Power generation control method and related device

Abstract

The invention provides a power generation control method and a related device, and relates to the field of household photovoltaic power generation. In the circuit breaker, a control unit and a detection unit are integrated in the circuit breaker, the detection unit is used for detecting operation information of a main circuit, power configuration information is determined based on the operation information, and the power configuration information is sent to a micro inverter. And the micro inverter adjusts the generated power of the photovoltaic module according to the power configuration information. The power generation power can be adjusted in real time according to the operation condition of the main circuit, and more electric energy is prevented from flowing to the power grid, so that the zero-feed network of the power grid is realized, and the regulation and control pressure of the power grid is reduced.

Description

Technical Field

[0001] The present application relates to the field of household photovoltaic power generation, and more specifically, to a power generation control method and related devices. Background Art

[0002] With the development of the new energy industry, photovoltaic power generation has entered thousands of households and has been increasingly integrated into residents' daily lives. For example, users can install photovoltaic modules on the balcony, and the electricity generated by the photovoltaic modules can be used by household loads.

[0003] In actual scenarios, since the user-side equipment is connected to the power grid and photovoltaic panels respectively, the electric energy generated by the photovoltaic panels will be transmitted to the power grid through the user-side equipment, increasing the regulation pressure of the power grid. Summary of the invention

[0004] In view of this, the present application provides a power generation control method and related devices to solve the problem that the electric energy generated by photovoltaic modules will be transmitted to the power grid through user-side equipment, increasing the regulation pressure of the power grid.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] A power generation control method is applied to a control unit in a circuit breaker, wherein a detection unit is integrated inside the circuit breaker, and the power generation control method comprises:

[0007] Using the detection unit to detect the operation information of the main circuit;

[0008] Determining power configuration information based on the operation information;

[0009] The power configuration information is sent to the micro inverter, so that the micro inverter adjusts the power generation power of the photovoltaic assembly according to the power configuration information.

[0010] Optionally, the detection unit includes a current detection unit; and using the detection unit to detect the operation information of the main circuit includes:

[0011] The current information of the main circuit detected by the current detection unit is obtained, wherein the current information includes the current type and the current magnitude; the operation information of the main circuit includes the current information of the main circuit.

[0012] Optionally, determining power configuration information based on the operation information includes:

[0013] In the case where the current type is a reverse current, determining a power limit ratio corresponding to the current magnitude; the reverse current is a current whose direction flows from the user side to the power grid;

[0014] The power limit ratio is used as power configuration information.

[0015] Optionally, determining a power limit ratio corresponding to the current magnitude includes:

[0016] Obtaining the correspondence between the pre-configured current value and the power limit ratio;

[0017] The power limit ratio corresponding to the current magnitude is determined from the corresponding relationship.

[0018] Optionally, determining power configuration information based on the operation information further includes:

[0019] When the duration of the current type being a forward current is not less than a time threshold and the micro-inverter is in a power reduction operation state, power limit release information is generated; the forward current is a current flowing from the grid to the user side;

[0020] The power restriction release information is used as power configuration information.

[0021] Optionally, the circuit breaker is further integrated with a communication unit to send the power configuration information to the micro inverter, including:

[0022] The power configuration information is sent to the micro inverter through the communication unit.

[0023] A power generation control device is applied to a control unit in a circuit breaker, wherein a detection unit is integrated inside the circuit breaker, and the power generation control device comprises:

[0024] A detection module, used to detect the operation information of the main circuit using the detection unit;

[0025] An information determination module, configured to determine power configuration information based on the operation information;

[0026] The power control module is used to send the power configuration information to the micro inverter so that the micro inverter adjusts the power generation power of the photovoltaic module according to the power configuration information.

[0027] A circuit breaker is used to implement the above power generation control method.

[0028] Optionally, a signal blocking unit is integrated inside the circuit breaker.

[0029] A power generation control system comprises the above-mentioned circuit breaker.

