A dual-mode hybrid data transmission control method and device for distribution network station area

Abstract

The present invention provides a dual-mode hybrid data transmission control method and device for a distribution network substation, the method steps include: S01. Acquire the communication parameter information of each link between terminals in the distribution network substation, each link between terminals in the substation adopts a power line carrier and micro-power wireless dual-mode communication mode; S02. Calculate the communication service quality factor of each link between terminals in the distribution network substation according to the acquired communication parameter information of each link; S03. Select all available links for data transmission used in the current cycle according to the communication service quality factor of each link; S04. Select the optimal communication path from the selected available links for data transmission; S05. Control the terminals in the distribution network substation to perform data transmission according to the optimal communication path. The present invention can realize the dual-mode hybrid data transmission control of the distribution network substation and improve the reliability of data transmission in the distribution network substation.

Description

Technical Field

[0001] The present invention relates to data communication in a distribution network area, and in particular to a dual-mode hybrid data transmission control method and device for a distribution network area. Background Art

[0002] The power distribution network area realizes metering services through power terminals, mainly including collection and control services. The above services have high requirements for communication service quality, such as strict requirements for communication indicators such as delay and packet loss rate. The local communication technology of the power access communication network mainly includes power line carrier and micro-power wireless communication. In the existing technology, local communication is widely used in power line carrier and micro-power wireless communication. Two single-mode communication methods are used to realize metering service data transmission, that is, either power line carrier communication or micro-power wireless communication. However, both power line carrier and micro-power wireless methods have their own defects: power line carrier signal attenuation is large, greatly affected by power line load and grid structure, and the transmission distance is short, while micro-power wireless signals are easily affected by obstacles and have large signal attenuation. Single-mode communication methods are difficult to fully meet the communication quality requirements of metering services in different scenarios, and there are great limitations in supporting the application of station area services, especially the communication reliability is difficult to meet the requirements of real-time transmission and interaction of distribution station area data.

[0003] To solve the above problems, some practitioners have proposed to use power line carrier and micro-power wireless communication dual-mode in the distribution network area. However, this type of method usually directly configures the entire area's network as dual-mode, that is, all communication links in the area use power line carrier and micro-power wireless communication at the same time. In the actual communication process, using power line carrier and micro-power wireless communication dual-mode for all links will result in high overall implementation costs and high costs. For scenarios where dual-mode is not necessary, there will be problems such as waste of resources and low utilization. In addition, the communication status and transmission reliability of different data links are different. The signal-to-noise ratio and packet loss rate of some communication links may be low, and the transmission reliability is poor. Direct data transmission through all communication links still cannot ensure the reliability of data transmission. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in response to the technical problems existing in the prior art, the present invention provides a distribution network substation dual-mode hybrid data transmission control method and device with simple implementation method, high control efficiency and reliability, and strong flexibility.

[0005] In order to solve the above technical problems, the technical solution proposed by the present invention is:

[0006] A dual-mode hybrid data transmission control method for a distribution network area, the steps comprising:

[0007] S01 obtains the communication parameter information of each link between the terminals in the distribution network area, and each link between the terminals in the area is configured with a power line carrier and a micro-power wireless dual mode;

[0008] S02. Calculate the communication service quality factor of each link between the distribution network terminals according to the communication parameter information obtained for each link;

[0009] S03. According to the communication service quality factor of each link, select all available links for data transmission used in the current cycle;

[0010] S04. Selecting the optimal communication path from the selected available links for data transmission;

[0011] S05. Control the terminals in the distribution network area to transmit data according to the optimal communication path.

[0012] Furthermore, the communication parameter information includes communication parameters of a power line carrier link and communication parameters of a micro-power wireless link. The communication parameters of the power line carrier link include a signal-to-noise ratio and / or a packet loss rate, and the communication parameters of the micro-power wireless link include any one or more of a transmission power, a packet loss rate, and a delay.

