Distributed wind-solar power station low-latency network access method, system, device and medium

Abstract

The application discloses a kind of distributed wind and light power station low latency network access method, system, equipment and medium, belong to wind and light power station communication technical field, including: establishing network unified management platform, and the network unified management platform is perceived equipment business demand and network access real-time channel state information;Through network unified management platform, based on all equipment business maximum tolerance delay information and channel real-time state information, preference list is constructed;According to equipment business demand, each unfinished matching equipment is sent to channel matching request, and channel allocation decision when network access is made for all equipment, and is published to each distributed wind and light power station equipment.The method simultaneously considers the differentiated delay demand of different priority services, utilizes network unified management platform and network access algorithm based on demand perception matching, realizes the unified management of wind and light power station network access, simultaneously satisfies the differentiated delay demand of different services, and preferentially guarantees the low delay access demand of high priority service.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of wind and light power station communication, and particularly relates to a distributed wind and light power station low-latency network access method, system, device and medium. BACKGROUND

[0002] With the increasing demand for renewable energy in new power systems, distributed wind and light power stations gradually occupy an increasingly important position in new power systems due to advantages such as energy saving and environmental protection, high safety, low power transmission and distribution loss, and high automation. Distributed wind and light power stations have various services such as collection, inspection, and regulation, and have differentiated latency requirements for transmission and processing of service data, which leads to different processing priorities of different types of services. With the large-scale application of distributed wind power, photovoltaic and other devices in the power grid, the number of concurrent services of the communication network rapidly increases, and the device access pressure gradually increases. The complex network environment makes it difficult for devices to make appropriate network access decisions, and it is difficult to ensure that better quality and higher gain channels are allocated to devices with higher service priorities to achieve low-latency network access of devices, and it is difficult to meet the differentiated latency requirements of different services.

[0003] Therefore, it is urgent to design a distributed wind and light power station low-latency network access technology to optimize the network access decision of the device through reasonable allocation of channel resources, meet the differentiated latency requirements, and especially guarantee the low-latency requirements of high-priority services. However, the research on the network access technology of the distributed wind and light power station still faces the following technical challenges:

[0004] 1) The current network access technology of the distributed wind and light power station lacks unified coordination and management of channels, cannot perceive the device service category, environmental information and channel state information, and is difficult to solve the conflict problem of allocated channels when the device accesses the network, resulting in poor service processing capacity and high network access latency in the large number of concurrent service scenarios.

[0005] 2) The current network access technology of the distributed wind and light power station lacks perception of service requirements, and cannot allocate appropriate channels according to the differentiated latency requirements of services, resulting in difficulty in allocating channels according to different service priorities to meet the differentiated latency requirements of services, and difficulty in guaranteeing the low-latency access requirements of high-priority services. SUMMARY

[0006] The purpose of the present application is to provide a distributed wind and light power station low-latency network access method, system, device and medium, which simultaneously considers the differentiated latency requirements of different priority services, uses a network unified management platform and a network access algorithm based on requirement perception matching, realizes unified management of wind and light power station network access, simultaneously meets the differentiated latency requirements of different services, and preferentially guarantees the low-latency access requirements of high-priority services.

[0007] To achieve the above object, the present application adopts the following technical solutions to achieve:

[0008] A low-latency network access method for a distributed wind and light power station, comprising:

[0009] A network unified management platform is established, and the device business demand and network access real-time channel state information are perceived through the network unified management platform;

[0010] A preference list is constructed based on the maximum tolerable latency information of all device businesses and the real-time state information of the channel through the network unified management platform;

[0011] A matching request is sent to the channel according to the device business demand for each unfinished matching device, a channel allocation decision is made for all devices when accessing the network, and the decision is published to each distributed wind and light power station device.

[0012] As a further improvement of the present application, the network unified management platform comprises an interface layer, a protocol conversion layer, a resource layer and a control layer; the interface layer comprises communication ports with different distributed wind and light power station components, including humidity sensors, temperature sensors and angle sensors; the protocol conversion layer is used to convert different communication protocols of devices into protocols compatible with the platform; the resource layer comprises communication, calculation and storage resources of the network unified management platform; and the control layer is used to optimize the channel selection strategy of the device by comprehensively considering the business demand and channel state information.