[0030] Optionally, one end of the circuit breaker is connected to the power grid, the other end of the circuit breaker is connected to a load bus, the load bus is connected to a load, the AC socket in the load is connected to the micro inverter through an AC line, and the other end of the micro inverter is connected to a photovoltaic module through a DC line.

[0031] The present application provides a power generation control method and related devices. In the present application, a control unit and a detection unit are integrated in a circuit breaker, and the detection unit is used to detect the operation information of the main circuit. Based on the operation information, the power configuration information is determined, and the power configuration information is sent to the micro inverter, so that the micro inverter adjusts the power generation power of the photovoltaic module according to the power configuration information. That is, the present invention can adjust the power generation power in real time according to the operation status of the main circuit, avoid more electric energy flowing to the power grid, and then realize the zero-feedback network of the power grid, reducing the regulation pressure of the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0033] Figure 1 A schematic diagram of the structure of a circuit breaker provided by an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of the module of a circuit breaker provided by an embodiment of the present invention;

[0035] Figure 3 A schematic diagram of a guide rail installation of a circuit breaker provided in an embodiment of the present invention;

[0036] Figure 4 A flow chart of a power generation control method provided by an embodiment of the present invention;

[0037] Figure 5 A schematic diagram of the structure of a power generation control system provided by an embodiment of the present invention;

[0038] Figure 6 A flow chart of a power control method provided by an embodiment of the present invention;

[0039] Figure 7 A flowchart of another power control method provided by an embodiment of the present invention;

[0040] Figure 8 A flowchart of another power control method provided by an embodiment of the present invention;

[0041] Fig. 9 A schematic diagram of the structure of a power control device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] With the development of the new energy industry, photovoltaic power generation has entered thousands of households and has been increasingly integrated into residents' daily lives. For example, users can install photovoltaic modules on the balcony, and the electricity generated by the photovoltaic modules can be used by household loads.

[0044] In actual scenarios, since the user-side equipment is connected to the grid and photovoltaic modules separately, the electricity generated by the photovoltaic modules will be transmitted to the grid through the user-side equipment, increasing the regulation pressure of the grid. In order to reduce the burden on the grid, more and more regions encourage the self-consumption of renewable energy power generation. Therefore, based on anti-backflow control, zero power feed-back can be achieved to realize the friendliness of the grid.

[0045] In the scenario of household photovoltaic power generation, in order to achieve zero-feedback of the power grid, it is necessary to install a current detection unit in the main power circuit, output current through the current detection unit to an external anti-backflow device, and perform zero-feedback regulation operations based on the anti-backflow device.

[0046] In this way, when adding equipment, it is necessary to destroy the wall and install the current detection unit on the main line, which is cumbersome to install. In addition, an additional box for the current detection unit may be placed on the wall, which affects the appearance.

[0047] To this end, in the embodiment of the present invention, the installation position of the current detection unit is changed, referring to Figure 1 The detection unit 11, such as the current detection unit, is integrated into a miniature circuit breaker that is common in every household. Generally, since the main circuit breaker is connected to the power grid, the current detection unit can be integrated into the main circuit breaker.

[0048] In addition, in order to realize the anti-backflow control, it is also necessary to integrate a control unit 12 in the main circuit breaker to realize the entire anti-backflow control operation.

[0049] In addition, the object of the backflow prevention control is the micro inverter. In order to realize the communication between the control unit and the micro inverter, it is also necessary to integrate the communication unit 13 in the main circuit breaker.

[0050] As can be seen from the above, the present invention uses a miniature circuit breaker as a carrier, and integrates the communication unit, current detection unit, control unit and other modules in the anti-backflow management module into the miniature circuit breaker to obtain the circuit breaker in the embodiment of the present invention. The circuit breaker is replaced with the main circuit breaker in the original PZ30 box of the family, and the anti-backflow control in the embodiment of the present invention can be realized through the main circuit breaker. Since the newly added communication unit, current detection unit, control unit and other modules are integrated inside the main circuit breaker, there is no need to configure new equipment on the main circuit, no need to occupy additional space, and no need to destroy the existing decorative space of the family, which meets the real needs of the actual family scene.

