zero-crossing point is reflected as a rising edge or a falling edge in the output waveform of the comparator circuit. In a specific embodiment, the zero-crossing point of the half-cycle of the corresponding phase AC can be reflected as a rising edge, and the zero-crossing point of the full cycle can be reflected as a falling edge; therefore, when performing the above operation, the microcontroller MCU can determine whether the falling edge of the output signal of the zero-crossing detection circuit is detected after receiving the switching instruction. If not, it will continue to monitor. If the falling edge is detected, the AC cycle of the corresponding phase can be calculated based on the falling edge (such as the AC cycle can be calculated based on the interval between two falling edges, the AC cycle can be calculated based on the sampling frequency, etc. This is a conventional technology and will not be repeated in this embodiment); thereafter, the microcontroller MCU can The sending time of the action instruction is calculated based on the AC cycle of the corresponding phase and the action time of the corresponding relay; for example, the closing action time of a certain relay is t1, the closing action time is t2, and the AC cycle of the corresponding phase is T, then: if the current action instruction is used to control the closing of the relay, the required sending time t3 of the action instruction can be (N*T-t1); if the current action instruction is used to control the shutdown of the relay, the required sending time t4 of the action instruction can be (N*T-t2); wherein N is a positive integer; the sending time t3 and the sending time t4 can both be based on the currently detected falling edge as the starting time. It can be understood that the first instruction and the second instruction in the action instruction and the third instruction mentioned above can all be executed based on this method. Therefore, it can better ensure that the relevant relay can perform the on and off actions when the corresponding phase is at the zero crossing point.

[0183] Combination Figure 6 and 7The three-phase energy router provided in this embodiment is a specific embodiment. The load output port has L1, L2, L3 and N terminals, the green energy input port has GL1, GL2, GL3 and GN terminals, and the mains input port has OL1, OL2, OL3 and ON terminals; the first relay group includes first relays RLYGL1, RLYGL2, RLYGL3 and RLYGN, and the second relay group includes second relays RLYOL1, RLYOL2, RLYOL3 and RLYON; wherein,

[0184] The green energy input port GL1 is connected to one end of the main circuit of the first relay RLYGL1, the other end of the main circuit of the first relay RLYGL1 is connected to the load output port L1 and one end of the main circuit of the second relay RLYOL1, and the other end of the main circuit of the second relay RLYOL1 is connected to the mains input port OL1; wherein, the first relay RLYGL1 adopts a normally open contact, the control circuit of the first relay RLYGL1 is connected to a +12V power supply and a relay control circuit, and the signal control end of the relay control circuit of the first relay RLYGL1 is the RLY_Power_GL1 end; wherein, the second relay RLYOL1 adopts a normally closed contact, the control circuit of the second relay RLYOL1 is connected to a +12V power supply and a relay control circuit, and the signal control end of the relay control circuit of the second relay RLYOL1 is the RLY_Power_OL1 end;

[0185] The green energy input port GL2 is connected to one end of the main circuit of the first relay RLYGL2, the other end of the main circuit of the first relay RLYGL2 is connected to the load output port L2 and one end of the main circuit of the second relay RLYOL2, and the other end of the main circuit of the second relay RLYOL2 is connected to the mains input port OL2; wherein, the first relay RLYGL2 adopts a normally open contact, the control circuit of the first relay RLYGL2 is connected to the +12V power supply and the relay control circuit, and the signal control end of the relay control circuit of the first relay RLYGL2 is the RLY_Power_GL2 end; wherein, the second relay RLYOL2 adopts a normally closed contact, the control circuit of the second relay RLYOL2 is connected to the +12V power supply and the relay control circuit, and the signal control end of the relay control circuit of the second relay RLYOL2 is the RLY_Power_OL2 end;

[0186] The green energy input port GL3 is connected to one end of the main circuit of the first relay RLYGL3, the other end of the main circuit of the first relay RLYGL3 is connected to the load output port L3 and one end of the main circuit of the second relay RLYOL3, and the other end of the main circuit of the second relay RLYOL3 is connected to the mains input port OL3; wherein, the first relay RLYGL3 adopts a normally open contact, the control circuit of the first relay RLYGL3 is connected to the +12V power supply and the relay control circuit, and the signal control end of the relay control circuit of the first relay RLYGL3 is the RLY_Power_GL3 end; wherein, the second relay RLYOL3 adopts a normally closed contact, the control circuit of the second relay RLYOL3 is connected to the +12V power supply and the relay control circuit, and the signal control end of the relay control circuit of the second relay RLYOL3 is the RLY_Power_OL3 end;

[0187] The green energy input port GN is connected to one end of the main circuit of the first relay RLYGN, the other end of the main circuit of the first relay RLYGN is connected to the load output port N and one end of the main circuit of the second relay RLYON, and the other end of the main circuit of the second relay RLYON is connected to the mains input port ON; wherein, the first relay RLYGN adopts a normally open contact, the control circuit of the first relay RLYGN is connected to the +12V power supply and the relay control circuit, and the signal control end of the relay control circuit of the first relay RLYGN is the RLY_Power_GN end; wherein, the second relay RLYON adopts a normally closed contact, the control circuit of the second relay RLYON is connected to the +12V power supply and the relay control circuit, and the signal control end of the relay control circuit of the second relay RLYON is the RLY_Power_ON end.

