Hot standby loss compensation methods, apparatus, and equipment applicable to wind power, solar power, and energy storage power plants.

Abstract

To provide a hot standby loss compensation method, device and equipment for balancing the hot standby electricity amount of wind power generation, solar power generation and energy storage power plants on-site. [Solution] The active power value, active power direction vector, and scheduling command power value of the grid connection point of the wind power generation, solar power generation, and energy storage power plant are obtained, and it is determined whether the scheduling command power value is equal to a preset threshold value. When the scheduling command power value is equal to the preset threshold value and the active power direction vector of the grid connection point of the wind power generation, solar power generation, and energy storage power plant flows from the grid connection point to the wind power generation, solar power generation, and energy storage power plant, the active power value of the grid connection point is taken as the active power scheduling value to be compensated, and power is distributed to the wind power generation, solar power generation, and energy storage power plant based on the active power scheduling value.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy stands, and specifically, to a hot standby loss compensation method, device and equipment applied to wind power generation, solar power generation, and energy storage power plants.

Background Art

[0002] For the "dual carbon" goal, the power generation capacity of new energy has increased rapidly, a large amount of new energy has been connected to the grid, and its variability, randomness and intermittency have brought great challenges to the safe and stable operation of the grid. Therefore, it has now become a solution idea to solve the absorption, digestion and stable operation of the grid by arranging a certain proportion of energy storage for new energy. A large amount of energy storage enters the grid. How to use energy storage to exert its maximum effect has become the most popular research topic at present. One use of energy storage at the current stage is as a time-space transfer medium for electrical energy to improve the absorption, digestion and utilization of new energy. Another use is to suppress the fluctuations of wind power generation and solar power generation and improve the grid-connected electrical energy quality of new energy stands. The third use is to directly receive grid scheduling, compensate for the shortage of grid electricity during the power consumption peak period, and achieve peak power supply.

[0003] At present, when a wind power generation, solar power generation, and energy storage integrated power plant still needs to turn off the power from the grid when the power plant discards electricity as a whole, it is used to maintain the hot standby state of the power generation equipment, and the energy storage of wind power generation, solar power generation, and energy storage itself cannot be used to compensate for the hot standby loss of the power generation equipment. As a result, the energy storage of wind power generation, solar power generation, and energy storage is in an idle state, and the power purchase cost of the wind power generation, solar power generation, and energy storage integrated power plant increases. Therefore, there is a need for a method to compensate for power loss by using the energy storage of wind power generation, solar power generation, and energy storage in the hot standby state of the new energy stand. [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] In view of this, the present invention provides a hot standby loss compensation method, apparatus, and equipment applicable to wind power generation, solar power generation, and energy storage power plants, solving the problem that power loss cannot be compensated using energy storage in wind power generation, solar power generation, and energy storage in the hot standby state of a new energy stand. [Means for solving the problem]

[0005] In the first aspect, the present invention is The steps include obtaining the active power value, active power direction vector, and scheduling command power value of the grid connection points of wind power generation, solar power generation, and energy storage power plants, A step of determining whether the scheduling instruction power value is equal to a preset threshold, When the scheduling command power value is equal to a preset threshold and the active power direction vector of the grid connection point of the wind power, solar power, and energy storage power plant flows from the grid connection point to the wind power, solar power, and energy storage power plant, the active power value of the grid connection point is set to the active power scheduling value to be compensated. The present invention provides a hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants, which includes the step of distributing power to wind power, solar power, and energy storage power plants based on active power scheduling values.

[0006] The hot-standby loss compensation method applicable to wind power, solar power, and energy storage power plants according to the present invention determines whether the scheduling command power value is equal to a preset threshold, sets the scheduling command power value of the grid connection point as equal to the preset threshold as the control target, and distributes power to the wind power, solar power, and energy storage power plants using the active power when the active power direction vector of the grid connection point flows from the grid connection point to the wind power, solar power, and energy storage power plants as the active power scheduling value. This eliminates the defect of losses due to grid power on / off switching during the hot-standby period of power generation equipment when the wind power, solar power, and energy storage power plants are in a power generation limiting state, solves the problem that power loss cannot be compensated using the energy storage of wind power, solar power, and energy storage power plants in a hot-standby state of the new energy stand, solves the problem of balancing the hot-standby electricity amount of wind power, solar power, and energy storage power plants on-site when the wind power, solar power, and energy storage power plants are in a power generation limiting state, and also achieves the objective of reducing the operating costs of wind power, solar power, and energy storage power plants and improving their effectiveness.

[0007] In one selectable embodiment, when the scheduling command power value is equal to a preset threshold and the active power direction vector of the grid connection point of the wind, solar, and energy storage power plant flows from the grid connection point to the wind, solar, and energy storage power plant, the step of setting the active power value of the grid connection point to the active power scheduling value to compensate for this is: The system includes the step of setting the active power value of a grid connection point to the active power scheduling value to compensate when the scheduling command power value is equal to a preset threshold and the active power direction vector of a grid connection point of a wind power, solar power, or energy storage power plant flows from the grid connection point to the wind power, solar power, or energy storage power plant within a preset time.

[0008] The hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants according to the present invention ensures the reliability of the judgment that the scheduling command power value is equal to a preset threshold and that the active power direction vector of the grid connection point of the wind power, solar power, and energy storage power plant flows from the grid connection point to the wind power, solar power, and energy storage power plant within a preset time, and provides a reliable basis for distributing power to the wind power, solar power, and energy storage power plants based on the subsequent active power scheduling value.

