Power distribution room intelligent operation and maintenance information system based on quantum encryption

Abstract

The invention relates to the technical field of data processing, in particular to a power distribution room intelligent operation and maintenance information system based on quantum encryption, and the system comprises the steps: according to the correlation degree between each preset data type and the power distribution room intelligent operation and maintenance information system, the transmission abnormal condition of each data type in historical transmission data, and the data amplitude change degree of each data type; determining the attention degree of each data type in the intelligent operation and maintenance information system of the power distribution room; determining the type of data to be sent according to the bandwidth load condition of the intelligent operation and maintenance information system of the power distribution room and the bandwidth occupation condition of each data type; sorting the to-be-sent data types according to the attention to obtain priorities corresponding to the to-be-sent data types; and determining a target key updating rate of the to-be-sent data type according to the priority and a preset initial key updating rate, so that the intelligent operation and maintenance information system of the power distribution room updates the quantum key according to the target key updating rate. According to the invention, the technical problem of fixed key updating frequency is effectively solved.

Description

Technical Field

[0001] The present invention relates to the field of data processing technology, and in particular to a power distribution room intelligent operation and maintenance information system based on quantum encryption. Background Art

[0002] With the rapid development of the power industry and the deepening of intelligent transformation, the intelligent level of operation and maintenance management of the distribution room, as a key component of the power system, directly affects the stability and safety of the entire power system. The traditional operation and maintenance management method of the distribution room has many shortcomings, such as low efficiency of manual inspection, untimely fault detection, and difficulty in ensuring data security. Therefore, it is particularly important to develop an efficient, intelligent and safe distribution room operation and maintenance management system.

[0003] When using quantum encryption to encrypt the power distribution room operation and maintenance information equipment, the key generation speed will affect the security of quantum encryption. In the traditional quantum encryption process, a specific key generation speed is generally selected, such as 1Mbps or 5Mbps. However, this kind of key update at a fixed time frequency makes it easy for attackers to predict the time of the next key update by analyzing historical data, reducing the security of the intelligent operation and maintenance information system of the power distribution room. Summary of the invention

[0004] In order to solve the technical problem that the key update frequency is fixed, resulting in low security of the intelligent operation and maintenance information system of the power distribution room, the purpose of the present invention is to provide a distribution room intelligent operation and maintenance information system based on quantum encryption, and the technical solution adopted is as follows: An analysis module is used to determine the attention of each data type in the intelligent operation and maintenance information system of the power distribution room according to the correlation between each preset data type and the intelligent operation and maintenance information system of the power distribution room, the transmission anomaly of each data type in the historical transmission data, and the degree of change of the data amplitude of each data type in the historical transmission data; The screening module is used to determine the data type to be sent according to the bandwidth load of the intelligent operation and maintenance information system of the power distribution room and the bandwidth occupancy of each data type; The priority determination module is used to sort the data types to be sent according to the attention of each data type in the intelligent operation and maintenance information system of the power distribution room, and obtain the priority corresponding to the data type to be sent; The key update rate determination module is used to determine the target key update rate of the data type to be sent according to the priority corresponding to the data type to be sent and the preset initial key update rate, so that the intelligent operation and maintenance information system of the distribution room can update the quantum key for transmitting the data type to be sent according to the target key update rate.

[0005] Preferably, the method for determining the correlation between each preset data type and the intelligent operation and maintenance information system of the power distribution room includes: Extract the risk parameter corresponding to the x-th data type; A first operation result is obtained by summing the risk parameters corresponding to the x-th data type, and the first operation result is calculated according to a preset first weight coefficient to obtain a correlation between the x-th data type and the intelligent operation and maintenance information system of the power distribution room.

[0006] Preferably, the method for determining the transmission abnormality of each data type in the historical transmission data includes: Determine the sending ratio of the sending data volume of the x-th data type to the sending data volume of each data type in the historical transmission data; Determine a transmission anomaly coefficient of the xth data type according to the amount of data sent of the xth data type and the amount of data received of the xth data type; The transmission abnormality of the x-th data type is determined according to the sending ratio and the transmission abnormality coefficient of the x-th data type.