[0188] Among them, the green energy input port is a three-phase power input compatible with single-phase power input. The green energy power supply system can be a green energy power supply system based on renewable energy such as photovoltaics and wind power, and it can also be a mains power interface; the mains power input port is a three-phase mains power interface compatible with a single-phase mains power interface; the load output port is a three-phase load interface compatible with a single-phase load.

[0189] In this embodiment, the zero-crossing detection circuit and the phase voltage sampling circuit can be connected between any phase live wire and neutral wire.

[0190] It can be understood that an energy router of the present embodiment can also be compatible with a single-phase power supply system, for example, by keeping the same phase relay connecting the energy input port and the load output port working, such as connecting GL2 and GL3 of the green energy input port, OL2 and OL3 of the AC power input port, and L2 and L3 of the load output port.

[0191] Of course, in order to save costs, an energy router disclosed in the present invention can also adopt Fig. 9 and 10 The single-phase topology shown in .

[0192] Example 3

[0193] In the energy router disclosed in Example 2, for example, the relay is a key module, and the life and control of the relay will affect the stability and reliability of the energy router. In order to reduce the arcing effect of the relay at the moment of switching on and off and realize the long life protection of the relay, this embodiment discloses a zero-crossing detection circuit based on high-precision voltage sampling. Among them, the zero-crossing point refers to the moment or position when the sinusoidal AC voltage or current changes to zero voltage or zero current (the positive half-cycle decreases from positive to zero or the negative half-cycle increases from negative to zero); it can be understood that the zero-crossing point of the present invention is only for AC voltage.

[0194] It is worth mentioning that in order to ensure that the relay is turned on and off at the zero-crossing point, the existing technical solutions are as follows: one is the thyristor switch, which uses a thyristor switch instead of a relay, or uses the thyristor switch and the relay in parallel, and controls the on-off timing of the two to realize the opening and closing of the relay under zero voltage difference. However, due to the shortcomings of mis-conduction and mis-shutdown of the thyristor switch, the reliability of this solution is low; the second is the zero-crossing detection circuit, which combines the zero-crossing detection circuit with the microcontroller MCU to enable the relay to complete the on-off operation at the voltage zero crossing, but most of the detection circuits use a simple form of resistors and optocouplers in series, which leads to inaccurate detection.

[0195] The zero-crossing detection circuit disclosed in this embodiment is arranged at the green energy input port and the mains input port, and can integrate the phase voltage sampling circuit and the zero-crossing detection circuit. It can greatly improve the accuracy of zero-crossing sampling in view of the low detection accuracy of the current zero-crossing detection circuit in the form of a resistor and an optical coupler in series, and the problem of easy jitter and weak anti-interference ability of the zero-crossing detection circuit in the form of an operational amplifier comparator and a resistor voltage divider circuit in series.

[0196] See Fig.11 , is a zero-crossing detection circuit based on high-precision voltage sampling disclosed in this embodiment, which has:

[0197] A phase voltage sampling circuit constructed based on the first operational amplifier U1A, the phase voltage sampling circuit performs sampling and output based on the first reference voltage value, the voltage of the single-phase live wire and the voltage of the neutral wire, and the sampling output of the phase voltage sampling circuit is the sum of a set multiple of the difference between the voltage of the single-phase live wire and the voltage of the neutral wire and the first reference voltage value; and

[0198] A zero-crossing detection circuit constructed based on the second operational amplifier U2A, the zero-crossing detection circuit is used to compare the sampled output of the phase voltage sampling circuit with the second reference voltage value and output a zero-crossing signal;

[0199] The first reference voltage value and the second reference voltage value have the same value (both are +1.5V in this embodiment).

[0200] Based on the above, the zero-crossing detection circuit disclosed in the present invention can integrate the phase voltage sampling link and the zero-crossing detection link, so that the circuit complexity can be simplified; wherein, the output end of the phase voltage sampling circuit can output the phase voltage acquisition signal, and the output end of the zero-crossing detection circuit can output the zero-crossing detection signal. The zero-crossing detection circuit disclosed in the present invention can perform zero-crossing detection based on the output of the phase voltage sampling circuit, and through the first operational amplifier U1A and the first reference voltage value, it can avoid the reduction of detection accuracy caused by the voltage of the corresponding phase fluctuating at the zero-crossing point.

[0201] Among them, the positive input terminal of the first operational amplifier U1A samples the voltage of the neutral line through the first processing circuit, and the negative input terminal of the first operational amplifier U1A samples the voltage of the single-phase live line through the second processing circuit; the first processing circuit has a first capacitor C1 for serially connecting the neutral line, and the second processing circuit has a second capacitor C2 for serially connecting the single-phase live line. The first capacitor C1 and the second capacitor C2 can be used as DC blocking capacitors to isolate and filter the DC signal in the input AC signal, thereby better improving the sampling output accuracy of the phase voltage sampling circuit, facilitating the improvement of the accuracy of zero-crossing point detection, and especially providing favorable conditions for the execution of coordinate transformation (stationary coordinate system and synchronous rotating coordinate system) in the subsequent phase sequence detection and control stage.