[0013] Further, the communication parameter information includes the communication parameters of the power line carrier link and the communication parameters of the micro-power wireless link. In step S02, specifically according to the formula Calculate the transmission reliability factor p of the power line carrier link i,j , according to the formula Calculate the transmission reliability factor q of micropower wireless links i,j According to the formula Calculate the transmission reliability factor r of the hybrid redundant link i,j , the hybrid redundant link is to use the power line carrier link and the micro-power wireless link at the same time, wherein is the normalized signal-to-noise ratio of the power line carrier link, is the normalized packet loss rate of the power line carrier link, γ is the preset coefficient value, i and i are the start and end nodes of the link respectively, Normalized transmit power for micro-power wireless links, Normalized packet loss rate for micro-power wireless links.

[0014] Furthermore, in the step S03, the available links for data transmission are selected based on the principle of selecting power line carrier communication, micro-power wireless link, and dual-mode link in order of priority to obtain an available link set uselinkSet.

[0015] Furthermore, in step S03, the available link for data transmission used in the current cycle is selected according to the following formula:

[0016]

[0017] Among them, Com(R i,j ) represents R i,j The transmission mode used by the link, i and i are the start and end nodes of the link respectively, PLC is the power line carrier link, PLC is the micro-power wireless link, DualMode represents a hybrid redundant link, that is, the power line carrier link and the micro-power wireless link are used at the same time, α represents the communication reliability threshold of the power line carrier link, and β represents the reliability threshold of the wireless micro-power link.

[0018] Furthermore, in step S03, the optimal communication path is selected according to the maximum average routing link reliability criterion, and in the available link set uselinkSet, the average routing link reliability C is maximized as the optimization goal, and the selected path meets the preset delay upper limit threshold H t and the upper threshold of packet loss rate H l Under these conditions, the shortest path method is used to search for the best data transmission path P with source node S and target node D. opt , that is, the optimal communication path is obtained.

[0019] Furthermore, according to the formula Calculate the average routing link reliability function C, where P is the selected link set, k is the number of power line carrier links, n is the number of micro-power wireless links, m is the number of hybrid links, W i,j is the link reliability of the path, i and i are the starting and ending nodes of the link respectively, and the calculation formula is:

[0020]

[0021] Among them, Com(R i,j ) represents R i,j The transmission mode used by the link, PLC is a power line carrier link, PLC is a micro-power wireless link, DualMode means a hybrid redundant link, p i,j represents the transmission reliability factor of the power line carrier link, q i,j represents the transmission reliability factor of the micro-power wireless link, r i,j Represents the transmission reliability factor of the hybrid redundant link.

[0022] A dual-mode hybrid data transmission control device for a distribution network area, comprising:

[0023] The communication parameter acquisition module is used to obtain the communication parameter information of each link between the terminals in the distribution network area. Each link between the terminals in the area is configured with a power line carrier and a micro-power wireless dual mode;

[0024] A quality factor calculation module, used to calculate the communication service quality factor of each link between the terminals in the distribution network area according to the communication parameter information of each link obtained;

[0025] An available path selection module, used to select all available links for data transmission used in the current cycle according to the communication service quality factor of each link;

[0026] An optimal path determination module selects an optimal communication path from the selected available links for data transmission;

[0027] The data transmission control module is used to control the data transmission between terminals in the distribution network area according to the optimal communication path.

[0028] A computer device comprises a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to execute the computer program to perform the above method.

[0029] A computer-readable storage medium storing a computer program, wherein the computer program implements the above method when executed.

[0030] Compared with the prior art, the advantages of the present invention are:

[0031] 1. The present invention obtains the communication parameter information of the link between the dual-mode terminals in the distribution network substation, calculates the communication service quality factor of the link between the dual-mode terminals in the distribution network substation to evaluate the reliability of the link, and then selects the available link for data transmission of metering services in the distribution network substation according to the communication service quality factor, and finally selects the optimal communication path from each available data transmission link to perform power metering service data transmission according to the optimal communication path, which can effectively make up for the disadvantages of power line carrier and micro-power wireless communication, improve the communication quality of data transmission in the distribution network substation, and ensure the reliability of data transmission.