[0013] As a further improvement of the present application, the control layer is used to optimize the channel selection strategy of the device by comprehensively considering the business demand and channel state information, comprising:

[0014] The low-latency network access scenario of the distributed wind and light power station based on demand perception matching contains M channels, represented as C={c1,...,c m ,..,c M}; contains N devices, represented as D={d1,...,d n ,..,d N}; each device business request is modeled as where d n and TN represent the nth device and the target node respectively, U n is the size of the data packet transmitted by the nth device, represents the maximum tolerable latency of the nth device business access; when matching, all devices are allocated channels according to their priority requirements, and the devices transmit data according to the channel resource allocation decision; the rate R n of the device d m transmitting data through the channel c n,m is

[0015]

[0016] wherein x n,m is a binary channel selection variable, when device U n is assigned channel c m to access the network to transmit data, x n,m = 1, otherwise, x n,m = 0, B m and h m represent the bandwidth and gain of channel c m , respectively, p n represents the transmission power of the nth device, σ EMI and σ0 represent the electromagnetic interference and noise power to which the channel is subjected, respectively; the delay of device d n when transmitting data through channel c m is represented as

[0017]

[0018] minimizing the transmission delay by channel allocation satisfying the channel allocation constraints and

[0019]

[0020] As a further improvement of the present application, the network unified management platform constructs a preference list based on the maximum tolerable delay information of all device services and real-time state information of the channels, comprising:

[0021] The network unified management platform traverses all selectable channels for each device, calculates the preference value of each device for the selectable channels according to the channel state information and the maximum tolerable delay of the device service, and sorts the preference values in descending order to obtain the preference list.

[0022] As a further improvement of the present application, the calculation of the preference value of each device for the selectable channels comprises:

[0023] The construction of the preference value realizes service priority awareness, and the preference value r n,m of device d n for channel c m is represented as

[0024]

[0025] wherein p m,n is the cost of device d n accessing channel c m , τ n,m is the transmission delay of device d n when transmitting data through channel c m , The maximum tolerable delay of the nth device service access.

[0026] As a further improvement of the present application, the matching request sent by each unfinished matching device to the channel according to the device service requirement comprises:

[0027] The matching request sent by each unfinished matching device to the channel, when the network unified management platform identifies that the channel c m Upon receiving multiple matching requests, the matching cost of the channel c m is increased, denoted as

[0028] p m,n = p m,n + Δp

[0029]

[0030] wherein p m,n is the cost of the device d n accessing the channel c m , The maximum tolerable delay of the nth device service access, and Δp is the increased matching cost when the channel receives multiple requests.

[0031] As a further improvement of the present application, the channel allocation decision for network access of all devices comprises:

[0032] The network unified management platform sends an access request to the channel for the device;

[0033] It is determined whether multiple devices are allocated the same channel;

[0034] If yes, the maximum tolerable delay is used to update the matching cost of the channel for the device, and after the channel updates the matching cost, the preference list of the device is reconstructed and the request is sent again, and the steps of the network unified management platform based on the maximum tolerable delay information of all device services and the real-time state information of the channel are repeated until all devices complete matching;

[0035] If no, the access request of the device is received; and the network access of the wind-solar power station device is completed.

[0036] A distributed wind-solar power station low-latency network access system, characterized in that it comprises:

[0037] A sensing information module for establishing a network unified management platform, and sensing device service requirements and network access real-time channel state information through the network unified management platform;

[0038] A list construction module for constructing a preference list through the network unified management platform based on the maximum tolerable delay information of all device services and the real-time state information of the channel.

[0039] A distribution decision module is configured to send a matching request to a channel for each uncompleted matching device according to the device service requirement, and make a channel distribution decision for network access of all devices and issue the decision to each distributed wind-solar power station device.

[0040] An electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the distributed wind-solar power station low-latency network access method when executing the computer program.

[0041] A computer readable storage medium stores a computer program, and the computer program implements the steps of the distributed wind-solar power station low-latency network access method when executed by a processor.

[0042] An electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the distributed wind-solar power station low-latency network access method when executing the computer program.

[0043] A computer readable storage medium stores a computer program, and the computer program implements the steps of the distributed wind-solar power station low-latency network access method when executed by a processor.

