A source-grid-load-storage system based on wind power generation and photovoltaic power generation

Abstract

The present invention relates to the field of electric energy storage technology, and specifically to a source-grid-load-storage system based on wind power generation and photovoltaic power generation, wherein the instruction module is used to pre-input subsequent work instructions within the subsequent time, and execute: predicting the power consumption data of the power equipment module within the subsequent time according to the subsequent work instructions; predicting the power generation data of the energy module within the subsequent time according to the meteorological data; determining the power gap data within the subsequent time according to the power consumption data and the power generation data; predicting the maximum amount of electricity that can be stored by the power storage module before the subsequent time according to the current operation status of the energy module and the power equipment module; if the maximum amount of electricity cannot meet the amount of electricity required by the power gap data, an alarm is issued. If the maximum amount of electricity can meet the amount of electricity required by the power gap data, the power storage module is controlled to supplement the power consumption of the power equipment module within the subsequent time. It can effectively improve the stability and reliability of continuous operation.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy storage, and in particular to a source-grid-load-storage system based on wind power generation and photovoltaic power generation. Background Art

[0002] Source-grid-load-storage is an emerging integrated solution for electricity utilization and storage, which can not only improve the utilization rate of energy, but also effectively alleviate the pressure on the power grid.

[0003] However, the existing source-grid-load-storage system’s self-regulation and control capabilities are still relatively weak, because the power in the system cannot meet the continuous operation of electrical equipment for a long time, resulting in frequent unexpected shutdowns, which calls into question the overall stability of the source-grid-load-storage system.

[0004] In view of this, this application is hereby filed. Summary of the invention

[0005] The purpose of the present invention is to provide a source-grid-load-storage system based on wind power generation and photovoltaic power generation, which can effectively improve the stability and reliability of continuous operation, and can issue early warning when the system may face the risk of insufficient power in the system, so as to facilitate management personnel to make timely adjustments to the power supply plan, avoid unexpected shutdown of electrical equipment, and reduce production risks.

[0006] The embodiment of the present invention is achieved as follows:

[0007] A source-grid-load-storage system based on wind power generation and photovoltaic power generation includes: an energy module, a power storage module, an electric equipment module, an instruction module and an electric energy dispatching module. The energy module includes a wind power generation module and a photovoltaic power generation module. The instruction module is used to pre-input subsequent work instructions of the electric equipment module in the subsequent time.

[0008] The power dispatch module is used to execute the evaluation process, which includes the following steps:

[0009] S1. Predict the power consumption data of the power-consuming equipment module in the subsequent period according to the subsequent work instructions.

[0010] S2. Predict the power generation data of the energy module in the subsequent period based on the meteorological data.

[0011] S3. Determine the power shortage data in the subsequent period based on the power consumption data and power generation data.

[0012] S4. Predict the maximum amount of electricity that the power storage module can store before a subsequent time based on the current operating conditions of the energy module and the power-consuming equipment module.

[0013] S5. If the maximum power cannot meet the power required by the power shortage data, an alarm is issued. If the maximum power can meet the power required by the power shortage data, the power storage module is controlled to supplement the power consumption of the power consumption device module in the subsequent time.

[0014] Furthermore, the electric energy scheduling module is provided with an access key.

[0015] After the subsequent work instructions are pre-entered through the instruction module, the instruction module executes the command issuance process, which includes the following steps:

[0016] D1. Construct a command data packet for each device in the power-consuming device module to store subsequent work instructions for each device.

[0017] D2. Sort all the equipment in the power-consuming equipment module to obtain the equipment sequence.

[0018] D3. Configure a unique identifier for each command data packet to form a command unit, and send the command units to corresponding devices respectively.

[0019] D4. Sort all identifiers in the order of the device sequence to form a string, and use the string to update the access key.

[0020] After receiving the command unit, the power consumption device module executes the response process, which includes the following steps:

[0021] R1. According to the device order in the device sequence, the device at the first position is controlled to extract the identifier in its own command unit and send it to the device at the next position.