[0032] 2. The present invention further selects the available links for data transmission of metering services in the distribution network substation according to the principle of communication reliability, and selects the optimal link in combination with the maximum reliability criterion of the average routing link. It can quickly screen out links with high communication reliability while ensuring the maximum reliability of the average routing link, which can greatly improve the communication reliability and quality of data transmission in the substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the implementation flow of the dual-mode hybrid data transmission control method of the distribution network substation in this embodiment.

[0034] Figure 2 It is a schematic diagram of a communication link in an application scenario applicable to a specific application embodiment of the present invention.

[0035] Figure 3 It is a schematic diagram of the available link selection result obtained in a specific application embodiment of the present invention.

[0036] Figure 4 It is a schematic diagram of the result of searching for the optimal communication path in a specific application embodiment of the present invention. DETAILED DESCRIPTION

[0037] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0038] like Figure 1 As shown, the steps of the dual-mode hybrid data transmission control method for the distribution network area in this embodiment include:

[0039] S01. Obtain communication parameter information of each link between terminals in the distribution network area. Each link between terminals in the area adopts a power line carrier and micro-power wireless dual-mode communication mode;

[0040] S02. Calculate the communication service quality factor of each link between the distribution network terminals based on the acquired communication parameter information of each link;

[0041] S03. According to the communication service quality factor of each link, select all available links for data transmission used in the current cycle;

[0042] S04. Select the optimal communication path from the available links for data transmission;

[0043] S05. Control the data transmission between terminals in the distribution network substation according to the optimal communication path.

[0044] This embodiment obtains the communication parameter information of the link between the dual-mode terminals in the distribution network substation, calculates the communication service quality factor of the link between the dual-mode terminals in the distribution network substation to evaluate the reliability of the link, and then selects the available link for data transmission of metering services in the distribution network substation according to the communication service quality factor. Finally, the optimal communication path is selected from each available data transmission link to perform power metering service data transmission according to the optimal communication path. This can effectively make up for the disadvantages of power line carrier and micro-power wireless communication, improve the communication quality of data transmission in the distribution network substation, and ensure the reliability of data transmission.

[0045] In this embodiment, the communication parameter information specifically includes the communication parameters of the power line carrier link and the communication parameters of the micro-power wireless link. The communication parameters of the power line carrier link include signal-to-noise ratio, packet loss rate, etc., and the communication parameters of the micro-power wireless link include transmission power, packet loss rate, delay, etc., so as to comprehensively consider multiple evaluation factors to evaluate the communication quality of the link.

[0046] In step S02 of this embodiment, the transmission reliability factor of the link is calculated according to the following formula:

[0047]

[0048]

[0049]

[0050] Among them, p i,j To calculate the transmission reliability factor of the power line carrier link, q i,j is the transmission reliability factor of the micro-power wireless link, r i,j is the transmission reliability factor of the hybrid redundant link. The hybrid redundant link uses both the power line carrier link and the micro-power wireless link. is the normalized signal-to-noise ratio of the power line carrier link, is the normalized packet loss rate of the power line carrier link, γ is the preset coefficient value, i and i are the start and end nodes of the link respectively, Normalized transmit power for micro-power wireless links, Normalized packet loss rate for micro-power wireless links.

[0051] Assume that the total number of nodes in the dual-mode communication network is N, and the dual-mode communication link between the dual-mode terminal communication node i and the node j includes a power line carrier link and a micro-power wireless link. Assume that the current period is T k , where k is the cycle number, T k The value range of can be 10 minutes to 20 minutes; in the current cycle T k For each dual-mode communication link R consisting of node i and node j, i,j (1≤i,j≤N,i≠j), the transmission reliability factor of each link is calculated according to the following steps:

[0052] Statistics acquisition R i,j Mean signal-to-noise ratio of power line carrier links and the mean packet loss rate And statistically obtain the average transmission power of the micro-power wireless link Mean packet loss rate Mean delay Assuming the signal-to-noise ratio threshold of the power line carrier link of the dual-mode communication network Packet loss rate threshold And the transmit power threshold of micro-power wireless links Packet loss rate threshold