[0202] The first processing circuit includes a first resistor connected in series with the first capacitor C1, the second processing circuit includes a second resistor connected in series with the second capacitor C2, and a feedback resistor R16 is connected in series between the output end of the first operational amplifier U1A and the inverting input end of the first operational amplifier U1A; the first resistor and the second resistor have the same resistance value, and the resistance value of the feedback resistor R16 is much smaller than the resistance value of the second resistor. This enables the feedback resistor R16 and the second resistor to form a proportional output circuit, and the first resistor can act as a balancing resistor, thereby better realizing the acquisition and output of the phase voltage.

[0203] The first resistor is formed by connecting a plurality of resistors in series (resistors R1-R7 in this embodiment), and the second resistor is formed by connecting a plurality of resistors in series (resistors R9-R15 in this embodiment). This facilitates implementation.

[0204] That is, the sampling output of the sampling terminal G_L1N_VOL of the first operational amplifier U1A The difference between the voltage of the single-phase live wire and the voltage of the neutral wire Has the following relationship,

[0205]

[0206] The first operational amplifier U1A inputs the first reference voltage value through the reference voltage circuit, and the reference voltage circuit includes a resistor R8 and a capacitor C3 connected in parallel, one end of the resistor R8 and the capacitor C3 are connected to the ground terminal at the same time, and the other end of the resistor R8 and the capacitor C3 inputs the first reference voltage value, thereby preferably realizing the addition of the first reference voltage value.

[0207] The positive power input terminal of the first operational amplifier U1A is connected to a +5V voltage and is grounded through a capacitor C5 , and the negative power input terminal of the first operational amplifier U1A is grounded.

[0208] The output terminal of the first operational amplifier U1A is connected to the output resistor R17, and the output resistor R17 and the sampling terminal G_L1N_VOL are grounded via a capacitor C6, thereby achieving the output of the phase voltage acquisition signal.

[0209] A capacitor C4 is also connected in parallel to the feedback resistor R16.

[0210] In this embodiment, the inverting input terminal of the second operational amplifier U2A is connected to the sampling output of the phase voltage sampling circuit, and the non-inverting input terminal of the second operational amplifier U2A is connected to the second reference voltage value, thereby preferably achieving an increase in the second reference voltage value.

[0211] The inverting input terminal of the second operational amplifier U2A is connected to the sampling output of the sampling circuit through the resistor R18, and the inverting input terminal of the second operational amplifier U2A is also grounded through the capacitor C7 and the diode D1.

[0212] Among them, the non-inverting input terminal of the second operational amplifier U2A is connected to the second reference voltage value through the capacitor C8 and the resistor R19 connected in parallel; the diode D2 is connected between the output terminal and the non-inverting input terminal of the second operational amplifier U2A, and the resistor R20 is also connected in series at the diode D2. Based on the above, the capacitor C8, the resistor R19, the resistor R20 and the diode D2 can constitute a hysteresis link, so as to ensure that the output of the zero-crossing detection circuit is not affected by the fluctuation of the AC voltage signal at the zero-crossing point, thereby improving the accuracy and anti-interference performance of the zero-crossing detection. In addition, by utilizing the forward conduction characteristic of the diode D2, the second reference voltage value can form two different thresholds at the non-inverting input terminal of the second operational amplifier U2A (that is, when there is no signal output at the output terminal of the second operational amplifier U2A, the threshold is the second reference voltage value; when there is a signal output at the output terminal of the second operational amplifier U2A, the threshold is the second reference voltage value minus the conduction voltage of the diode D2), and the two different thresholds can be switched at the moment when the zero-crossing detection signal flips, thereby reducing the influence of the fluctuation of the AC voltage signal and effectively improving the accuracy of zero-crossing detection.

[0213] See Fig.12 and 13 , when there is no hysteresis link, the output of the zero-crossing detection circuit has obvious and large fluctuations at both the rising and falling edges.

[0214] In this embodiment, the output terminal of the second operational amplifier U2A is connected to a pull-up voltage (+3.3V in this embodiment), thereby preferably realizing the waveform output of the zero-crossing detection signal. That is, the microcontroller MCU can use the moment when the zero-crossing signal output terminal G_L1N_F jumps from a high level (3.3V) to a low level (0V) as the zero-crossing point.

[0215] The output end of the second operational amplifier U2A is connected to the pull-up voltage through the resistor R22, and the output end of the second operational amplifier U2A is connected in series with the resistor R21 to form the zero-crossing output end GRID_L1N_F, and the zero-crossing output end GRID_L1N_F is grounded through the capacitor C10.

[0216] The positive power input terminal of the second operational amplifier U2A is connected to a +5V voltage and is grounded through a capacitor C9; the negative power input terminal of the second operational amplifier U2A is grounded.

