A wind power generation control system and method applied to a microgrid

Abstract

The application discloses a wind power generation control system and method applied to a micro-grid, and the system comprises an energy storage module, a control center, a wind power generator and a pumped storage system. The energy storage module is used for receiving wind power generated by the wind power generator and providing load power to a load end. The control center is used for generating a fan operation charging control instruction and a fan operation energy storage control instruction according to a power consumption speed of the energy storage module. The wind power generator is used for generating wind power. The control center is further used for transmitting the wind power to the energy storage module and / or the pumped storage system. The pumped storage system is used for performing pumped storage operation by using the wind power and generating hydroelectric power by performing hydroelectric power generation. According to the power consumption condition of the energy storage module, the application dispatches the electric energy generated by the wind power generator to charge or be used for pumped storage, so that normal charging of the energy storage module is ensured, the pumped storage can be realized, and the emergency use during high power consumption is facilitated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of new energy micro-grid power generation, and particularly relates to a wind power generation control system and method applied to a micro-grid. BACKGROUND

[0002] Wind power generation is the most potential renewable energy with large-scale development at present. Various countries have invested huge amounts of funds in research and development, and actively promoted the industrialization process to develop market applications.

[0003] Wind power generation is greatly affected by the environment wind. The size and direction of the wind will seriously affect the power and frequency of power generation, causing great inconvenience to daily electricity use. At the same time, wind power generation will also encounter a small load power demand, and the generator is always in operation and continuous power generation state under the wind, causing adverse effects of overcharging of the power storage facility, and aggravating the wear of the generator set. SUMMARY

[0004] In order to solve the above problems, the application provides a wind power generation control system and method applied to a micro-grid, which adjusts the operation of the wind turbine generator set according to the energy storage capacity, delivers the generated wind power to the load end, and uses the surplus power for pumped storage.

[0005] To achieve the above purpose, the application provides the following solutions:

[0006] A wind power generation control system applied to a micro-grid, comprising an energy storage module, a control center, a wind power generator and a pumped storage system;

[0007] The energy storage module is used to receive wind power generated by the wind power generator, and provide load power to the load end;

[0008] The control center is used to generate a wind turbine operation charging control instruction according to the power consumption speed of the energy storage module, and generate a wind turbine operation energy storage control instruction;

[0009] The wind power generator is used to operate according to the wind turbine operation charging control instruction or the wind turbine operation energy storage control instruction to generate the wind power;

[0010] The control center is further used to transmit the wind power to the energy storage module according to the wind turbine operation charging control instruction, and transmit the wind power to the pumped storage system according to the wind turbine operation energy storage control instruction;

[0011] The pumped storage system is used to perform pumped storage operation and hydroelectric power generation using the wind power to generate water power.

[0012] Preferably, the energy storage module comprises a first group of energy storage modules and a second group of energy storage modules.

[0013] One of the energy storage modules provides the load power to the load end, marked as power transmission module, and the other energy storage module receives the wind power, marked as charging module.

[0014] Preferably, the control center generates the wind turbine operation charging control instruction according to the power consumption speed of the power transmission module and the charging amount of the charging module.

[0015] The wind turbine operation charging control instruction includes the number of wind turbines that need to be operated and the power consumption amount.

[0016] Preferably, the control center generates the wind turbine operation energy storage control instruction according to the wind turbine operation charging control instruction and the current natural wind data.

[0017] Preferably, the control center further comprises a power distribution device.

[0018] The power distribution device is used to transmit the wind power to the energy storage module and / or the pumped storage system according to the wind turbine operation charging control instruction and the wind turbine operation energy storage control instruction.

[0019] Preferably, the control center is further used to generate the wind turbine operation charging control instruction and / or the wind turbine operation energy storage control instruction according to the current time and historical load data.

[0020] In another aspect, in order to achieve the above-mentioned purpose, the application further provides a wind power control method applied to a micro-grid, comprising the following steps:

[0021] According to the power consumption speed of the energy storage module, a wind turbine operation charging control instruction and / or a wind turbine operation energy storage control instruction is generated.

[0022] According to the wind turbine operation charging control instruction or the wind turbine operation energy storage control instruction, the wind turbine is operated to generate wind power.

[0023] According to the wind turbine operation charging control instruction, the wind power is transmitted to the energy storage module, and according to the wind turbine operation energy storage control instruction, the wind power is transmitted to the pumped storage system.

[0024] Preferably, the energy storage module comprises a first group of energy storage modules and a second group of energy storage modules.

[0025] One of the energy storage modules provides the load power to the load end, marked as power transmission module, and the other energy storage module receives the wind power, marked as charging module.

[0026] According to the power consumption speed of the power transmission module and the required charging amount of the charging module, the fan operation charging control instruction is generated.

[0027] The fan operation charging control instruction includes the number of wind power generators required to operate and the required power amount.

[0028] Preferably, the fan operation charging control instruction and / or the fan operation energy storage control instruction are generated according to the current time and historical load data.