[0053] According to the formula Calculate the normalized signal-to-noise ratio of the power line carrier link According to the formula Calculate the normalized packet loss rate of the power line carrier link According to the formula Calculate the normalized transmit power of the micro-power wireless link According to the formula Calculate the normalized packet loss rate of the micro-power wireless link

[0054] For each pair of adjacent nodes i and j, the communication link R i,j , according to the formula Calculate the transmission reliability factor p of the power line carrier link i,j , according to the formula Calculate the transmission reliability factor q of micropower wireless links i,j , and according to the formula Calculate the transmission reliability factor r of the hybrid redundant link i,j , that is, the transmission reliability factors corresponding to the power line carrier link, micro-power wireless link and hybrid redundant link can be obtained.

[0055] In this embodiment, in step S03, the principle of selecting power line carrier communication, micro-power wireless link, and dual-mode link (hybrid redundant link) in order of priority is specifically used to select the available link for data transmission, and obtain the available link set uselinkSet. That is, according to the principle of first selecting power line carrier communication, second selecting micro-power wireless link, and finally selecting dual-mode link, the available link set uselinkSet is selected.

[0056] In this embodiment, the available link for data transmission used in the current cycle may be selected according to the following formula:

[0057]

[0058] Among them, Com(R i,j ) represents R i,j The transmission mode used by the link, i and i are the starting and ending nodes of the link respectively, R i,j is the current cycle T kThe communication link is composed of node i and node j, PLC is a power line carrier link, PLC is a micro-power wireless link, DualMode represents a hybrid redundant link, that is, the power line carrier link and the micro-power wireless link are used at the same time, α represents the communication reliability threshold of the power line carrier link, and β represents the reliability threshold of the wireless micro-power link. The communication reliability threshold α of the power line carrier link is in the range of 0.5 to 1, and the reliability threshold β of the wireless micro-power link is in the range of 0.5 to 1.

[0059] In step S03 of this embodiment, the optimal communication path is selected according to the maximum average routing link reliability criterion. In the available link set uselinkSet, the average routing link reliability C is maximized as the optimization goal, and the selected path meets the preset delay upper limit threshold H t and the upper threshold of packet loss rate H l Under these conditions, the shortest path method is used to search for the best data transmission path P with source node S and target node D. opt , that is, the optimal communication path is obtained.

[0060] Assume that the upper limit of delay and upper limit of packet loss rate of the communication quality of the service metering service to be transmitted are H t and H l , the data transmission source node and the target node are S and D respectively. In the available link set uselinkSet, multiple links are selected between the source node S and the target node D to form a data transmission path. The number of power line carrier links included is marked as k, the number of micro-power wireless links is marked as n, and the number of hybrid links is marked as m. In this embodiment, the average routing link reliability function C is specifically calculated according to the following formula:

[0061]

[0062] Where P is the selected link set, W i,j is the link reliability of the path, and the calculation formula is:

[0063]

[0064] According to the current number of power line carrier links and micro-power wireless links, the average routing link reliability function C is calculated according to formula (5), and the link reliability W of the constituent path is calculated according to formula (6): i,j In the available link set uselinkSet, the average routing link reliability C is maximized as the optimization goal, and the selected path meets the delay upper limit H t and the upper limit of packet loss rate H l Under these conditions, the shortest path method is used to search for the best data transmission path P with source node S and target node D. opt .

[0065] This embodiment selects the available links for data transmission of metering services in the distribution network substation according to the principle of communication reliability, and selects the optimal link in combination with the maximum reliability criterion of the average routing link. It can quickly screen out links with high communication reliability while ensuring the maximum reliability of the average routing link, which can greatly improve the communication reliability and communication quality of data transmission in the substation.

