Optical power intranet firewall system and protection method
Through the optical power intranet firewall system, combined with data encryption, behavior analysis and traffic analysis modules, the encryption level and access level are dynamically adjusted, solving the problem of low security of optical power signal data in photovoltaic power stations and achieving efficient encryption and security control.
Patent Information
- Application Number
- CN202510898659.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2025-10-21
AI Technical Summary
The security of optical power signal data in existing photovoltaic power stations is low, the encryption efficiency is poor, and it cannot meet the growing security needs.
The data encryption module, behavior analysis module and traffic analysis module are used to dynamically adjust the encryption level and access level by analyzing the optical power signal data, user access behavior and traffic data of the photovoltaic power station, thereby realizing hierarchical encryption and access control of the optical power signal data.
The encryption efficiency of optical power data is improved, the security of photovoltaic data transmission is enhanced, and the security requirements of photovoltaic power stations are met.
Smart Images
Figure CN120825311A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of photovoltaic power station data security, and more specifically, to an optical power intranet firewall system and protection method. Background Art
[0002] With the rapid development of photovoltaic power generation, the role of power data from photovoltaic power plants in the power system is becoming increasingly prominent. The accurate transmission of optical power data from photovoltaic power plants not only accurately reflects the real-time performance of photovoltaic modules, but also serves as an important basis for evaluating the overall operation of the power plant, thereby ensuring the stable operation of the power system.
[0003] In existing photovoltaic power plants, the security protection of photovoltaic data is generally limited to protecting optical power signal data through a firewall whitelist. The rules are not flexible enough, the security is low, the encryption efficiency is poor, and the optical power signal data is vulnerable to security threats, which cannot meet the growing security needs of photovoltaic power plants. Summary of the Invention
[0004] The present invention provides an optical power intranet firewall system and protection method, which are used to solve the problems of low security and poor encryption efficiency of optical power signal data protection in the prior art, including: A data encryption module is used to obtain optical power signal data of the photovoltaic power station, determine an encryption level according to the optical power signal data of the photovoltaic power station, and encrypt the optical power signal data according to the encryption level; Behavior analysis module, used to receive user access requests, obtain user access behavior data, and determine user access security level based on the user access behavior data; The traffic analysis module is used to obtain the user's access traffic data, adjust the user's access security level according to the user's access traffic data, obtain a dynamic access security level, and determine whether the user is allowed to access the encrypted optical power signal data based on the user's dynamic access security level.
[0005] Furthermore, the data encryption module determines the encryption level according to the optical power signal data of the photovoltaic power station, including: A power variation curve of the photovoltaic power station is drawn based on the optical power signal data of the photovoltaic power station, and a power fluctuation value is determined based on the power variation curve of the photovoltaic power station to obtain a first importance index; Obtain a historical power change curve of the photovoltaic power station, determine the power demand value based on the historical power change curve and the current power change curve, and obtain the second importance index; The comprehensive importance of the optical power signal data is determined according to the first importance index and the second importance index, and the encryption level of the optical power signal data is determined according to the comprehensive importance.
[0006] Furthermore, determining the power fluctuation value according to the power variation curve of the photovoltaic power station includes: Obtain a preset sliding time window, and segment the power change curve according to the preset sliding time window to obtain a plurality of sub-power change curves; Calculating the average value of each sub-power change curve, and establishing an average value change curve according to the average value of each sub-power change curve; Calculating the absolute value of the slope of each adjacent average value in the average value change curve, and screening out the absolute value of the slope that is greater than a first preset threshold; The number of absolute values of the slopes greater than a first preset threshold is counted to obtain a power fluctuation value of the photovoltaic power station.