[0044] Compared with the prior art, the present application has the following beneficial effects:

[0045] The present application provides a demand-aware low-latency network access method for the differentiated requirements of distributed wind-solar power station service device network access. The present application establishes a network unified management platform, senses device service requirements and network access real-time channel state information through the network unified management platform, and formulates a channel distribution decision for network access of all devices based on maximum tolerable latency information of all device services and real-time channel state information through the network unified management platform. This avoids network access conflicts caused by device selection of channels, improves processing capacity in a large number of service concurrent scenarios, and reduces network access latency. The network unified management platform and the network access algorithm based on demand-aware matching are used to realize unified management of wind-solar power station network access, meet differentiated latency requirements of different services, and preferentially guarantee low-latency access requirements of high-priority services.

[0046] Further, the application proposes a demand-aware matching network access method, which introduces a maximum tolerable delay value of a device in the matching theory preference list setting and matching cost updating, constructs a preference list for the device according to its different service priority low-delay network access demand, improves the delay demand awareness of the network unified management platform for the device, more effectively solves the channel allocation problem, and realizes low-delay network access of high-priority services, while meeting the differentiated access delay demand of different service priorities. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 A distributed wind-solar power station low-delay network access flowchart is provided in the application.

[0048] Figure 2 A distributed wind-solar power station low-delay network access scene diagram based on demand-aware matching is provided.

[0049] Figure 3 A network access algorithm flowchart based on demand-aware matching is provided.

[0050] Figure 4 A distributed wind-solar power station low-delay network access system is provided in the application.

[0051] Figure 5 An electronic device schematic diagram is provided in the application. DETAILED DESCRIPTION

[0052] In order for those skilled in the art to better understand the application scheme, the technical solutions in the embodiments of the application will be described clearly and completely below in combination with the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the application.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0054] The application provides a distributed wind-solar power station low-latency network access technology, simultaneously considering differentiated latency requirements of different priority services, utilizing a network unified management platform and a network access algorithm based on requirement perception matching, realizing unified management of wind-solar power station network access, simultaneously meeting differentiated latency requirements of different services, and preferentially guaranteeing low-latency access requirements of high-priority services.

[0055] As shown in the figure, Figure 1 The application provides a distributed wind-solar power station low-latency network access method, comprising:

[0056] A network unified management platform is established, and device service requirements and network access real-time channel state information are perceived through the network unified management platform;

[0057] A preference list is constructed based on maximum tolerance latency information of all device services and real-time state information of channels through the network unified management platform;

[0058] A matching request is sent to a channel for each unfinished matching device according to device service requirements, a channel allocation decision during network access is made for all devices, and the channel allocation decision is published to each distributed wind-solar power station device.

[0059] The application establishes a network unified management platform, perceives device service requirements and network access real-time channel state information through the network unified management platform, and makes a channel allocation decision during network access for all devices based on maximum tolerance latency information of all device services and real-time state information of channels through the network unified management platform, thereby avoiding network access conflicts caused by device selection of channels, improving processing capacity in a large number of service concurrent scenarios, and reducing network access latency.

[0060] The network access algorithm based on requirement perception matching of the application sets a maximum latency value that can be tolerated by a device in a preference list of a matching theory, so that a high-priority requirement service device has a greater preference value for a channel with better performance, thereby improving the access possibility of the priority device. Meanwhile, when a matching cost is increased, a matching cost increase function is designed, so that the matching cost increase amplitude of a channel for a high-priority service is small, which is beneficial to the access of the channel by the high-priority service in channel allocation competition. The low-latency network access of the high-priority service is realized, and differentiated access latency requirements of different service priorities are met.

[0061] The specific method is described in detail below in combination with the drawings and embodiments.

[0062] The distributed wind-solar power station low-latency network access scenario based on requirement perception matching proposed by the application is shown in the figure. Figure 2 The technical scheme provided by the application comprises

[0063] S1: A network unified management platform is established.