[0051] In another implementation of the present invention, referring to Figure 2 The main circuit breaker adopts 2P micro-break module for better protection.

[0052] In actual scenarios, in order to better achieve the replacement of the main circuit breaker, the main circuit breaker can be set to a rail type. The structure of the main circuit breaker is as follows: Figure 3 As shown. There is a guide rail installation slot at the arrow position, where the guide rail can be installed. The guide rail circuit breaker can realize the rapid replacement of the main circuit breaker.

[0053] The circuit breaker in this embodiment uses a conventional circuit breaker as a carrier, is installed on a guide rail, and has integrated detection, communication, and control functions. The circuit breaker directly replaces the main circuit breaker of the household distribution box. The replacement is simple, does not take up additional space in the home, and does not disrupt the existing decorative environment.

[0054] Based on the above content, an embodiment of the present invention provides a power generation control method, which is applied to a control unit in a circuit breaker (specifically, the main circuit breaker mentioned above), wherein the circuit breaker has an internal integrated detection unit. The specific structure is as follows: Figure 1 shown.

[0055] Since the detection unit is installed in the main circuit breaker, which is located in the main circuit, the detection unit can detect the operation information of the main circuit, such as current, voltage, power, etc. The control unit can communicate with the detection unit to obtain the data detected by the detection unit.

[0056] Reference Figure 4 , a power generation control method may include:

[0057] S11. Utilize the detection unit to detect operation information of the main circuit.

[0058] In actual scenarios, such as Figure 5As shown, in the home photovoltaic power generation scenario, in order to achieve photovoltaic power generation, one or more photovoltaic modules can be installed in places with good lighting such as balconies. Photovoltaic modules can specifically refer to photovoltaic panels. Photovoltaic modules can collect light energy and transmit the collected light energy to the micro-inverter through a DC line. The micro-inverter performs DC-to-AC operation inside and connects the converted AC power to the circuit of the household PZ30 box in the home through an AC socket, such as a balcony socket. The load bus of the household PZ30 box can be connected to loads such as sockets. Taking the access to the socket as an example, the socket can be connected through the socket loop. In addition, other loads can be connected through other loops to power the loads inside the home.

[0059] The other end of the load bus is connected to an anti-reverse current circuit breaker, referred to as an anti-reverse current micro-breaker, that is, the main circuit breaker mentioned above, and the other end of the main circuit breaker is connected to the power supply system, that is, the power grid.

[0060] It should be noted that in the embodiment of the present invention, the main circuit breaker still has the original circuit protection function, that is, it cuts off the circuit when the current is large. On this basis, the function of the main circuit breaker is further expanded, and the control unit inside it can be used to achieve anti-backflow operation, thereby realizing zero-feedback network.

[0061] When the power generated by the photovoltaic modules exceeds the power used by the household load, current will flow from the user side to the grid side. That is, the excess power generated by the photovoltaic modules will flow through the Figure 5 The circuit structure shown flows into the power grid, thereby increasing the regulation pressure of the power grid.

[0062] If the electricity generated by the photovoltaic panels is less, it may be less than the electricity used by the household load. At this time, the insufficient electricity will be input from the grid to the load, and the current will flow from the grid side to the user side.

[0063] If the power generated by the PV panels is in the middle, it is exactly equal to the power used by the household load. At this time, no current flows between the user side and the grid side.

[0064] From the above, we can see that when the amount of photovoltaic power generation is different, the current flows in different directions. Therefore, zero-feedback grid can be achieved by monitoring the current.

[0065] To this end, the detection unit in the embodiment of the present invention may be a current detection unit, and the control unit may communicate with the current detection unit to obtain the current information detected by the current detection unit. It should be noted that since the current detection unit is installed in the main circuit breaker, which is located in the main circuit, the current detection unit detects the current information of the main circuit, and the control unit obtains the current information of the main circuit detected by the current detection unit, and the operation information of the main circuit includes the current information of the main circuit.