[0007] Preferably, the method for determining the degree of change of the data amplitude of each data type in the historical transmission data includes: Determine the range of the sent data value of the xth data type according to the maximum sent data value corresponding to the xth data type and the minimum sent data value corresponding to the xth data type; Performing a sum operation on the differences between adjacent transmission data corresponding to the x-th data type to obtain a second operation result, and calculating a ratio of the second operation result to the amount of transmission data of the x-th data type to obtain an amplitude variation coefficient of the x-th data type; The degree of change in the data amplitude of the x-th data type is determined based on the range of the transmitted data value of the x-th data type and the amplitude change coefficient of the x-th data type.

[0008] Preferably, the method for generating historical transmission data includes: Determine the order of correlation according to the correlation between each preset data type and the intelligent operation and maintenance information system of the power distribution room; The required data is transmitted in the order of relevance to generate historical transmission data.

[0009] Preferably, the attention of each data type in the intelligent operation and maintenance information system of the power distribution room is determined according to the correlation between each preset data type and the intelligent operation and maintenance information system of the power distribution room, the transmission abnormality of each data type in the historical transmission data, and the degree of change of the data amplitude of each data type in the historical transmission data, including: Calculate the data amplitude change degree of the x-th data type according to the preset second weight coefficient to obtain the target data amplitude change degree of the x-th data type; Calculate the correlation between the x-th data type and the intelligent operation and maintenance information system of the power distribution room according to the preset third weight coefficient to obtain the target correlation of the x-th data type; Calculating the transmission abnormality of the x-th data type according to a preset fourth weight coefficient to obtain a target transmission abnormality of the x-th data type; The target data amplitude change degree of the x-th data type, the target correlation degree of the x-th data type and the target transmission abnormality of the x-th data type are summed to obtain the attention degree of the x-th data type in the intelligent operation and maintenance information system of the distribution room.

[0010] Preferably, after determining the attention of each data type in the intelligent operation and maintenance information system of the power distribution room, the method further includes: The preset sudden event dynamic correction table is used to correct the attention level of each data type in the intelligent operation and maintenance information system of the power distribution room, and the corrected attention level of each data type in the intelligent operation and maintenance information system of the power distribution room is obtained.

[0011] Preferably, the method for determining the bandwidth occupancy of each data type includes: Determine the bandwidth occupancy factor based on the additional bandwidth occupied by quantum key distribution and the protocol encapsulation overhead; The bandwidth occupancy of the x-th data type is determined according to the bandwidth occupancy coefficient and the original bandwidth of the x-th data type.

[0012] Preferably, determining the target key update rate of the data type to be sent according to the priority of the data type to be sent and a preset initial key update rate includes: Determine the level of the last priority among the priorities corresponding to the data types to be sent; Determine the rate update coefficient according to the priority of the x-th data type and the level of the last priority; The target key update rate of the data type to be sent is determined according to the preset initial key update rate and the rate update coefficient.

[0013] Preferably, the method for determining the quantum key includes: When the measurement basis vector of the quantum bit received by the receiver is the same as the quantum bit sent by the sender of the intelligent operation and maintenance information system of the power distribution room, a quantum key is generated based on the quantum bits with the same measurement basis vector.

