A new energy power control system and method

Abstract

The present application discloses a new energy power control system and method. The method includes: by obtaining the power parameters of a photovoltaic generator, an adjustable load, and each battery, determining a coordinated control mode for the power control of each battery according to a first parameter, and then based on the coordinated control mode corresponding to each battery, combining a second parameter to determine a target photovoltaic output power, a charging power, and an adjustable load regulation power, sending the target photovoltaic output power to the photovoltaic generator, sending the adjustable load regulation power to the adjustable load, and sending the corresponding charging power to each battery. It can be seen that by analyzing the state of charge of the battery and adopting different coordinated control modes for power control, it is avoided that when the battery charge is nearly full, the same power regulation strategy is still used to adjust the power of the battery, the photovoltaic generator, and the adjustable load, effectively avoiding the decline of the charging regulation ability of the battery, thereby ensuring the safe and stable operation of the new energy power system.

Description

Technical Field

[0001] This application relates to the field of power system control, and more specifically, to a new energy power control system and method. Background Art

[0002] With the increase in power consumption demand, a larger-scale power system is required for power supply, and the proportion of equipment for power generation connected to the power system has increased sharply. For example, a large number of wind power generators and photovoltaic power generators need to be connected to the power system. The power output of photovoltaic power generators is unstable, and it is difficult to accurately predict the charging power of the battery and the actual power consumption of the load in real time, which cannot ensure the safety and stability of system operation.

[0003] For the current new energy power system, the power control of photovoltaic power generators currently adopts the maximum power point tracking (MPPT) mode, and the battery is used to adjust the system power. However, when the state of charge of the battery is nearly full, it will be unable to charge. At this time, since there is still surplus power in the system and the battery cannot charge and adjust, the charging and adjusting ability of the battery drops sharply, thus reducing the safety and stability of the system.

[0004] Therefore, in order to ensure the safe and stable operation of the new energy power system, it is necessary to coordinately control the photovoltaic power generators, batteries, and adjustable loads in the new energy power system. Summary of the Invention

[0005] In view of the above problems, this application is proposed to provide a new energy power control system and method to ensure the safe and stable operation of the new energy power system.

[0006] To achieve the above object, the following specific solutions are proposed:

[0007] A new energy power control system includes: a power grid, a photovoltaic power generator, an adjustable load, a bus, a power regulation controller, and multiple batteries. Among them, the photovoltaic power generator, the adjustable load, the power grid, and each battery are connected to the bus. The power regulation controller is communicatively connected to the photovoltaic power generator, the adjustable load, and each battery respectively. The power grid conducts electrical energy interaction with the photovoltaic power generator, the adjustable load, and each battery respectively through the bus.

[0008] The photovoltaic power generator is configured to send its output power in the maximum power point tracking (MPPT) mode and the power generation power at the current moment to the power regulation controller.

[0009] Each battery is configured to send the rated interaction power of the battery for electrical energy interaction with the power grid to the power regulation controller.

[0010] The adjustable load is used to send the rated power of the adjustable load and the power consumption of the adjustable load at the current moment to the power regulation controller;

[0011] The power regulation controller is used to determine the difference between the power generation power and the power consumption power as the system dynamic power, determine the difference between the power consumption power and the rated power as the translation power, and determine the coordinated control mode of the power control of each battery according to the first parameter. Based on the coordinated control mode corresponding to each battery, according to the second parameter, determine the target photovoltaic output power, charging power, and adjustable load regulation power, and send the target photovoltaic output power to the photovoltaic generator for the photovoltaic generator to set the target photovoltaic output power, send the charging power to the battery for the battery to set the charging power, and send the adjustable load regulation power to the adjustable load for the adjustable load to set the adjustable load regulation power;

[0012] Wherein, the first parameter is one or any combination of the state of charge of each battery, the photovoltaic output power of the photovoltaic generator at the current moment, and the translation power;

[0013] The second parameter is any combination of the output power, the system dynamic power, the rated interaction power of the battery, and the translation power.