[0066] More specifically, the current information includes the current type and the current magnitude. The current type can be divided into reverse current and forward current. The user's power consumption can be determined by the current type and the current magnitude.

[0067] Among them, the reverse current is the current flowing from the user side to the grid, that is, at this time the photovoltaic power generation power of the photovoltaic module is greater than the power consumption of the household load, the photovoltaic power generation provides more electricity, and the excess electricity will flow to the grid.

[0068] The forward current is opposite to the reverse current, and refers to the current flowing from the grid to the user side. That is, at this time, the photovoltaic power generation power of the photovoltaic module is less than the power consumption of the household load. The power provided by photovoltaic power generation is insufficient, and the grid is required to provide part of the power to the household load to ensure the power consumption required by the household load.

[0069] The current size refers to the current value, such as 0.5A, 1A, 1.5A, etc.

[0070] S12. Determine power configuration information based on the operation information.

[0071] After collecting the above current type and current size, if there is the above reverse current, there will be excess electric energy flowing into the grid, and there is a feeding situation. In order to achieve zero feeding, it is necessary to control Figure 5 The power generation power of the micro inverter shown limits the power generation power, thereby reducing the power generation, so that the power provided by the photovoltaic components is consistent with the power grid required by the household load. At this time, no excess power flows into the power grid, realizing zero feed-in network.

[0072] In addition, after limiting the power generation of photovoltaic modules, if the power consumption of household loads increases, the power provided by photovoltaic modules is insufficient to meet the power requirements of household loads. At this time, the household loads will obtain power from the grid, incurring fees. At this time, the power generation of photovoltaic modules can be increased. Therefore, by increasing the power generation, the power generation of photovoltaic modules can be increased, so that the power provided by photovoltaic modules is consistent with the grid required by household loads. At this time, the grid does not need to provide power, nor will excess power be input into the grid.

[0073] It should be noted that even if the power generation capacity is increased to the maximum, it still cannot meet the power consumption of household loads. At this time, the power grid needs to provide a part of the power grid to ensure the power demand of household loads.

[0074] In the above embodiment, the power generation of the photovoltaic module is regulated by power configuration information. The above operation information is analyzed to obtain the power configuration information. The power configuration information is used to adjust the power generation of the micro inverter to regulate the power generation of the photovoltaic module.

[0075] S13: Send the power configuration information to the micro inverter, so that the micro inverter adjusts the power generation power of the photovoltaic module according to the power configuration information.

[0076] In actual scenarios, such as Figure 5 As shown, the circuit breaker (i.e. Figure 5 The anti-reverse flow micro-breaker in the circuit breaker is not directly connected to the micro-inverter. In order to realize the communication between the circuit breaker and the micro-inverter, a communication unit needs to be integrated in the circuit breaker. The communication unit can be 4G, 5G, WIFI, Bluetooth, local area network, near field communication, PLC (Programmable Logic Controller) carrier signal communication unit, wireless network communication technology WIFI and other implementation methods.

[0077] Among them, after analysis, it is found that the PLC carrier signal has a strong anti-interference ability in communication. Therefore, in the embodiment of the present invention, the PLC carrier signal communication method can be used preferentially. The PLC carrier signal communication unit uses indoor power lines and micro inverters to interact with signals. Compared with various communication methods such as WIFI / Bluetooth, the stability and reliability of the signal are guaranteed.

[0078] In order to further improve the communication capability, a signal blocking unit can be integrated inside the circuit breaker, and the signal blocking unit can be specifically a PLC signal blocking unit. In actual home scenarios, since multiple households live in the same building, each household communicates through PLC carrier signals, which will result in a large number of PLC carrier signals. Since the PLC carrier signals are relatively concentrated, there will be PLC carrier signal interference problems. In order to avoid this interference problem, a PLC signal blocking unit can be set at the incoming port of the circuit breaker to isolate the PLC signal and block the mutual interference of external PLC signals.