[0009] In one selectable embodiment, the wind power / solar power / energy storage power plant includes a solar power plant, a wind power plant, and an energy storage power plant. The step of distributing power to the wind power generation, solar power generation, and energy storage power plants based on the active power scheduling value is: The steps include obtaining the maximum power generation capacity of a solar power plant, the maximum power generation capacity of a wind power plant, and the remaining capacity of an energy storage power plant, The process includes the step of distributing power to solar power plants, wind power plants, and energy storage plants in a predetermined order, based on the maximum power generation capacity of solar power plants, the maximum power generation capacity of wind power plants, the remaining capacity of energy storage plants, and the active power scheduling value.

[0010] In one selectable embodiment, the step of distributing power to the solar power plant, wind power plant, and energy storage plant in a predetermined order based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, the remaining capacity of the energy storage plant, and the active power scheduling value is: The process includes the step of distributing power sequentially to solar power plants, wind power plants, and energy storage plants according to the distribution order, based on the maximum power generation capacity of solar power plants, the maximum power generation capacity of wind power plants, the remaining capacity of energy storage power plants, and the active power scheduling value.

[0011] The hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants according to the present invention distributes power sequentially to solar power plants, wind power plants, and energy storage power plants according to their distribution order, based on the maximum power generation capacity of solar power plants, the maximum power generation capacity of wind power plants, the remaining capacity of energy storage power plants, and the active power scheduling value. It also distributes power according to the priority of solar power plants, wind power plants, and energy storage power plants, and achieves the objective of distributing power according to the variability, randomness, and intermittency characteristics of power generation, thereby balancing the power demand within the wind power, solar power, and energy storage power plants.

[0012] In one selectable embodiment, a solar power plant includes a solar energy management platform and a solar inverter; a wind power plant includes a wind turbine energy management platform and a wind turbine unit; and an energy storage power plant includes an energy storage coordination controller and an energy storage unit. The step of distributing power sequentially to solar power plants, wind power plants, and energy storage plants according to the distribution order, based on the maximum power generation capacity of solar power plants, the maximum power generation capacity of wind power plants, the remaining capacity of energy storage plants, and the active power scheduling value, is as follows: The steps include transmitting active power scheduling values ​​to the solar energy management platform and causing the solar power inverter to execute the active power scheduling values ​​based on the maximum power generation capacity of the solar power plant, The steps include: transmitting the remaining active power scheduling value after the solar power plant's power has been distributed to the wind turbine energy management platform, and causing the wind turbine unit to execute the remaining active power scheduling value after the solar power plant's power has been distributed based on the wind turbine's maximum generating capacity; The process includes the steps of: transmitting the remaining active power scheduling values ​​to the energy storage coordination controller after the power from the solar power plant and the power from the wind power plant have been distributed, and causing the energy storage unit to execute the remaining active power scheduling values ​​after the power from the solar power plant and the power from the wind power plant have been distributed, based on the remaining capacity of the energy storage plant.

[0013] The hot-standby loss compensation method applicable to wind power, solar power, and energy storage power plants according to the present invention sequentially causes the solar power inverter to execute an active power scheduling value based on the maximum power generation capacity of the solar power plant, the wind power unit to execute the remaining active power scheduling value after the power from the solar power plant has been distributed based on the maximum power generation capacity of the wind turbine power plant, and the energy storage unit to execute the remaining active power scheduling value after the power from the solar power plant and the power from the wind turbine power plant has been distributed based on the remaining capacity of the energy storage power plant. This ensures a continuous power supply to electrical equipment during the hot-standby period, realizes the objective of the wind power, solar power, and energy storage power plant supplying power according to electricity demand using solar power, wind power, and energy storage, achieves a power supply balance within the wind power, solar power, and energy storage power plant, thereby eliminating the need for power generation equipment to switch the grid on and off during the hot-standby period, saving costs and improving the operational efficiency of the wind power, solar power, and energy storage power plant.

[0014] In one selectable embodiment, a solar power plant includes a solar power inverter, a wind power plant includes a wind power unit, and an energy storage power plant includes an energy storage unit. The step of distributing power to solar power plants, wind power plants, and energy storage plants in a predetermined order, based on the maximum power generation capacity of solar power plants, the maximum power generation capacity of wind power plants, the remaining capacity of energy storage plants, and the active power scheduling value, is as follows: When an active power scheduling value is executed by a solar power inverter based on the maximum power generation capacity of a solar power plant, and the remaining active power scheduling value after the power from the solar power plant has been distributed is executed by a wind power unit based on the maximum power generation capacity of a wind power plant, the energy storage unit is used in conjunction with the solar power inverter and the wind power unit based on the remaining capacity of the energy storage power plant to suppress power fluctuations of the solar power inverter and the wind power unit.

[0015] The hot standby loss compensation method applicable to wind power generation, solar power generation, and energy storage power plants according to the present invention involves causing the solar power inverter to execute an active power scheduling value based on the maximum power generation capacity of the solar power plant, and causing the wind power unit to execute the remaining active power scheduling value after the power from the solar power plant has been distributed based on the maximum power generation capacity of the wind power plant. In this method, the energy storage unit is used in conjunction with the solar power inverter and the wind power unit based on the remaining capacity of the energy storage power plant, thereby achieving the objective that the energy storage power plant can replenish power fluctuations when power fluctuations occur during power generation at the solar power plant and wind power plant. This suppresses the variability, randomness, and intermittency of the solar power plant and wind power plant, ensures that power supply to equipment is not interrupted during the hot standby period, and improves the reliability of the power supply.

[0016] In one selectable embodiment, a hot standby loss compensation method applicable to wind, solar, and energy storage power plants is: If the scheduling command power value is not equal to a preset threshold, the system further includes the step of distributing power to wind power, solar power, and energy storage power plants based on the scheduling command power value.

[0017] The hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants according to the present invention achieves the objective of returning to a normal command distribution mode when the scheduling command power value is not equal to a preset threshold by distributing power to the wind power, solar power, and energy storage power plants based on the scheduling command power value when the scheduling command power value is not equal to a preset threshold, thereby improving the flexibility of sending out commands based on the scheduling command power value and maximizing the utilization of wind power, solar power, and energy storage power plants.