[0014] Optionally, the process by which the power regulation controller determines the coordinated control mode of the power control of each battery according to the first parameter includes:

[0015] When the state of charge of each battery is lower than the preset state of charge threshold, the power regulation controller determines that the first control mode of the power control is the coordinated control mode of the battery;

[0016] When there is a battery whose state of charge is not lower than the preset state of charge threshold and the photovoltaic output power of the photovoltaic generator at the current moment is the output power, the power regulation controller determines that the second control mode of the power control is the coordinated control mode of the battery;

[0017] When there is a battery whose state of charge is not lower than the preset state of charge threshold and the translation power is 0, the power regulation controller determines that the third control mode of the power control is the coordinated control mode of the battery.

[0018] Optionally, the process by which the power regulation controller determines the target photovoltaic output power, charging power, and adjustable load regulation power according to the second parameter based on the coordinated control mode corresponding to each battery includes:

[0019] When the coordinated control mode of each battery is the first control mode, the power regulation controller determines the target photovoltaic output power, charging power, and adjustable load regulation power by using the following formula:

[0020]

[0021] where, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power.

[0022] Optionally, the process by which the power regulation controller determines the target photovoltaic output power, charging power, and adjustable load regulation power based on the coordinated control mode corresponding to each battery and according to the second parameter includes:

[0023] When the coordinated control mode of each battery is the second control mode, the power regulation controller determines the target photovoltaic output power, charging power, and adjustable load regulation power by using the following formula:

[0024]

[0025] where, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power, ΔP L is the translation power.

[0026] Optionally, the process by which the power regulation controller determines the target photovoltaic output power, charging power, and adjustable load regulation power based on the coordinated control mode corresponding to each battery and according to the second parameter includes:

[0027] When the coordinated control mode of each battery is the third control mode, the power regulation controller determines the target photovoltaic output power, charging power, and adjustable load regulation power by using the following formula:

[0028]

[0029] where, P PV is the target photovoltaic output power, PMPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power, and k is a preset mode regulation coefficient between 0 and 1.

[0030] A new energy power control method is applied to a power regulation controller. The power regulation controller is communicatively connected to a photovoltaic generator, an adjustable load, and multiple batteries in a power control system. The photovoltaic generator, the adjustable load, the power grid in the power control system, and each battery are connected to a bus in the power control system. The power grid performs electrical energy interaction with the photovoltaic generator, the adjustable load, and each battery through the bus respectively. The power control system includes the power grid, the photovoltaic generator, the adjustable load, the bus, and several batteries;

[0031] The method includes:

[0032] Obtain the output power of the photovoltaic generator in the MPPT mode and the power generation power of the photovoltaic generator at the current moment;

[0033] Obtain the rated power of the adjustable load and the power consumption power of the adjustable load at the current moment;

[0034] Determine the difference between the power generation power and the power consumption power as the system dynamic power;

[0035] Determine the difference between the power consumption power and the rated power as the translation power;

[0036] For each battery, obtain the rated interaction power of the battery for electrical energy interaction with the power grid;

[0037] According to the first parameter, determine the coordinated control mode of the power control of each battery. The first parameter is a combination of one or any several of the state of charge of each battery, the photovoltaic output power of the photovoltaic generator at the current moment, and the translation power;

[0038] Based on the coordinated control mode corresponding to each battery, according to the second parameter, determine the target photovoltaic output power, charging power, and adjustable load regulation power. The second parameter is a combination of any several of the output power, the system dynamic power, the rated interaction power of the battery, and the translation power;

[0039] Send the target photovoltaic output power to the photovoltaic generator for the photovoltaic generator to set the target photovoltaic output power;

[0040] Send the charging power to the battery for the battery to set the charging power;

[0041] Send the adjustable load regulation power to the adjustable load for the adjustable load to set the adjustable load regulation power.

[0042] Optionally, determining the coordinated control mode of the power control of each battery according to the first parameter includes:

[0043] When the state of charge of each battery is lower than the preset state of charge threshold, determine that the first control mode of the power control is the coordinated control mode of the battery;

[0044] When there is a battery whose state of charge is not lower than the preset state of charge threshold and the photovoltaic output power of the photovoltaic generator at the current moment is the output power, determine that the second control mode of the power control is the coordinated control mode of the battery;

[0045] When there is a battery whose state of charge is not lower than the preset state of charge threshold and the translation power is 0, determine that the third control mode of the power control is the coordinated control mode of the battery.

[0046] Optionally, based on the coordinated control mode corresponding to each battery, determining the target photovoltaic output power, charging power, and adjustable load regulation power according to the second parameter includes:

[0047] When the coordinated control mode of each battery is the first control mode, use the following formula to determine the target photovoltaic output power, charging power, and adjustable load regulation power:

[0048]

[0049] Where, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power.