[0064] In a further embodiment, S1 includes:

[0065] The unified network management platform comprises an interface layer, a protocol conversion layer, a resource layer, and a control layer. The interface layer includes communication ports for various distributed wind and solar power plant components, such as humidity sensors, temperature sensors, and angle sensors. The protocol conversion layer is responsible for converting different communication protocols of the devices into platform-compatible protocols, enabling devices using different high-level protocols on the communication network to still cooperate and complete various distributed applications. The resource layer includes the communication, computing, and storage resources of the unified network management platform. The control layer optimizes the channel selection strategy of the devices by integrating service requirements and channel state information.

[0066] Through a unified network management platform deployed in distributed wind and solar power plants, devices using various access methods can connect to the platform via the interface layer and protocol conversion layer. When services need to be transmitted, the control layer of the unified network management platform formulates appropriate channel allocation strategies based on factors such as device status, service type, and network resource status, and publishes these strategies to each distributed wind and solar power plant device. The devices dynamically establish connections between terminals and forward data packets according to the received channel allocation strategies. The unified network management platform can sense changes in device status, service requirements, and network environment status, and re-formulate channel allocation strategies based on new service requirements and network status information, achieving adaptive network adjustments to meet the differentiated latency requirements of services.

[0067] S2: Based on the above platform, establish a channel resource allocation model that is aware of different service latency requirements.

[0068] In a further embodiment, S2 includes:

[0069] Assume a demand-aware matching-based distributed wind and solar power plant low-latency network access scenario includes M channels, represented as C = {c1,...,c...} m ,..,c M}; Contains N devices, the set is represented as D = {d1,...,d2} n ,..,d N Each device service request can be modeled as follows: Where d n TN and U represent the nth device and the target node, respectively. n The size of the data packet transmitted by the nth device. This represents the maximum tolerable latency for the nth device to access the service. During matching, the unified network management platform allocates channels to all devices based on their priority requirements, and the devices transmit data according to the channel resource allocation decision. Device d n via channel c mRate R when transmitting data n,m For

[0070]

[0071] where x n,m is a binary channel selection variable, when device U n is assigned channel c m , x n,m = 1, otherwise, x n,m = 0, B m and h m denote the bandwidth and gain of channel c m , respectively, p n denotes the transmission power of the nth device, and σ EMI and σ0 denote the electromagnetic interference and noise power to which the channel is subjected, respectively. Thus, the delay when device d n transmits data through channel c m is expressed as

[0072]

[0073] The present application solves the low-delay network access problem of devices with different service priorities in the distributed wind-solar power station scenario, and studies how to minimize the transmission delay through channel allocation and the optimization problem satisfies the channel allocation constraints and that is, each device can only select one channel, and each channel can be allocated to at most one device.

[0074] To solve the above optimization problem, the present application proposes a network access algorithm based on demand perception

[0075] S3: Based on the above model, a network access algorithm based on delay demand perception matching is proposed.

[0076] In further embodiments, S3 comprises:

[0077] The network access algorithm based on demand perception matching proposed by the present application includes two parts of preference list construction and matching, and the algorithm flow chart is as shown in Figure 3 , which is specifically introduced as follows.

[0078] S3.1 Preference list construction based on demand perception

[0079] The present application realizes service priority perception through the construction of preference value. The preference value r n,m of device d n for channel c m is expressed as

[0080]

[0081] where p m,n is the cost of device d n accessing channel c m . The formula indicates that the smaller the maximum tolerable delay value of device d n , i.e. the higher the priority requirement of device d n , the greater the preference value of device d m for channel c n , and the more likely the device is to choose a channel with higher performance for network access to transmit data. By introducing the maximum tolerable delay of the device into the preference value, different devices with different priority requirements have different preference values for the channel, so that devices with higher priority are more likely to choose a high-quality channel for low-delay network access. Further, by arranging the preference values of device d n for different channels in descending order, a preference list of device d n is formed.

[0082] S3.2 Network access algorithm based on demand-aware matching

[0083] The network access algorithm based on demand-aware matching is described as follows.

[0084] Step 1: Initialization. The matching cost p m,n of all channels is initialized to 0.

[0085] Step 2: Update of the preference list. The network unified management platform traverses all available channels for each device, and calculates the preference value of each device for the available channels according to the channel state information and the maximum tolerable delay of the device service, and sorts the preference values in descending order to obtain the preference list.