[0018] In a second aspect, the present invention is A grid connection point energy collection module for acquiring the active power value, active power direction vector, and scheduling command power value of grid connection points of wind power, solar power, and energy storage power plants, A determination module for determining whether the scheduling command power value is equal to a preset threshold, A loss compensation module for setting the active power scheduling value to compensate for the active power of a grid connection point when the scheduling command power value is equal to a preset threshold and the active power direction vector of the grid connection point of a wind power, solar power, or energy storage power plant flows from the grid connection point to the wind power, solar power, or energy storage power plant, and The present invention provides a hot standby loss compensation device applicable to wind power, solar power, and energy storage power plants, including a distribution module for distributing power to wind power, solar power, and energy storage power plants based on active power scheduling values.

[0019] In a third aspect, the present invention provides a computer device including a memory and a processor, where the memory and the processor are communicably connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to implement the hot standby loss compensation method applicable to the wind power generation, solar power generation, and energy storage power plant of the first aspect or any corresponding embodiment thereof.

[0020] In a fourth aspect, the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute the hot standby loss compensation method applicable to the wind power generation, solar power generation, and energy storage power plant of the first aspect or any corresponding embodiment thereof.

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings necessary for use in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

Brief Description of the Drawings

[0022] [Figure 1] It is a flowchart of the hot standby loss compensation method applicable to the wind power generation, solar power generation, and energy storage power plant according to an embodiment of the present invention. [Figure 2] It is a flowchart of another hot standby loss compensation method applicable to the wind power generation, solar power generation, and energy storage power plant according to an embodiment of the present invention. [Figure 3] It is a flowchart of yet another hot standby loss compensation method applicable to the wind power generation, solar power generation, and energy storage power plant according to an embodiment of the present invention. [Figure 4] It is a network topology diagram when the wind power generation, solar power generation, and energy storage power plant according to an embodiment of the present invention is connected to a grid scheduling center. [Figure 5] This is a structural block diagram of a hot-standby loss compensation device applied to wind power, solar power, and energy storage power plants according to an embodiment of the present invention. [Figure 6] This is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. [Modes for carrying out the invention]

[0023] To further clarify the object, technical solution, and advantages of the embodiments of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. All other embodiments that a person skilled in the art can obtain without creative effort based on the embodiments of the present invention are within the scope of the protection of the present invention.

[0024] According to embodiments of the present invention, embodiments of a hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants are provided, wherein the steps shown in the flowchart of the drawings can be executed in a computer system of a set of computer-executable instructions, and although the flowchart shows a logical order, in some cases the steps shown or described may be executed in an order different from that presented herein.

[0025] This embodiment provides a hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants, which can be used in wind power, solar power, and energy storage power plants. Figure 1 is a flowchart of the hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants according to an embodiment of the present invention, and as shown in Figure 1, the flow includes the following steps.

[0026] Step S101: Obtain the active power value, active power direction vector, and scheduling command power value for the grid connection points of the wind power, solar power, and energy storage power plants.

[0027] Specifically, an integrated wind, solar, and energy storage power plant (abbreviated as a wind, solar, and energy storage power plant) includes a wind, solar, and energy storage coordinated controller. The wind, solar, and energy storage power plant is connected to a grid scheduling center, and the wind, solar, and energy storage coordinated controller distributes power generation tasks based on scheduling commands issued from the grid scheduling center. A grid connection point is a connection point where the wind, solar, and energy storage power plant accesses the higher-level grid or other power systems. As shown in Figure 4, the grid connection point energy collection module can acquire the active power value and active power direction vector of the grid connection point of the wind, solar, and energy storage power plant, and can receive scheduling command power values ​​issued from the grid scheduling center.

[0028] In step S102, it is determined whether the scheduling instruction power value is equal to a preset threshold.

[0029] Specifically, a pre-set threshold can be set to 0 to determine whether the scheduling command power value is equal to 0. If the scheduling command power value is equal to 0, it indicates that the grid scheduling center has not issued scheduling commands for power distribution to wind power, solar power, and energy storage power plants, and that these power plants do not need to transport electricity to the grid. The control target is to have an active power scheduling value of 0 at the grid connection point, and power balancing is performed within the wind power, solar power, and energy storage power plants.

[0030] In step S103, when the scheduling command power value is equal to a preset threshold and the active power direction vector of the grid connection point of the wind power, solar power, and energy storage power plant flows from the grid connection point to the wind power, solar power, and energy storage power plant, the active power value of the grid connection point is set as the active power scheduling value to be compensated.

[0031] Specifically, the control objective is for the active power scheduling value of the grid connection point to be 0. When the scheduling command power value is equal to 0, and the active power direction vector of the grid connection point of the wind power, solar power, and energy storage power plant flows from the grid connection point to the wind power, solar power, and energy storage power plant, the active power scheduling value to compensate for the active power value of the grid connection point is set.

[0032] Step S104: Power is distributed to wind power generation, solar power generation, and energy storage power plants based on the active power scheduling value.

[0033] Specifically, when the wind power, solar power, and energy storage coordinated controller receives the active power scheduling value, it distributes power based on the active power scheduling value, causing the power generation equipment within the wind power, solar power, and energy storage power plant to generate power based on the active power scheduling value.