[0066] The following takes the use of the above method of the present invention in a specific application embodiment to realize the dual-mode hybrid data transmission control of the distribution network area as an example to further illustrate the present invention. The detailed steps for realizing the dual-mode hybrid data transmission control of the distribution network area are as follows:

[0067] S1. Obtaining the link communication parameter information between dual-mode terminals in the distribution network area

[0068] The total number of nodes in the dual-mode communication network is identified as N = 4. The dual-mode communication link between the dual-mode terminal communication node i and the node j includes a power line carrier link and a micro-power wireless link. Assume that the current period is T k , where k is the cycle number, T k The value is 10 minutes; in the current cycle T k For each dual-mode communication link R consisting of node i and node j, i,j (i≠j), statistics to obtain R i,j Mean signal-to-noise ratio of power line carrier links and the mean packet loss rate Statistically obtain the average transmit power of a micro-power wireless link Mean packet loss rate The statistical results are shown in Table 1.

[0069] Table 1 Link statistics

[0070]

[0071] Setting the signal-to-noise ratio threshold of a power line carrier link in a dual-mode communication network Packet loss rate threshold Set the transmit power threshold of the micro-power wireless link Packet loss rate threshold According to the formula Calculating the Normalized Signal-to-Noise Ratio of Power Line Carrier Links According to the formula Calculate the normalized packet loss rate of power line carrier links According to the formula Calculating Normalized Transmit Power for Micropower Wireless Links According to the formula Calculating Normalized Packet Loss Rate for Micropower Wireless Links The calculation results are shown in Table 2.

[0072] Table 2 Link statistics normalization

[0073]

[0074] S2. Calculate the link communication service quality factor between dual-mode terminals in the distribution network area

[0075] In a dual-mode communication network, for each pair of adjacent nodes i and j, the communication link R i,j , according to the formula Calculate the transmission reliability factor p of the power line carrier link i,j According to the formula Calculate the transmission reliability factor q of micropower wireless links i,j According to the formula Calculate the transmission reliability factor r of the hybrid redundant link (including power line carrier link and micro-power wireless link) i,j , where γ is 0.5. The calculation results are shown in Table 3.

[0076] Table 3 Link reliability factor calculation results

[0077] <![CDATA[p i,j ]]> <![CDATA[q i,j ]]> <![CDATA[r i,j ]]> <![CDATA[R 1,2 ]]> 0.3 0.75 0.68 <![CDATA[R 1,3 ]]> 0.2 0.9 0.75 <![CDATA[R 2,3 ]]> 0.9 0.3 0.54 <![CDATA[R 2,4 ]]> 0.2 0.05 0.75 <![CDATA[R 3,4 ]]> 0.8 0.3 0.59

[0078] S3. Select all available links for data transmission used in the current cycle according to the principle of communication reliability.

[0079] In the dual-mode communication network, the communication reliability threshold of the power line carrier link is set to α = 0.7, and the reliability threshold of the wireless micro-power link is set to β = 0.7; in the current cycle T k For each communication link R consisting of node i and node j, i,j , according to the principle of first choosing power line carrier communication, second choosing micro-power wireless link, and finally choosing dual-mode link, the available links are selected according to the formula Select the communication link used in the current cycle, where Com(R i,j ) indicates the transmission mode used by the link, PLC is the power line carrier link, MR is the micro-power wireless link, DualMode indicates a hybrid redundant link, that is, the power line carrier link and the micro-power wireless link are used at the same time; all available links constitute the link set uselinkSet. The results of the available link selection are as follows Figure 3 As shown, the dotted line indicates that the wireless micro-power link is selected, the solid line indicates that the power line carrier communication link is selected, and the existence of the dotted line and the solid line at the same time indicates that the dual-mode link is selected.

[0080] S4. Select the optimal communication path according to the maximum average routing link reliability criterion

[0081] Set the upper limit of delay and upper limit of packet loss rate of the communication quality of service for the business metering class to be transmitted as H t =10 and H t =10, and let the data transmission source node and target node be S and D respectively, S and D are node 1 and node 4 respectively; in the available link set uselinkSet, multiple links are selected between the source node S and the target node D to form a data transmission path, the number of power line carrier links included is marked as k, the number of micro-power wireless links is marked as n, and the number of hybrid links is marked as m; according to the formula Calculate the average routing link reliability function C, where P is the selected link set, according to the formula Calculate the reliability W of the links that make up the path i,j , the link reliability calculation results are shown in Table 4.