[0086] Step 3: Demand-aware matching. Each device that has not completed matching sends a matching request to the channel. When the network unified management platform identifies that channel c m receives multiple matching requests, the matching cost of channel c m is increased, which is represented as

[0087] p m,n = p m,n + Δp (4)

[0088]

[0089] where Δp is the matching cost increased when the channel receives multiple requests. Formula (5) means that when multiple devices with different priority services select the same channel, the higher the priority requirement of device d n , i.e. the smaller the maximum tolerable delay value of device d n , the greater the matching cost of channel c m for device dn The matching cost of the high-priority service device d n is less likely to be accessed in the channel allocation competition. After updating the matching cost of the channel, the network unified management platform reconstructs the preference list for the devices according to the formulas (3), (4) and (5) and sends the request again, that is, repeats steps 2 and 3 until all the devices complete the matching.

[0090] As shown in Figure 4 , the application further provides a distributed wind and light power station low-latency network access system, characterized by comprising:

[0091] a perception information module, which is configured to establish a network unified management platform and perceive device service demand and network access real-time channel state information through the network unified management platform;

[0092] a list construction module, which is configured to construct a preference list based on all device service maximum tolerance delay information and channel real-time state information through the network unified management platform;

[0093] an allocation decision module, which is configured to send a matching request to the channel for each device that has not completed the matching according to device service demand, make a channel allocation decision for network access for all the devices, and publish the decision to each distributed wind and light power station device.

[0094] As shown in Figure 5 , the application provides an electronic device, which comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the distributed wind and light power station low-latency network access method when executing the computer program.

[0095] The distributed wind and light power station low-latency network access method comprises the following steps:

[0096] establishing a network unified management platform and perceiving device service demand and network access real-time channel state information through the network unified management platform;

[0097] constructing a preference list based on all device service maximum tolerance delay information and channel real-time state information through the network unified management platform;

[0098] sending a matching request to the channel for each device that has not completed the matching according to device service demand, making a channel allocation decision for network access for all the devices, and publishing the decision to each distributed wind and light power station device.

[0099] The application further provides a computer readable storage medium, which stores a computer program, and the computer program implements the steps of the distributed wind and light power station low-latency network access method when executed by a processor.

[0100] The distributed wind and light power station low-latency network access method comprises the following steps:

[0101] A network unified management platform is established, and the network unified management platform is used to perceive device service requirements and network access real-time channel state information;

[0102] A preference list is constructed based on all device service maximum tolerance delay information and channel real-time state information through the network unified management platform;

[0103] A matching request is sent to the channel according to the device service requirements for each uncompleted matching device, a channel allocation decision is made for network access of all devices, and the decision is published to each distributed wind and light power station device.

[0104] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can adopt a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt a computer program product in the form of being implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program codes.

[0105] The present application is described with reference to flowcharts and / or block diagrams of the method, device (system), and computer program product according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to produce a machine, so that the instructions executed by the computer or other programmable data processing devices produce a device implemented in the flowcharts and / or block diagrams. Figure 1 The function specified in one flow or multiple flows and / or blocks. Figure 1 The function specified in one block or multiple blocks.

[0106] These computer program instructions can also be stored in a computer readable memory capable of guiding the computer or other programmable data processing devices to work in a specific manner, so that the instructions stored in the computer readable memory produce a product including instruction devices, which implement the functions specified in the flowcharts and / or block diagrams. Figure 1 The function specified in one flow or multiple flows and / or blocks. Figure 1 The function specified in one block or multiple blocks.

[0107] These computer program instructions can also be loaded into a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 Figure 1

[0108] Finally, it should be noted that the above examples are merely intended to describe the technical solutions of the present application, rather than limiting the same. Although the present application has been described in detail with reference to the above examples, those skilled in the art should understand that the specific embodiments of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and any modification or equivalent replacement without departing from the spirit and scope of the present application should be covered within the protection scope of the claims of the present application.​​