[0079] On the basis that the circuit breaker is configured with a PLC carrier signal communication unit and a PLC signal blocking unit, a communication unit, such as a PLC carrier signal communication unit, is used to send the power configuration information to the micro-inverter. The micro-inverter responds to the information and adjusts the power generation power of the photovoltaic component according to the power configuration information, specifically, the power generation power can be increased or decreased.

[0080] In an embodiment of the present invention, a control unit and a detection unit are integrated in the circuit breaker, and the detection unit is used to detect the operation information of the main circuit, and based on the operation information, the power configuration information is determined, and the power configuration information is sent to the micro inverter, so that the micro inverter adjusts the power generation power of the photovoltaic module according to the power configuration information. That is, the present invention can adjust the power generation power in real time according to the operation status of the main circuit, avoid more electric energy flowing to the power grid, and then realize the zero-feedback network of the power grid, thereby reducing the regulation pressure of the power grid.

[0081] In addition, the circuit breaker adopts PLC communication method based on power lines, and integrates blocking modules at the incoming port, ensuring that an internal communication connection network is formed with single-household units, and there will be no mutual interference with external signals. Compared with WIFI / Bluetooth and other methods, the stability and reliability of the signal are guaranteed.

[0082] In the above embodiment, after detecting the operation information, the power configuration information can be determined based on the operation information. Specifically, referring to Figure 6 , which may include:

[0083] S21. Obtain current type.

[0084] Among them, the current type can be extracted from the above current information, and the current type is divided into two types, reverse current and forward current.

[0085] S22: Determine a power limit ratio corresponding to the current magnitude.

[0086] When the current type is reverse current, it means that the photovoltaic module generates more electricity at this time, and the household load cannot use all of it. The excess electricity needs to flow from the user side to the power grid, that is, a non-zero feed-in phenomenon occurs, causing pressure on the power grid regulation. To this end, it is necessary to reduce the current flowing from the user side to the grid side, gradually reducing it to zero, and realizing zero feed-in. This current occurs because the photovoltaic module generates more electricity. Therefore, the power generation of the photovoltaic module can be reduced, so that no excess electricity flows from the user side to the power grid.

[0087] The micro inverter is a key component of photovoltaic module power generation, which can adjust the power generation and thus adjust the power generation. In the embodiment of the present invention, starting from the micro inverter, when adjusting the power generation, it is necessary to reduce the power generation because the power generation needs to be reduced.

[0088] The size of the generated power will affect the size of the current in the main circuit. The larger the current, the larger the current generated power, and the greater the degree of restriction required. The smaller the current, the smaller the current generated power, and the smaller the degree of restriction required. In this embodiment of the present invention, the power restriction ratio can be determined based on the current size.

[0089] In actual scenarios, in order to reduce the time for determining the power limit ratio, the corresponding relationship between the current value and the power limit ratio may be preconfigured.

[0090] In this correspondence, for a current value, there is a corresponding power limit ratio. The power limit ratio corresponding to a current of 0.5A is 10%. Under normal circumstances, the capacity of the photovoltaic system used on a family balcony is relatively small, generally around 1000W. At this time, after calculating and analyzing the current generated by this capacity, the power usage of the household load, and the current flowing to the power grid, it is found that the current value is generally a multiple of 0.5A. Therefore, the corresponding power limit ratio can be set according to multiples of 0.5A to achieve a zero-feedback network. For example, the power limit ratio corresponding to a current of 0.5A is 10%, and the power limit ratio corresponding to a current of 1A is 20%... That is, if power limitation is performed according to this correspondence, a zero-feedback network can be achieved.

