阅读说明：本技术 一种电网安全监测系统 (Power grid safety monitoring system ) 是由 谢磊 毛李帆 余加喜 吴锋 何勇琪 陈煌 莫若慧 黎值源 李聪 于 2021-06-24 设计创作，主要内容包括：本发明提供一种电网安全监测系统,包括远程后台服务器、区域服务器和节点监测基站,节点监测基站安装于电网节点处,用于监测电网节点的安全参数,多个节点监测基站与区域服务器通讯相连,以向区域服务器传输监测数据,区域服务器与远程后台服务器通讯相连,用于对节点监测模块传输的监测数据进行数据分析后获取电网节点的安全情况,并将获取到的监测数据、安全情况传输至远程后台服务器,远程后台服务器用于对电网节点的监测数据、安全情况进行记录和故障警报,多个电网节点的安全监测结果通过一个区域服务器进行数据分析,从而降低远程后台的工作压力,有助于提高电网安全监测的效率和准确性,降低电网安全监测的难度。(The invention provides a power grid safety monitoring system, which comprises a remote background server, a regional server and node monitoring base stations, wherein the node monitoring base stations are arranged at nodes of a power grid and are used for monitoring safety parameters of the nodes of the power grid, a plurality of node monitoring base stations are in communication connection with the regional server so as to transmit monitoring data to the regional server, the regional server is in communication connection with the remote background server and is used for carrying out data analysis on the monitoring data transmitted by a node monitoring module so as to obtain the safety condition of the nodes of the power grid and transmitting the obtained monitoring data and safety condition to the remote background server, the remote background server is used for recording the monitoring data and safety condition of the nodes of the power grid and giving a fault alarm, the safety monitoring results of the nodes of the power grid are subjected to data analysis by one regional server so as to reduce the working pressure of the remote background, the efficiency and the accuracy of power grid safety monitoring are improved, and the difficulty of power grid safety monitoring is reduced.)

1. The utility model provides a power grid safety monitoring system, its characterized in that, the system includes long-range backend server, regional server and node monitoring base station, node monitoring base station installs in the power grid node for monitor power grid node's safety parameter, and is a plurality of node monitoring base station links to each other with regional server communication, in order to transmit monitoring data to regional server, regional server links to each other with long-range backend server communication for carry out data analysis to the monitoring data of node monitoring module transmission and obtain the security condition of power grid node after, and transmit monitoring data, the security condition who obtains to long-range backend server, long-range backend server is used for taking notes and the fault alarm to the monitoring data of power grid node, security condition.

2. The system according to claim 1, wherein the node monitoring base station comprises an electrical monitoring module, a physical monitoring module, a node communication module and a base station control module,

the electrical property monitoring module is used for acquiring electrical parameters of the power grid node;

the physical monitoring module is used for acquiring the structural configuration condition of the power grid node;

the node communication module is used for establishing remote communication between the node monitoring base station and the regional server;

the base station control module is used as a control core of the node monitoring base station;

the electrical property monitoring module and the physical property monitoring module are respectively electrically connected with the base station control module, and the base station control module is in communication connection with the regional server through the node communication module.

3. The system according to claim 2, wherein the electrical monitoring module comprises a voltage detection unit, a current detection unit and an impedance detection unit, and the voltage detection unit, the current detection unit and the impedance detection unit are respectively connected to the power grid and are respectively electrically connected to the base station control module.

4. The grid security monitoring system according to claim 2, wherein the node monitoring base station further comprises a reserve power supply, the reserve power supply is electrically connected to the electrical monitoring module, the physical monitoring module, the node communication module, and the base station control module, respectively, and the reserve power supply is configured to provide electric energy for operation of the node monitoring base station when the grid is unable to supply power.

5. The grid safety monitoring system according to claim 1, wherein the regional server comprises a data storage module, a data analysis module, a regional communication module and a regional control module,

the data storage module is used for storing the proofreading data;

the data analysis module is used for comparing the monitoring data and the proofreading data returned by the node monitoring base station;

the regional communication module is used for establishing communication connection between a regional server and a node monitoring base station or a remote background server;

the area control module is used as a control core of the area server;

the data storage module and the data analysis module are respectively and electrically connected with the area control module, and the area control module is respectively in communication connection with the node monitoring base station and the remote background server through the area communication module.