[0007] Furthermore, determining the power demand value according to the historical power change curve and the current power change curve includes: Obtain the preset standard power range of the photovoltaic power station, calculate the duration of each historical power change curve within the preset power demand range, and obtain the power utilization parameter; Filter out historical power change curves with power values less than the lower limit of the preset power demand interval, calculate the difference between the lower limit of the preset power demand interval and the historical power change curves, filter out the maximum difference, and obtain the power deviation parameter; Clustering each historical power change curve according to the power utilization parameter and the power deviation parameter to obtain cluster partitions of each historical power change curve, and setting corresponding standard power demand values according to the cluster partitions of each historical power change curve; Calculate the correlation coefficient between the current power change curve and each historical power change curve, count the historical power change curve with the largest correlation coefficient with the current power change curve, and obtain the corresponding standard power demand value; The demand weight value is determined according to the maximum correlation coefficient, and the demand weight value of the current power change curve is multiplied by the standard power demand value to obtain the power demand value of the photovoltaic power station.
[0008] Furthermore, determining the encryption level of the optical power signal data according to the comprehensive importance includes: Obtain the importance of the preset standard and calculate the difference between the comprehensive importance and the importance of the preset standard; Determining whether a difference between the comprehensive importance level and the preset standard importance level is greater than a second preset threshold, and if the difference between the comprehensive importance level and the preset standard importance level is greater than the second preset threshold, setting the first level as the encryption level of the optical power signal data; If the difference between the comprehensive importance and the preset standard importance is less than or equal to the second preset threshold, then determining whether the difference between the comprehensive importance and the preset standard importance is greater than a third preset threshold; If the difference between the comprehensive importance level and the preset standard importance level is greater than a third preset threshold, the second level is set as the encryption level of the optical power signal data; If the difference between the comprehensive importance level and the preset standard importance level is less than or equal to a third preset threshold, the third level is set as the encryption level of the optical power signal data.
[0009] Furthermore, the behavior analysis module determines the user access security level based on the user's access behavior data, including: Obtain historical access data of the intranet firewall, and determine historical user access behavior characteristics and corresponding access security levels based on the historical access data of the intranet firewall; Establish a training sample set based on historical user access behavior characteristics and corresponding access security levels, establish an access security level assessment model based on the training sample set, and train the access security level assessment model to obtain a trained access security level assessment model; The corresponding access behavior features are extracted according to the user access behavior data, and the access behavior features of the current user are input into the trained access security level assessment model to obtain the user access security level.
[0010] Furthermore, the traffic analysis module adjusts the user access security level according to the user's access traffic data to obtain a dynamic access security level, including: Obtain a preset time period, and segment the user's traffic data according to the preset time period to obtain a number of traffic data segments; Obtaining a preset standard data segment, and calculating the degree of difference between the preset standard data segment and each flow data segment; The user access level is adjusted according to the average value of the characteristic difference degree of each traffic data segment to obtain the user's dynamic access level.
[0011] Furthermore, the user access security level is adjusted according to the average value of the characteristic difference degree of each traffic data segment, including: The user's access level is adjusted according to the access level adjustment formula. The access level adjustment formula is specifically:
[0012] in, For the adjusted user access level, This is the user access level before adjustment. To preset the allowable difference, is the average value of the characteristic difference degree, is the preset range coefficient, is the rounding function, is the natural exponential function.
[0013] Furthermore, the traffic analysis module determines whether to allow the user to access the encrypted optical power signal data according to the user's dynamic access security level, including: Determine whether the user's dynamic access security level matches the encryption level of the optical power signal data. If the user's access security level matches the encryption level of the optical power signal data, allow the user's access request. If the user access security level does not match the encryption level of the optical power signal data, the user's access request will be denied.
[0014] In order to achieve the above object, the present invention also provides an optical power intranet firewall protection method, the method comprising: Obtaining optical power signal data of the photovoltaic power station, determining an encryption level based on the optical power signal data of the photovoltaic power station, and encrypting the optical power signal data based on the encryption level; Receive user access requests, obtain user access behavior data, and determine user access security levels based on the user access behavior data; The user's access traffic data is obtained, the user's access security level is adjusted according to the user's access traffic data to obtain a dynamic access security level, and whether the user is allowed to access the encrypted optical power signal data is determined according to the user's dynamic access security level.
