A method and system for optimizing medium-voltage carrier communication in high-penetration power grids

Abstract

This invention relates to the field of communication optimization technology, specifically disclosing a method and system for optimizing medium-voltage carrier communication in high-penetration power grids. The method includes: constructing a medium-voltage carrier communication channel transmission model in a high-penetration power grid, obtaining the medium-voltage carrier communication channel fading factor, analyzing the interference characteristics and communication channel characteristics of the medium-voltage carrier communication channel in a high-penetration power grid, determining the medium-voltage carrier communication channel quality, obtaining the medium-voltage carrier communication transmission requirements, determining the optimal deployment scheme for relay nodes, selecting the optimal frequency range for the medium-voltage carrier communication channel in a high-penetration power grid, and judging whether the relay node forwarding efficiency is qualified. This invention solves the problems of insufficient reliability, insufficient network topology adaptability, poor anti-interference capability, and slow response to dynamic topology changes in traditional medium-voltage carrier communication methods. It can better adapt to complex environments and ensure stable operation of the communication system under various operating conditions.

Description

Technical Field

[0001] This invention relates to the field of communication optimization technology, specifically to a method and system for optimizing medium-voltage carrier communication in high-penetration power grids. Background Technology

[0002] With the continuous development of modern power grids, high-penetration power grids have become a trend. High-penetration power grids involve the extensive integration of distributed energy resources (solar, wind, etc.), which complicates the grid's topology. Simultaneously, the construction of smart grids is progressing rapidly. The widespread application of smart meters, distribution automation terminals, and other equipment has increased the power grid's demand for and reliance on communication. Medium-voltage carrier communication, as a communication method that utilizes existing power lines for data transmission, has potential application value in smart grid communication systems. While medium-voltage carrier communication has the advantage of not requiring additional communication lines, in high-penetration power grid environments, the increased signal interference sources on power lines and the complex grid topology leading to signal attenuation and reflection increase path loss and reduce transmission reliability.

[0003] Currently, research on the optimization of medium-voltage carrier communication in high-penetration power grids still has some shortcomings. Specifically, traditional medium-voltage carrier communication methods suffer from insufficient transmission reliability when facing the complex electromagnetic environment and network structure of high-penetration power grids. Furthermore, traditional network topology adaptability is insufficient, anti-interference capability is poor, and response to dynamic topology changes is slow, thus affecting communication reliability. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a method and system for optimizing medium-voltage carrier communication in high-penetration power grids, which can effectively solve the problems mentioned in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The first aspect of the present invention provides an optimization method for medium-voltage carrier communication in a high-penetration power grid, comprising the following steps: constructing a medium-voltage carrier communication channel transmission model in a high-penetration power grid; analyzing and obtaining the channel multipath fading factor and the channel shadowing fading factor; obtaining the medium-voltage carrier communication channel fading factor based on the channel multipath fading factor and the channel shadowing fading factor; and analyzing the interference characteristics of the medium-voltage carrier communication channel in a high-penetration power grid to obtain the medium-voltage carrier communication channel interference signal.

[0006] The characteristics of medium-voltage carrier communication channels in high-penetration power grids are analyzed. The quality of medium-voltage carrier communication channels is determined by combining interference signals and fading factors. The transmission requirements of medium-voltage carrier communication are obtained, and based on the channel quality, an optimized deployment scheme for relay nodes is determined, and an optimized frequency range for medium-voltage carrier communication channels in high-penetration power grids is selected. A forwarding delay model for optimized relay nodes is constructed to determine whether the forwarding efficiency of relay nodes is acceptable, and an optimization scheme for unacceptable relay node forwarding efficiency is determined.

[0007] As a further method, a transmission model of a medium-voltage carrier communication channel in a high-penetration power grid is constructed, and the channel multipath fading factor and channel shadowing fading factor are analyzed. The specific analysis process is as follows: Constructing a transmission model of a medium-voltage carrier communication channel in a high-penetration power grid:

[0008] ;

[0009] In the formula, This is the channel multipath fading factor. Let be the attenuation coefficient of the k-th channel transmission path. Pi For carrier frequency, Let be the transmission delay of the k-th channel transmission path, j be the imaginary unit, e be the natural constant, k be the channel transmission path number, k=1,2,3,...,N, and N be the total number of channel transmission paths;

[0010] Calculate the channel shadowing fading factor:

[0011] ;

[0012] In the formula, The channel shadowing fading factor. The standard deviation of shadow fading is stored in the database. These are random numbers that follow a standard normal distribution.

[0013] As a further method, based on the channel multipath fading factor and the channel shadowing fading factor, the channel fading factor of medium-voltage carrier communication is obtained. The specific analysis process is as follows: The specific calculation formula for the channel fading factor of medium-voltage carrier communication is:

[0014] ;

[0015] In the formula, This represents the fading factor of a medium-voltage carrier communication channel.

[0016] As a further method, the interference characteristics of medium-voltage carrier communication channels in high-permeability power grids are analyzed to obtain the interference signal of medium-voltage carrier communication channels. The specific analysis process is as follows: acquiring interference characteristic data of medium-voltage carrier communication channels in high-permeability power grids, including electromagnetic pulse peak power, harmonic average frequency, and sunspot number; based on the acquired interference characteristic data of medium-voltage carrier communication channels in high-permeability power grids, a comprehensive analysis is conducted to obtain the interference signal of medium-voltage carrier communication channels, which serves as the basis for determining the quality of medium-voltage carrier communication channels.