[0014] The present invention has the following beneficial effects: According to the preset correlation between each data type and the intelligent operation and maintenance information system of the distribution room, the transmission anomalies of each data type in the historical transmission data, and the degree of change in the data amplitude of each data type in the historical transmission data, the attention of each data type in the intelligent operation and maintenance information system of the distribution room is determined; according to the bandwidth load of the intelligent operation and maintenance information system of the distribution room and the bandwidth occupancy of each data type, the data type to be sent is determined; according to the attention of each data type in the intelligent operation and maintenance information system of the distribution room, the data type to be sent is sorted to obtain the corresponding priority of the data type to be sent; according to the corresponding priority of the data type to be sent and the preset initial key update rate, the target key update rate of the data type to be sent is determined, so that the intelligent operation and maintenance information system of the distribution room updates the quantum key for transmitting the data type to be sent according to the target key update rate. In this way, the attention of each data type in the intelligent operation and maintenance information system of the distribution room is calculated from multiple dimensions, including the correlation between the data type and the intelligent operation and maintenance information system of the distribution room, the transmission anomalies of the data type, and the degree of change in the data amplitude of the data type, so that the calculated attention is more accurate. The attention is then used to analyze the key update rate corresponding to each data type, so that the generated key update rate is more reasonable, which solves the problem of fixed key update rate, thereby ensuring the security of data during transmission in the intelligent operation and maintenance information system of the distribution room. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of a power distribution room intelligent operation and maintenance information system based on quantum encryption according to an embodiment of the present invention; Figure 2 A specific flow chart of a method for determining the correlation between each preset data type and the intelligent operation and maintenance information system of a power distribution room provided by an embodiment of the present invention; Figure 3 A schematic diagram of a specific flow chart of a method for determining transmission anomalies of various data types in historical transmission data provided by an embodiment of the present invention; Figure 4 A schematic diagram of a specific flow chart of a method for determining the degree of change of data amplitudes of various data types in historical transmission data provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the specific implementation method, structure, characteristics and effects of a power distribution room intelligent operation and maintenance information system based on quantum encryption proposed in accordance with the present invention in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0018] It should be noted that in order to ensure that the calculation results are meaningful, when performing fractional operations in the embodiments of the present invention, when the denominator is 0, it is necessary to add a parameter adjustment factor greater than 0 to the denominator to prevent the denominator from being 0. The value of the parameter adjustment factor is set by the implementer according to actual conditions, and this application does not impose any special restrictions.

[0019] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0020] See also Figure 1 , which shows a schematic diagram of a power distribution room intelligent operation and maintenance information system based on quantum encryption according to an embodiment of the present invention. In an exemplary embodiment, a power distribution room intelligent operation and maintenance information system based on quantum encryption is provided, including: The analysis module 110 is used to determine the attention of each data type in the intelligent operation and maintenance information system of the power distribution room according to the correlation between each preset data type and the intelligent operation and maintenance information system of the power distribution room, the transmission anomaly of each data type in the historical transmission data, and the degree of change of the data amplitude of each data type in the historical transmission data; The screening module 120 is used to determine the data type to be sent according to the bandwidth load of the intelligent operation and maintenance information system of the power distribution room and the bandwidth occupancy of each data type; The priority determination module 130 is used to sort the data types to be sent according to the attention of each data type in the intelligent operation and maintenance information system of the power distribution room, and obtain the priority corresponding to the data type to be sent; The key update rate determination module 140 is used to determine the target key update rate of the data type to be sent according to the priority corresponding to the data type to be sent and the preset initial key update rate, so that the intelligent operation and maintenance information system of the distribution room updates the quantum key for transmitting the data type to be sent according to the target key update rate.

[0021] Exemplarily, the historical transmission data in the analysis module is generated based on the quantum key transmission data. Therefore, before the intelligent operation and maintenance information system of the power distribution room obtains the historical transmission data, it is necessary to obtain the quantum key first.

[0022] Preferably, the method for determining the quantum key includes: when the measurement basis vector of the quantum bit received by the receiver is the same as the measurement basis vector of the quantum bit sent by the sender of the intelligent operation and maintenance information system of the distribution room, generating a quantum key based on the quantum bits with the same measurement basis vector.

[0023] Specifically, it is necessary to configure the equipment first, that is, to deploy the quantum key distribution (QKD) core equipment in the regional distribution center, and configure the high-speed quantum light source and single-photon detector. At the same time, quantum communication terminals (QCT) are installed in each distribution room, and the core nodes are connected through existing optical fibers (such as OPGW optical cables) or dedicated quantum channels. Then, the sender of the intelligent operation and maintenance information system of the distribution room prepares a series of quantum bits, which are in a specific quantum state. The sender of the intelligent operation and maintenance information system of the distribution room sends these quantum bits to the receiver through a quantum channel (such as optical fiber).