[0022] R2. After receiving the identifier, the subsequent device extracts the identifier in its own command unit and sends it together with the received identifier to the subsequent device.

[0023] R3. Repeat R2 until the last device in the device sequence extracts the identifier in its own command unit, and arranges all the identifiers in the order of extraction to obtain the verification key.

[0024] R4. If the verification key matches the access key, all command data packets are sent to the power dispatching module so that the power dispatching module can execute S1.

[0025] When the verification key matches the access key, the electric energy dispatching module allows the electric equipment module to send data to it.

[0026] Furthermore, in D2, when all devices in the power-consuming device module are sorted, they are sorted from small to large according to the signal receiving delay of each device to obtain a device sequence.

[0027] Furthermore, when executing R2 and R3, for the device other than the first one, after receiving the identifier sent by the previous device, if it has not received the corresponding command unit, it will perform null value processing when extracting its own identifier. The power-consuming device module has a preset mapping relationship. When a null value appears, the null value is replaced by a specified unique character as the identifier of the current device.

[0028] Furthermore, if the verification key does not match the access key, the unmatched verification key is returned to the instruction module. The instruction module is used to determine the corresponding device according to the location of the unique character specified in the unmatched verification key, and prompt the administrator with the device.

[0029] The beneficial effects of the technical solution of the embodiment of the present invention include:

[0030] The source-grid-load-storage system based on wind power generation and photovoltaic power generation provided by the embodiment of the present invention can issue an alarm when the maximum power cannot meet the power required by the power gap data, thereby avoiding subsequent unexpected shutdowns and avoiding production losses.

[0031] In general, the source-grid-load-storage system based on wind power generation and photovoltaic power generation provided by the embodiments of the present invention can effectively improve the stability and reliability of continuous operation, and can issue early warning when the system may face the risk of insufficient power in the system, so as to facilitate management personnel to make timely adjustments to the power supply plan, avoid unexpected shutdown of electrical equipment, and reduce production risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A schematic diagram of the relationship between an energy module, a power storage module and a power consumption device module in a source-grid-load-storage system provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram for constructing a command unit;

[0035] Figure 3 A schematic diagram of a string in D4.

[0036] Description of reference numerals:

[0037] Energy module 100; power storage module 200; power consumption equipment module 300. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] It should be understood that the "system", "unit" and / or "module" used in the present invention is a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0042] As shown in this specification and claims, unless the context clearly provides an example, the words "a", "an", "the", etc. do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0043] The flowcharts used in this specification are used to illustrate the operations performed by the system according to the embodiments of this specification. It is understood that the operations of each step are not necessarily performed precisely in order. On the contrary, the steps can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or one or more operations can be removed from these processes.

[0044] In order to solve the deficiencies in the prior art, this embodiment provides a source-grid-load-storage system based on wind power generation and photovoltaic power generation, and the source-grid-load-storage system includes: an energy module 100, a power storage module 200, an electrical equipment module 300, an instruction module (not shown in the figure) and an electric energy scheduling module (not shown in the figure).

[0045] The energy module 100 includes: a wind power generation module and a photovoltaic power generation module, which are used to generate electricity.

[0046] The power storage module 200 is used to store electric energy.

[0047] The power-consuming equipment module 300 includes equipment that requires electricity, including but not limited to: production equipment and automated production lines.

[0048] When the amount of electricity generated by the energy module 100 is greater than the real-time electricity consumption of the power-consuming device module 300, the excess electricity is stored in the power storage module 200. When the amount of electricity generated by the energy module 100 is less than the real-time electricity consumption of the power-consuming device module 300, the electricity stored in the power storage module 200 is used to supplement the electricity consumption of the power-consuming device module 300, thereby ensuring the normal operation of the power-consuming device module 300. The relationship between the energy module 100, the power storage module 200 and the power-consuming device module 300 is as follows: Figure 1 shown.