[0015] The beneficial effects of the present invention are: By applying the above technical solution, the present invention performs hierarchical encryption on optical power signal data according to the data characteristics of the optical power signal data, which can effectively improve the encryption efficiency of the optical power data. By analyzing and monitoring the user's access behavior and traffic, it takes into account the security of photovoltaic data transmission and meets the growing security needs of photovoltaic power stations. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 A schematic diagram showing the structure of an optical power intranet firewall system proposed in an embodiment of the present invention is shown; Figure 2 The figure shows an overall flow chart of an optical power intranet firewall protection method proposed in an embodiment of the present invention. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0019] The embodiment of the present application provides an optical power intranet firewall system, such as Figure 1 As shown, it includes: a data encryption module, which is used to obtain the optical power signal data of the photovoltaic power station, determine the encryption level according to the optical power signal data of the photovoltaic power station, and encrypt the optical power signal data according to the encryption level; a behavior analysis module, which is used to receive the user's access request, obtain the user's access behavior data, and determine the user's access level according to the user's access behavior data; a traffic analysis module, which is used to obtain the user's access traffic data, adjust the user's access level according to the user's access traffic data, obtain a dynamic access level, and determine whether the user is allowed to access the encrypted optical power signal data according to the user's dynamic access level.
[0020] In this embodiment, an intranet firewall is established to encrypt and protect the optical power signal data. The higher the encryption level of the optical power signal data, the greater its importance and the more corresponding encryption rounds. The user's access level is dynamically adjusted by analyzing and monitoring the user's access behavior and traffic data. The dynamic access level is matched with the encryption level of the optical power signal data to determine whether the user is allowed to access the optical power signal data.
[0021] In some embodiments of the present application, the data encryption module determines the encryption level based on the optical power signal data of the photovoltaic power station, including: drawing the power change curve of the photovoltaic power station based on the optical power signal data of the photovoltaic power station, determining the power fluctuation value based on the power change curve of the photovoltaic power station, and obtaining a first importance index; obtaining the historical power change curve of the photovoltaic power station, determining the power demand value based on the historical power change curve and the current power change curve, and obtaining a second importance index; determining the comprehensive importance of the optical power signal data based on the first importance index and the second importance index, and determining the encryption level of the optical power signal data based on the comprehensive importance.
[0022] In this embodiment, the comprehensive importance of the optical power signal data is calculated in combination with the power fluctuation value of the optical power signal data and the power demand value of the photovoltaic power station, so as to determine the encryption level of the optical power signal data, and the optimal encryption level is assigned to the optical power signal data according to the comprehensive importance to improve encryption efficiency.
[0023] In some embodiments of the present application, the power fluctuation value is determined based on the power change curve of the photovoltaic power station, including: obtaining a preset sliding time window, dividing the power change curve according to the preset sliding time window to obtain several sub-power change curves; calculating the average value of each sub-power change curve, and establishing an average value change curve based on the average value of each sub-power change curve; calculating the absolute value of the slope of each adjacent average value in the average value change curve, and screening out the absolute value of the slope greater than a first preset threshold; counting the number of absolute values of the slope greater than the first preset threshold to obtain the power fluctuation value of the photovoltaic power station.
[0024] In this embodiment, the power fluctuation value of the photovoltaic power station is calculated by the absolute value of the slope of the power variation curve, thereby obtaining the first importance index.
[0025] In some embodiments of the present application, determining the power demand value based on the historical power change curve and the current power change curve includes: obtaining a preset standard power interval of the photovoltaic power station, calculating the duration of each historical power change curve within the preset power demand interval, and obtaining a power utilization parameter; screening out historical power change curves with power values less than the lower limit of the preset power demand interval, counting the difference between the lower limit of the preset power demand interval and the historical power change curve, screening out the maximum difference, and obtaining a power deviation parameter; clustering each historical power change curve according to the power utilization parameter and the power deviation parameter to obtain a cluster partition of each historical power change curve, and setting a corresponding standard power demand value according to the cluster partition of each historical power change curve; calculating the correlation coefficient between the current power change curve and each historical power change curve, counting the historical power change curve with the largest correlation coefficient with the current power change curve, and obtaining the corresponding standard power demand value; determining a demand weight value according to the maximum correlation coefficient, multiplying the demand weight value of the current power change curve by the standard power demand value, and obtaining the power demand value of the photovoltaic power station.