[0050] Optionally, based on the coordinated control mode corresponding to each battery, determining the target photovoltaic output power, charging power, and adjustable load regulation power according to the second parameter includes:

[0051] When the coordinated control mode of each battery is the second control mode, use the following formula to determine the target photovoltaic output power, charging power, and adjustable load regulation power:

[0052]

[0053] Among them, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power, ΔP L is the translation power.

[0054] Optionally, based on the coordinated control mode corresponding to each battery, determine the target photovoltaic output power, charging power, and adjustable load regulation power according to the second parameter, including:

[0055] When the coordinated control mode of each battery is the third control mode, use the following formula to determine the target photovoltaic output power, charging power, and adjustable load regulation power:

[0056]

[0057] Among them, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power, and k is a preset mode adjustment coefficient between 0 and 1.

[0058] With the above technical solutions, the present application obtains the output power of the photovoltaic generator in the MPPT mode, and the power generation power of the photovoltaic generator at the current moment, obtains the rated power of the adjustable load, and the power consumption power of the adjustable load at the current moment, determines the difference between the power generation power and the power consumption power as the system dynamic power, determines the difference between the power consumption power and the rated power as the translation power. For each battery, obtains the rated interaction power of the battery's power interaction with the power grid, and determines the coordinated control mode of the power control of each battery according to the first parameter, where the first parameter is one or any combination of the state of charge of each battery, the photovoltaic output power of the photovoltaic generator at the current moment, and the translation power. Further, based on the coordinated control mode corresponding to each battery, determines the target photovoltaic output power, the charging power, and the adjustable load regulation power according to the second parameter, where the second parameter is any combination of the output power, the system dynamic power, the rated interaction power of the battery, and the translation power. Furthermore, sends the target photovoltaic output power to the photovoltaic generator for the photovoltaic generator to set the target photovoltaic output power, sends the charging power to the battery for the battery to set the charging power, and sends the adjustable load regulation power to the adjustable load for the adjustable load to set the adjustable load regulation power. Thus, by analyzing the state of charge of the battery and adopting different coordinated control modes of power control, it is avoided that when the battery charge is nearly full, the same power adjustment strategy is still used to adjust the power of the battery, the photovoltaic generator, and the adjustable load, effectively avoiding the decline of the battery's charging regulation ability, thereby ensuring the safe and stable operation of the new energy power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0060] Figure 1 FIG. is a system architecture diagram for implementing new energy power control provided by an embodiment of the present application;

[0061] Figure 2 FIG. is an optional signaling flow for implementing new energy power control provided by an embodiment of the present application;

[0062] Figure 3 FIG. is a schematic flowchart for a power regulation controller to implement new energy power control provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0063] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0064] Figure 1 An optional system architecture for realizing new energy power control provided by an embodiment of the present application is as Figure 1 shown. This system architecture may include:

[0065] Power grid 10, bus 20, photovoltaic generator 30, adjustable load 40, power regulation controller 60, and multiple batteries 50. Among them, the photovoltaic generator 30, the adjustable load 40, the power grid 10, and each battery 50 are all connected to the bus 20. The power regulation controller 60 is respectively communicatively connected to the photovoltaic generator 30, the adjustable load 40, and each battery 50 to achieve data intercommunication. The power grid 10 performs electrical energy interaction with the photovoltaic generator 30, the adjustable load 40, and each battery 50 through the bus 20.

[0066] Specifically, the photovoltaic generator 30 can be used to send the output power of the photovoltaic generator 30 in the MPPT mode and the power generation power of the photovoltaic generator 30 at the current moment to the power regulation controller 60.

[0067] The adjustable load 40 can be used to send the rated power of the adjustable load 40 and the power consumption power of the adjustable load 40 at the current moment to the power regulation controller 60.

[0068] Each battery 50 can be used to send the rated interaction power of the battery 50 for electrical energy interaction with the power grid 10 to the power regulation controller 60.