[0029] The beneficial effects of the present application are:

[0030] The present application discloses a wind power control system and method applied to a micro-grid, which uses an energy storage module as a power supply device for load power consumption, ensuring smooth load power consumption; according to the power consumption of the energy storage module, the power generated by the wind power generator is dispatched to charge or be used for pumped storage, which not only ensures the normal charging of the energy storage module, but also realizes pumped storage, facilitating emergency use when the power consumption is large; the charging speed is controlled in combination with the load power consumption time law, which reduces the battery charging compliance and improves the safety while ensuring the load power consumption. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the present application, the following briefly introduces the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 The structure schematic diagram of the wind power control system applied to the micro-grid of the first embodiment of the present application;

[0033] Figure 2 The flowchart of the wind power control method applied to the micro-grid of the second embodiment of the present application. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0036] As Figure 1As shown, it is a structure schematic diagram of a wind power generation control system applied to a micro-grid in the embodiment one of the present application, mainly composed of an energy storage module, a control center, a wind power generator and a pumped storage system.

[0037] Specifically, the energy storage module is configured to receive wind power generated by the wind power generator and provide load power to a load end. The control center is configured to generate a wind turbine operation charging control instruction according to a power consumption speed of the energy storage module. The control center is also configured to generate a wind turbine operation energy storage control instruction. The wind power generator is configured to operate according to the wind turbine operation charging control instruction or the wind turbine operation energy storage control instruction to generate wind power. The control center is also configured to transmit the wind power to the energy storage module according to the wind turbine operation charging control instruction and transmit the wind power to the pumped storage system according to the wind turbine operation energy storage control instruction. The pumped storage system is configured to perform pumped storage operation using the wind power and generate hydroelectric power through hydroelectric generation.

[0038] In the following, the structure composition and function implementation of each part in the embodiment are specifically described.

[0039] In the embodiment, the energy storage module adopts a large-capacity energy storage battery and is divided into two parts: a first group of energy storage modules and a second group of energy storage modules. In the embodiment, only one of the energy storage modules provides load power to the load end at the same time, which is marked as a power transmission module; the other energy storage module is only used to receive wind power, which is marked as a charging module. If it is full, it is marked as a standby power transmission module. Whether a energy storage module is in a power transmission state or a charging state is realized by a charge and discharge controller of the energy storage module. The charge and discharge controller collects residual power data of the power transmission module, switches to a charging state when the residual power is only 30%, and marks the charging module, while the standby power transmission module is converted to a power transmission module to provide power to the load end. In the embodiment, for convenience of description, it is assumed that the first energy storage module (marked as 1# module) is currently in a power transmission state and is marked as a power transmission module, while the second energy storage module (marked as 2# module) has completed charging and is marked as a standby power transmission module.

[0040] In this embodiment, the control center collects the power consumption speed of the power transmission module through the charge-discharge controller, that is, how much power is output in how long time. Continuing the above example, assume that 1# module is now transmitting power to the load end and the remaining power is as low as 30%, while 2# module is in full power state. At this time, the charge-discharge controller switches the working state of 1# module and 2# module, 1# module changes to charging module, and 2# module changes to power transmission module. At this time, the control center monitors the power consumption speed of 2# module, and then calculates the charging speed of 1# module according to the charging amount required by 1# module. Obviously, in order to ensure that 1# module is fully charged before 2# module runs out of power, the charging speed of 1# module needs to be increased. According to the charging speed and the charging amount required by 1# module, the fan operation charging control instruction is generated. The instruction includes the number of wind turbines that need to be operated and the required power, and the number of wind turbines is calculated according to the power generation capacity of each turbine. Of course, if the natural wind is large at this time, the wind turbines can be operated at full load to generate power, and the number can be reduced accordingly. If the natural wind is small, the wind turbines cannot generate power at full load, and the number of turbines needs to be increased accordingly. Further, for the remaining wind turbines, the fan operation charging control instruction (the number of turbines required for power generation) and the current natural wind data (wind speed affects the number of turbines) are used to generate the fan operation energy storage control instruction. The instruction transmits the wind power generated by the remaining wind turbines to the pumped storage system.

[0041] In order to normally transmit the wind power generated by the wind turbines to the energy storage module or the pumped storage system, the control center also sets a power transmission distribution device. The power transmission distribution device transmits the wind power to the energy storage module and / or the pumped storage system according to the fan operation charging control instruction (required power) and the fan operation energy storage control instruction (remaining wind power).

[0042] In this embodiment, a time-history power consumption mode is also added, that is, the fan operation charging control instruction and / or the fan operation energy storage control instruction is generated according to the current time and the historical load data (that is, the load power consumption data after this time in the past). The principle here is that, for example, if it is now in the evening, the load end will consume a large amount of power due to night lighting. At this time, according to the charging speed during the day, it is obviously impossible to complete the charging of the charging module before the power transmission module completes the power transmission. At this time, the charging speed of the charging module must be increased, and the fan operation charging control instruction and the fan operation energy storage control instruction need to be adjusted to transmit more wind power generated by the wind turbines to the charging module. For another example, it is now in the afternoon, and the load end consumes less power. The charging speed of the charging module can be appropriately lowered to reduce the loss of the energy storage module. At this time, the fan operation charging control instruction and the fan operation energy storage control instruction are adjusted to transmit more wind power generated by the wind turbines to the pumped storage system.