[0034] The hot-standby loss compensation method applied to wind, solar, and energy storage power plants according to this embodiment determines whether the scheduling command power value is equal to a preset threshold, sets the grid connection point scheduling command power value to be equal to a preset threshold as the control target, and distributes power to the wind, solar, and energy storage power plants using the active power when the active power direction vector of the grid connection point flows from the grid connection point to the wind, solar, and energy storage power plants as the active power scheduling value. This eliminates the defect of losses due to grid power on / off switching during the hot-standby period of power generation equipment when the wind, solar, and energy storage power plants are in a power generation limiting state, solves the problem that power loss cannot be compensated using the energy storage of wind, solar, and energy storage power plants in a hot-standby state of the new energy stand, solves the problem of balancing the hot-standby electricity amount of wind, solar, and energy storage power plants on-site when the wind, solar, and energy storage power plants are in a power generation limiting state, and also achieves the objective of reducing the operating costs of wind, solar, and energy storage power plants and improving their effectiveness.

[0035] This embodiment provides a hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants, which can be used in wind power, solar power, and energy storage power plants. Figure 2 is a flowchart of the hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants according to an embodiment of the present invention, and as shown in Figure 2, the process includes the following steps.

[0036] In step S201, the active power value, active power direction vector, and scheduling command power value are obtained for the grid connection points of the wind power, solar power, and energy storage power plants. For details, please refer to step S101 of the embodiment shown in Figure 1, and the explanation is omitted here.

[0037] In step S202, it is determined whether the scheduling instruction power value is equal to a preset threshold. For details, please refer to step S102 of the embodiment shown in Figure 1, and the explanation will be omitted here.

[0038] In step S203, when the scheduling command power value is equal to a preset threshold and the active power direction vector of the grid connection point of the wind power, solar power, and energy storage power plant flows from the grid connection point to the wind power, solar power, and energy storage power plant, the active power value of the grid connection point is set as the active power scheduling value to be compensated.

[0039] Specifically, step S203 above is, The system includes the step of setting the active power value of a grid connection point to the active power scheduling value to compensate when the scheduling command power value is equal to a preset threshold and the active power direction vector of a grid connection point of a wind power, solar power, or energy storage power plant flows from the grid connection point to the wind power, solar power, or energy storage power plant within a preset time.

[0040] Specifically, the pre-set time is determined according to the actual situation and is not particularly limited here. For example, if the pre-set time is set to t (t=20)s, and the scheduling command power value is equal to 0, and at the same time the active power direction vector of the grid connection point of the wind power, solar power, and energy storage power plant flows from the grid connection point to the wind power, solar power, and energy storage power plant, and does not change within the pre-set time (e.g., 20s), then the acquired active power value of the grid connection point is to be used as the active power scheduling value to compensate.

[0041] The hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants according to this embodiment ensures the reliability of the judgment that the scheduling command power value is equal to a preset threshold and that the active power direction vector of the grid connection point of the wind power, solar power, and energy storage power plant flows from the grid connection point to the wind power, solar power, and energy storage power plant within a preset time, and provides a reliable basis for power distribution to the wind power, solar power, and energy storage power plants based on the subsequent active power scheduling value.

[0042] In step S204, power is distributed to wind power generation, solar power generation, and energy storage power plants based on the active power scheduling value.

[0043] Specifically, wind power, solar power, and energy storage power plants include solar power plants, wind power plants, and energy storage power plants.

[0044] Step S204 described above includes the following steps:

[0045] Step S2041: Obtain the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, and the remaining capacity of the energy storage power plant.

[0046] Specifically, the maximum power generation capacity of a solar power plant refers to the amount of electricity generated by the solar power plant within a unit of time at a certain installed capacity, and in this embodiment, the maximum power generation capacity of a solar power plant refers to the amount of electricity generated by the solar power plant in one day. The maximum power generation capacity of a wind turbine power plant refers to the amount of electricity generated by the wind turbine within a unit of time at a certain capacity. In this embodiment, the maximum power generation capacity of a wind turbine power plant refers to the amount of electricity generated by the wind turbine power plant in one day. The remaining capacity of an energy storage power plant refers to the proportion of the nominal capacity accounted for by the usable electricity of the battery in the energy storage power plant.

[0047] In step S2042, power is distributed to the solar power plant, wind power plant, and energy storage plant according to a predetermined order, based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, the remaining capacity of the energy storage plant, and the active power scheduling value.

[0048] In one selectable embodiment, step S2042 is: The process includes the step of distributing power sequentially to solar power plants, wind power plants, and energy storage plants according to the distribution order, based on the maximum power generation capacity of solar power plants, the maximum power generation capacity of wind power plants, the remaining capacity of energy storage power plants, and the active power scheduling value.

[0049] Specifically, based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind turbine power plant, the remaining capacity of the energy storage power plant, and the active power scheduling value, the wind turbine, solar power plant, and energy storage coordinated controller within the wind turbine, solar power plant, and energy storage power plant sequentially distributes power according to the distribution order of the solar power plant, wind turbine power plant, and energy storage power plant.

[0050] The hot standby loss compensation method applied to wind power, solar power, and energy storage power plants according to this embodiment distributes power sequentially to solar power plants, wind power plants, and energy storage power plants according to their distribution order, based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, the remaining capacity of the energy storage power plant, and the active power scheduling value. It also distributes power according to the priority of solar power plants, wind power plants, and energy storage power plants, and achieves the objective of distributing power according to the variability, randomness, and intermittency characteristics of power generation, thereby balancing the power demand within the wind power, solar power, and energy storage power plants.

[0051] In one selectable embodiment, as shown in Figure 4, a solar power plant includes a solar energy management platform and a solar inverter; a wind power plant includes a wind turbine energy management platform and a wind turbine unit; and an energy storage power plant includes an energy storage coordination controller and an energy storage unit.

[0052] The step of distributing power sequentially to solar power plants, wind power plants, and energy storage plants according to the distribution order, based on the maximum power generation capacity of solar power plants, the maximum power generation capacity of wind power plants, the remaining capacity of energy storage plants, and the active power scheduling value, includes the following steps:

[0053] Step a1: The active power scheduling value is transmitted to the solar energy management platform, and the solar power inverter is instructed to execute the active power scheduling value based on the maximum power generation capacity of the solar power plant.