[0024] After receiving each quantum bit, the receiver randomly selects a measurement basis for measurement. If the sender and receiver of the intelligent operation and maintenance information system of the power distribution room disclose the measurement basis they selected through the classical channel, the results of the quantum bits that selected the same measurement basis are retained, and these results are used to generate quantum keys. Finally, partial quantum keys are compared through public channels, and the quantum bit error rate (QBER) is calculated. If QBER is less than 3%, continue. Then use the hash function to compress the quantum key to eliminate potential information leakage. After privacy amplification, a secure shared key is obtained.

[0025] For example, when the proportion of data of a certain data type in the number of transmissions within a period of time is large, and the higher the frequency of abnormal situations, the greater the possibility of the data type being at risk during the data transmission process, and the more attention it needs to be paid. Therefore, it is necessary to determine the attention of each data type in the intelligent operation and maintenance information system of the power distribution room from multiple dimensions. For example, combined with the degree of change of the transmission data, for data with a large change range, the data type may have a high requirement for real-time performance, and its attention should also be appropriately increased. For another example, combined with the correlation between the transmission data and the business of the intelligent operation and maintenance information system of the power distribution room, for data with a high correlation, the more important the data type is in the intelligent operation and maintenance information system, the greater the contribution to the stable operation of the power grid, so the higher the attention set for it. For another example, when the data scale of a certain data type is larger within a period of time (that is, the corresponding data type has a larger proportion of the total number of data), it means that the amount of data generated in this period is large, and more attention needs to be paid to the security issues in its transmission process. Further considering the number of abnormal transmissions during the transmission process, if quantum channel eavesdropping occurs, the receiver cannot receive valid data, and it is necessary to further increase the attention of this data type in the intelligent operation and maintenance information system of the power distribution room. Therefore, the degree of attention paid to data types in the intelligent operation and maintenance information system of the distribution room can be calculated from three aspects: the correlation between the data type and the intelligent operation and maintenance information system of the distribution room, the transmission abnormalities of the data type, and the degree of change in the data amplitude of the data type.

[0026] Preferably, if Figure 2 As shown, the method for determining the correlation between each preset data type and the intelligent operation and maintenance information system of the power distribution room includes: S210, extracting the risk parameter corresponding to the x-th data type; S220. Perform a sum operation on the risk parameters corresponding to the x-th data type to obtain a first operation result, and calculate the first operation result according to a preset first weight coefficient to obtain a correlation between the x-th data type and the intelligent operation and maintenance information system of the power distribution room.

[0027] Specifically, the data type may be a data type such as fault data. Risk parameters include: impact of power outage, risk of equipment damage, degree of dependence on operation and maintenance decisions, etc. In this embodiment, the scoring range of the risk parameter setting is 1-5 points, and other score ranges may also be set, which are not limited here. It can be understood that the sum operation of the risk parameters is to calculate the scores corresponding to each risk parameter.

[0028] In this embodiment, the correspondence between each data type and the risk parameter can be stored in the form of a table. After the xth data type is determined, the scores corresponding to each risk parameter can be found in the correspondence between each data type and the risk parameter and calculated. The calculation formula for the correlation between the xth data type and the intelligent operation and maintenance information system of the power distribution room is as follows: in, Indicates the correlation between the xth data type and the intelligent operation and maintenance information system of the power distribution room; Indicates The data type The score corresponding to each risk parameter; k represents the total number of risk parameters; Indicates the preset first weight coefficient.

[0029] Preferably, the method for generating historical transmission data includes: determining the order of association according to the association between each preset data type and the intelligent operation and maintenance information system of the power distribution room; transmitting the required data to be sent according to the order of association to generate historical transmission data.