[0217] As a specific embodiment, the model of the first operational amplifier U1A can be TLV9064IPWR, and the model of the second operational amplifier U2A can be LM2903DR; the voltage values ​​of the first reference voltage value and the second reference voltage value can both be +1.5V; the first capacitor C1 and the second capacitor C2 can both be 1812 ceramic capacitors with a withstand voltage of 2KV and a capacitance of 10nF; the resistance values ​​of the resistors R1-R6 and the resistors R9-R14 are all 1 megohm, The resistance values ​​of resistors R7 and R15 are both 49.9 kilohms, the resistance value of feedback resistor R16 is 20 kilohms; the resistance value of resistor R8 is 20 kilohms, the capacitance value of capacitor C3 is 1nF (1nF / 50V / 0603); the capacitance value of capacitor C5 is 100nF (100nF / 50V / 0603); the resistance value of output resistor R17 is 100 ohms (100ohm / 0603), the capacitance value of capacitor C6 is 10nF (10nF / 50V / 06 03); the capacitance value of capacitor C4 is 1nF (1nF / 50V / 0603); the capacitance value of capacitor C9 is 100nF (100nF / 50V / 0603); the resistance value of resistor R18 is 4.99 kilohms (4.99K / 0603), the capacitance value of capacitor C7 is 10nF (10nF / 50V / 0603), the model of diode D1 is BAT43W / SOD-123; the capacitance value of capacitor C8 is 1nF (1nF / 50V / 0603), the resistance of resistor R19 is 5.1 kilo ohms (5.1K / 0603); the model of diode D2 is BAT43W / SOD-123, the resistance of resistor R20 is 20 kilo ohms (20K / 0603); the resistance of resistor R21 is 499 ohms (499ohm / 0603), the resistance of resistor R22 is 5.1 kilo ohms (5.1K / 0603), and the capacitance of capacitor C10 is 10nF (10nF / 50V / 0603).

[0218] It can be understood that in this embodiment, only the first phase line GL1 and the neutral line GN of the green energy input port are taken as an example to specifically illustrate the disclosed zero-crossing detection circuit based on high-precision voltage sampling, and the zero-crossing detection circuits of the green energy input port and the remaining phases of the mains input port are similar.

[0219] Example 4

[0220] See Fig.14 This embodiment provides a relay control circuit, which can be used to drive the first relay or the second relay in Example 2.

[0221] A relay control circuit provided in this embodiment takes the first relay RLYGL1 at the green energy input port GL1 as an example, and the rest of the analysis is similar. One end of the control coil of the first relay RLYGL1 is respectively connected to one end of the capacitor C11, the cathode of the rectifier diode D3 and the 12V voltage, and the other end of the capacitor C11 is connected to the ground; the other end of the control coil of the first relay RLYGL1 is respectively connected to the anode of the rectifier diode D3 and the third pin of the MOSFET device Q1; the second pin of the MOSFET device Q1 is respectively connected to one end of the resistor R24, one end of the capacitor C12 and the ground; the first pin of the MOSFET device Q1 is respectively connected to the other end of the resistor R24, the other end of the capacitor C12 and one end of the resistor R23; the other end of the resistor R23 is connected to the relay control signal RLY_Power_L1.

[0222] Example 5

[0223] In order to realize the "0" interruption switching working state of the energy router in Example 2, it is necessary to ensure that there is no phase loss or phase sequence inconsistency when switching the power supply branch. Therefore, this embodiment provides a phase loss and phase sequence monitoring method, which can be preferably applied to the energy router in Example 2. Among them, phase loss monitoring is realized based on the root mean square, and phase sequence monitoring is realized based on the synchronous rotating coordinate system.

[0224] See Fig.15 When a phase loss and phase sequence monitoring method of this embodiment is applied to phase loss and phase sequence monitoring of a three-phase system, it can have the following steps:

[0225] Based on the phase voltage sampling circuit and zero-crossing detection circuit at the green energy input port and the mains input port, N sampling voltages of each phase output of the green energy input port and the mains input port between two adjacent full-cycle zero-crossing points (falling edges) are obtained. ;

[0226] The microcontroller MCU is based on the N sampled voltages obtained Get the RMS voltage of each phase , the RMS voltage of each phase at the same input port (green energy input port or mains input port) Compare and compare the RMS voltage of any phase at the same input port The RMS voltage of the remaining phases When the difference between the input and output ports exceeds a first set threshold, it is determined that the input port (green energy input port or mains power input port) has a phase loss;

[0227] When there is no phase loss at the green energy input port and the mains input port, the d-axis component and the rotation phase angle of the green energy input port and the mains input port are obtained based on the software phase-locked loop;

[0228] The microcontroller MCU determines whether the phase sequence of the green energy input port and the mains input port is consistent based on the positive and negative values ​​of the d-axis components of the green energy input port and the mains input port; wherein, if the d-axis components of the green energy input port and the mains input port have the same positive and negative values, the phase sequence of the green energy input port and the mains input port is consistent, otherwise, they are inconsistent;

[0229] The microcontroller MCU determines whether the difference in the rotation phase angles of the green energy input port and the mains input port exceeds a set second threshold value. If not, the phases of the green energy input port and the mains input port are consistent, otherwise they are inconsistent.