[0054] Specifically, as shown in Figure 4, the wind power / solar power / energy storage coordinated controller transmits an active power scheduling value to the solar energy management platform. The solar energy management platform receives the active power scheduling value distributed by the wind power / solar power / energy storage coordinated controller and transmits it to the solar power inverter. The solar energy management platform then executes the active power scheduling value by controlling the solar power inverter to generate power based on the maximum power generation capacity of the solar power plant. During execution, the solar energy management platform provides the wind power / solar power / energy storage coordinated controller with real-time feedback on the maximum power generation capacity of the solar power inverter currently generating power.

[0055] Step a2: The wind turbine energy management platform receives the remaining active power scheduling value after the solar power plant's power has been distributed, and the wind turbine unit is instructed to execute the remaining active power scheduling value after the solar power plant's power has been distributed, based on the wind turbine's maximum generating capacity.

[0056] Specifically, as shown in Figure 4, the wind turbine energy management platform receives the remaining active power scheduling value after the power from the solar power plant has been distributed, transmitted from the wind, solar, and energy storage coordinated controller. It then transmits this remaining active power scheduling value to the wind turbine unit, which generates power, thereby executing the remaining active power scheduling value after the power from the solar power plant has been distributed. During execution, the wind turbine energy management platform provides real-time feedback to the wind, solar, and energy storage coordinated controller on the maximum power generation capacity of the wind turbine unit currently generating power.

[0057] Step a3: The energy storage coordination controller receives the remaining active power scheduling values ​​after the power from the solar power plant and the power from the wind power plant have been distributed, and the energy storage unit is instructed to execute the remaining active power scheduling values ​​after the power from the solar power plant and the power from the wind power plant have been distributed, based on the remaining capacity of the energy storage plant.

[0058] Specifically, as shown in Figure 4, the energy storage coordination controller receives the remaining active power scheduling values ​​after the power from the solar power plant and the power from the wind turbine power plant have been distributed, transmits these values ​​to the energy storage units, and ensures that the remaining energy in the energy storage units compensates for the remaining active power scheduling values ​​after the power from the solar power plant and the power from the wind turbine power plant have been distributed. During operation, the energy storage coordination controller provides real-time feedback of the remaining energy storage units that are generating power to the wind turbine power plant and the energy storage coordination controller.

[0059] Furthermore, if the amount of electricity that a solar power plant can generate is greater than or equal to the active power scheduling value distributed by the wind power / solar power / energy storage coordinated controller, it is not necessary to distribute it to the wind power plant and the energy storage plant. If both the solar power plant and the wind power plant are unable to generate electricity, the remaining capacity of the energy storage plant will execute the active power scheduling value distributed by the wind power / solar power / energy storage coordinated controller to ensure normal power consumption of the power generation equipment during the hot standby period.

[0060] In one selectable embodiment, as shown in Figure 4, the step of distributing power to the solar power plant, wind power plant, and energy storage plant in a predetermined order based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, the remaining capacity of the energy storage plant, and the active power scheduling value is as follows: When an active power scheduling value is executed by a solar power inverter based on the maximum power generation capacity of a solar power plant, and the remaining active power scheduling value after the power from the solar power plant has been distributed is executed by a wind power unit based on the maximum power generation capacity of a wind power plant, the energy storage unit is used in conjunction with the solar power inverter and the wind power unit based on the remaining capacity of the energy storage power plant to suppress power fluctuations of the solar power inverter and the wind power unit.

[0061] Specifically, when solar power plants and wind power plants generate electricity, they are susceptible to weather conditions, which makes them prone to power generation instability. In other words, power generation variability, randomness, and intermittency occur. To compensate for the power generation variability, randomness, and intermittency that occurs when solar power plants and wind power plants generate electricity, when the solar power inverter executes the active power scheduling values ​​and the wind power unit executes the remaining active power scheduling values ​​after the solar power plant's power has been distributed, it is necessary to use an energy storage power plant in conjunction with the solar power plant and wind power plant to suppress the power variability, randomness, and intermittency of the solar power inverter and wind power unit.

[0062] The hot standby loss compensation method applicable to the wind power, solar power, and energy storage power plant according to this embodiment involves, in order, having the solar power inverter execute an active power scheduling value based on the maximum power generation capacity of the solar power plant, having the wind power unit execute the remaining active power scheduling value after the solar power plant's power has been distributed based on the wind turbine power plant's maximum power generation capacity, and having the energy storage unit execute the remaining active power scheduling value after the solar power plant's power has been distributed and after the wind turbine power plant's power has been distributed based on the remaining energy storage power plant's capacity. This ensures a continuous power supply to electrical equipment during the hot standby period, achieving the objective of the wind power, solar power, and energy storage power plant supplying power according to electricity demand using solar power, wind power, and energy storage, achieving a power supply balance within the wind power, solar power, and energy storage power plant, thereby preventing the power generation equipment from becoming hot standby. - By eliminating the need to switch the grid on and off during standby periods, costs are saved, and the operational efficiency of wind, solar, and energy storage power plants is improved. When the active power scheduling values ​​for solar power inverters are executed based on the maximum power generation capacity of solar power plants, and the remaining active power scheduling values ​​after the power from solar power plants has been distributed are executed by wind power units based on the maximum power generation capacity of wind power plants, the energy storage units are used in conjunction with the solar power inverters and wind power units based on the remaining capacity of the energy storage power plant. This achieves the objective that the energy storage power plant can replenish power fluctuations when power fluctuations occur during power generation at solar and wind power plants. In this way, the energy storage power plant suppresses the variability, randomness, and intermittency of solar and wind power plants, ensures that the power supply to equipment is not interrupted during hot standby periods, and improves the reliability of the power supply.