[0017] As a further method, the specific analysis process for interference signals in medium-voltage carrier communication channels is as follows:

[0018] ;

[0019] In the formula, This is an interference signal for medium-voltage carrier communication channels. The peak power of the electromagnetic pulse. The harmonic average frequency, The number of sunspots. For setting Compensation factor, For setting Compensation factor, For setting The compensation factor is e, where e is the natural constant.

[0020] As a further method, the characteristics of the medium-voltage carrier communication channel in a high-penetration power grid are analyzed. Combining the interference signal and fading factor of the medium-voltage carrier communication channel, the quality of the medium-voltage carrier communication channel is determined. The specific analysis process is as follows: Calculate the signal-to-noise ratio of the medium-voltage carrier communication channel in a high-penetration power grid.

[0021] ;

[0022] In the formula, SNR is the signal-to-noise ratio of a medium-voltage carrier communication channel in a high-penetration power grid. The signal power dynamic adjustment factor is stored in the database. This is the channel multipath fading factor. The noise power spectral density;

[0023] Calculate the bit error rate of a medium-voltage carrier communication channel in a high-penetration power grid:

[0024] ;

[0025] In the formula, BER is the bit error rate of the medium-voltage carrier communication channel in a high-penetration power grid. The number of transmission errors. The total number of codes transmitted;

[0026] Based on the signal-to-noise ratio, bit error rate, interference signal, and fading factor of the medium-voltage carrier communication channel in a high-penetration power grid, the characteristics of the medium-voltage carrier communication channel are obtained through comprehensive analysis. These characteristics serve as the basis for determining the quality of the medium-voltage carrier communication channel.

[0027] The channel characteristics of medium-voltage carrier communication are specifically calculated using the following formula:

[0028] ;

[0029] In the formula, This is a characteristic of medium-voltage carrier communication channels. This is the fading factor for medium-voltage carrier communication channels. This is an interference signal for medium-voltage carrier communication channels. The compensation factor for the set SNR, The compensation factor for the set BER. For setting Compensation factor, For setting Compensation factor;

[0030] Retrieve the pre-stored medium-voltage carrier communication channel feature-medium-voltage carrier communication channel quality mapping table from the database. By searching the mapping table, find the matching medium-voltage carrier communication channel quality based on the medium-voltage carrier communication channel features.

[0031] As a further method, the transmission requirements of medium-voltage carrier communication are obtained. The specific analysis process is as follows: obtain the transmission distance of medium-voltage carrier communication. ; Obtain the target transmission rate of the medium-voltage carrier communication channel The medium-voltage carrier communication transmission distance and the target transmission rate of the medium-voltage carrier communication channel are denoted as the medium-voltage carrier communication transmission requirement.

[0032] As a further method, in combination with the quality of medium-voltage carrier communication channels, the optimal deployment scheme of relay nodes is determined and the optimal frequency range of medium-voltage carrier communication channels in high-penetration power grids is selected. The specific analysis process is as follows: the medium-voltage carrier communication transmission distance, the target transmission rate of medium-voltage carrier communication channels, and the quality of medium-voltage carrier communication channels are stored as specified tags. The specified tag-relay node optimal deployment scheme mapping table stored in the database is obtained. By searching the mapping table, the matching optimal deployment scheme of relay nodes is found according to the specified tags.

[0033] Calculate the frequency range selection criteria for medium-voltage carrier communication channels in high-penetration power grids:

[0034] ;

[0035] In the formula, For interval Indicators for selecting frequency ranges for medium-voltage carrier communication channels in high-penetration power grids For interval The average signal-to-noise ratio, For interval Available channel bandwidth, For setting Weighting factors For setting Weighting factors;

[0036] The frequency range corresponding to the maximum value among the selection indicators for each frequency range of the medium-voltage carrier communication channel in a high-penetration power grid is the optimized frequency range for the medium-voltage carrier communication channel in a high-penetration power grid. For interval The minimum frequency, For interval The maximum frequency.

[0037] As a further method, a forwarding delay model for the optimized relay nodes is constructed to determine whether the forwarding efficiency of the relay nodes is acceptable, and to identify optimization schemes for the forwarding efficiency of unacceptable relay nodes. The specific analysis process is as follows: Constructing a forwarding delay model for the optimized relay nodes:

[0038] ;

[0039] In the formula, This represents the total forwarding delay of the relay node. Due to the processing delay of relay nodes, The allowed processing latency for relay nodes stored in the database. For the transmission delay of relay nodes, The allowed transmission latency for relay nodes stored in the database. Queuing delay for relay nodes, The allowed queuing delay for relay nodes stored in the database. For setting Compensation factor, For setting Compensation factor, For setting Compensation factor;

[0040] The total forwarding delay of the relay node is compared with the total forwarding threshold delay of the relay node stored in the database. If the total forwarding delay of the relay node is lower than the total forwarding threshold delay, the forwarding efficiency of the relay node corresponding to the total forwarding delay is qualified. If the total forwarding delay of the relay node is not lower than the total forwarding threshold delay, the forwarding efficiency of the relay node corresponding to the total forwarding delay is unqualified. The optimization scheme mapping table of total forwarding delay and forwarding efficiency of the relay node, which is pre-stored in the database, is obtained. By looking up the mapping table, the matching optimization scheme of the forwarding efficiency of the relay node is found according to the total forwarding delay of the relay node.