[0230] In the above, the problem of misjudgment of phase loss caused by inaccurate sampling can be effectively solved by performing periodic RMS on the phase voltage, which is more accurate than the phase loss judgment by directly comparing the voltage sampling data; similarly, the phase sequence monitoring method based on the synchronous rotating coordinate system completes the conversion of AC signal to DC signal through the software phase-locked loop, thereby improving the accuracy of phase sequence detection. According to the RMS calculation formula, when a phase loss occurs, even if there is a slight error in the sampling, the RMS calculation result of the phase will still be significantly smaller than the RMS of the other phase voltages without phase loss, so this method can effectively solve the problem of phase loss judgment. Similarly, this method is also applicable to single-phase systems. The above method only performs phase sequence monitoring under the premise of no phase loss, which can avoid unnecessary monitoring operations.

[0231] In the phase loss and phase sequence monitoring method of this embodiment, after the orientation of the d-axis voltage in the synchronous rotating coordinate system is completed by adding a software phase-locked loop, the positive and negative d-axis voltage components of the green energy and the mains input ports are compared as the basis for judging the phase sequence of the energy input port. At the same time, the convergence speed of the software phase-locked loop can be accelerated.

[0232] See Fig.16, which is a schematic diagram of the block diagram of the software phase-locked loop used in this embodiment; in the software phase-locked loop, the stationary coordinate system transformation and synchronous rotation synchronous system transformation of the three-phase voltage of the green energy input port and the mains input port can be completed, and then the corresponding d-axis component and rotation phase angle are obtained. Among them, the stationary coordinate system transformation refers to the conversion of the three-phase AC signal into an AC signal in a two-phase vertical coordinate system through Clarke transformation (Clarke) (also known as 3 / 2 transformation); the synchronous rotation coordinate system transformation refers to the conversion of the three-phase AC signal into a DC signal in a two-phase vertical coordinate system through Park transformation (Park) (also known as dq transformation), which can be regarded as the stationary coordinate system rotated at a certain angle. Among them, the rotation phase angle described in this embodiment refers to the phase angle obtained when the d-axis voltage orientation is completed in the synchronous rotation coordinate system, which is usually the A-phase phase angle defined by the AC system. These are all technologies well known to those skilled in the art and will not be repeated in this embodiment.

[0233] The first set threshold and the second set threshold can be independently set based on actual needs.

[0234] See Fig.17 and Fig.18 It can be seen that when the three-phase alternating current is connected in different phase sequences, the d-axis component in the synchronous rotating coordinate system has obvious positive and negative differences, so the method based on this embodiment can better realize the determination of whether the phase sequence is consistent.

[0235] See Fig.17 , Fig.19 and Fig. 20 Although the phase sequence of three-phase alternating current is consistent, there is still a phase difference at the same time due to different wiring methods. Therefore, the method of this embodiment can better ensure the "0" interruption intelligent switching of the energy router by adding phase judgment.

[0236] Similarly, the method disclosed in this embodiment can also be used to monitor the phase loss and phase sequence of a single-phase system, which will not be described in detail in this embodiment.

[0237] Example 6

[0238] It can be known that when the energy router in Example 2 is used in a multi-user scenario, each user needs to be equipped. Considering the difficulty of installing the energy router due to the concentration of users in a multi-user scenario, this embodiment provides a shared green power system module chassis 2, which can provide installation positions for installing multiple energy routers. At the same time, the shared green power system module chassis 2 can also be set on a wall, for example, through a wall-mounted component 1.

[0239] Among them, the shared green electricity system module chassis 2, the energy router and / or the wall-mounted component 1 can together constitute a shared green electricity system module.

[0240] This embodiment provides a shared green power system module, such as Figure 21-Figure 27 As shown, it includes a shared green power system module chassis 2 and a wall-mounted component 1 arranged at the shared green power system module chassis 2 .

[0241] The wall-mounted component 1 in this embodiment includes a component one 101 for installation on the outer wall of the shared green power system module chassis 2 and a component two 102 cooperating with the component one 101 . The shared green power system module chassis 2 is hung on the component two 102 through the component one 101 .

[0242] Among them, component two 102 is provided with a hanging hole 103, and component one 101 is provided with a protrusion 104 passing through the hanging hole 103. The hole height of the hanging hole 103 is greater than the height of the protrusion 104, so that there is enough space to make way when the chassis is removed from component two 102, that is, the hanging plate, to ensure the smooth disassembly and assembly of the entire shared green power system module.

[0243] The disassembly and assembly method of the shared green power system module in this embodiment enables it to be quickly disassembled and assembled, greatly reducing construction costs.

[0244] In order to ensure the stability of the installation in this embodiment, on the one hand, a support plate 105 capable of supporting the lower end surface of the protrusion 104 is provided at the hanging hole 103 of the second component 102, and the support plate 105 is provided at the lower end of the hole wall of the hanging hole 103 and extends along the direction in which the protrusion 104 passes through. The provision of the support plate 105 can support the protrusion 104, increase the force area of ​​the protrusion 104 on the bottom wall of the hanging hole 103, and ensure the force stability of the first component 101 on the second component 102.