6. The grid safety monitoring system according to claim 5, wherein the calibration data comprises an appearance image of the grid node and/or electrical parameter data of the grid node during normal operation.

7. The grid safety monitoring system according to claim 1, wherein the remote background server comprises a data center, an industrial control center, an alarm module and a communication module,

the data center is used for storing power grid monitoring data and lower computer operation data;

the industrial control center is used for realizing background control;

the alarm module is used for prompting and alarming the fault information of the power grid node;

the communication module is used for establishing communication between the remote background server and the regional server;

the data center and the alarm module are respectively and electrically connected with the industrial control center, and the industrial control center is in communication connection with the plurality of regional servers through the communication module.

8. The grid safety monitoring system according to claim 1, wherein the region server further comprises a classification module, a first map creation module and a resource conversion module,

the classification module is used for identifying the type of monitoring data returned by the node monitoring base station and classifying the monitoring data according to the type of the monitoring data, wherein the type of the monitoring data comprises a power grid data type and a power grid info type;

the first map establishing module is used for establishing a power grid safety knowledge map based on monitoring data and the type of the monitoring data, wherein the power grid safety knowledge map comprises a data map, an info map and a knowledge map, the data map is composed of power grid data, the info map is composed of power grid info data, and the knowledge map is composed of power grid knowledge data;

the resource conversion module is used for realizing mutual conversion among the power grid data, the power grid info data and the power grid knowledge data.

9. The grid security detection system according to claim 8, wherein the region server further comprises a security level assessment module, an encryption module and a marking module,

the security level evaluation module is used for judging whether monitoring data to be sent to the remote background server by the regional server reaches a security level according to preset conditions, wherein the monitoring data to be sent to the remote background server by the regional server is called to-be-sent monitoring data;

the encryption module is used for encrypting the monitoring data to be sent when the confidentiality grade evaluation module judges that the monitoring data to be sent reaches the confidentiality grade, and the encryption specifically comprises the following steps:

when the monitoring data to be transmitted only comprise power grid data, acquiring the power grid data transmitted to a remote background server by a regional server at the previous time through a data map, calculating the calculation cost of performing cross-mode conversion on the acquired power grid data, generating a key by taking the calculation cost result as a parameter of a key generation algorithm, and encrypting the monitoring data to be transmitted through the generated key;

when the to-be-transmitted detection data only comprises power grid info data, acquiring the power grid info data which is transmitted to a remote background server from a regional server at the previous time through an info map, calculating the calculation cost of performing cross-mode conversion on the acquired power grid info data, generating a key by taking the calculation cost result as a parameter of a key generation algorithm, and encrypting the to-be-transmitted monitoring data through the generated key;

when the to-be-transmitted detection data comprise power grid data and power grid info data, respectively acquiring the power grid data and the power grid info data which are transmitted to a remote background server from a region server at the previous time through a data map and an info map, respectively calculating the calculation cost for performing cross-mode conversion on the acquired power grid data and the power grid info data, combining the two calculation costs as a parameter of a key generation algorithm to generate a key, encrypting the to-be-transmitted monitoring data through the generated key, and converting the encrypted to-be-transmitted monitoring data into encrypted monitoring data;

the marking module is used for marking the encrypted monitoring data differently according to the monitoring data types contained in the encrypted monitoring data.

10. The grid security detection system according to claim 9, wherein the remote backend server comprises a second map creation module and a decryption module,

the second map establishing module is used for establishing a power grid safety knowledge map according to the received monitoring data, wherein the power grid safety knowledge map comprises a data map, an info map and a knowledge map;

the decryption module is used for identifying the received encrypted monitoring data mark to judge the monitoring data type contained in the encrypted monitoring data, acquiring historical power grid data and/or historical power grid info data from a power grid security knowledge graph according to the monitoring data type contained in the encrypted monitoring data, calculating the cross-mode conversion calculation cost of the historical power grid data and/or the historical power grid info data, generating a key by taking the calculation cost result as a parameter of a key generation algorithm, and decrypting the encrypted monitoring data through the generated key.

Technical Field

The invention relates to the technical field of power grid safety, in particular to a power grid safety monitoring system.