[0069] The power regulation controller 60 can be used to determine that the difference between the power generation power of the photovoltaic generator 30 at the current moment and the power consumption power of the adjustable load 40 at the current moment is the system dynamic power, determine that the difference between the power consumption power of the adjustable load 40 at the current moment and the rated power of the adjustable load 40 is the translation power, and determine the coordinated control mode of the power control of each battery 50 according to the first parameter. Based on the coordinated control mode corresponding to each battery 50, determine the target photovoltaic output power, charging power, and adjustable load regulation power according to the second parameter, and send the target photovoltaic output power to the photovoltaic generator 30 for the photovoltaic generator 30 to set the target photovoltaic output power, send the charging power to the battery 50 for the battery 50 to set the charging power, and send the adjustable load regulation power to the adjustable load 40 for the adjustable load 40 to set the adjustable load regulation power.

[0070] Among them, the first parameter is one or any combination of the state of charge of each battery 50, the photovoltaic output power of the photovoltaic generator 30 at the current moment, and the translation power, and the second parameter is any combination of the output power, the system dynamic power, the rated interaction power of the battery, and the translation power.

[0071] It can be understood that the power regulation controller 60 is the power control decision center of the new energy power control system. Therefore, the power regulation controller 60 can determine the target photovoltaic output power that the photovoltaic generator 30 needs to adopt, the adjustable load regulation power that the adjustable load 40 needs to adopt, and the charging power that each battery 50 needs to adopt based on the power parameters of the photovoltaic generator 30, the adjustable load 40, and each battery 50, and give feedback.

[0072] Based on Figure 1 the system architecture shown, Figure 2 shows an optional signaling process for implementing the new energy power control method provided by the embodiment of the present application. Referring to Figure 2 , this process may include:

[0073] Step S101, the photovoltaic generator 30 determines its output power in the MPPT mode and its power generation power at the current moment.

[0074] Specifically, the output power of the photovoltaic generator 30 in the MPPT mode is the full consumption of energy output by the photovoltaic generator 30, and there is no light abandonment phenomenon. Therefore, the photovoltaic generator 30 outputs the maximum power in this mode.

[0075] Step S102, the photovoltaic generator 30 sends the output power and the power generation power to the power regulation controller 60.

[0076] Step S103, the battery 50 determines its rated interaction power for electrical energy interaction with the power grid 10.

[0077] Specifically, the new energy power control system includes multiple batteries 50. Since the positions of each battery 50 in the topological structure of the power control system are different, the rated interaction power of each battery 50 for electrical energy interaction with the power grid 10 is also different.

[0078] Step S104, the battery 50 sends the rated interaction power to the power regulation controller 60.

[0079] Step S105, the adjustable load 40 determines its rated power and its power consumption at the current moment.

[0080] It is understandable that the power consumption of the adjustable load 40 is adjustable, and the corresponding power consumption can be adopted according to the power consumption event. Since the rated power of the adjustable load 40 is fixed, the power consumption of the adjustable load 40 at the current moment can be different from the rated power.

[0081] Step S106: The adjustable load 40 sends the rated power and the power consumption to the power regulation controller 60.

[0082] Step S107: The power regulation controller 60 determines that the difference between the power generation power and the power consumption is the system dynamic power.

[0083] Specifically, subtracting the power consumption of the adjustable load 40 at the current moment from the power generation power of the photovoltaic generator 30 at the current moment, the obtained power is the remaining power of the new energy power control system at the current moment, which can be stored by the device with the power storage function (such as the battery 50).

[0084] Step S108: The power regulation controller 60 determines that the difference between the power consumption and the rated power is the translation power.

[0085] Step S109: The power regulation controller 60 determines the coordinated control mode of the power control of each battery 50 according to the first parameter.

[0086] Among them, the first parameter can be one or any combination of the state of charge of each battery 50, the photovoltaic output power of the photovoltaic generator 30 at the current moment, and the translation power.

[0087] Specifically, there are the following three situations for the coordinated control mode of the power control of each battery 50 determined according to the first parameter:

[0088] First, when the state of charge of each battery 50 is lower than the preset state of charge threshold, it is determined that the first control mode of the power control is the coordinated control mode of the battery 50.

[0089] Specifically, the preset state of charge threshold can represent the lowest state of charge at which the charging regulation ability of the battery is not damaged. At this time, the coordinated control mode of the power control adopted for each battery 50 can be the first control mode, and the first control mode can represent that all batteries 50 can be charged with high quality.

[0090] Second, when there is a battery 50 whose state of charge is not lower than the preset state of charge threshold and the photovoltaic output power of the photovoltaic generator 30 at the current moment is the output power, it is determined that the second control mode of the power control is the coordinated control mode of the battery 50.