[0030] Specifically, after calculating the correlation between each data type and the intelligent operation and maintenance information system of the power distribution room according to the above formula, sort them in descending order according to the numerical value of the correlation to obtain the correlation order. Then determine the required transmission data of the intelligent operation and maintenance information system of the power distribution room, sort the required transmission data according to the order of correlation, and transmit the sorted required transmission data according to the quantum key. Among them, the preset initial key update rate is 10 minutes. Finally, based on the preset initial key update rate, continue to transmit for 30 minutes to generate historical transmission data.

[0031] Preferably, if Figure 3 As shown, the method for determining the transmission abnormality of each data type in the historical transmission data includes: S310, determining the sending ratio of the sending data volume of the xth data type to the sending data volume of each data type in the historical transmission data; S320, determining a transmission anomaly coefficient of the xth data type according to the amount of sent data of the xth data type and the amount of received data of the xth data type; S330 . Determine the transmission abnormality of the x-th data type according to the sending ratio and the transmission abnormality coefficient of the x-th data type.

[0032] Specifically, we first need to clarify the data type that needs to be transmitted in the intelligent operation and maintenance information system of the power distribution room, and set the required transmission data corresponding to the xth data type in the intelligent operation and maintenance information system as: in, Indicates the sending data corresponding to the xth data type that needs to be transmitted in the system; Indicates the xth data type in the transmission process. The data value of the data.

[0033] The calculation formula for calculating the transmission anomaly of the x-th data type is as follows: in, Indicates the transmission exception of the xth data type; Indicates the amount of data sent for each data type in the historical transmission data (i.e. the total amount of data in the historical transmission data); Indicates the amount of data sent for the xth data type in the historical transmission data (i.e., the amount of data sent by the sender); Indicates the amount of data received for the xth data type in the historical transmission data (i.e., the amount of data received by the receiver).

[0034] In this way, the transmission anomalies of each data type are calculated by utilizing the proportion of each data type in the transmission process and the frequency of abnormal reception. This can determine the data situation of each data type that cannot be received by the receiver, thereby more reasonably analyzing the attention of each data type in the intelligent operation and maintenance information system of the distribution room, and then effectively sorting the transmission priority of each data type.

[0035] Preferably, if Figure 4 As shown, the method for determining the degree of change of the data amplitude of each data type in the historical transmission data includes: S410, determining a range of a transmission data value of the xth data type according to a maximum transmission data value corresponding to the xth data type and a minimum transmission data value corresponding to the xth data type; S420, performing a sum operation on the differences of adjacent transmitted data corresponding to the x-th data type to obtain a second operation result, and calculating a ratio of the second operation result to the amount of transmitted data of the x-th data type to obtain an amplitude variation coefficient of the x-th data type; S430. Determine the degree of change in the data amplitude of the xth data type according to the range of the transmitted data value of the xth data type and the amplitude change coefficient of the xth data type.

[0036] Specifically, the calculation formula for the degree of change in the data amplitude of the x-th data type is as follows: in, Indicates the degree of change in the data amplitude of the x-th data type; Indicates the maximum sent data value corresponding to the xth data type (i.e. data set the maximum value in ); Indicates the minimum sent data value corresponding to the xth data type (i.e., data set ).

[0037] Furthermore, according to the correlation between each preset data type and the intelligent operation and maintenance information system of the power distribution room, the transmission anomaly of each data type in the historical transmission data, and the degree of change of the data amplitude of each data type in the historical transmission data, the attention of each data type in the intelligent operation and maintenance information system of the power distribution room is determined, including: Calculate the data amplitude change degree of the x-th data type according to the preset second weight coefficient to obtain the target data amplitude change degree of the x-th data type; Calculate the correlation between the x-th data type and the intelligent operation and maintenance information system of the power distribution room according to the preset third weight coefficient to obtain the target correlation of the x-th data type; The transmission abnormality of the x-th data type is calculated according to the preset fourth weight coefficient to obtain the target transmission abnormality of the x-th data type; the target data amplitude change degree of the x-th data type, the target correlation of the x-th data type and the target transmission abnormality of the x-th data type are summed to obtain the attention level of the x-th data type in the intelligent operation and maintenance information system of the distribution room.