Background

Due to the fact that power grids are increasingly enlarged and intensive, data collection and monitoring unification cannot be achieved in the existing power grid monitoring work, the problem that fault misinformation often occurs in monitoring of power grid nodes or the fault position and the fault reason cannot be determined in the first time after the power grid nodes are in fault is caused, and therefore the power grid monitoring difficulty is increased and the power grid monitoring efficiency is reduced. Therefore, a new grid safety monitoring system is needed to solve this problem.

Disclosure of Invention

In view of the above, the present invention is directed to a grid safety monitoring system, which overcomes or at least partially solves the above-mentioned problems of the prior art.

In order to achieve the purpose, the invention provides a power grid safety monitoring system which comprises a remote background server, a regional server and node monitoring base stations, wherein the node monitoring base stations are installed at nodes of a power grid and used for monitoring safety parameters of the nodes of the power grid, a plurality of the node monitoring base stations are in communication connection with the regional server so as to transmit monitoring data to the regional server, the regional server is in communication connection with the remote background server and used for carrying out data analysis on the monitoring data transmitted by a node monitoring module, then acquiring the safety condition of the nodes of the power grid, and transmitting the acquired monitoring data and safety condition to the remote background server, and the remote background server is used for recording and alarming faults of the monitoring data and safety condition of the nodes of the power grid.

Furthermore, the node monitoring base station comprises an electrical monitoring module, a physical monitoring module, a node communication module and a base station control module,

the electrical property monitoring module is used for acquiring electrical parameters of the power grid node;

the physical monitoring module is used for acquiring the structural configuration condition of the power grid node;

the node communication module is used for establishing remote communication between the node monitoring base station and the regional server;

the base station control module is used as a control core of the node monitoring base station;

the electrical property monitoring module and the physical property monitoring module are respectively electrically connected with the base station control module, and the base station control module is in communication connection with the regional server through the node communication module.

Furthermore, the electrical property monitoring module comprises a voltage detection unit, a current detection unit and an impedance detection unit, wherein the voltage detection unit, the current detection unit and the impedance detection unit are respectively connected to the power grid and are respectively electrically connected with the base station control module.

Further, the node monitoring base station further comprises a reserve power supply, the reserve power supply is electrically connected with the electrical property monitoring module, the physical monitoring module, the node communication module and the base station control module respectively, and the reserve power supply is used for providing electric energy for the operation of the node monitoring base station when the power grid cannot supply power.

Further, the area server comprises a data storage module, a data analysis module, an area communication module and an area control module,

the data storage module is used for storing the proofreading data;

the data analysis module is used for comparing the monitoring data and the proofreading data returned by the node monitoring base station;

the regional communication module is used for establishing communication connection between a regional server and a node monitoring base station or a remote background server;

the area control module is used as a control core of the area server;

the data storage module and the data analysis module are respectively and electrically connected with the area control module, and the area control module is respectively in communication connection with the node monitoring base station and the remote background server through the area communication module.

Further, the calibration data includes an appearance image of the power grid node and/or electrical parameter data of the power grid node during normal operation.

Further, the remote background server comprises a data center, an industrial control center, an alarm module and a communication module,

the data center is used for storing power grid monitoring data and lower computer operation data;

the industrial control center is used for realizing background control;

the alarm module is used for prompting and alarming the fault information of the power grid node;

the communication module is used for establishing communication between the remote background server and the regional server;

the data center and the alarm module are respectively and electrically connected with the industrial control center, and the industrial control center is in communication connection with the plurality of regional servers through the communication module.

Further, the region server also comprises a classification module, a first map building module and a resource conversion module,

the classification module is used for identifying the type of monitoring data returned by the node monitoring base station and classifying the monitoring data according to the type of the monitoring data, wherein the type of the monitoring data comprises a power grid data type and a power grid info type;

the first map establishing module is used for establishing a power grid safety knowledge map based on monitoring data and the type of the monitoring data, wherein the power grid safety knowledge map comprises a data map, an info map and a knowledge map, the data map is composed of power grid data, the info map is composed of power grid info data, and the knowledge map is composed of power grid knowledge data;

the resource conversion module is used for realizing mutual conversion among the power grid data, the power grid info data and the power grid knowledge data.