[0041] A second aspect of this invention provides a medium-voltage carrier communication optimization system for high-penetration power grids, comprising a channel fading factor analysis module, a channel interference signal analysis module, a communication channel quality determination module, a relay node optimization deployment module, and a forwarding efficiency optimization scheme determination module. The channel fading factor analysis module is used to construct a medium-voltage carrier communication channel transmission model in a high-penetration power grid, analyze and obtain the channel multipath fading factor and the channel shadowing fading factor, and obtain the medium-voltage carrier communication channel fading factor based on the channel multipath fading factor and the channel shadowing fading factor. The channel interference signal analysis module is used to analyze the interference characteristics of the medium-voltage carrier communication channel in a high-penetration power grid to obtain the medium-voltage carrier communication channel interference signal.

[0042] The communication channel quality determination module is used to analyze the characteristics of medium-voltage carrier communication channels in high-penetration power grids, and determine the quality of medium-voltage carrier communication channels by combining the interference signals and fading factors of medium-voltage carrier communication channels. The relay node optimization deployment module is used to obtain the transmission requirements of medium-voltage carrier communication, determine the optimal deployment scheme of relay nodes and select the optimal frequency range of medium-voltage carrier communication channels in high-penetration power grids by combining the medium-voltage carrier communication channel quality. The forwarding efficiency optimization scheme determination module is used to construct a forwarding delay model of the optimized relay nodes, determine whether the forwarding efficiency of the relay nodes is qualified, and determine the optimization scheme for the forwarding efficiency of unqualified relay nodes.

[0043] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0044] (1) This invention provides a method and system for optimizing medium-voltage carrier communication in high-penetration power grids. By constructing a transmission model to analyze fading factors, the attenuation characteristics of the channel can be accurately grasped. This allows for a more accurate assessment of the medium-voltage carrier communication channel quality and early detection of factors that could lead to communication interruptions or errors. Analyzing channel interference characteristics enables targeted anti-interference measures to be taken during communication. Obtaining transmission requirements and combining them with channel quality to determine the optimal deployment scheme for relay nodes allows relay nodes to play their maximum role in high-penetration power grids.

[0045] (2) This invention optimizes the frequency range by selecting a suitable medium-voltage carrier communication channel, enabling communication using frequencies with better channel quality. Constructing a relay node forwarding delay model and determining whether the forwarding efficiency is acceptable can improve the relay node forwarding efficiency. This comprehensive optimization method is better suited to such complex environments, ensuring stable operation of the communication system under various conditions.

[0046] (3) This invention analyzes the characteristics of medium-voltage carrier communication channels in high-penetration power grids, and determines the quality of medium-voltage carrier communication channels by combining the interference signals and fading factors of the medium-voltage carrier communication channels. This helps to predict communication risks in advance. If the channel quality is poor, high bit error rates and signal interruptions can be anticipated during communication, thus avoiding serious impacts on power grid operation caused by communication failures. After clarifying the channel quality, targeted anti-interference strategies can be formulated based on the characteristics of the interference signals. Attached Figure Description

[0047] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0048] Figure 1 This is a schematic diagram of the method steps of the present invention.

[0049] Figure 2 This is a schematic diagram of the system module connections of the present invention. Detailed Implementation

[0050] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0051] Reference Figure 1 As shown, the first aspect of the present invention provides an optimization method for medium-voltage carrier communication in a high-penetration power grid, comprising: constructing a medium-voltage carrier communication channel transmission model in a high-penetration power grid, analyzing and obtaining the channel multipath fading factor and the channel shadow fading factor, and obtaining the medium-voltage carrier communication channel fading factor based on the channel multipath fading factor and the channel shadow fading factor.

[0052] The specific analysis process is as follows: Constructing a transmission model for a medium-voltage carrier communication channel in a high-penetration power grid:

[0053] ;

[0054] In the formula, This is the channel multipath fading factor. Let be the attenuation coefficient of the k-th channel transmission path. Pi For carrier frequency, Let be the transmission delay of the k-th channel transmission path, j be the imaginary unit, e be the natural constant, k be the channel transmission path number, k=1,2,3,...,N, and N be the total number of channel transmission paths;

[0055] Calculate the channel shadowing fading factor:

[0056] ;

[0057] In the formula, The channel shadowing fading factor. The standard deviation of shadow fading is stored in the database. These are random numbers that follow a standard normal distribution.

[0058] Based on the channel multipath fading factor and the channel shadowing fading factor, the channel fading factor of medium-voltage carrier communication is obtained. The specific analysis process is as follows: The specific calculation formula for the channel fading factor of medium-voltage carrier communication is:

[0059] ;

[0060] In the formula, This represents the fading factor of a medium-voltage carrier communication channel.

[0061] By constructing a transmission model for medium-voltage carrier communication channels in high-penetration power grids, the transmission characteristics of the channel can be accurately described. This involves parameters such as the channel multipath fading factor, the attenuation coefficient of each transmission path, carrier frequency, and transmission delay. This allows for a deeper understanding of the channel's behavior under different conditions, including signal attenuation and phase changes during multipath transmission. Not only can the channel multipath fading factor be obtained, but the channel shadowing fading factor and the final medium-voltage carrier communication channel fading factor can also be calculated. This facilitates accurate analysis and evaluation of channel conditions in different scenarios.

[0062] The fading factor of medium-voltage carrier communication channels serves as an analytical basis for determining channel quality, comprehensively reflecting the fading situation, including the combined effects of multipath fading and shadowing fading. It allows for a more accurate assessment of channel quality in high-penetration power grid environments, such as determining whether the channel is suitable for high-speed data transmission or whether additional measures are needed to improve channel quality. This is crucial for ensuring reliable communication between various devices within the power grid.