[0043] Embodiment Two

[0044] As shown in the flow chart of the wind power generation control method applied to the micro-grid of Embodiment Two of the present application, the method mainly comprises the following steps: Figure 2

[0045] S1. Generating a wind turbine operation charging control instruction and / or a wind turbine operation energy storage control instruction according to the power consumption rate of the energy storage module.

[0046] In this embodiment, the energy storage module is divided into a first group of energy storage modules and a second group of energy storage modules. At the same time, one of the energy storage modules provides load power to the load end, which is marked as a power transmission module, and the other energy storage module receives wind power, which is marked as a charging module. According to the power consumption rate of the power transmission module and the charging amount of the charging module, a wind turbine operation charging control instruction is generated. The instruction includes the number of wind turbines that need to be operated and the power consumption.

[0047] S2. According to the wind turbine operation charging control instruction or the wind turbine operation energy storage control instruction, the wind turbine is operated to generate wind power.

[0048] S3. According to the wind turbine operation charging control instruction, the wind power is transmitted to the energy storage module, and according to the wind turbine operation energy storage control instruction, the wind power is transmitted to the pumped storage system.

[0049] In addition, in this embodiment, the wind power control method further comprises:

[0050] Generating a wind turbine operation charging control instruction and / or a wind turbine operation energy storage control instruction according to the current time and historical load data.

[0051] The above-described embodiments are only descriptions of the preferred modes of the present application and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those of ordinary skill in the art shall fall within the protection scope determined by the claims of the present application.​

Claims

1. A wind power generation control system applied to a microgrid, characterized in that, The energy storage module, the control center, the wind turbine and the pumped storage system; The energy storage module is used for receiving wind power generated by the wind turbine and providing load power to a load end; the energy storage module comprises a first group of energy storage modules and a second group of energy storage modules; at the same time, one of the energy storage modules provides the load power to the load end, which is marked as a power transmission module, and the other energy storage module receives the wind power, which is marked as a charging module; The control center generates a wind turbine operation charging control instruction according to the power consumption speed of the power transmission module and the charging amount of the charging module; The control center is also used for generating a wind turbine operation energy storage control instruction; The wind turbine is used for operating according to the wind turbine operation charging control instruction or the wind turbine operation energy storage control instruction to generate the wind power; The control center is also used for transmitting the wind power to the energy storage module according to the wind turbine operation charging control instruction and transmitting the wind power to the pumped storage system according to the wind turbine operation energy storage control instruction; The pumped storage system is used for pumped storage operation and hydraulic power generation by using the wind power to generate water power.

2. The wind power control system applied to the micro-grid according to claim 1, wherein The wind turbine operation charging control instruction comprises the number of wind turbines that need to operate and the power consumption.

3. The wind power control system applied to the micro-grid according to claim 1, wherein The control center generates a wind turbine operation energy storage control instruction according to the wind turbine operation charging control instruction and current natural wind data.

4. The wind power control system applied to the micro-grid according to claim 1, wherein The control center further comprises a power distribution device; The power distribution device is used for transmitting the wind power to the energy storage module and / or the pumped storage system according to the wind turbine operation charging control instruction and the wind turbine operation energy storage control instruction.

5. The wind power control system applied to the micro-grid according to claim 1, wherein The control center is also used for generating the wind turbine operation charging control instruction and / or the wind turbine operation energy storage control instruction according to the current time and historical load data.

6. A wind power generation control method applied to a microgrid, characterized by, The steps comprise: Generating a wind turbine operation charging control instruction and / or a wind turbine operation energy storage control instruction according to the power consumption speed of the energy storage module; specifically, the energy storage module comprises a first group of energy storage modules and a second group of energy storage modules; at the same time, one of the energy storage modules provides the load power to the load end, which is marked as a power transmission module, and the other energy storage module receives the wind power, which is marked as a charging module; Generating the wind turbine operation charging control instruction according to the power consumption speed of the power transmission module and the charging amount of the charging module; The wind turbine operates according to the wind turbine operation charging control instruction or the wind turbine operation energy storage control instruction to generate the wind power; Transmitting the wind power to the energy storage module according to the wind turbine operation charging control instruction and transmitting the wind power to the pumped storage system according to the wind turbine operation energy storage control instruction.

7. The wind power generation control method for a microgrid according to claim 6, wherein The fan operation charging control instruction includes a required number of wind power generators to operate and a required power consumption. 8.The wind power generation control method for a microgrid according to claim 6, wherein, The wind power generation control method further includes: The fan operation charging control instruction and / or the fan operation energy storage control instruction are generated according to current time and historical load data.

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