[0026] In this embodiment, the historical power change curve is specifically the power change curve of the photovoltaic power station in a historical power generation cycle. Several historical power change curves are clustered through the power utilization parameters and power deviation parameters of the photovoltaic power station to obtain the standard power demand value corresponding to each historical power change curve. The historical power change curve with the largest correlation coefficient with the current power change curve is screened out to obtain the standard power demand value corresponding to the current power change curve. The maximum correlation coefficient is normalized and its range is set to [0, 2] to calculate the power demand value of the photovoltaic power station.
[0027] In some embodiments of the present application, the encryption level of the optical power signal data is determined based on the comprehensive importance, including: obtaining a preset standard importance, calculating the difference between the comprehensive importance and the preset standard importance; judging whether the difference between the comprehensive importance and the preset standard importance is greater than a second preset threshold; if the difference between the comprehensive importance and the preset standard importance is greater than the second preset threshold, setting the first level as the encryption level of the optical power signal data; if the difference between the comprehensive importance and the preset standard importance is less than or equal to the second preset threshold, judging whether the difference between the comprehensive importance and the preset standard importance is greater than a third preset threshold; if the difference between the comprehensive importance and the preset standard importance is greater than the third preset threshold, setting the second level as the encryption level of the optical power signal data; if the difference between the comprehensive importance and the preset standard importance is less than or equal to the third preset threshold, setting the third level as the encryption level of the optical power signal data.
[0028] In this embodiment, the second preset threshold is greater than the third preset threshold, and the encryption level of the optical power signal is set by the difference between the comprehensive importance and the preset standard importance. The larger the difference, the higher the corresponding encryption level.
[0029] In some embodiments of the present application, the behavior analysis module determines the user access level based on the user's access behavior data, including: obtaining historical access data of the intranet firewall, determining historical user access behavior characteristics and corresponding access levels based on the historical access data of the intranet firewall; establishing a training sample set based on the historical user access behavior characteristics and the corresponding access levels, establishing an access level evaluation model based on the training sample set and training the access level evaluation model to obtain a trained access level evaluation model; extracting corresponding access behavior characteristics based on the user access behavior data, inputting the current user's access behavior characteristics into the trained access level evaluation model to obtain the user access level.
[0030] In this embodiment, the user access behavior characteristics are determined by the access time characteristics and user operation characteristics during the access process. A deep learning neural network model is established and trained through the historical user access behavior characteristics and the corresponding access levels. The user access behavior characteristics are used as input values and the user access level is used as output values to obtain the user access level of the current user.
[0031] In some embodiments of the present application, the traffic analysis module adjusts the user access level according to the user's access traffic data to obtain a dynamic access level, including: obtaining a preset time period, dividing the user's traffic data according to the preset time period to obtain a number of traffic data segments; obtaining a preset standard data segment, calculating the degree of characteristic difference between the preset standard data segment and each traffic data segment; adjusting the user access level according to the average value of the characteristic difference degree of each traffic data segment to obtain the user's dynamic access level.
[0032] In some embodiments of the present application, adjusting the user access level according to the average value of the characteristic difference degree of each traffic data segment includes: adjusting the user access level according to an access level adjustment formula, wherein the access level adjustment formula is specifically:
[0033] in, For the adjusted user access level, This is the user access level before adjustment. To preset the allowable difference, is the average value of the characteristic difference degree, is the preset range coefficient, is the rounding function, is the natural exponential function.
[0034] In this embodiment, by extracting the traffic characteristics of the preset standard data segment and each traffic data segment, the degree of difference between the characteristics is calculated, and the user access security level is dynamically adjusted according to the average value of the degree of difference between the characteristics of each traffic data segment.
[0035] In some embodiments of the present application, the traffic analysis module determines whether the user is allowed to access the encrypted optical power signal data based on the user's dynamic access level, including: determining whether the user's dynamic access level matches the encryption level of the optical power signal data; if the user's access level matches the encryption level of the optical power signal data, the user's access request is allowed; if the user's access level does not match the encryption level of the optical power signal data, the user's access request is rejected.