[0091] Specifically, when the state of charge of the battery 50 in the system is not lower than the preset state of charge threshold, there is a possibility of being damaged in the charging regulation ability, and the photovoltaic generator 30 currently outputs power with full energy consumption, then the second control mode can be adopted for power control at this time. The second control mode can indicate that the charging of all batteries 50 slows down and the adjustable load 40 increases the power sharing.

[0092] Thirdly, when the state of charge of the battery 50 is not lower than the preset state of charge threshold and the translation power is 0, determine that the third control mode of power control is the coordinated control mode of the battery 50.

[0093] Specifically, when the state of charge of the battery 50 in the system is not lower than the preset state of charge threshold, there is a possibility of being damaged in the charging regulation ability, and the adjustable load 40 maintains the current rated power, then the third control mode can be adopted for power control at this time. The third control mode can indicate that the charging of all batteries 50 slows down and the photovoltaic generator 30 no longer outputs power with full energy consumption.

[0094] Step S110: Based on the coordinated control mode corresponding to each battery 50, the power regulation controller 60 determines the target photovoltaic output power, charging power, and adjustable load regulation power according to the second parameter.

[0095] Specifically, the power regulation controller 60 can determine the target photovoltaic output power, charging power, and adjustable load regulation power based on different coordinated control modes, such as the following three cases:

[0096] 1) When the coordinated control mode of each battery is the first control mode, the power regulation controller uses the following formula to determine the target photovoltaic output power, charging power, and adjustable load regulation power:

[0097]

[0098] Among them, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, and P L is the adjustable load regulation power.

[0099] 2) When the coordinated control mode of each battery is the second control mode, the power regulation controller uses the following formula to determine the target photovoltaic output power, charging power, and adjustable load regulation power:

[0100]

[0101] Among them, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power, ΔP L is the translation power.

[0102] When the coordinated control mode of each battery is the third control mode, the power regulation controller determines the target photovoltaic output power, charging power, and adjustable load regulation power by using the following formula:

[0103]

[0104] Among them, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power, and k is a preset mode regulation coefficient between 0 and 1.

[0105] Step S111: The power regulation controller 60 sends the target photovoltaic output power to the photovoltaic generator 30.

[0106] Step S112: The photovoltaic generator 30 sets the target photovoltaic output power.

[0107] Step S113: The power regulation controller 60 sends the charging power to the battery 50.

[0108] Step S114: The battery 50 sets the charging power.

[0109] Step S115: The power regulation controller 60 sends the adjustable load regulation power to the adjustable load 40.

[0110] Step S116: The adjustable load 40 sets the adjustable load regulation power.

[0111] The new energy power control method provided by the embodiments of the present application comprehensively analyzes the state of charge of the battery 50, the current photovoltaic output power of the photovoltaic generator 30, and the translation power through the power parameters of the photovoltaic generator 30, each battery 50, and the adjustable load 40, and adopts different coordinated control modes of power control to avoid still using the same power adjustment strategy to adjust the power of the battery, photovoltaic generator, and adjustable load when the battery charge is nearly full, effectively avoiding the decline of the charging regulation ability of the battery, thereby ensuring the safe and stable operation of the new energy power system.

[0112] Next, from the perspective of the power regulation controller 60, the embodiments of the present application will further introduce the new energy power control solution.

[0113] Combined Figure 3 As described above, the new energy power control method of the present application may include the following steps:

[0114] Step S201: Obtain the output power of the photovoltaic generator 30 in the MPPT mode and the power generation power of the photovoltaic generator 30 at the current moment.

[0115] Specifically, the acquisition process of the power regulation controller 60 may be that the photovoltaic generator 30 determines its output power in the MPPT mode and the power generation power at the current moment and sends them.

[0116] Step S202: Obtain the rated power of the adjustable load 40 and the power consumption power of the adjustable load 40 at the current moment.

[0117] Specifically, the acquisition process of the power regulation controller 60 may be that the adjustable load 40 determines its rated power and the power consumption power at the current moment and sends them.

[0118] Step S203: Determine the difference between the power generation power and the power consumption power as the system dynamic power.

[0119] Step S204: Determine the difference between the power consumption power and the rated power as the translation power.