[0063] In high-penetration power grids, the extensive integration of distributed energy sources and the complexity of the grid topology make medium-voltage carrier communication channels susceptible to various factors, such as harmonic interference, signal reflection, and attenuation. The method described above, by constructing a comprehensive transmission model and calculating the fading factor, fully considers these complex factors and can more realistically reflect the channel characteristics in a high-penetration power grid environment. This allows the design and optimization of the communication system to better adapt to this complex environment, ensuring good communication performance under various operating conditions and providing strong communication support for the stable operation of high-penetration power grids.

[0064] The interference characteristics of medium-voltage carrier communication channels in high-penetration power grids are analyzed to obtain the interference signals of medium-voltage carrier communication channels.

[0065] The specific analysis process is as follows: Obtain interference characteristic data of medium-voltage carrier communication channels in high-penetration power grids. The interference characteristic data of medium-voltage carrier communication channels in high-penetration power grids specifically includes electromagnetic pulse peak power, harmonic average frequency, and sunspot number. Based on the obtained interference characteristic data of medium-voltage carrier communication channels in high-penetration power grids, a comprehensive analysis is conducted to obtain the interference signal of medium-voltage carrier communication channels. The interference signal of medium-voltage carrier communication channels is used as the basis for determining the quality of medium-voltage carrier communication channels.

[0066] The specific analysis process for interference signals in medium-voltage carrier communication channels is as follows:

[0067] ;

[0068] In the formula, This is an interference signal for medium-voltage carrier communication channels. The peak power of the electromagnetic pulse. The harmonic average frequency, The number of sunspots. For setting Compensation factor, For setting Compensation factor, For setting The compensation factor is e, where e is the natural constant.

[0069] By acquiring interference characteristic data for medium-voltage carrier communication channels in high-penetration power grids, including peak electromagnetic pulse power, average harmonic frequency, and sunspot number, a comprehensive overview of various interference sources affecting communication channels can be achieved. In high-penetration power grid environments, electromagnetic pulses originate from switching operations of power electronic equipment, harmonics are generated by distributed energy resource integration, and changes in sunspot number affect the ionosphere, thus impacting communication. Integrating these factors allows for a more comprehensive and accurate assessment of the interference's impact on the channel, avoiding the incomplete assessments caused by considering only a single interference factor.

[0070] Various interference factors are quantified using mathematical models. This provides an intuitive numerical representation of the interference level, facilitating comparison and analysis of interference in different scenarios. Interference signals in medium-voltage carrier communication channels, as a crucial analytical basis for determining channel quality, work in conjunction with factors such as the aforementioned channel fading factor to more accurately determine channel quality. Channel quality depends not only on signal attenuation but also significantly on the reliability of communication and the accuracy of data transmission due to interference. By incorporating interference signals into the channel quality assessment system, a more comprehensive understanding of the actual channel condition can be achieved, leading to a more accurate assessment of whether the channel meets communication requirements, such as supporting high-speed, low-error-rate data transmission. Once the specific values ​​and components of the interference signals are clearly defined, targeted anti-interference strategies can be developed.

[0071] In high-penetration power grids, various interference factors intertwine, creating a complex and ever-changing environment. Detailed analysis and quantification of channel interference characteristics allow for better adaptation to this complex environment. This enables timely detection of interference trends and major sources, allowing for proactive preventative and response measures to ensure stable operation of medium-voltage carrier communication in complex power grid environments. This is crucial for ensuring reliable communication between devices such as smart meters and distributed energy management systems within the power grid, thereby guaranteeing the normal operation of automated monitoring, control, and energy management functions, and improving the overall operational efficiency and security of the power grid.

[0072] The characteristics of medium-voltage carrier communication channels in high-penetration power grids are analyzed, and the quality of medium-voltage carrier communication channels is determined by combining the interference signals and fading factors of medium-voltage carrier communication channels.

[0073] The specific analysis process is as follows: Calculate the signal-to-noise ratio of the medium-voltage carrier communication channel in a high-penetration power grid:

[0074] ;

[0075] In the formula, SNR is the signal-to-noise ratio of a medium-voltage carrier communication channel in a high-penetration power grid. The signal power dynamic adjustment factor is stored in the database. This is the channel multipath fading factor. The noise power spectral density;

[0076] Calculate the bit error rate of a medium-voltage carrier communication channel in a high-penetration power grid:

[0077] ;

[0078] In the formula, BER is the bit error rate of the medium-voltage carrier communication channel in a high-penetration power grid. The number of transmission errors. The total number of codes transmitted;

[0079] Based on the signal-to-noise ratio, bit error rate, interference signal, and fading factor of the medium-voltage carrier communication channel in a high-penetration power grid, the characteristics of the medium-voltage carrier communication channel are obtained through comprehensive analysis. These characteristics serve as the basis for determining the quality of the medium-voltage carrier communication channel.

[0080] The channel characteristics of medium-voltage carrier communication are specifically calculated using the following formula:

[0081] ;

[0082] In the formula, This is a characteristic of medium-voltage carrier communication channels. This is the fading factor for medium-voltage carrier communication channels. This is an interference signal for medium-voltage carrier communication channels. The compensation factor for the set SNR, The compensation factor for the set BER. For setting Compensation factor, For setting Compensation factor;

[0083] Retrieve the pre-stored medium-voltage carrier communication channel feature-medium-voltage carrier communication channel quality mapping table from the database. By searching the mapping table, find the matching medium-voltage carrier communication channel quality based on the medium-voltage carrier communication channel features.