[0063] This embodiment provides a hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants, which can be used in wind power, solar power, and energy storage power plants. Figure 3 is a flowchart of the hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants according to an embodiment of the present invention, and as shown in Figure 3, the process includes the following steps.

[0064] In step S301, the active power value, active power direction vector, and scheduling command power value are obtained for the grid connection points of the wind power, solar power, and energy storage power plants. For details, please refer to step S201 of the embodiment shown in Figure 2, and the explanation is omitted here.

[0065] In step S302, it is determined whether the scheduling instruction power value is equal to a preset threshold. For details, please refer to step S202 of the embodiment shown in Figure 2, and the explanation will be omitted here.

[0066] In step S303, when the scheduling command power value is equal to a preset threshold and the active power direction vector of the grid connection point of the wind power, solar power, and energy storage power plant flows from the grid connection point to the wind power, solar power, and energy storage power plant, the active power value of the grid connection point is set to the active power scheduling value to compensate for it. For details, please refer to step S203 of the embodiment shown in Figure 2, and the explanation is omitted here.

[0067] In step S304, power is distributed to wind power, solar power, and energy storage power plants based on the active power scheduling value. For details, please refer to step S204 of the embodiment shown in Figure 2, and the explanation will be omitted here.

[0068] In step S305, if the scheduling command power value is not equal to a preset threshold, power is distributed to wind power, solar power, and energy storage power plants based on the scheduling command power value.

[0069] Specifically, the pre-set threshold is equal to 0. If the scheduling command power value is not equal to 0, the scheduling command power value transmitted from the grid scheduling center is sent to the wind power / solar power / energy storage coordinated controller. The wind power / solar power / energy storage coordinated controller receives the scheduling command power value transmitted from the grid scheduling center and transmits it to the solar energy management platform, wind turbine energy management platform, and energy storage coordinated controller, respectively, causing the solar power inverter, wind power unit, and / or energy storage unit to execute the scheduling command power value.

[0070] The hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants according to this embodiment achieves the objective of returning to a normal command distribution mode when the scheduling command power value is not equal to a preset threshold, by distributing power to the wind power, solar power, and energy storage power plants based on the scheduling command power value when the scheduling command power value is not equal to a preset threshold, thereby improving the flexibility of sending commands based on the scheduling command power value and maximizing the utilization of wind power, solar power, and energy storage power plants.

[0071] This embodiment further provides a hot standby loss compensation device applicable to wind, solar, and energy storage power plants, which is used to implement the above embodiment and preferred embodiments, and which has been described, will not be described again. As used below, the term “module” can implement a combination of software and / or hardware with a predetermined function. The devices described in the following embodiments are preferably implemented in software, but implementation in hardware, or a combination of software and hardware, is also possible and conceivable.

[0072] This embodiment provides a hot standby loss compensation device applicable to wind power, solar power, and energy storage power plants, as shown in Figure 5. A grid connection point energy collection module 501 for acquiring the active power value, active power direction vector, and scheduling command power value of the grid connection points of wind power generation, solar power generation, and energy storage power plants, A determination module 502 for determining whether the scheduling command power value is equal to a preset threshold, A loss compensation module 503 is provided to make the active power scheduling value to be compensated when the scheduling command power value is equal to a preset threshold and the active power direction vector of the grid connection point of a wind power, solar power, or energy storage power plant flows from the grid connection point to the wind power, solar power, or energy storage power plant, and It includes a first distribution module 504 for distributing power to wind power, solar power, and energy storage power plants based on active power scheduling values.

[0073] In some selectable embodiments, the first distribution module 504 is An acquisition unit for acquiring the maximum power generation capacity of a solar power plant, the maximum power generation capacity of a wind power plant, and the remaining capacity of an energy storage power plant, The system includes a distribution unit for distributing power to solar power plants, wind power plants, and energy storage plants in a predetermined order, based on the maximum power generation capacity of solar power plants, the maximum power generation capacity of wind power plants, the remaining capacity of energy storage plants, and the active power scheduling value.

[0074] In some selectable embodiments, the distribution unit is A first distribution subunit transmits active power scheduling values ​​to the solar energy management platform and causes the solar power inverter to execute the active power scheduling values ​​based on the maximum power generation capacity of the solar power plant, A second distribution subunit transmits the remaining active power scheduling value after the solar power plant's power has been distributed to the wind turbine energy management platform, and causes the wind turbine unit to execute the remaining active power scheduling value after the solar power plant's power has been distributed based on the wind turbine's maximum generating capacity, A third distribution subunit transmits the remaining active power scheduling values ​​to the energy storage coordination controller after the power from the solar power plant and the power from the wind power plant have been distributed, and causes the energy storage unit to execute the remaining active power scheduling values ​​after the power from the solar power plant and the power from the wind power plant have been distributed, based on the remaining capacity of the energy storage plant. When an active power scheduling value is executed by the solar power inverter based on the maximum power generation capacity of the solar power plant, and the remaining active power scheduling value after the power from the solar power plant has been distributed based on the maximum power generation capacity of the wind power plant is executed by the wind power unit, the energy storage unit is used in conjunction with the solar power inverter and the wind power unit based on the remaining amount of the energy storage power plant, and a fourth distribution subunit is included to suppress power fluctuations of the solar power inverter and the wind power unit.

[0075] Hot standby loss compensation devices applicable to wind power, solar power, and energy storage power plants are The system further includes a second distribution module for distributing power to wind, solar, and energy storage power plants based on the scheduling command power value if the scheduling command power value is not equal to a preset threshold.

[0076] Further functional descriptions of each of the above modules and units are the same as those in the corresponding embodiments described above, and therefore, redundant explanations are omitted here.

[0077] The hot standby loss compensation device applicable to wind, solar, and energy storage power plants in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory running one or more software or fixed programs, and / or other devices capable of providing the above functions.