[0120] The above steps S203-S204 correspond to steps S108-S109 in the foregoing embodiments one by one. For details, refer to the foregoing introduction and will not be elaborated here.

[0121] Step S205: For each battery, obtain the rated interaction power of the battery 50 for electrical energy interaction with the power grid 10.

[0122] Specifically, the acquisition process of the power regulation controller 60 may be that each battery 50 determines its rated interaction power for electrical energy interaction with the power grid 10 and sends it.

[0123] Step S206: Determine the coordinated control mode for power control of each battery 50 according to the first parameter.

[0124] Step S207: Based on the coordinated control mode corresponding to each battery 50, determine the target PV output power, charging power, and adjustable load regulation power according to the second parameter.

[0125] The above steps S206 - S207 correspond one - to - one with steps S109 - S110 in the foregoing embodiment. For details, refer to the foregoing introduction and will not be elaborated here.

[0126] Step S208: Send the target PV output power to the PV generator 30.

[0127] Specifically, send the target PV output power to the PV generator 30 for the PV generator 30 to set the target PV output power.

[0128] Step S209: Send the charging power to the battery 50.

[0129] Specifically, send the charging power to the battery 50 for the battery to set the charging power. A corresponding charging power can be set for each battery 50.

[0130] Step S210: Send the adjustable load regulation power to the adjustable load 40.

[0131] Specifically, send the adjustable load regulation power to the adjustable load 40 for the adjustable load 40 to set the adjustable load regulation power.

[0132] The new - energy power control method provided by the embodiment of the present application analyzes the state of charge of the battery 50, the current PV output power of the PV generator 30, and the shifting power, obtains three coordinated control modes, and determines the target PV output power of the PV generator 30, the charging power of each battery 50, and the adjustable load regulation power of the adjustable load 40 according to different coordinated control modes, effectively avoiding the decline of the charging regulation ability of the battery, thereby ensuring the safe and stable operation of the power system.

[0133] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0134] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The embodiments can be combined as needed, and the same or similar parts can be referred to each other.

[0135] 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 can 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 rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new energy power control system, characterized in that, Including: A power grid, a photovoltaic generator, an adjustable load, a bus, a power regulation controller, and multiple batteries. Among them, the photovoltaic generator, the adjustable load, the power grid, and each battery are connected to the bus. The power regulation controller is communicatively connected to the photovoltaic generator, the adjustable load, and each battery respectively. The power grid performs power interaction with the photovoltaic generator, the adjustable load, and each battery respectively through the bus. The photovoltaic generator is configured to send its output power in the maximum power point tracking (MPPT) mode and the power generation power at the current moment to the power regulation controller. Each battery is configured to send the rated interaction power of the battery for power interaction with the power grid to the power regulation controller. The adjustable load is configured to send the rated power of the adjustable load and the power consumption power of the adjustable load at the current moment to the power regulation controller. The power regulation controller is configured to determine the difference between the power generation power and the power consumption power as the system dynamic power, determine the difference between the power consumption power and the rated power as the translation power, and determine the coordinated control mode of the power control of each battery according to a first parameter. Based on the coordinated control mode corresponding to each battery, according to a second parameter, determine the target photovoltaic output power, the charging power, and the adjustable load regulation power, and send the target photovoltaic output power to the photovoltaic generator for the photovoltaic generator to set the target photovoltaic output power, send the charging power to the battery for the battery to set the charging power, and send the adjustable load regulation power to the adjustable load for the adjustable load to set the adjustable load regulation power. Wherein, the first parameter is one or any combination of the state of charge of each battery, the photovoltaic output power of the photovoltaic generator at the current moment, and the translation power. The second parameter is any combination of the output power, the system dynamic power, the rated interaction power of the battery, and the translation power. The process by which the power regulation controller determines the coordinated control mode of the power control of each battery according to the first parameter includes: When the state of charge of each battery is lower than a preset state of charge threshold, the power regulation controller determines the first control mode of the power control as the coordinated control mode of the battery. When there is a battery whose state of charge is not lower than the preset state of charge threshold and the photovoltaic output power of the photovoltaic generator at the current moment is the output power, the power regulation controller determines the second control mode of the power control as the coordinated control mode of the battery. When there is a battery whose state of charge is not lower than the preset state of charge threshold and the translation power is 0, the power regulation controller determines the third control mode of the power control as the coordinated control mode of the battery. The process by which the power regulation controller determines the target photovoltaic output power, the charging power, and the adjustable load regulation power according to the second parameter based on the coordinated control mode corresponding to each battery includes: When the coordinated control mode of each battery is the first control mode, the power regulation controller determines the target PV output power, charging power, and adjustable load regulation power using the following formula: Among them, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power; The process by which the power regulation controller determines the target PV output power, charging power, and adjustable load regulation power based on the coordinated control mode corresponding to each battery and according to the second parameter includes: When the coordinated control mode of each battery is the second control mode, the power regulation controller determines the target PV output power, charging power, and adjustable load regulation power using the following formula: Among them, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power, ΔP L is the translation power; The process by which the power regulation controller determines the target PV output power, charging power, and adjustable load regulation power based on the coordinated control mode corresponding to each battery and according to the second parameter includes: When the coordinated control mode of each battery is the third control mode, the power regulation controller determines the target PV output power, charging power, and adjustable load regulation power using the following formula: Among them, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power, and k is a preset mode regulation coefficient between 0 and 1.