[0038] Specifically, the preset second weight coefficient, the preset third weight coefficient, and the preset fourth weight coefficient may be values ​​set according to work experience, which are not limited here.

[0039] In this embodiment, the calculation formula for the attention of the x-th data type in the intelligent operation and maintenance information system of the power distribution room is as follows: in, Indicates the attention of the x-th data type in the intelligent operation and maintenance information system of the power distribution room; Indicates the preset second weight coefficient (i.e., the weight value of the data's value change in the calculation of the importance), which is generally set to 0.35; Indicates the degree of change in the target data amplitude of the x-th data type; Indicates the preset third weight coefficient (i.e., the weight value of the business relevance of the data in the calculation of the importance), which is generally set to 0.4; Indicates the target relevance of the x-th data type; Indicates the preset fourth weight coefficient (i.e., the weight value of the data transmission performance in the calculation of the importance), which is generally set to 0.25; Indicates the target transmission exception of the x-th data type.

[0040] In this way, the attention degree of each data type in the intelligent operation and maintenance information system of the power distribution room is calculated based on the above formula. In this way, the data transmission conditions of different data types in the historical transmission data, the correlation between different data types and the business, and the amplitude change degree during the data transmission process are used to analyze the importance (i.e. attention degree) of different data types from multiple dimensions, and then the transmission priority of each data type is effectively sorted.

[0041] Furthermore, although the above process completes the calculation of the attention of all data types in the historical data generated by the intelligent operation and maintenance system of the power distribution room, in the actual operation of the system, various abnormal situations may be encountered, and the attention of the data type needs to be dynamically corrected, which helps to analyze the priority of various data types in the subsequent transmission process.

[0042] Preferably, after determining the attention level of each data type in the intelligent operation and maintenance information system of the distribution room, it also includes: using a preset sudden event dynamic correction table to correct the attention level of each data type in the intelligent operation and maintenance information system of the distribution room, and obtaining the corrected attention level of each data type in the intelligent operation and maintenance information system of the distribution room.

[0043] Specifically, the preset sudden event dynamic correction table is pre-set, which lists the dynamic correction coefficients corresponding to different sudden events. It can be understood that the dynamic correction coefficients corresponding to different sudden events are set according to actual work experience. The calculation formula is as follows: in, Indicates The data type is The dynamic correction coefficient when a sudden event occurs, for example, the dynamic correction coefficient corresponding to a sudden power outage is 0.8, and the dynamic correction coefficient corresponding to high temperature is 0.5, and there is no limit on this.

[0044] Exemplarily, in the screening module, it is necessary to screen out the data types that can be sent by the intelligent operation and maintenance information system of the distribution room, so it is necessary to first determine the bandwidth load of the intelligent operation and maintenance information system of the distribution room and the bandwidth occupancy of each data type.

[0045] Preferably, the method for determining the bandwidth occupancy of each data type includes: determining the bandwidth occupancy coefficient based on the additional bandwidth occupied by quantum key distribution and the protocol encapsulation overhead; determining the bandwidth occupancy of the x-th data type based on the bandwidth occupancy coefficient and the original bandwidth of the x-th data type.

[0046] Specifically, the original bandwidth of the x-th data type is obtained in advance, the additional bandwidth occupied by quantum key distribution is determined based on the protocol, such as the BB84 protocol requires 10% redundancy, and the protocol encapsulation overhead is determined based on the message header, such as the IEC61850 message header increases the load by 5%.

[0047] The calculation formula for the bandwidth usage of the xth data type is as follows: in, Indicates the original bandwidth of the x-th data type; represents the additional bandwidth occupied by quantum key distribution; Represents the protocol encapsulation overhead; Indicates the bandwidth usage of the x-th data type.

[0048] In the screening module, after calculating the bandwidth occupancy of each data type based on the above formula, the data type that can be sent within the system bandwidth tolerance range is selected according to the bandwidth load of the intelligent operation and maintenance information system of the distribution room, and it is used as the data type to be sent.