[0049] The instruction module is used to pre-input the subsequent work instructions of the power-consuming device module 300 in the subsequent time. The subsequent work instructions specifically include the device work instructions and the time when the instructions are executed. When the subsequent work instructions are pre-input through the instruction module, the corresponding device will receive the subsequent work instructions in advance and start executing the corresponding work command according to the specified time.

[0050] The power dispatch module is used to execute the evaluation process, which includes the following steps:

[0051] S1. Predicting the power consumption data of the power-consuming device module 300 in the subsequent period of time according to the subsequent work instructions.

[0052] S2. Predicting the power generation data of the energy module 100 in the subsequent period of time according to the meteorological data.

[0053] S3. Determine the power shortage data in the subsequent period based on the power consumption data and power generation data.

[0054] S4. Predict the maximum amount of electricity that the power storage module 200 can store before a subsequent time based on the current operation of the energy module 100 and the power consumption module 300. Specifically, if the current amount of electricity emitted by the energy module 100 is greater than the real-time power consumption of the power consumption module 300, the power storage module 200 can continue to charge; if the current amount of electricity emitted by the energy module 100 is less than the real-time power consumption of the power consumption module 300, the power storage module 200 will continue to discharge; if the current amount of electricity emitted by the energy module 100 is equal to the real-time power consumption of the power consumption module 300, the amount of electricity in the power storage module 200 will basically not change. Different situations will affect the maximum amount of electricity that the power storage module 200 can store before a subsequent time.

[0055] S5. If the maximum power cannot meet the power required by the power shortage data, an alarm is issued. If the maximum power can meet the power required by the power shortage data, the power storage module 200 is controlled to supplement the power consumption of the power consumption device module 300 in the subsequent time.

[0056] Through this design, an alarm can be issued when the maximum power cannot meet the power required by the power gap data, thereby avoiding subsequent unexpected shutdowns and avoiding production losses.

[0057] In general, the source-grid-load-storage system based on wind power generation and photovoltaic power generation provided in this embodiment can effectively improve the stability and reliability of continuous operation, and can issue early warning when the system may face the risk of insufficient power in the system, so as to facilitate management personnel to make timely adjustments to the power supply plan, avoid unexpected shutdown of electrical equipment, and reduce production risks.

[0058] In this embodiment, the power scheduling module is provided with an access key.

[0059] After the subsequent work instructions are pre-entered through the instruction module, the instruction module executes the command issuance process, which includes the following steps:

[0060] D1. Construct a command data packet for each device in the power-consuming device module 300 to store subsequent working instructions for each device. Figure 2 As shown, a command data packet B1 is constructed for the device C1 in the power-consuming device module 300, and the subsequent work instructions for the device C1 are stored in the command data packet B1; a command data packet B2 is constructed for the device C2 in the power-consuming device module 300, and the subsequent work instructions for the device C2 are stored in the command data packet B2; a command data packet B3 is constructed for the device C3 in the power-consuming device module 300, and the subsequent work instructions for the device C3 are stored in the command data packet B3; a command data packet B4 is constructed for the device C4 in the power-consuming device module 300, and the subsequent work instructions for the device C4 are stored in the command data packet B4; and so on, a command data packet Bn is constructed for the device Cn in the power-consuming device module 300, and the subsequent work instructions for the device Cn are stored in the command data packet Bn. This continues until the command data packets of all the devices in the power-consuming device module 300 are constructed.

[0061] D2. Sort all devices in the power-consuming device module 300 to obtain a device sequence. Exemplarily, the sequence is device C1, device C2, device C3, device C4, ... device Cn, but the sequence is not limited thereto.