[0084] By calculating the signal-to-noise ratio (SNR) and bit error rate (BER) of a medium-voltage carrier communication channel in a high-penetration power grid, and combining this with the channel fading factor and interference signals, the characteristics of the medium-voltage carrier communication channel are comprehensively analyzed. This approach, which considers multiple factors, can comprehensively and accurately reflect the actual quality of the channel. The SNR reflects the relative strength of the signal and noise, the BER reflects the accuracy of data transmission, the fading factor characterizes the attenuation of the signal during transmission, and the interference signal represents the impact of external interference on the channel. Integrating these factors avoids the one-sidedness of evaluating a single indicator and allows for a more accurate grasp of the channel quality.

[0085] In high-penetration power grids, the extensive integration of distributed energy resources, complex grid topologies, and variable electromagnetic environments pose numerous challenges to medium-voltage carrier communication channels. The method described above, through comprehensive analysis of various channel characteristic parameters, can better adapt to this complex environment. The fading factor considers signal attenuation in complex power grid lines, and the interference signals encompass the effects of various interference sources such as electromagnetic pulses and harmonics, all of which are closely related to the actual conditions of high-penetration power grids. Through this comprehensive analysis, a more accurate understanding of the channel's performance in high-penetration power grid environments can be achieved.

[0086] By retrieving a pre-stored mapping table of medium-voltage carrier communication channel characteristics and channel quality from the database, the system can quickly find matching channel quality based on the calculated channel characteristics. This method significantly improves the efficiency of channel quality assessment, providing rapid reference for the operation and maintenance of the communication system, allowing for timely adjustments to system parameters or the implementation of appropriate measures to ensure the communication system remains in good operating condition. Furthermore, the mapping table facilitates batch assessment and management of a large number of channels, improving work efficiency and management level.

[0087] To determine the transmission requirements of medium-voltage carrier communication, and considering the quality of the medium-voltage carrier communication channel, we will determine the optimal deployment scheme for relay nodes and select the optimal frequency range for medium-voltage carrier communication channels in high-penetration power grids.

[0088] Specifically, to obtain the transmission requirements of medium-voltage carrier communication, the specific analysis process is as follows: obtain the transmission distance of medium-voltage carrier communication. ; Obtain the target transmission rate of the medium-voltage carrier communication channel The specific data on medium-voltage carrier communication transmission requirements include the medium-voltage carrier communication transmission distance and the target transmission rate of the medium-voltage carrier communication channel.

[0089] The transmission distance, target transmission rate, and quality of medium-voltage carrier communication channels are stored as specified tags. The specified tag-relay node optimization deployment scheme mapping table is obtained from the database. By searching the mapping table, the matching relay node optimization deployment scheme is found according to the specified tag.

[0090] Calculate the frequency range selection criteria for medium-voltage carrier communication channels in high-penetration power grids:

[0091] ;

[0092] In the formula, For interval Indicators for selecting frequency ranges for medium-voltage carrier communication channels in high-penetration power grids For interval The average signal-to-noise ratio, For interval Available channel bandwidth, For setting Weighting factors For setting Weighting factors;

[0093] The frequency range corresponding to the maximum value among the selection indicators for each frequency range of the medium-voltage carrier communication channel in a high-penetration power grid is the optimized frequency range for the medium-voltage carrier communication channel in a high-penetration power grid. For interval The minimum frequency, For interval The maximum frequency.

[0094] By acquiring specific transmission requirement data such as the transmission distance and target transmission rate of medium-voltage carrier communication, and combining this with the previously evaluated channel quality, a more accurate optimization deployment scheme for relay nodes can be determined. For example, in cases of long transmission distances and poor channel quality, a mapping table can be used to find suitable solutions for increasing the number of relay nodes or adjusting their locations to ensure effective signal transmission and meet the target transmission rate requirements. This deployment scheme determination method based on actual transmission needs and channel quality improves the targeting and effectiveness of the communication system, avoiding resource waste and unreasonable deployment.

[0095] This paper calculates the frequency range selection index for medium-voltage carrier communication channels in high-penetration power grids, considering the average signal-to-noise ratio (SNR) and available channel bandwidth of the range. By setting weighting factors, it can scientifically select the optimal frequency range for medium-voltage carrier communication channels. This method comprehensively considers signal quality (SNR) and bandwidth resources, avoiding the problem of poor communication performance caused by selecting frequencies based on only a single factor.

[0096] Selecting the optimal frequency range can improve spectrum utilization efficiency. In high-penetration power grids, spectrum resources are limited. This scientific frequency range selection method can identify frequency ranges with high signal-to-noise ratios and large available bandwidth, enabling communication systems to achieve higher data transmission rates and better communication quality within limited spectrum resources. This is of great significance for improving the overall performance and capacity of power grid communication systems, and also helps reduce frequency interference between different communication systems, ensuring smooth power grid communication.

[0097] Based on transmission requirements, and taking into account relay node deployment and frequency range selection, the overall optimization of the medium-voltage carrier communication system was achieved. This comprehensive optimization fully leverages the potential of the communication system, improving its overall efficiency and performance.