2. A new energy power control method, characterized in that, Applied to a power regulation controller, the power regulation controller is communicatively connected to a PV generator, an adjustable load, and multiple batteries in a power control system. The PV generator, the adjustable load, the power grid in the power control system, and each battery are all connected to a bus in the power control system. The power grid performs electrical energy interaction with the PV generator, the adjustable load, and each battery through the bus. The power control system includes the power grid, the PV generator, the adjustable load, the bus, and several batteries; The method includes: Obtaining the output power of the PV generator in the MPPT mode and the power generation power of the PV generator at the current moment; Obtaining the rated power of the adjustable load and the power consumption power of the adjustable load at the current moment; Determining the difference between the power generation power and the power consumption power as the system dynamic power; Determining the difference between the power consumption power and the rated power as the translation power; For each battery, obtaining the rated interaction power of the battery for electrical energy interaction with the power grid; Determining the coordinated control mode of the power control of each battery according to the first parameter, where the first parameter is a combination of one or any several of the state of charge of each battery, the PV output power of the PV generator at the current moment, and the translation power; Based on the coordinated control mode corresponding to each battery, determining the target PV output power, charging power, and adjustable load regulation power according to the second parameter, where the second parameter is a combination of any several of the output power, the system dynamic power, the rated interaction power of the battery, and the translation power; Sending the target PV output power to the PV generator for the PV generator to set the target PV output power; Sending the charging power to the battery for the battery to set the charging power; Sending the adjustable load regulation power to the adjustable load for the adjustable load to set the adjustable load regulation power; The determining the coordinated control mode of the power control of each battery according to the first parameter includes: When the state of charge of each battery is lower than the preset state of charge threshold, determine that the first control mode of power control is the coordinated control mode of the battery; When there is a battery whose state of charge is not lower than the preset state of charge threshold and the photovoltaic output power of the photovoltaic generator at the current moment is the output power, determine that the second control mode of power control is the coordinated control mode of the battery; When there is a battery whose state of charge is not lower than the preset state of charge threshold and the translation power is 0, determine that the third control mode of power control is the coordinated control mode of the battery; Based on the coordinated control mode corresponding to each battery, determine the target photovoltaic output power, charging power, and adjustable load regulation power according to the second parameter, including: When the coordinated control mode of each battery is the first control mode, use the following formula to determine the target photovoltaic output power, charging power, and adjustable load regulation power: Among them, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power; The determining of the target photovoltaic output power, charging power, and adjustable load regulation power based on the coordinated control mode corresponding to each battery and according to the second parameter includes: When the coordinated control mode of each battery is the second control mode, use the following formula to determine the target photovoltaic output power, charging power, and adjustable load regulation power: Among them, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power, ΔP L is the translation power; The determining of the target photovoltaic output power, charging power, and adjustable load regulation power based on the coordinated control mode corresponding to each battery and according to the second parameter includes: When the coordinated control mode of each battery is the third control mode, use the following formula to determine the target photovoltaic output power, charging power, and adjustable load regulation power: Among them, P PV is the target photovoltaic output power, P MPPT is the output power, n is the total number of batteries included in the power control system, P Si is the charging power of each battery, P Ni is the rated interaction power of the battery, ΔP is the system dynamic power, P L is the adjustable load regulation power, and k is a preset mode regulation coefficient between 0 and 1.

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