[0082] Table 4 Link reliability calculation results

[0083] <![CDATA[R 1,2 ]]> <![CDATA[R 1,3 ]]> <![CDATA[R 2,3 ]]> <![CDATA[R 2,4 ]]> <![CDATA[R 3,4 ]]> 0.75 0.9 0.9 0.75 0.8

[0084] In the available link set uselinkSet, the average routing link reliability C is maximized as the optimization goal, and the selected path meets the delay upper limit H t and the upper limit of packet loss rate H l Under these conditions, the shortest path method is used to search for the best data transmission path P with source node S and target node D. opt (i.e. the optimal communication path); the optimal transmission path searched is as follows Figure 4 As shown, the bold part represents the best data transmission path.

[0085] S5. Transmit power metering service data according to the optimal communication path

[0086] For a given power metering service, the optimal data transmission path P is obtained according to the search result in step S4. opt For transmission, the receiving node that selects the hybrid redundant link needs to perform de-redundancy processing.

[0087] The best transmission path is Figure 4 As shown, for a given power metering service, according to the optimal data transmission path P searched in step S4, opt For transmission, the transmission path is: 1→3→4, where 1→3 selects a micro-power wireless link and 3→4 selects a power line carrier link.

[0088] The dual-mode hybrid data transmission control device of the distribution network area in this embodiment includes:

[0089] The communication parameter acquisition module is used to obtain the communication parameter information of each link between the terminals in the distribution network area. Each link between the terminals in the area adopts a power line carrier and micro-power wireless dual-mode communication mode;

[0090] The quality factor calculation module is used to calculate the communication service quality factor of each link between the terminals in the distribution network area according to the acquired communication parameter information of each link;

[0091] An available path selection module is used to select all available links for data transmission used in the current cycle according to the communication service quality factor of each link;

[0092] An optimal path determination module selects an optimal communication path from the selected available links for data transmission;

[0093] The data transmission control module is used to control the data transmission between terminals in the distribution network area according to the optimal communication path.

[0094] The distribution network substation dual-mode hybrid data transmission control device of this embodiment corresponds one to one with the above-mentioned distribution network substation dual-mode hybrid data transmission control method, and will not be described in detail here.

[0095] This embodiment also provides a computer device, including a processor and a memory, wherein the memory is used to store a computer program, and wherein the processor is used to execute the computer program to perform the above method.

[0096] This embodiment also provides a computer-readable storage medium storing a computer program, and when the computer program is executed, the above method is implemented.

[0097] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A dual-mode hybrid data transmission control method for a distribution network area, characterized in that the steps include: S01. Obtain communication parameter information of each link between terminals in the distribution network area, each link between terminals in the area is configured with a power line carrier and a micro-power wireless dual mode, the communication parameter information includes the communication parameters of the power line carrier link and the communication parameters of the micro-power wireless link, the communication parameters of the power line carrier link include the signal-to-noise ratio and / or the packet loss rate, and the communication parameters of the micro-power wireless link include any one or more of the transmission power, the packet loss rate, and the delay; S02. Calculate the communication service quality factor of each link between the distribution network terminals according to the communication parameter information obtained for each link; S03. According to the communication service quality factor of each link, select all available links for data transmission used in the current cycle; S04. Selecting the optimal communication path from the selected available links for data transmission; S05. Control the terminals in the distribution network area to transmit data according to the optimal communication path In step S02, specifically according to the formula Calculate the transmission reliability factor p of the power line carrier link i,j , according to the formula Calculate the transmission reliability factor q of micropower wireless links i,j According to the formula Calculate the transmission reliability factor r of the hybrid redundant link i,j , the hybrid redundant link is to use the power line carrier link and the micro-power wireless link at the same time, wherein is the normalized signal-to-noise ratio of the power line carrier link, is the normalized packet loss rate of the power line carrier link, γ is the preset coefficient value, i and i are the start and end nodes of the link respectively, Normalized transmit power for micro-power wireless links, Normalized packet loss rate for micro-power wireless link; In the step S03, the available links for data transmission are selected based on the principle of selecting power line carrier communication, micro-power wireless link, and dual-mode link in order of priority to obtain an available link set uselinkSet.