[0036] Based on the same technical concept, such as Figure 2 As shown, the present invention also provides an optical power intranet firewall protection method, the method comprising: S101, obtaining optical power signal data of a photovoltaic power station, determining an encryption level according to the optical power signal data of the photovoltaic power station, and encrypting the optical power signal data according to the encryption level; S102, receiving a user's access request, obtaining the user's access behavior data, and determining the user's access level based on the user's access behavior data; S103, obtaining the user's access traffic data, adjusting the user's access security level according to the user's access traffic data to obtain a dynamic access security level, and determining whether to allow the user to access the encrypted optical power signal data according to the user's dynamic access security level.
[0037] By applying the above technical solution, the present invention includes a data encryption module for obtaining optical power signal data from a photovoltaic power station, determining an encryption level based on the optical power signal data from the photovoltaic power station, and encrypting the optical power signal data according to the encryption level; a behavior analysis module for receiving user access requests, obtaining user access behavior data, and determining the user access security level based on the user access behavior data; and a traffic analysis module for obtaining user access traffic data, adjusting the user access security level based on the user access traffic data to obtain a dynamic access security level, and determining whether to allow the user to access the encrypted optical power signal data based on the user's dynamic access security level. The present invention can effectively improve the encryption efficiency of optical power data while also taking into account the security of photovoltaic data transmission.
[0038] Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention can be implemented via hardware or via software combined with a necessary general-purpose hardware platform. Based on this understanding, the technical solution of the present invention can be embodied in the form of a software product. This software product can be stored on a non-volatile storage medium (such as a CD-ROM, USB flash drive, or external hard drive) and includes instructions for enabling a computer device (such as a personal computer, server, or network device) to execute the methods described in various implementation scenarios of the present invention.
[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. An optical power intranet firewall system, characterized in that: include: A data encryption module is used to obtain optical power signal data of the photovoltaic power station, determine an encryption level according to the optical power signal data of the photovoltaic power station, and encrypt the optical power signal data according to the encryption level; Behavior analysis module, used to receive user access requests, obtain user access behavior data, and determine user access security level based on the user access behavior data; The traffic analysis module is used to obtain the user's access traffic data, adjust the user's access security level according to the user's access traffic data, obtain a dynamic access security level, and determine whether the user is allowed to access the encrypted optical power signal data based on the user's dynamic access security level.
2. The optical power intranet firewall system according to claim 1, characterized in that: The data encryption module determines the encryption level according to the optical power signal data of the photovoltaic power station, including: A power variation curve of the photovoltaic power station is drawn based on the optical power signal data of the photovoltaic power station, and a power fluctuation value is determined based on the power variation curve of the photovoltaic power station to obtain a first importance index; Obtain a historical power change curve of the photovoltaic power station, determine the power demand value based on the historical power change curve and the current power change curve, and obtain the second importance index; The comprehensive importance of the optical power signal data is determined according to the first importance index and the second importance index, and the encryption level of the optical power signal data is determined according to the comprehensive importance.
3. The optical power intranet firewall system according to claim 2, characterized in that: Determining the power fluctuation value according to the power variation curve of the photovoltaic power station includes: Obtain a preset sliding time window, and segment the power change curve according to the preset sliding time window to obtain a plurality of sub-power change curves; Calculating the average value of each sub-power change curve, and establishing an average value change curve according to the average value of each sub-power change curve; Calculating the absolute value of the slope of each adjacent average value in the average value change curve, and screening out the absolute value of the slope that is greater than a first preset threshold; The number of absolute values of the slopes greater than a first preset threshold is counted to obtain a power fluctuation value of the photovoltaic power station.