[0062] D3. Configure a unique identifier for each command data packet to form a command unit, and send the command units to the corresponding devices. Figure 2 As shown, the identifier of command data packet B1 is A1, the identifier of command data packet B2 is A2, the identifier of command data packet B3 is A3, the identifier of command data packet B4 is A4, ... the identifier of command data packet Bn is An, and identifiers A1, A2, A3, A4, ... and An are unique to each other. Command data packet B1 and identifier A1, command data packet B2 and identifier A2, command data packet B3 and identifier A3, command data packet B4 and identifier A4, ... command data packet Bn and identifier An each constitute a command unit.

[0063] D4. Sort all identifiers in the order of the device sequence to form a string, and use the string to update the access key. According to the order of device C1, device C2, device C3, device C4, ... device Cn in the device sequence, such as Figure 3 As shown, the arrangement order of the identifiers is: identifier A1, identifier A2, identifier A3, identifier A4, ... identifier An. Arranging identifier A1, identifier A2, identifier A3, identifier A4, ... identifier An in succession gives Figure 3 The string shown.

[0064] After the command unit is constructed, the command unit composed of command data packet B1 and identifier A1 is sent to the corresponding device C1, the command unit composed of command data packet B2 and identifier A2 is sent to the corresponding device C2, the command unit composed of command data packet B3 and identifier A3 is sent to the corresponding device C3, the command unit composed of command data packet B4 and identifier A4 is sent to the corresponding device C4,... the command unit composed of command data packet Bn and identifier An is sent to the corresponding device Cn.

[0065] After receiving the command unit, the power-consuming device module 300 executes a response process, which includes the following steps:

[0066] R1. According to the device order in the device sequence, control the first device (i.e., device C1) to extract the identifier (i.e., identifier A1) in its own command unit and send it to the next device (i.e., device C2).

[0067] R2, after the next device (device C2) receives the identifier (identifier A1), it extracts the identifier (i.e., identifier A2) in its own command unit and sends it together with the received identifier (identifier A1) to the next device (i.e., device C3).

[0068] R3. Repeat R2 until the last device in the device sequence (i.e., device Cn) extracts the identifier (i.e., identifier An) in its own command unit, and arranges all the identifiers (identifier A1, identifier A2, identifier A3, identifier A4, ... identifier An) in the order of extraction, that is, arranges as follows: identifier A1-identifier A2-identifier A3-identifier A4-...identifier An, and the verification key is obtained (under normal circumstances, it is the same as Figure 3 is the same string as shown).

[0069] R4. If the verification key matches the access key, all command data packets are sent to the power dispatching module so that the power dispatching module can execute S1.

[0070] Among them, when the verification key matches the access key, the power dispatching module will open the power equipment module 300 to send data to it. If the verification key does not match the access key, it has no right to send data to the power dispatching module.

[0071] Through the above design, dynamic protection of the electric energy dispatching module can be achieved, reducing its unnecessary data interference, improving its operational independence and safety, and thus ensuring the continuous and normal operation of the electric energy dispatching work.

[0072] It should be noted that when executing R2 and R3, for a device other than the first one, after receiving the identifier sent by the previous device, if it itself has not received the corresponding command unit, it will perform null value processing when extracting its own identifier. For null values, the power-consuming device module 300 can preset a mapping relationship in advance. When a null value appears, the null value is replaced by a specified unique character as the identifier of the device, so that it can continue to smoothly execute R2 and R3.

[0073] In particular, when the above-mentioned null value occurs, the corresponding point in the verification key is replaced by the specified unique character, and the verification key and the access key will not match. At this time, the unmatched verification key is returned to the instruction module, which is used to determine the corresponding device based on the location of the "specified unique character" in the unmatched verification key. This device has a problem of data (command unit) receiving delay, so it is necessary to check the relevant equipment and notify the administrator of the device.

[0074] Through this design, the data reception stability of each device can also be checked and monitored at the same time.

[0075] Optionally, in D2, when all devices in the power-consuming device module 300 are sorted, they may be sorted from small to large according to the signal reception delay size of each device (ie, the reception delay size of the command unit) to obtain a device sequence.