Further, the area server also comprises a security level evaluation module, an encryption module and a marking module,

the security level evaluation module is used for judging whether monitoring data to be sent to the remote background server by the regional server reaches a security level according to preset conditions, wherein the monitoring data to be sent to the remote background server by the regional server is called to-be-sent monitoring data;

the encryption module is used for encrypting the monitoring data to be sent when the confidentiality grade evaluation module judges that the monitoring data to be sent reaches the confidentiality grade, and the encryption specifically comprises the following steps:

when the monitoring data to be transmitted only comprise power grid data, acquiring the power grid data transmitted to a remote background server by a regional server at the previous time through a data map, calculating the calculation cost of performing cross-mode conversion on the acquired power grid data, generating a key by taking the calculation cost result as a parameter of a key generation algorithm, and encrypting the monitoring data to be transmitted through the generated key;

when the to-be-transmitted detection data only comprises power grid info data, acquiring the power grid info data which is transmitted to a remote background server from a regional server at the previous time through an info map, calculating the calculation cost of performing cross-mode conversion on the acquired power grid info data, generating a key by taking the calculation cost result as a parameter of a key generation algorithm, and encrypting the to-be-transmitted monitoring data through the generated key;

when the to-be-transmitted detection data comprise power grid data and power grid info data, respectively acquiring the power grid data and the power grid info data which are transmitted to a remote background server from a region server at the previous time through a data map and an info map, respectively calculating the calculation cost for performing cross-mode conversion on the acquired power grid data and the power grid info data, combining the two calculation costs as a parameter of a key generation algorithm to generate a key, encrypting the to-be-transmitted monitoring data through the generated key, and converting the encrypted to-be-transmitted monitoring data into encrypted monitoring data;

the marking module is used for marking the encrypted monitoring data differently according to the monitoring data types contained in the encrypted monitoring data.

Further, the remote background server comprises a second map establishing module and a decryption module,

the second map establishing module is used for establishing a power grid safety knowledge map according to the received monitoring data, wherein the power grid safety knowledge map comprises a data map, an info map and a knowledge map;

the decryption module is used for identifying the received encrypted monitoring data mark to judge the monitoring data type contained in the encrypted monitoring data, acquiring historical power grid data and/or historical power grid info data from a power grid security knowledge graph according to the monitoring data type contained in the encrypted monitoring data, calculating the cross-mode conversion calculation cost of the historical power grid data and/or the historical power grid info data, generating a key by taking the calculation cost result as a parameter of a key generation algorithm, and decrypting the encrypted monitoring data through the generated key.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the power grid safety monitoring system, the plurality of regional servers are connected to the lower position of the remote background server in a hanging mode, the plurality of node monitoring base stations are connected to the lower position of the regional server in a hanging mode, data analysis is conducted on safety monitoring results of the plurality of power grid nodes through the regional servers, accordingly, working pressure of the remote background is reduced, efficiency and accuracy of power grid safety monitoring are improved, and difficulty of the power grid safety monitoring is reduced.

2. The power grid safety monitoring system obtains the electric parameters and the structural configuration condition of the power grid nodes, and therefore data of the running state and the external structure of the power grid nodes are used as reference data of safety monitoring, whether the power grid nodes run normally or not and whether the external structure of the power grid nodes falls off or not, a case is damaged or not, a circuit is broken or not can be effectively and accurately judged, and therefore the reliability of the power grid safety monitoring system is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive efforts.

Fig. 1 is a schematic view of an overall structure of a power grid safety monitoring system according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an overall structure of a node monitoring base station according to an embodiment of the present invention.

Fig. 3 is a schematic block diagram of an electrical monitoring module according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of an overall structure of the area server according to an embodiment of the present invention.

Fig. 5 is a schematic overall structure diagram of a remote backend server according to an embodiment of the present invention.

In the figure, 1 is a remote background server, 101 is a data center, 102 is an industrial control center, 103 is an alarm module, 104 is a communication module, 2 is a regional server, 201 is a data storage module, 202 is a data analysis module, 203 is a regional communication module, 204 is a regional control module, 3 is a node monitoring base station, 301 is an electrical property monitoring module, 3011 is a voltage detection unit, 3012 is a current detection unit, 3013 is an impedance detection unit, 302 is a physical monitoring module, 303 is a node communication module, and 304 is a base station control module.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, the illustrated embodiments are provided to illustrate the invention and not to limit the scope of the invention.