[0098] A relay node forwarding delay model with optimized deployment is constructed to determine whether the relay node forwarding efficiency is up to standard, and to determine an optimization scheme for the forwarding efficiency of unqualified relay nodes.

[0099] The specific analysis process is as follows: Construct a relay node forwarding delay model after optimization and deployment:

[0100] ;

[0101] In the formula, This represents the total forwarding delay of the relay node. Due to the processing delay of relay nodes, The allowed processing latency for relay nodes stored in the database. For the transmission delay of relay nodes, The allowed transmission latency for relay nodes stored in the database. Queuing delay for relay nodes, The allowed queuing delay for relay nodes stored in the database. For setting Compensation factor, For setting Compensation factor, For setting The compensation factor.

[0102] The total forwarding delay of the relay node is compared with the total forwarding threshold delay of the relay node stored in the database. If the total forwarding delay of the relay node is lower than the total forwarding threshold delay, the forwarding efficiency of the relay node corresponding to the total forwarding delay is qualified. If the total forwarding delay of the relay node is not lower than the total forwarding threshold delay, the forwarding efficiency of the relay node corresponding to the total forwarding delay is unqualified. The optimization scheme mapping table of total forwarding delay and forwarding efficiency of the relay node, which is pre-stored in the database, is obtained. By looking up the mapping table, the matching optimization scheme of the forwarding efficiency of the relay node is found according to the total forwarding delay of the relay node.

[0103] By constructing a relay node forwarding delay model, it is clearly defined that the total forwarding delay of a relay node consists of factors such as processing delay, transmission delay, and queuing delay. By comparing this model with the allowed processing delay, allowed transmission delay, and allowed queuing delay stored in the database, the forwarding delay of the relay node can be accurately quantified. This quantification method provides a concrete numerical basis for evaluating forwarding efficiency, moving beyond vague concepts and facilitating accurate assessment of relay node performance.

[0104] By comparing the total forwarding latency of relay nodes with the total forwarding threshold latency stored in the database, a clear determination can be made as to whether the forwarding efficiency of relay nodes is up to standard. This clear standard helps maintenance personnel quickly and accurately identify problematic relay nodes, promptly discover bottlenecks and potential fault points in the communication system, and provide a clear direction and basis for subsequent optimization and maintenance.

[0105] Once it's determined that a relay node's forwarding efficiency is substandard, a matching optimization solution can be quickly found by searching a pre-stored mapping table in the database that maps the relay node's total forwarding delay to its forwarding efficiency. This mapping table-based approach significantly improves the efficiency of the optimization process, reducing the time and cost of manual analysis and experimentation. Maintenance personnel can quickly take targeted measures based on the information in the mapping table, such as adjusting the relay node's hardware configuration, optimizing software algorithms, and improving network topology, to enhance the relay node's forwarding efficiency.

[0106] Relay nodes play a crucial role in signal forwarding and relaying in communication systems, and their forwarding efficiency directly impacts the performance and reliability of the entire system. By accurately evaluating and efficiently optimizing the forwarding efficiency of relay nodes, it is possible to ensure that signals pass through them quickly and accurately during transmission, reducing the risk of delays and data loss.

[0107] Reference Figure 2 As shown, the second aspect of the present invention provides a medium-voltage carrier communication optimization system in a high-penetration power grid, including a channel fading factor analysis module, a channel interference signal analysis module, a communication channel quality determination module, a relay node optimization deployment module, and a forwarding efficiency optimization scheme determination module.

[0108] The channel fading factor analysis module is used to construct a medium-voltage carrier communication channel transmission model in a high-penetration power grid, analyze and obtain the channel multipath fading factor and the channel shadow fading factor, and obtain the medium-voltage carrier communication channel fading factor based on the channel multipath fading factor and the channel shadow fading factor.

[0109] The channel interference signal analysis module is used to analyze the interference characteristics of medium-voltage carrier communication channels in high-penetration power grids and obtain the medium-voltage carrier communication channel interference signals.

[0110] The communication channel quality determination module is used to analyze the characteristics of medium-voltage carrier communication channels in high-penetration power grids, and determine the quality of medium-voltage carrier communication channels by combining the interference signals and fading factors of medium-voltage carrier communication channels.

[0111] The relay node optimization deployment module is used to obtain the medium-voltage carrier communication transmission requirements, determine the optimal deployment scheme of relay nodes and select the optimal frequency range of medium-voltage carrier communication channels in high-penetration power grids, in combination with the medium-voltage carrier communication channel quality.

[0112] The forwarding efficiency optimization scheme determination module is used to build a forwarding delay model of the relay node after optimization deployment, determine whether the forwarding efficiency of the relay node is qualified, and determine the optimization scheme for the forwarding efficiency of unqualified relay nodes.