[0245] On the other hand, the second component 102 is plate-shaped and longitudinally spaced with a plurality of hanging holes 103, and the first component 101 is strip-shaped and provided with protrusions 104 of the same number as the hanging holes 103. The plurality of hanging holes 103 and the plurality of protrusions 104 are matched one by one, which can better bear the force and maintain the stability of the hanging.

[0246] Furthermore, at least one of the support plates 105 at the plurality of hanging holes 103 is a bent support plate 113, and the bent support plate 113 includes a horizontal portion 106 and a downwardly bent inclined portion 107 along the extending direction of the support plate 105, and a downwardly open card slot 108 is configured at the lower end of the protruding portion 104 corresponding to the bent support plate 113, and a horizontal surface 109 matching the horizontal portion 106 and an inclined surface 110 matching the inclined portion 107 are configured on the upper end surface of the card slot 108. The arrangement of the bent support plate 113 enables a limit to be formed between the bent support plate 113 and the card slot 108 after installation, so as to prevent the first component 101 and the second component 102 from being separated in the horizontal direction.

[0247] Finally, the support plate 105 located at the lowest hanging hole 103 of component 2 102 is a horizontal support plate 111, and the lower end surface of the protrusion 104 corresponding to the horizontal support plate 111 is a horizontal surface 109. The setting of the horizontal support plate 111 can achieve overall vertical support for the shared green power system module, ensuring the installation stability of the overall structure.

[0248] In this embodiment, there are two components 101 and they are arranged on both sides of the length direction of component 2 102. At least one side of component 101 is provided with a fixing plate 112 that matches the outer side surface of component 2 102. The length direction of the fixing plate 112 is arranged along the length direction of component 101 and the plate surface is arranged parallel to the outer side surface of component 2 102. The fixing plate 112 and the outer side surface of component 2 102 are fixed to each other by screws. The setting of the fixing plate 112 can realize the limit of the length direction between component 1 101 and component 2 102, and reduce the lateral relative movement between component 1 101 and component 2 102.

[0249] In this embodiment, the second component 102 includes a middle plate 114 and side plates 115 disposed on both sides of the middle plate 114. The side plates 115 are provided with a long strip of mounting grooves 116 on the end faces facing away from the first component 101. The hanging holes 103 are disposed on the bottom wall of the mounting grooves 116. The support plate 105 is disposed inside the mounting grooves 116. The outer surface of the side wall of the mounting grooves 116 away from the middle plate 114 constitutes the outer side of the second component 102. The first component 101 includes a bottom plate 117. The protrusion 104 is configured as a U-shaped plate with an opening toward the bottom plate 117. The protrusion 104 and the bottom plate 117 are integrally formed.

[0250] Component 1 101 and component 2 102 are basically formed by bending thin plates, and the overall structure is a non-solid plate, which can effectively reduce the weight and form sufficient installation space, so that the overall outer surface is flat, the structure is complete, and the appearance is beautiful.

[0251] The shared green power system module chassis (2) in this embodiment includes a chassis assembly, including a chassis shell 201 and a chassis panel 202 arranged at the front end surface of the chassis shell 201. A total module installation area 203 and multiple sub-module installation areas 204 are arranged in the chassis shell 201 at even intervals along the height direction of the chassis shell 201. The total module installation area 203 is installed with a mounting frame 1 205 for installing a circuit breaker and a mounting frame 206 for installing an electric meter, a splitter and a PCS air switch. Each sub-module installation area 204 is installed with a mounting frame 3 207 for installing a user control switch and a mounting frame 4 208 for installing an energy router.

[0252] The chassis components are divided into regions, and each component can be arranged in a better position, forming an independent modular design with a high degree of integration. Each sub-module installation area 204 is equipped with an energy router, an independent electric meter, and an independent user control switch, which can provide each user with timely and accurate collection of electricity consumption information and facilitate individual user maintenance.

[0253] Specifically, in this embodiment, the main module installation area 203 and the sub-module installation area 204 are respectively provided with a rectangular frame 1 209 and a rectangular frame 210 fixed on the rear end surface of the chassis shell 201, the mounting frame 1 205 and the mounting frame 2 206 are both arranged in the rectangular frame 1 209, the mounting frame 3 207 and the mounting frame 4 208 are both arranged in the rectangular frame 2 210, and the upper side wall and the lower side wall of the rectangular frame 1 209 and the upper side wall and the lower side wall of the rectangular frame 2 210 are all provided with wire holes 211.

[0254] The outer side surfaces of rectangular frame 1 209 and rectangular frame 2 210 are on the same vertical plane, and a wire groove 212 is formed between the same vertical plane and the inner surface of the side wall of the chassis shell 201, which fully divides the internal area of ​​the chassis into an installation area and a wire passing area, so that various components and lines inside the chassis can be effectively and reasonably arranged, which is convenient for subsequent maintenance and installation.

[0255] In this embodiment, both the mounting frame 1 205 and the mounting frame 206 include a U-shaped support plate 1 213 with an opening toward the rear end face of the chassis housing 201. A horizontally arranged guide rail 1 214 for clamping the electric meter, the splitter and the PCS air switch is installed on the support plate 1 213 of the mounting frame 206. The support plate 1 is fixed to the rear end face of the chassis housing 201 by screws.