Referring to fig. 1, an embodiment of the present invention provides a power grid security monitoring system, where the system includes a remote background server 1, a regional server 2, and a node monitoring base station 3.

The node monitoring base stations 3 are installed at the nodes of the power grid and used for obtaining the safety conditions of the nodes of the power grid, the number of the node monitoring base stations 3 can be flexibly arranged according to the number of the nodes of the power grid, and the node monitoring base stations 3 are in communication connection with the regional server 2 so as to transmit monitoring data to the regional server 2.

The regional server 2 is in communication connection with the remote background server 1 and is used for performing data analysis on monitoring data transmitted by the node monitoring base station 3, acquiring the safety condition of a corresponding power grid node, and transmitting the acquired detection data and the safety condition of the power grid node to the remote background server 1.

The remote background server 1 is used for recording monitoring data and safety conditions of the power grid nodes and giving fault alarms.

According to the power grid safety monitoring system provided by the invention, the plurality of regional servers 2 are hung under the remote background server 1, the plurality of node monitoring base stations 3 are hung under each regional server 2, and the safety monitoring results of the plurality of node monitoring base stations 3 are subjected to data analysis through one regional server, so that the working pressure of the remote background is reduced, the efficiency and the accuracy of power grid safety monitoring can be improved, and the difficulty of power grid safety monitoring is reduced.

As an optional implementation manner of this embodiment, referring to fig. 2, the node monitoring base station 3 includes an electrical monitoring module 301, a physical monitoring module 302, a node communication module 303, and a base station control module 304.

The electrical property monitoring module 301 is configured to obtain electrical parameters of a power grid node.

The physical monitoring module 302 is configured to obtain a structural configuration of a power grid node.

The node communication module 303 is configured to establish remote communication between the node monitoring base station 3 and the regional server 2.

The base station control module 304 is configured to serve as a control core of the node monitoring base station 3.

The electrical monitoring module 301 and the physical monitoring module 302 are electrically connected to a base station control module 304, respectively, and the base station control module 304 is communicatively connected to the regional server 2 through a node communication module 303.

Referring to fig. 3, in the present embodiment, the electrical monitoring module 301 includes a voltage detection unit 3011, a current detection unit 3012 and an impedance detection unit 3013, where the voltage detection unit 3011, the current detection unit 3012 and the impedance detection unit 3013 are respectively connected to the power grid and are respectively electrically connected to the base station control module 304. The voltage detection unit 3011 is configured to detect voltage information of a power grid node; the current detection unit 3012 is configured to detect current information of a power grid node; the impedance detection unit 3013 is configured to detect impedance information of a power grid node.

For example, the physical monitoring module 302 may employ a rotating camera, which performs lens rotation and timed photographing according to a preset rotation period and a preset recording period, so as to obtain an image of a power grid node.

In the embodiment, the system acquires the electrical parameters and the structural configuration condition of the power grid node, and then takes the data of the operating state and the external structure of the power grid node as the reference data for safety monitoring, so that whether the power grid node normally operates and whether the external structure of the power grid node falls off, a case is damaged, a line is broken and the like can be effectively and accurately judged, and the reliability of the power grid safety monitoring system is improved.

As an optional implementation manner of this embodiment, the node monitoring base station 3 further includes a reserve power supply, the reserve power supply is electrically connected to the electrical monitoring module 301, the physical monitoring module 302, the node communication module 303, and the base station control module 304, respectively, and the reserve power supply is configured to provide electric energy for the operation of the node monitoring base station 3 when the power grid cannot supply power.

The reserve power supply may, for example, be any backup power supply configuration, for example a battery connected to the power grid, charged via the power grid and provided with a corresponding discharge device. When the power grid is powered off, the storage battery is automatically started to supply power to the electrical property monitoring module 301, the physical monitoring module 302, the node communication module 303 and the base station control module 304, so that normal operation of the node monitoring base station is ensured, the fault power grid node is maintained after the remote background server 1 receives fault information, and after the power grid operates normally again, the storage battery is powered off and is charged through the power grid.