[0113] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A method for optimizing medium voltage carrier communication in a high penetration power grid, characterized by, The method comprises the following steps: The channel multipath fading factor and the channel shadow fading factor are obtained by constructing a transmission model of the medium voltage carrier communication channel in the high penetration power grid. The interference signal of the medium voltage carrier communication channel is obtained by analyzing the interference characteristics of the medium voltage carrier communication channel in the high penetration power grid. The quality of the medium voltage carrier communication channel is determined by analyzing the characteristics of the medium voltage carrier communication channel in the high penetration power grid, combining the interference signal of the medium voltage carrier communication channel and the fading factor of the medium voltage carrier communication channel. The relay node optimization deployment scheme and the optimized frequency interval of the medium voltage carrier communication channel in the high penetration power grid are determined by combining the transmission requirements of the medium voltage carrier communication and the quality of the medium voltage carrier communication channel. The relay node forwarding delay model of the optimized deployment is constructed to determine whether the relay node forwarding efficiency is qualified and to determine the optimization scheme of the unqualified relay node forwarding efficiency. The channel multipath fading factor and the channel shadow fading factor are obtained by constructing a transmission model of the medium voltage carrier communication channel in the high penetration power grid. The channel shadow fading factor is calculated. ； wherein is a channel multipath fading factor, is an attenuation coefficient of the kth channel transmission path, is a circular constant, is a carrier frequency, is a transmission delay of the kth channel transmission path, j is an imaginary unit, e is a natural constant, k is a channel transmission path number, k = 1, 2, 3,..., N, and N is a total number of channel transmission paths; The fading factor of the medium voltage carrier communication channel is obtained based on the channel multipath fading factor and the channel shadow fading factor. ； wherein is a channel shadow fading factor, is a shadow fading standard deviation stored in a database, is a random number subject to a standard normal distribution; The relay node forwarding delay model of the optimized deployment is constructed to determine whether the relay node forwarding efficiency is qualified and to determine the optimization scheme of the unqualified relay node forwarding efficiency. ； In the formula, is a mid-pressure carrier communication channel fading factor; The relay node forwarding delay model of the optimized deployment is constructed. The total forwarding delay of the relay node is compared with the total forwarding delay of the relay node stored in the database. ； wherein is the total forwarding delay of the relay node, is the processing delay of the relay node, is the allowed processing delay of the relay node stored in the database, is the transmission delay of the relay node, is the allowed transmission delay of the relay node stored in the database, is the queuing delay of the relay node, is the allowed queuing delay of the relay node stored in the database, is the set compensation factor, is the set compensation factor, is the set compensation factor. If the total forwarding delay of the relay node is lower than the total forwarding delay of the relay node, the total forwarding delay of the relay node corresponds to the qualified relay node forwarding efficiency. If the total forwarding delay of the relay node is not lower than the total forwarding delay of the relay node, the total forwarding delay of the relay node corresponds to the unqualified relay node forwarding efficiency, the optimization scheme mapping table of the total forwarding delay of the relay node-relay node forwarding efficiency is obtained from the database, and the matching optimization scheme of the relay node forwarding efficiency is found according to the total forwarding delay of the relay node by searching the mapping table. The interference signal of the medium voltage carrier communication channel is obtained by analyzing the interference characteristics of the medium voltage carrier communication channel in the high penetration power grid.

2. The method for optimizing the medium voltage carrier communication in a high penetration power grid according to claim 1, characterized in that: The interference signal of the medium voltage carrier communication channel is obtained by analyzing the interference characteristics of the medium voltage carrier communication channel in the high penetration power grid. The interference signal of the medium voltage carrier communication channel is obtained by analyzing the interference characteristics of the medium voltage carrier communication channel in the high penetration power grid. ​ 3. The method of claim 2, wherein: ​ ； wherein is the mid-pressure carrier communication channel interference signal, is the electromagnetic pulse peak power, is the harmonic mean frequency, is the sunspot number, is the set is the compensation factor for, is the set is the compensation factor for, is the set is the compensation factor for, e is the natural constant.

4. The method of claim 1, wherein: The medium voltage carrier communication channel characteristics in the high penetration power grid are analyzed, the medium voltage carrier communication channel interference signal and the medium voltage carrier communication channel fading factor are combined, and the medium voltage carrier communication channel quality is determined, and the specific analysis process is as follows: The signal-to-noise ratio of the medium voltage carrier communication channel in the high penetration power grid is calculated: ； In the formula, SNR is the signal-to-noise ratio of a medium-voltage carrier communication channel in a high-permeability power grid, is a signal power dynamic adjustment factor stored in the database, is a channel multipath fading factor, is a noise power spectral density; The bit error rate of the medium voltage carrier communication channel in the high penetration power grid is calculated: ； In the formula, BER is the bit error rate of the middle voltage carrier communication channel in the high permeability power grid, is the number of transmission errors, is the total number of codes transmitted; Based on the signal-to-noise ratio of the medium voltage carrier communication channel in the high penetration power grid, the bit error rate of the medium voltage carrier communication channel in the high penetration power grid, the medium voltage carrier communication channel interference signal and the medium voltage carrier communication channel fading factor, the medium voltage carrier communication channel characteristics are comprehensively analyzed, and the medium voltage carrier communication channel characteristics are used as the analysis basis for determining the quality of the medium voltage carrier communication channel. The medium voltage carrier communication channel characteristics are calculated, and the specific formula is as follows: ； wherein is a mid-pressure carrier communication channel characteristic, is a mid-pressure carrier communication channel fading factor, is a mid-pressure carrier communication channel interference signal, is a compensation factor for a set SNR, is a compensation factor for a set BER, is a compensation factor for a set , and is a compensation factor for a set . The pre-stored medium voltage carrier communication channel characteristic-medium voltage carrier communication channel quality mapping table in the database is obtained, and by looking up the mapping table, the matching medium voltage carrier communication channel quality is found according to the medium voltage carrier communication channel characteristics.

5. The method of claim 1, wherein: The medium voltage carrier communication transmission requirement is obtained, and the specific analysis process is as follows: Acquiring medium voltage carrier communication transmission distance ; Acquiring a medium voltage carrier communication channel target transmission rate ; The medium voltage carrier communication transmission distance and the medium voltage carrier communication channel target transmission rate are recorded as the medium voltage carrier communication transmission requirement.