2. The method for controlling dual-mode hybrid data transmission in a distribution network area according to claim 1, characterized in that: In step S03, the available link for data transmission used in the current cycle is selected according to the following formula: Among them, Com(R i,j ) represents R i,j The transmission mode used by the link, i and i are the start and end nodes of the link respectively, PLC is the power line carrier link, MR is the micro-power wireless link, DualMode represents a hybrid redundant link, that is, the power line carrier link and the micro-power wireless link are used at the same time, α represents the communication reliability threshold of the power line carrier link, and β represents the reliability threshold of the wireless micro-power link.

3. The distribution network area dual-mode hybrid data transmission control method according to any one of claims 1 to 2, characterized in that: In step S03, the optimal communication path is selected according to the maximum average routing link reliability criterion. In the available link set uselinkSet, the average routing link reliability C is maximized as the optimization goal, and the selected path meets the preset delay upper limit threshold H t and the upper threshold of packet loss rate H l Under these conditions, the shortest path method is used to search for the best data transmission path P with source node S and target node D. opt , that is, the optimal communication path is obtained.

4. The method for controlling dual-mode hybrid data transmission in a distribution network area according to claim 3, characterized in that: According to the formula Calculate the average routing link reliability function C, where P is the selected link set, k is the number of power line carrier links, n is the number of micro-power wireless links, m is the number of hybrid links, W i,j is the link reliability of the path, i and i are the starting and ending nodes of the link respectively, and the calculation formula is: Among them, Com(R i,j ) represents R i,j The transmission mode used by the link, PLC is a power line carrier link, Wireless is a micro-power wireless link, DualMode indicates a hybrid redundant link, p i,j represents the transmission reliability factor of the power line carrier link, q i,j represents the transmission reliability factor of the micro-power wireless link, r i,j Represents the transmission reliability factor of the hybrid redundant link.

5. A dual-mode hybrid data transmission control device for a distribution network area, characterized in that: include: A communication parameter acquisition module, used to obtain communication parameter information of each link between terminals in the distribution network substation, each link between terminals in the substation is configured with a power line carrier and a micro-power wireless dual mode, the communication parameter information includes the communication parameters of the power line carrier link and the communication parameters of the micro-power wireless link, the communication parameters of the power line carrier link include the signal-to-noise ratio and / or the packet loss rate, and the communication parameters of the micro-power wireless link include any one or more of the transmission power, the packet loss rate, and the delay; A quality factor calculation module, used to calculate the communication service quality factor of each link between the terminals in the distribution network area according to the communication parameter information of each link obtained; An available path selection module, used to select all available links for data transmission used in the current cycle according to the communication service quality factor of each link; An optimal path determination module selects an optimal communication path from the selected available links for data transmission; A data transmission control module, used to control the data transmission between terminals in the distribution network area according to the optimal communication path; In the quality factor calculation module, specifically according to the formula Calculate the transmission reliability factor p of the power line carrier link i,j , according to the formula Calculate the transmission reliability factor q of micropower wireless links i,j According to the formula Calculate the transmission reliability factor r of the hybrid redundant link i,j , the hybrid redundant link is to use the power line carrier link and the micro-power wireless link at the same time, wherein is the normalized signal-to-noise ratio of the power line carrier link, is the normalized packet loss rate of the power line carrier link, γ is the preset coefficient value, i and i are the start and end nodes of the link respectively, Normalized transmit power for micro-power wireless links, Normalized packet loss rate for micro-power wireless link; In the available path selection module, the power line carrier communication, micro-power wireless link and dual-mode link are selected in order of priority to select the available link for data transmission and obtain the available link set uselinkSet.

6. A computer device comprising a processor and a memory, wherein the memory is used to store a computer program, wherein: The processor is configured to execute the computer program to perform the method according to any one of claims 1 to 4.

7. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed, the method according to any one of claims 1 to 4 is implemented.

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