[0049] Furthermore, in the priority determination module, the data types to be sent are sorted in descending order according to the calculated attention levels of each data type in the intelligent operation and maintenance information system of the power distribution room, that is, they are sorted from high to low according to the attention levels, to obtain the priority level corresponding to the data type to be sent.

[0050] Further, according to the priority of the data type to be sent and the preset initial key update rate, determining the target key update rate of the data type to be sent includes: Determine the level of the last priority in the priority corresponding to the data type to be sent; determine the rate update coefficient according to the priority of the x-th data type and the level of the last priority; determine the target key update rate of the data type to be sent according to the preset initial key update rate and the rate update coefficient.

[0051] Specifically, the calculation formula for the target key update rate of the data type to be sent is as follows: in, Indicates the target key update rate for the type of data to be sent.

[0052] Indicates the priority of the data type to be sent (1 means the highest priority); Indicates the level of the last priority, that is, the level corresponding to the lowest priority; Indicates 10 minutes. The system default key update rate is: once every 10 minutes.

[0053] In this way, for data types with high priority, it means that they are more important in the data transmission process of the intelligent operation and maintenance information system of the power distribution room, and more frequent key updates are required to ensure security. However, since 1 represents the highest priority, the level corresponding to the data type to be sent is subtracted from the level with a large level, so as to obtain a more frequent key update rate.

[0054] Furthermore, based on the calculated key update rates of various data types, when the system starts to transmit a new data type, the quantum key is updated according to the calculated target key update rate corresponding to the data type. In order to further ensure the security of quantum keys, the power distribution room intelligent operation information system recalculates the key update rate of each data type every 30 minutes of data transmission to ensure the security of data transmission in the power distribution room intelligent operation and maintenance information system.

[0055] Thus, in this technical solution, the attention of each data type in the intelligent operation and maintenance information system of the distribution room is calculated from multiple dimensions, and the key update rate corresponding to each data type is analyzed using the attention, which solves the problem of fixed key update rate, thereby ensuring the security of data during transmission in the intelligent operation and maintenance information system of the distribution room.

[0056] It should be noted that the sequence of the above embodiments of the present invention is only for description and does not represent the advantages and disadvantages of the embodiments. The processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0057] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

Claims

1. A power distribution room intelligent operation and maintenance information system based on quantum encryption, characterized in that: include: An analysis module is used to determine the attention of each data type in the intelligent operation and maintenance information system of the power distribution room according to the correlation between each preset data type and the intelligent operation and maintenance information system of the power distribution room, the transmission anomaly of each data type in the historical transmission data, and the degree of change of the data amplitude of each data type in the historical transmission data; The screening module is used to determine the data type to be sent according to the bandwidth load of the intelligent operation and maintenance information system of the power distribution room and the bandwidth occupancy of each data type; The priority determination module is used to sort the data types to be sent according to the attention of each data type in the intelligent operation and maintenance information system of the power distribution room, and obtain the priority corresponding to the data type to be sent; The key update rate determination module is used to determine the target key update rate of the data type to be sent according to the priority corresponding to the data type to be sent and the preset initial key update rate, so that the intelligent operation and maintenance information system of the distribution room can update the quantum key for transmitting the data type to be sent according to the target key update rate.

2. According to the quantum encryption-based intelligent operation and maintenance information system for power distribution rooms according to claim 1, it is characterized in that: Methods for determining the correlation between each preset data type and the intelligent operation and maintenance information system of the power distribution room include: Extract the risk parameter corresponding to the x-th data type; A first operation result is obtained by summing the risk parameters corresponding to the x-th data type, and the first operation result is calculated according to a preset first weight coefficient to obtain a correlation between the x-th data type and the intelligent operation and maintenance information system of the power distribution room.

3. The intelligent operation and maintenance information system for power distribution rooms based on quantum encryption according to claim 1 is characterized in that: Methods for determining transmission anomalies of various data types in historical transmission data include: Determine the sending ratio of the sending data volume of the x-th data type to the sending data volume of each data type in the historical transmission data; Determine a transmission anomaly coefficient of the xth data type according to the amount of data sent of the xth data type and the amount of data received of the xth data type; The transmission abnormality of the x-th data type is determined according to the sending ratio and the transmission abnormality coefficient of the x-th data type.