6. The method of claim 5, wherein: The medium voltage carrier communication channel quality is combined to determine the relay node optimization deployment scheme and select the optimized frequency interval of the medium voltage carrier communication channel in the high penetration power grid, and the specific analysis process is as follows: The medium voltage carrier communication transmission distance, the medium voltage carrier communication channel target transmission rate and the medium voltage carrier communication channel quality are stored as a specified label, a pre-stored specified label-relay node optimization deployment scheme mapping table in the database is obtained, and by looking up the mapping table, the matching relay node optimization deployment scheme is found according to the specified label. The frequency interval selection index of the medium voltage carrier communication channel in the high penetration power grid is calculated: ； In the formula, is an index for selecting a frequency interval of a medium-voltage carrier communication channel in a high-permeability power grid, is an average signal-to-noise ratio in the interval is an index for selecting a frequency interval of a medium-voltage carrier communication channel in a high-permeability power grid, is an average signal-to-noise ratio in the interval is an available channel bandwidth in the interval is an available channel bandwidth in the interval is a weight factor set for is a weight factor set for is a weight factor set for is a weight factor set for The frequency interval corresponding to the maximum value in the selection index of each frequency interval of the medium-voltage carrier communication channel in the high-permeability power grid is the optimized frequency interval of the medium-voltage carrier communication channel in the high-permeability power grid, The frequency minimum value of the interval The frequency maximum value of the interval The frequency maximum value of the interval ​ 7. A system for optimizing medium voltage carrier communication in a high penetration power grid, applied to the method for optimizing medium voltage carrier communication in a high penetration power grid according to any one of claims 1-6, characterized in that, The channel fading factor analysis module, the channel interference signal analysis module, the communication channel quality determination module, the relay node optimization deployment module and the forwarding efficiency optimization scheme determination module are included, wherein: The channel fading factor analysis module is used to construct a medium voltage carrier communication channel transmission model in the high penetration power grid, analyze the channel multipath fading factor and the channel shadow fading factor, and obtain the medium voltage carrier communication channel fading factor based on the channel multipath fading factor and the channel shadow fading factor; The channel interference signal analysis module is used to analyze the medium voltage carrier communication channel interference characteristics in the high penetration power grid, and obtain the medium voltage carrier communication channel interference signal; The communication channel quality determination module is used to analyze the medium voltage carrier communication channel characteristics in the high penetration power grid, combine the medium voltage carrier communication channel interference signal and the medium voltage carrier communication channel fading factor, and determine the medium voltage carrier communication channel quality; The relay node optimization deployment module is used to obtain the medium voltage carrier communication transmission requirement, combine the medium voltage carrier communication channel quality, determine the relay node optimization deployment scheme and select the optimized frequency interval of the medium voltage carrier communication channel in the high penetration power grid; The forwarding efficiency optimization scheme determination module is configured to construct a relay node forwarding delay model of the completed optimization deployment, determine whether the relay node forwarding efficiency is qualified, and determine an optimization scheme for the unqualified relay node forwarding efficiency. The channel transmission model of the medium voltage carrier communication channel in the high-permeability power grid is constructed, and the channel multipath fading factor and the channel shadow fading factor are obtained through analysis, and the specific analysis process is as follows: The channel transmission model of the medium voltage carrier communication channel in the high-permeability power grid is constructed: ； wherein is a channel multipath fading factor, is an attenuation coefficient of the kth channel transmission path, is a circular constant, is a carrier frequency, is a transmission delay of the kth channel transmission path, j is an imaginary unit, e is a natural constant, k is a channel transmission path number, k = 1, 2, 3,..., N, and N is a total number of channel transmission paths. The channel shadow fading factor is calculated: ； wherein is a channel shadow fading factor, is a shadow fading standard deviation stored in a database, is a random number subject to a standard normal distribution; The medium voltage carrier communication channel fading factor is obtained based on the channel multipath fading factor and the channel shadow fading factor, and the specific analysis process is as follows: ； In the formula, is a mid-pressure carrier communication channel fading factor; The channel transmission model of the medium voltage carrier communication channel in the high-permeability power grid is constructed, and the channel multipath fading factor and the channel shadow fading factor are obtained through analysis, and the specific analysis process is as follows: The channel transmission model of the medium voltage carrier communication channel in the high-permeability power grid is constructed: ； wherein is the total forwarding delay of the relay node, is the processing delay of the relay node, is the allowed processing delay of the relay node stored in the database, is the transmission delay of the relay node, is the allowed transmission delay of the relay node stored in the database, is the queuing delay of the relay node, is the allowed queuing delay of the relay node stored in the database, is the set compensation factor, is the set compensation factor, is the set compensation factor; The total forwarding delay of the relay node is compared with the total forwarding limit delay of the relay node stored in the database; If the total forwarding delay of the relay node is lower than the total forwarding limit delay of the relay node, the relay node forwarding efficiency corresponding to the total forwarding delay of the relay node is qualified; If the total forwarding delay of the relay node is not lower than the total forwarding limit delay of the relay node, the relay node forwarding efficiency corresponding to the total forwarding delay of the relay node is unqualified, an optimization scheme mapping table of the total forwarding delay of the relay node-relay node forwarding efficiency of the relay node is obtained from the database, and the matching optimization scheme of the relay node forwarding efficiency is found according to the total forwarding delay of the relay node by searching the mapping table.

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