Claims

1. A low-latency network access method for a distributed wind-solar power station, characterized in that, The method comprises the following steps: establishing a network unified management platform, perceiving device business demand and network access real-time channel state information through the network unified management platform; constructing a preference list based on all device business maximum tolerance delay information and channel real-time state information through the network unified management platform; issuing a matching request to a channel for each unfinished matching device according to device business demand, formulating a channel allocation decision for network access for all devices, and publishing to each distributed wind and light power station device; the step of constructing a preference list based on all device business maximum tolerance delay information and channel real-time state information through the network unified management platform comprises the following steps: traversing all selectable channels for each device based on the network unified management platform, calculating a preference value of each device corresponding to a selectable channel according to channel state information and device business maximum tolerance delay, and obtaining a preference list by descending order sorting of the preference value; the step of calculating a preference value of each device corresponding to a selectable channel comprises the following steps: Business priority awareness is achieved through the construction of preference values, devices to a channel the preference values are expressed as wherein is the device access channel cost, is the device transmission delay when transmitting data through the channel, denotes the maximum tolerable delay for the device service access. ​ 2. The low-latency network access method for a distributed wind-solar power station according to claim 1, characterized in that, the network unified management platform comprises an interface layer, a protocol conversion layer, a resource layer and a control layer; the interface layer comprises communication ports of different distributed wind and light power station components, the components comprising a humidity sensor, a temperature sensor and an angle sensor; the protocol conversion layer is used for converting different communication protocols of devices into protocols compatible with the platform; the resource layer comprises communication, calculation and storage resources of the network unified management platform; the control layer is used for optimizing a channel selection strategy of a device by comprehensively considering business demand and channel state information.

3. The low-latency network access method for a distributed wind-solar power station according to claim 2, characterized in that, the step of optimizing a channel selection strategy of a device by comprehensively considering business demand and channel state information comprises the following steps: A distributed wind-solar power station low-latency network access scenario based on demand-aware matching contains channels, denoted as ; contains devices, denoted as ; each device service request is modeled as , where and represent the device and target node, is the data packet size of the device, represents the tolerable maximum latency of the device service access; in matching, all devices are allocated channels according to their priority requirements, and devices transmit data according to channel resource allocation decisions; the rate of the device transmitting data through the channel is where is a variable chosen for the binary channel when the device is assigned a channel to transmit data over the access network, otherwise, , and denote the bandwidth and gain of the channel , denotes the transmission power of the device, and denote the electromagnetic interference and noise power experienced by the channel; the delay of the device when transmitting data over the channel is denoted by Minimizing transmission latency through channel allocation , satisfying channel allocation constraints and .

4. The low-latency network access method for a distributed wind-solar power station according to claim 1, characterized in that, the step of issuing a matching request to a channel for each unfinished matching device according to device business demand comprises the following steps: Each unfulfilled matching device sends a matching request to the channel, when the network unified management platform identifies the channel Upon receiving multiple matching requests, the channel Increases the matching cost, denoted as the last Access channel The cost Plus the matching cost increased when the channel receives multiple requests ; wherein, wherein, represents the maximum tolerable latency for the device service access.

5. The low-latency network access method for a distributed wind-solar power station according to claim 1, wherein, the step of formulating a channel allocation decision for network access for all devices comprises the following steps: the network unified management platform issues an access request to a channel for a device; it is judged whether multiple devices are allocated a same channel; If yes, the maximum tolerable delay is utilized The channel update matching cost is updated to match the cost of the device, the channel update matching cost is updated, the preference list of the device is reconstructed, and the request is sent again. The step of repeating the network unified management platform based on all device service maximum tolerable delay information and channel real-time state information is repeated until all devices are matched. if not, an access request of a receiving device is received; network access of a wind and light power station device is completed.

6. A low-latency network access system for a distributed wind-solar power station, which implements the low-latency network access method for the distributed wind-solar power station according to any one of claims 1-5, characterized in that, The method comprises the following steps: a perception information module is used for establishing a network unified management platform, perceiving device business demand and network access real-time channel state information through the network unified management platform; a list construction module is used for constructing a preference list based on all device business maximum tolerance delay information and channel real-time state information through the network unified management platform; a distribution decision module is used for issuing a matching request to a channel for each unfinished matching device according to device business demand, formulating a channel allocation decision for network access for all devices, and publishing to each distributed wind and light power station device.

7. An electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the low-latency network access method for a distributed wind and light power station according to any one of claims 1-5 when executing the computer program.

8. A computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program implements the steps of the low-latency network access method for a distributed wind and light power station according to any one of claims 1-5 when executed by a processor.

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