4. The intelligent operation and maintenance information system for power distribution rooms based on quantum encryption according to claim 1 is characterized in that: The method for determining the degree of change of the data amplitude of each data type in the historical transmission data includes: Determine the range of the sent data value of the xth data type according to the maximum sent data value corresponding to the xth data type and the minimum sent data value corresponding to the xth data type; Performing a sum operation on the differences between adjacent transmission data corresponding to the x-th data type to obtain a second operation result, and calculating a ratio of the second operation result to the amount of transmission data of the x-th data type to obtain an amplitude variation coefficient of the x-th data type; The degree of change in the data amplitude of the x-th data type is determined based on the range of the transmitted data value of the x-th data type and the amplitude change coefficient of the x-th data type.

5. The intelligent operation and maintenance information system for power distribution room based on quantum encryption according to any one of claims 2 to 4, characterized in that: The method for generating historical transmission data includes: Determine the order of correlation according to the correlation between each preset data type and the intelligent operation and maintenance information system of the power distribution room; The required data is transmitted in the order of relevance to generate historical transmission data.

6. The intelligent operation and maintenance information system for power distribution rooms based on quantum encryption according to claim 5 is characterized in that: According to the correlation between each preset data type and the intelligent operation and maintenance information system of the power distribution room, the transmission anomalies of each data type in the historical transmission data, and the degree of change of the data amplitude of each data type in the historical transmission data, the attention of each data type in the intelligent operation and maintenance information system of the power distribution room is determined, including: Calculate the data amplitude change degree of the x-th data type according to the preset second weight coefficient to obtain the target data amplitude change degree of the x-th data type; Calculate the correlation between the x-th data type and the intelligent operation and maintenance information system of the power distribution room according to the preset third weight coefficient to obtain the target correlation of the x-th data type; Calculating the transmission abnormality of the x-th data type according to a preset fourth weight coefficient to obtain a target transmission abnormality of the x-th data type; The target data amplitude change degree of the x-th data type, the target correlation degree of the x-th data type and the target transmission abnormality of the x-th data type are summed to obtain the attention degree of the x-th data type in the intelligent operation and maintenance information system of the distribution room.

7. The intelligent operation and maintenance information system for power distribution rooms based on quantum encryption according to claim 6 is characterized in that: After determining the attention of each data type in the intelligent operation and maintenance information system of the power distribution room, it also includes: The preset sudden event dynamic correction table is used to correct the attention level of each data type in the intelligent operation and maintenance information system of the power distribution room, and the corrected attention level of each data type in the intelligent operation and maintenance information system of the power distribution room is obtained.

8. The intelligent operation and maintenance information system for power distribution rooms based on quantum encryption according to claim 1 is characterized in that: Methods for determining bandwidth usage of each data type include: Determine the bandwidth occupancy factor based on the additional bandwidth occupied by quantum key distribution and the protocol encapsulation overhead; The bandwidth occupancy of the x-th data type is determined according to the bandwidth occupancy coefficient and the original bandwidth of the x-th data type.

9. The intelligent operation and maintenance information system for power distribution rooms based on quantum encryption according to claim 8 is characterized in that: Determining a target key update rate for the data type to be sent according to the priority of the data type to be sent and a preset initial key update rate includes: Determine the level of the last priority among the priorities corresponding to the data types to be sent; Determine the rate update coefficient according to the priority of the x-th data type and the level of the last priority; The target key update rate of the data type to be sent is determined according to the preset initial key update rate and the rate update coefficient.

10. The intelligent operation and maintenance information system for power distribution room based on quantum encryption according to claim 1 is characterized in that: Methods for determining quantum keys include: When the measurement basis vector of the quantum bit received by the receiver is the same as the quantum bit sent by the sender of the intelligent operation and maintenance information system of the power distribution room, a quantum key is generated based on the quantum bits with the same measurement basis vector.

Images