In this embodiment, the node communication module 303 may adopt ZigBee communication or network communication. When the power grid node is in an area with poor network signals, the safety of the power grid node is greatly influenced by external factors due to complex terrain, and therefore ZigBee communication can be adopted as the node communication module 303, and smooth communication is guaranteed. On the other hand, for areas with better network signals, network communication is directly adopted, which is beneficial to improving the communication efficiency and ensuring the communication quality.

As an optional implementation manner of this embodiment, the area server 2 may be installed between a plurality of node monitoring base stations 3 hooked thereto, for example, one area server 2 is installed in the middle of the node monitoring base stations forming a ring distribution, or may be arranged according to a distribution structure of a secondary tree diagram, so as to improve communication efficiency.

Referring to fig. 4, the zone server 2 includes a data storage module 201, a data analysis module 202, a zone communication module 203, and a zone control module 204.

The data storage module 201 is configured to store the collation data.

The data analysis module 202 is configured to compare monitoring data and calibration data returned by the node monitoring base station, where the calibration data includes at least one of an appearance image of a power grid node and electrical parameter data of the power grid node during normal operation.

The area communication module 203 is used for establishing communication connection between an area server and a node monitoring base station or a remote background server.

The area control module 204 is used as a control core of the area server.

The data storage module 201 and the data analysis module 202 are respectively and electrically connected with the area control module 204, and the area control module 204 is respectively and communicatively connected with the node monitoring base station 3 and the remote background server 1 through the area communication module 203.

As an alternative implementation manner of this embodiment, referring to fig. 5, the remote background server 1 includes a data center 101, an industrial control center 102, an alarm module 103, and a communication module 104.

The data center 101 is configured to store power grid monitoring data and lower computer operation data.

The industrial control center 102 is used for realizing background control.

The alarm module 103 is used for prompting and alarming the fault information of the power grid node.

The communication module 104 is configured to establish communication between the remote background server and the regional server.

The data center 101 and the alarm module 103 are electrically connected to the industrial control center 102, and the industrial control center 102 is connected to the plurality of regional servers 2 through the communication module 104.

Illustratively, the alarm module 103 includes a display and a buzzer, and the display is used for displaying the location information and the fault information of the area server 2 and the node monitoring base station 3 corresponding to the faulty power grid node.

As an optional implementation manner of this embodiment, the area server 2 further includes a classification module, a first map establishing module, and a resource converting module.

The classification module is used for identifying the type of monitoring data transmitted back by the node monitoring base station and classifying the monitoring data according to the type of the monitoring data, wherein the type of the monitoring data comprises a power grid data type and a power grid info type. The power grid data type represents power grid data resources in the monitoring data and is used for expressing attribute contents of a single power grid node, such as various electrical parameters of numerical types, including current information, resistance information and the like; or a logical type string, for example, Y indicates that the breaker state is on, and N indicates that the breaker state is off. The power grid info type represents power grid information resources and is used for recording relevant information of power grid nodes, for example, 15 times of XX power grid node 9 is in a fault state and the like.

The first map establishing module is used for establishing a power grid safety knowledge map based on monitoring data and the type of the monitoring data, the power grid safety knowledge map comprises a data map, an info map and a knowledge map, the data map comprises power grid data, the info map comprises the power grid info data, and the knowledge map comprises the power grid knowledge data. The grid knowledge data can be obtained by deducing grid data and grid info data, and the grid knowledge data in the embodiment mainly refers to relevant safety knowledge data of grid nodes, including fault content, fault removal strategies and the like.

The resource conversion module is used for realizing mutual conversion among the power grid data, the power grid info data and the power grid knowledge data. The conversion can be mutual conversion between data in the same mode, for example, one power grid data is converted to obtain another power grid data; and the method can also be cross-modal interconversion, for example, converting one or more grid data into grid info data.

The area server 2 further comprises a security level assessment module, an encryption module and a marking module.

The security level assessment module is used for judging whether monitoring data to be sent to the remote background server 1 by the regional server 2 reaches a security level according to preset conditions, and the monitoring data to be sent to the remote background server by the regional server is called to-be-sent monitoring data. Illustratively, the security levels corresponding to different types of monitoring data contents are preset in the regional server, and when the security level of the monitoring data to be sent reaches a security level threshold preset by a user, the corresponding monitoring data to be sent needs to be encrypted and then sent, so that the confidential data is prevented from being leaked in the network transmission process. And for the monitoring data to be sent of which the security level does not reach the security level threshold preset by the user, the monitoring data to be sent can be directly sent to the remote background server 1.