4. The optical power intranet firewall system according to claim 2, characterized in that: Determining the power demand value according to the historical power change curve and the current power change curve includes: Obtain the preset standard power range of the photovoltaic power station, calculate the duration of each historical power change curve within the preset power demand range, and obtain the power utilization parameter; Filter out historical power change curves with power values less than the lower limit of the preset power demand interval, calculate the difference between the lower limit of the preset power demand interval and the historical power change curves, filter out the maximum difference, and obtain the power deviation parameter; Clustering each historical power change curve according to the power utilization parameter and the power deviation parameter to obtain cluster partitions of each historical power change curve, and setting corresponding standard power demand values according to the cluster partitions of each historical power change curve; Calculate the correlation coefficient between the current power change curve and each historical power change curve, count the historical power change curve with the largest correlation coefficient with the current power change curve, and obtain the corresponding standard power demand value; The demand weight value is determined according to the maximum correlation coefficient, and the demand weight value of the current power change curve is multiplied by the standard power demand value to obtain the power demand value of the photovoltaic power station.
5. The optical power intranet firewall system according to claim 2, characterized in that: Determining the encryption level of the optical power signal data according to the comprehensive importance includes: Obtain the importance of the preset standard and calculate the difference between the comprehensive importance and the importance of the preset standard; Determining whether a difference between the comprehensive importance level and the preset standard importance level is greater than a second preset threshold, and if the difference between the comprehensive importance level and the preset standard importance level is greater than the second preset threshold, setting the first level as the encryption level of the optical power signal data; If the difference between the comprehensive importance and the preset standard importance is less than or equal to the second preset threshold, then determining whether the difference between the comprehensive importance and the preset standard importance is greater than a third preset threshold; If the difference between the comprehensive importance level and the preset standard importance level is greater than a third preset threshold, the second level is set as the encryption level of the optical power signal data; If the difference between the comprehensive importance level and the preset standard importance level is less than or equal to a third preset threshold, the third level is set as the encryption level of the optical power signal data.
6. The optical power intranet firewall system according to claim 1, characterized in that: The behavior analysis module determines the user access security level based on the user's access behavior data, including: Obtain historical access data of the intranet firewall, and determine historical user access behavior characteristics and corresponding access security levels based on the historical access data of the intranet firewall; Establish a training sample set based on historical user access behavior characteristics and corresponding access security levels, establish an access security level assessment model based on the training sample set, and train the access security level assessment model to obtain a trained access security level assessment model; The corresponding access behavior features are extracted according to the user access behavior data, and the access behavior features of the current user are input into the trained access security level assessment model to obtain the user access security level.
7. The optical power intranet firewall system according to claim 1, characterized in that: The traffic analysis module adjusts the user access security level according to the user's access traffic data to obtain a dynamic access security level, including: Obtain a preset time period, and segment the user's traffic data according to the preset time period to obtain a number of traffic data segments; Obtaining a preset standard data segment, and calculating the degree of difference between the preset standard data segment and each flow data segment; The user access level is adjusted according to the average value of the characteristic difference degree of each traffic data segment to obtain the user's dynamic access level.
8. The optical power intranet firewall system according to claim 7, characterized in that: The adjusting of the user access security level according to the average value of the characteristic difference degree of each traffic data segment includes: The user's access level is adjusted according to the access level adjustment formula. The access level adjustment formula is specifically: in, For the adjusted user access level, This is the user access level before adjustment. To preset the allowable difference, is the average value of the characteristic difference degree, is the preset range coefficient, is the rounding function, is the natural exponential function.
9. The optical power intranet firewall system according to claim 1, characterized in that: The traffic analysis module determines whether to allow the user to access the encrypted optical power signal data according to the user's dynamic access security level, including: Determine whether the user's dynamic access security level matches the encryption level of the optical power signal data. If the user's access security level matches the encryption level of the optical power signal data, allow the user's access request. If the user access security level does not match the encryption level of the optical power signal data, the user's access request will be denied.
10. An optical power intranet firewall protection method, characterized in that: The method comprises: Obtaining optical power signal data of the photovoltaic power station, determining an encryption level based on the optical power signal data of the photovoltaic power station, and encrypting the optical power signal data based on the encryption level; Receive user access requests, obtain user access behavior data, and determine user access security levels based on the user access behavior data; The user's access traffic data is obtained, the user's access security level is adjusted according to the user's access traffic data to obtain a dynamic access security level, and whether the user is allowed to access the encrypted optical power signal data is determined according to the user's dynamic access security level.