[0256] The mounting frame 3 207 includes a support plate 215 in the shape of a U-shaped plate with an opening toward the rear end face of the chassis shell 201, and a horizontally arranged guide rail 216 for user control switch connection is installed on the support plate 215, and both ends of the guide rail 216 are provided with limit plates 217 for preventing the user control opening from being derailed along the length direction of the guide rail 216.

[0257] The mounting frame 208 includes two support bars 218 that are arranged opposite to each other in the transverse direction and vertical in the length direction. A plurality of through holes 219 arranged at intervals are provided on opposite sides of the support bars 218 , and the energy router is installed between the two support bars 218 .

[0258] In addition, in this embodiment, the top and bottom ends of the chassis housing 201 are both provided with wire entry and exit holes 220 that are connected to the interior of the chassis housing 201 , and the wire entry and exit holes 220 are convenient for installation and upper and lower wire routing.

[0259] Door plate reinforcement ribs are arranged on the inner side of the chassis panel 202. The chassis panel 202 is easy to install, has a protective effect, and also has an aesthetic effect.

[0260] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0261] The present invention and its implementation methods are described schematically above, and the description is not restrictive. The embodiments shown in the embodiments are only part of the implementation methods of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the embodiments and designs a structure and an implementation method similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A green energy sharing system based on a photovoltaic storage system, which includes: Photovoltaic storage system; User power generation system, which is configured at all or part of the users and is used to access the user load circuit; An energy router is configured at each user; the energy router is used to provide a switchable grid branch for accessing the grid bus, a green energy branch for accessing the photovoltaic storage system, and a load branch for the user's load circuit, and the grid branch and the green energy branch can switchably supply power to the load branch; as well as The system cloud platform is used to generate a dispatch instruction based on the power generation of the photovoltaic storage system, the power generation of the user power generation system and the power consumption of the user load circuit. The dispatch instruction is used to control multiple users to access the photovoltaic storage system only through the green energy branch through the energy router; wherein the sum of the power consumption of the load circuits of the multiple users is balanced with the sum of the power generation of the user power generation system of the multiple users and the power generation of the photovoltaic storage system; The energy router has a mains input port, a green energy input port and a load output port. The mains input port is used to access the grid bus to form a grid branch, the green energy input port is used to access the photovoltaic storage system to form a green energy branch, and the load output port is used to access the user load circuit to form a load branch. A microcontroller MCU is also provided at the energy router, and the microcontroller MCU is used to realize the on / off control between the load output port and the mains input port and the green energy input port.

2. The green energy sharing system based on the photovoltaic storage system according to claim 1 is characterized in that: An energy routing meter is installed between the green energy input port and the photovoltaic storage system. The energy routing meter is used to measure the electricity consumption at the green energy branch and upload it to the system cloud platform.

3. The green energy sharing system based on the photovoltaic storage system according to claim 1 is characterized in that: A user electricity meter is arranged between the mains power input port and the power grid bus.

4. The green energy sharing system based on the photovoltaic storage system according to claim 1 is characterized in that: A metering circuit is provided between the load output port and the user load circuit. The metering circuit is used to collect the user load power. And send it to the system cloud platform; the system cloud platform uses the user load power The power consumption of the user load circuit.

5. The green energy sharing system based on the photovoltaic storage system according to claim 1 is characterized in that: The photovoltaic storage system includes an inverter and an energy storage battery. The inverter can be used to collect the total power generated by the inverter. and the rechargeable power of the energy storage battery And the battery can discharge power And send it to the system cloud platform; the system cloud platform uses the total power generation power of the inverter As the power generation of the photovoltaic storage system.

6. The green energy sharing system based on the photovoltaic storage system according to claim 1 is characterized in that: The energy router is configured to collect the user power generation power of the user power generation system And send it to the system cloud platform; the system cloud platform uses the user's power generation The power generation of the user's power generation system.

7. The green energy sharing system based on the photovoltaic storage system according to claim 1 is characterized in that: The green energy input port is connected to the load output port through the first relay group, and the mains input port is connected to the load output port through the second relay group; the microcontroller MCU is used to control the on and off of the first relay group and the second relay group.

8. The green energy sharing system based on the photovoltaic storage system according to claim 7 is characterized in that: The green energy input port and the mains input port are both provided with corresponding phase voltage sampling circuits, which are used to realize the phase voltage collection of each phase input at the green energy input port and the mains input port; The green energy input port and the mains input port are both provided with a zero-crossing detection circuit, which is used to realize the zero-crossing point detection of each phase input at the green energy input port and the mains input port.

9. The green energy sharing system based on the photovoltaic storage system according to claim 8 is characterized in that: The phase voltage sampling circuit and the zero-crossing detection circuit at the green energy input port and the mains input port are integrated into a zero-crossing detection circuit; the zero-crossing detection circuit includes: A phase voltage sampling circuit constructed based on the first operational amplifier U1A performs sampling and output based on the first reference voltage value, the voltage of the single-phase live wire and the voltage of the neutral wire. The sampling output of the phase voltage sampling circuit is the sum of a set multiple of the difference between the voltage of the single-phase live wire and the voltage of the neutral wire and the first reference voltage value; as well as A zero-crossing detection circuit constructed based on the second operational amplifier U2A, the zero-crossing detection circuit is used to compare the sampled output of the phase voltage sampling circuit with the second reference voltage value and output a zero-crossing signal; The first reference voltage value and the second reference voltage value have the same value.