[0078] Embodiments of the present invention further provide computer equipment comprising a hot standby loss compensation device applicable to wind power, solar power, and energy storage power plants as shown in Figure 5.

[0079] As shown in Figure 6, which is a schematic diagram of the structure of a computer device according to an optional embodiment of the present invention, the computer device includes one or more processors 10, memory 20, and interfaces used to connect each component, including high-speed and low-speed interfaces. Each component is connected to communicate with one another using different buses and may be mounted on a common motherboard or in other ways as needed. The processors can process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of a GUI to an external input / output device (e.g., a display device coupled to the interface). In some optional embodiments, multiple processors and / or multiple buses may be used together with multiple memories and multiple memory, as needed. Similarly, multiple computer devices may be connected, each providing a portion of the required operations (e.g., a server array, a set of blade servers, or a multiprocessor system). In Figure 6, one processor 10 is used as an example.

[0080] The processor 10 may be a central processing unit, a network processor, or a combination thereof. However, the processor 10 may further include hardware chips. The hardware chips may be application-specific integrated circuits, programmable logic devices, or a combination thereof. The programmable logic devices may be complex programmable logic devices, field programmable logic gate arrays, general-purpose array logic, or any combination thereof.

[0081] However, the memory 20 stores instructions that can be executed by at least one processor 10, thereby enabling at least one processor 10 to execute and implement the method shown in the above embodiment.

[0082] Memory 20 may include a program storage area capable of storing an operating system and application programs required for at least one function, and a data storage area capable of storing data created in accordance with the use of the computer equipment. Memory 20 may also include high-speed random-access memory and may further include non-temporary memory such as at least one disk storage device, flash memory device, or other non-temporary solid-state storage device. In some selectable embodiments, memory 20 may include memory that is optionally remotely installed relative to the processor 10, and these remote memories may be connected to the computer equipment via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0083] Memory 20 may include volatile memory such as random access memory, or non-volatile memory such as flash memory, hard disk, or solid-state drive, and memory 20 may further include combinations of the above types of memory.

[0084] The computer equipment further includes an input device 30 and an output device 40. The processor 10, memory 20, input device 30 and output device 40 can be connected by a bus or by other means, with Figure 6 showing a bus connection as an example.

[0085] The input device 30 can receive input numerical or character information and generate input key signals relating to user settings and function control of the computer equipment, such as a touchscreen, keypad, mouse, trackpad, pointing stick, one or more mouse buttons, trackball, joystick, etc. The output device 40 may include a display device, auxiliary lighting device (e.g., LEDs), and haptic feedback device (e.g., vibration motor), etc. The display device includes, but is not limited to, liquid crystal displays, light-emitting diodes, displays, and plasma displays. In some optional embodiments, the display device may be a touchscreen.

[0086] Embodiments of the present invention further provide a computer-readable storage medium, and the methods according to embodiments of the present invention may be implemented in hardware and firmware, or may be implemented in a recordable manner on a storage medium, or may be implemented as computer code downloaded over a network, originally stored on a remote storage medium or a non-temporary machine-readable storage medium and stored on a local storage medium, thereby the methods described herein may be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. However, the storage medium may be a magnetic disk, an optical disk, read-only memory, random access memory, flash memory, a hard disk, or a solid-state drive, and furthermore, the storage medium may include combinations of the above types of memory. To understand that a computer, processor, microprocessor controller, or programmable hardware includes a storage component capable of storing or receiving software or computer code, and when the software or computer code is accessed and executed by the computer, processor, or hardware, the methods described in the embodiments are implemented.

[0087] While embodiments of the present invention have been described with reference to the drawings, those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, and any such changes and modifications will fall within the scope defined in the attached claims.

Claims

1. A hot standby loss compensation method applicable to wind power, solar power, and energy storage power plants, The steps include obtaining the active power value, active power direction vector, and scheduling command power value of the grid connection points of wind power generation, solar power generation, and energy storage power plants, The steps include determining whether the scheduling command power value is equal to a preset threshold, The steps include setting the active power scheduling value of the grid connection point to the active power scheduling value to compensate when the scheduling command power value is equal to a preset threshold and the active power direction vector of the grid connection point of the wind power, solar power, or energy storage power plant flows from the grid connection point to the wind power, solar power, or energy storage power plant, and The step includes distributing power to the wind power generation, solar power generation, and energy storage power plants based on the active power scheduling value, The aforementioned wind power generation, solar power generation, and energy storage power plants include solar power plants, wind turbine power plants, and energy storage power plants. The step of distributing power to the wind power generation, solar power generation, and energy storage power plants based on the active power scheduling value is: The steps include obtaining the maximum power generation capacity of a solar power plant, the maximum power generation capacity of a wind power plant, and the remaining capacity of an energy storage power plant, The process includes the step of distributing power to the solar power plant, wind power plant, and energy storage plant in a predetermined order, based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, the remaining capacity of the energy storage plant, and the active power scheduling value. The step of distributing power to the solar power plant, wind power plant, and energy storage plant in a predetermined order, based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, the remaining capacity of the energy storage plant, and the active power scheduling value, is as follows: The step includes distributing power sequentially to the solar power plant, wind power plant, and energy storage plant according to the distribution order, based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, the remaining capacity of the energy storage plant, and the active power scheduling value. The solar power plant includes a solar energy management platform and an inverter for solar power generation; the wind power plant includes a wind power energy management platform and a wind power generation unit; and the energy storage power plant includes an energy storage coordination controller and an energy storage unit. The step of distributing power sequentially to the solar power plant, wind power plant, and energy storage plant according to the distribution order, based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, the remaining capacity of the energy storage plant, and the active power scheduling value, is as follows: The steps include transmitting the active power scheduling value to the solar energy management platform and causing the solar power inverter to execute the active power scheduling value based on the maximum power generation capacity of the solar power plant, The steps include transmitting the remaining active power scheduling value after the power from the solar power plant has been distributed to the wind turbine energy management platform, and causing the wind turbine unit to execute the remaining active power scheduling value after the power from the solar power plant has been distributed based on the maximum power generation capacity of the wind turbine, A method characterized by comprising the steps of transmitting the remaining active power scheduling values ​​to the energy storage coordination controller after the power from the solar power plant and the power from the wind power plant have been distributed, and causing the energy storage unit to execute the remaining active power scheduling values ​​after the power from the solar power plant and the power from the wind power plant have been distributed, based on the remaining amount of the energy storage power plant.