The encryption module is used for encrypting the monitoring data to be sent when the security level evaluation module judges that the monitoring data to be sent reaches a security level threshold value preset by a user.

Illustratively, the encryption is specifically:

when the monitoring data to be transmitted only comprise power grid data, acquiring the power grid data transmitted to a remote background server by a regional server at the previous time through a data map, calculating the calculation cost of performing cross-mode conversion on the acquired power grid data, generating a key by taking the calculation cost result as a parameter of a key generation algorithm, and encrypting the monitoring data to be transmitted through the generated key;

when the to-be-transmitted detection data only comprises power grid info data, acquiring the power grid info data which is transmitted to a remote background server from a regional server at the previous time through an info map, calculating the calculation cost of performing cross-mode conversion on the acquired power grid info data, generating a key by taking the calculation cost result as a parameter of a key generation algorithm, and encrypting the to-be-transmitted monitoring data through the generated key;

when the to-be-transmitted detection data comprise power grid data and power grid info data, respectively acquiring the power grid data and the power grid info data which are transmitted to a remote background server from a region server at the previous time through a data map and an info map, respectively calculating the calculation cost for performing cross-mode conversion on the acquired power grid data and the power grid info data, combining the two calculation costs as parameters of a key generation algorithm to generate a key, encrypting the to-be-transmitted monitoring data through the generated key, and converting the encrypted to-be-transmitted monitoring data into encrypted monitoring data.

Illustratively, the calculation cost for performing cross-mode conversion on the acquired power grid data specifically refers to the calculation cost required for converting the power grid data into power grid info data; the calculation cost for performing cross-mode conversion on the acquired power grid info data specifically refers to the calculation cost required for converting the power grid info data into the power grid data. The key generation algorithm can adopt any one of key generation algorithms in the prior art according to actual requirements, and any one of key encryption algorithms can be used for encrypting the monitoring data to be transmitted through the generated key.

The marking module is used for marking the encrypted monitoring data differently according to the monitoring data types contained in the encrypted monitoring data, namely the marks are used for representing the monitoring data types contained in the encrypted monitoring data.

For the monitoring data to be sent with the security level reaching the security level threshold preset by the user, the encryption module encrypts the monitoring data and the marking module marks the monitoring data, and then the monitoring data can be sent to the remote background server 1. In this embodiment, the remote background server 1 further includes a second map establishing module and a decryption module.

The second map establishing module is used for establishing a power grid safety knowledge map according to monitoring data received by the remote background system 1, wherein the power grid safety knowledge map comprises a data map, an info map and a knowledge map.

The decryption module is used for identifying the received encrypted monitoring data mark to judge the monitoring data type contained in the encrypted monitoring data, acquiring historical power grid data and/or historical power grid info data from a power grid security knowledge graph according to the monitoring data type contained in the encrypted monitoring data, calculating the cross-mode conversion calculation cost of the historical power grid data and/or the historical power grid info data, generating a key by taking the calculation cost result as a parameter of a key generation algorithm, and decrypting the encrypted monitoring data through the generated key.

In this embodiment, the regional server 2 establishes a power grid security knowledge graph for the monitoring data collected by the node monitoring base station 3, so that the power grid node monitoring data is structured, and subsequent management and query are facilitated. Meanwhile, for monitoring data with high confidentiality requirements, the encryption module calculates the calculation cost required by cross-mode conversion of the monitoring data based on historical monitoring data sent to the remote background server 1, generates a key by taking the calculation cost as an input parameter of a key generation algorithm, and encrypts the monitoring data to be sent through the key. The remote background server 1 for receiving the encrypted monitoring data also acquires the same received historical monitoring data through the power grid security knowledge graph, calculates the calculation cost required by cross-mode conversion, generates a key by using the calculation cost as an input parameter of a key generation algorithm, decrypts the encrypted monitoring data through the key, and is difficult to decrypt under the condition that the key generation mode and the target mode are not clear, so that the security of network transmission of confidential monitoring data is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.