[0091] It should be noted that after obtaining the above-mentioned correspondence, the end user can also adjust the parameters in the correspondence according to the capacity of the installed balcony photovoltaic system and his own electricity usage habits, such as adjusting the current value and / or the power limit ratio, so that the correspondence is more in line with the user's electricity usage habits.

[0092] The corresponding relationship can be pre-stored in a database, and when it is needed later, the corresponding relationship is obtained from the database and a corresponding query operation is performed, that is, the corresponding relationship between the pre-configured current value and the power limit ratio is obtained, and the power limit ratio corresponding to the current value is determined from the corresponding relationship.

[0093] For example, if the current in the main circuit is 0.5A, the power limit ratio at this time is 10%. The power limit ratio is the limit value of the current power generation. If it is 10%, it means that the current power generation should be based on the power generation power × (1-10%).

[0094] S23: Use the power limit ratio as power configuration information.

[0095] In this embodiment, after the power limit ratio is obtained, it is sent to the micro inverter as power configuration information, so that the micro inverter performs power regulation operation according to the power limit ratio.

[0096] For example, if the power limit ratio is 10%, the micro inverter will generate power at 90% of the current power. Since the power generation is reduced by 10%, the current flowing from the user side to the grid can be reduced, thus achieving zero-feedback.

[0097] Figure 7 The whole control process of reverse current is introduced. Figure 7 The circuit breaker (also called anti-reverse flow circuit breaker) detects the current direction and size of its own main circuit, and after calculation by the internal control unit, sends the corresponding instructions to the micro-inverter based on the data processing results.

[0098] Specifically, when reverse current is detected, it is determined that the balcony photovoltaic power generation power is greater than the household load power. The control unit in the circuit breaker combines the magnitude of the detected reverse current to calculate the power limit ratio sent to the micro-inverter. The default power limit ratio of the circuit breaker is 0.5A for 10% and 1A for 20% (the power limit ratio is set according to the multiple of the current value 0.5A). Send a power limit operation instruction (specifically including the power limit ratio) to the micro-inverter. The micro-inverter receives the instruction and adjusts the power generation according to the instruction. It operates at a reduced power level, which can quickly reduce the power generation of the micro-inverter, realize a true zero-feedback network, and ensure grid friendliness.

[0099] S24: Generate power restriction release information.

[0100] Specifically, when the current type is a forward current, power regulation is temporarily not performed. At this time, current detection is continuously performed. If the duration of the forward current is not less than the time threshold, it means that the current household load continues to consume a large amount of electricity. At this time, the power provided by the photovoltaic module is insufficient, and it is necessary to obtain some power from the power grid to provide it to the household load. Among them, the time threshold can be configured according to the actual scenario, such as 5S. If there is a situation where the current flows from the power grid to the user side for at least 5S, it means that the current household load continues to consume a large amount of electricity, the photovoltaic power generation power is insufficient, and the power needs to be increased. Since the forward current is set to exist for a duration, the problem of short-term large power consumption leading to insufficient power of the photovoltaic module can be avoided. For example, when the light is turned on for a short time, the power consumption is large, but after the light is turned off, the power consumption is less, and there is no need to increase the power generation power of the photovoltaic module. In one implementation method, if the duration of the forward current is less than the time threshold, the current type and size are continued to be detected. When the duration of the forward current is not less than the time threshold, the subsequent operation is performed.

[0101] If there is no power generation limit at present, since the current power generation is already the maximum power generation of the micro inverter, the power generation of the photovoltaic module cannot be increased by increasing the power generation. At this time, the photovoltaic module continues to obtain insufficient electricity from the grid.

[0102] If the power generation limit is implemented, that is, the micro-inverter is in a reduced power operation state, the power generation power of the photovoltaic module can be increased by releasing the power limit, reducing the power obtained from the power grid. At this time, the power limit release information is generated, and the power limit release information is used to instruct the micro-inverter to release the power generation limit and restore the power generation power to the maximum power generation power.

[0103] S25. Use the power restriction release information as power configuration information.