10. A green energy sharing management method based on a photovoltaic storage system, comprising: Configure the optical storage system; A user power generation system is configured at all or part of the users, and the user power generation system is used to access the user load circuit; Energy routers are configured at all users. The energy routers are used to provide a mains input port, a green energy input port and a load output port. The mains input port is used to access the grid bus to form a grid branch, the green energy input port is used to access the photovoltaic storage system to form a green energy branch, and the load output port is used to access the user's load circuit to form a load branch. A microcontroller MCU is also provided at the energy router. The microcontroller MCU is used to realize the on / off control between the load output port and the mains input port and the green energy input port. The system cloud platform generates dispatching instructions based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit. The dispatching instructions are used to control multiple users to access the photovoltaic storage system only through the green energy branch through the energy router; wherein the sum of the power consumption of the load circuits of the multiple users is balanced with the sum of the power generation of the user's power generation systems and the sum of the power generation of the photovoltaic storage system.

11. The green energy sharing management method based on the photovoltaic storage system according to claim 10 is characterized in that: The photovoltaic storage system includes an inverter and energy storage batteries. The system cloud platform collects the total power generated by the inverter in real time. , the battery chargeable power of the energy storage battery And the battery can discharge power , User load power And user power generation ; Among them, the total power generated by the inverter As the power generation of the photovoltaic storage system, the user's power generation As the power generation of the user's power generation system, the user's load power The amount of electricity used as a user load circuit; The generation of dispatching instructions based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit by the system cloud platform includes: Get the user load power of each user And the corresponding user power generation , the user load power Greater than the user's power generation The corresponding user is classified as a positive user, and the user load power Less than the user's power generation The corresponding user is classified as a negative user; among them, the user load power Power generation with users The difference between the power surplus and the power shortage of the user ,Right now ; In total power generation Not less than the battery chargeable power When the first scheduling instruction is generated, the first scheduling instruction is used to select a plurality of positive users and only connect them to the optical storage system, and the plurality of positive users have surplus or shortage power. The sum does not exceed the total power generation Battery power sum.

12. The green energy sharing management method based on the photovoltaic storage system according to claim 11 is characterized in that: The generation of the dispatching instruction based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit by the system cloud platform also includes: In total power generation Less than the battery charge capacity When the second scheduling instruction is generated, the second scheduling instruction is used to select multiple negative value users and only connect them to the optical storage system, and the user surplus and shortage power of the multiple negative value users The absolute value of the sum does not exceed the battery charge capacity Total power generation difference.

13. The green energy sharing management method based on the photovoltaic storage system according to claim 12 is characterized in that: The generation of the dispatching instruction based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit by the system cloud platform also includes: A third scheduling instruction is generated based on the total power of positive users who are not connected to the photovoltaic storage system and the total power of negative users who are not connected to the photovoltaic storage system; the third scheduling instruction is used to connect all of the two types of users with smaller total power to the photovoltaic storage system, and to control the two types of users with larger total power to only partially connect to the photovoltaic storage system; wherein the total power of different types of users connected to the photovoltaic storage system is kept basically consistent.

14. The green energy sharing management method based on the photovoltaic storage system according to claim 13 is characterized in that: The generation of the dispatching instruction based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit by the system cloud platform also includes: A fourth dispatch instruction is generated, where the fourth dispatch instruction is used to connect the user only to the power grid bus.

15. The green energy sharing management method based on the photovoltaic storage system according to claim 14 is characterized in that: System cloud platform based on the total power generated by the inverter , Battery can discharge power And the surplus and shortage power of all users connected to the PV storage system , real-time acquisition of available power of the photovoltaic storage system ;in, ; Indicates the surplus or shortage power of all users connected to the PV storage system sum; System cloud platform based on the total power generated by the inverter , Battery rechargeable power And the surplus and shortage power of all users connected to the PV storage system , real-time acquisition of the absorbable power of the photovoltaic storage system ;in, ; The generation of the dispatching instruction based on the power generation of the photovoltaic storage system, the power generation of the user's power generation system and the power consumption of the user's load circuit by the system cloud platform also includes: exist and When, based on the first scheduling instruction, the microcontroller MCU controls the grid branch at the energy router to remain disconnected and the green energy branch to remain connected; For any user, and When the power grid branch at the energy router is disconnected and the green energy branch is turned on, the microcontroller MCU is used to control the power grid branch at the energy router to be disconnected and the green energy branch to be turned on based on the second scheduling instruction; For any user, When, based on the fourth scheduling instruction, the microcontroller MCU controls the grid branch at the energy router to remain on and the green energy branch to remain off; For any user, and When, based on the fourth scheduling instruction, the microcontroller MCU controls the grid branch at the energy router to remain on and the green energy branch to remain off; exist and At this time, based on the fourth scheduling instruction, the microcontroller MCU controls the grid branch at the energy router to remain turned on and the green energy branch to remain turned off.

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