[0076] Since it also takes a certain amount of time to extract and transmit the identifier, the devices that are later in the arrangement order have more time to receive the command unit. In comparison, the delay requirements of the devices that are later in the arrangement order are lower than those of the devices that are earlier.

[0077] In this way, flexible arrangements can be made based on the actual delay of the equipment you have, without having to adjust the delay of each device to a very low level, which effectively reduces the difficulty of equipment maintenance and improves compatibility with different devices.

[0078] To sum up, the source-grid-load-storage system based on wind power generation and photovoltaic power generation provided by the embodiment of the present invention can effectively improve the stability and reliability of continuous operation, and can issue early warning when the system may face the risk of insufficient power in the system, so as to facilitate management personnel to make timely adjustments to the power supply plan, avoid unexpected shutdown of electrical equipment, and reduce production risks.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A source-grid-load-storage system based on wind power generation and photovoltaic power generation, characterized in that: include: Energy module, power storage module, power equipment module, instruction module and power dispatch module; the energy module includes a wind power generation module and a photovoltaic power generation module; the instruction module is used to pre-input the subsequent work instructions of the power equipment module in the subsequent time; The electric energy scheduling module is used to execute an evaluation process, which includes the following steps: S1. predicting the power consumption data of the power-consuming device module in the subsequent time according to the subsequent work instruction; S2. predicting the power generation data of the energy module in the subsequent period according to the meteorological data; S3, determining the power shortage data in the subsequent time according to the power consumption data and the power generation data; S4, predicting the maximum amount of electricity that the power storage module can store before the subsequent time according to the current operation status of the energy module and the power consumption device module; S5. If the maximum power cannot meet the power required by the power shortage data, an alarm is issued; if the maximum power can meet the power required by the power shortage data, the power storage module is controlled to supplement the power consumption of the power-consuming device module within the subsequent time; The electric energy scheduling module is provided with an access key; After the subsequent work instruction is pre-input through the instruction module, the instruction module executes the command issuing process, and the command issuing process includes the following steps: D1. Construct a command data packet for each device in the power-consuming device module, respectively, to store the subsequent working instructions of each device; D2. Sort all devices in the power-consuming device module to obtain a device sequence; D3. Assign a unique identifier to each command data packet to form a command unit, and send the command units to corresponding devices respectively; D4. Sort all the identifiers in the order of the device sequence to form a string, and use the string to update the access key; The power-consuming device module executes a response process after receiving the command unit, and the response process includes the following steps: R1. According to the device order in the device sequence, control the first device to extract the identifier in its own command unit and send it to the next device; R2. After receiving the identifier, the next device extracts the identifier in its own command unit and sends it together with the received identifier to the next device; R3, repeat R2 until the last device in the device sequence extracts the identifier in its own command unit, and arranges all the identifiers in the order of extraction to obtain a verification key; R4. If the verification key matches the access key, all the command data packets are sent to the power scheduling module so that the power scheduling module can execute S1; When the verification key matches the access key, the electric energy scheduling module enables the electric equipment module to send data to the module.

2. The source-grid-load-storage system based on wind power generation and photovoltaic power generation according to claim 1 is characterized in that: In D2, when all devices in the power-consuming device module are sorted, they are sorted from small to large according to the signal receiving delay of each device to obtain the device sequence.

3. The source-grid-load-storage system based on wind power generation and photovoltaic power generation according to claim 1 is characterized in that: When executing R2 and R3, for devices other than the first one, after receiving the identifier sent by the previous device, if it itself has not received the corresponding command unit, it will perform null value processing when extracting its own identifier; the electrical equipment module has a preset mapping relationship, and when the null value appears, the null value is replaced by a specified unique character as the identifier of the current device.

4. The source-grid-load-storage system based on wind power generation and photovoltaic power generation according to claim 3 is characterized in that: If the verification key does not match the access key, the unmatched verification key is returned to the instruction module; the instruction module is used to determine the corresponding device according to the position of the specified unique character in the unmatched verification key, and prompt the administrator about the device.

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