[0104] Specifically, the power restriction release information is sent to the micro inverter as power configuration information, so that the micro inverter releases the power restriction.

[0105] Reference Figure 8 , Figure 8 The normal current control logic is given. When the micro-inverter is in the state of power generation restriction, that is, the power reduction operation state, the circuit breaker detects the forward current, and the forward current continues after a delay of 5s. It is judged that the power consumption of the household load is greater than the balcony photovoltaic power generation power, and a power release instruction is sent to the micro-inverter. The micro-inverter releases the power generation capacity step by step until normal power generation. Among them, the default ratio of step-by-step power release is 10%, and the end user can adjust it according to the habit. It is recommended that the ratio should not be too large to improve the friendliness of the grid.

[0106] For example, if the current power limit ratio is 50%, when the micro-inverter is in the power reduction operation state, the circuit breaker detects the forward current, and the forward current continues after a delay of 5s, then a power release command can be sent to the micro-inverter. After receiving the command, the micro-inverter first adjusts the power generation to 60%, and then adjusts it to 70%, 80%, 90%, and 100%, reaching the maximum power generation. If reverse current is found during the step-by-step power release process, the circuit breaker can continue to determine the power limit ratio to limit the power generation of the micro-inverter.

[0107] Subsequently, the control logic of reverse current and forward current is repeated continuously to ensure that no current flows into the power grid and realize zero-feedback network.

[0108] Based on the above-mentioned embodiment of the power generation control method, another embodiment of the present invention provides a power generation control device, which is applied to a control unit in a circuit breaker, wherein the circuit breaker has an internal integrated detection unit, referring to Fig. 9 , the power generation control device comprises:

[0109] A detection module 11, used to detect the operation information of the main circuit using the detection unit;

[0110] An information determination module 12, configured to determine power configuration information based on the operation information;

[0111] The power control module 13 is used to send the power configuration information to the micro inverter, so that the micro inverter adjusts the power generation power of the photovoltaic module according to the power configuration information.

[0112] In one implementation, the detection unit includes a current detection unit; the detection module 11 is specifically used for:

[0113] The current information of the main circuit detected by the current detection unit is obtained, wherein the current information includes the current type and the current magnitude; the operation information of the main circuit includes the current information of the main circuit.

[0114] In one implementation, the information determination module 12 includes:

[0115] The first determination submodule is used to determine the power limit ratio corresponding to the current size when the current type is a reverse current, and use the power limit ratio as power configuration information; the reverse current is a current flowing from the user side to the power grid.

[0116] In one implementation, when the first determination submodule is used to determine the power limit ratio corresponding to the current magnitude, it is specifically used to:

[0117] A correspondence between a pre-configured current value and a power limit ratio is obtained, and the power limit ratio corresponding to the current magnitude is determined from the correspondence.

[0118] In one implementation, the information determination module 12 includes:

[0119] The second determination submodule is used to generate power limit release information when the duration of the current type is forward current is not less than a time threshold and the micro inverter is in a power reduction operation state, and use the power limit release information as power configuration information; the forward current is the current flowing from the power grid to the user side.

[0120] In one implementation, the circuit breaker is further integrated with a communication unit, and the power control module 13 is used to send the power configuration information to the micro inverter, specifically for:

[0121] The power configuration information is sent to the micro inverter through the communication unit.

[0122] In this embodiment, a control unit and a detection unit are integrated in the circuit breaker, and the detection unit is used to detect the operation information of the main circuit, and based on the operation information, the power configuration information is determined, and the power configuration information is sent to the micro inverter, so that the micro inverter adjusts the power generation power of the photovoltaic module according to the power configuration information. That is, the present invention can adjust the power generation power in real time according to the operation status of the main circuit, avoid more electric energy flowing to the power grid, and then realize the zero-feedback network of the power grid, reducing the regulation pressure of the power grid.

[0123] It should be noted that, for the working process of each module and sub-module in the embodiment of the present invention, please refer to the corresponding description in the above embodiment, which will not be repeated here.