2. When the scheduling command power value is equal to a preset threshold and the active power direction vector of the grid connection point of the wind power, solar power, and energy storage power plant flows from the grid connection point to the wind power, solar power, and energy storage power plant, the step of setting the active power value of the grid connection point to the active power scheduling value to compensate for this is: The method according to claim 1, characterized in that when the scheduling command power value is equal to a preset threshold and the active power direction vector of the grid connection point of the wind power generation, solar power generation, and energy storage power plant flows from the grid connection point to the wind power generation, solar power generation, and energy storage power plant within a preset time, the active power value of the grid connection point is set to an active power scheduling value to compensate for that.

3. The solar power plant includes an inverter for solar power generation, the wind power plant includes a wind power generation unit, and the energy storage power plant includes an energy storage unit. The step of distributing power to the solar power plant, wind power plant, and energy storage plant in a predetermined order, based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, the remaining capacity of the energy storage plant, and the active power scheduling value, is as follows: The method according to claim 1, further comprising the step of having the solar power inverter execute the active power scheduling value based on the maximum power generation capacity of the solar power plant, and having the wind power unit execute the remaining active power scheduling value after the power of the solar power plant has been distributed based on the maximum power generation capacity of the wind power plant, wherein the energy storage unit is used in conjunction with the solar power inverter and the wind power unit based on the remaining amount of the energy storage power plant to suppress power fluctuations of the solar power inverter and the wind power unit.

4. The method according to claim 1, further comprising the step of distributing power to the wind power generation, solar power generation, and energy storage power plants based on the scheduling command power value if the scheduling command power value is not equal to a preset threshold.

5. A hot standby loss compensation device applicable to wind power, solar power, and energy storage power plants, A grid connection point energy collection module for acquiring the active power value, active power direction vector, and scheduling command power value of grid connection points of wind power generation, solar power generation, and energy storage power plants, A determination module for determining whether the scheduling command power value is equal to a preset threshold, A loss compensation module for setting the active power scheduling value to compensate for the active power of a grid connection point when the scheduling command power value is equal to a preset threshold and the active power direction vector of the grid connection point of a wind power, solar power, or energy storage power plant flows from the grid connection point to the wind power, solar power, or energy storage power plant, and the active power of the grid connection point, Includes a distribution module for distributing power to wind power generation, solar power generation, and energy storage power plants based on the active power scheduling value, The aforementioned wind power generation, solar power generation, and energy storage power plants include solar power plants, wind turbine power plants, and energy storage power plants. The step of distributing power to the wind power generation, solar power generation, and energy storage power plants based on the active power scheduling value is: The steps include obtaining the maximum power generation capacity of a solar power plant, the maximum power generation capacity of a wind power plant, and the remaining capacity of an energy storage power plant, The process includes the step of distributing power to the solar power plant, wind power plant, and energy storage plant in a predetermined order, based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, the remaining capacity of the energy storage plant, and the active power scheduling value. The step of distributing power to the solar power plant, wind power plant, and energy storage plant in a predetermined order, based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, the remaining capacity of the energy storage plant, and the active power scheduling value, is as follows: The step includes distributing power sequentially to the solar power plant, wind power plant, and energy storage plant according to the distribution order, based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, the remaining capacity of the energy storage plant, and the active power scheduling value. The solar power plant includes a solar energy management platform and an inverter for solar power generation; the wind power plant includes a wind power energy management platform and a wind power generation unit; and the energy storage power plant includes an energy storage coordination controller and an energy storage unit. The step of distributing power sequentially to the solar power plant, wind power plant, and energy storage plant according to the distribution order, based on the maximum power generation capacity of the solar power plant, the maximum power generation capacity of the wind power plant, the remaining capacity of the energy storage plant, and the active power scheduling value, is as follows: The steps include transmitting the active power scheduling value to the solar energy management platform and causing the solar power inverter to execute the active power scheduling value based on the maximum power generation capacity of the solar power plant, The steps include transmitting the remaining active power scheduling value after the power from the solar power plant has been distributed to the wind turbine energy management platform, and causing the wind turbine unit to execute the remaining active power scheduling value after the power from the solar power plant has been distributed based on the maximum power generation capacity of the wind turbine, The apparatus is characterized by comprising the steps of transmitting the remaining active power scheduling values ​​to the energy storage coordination controller after the power from the solar power plant and the power from the wind power plant have been distributed, and causing the energy storage unit to execute the remaining active power scheduling values ​​after the power from the solar power plant and the power from the wind power plant have been distributed, based on the remaining amount of the energy storage power plant.

6. Computer equipment, A computer device comprising memory and a processor, wherein the memory and the processor are connected to each other in a communicative manner, computer instructions are stored in the memory, and the processor executes the computer instructions to perform a hot standby loss compensation method applicable to a wind power, solar power, or energy storage power plant as described in any one of claims 1 to 4.

7. A computer-readable storage medium, A computer-readable storage medium characterized by storing computer instructions for causing a computer to execute a hot standby loss compensation method applicable to a wind power, solar power, or energy storage power plant as described in any one of claims 1 to 4.

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