[0124] A circuit breaker is also provided in an embodiment of the present application for implementing the above-mentioned power generation control method.

[0125] In one implementation, a signal blocking unit is also integrated inside the circuit breaker.

[0126] An embodiment of the present application also provides a power generation control system, including the above-mentioned circuit breaker.

[0127] In one implementation, one end of the circuit breaker is connected to the power grid, and the other end of the circuit breaker is connected to a load bus, the load bus is connected to a load, and an AC socket (such as Figure 5 The balcony socket in the utility model is connected to the micro inverter through an AC line, and the other end of the micro inverter is connected to the photovoltaic module through a DC line.

[0128] The structure of the power generation control system in this embodiment can refer to Figure 5 For specific explanations, please refer to the above corresponding instructions.

[0129] An embodiment of the present application also provides a computer program product including computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements any power generation control method provided in the embodiment of the present application.

[0130] A computer-readable storage medium is also provided in an embodiment of the present application. The storage medium carries one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement any power generation control method provided in the embodiment of the present application.

[0131] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power generation control method, characterized in that: A control unit applied to a circuit breaker, wherein a detection unit is integrated inside the circuit breaker, and the power generation control method comprises: Using the detection unit to detect the operation information of the main circuit; Determining power configuration information based on the operation information; The power configuration information is sent to the micro inverter, so that the micro inverter adjusts the power generation power of the photovoltaic assembly according to the power configuration information.

2. The power generation control method according to claim 1, characterized in that: The detection unit includes a current detection unit; using the detection unit to detect the operation information of the main circuit includes: The current information of the main circuit detected by the current detection unit is obtained, wherein the current information includes the current type and the current magnitude; the operation information of the main circuit includes the current information of the main circuit.

3. The power generation control method according to claim 2, characterized in that: Determining power configuration information based on the operation information includes: In the case where the current type is a reverse current, determining a power limit ratio corresponding to the current magnitude; the reverse current is a current whose direction flows from the user side to the power grid; The power limit ratio is used as power configuration information.

4. The power generation control method according to claim 3, characterized in that: Determining a power limit ratio corresponding to the current magnitude includes: Obtaining the correspondence between the pre-configured current value and the power limit ratio; The power limit ratio corresponding to the current magnitude is determined from the corresponding relationship.

5. The power generation control method according to claim 3, characterized in that: Determining power configuration information based on the operation information further includes: When the duration of the current type being a forward current is not less than a time threshold and the micro-inverter is in a power reduction operation state, power limit release information is generated; the forward current is a current flowing from the grid to the user side; The power restriction release information is used as power configuration information.

6. The power generation control method according to claim 3, characterized in that: The circuit breaker is also integrated with a communication unit to send the power configuration information to the micro inverter, including: The power configuration information is sent to the micro inverter through the communication unit.

7. A power generation control device, characterized in that: A control unit applied to a circuit breaker, wherein the circuit breaker has an internal integrated detection unit, and the power generation control device comprises: A detection module, used to detect the operation information of the main circuit using the detection unit; An information determination module, configured to determine power configuration information based on the operation information; The power control module is used to send the power configuration information to the micro inverter so that the micro inverter adjusts the power generation power of the photovoltaic module according to the power configuration information.

8. A circuit breaker, characterized in that: Used to implement the power generation control method as described in any one of claims 1 to 6.

9. The circuit breaker according to claim 8, characterized in that A signal blocking unit is also integrated inside the circuit breaker.

10. A power generation control system, characterized in that: Comprising a circuit breaker as claimed in claim 8 or 9.

11. The power generation control system according to claim 10, characterized in that: One end of the circuit breaker is connected to the power grid, the other end of the circuit breaker is connected to the load bus, the load bus is connected to the load, the AC socket in the load is connected to the micro inverter through an AC line, and the other end of the micro inverter is connected to the photovoltaic module through a DC line.

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