Multi-dimensional multi-mode communication system of power grid sensing equipment

Abstract

The embodiment of the invention discloses a multi-dimensional multi-mode communication system of power grid sensing equipment. The system comprises a central processing unit, a communication module, a data processing module and a storage module. The central processing unit is respectively connected with the communication module, the data processing module and the storage module; the communication module is provided with a plurality of communication channels, and the central processing unit sends data processed by the data processing module and / or data stored in the storage module to a far end through the plurality of communication channels according to a data request of the far end. According to the invention, a plurality of communication channels are arranged to be connected with the far end, so that the multi-channel and multi-dimensional transmission of the power grid data is realized, when one channel cannot transmit the data, the data can be transmitted through other channels, and the transmission success rate and the operation stability of the power grid are improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of multi-mode communication technology, and in particular, to a multi-dimensional multi-mode communication system for a power grid sensing device. Background Art

[0002] When the power grid company is preparing the power generation dispatch plan, it needs to grasp the data of each power station in real time and send the power grid data to the receiving end of the power grid company through the power grid sensing equipment of each power station.

[0003] However, for the power grid system, the geographical distribution of power stations is relatively scattered. In many cases, it is difficult to transmit data through a more reliable wired network, and data upload has to rely on wireless base stations or other means.

[0004] For data with high real-time requirements in the power grid system, due to the geographical location of the power station and the transmission method, it is very likely that the power grid data upload will fail, resulting in the data being unable to be submitted in a timely manner, and may even affect the normal operation of the power grid. Summary of the invention

[0005] The embodiment of the present application provides a multi-dimensional and multi-mode communication system for a power grid sensing device to improve the success rate of uploading power grid data and improve the stability of power grid operation.

[0006] The present application provides a multi-dimensional multi-mode communication system for a power grid sensing device, the system comprising:

[0007] Central processing unit, communication module, data processing module and storage module;

[0008] The central processing unit is connected to the communication module, the data processing module and the storage module respectively;

[0009] The communication module is provided with a plurality of communication channels, and the central processing unit sends the data processed by the data processing module and / or the data stored in the storage module to the remote end through the plurality of communication channels according to the data request of the remote end.

[0010] The technical solution of the embodiment of the present application is that the system includes a central processing unit, a communication module, a data processing module and a storage module; the central processing unit is connected to the communication module, the data processing module and the storage module respectively; the communication module is provided with multiple communication channels, and the central processing unit sends the data processed by the data processing module and / or the data stored in the storage module to the remote end through the multiple communication channels according to the data request of the remote end. By setting up multiple communication channels to connect with the remote end, the transmission of multi-channel and multi-dimensional power grid data is realized. When one of the channels cannot be delivered, it can also be delivered through other channels, which improves the success rate of transmission and the stability of power grid operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Schematic diagram of the multi-dimensional and multi-mode communication system structure of the power grid sensing device provided in this application. DETAILED DESCRIPTION

[0012] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only the parts related to the present application, rather than all structures, are shown in the accompanying drawings.

[0013] Figure 1 A schematic diagram of the structure of a multi-dimensional and multi-mode communication system for a power grid sensing device provided in this application, such as Figure 1 As shown, the multi-dimensional multi-mode communication system of the power grid sensing device provided in this embodiment may include: a central processing unit, a communication module, a data processing module and a storage module;

[0014] The central processing unit is connected to the communication module, the data processing module and the storage module respectively;

[0015] The communication module is provided with a plurality of communication channels, and the central processing unit sends the data processed by the data processing module and / or the data stored in the storage module to the remote end through the plurality of communication channels according to the data request of the remote end.

[0016] By setting up multiple communication channels and remote connections, multi-channel and multi-dimensional power grid data can be sent. When one channel cannot be delivered, it can also be delivered through other channels, which improves the success rate of transmission and the stability of power grid operation.

[0017] Among them, the communication module includes a receiving unit and a sending unit; the receiving unit and the sending unit are both connected to the multiple communication channels, the receiving unit is used to receive information sent by the remote control terminal to the local sensing device, and the sending unit is used to send the information of the local sensing device to the remote control terminal.

[0018] Specifically, the multiple communication channels include at least: channel one, channel two, channel three, channel four and channel five; channel one is a satellite communication channel, channel two is a mobile network private network channel, channel three is a mobile network public network channel, channel four is an Ethernet channel, and channel five is a digital interface channel.

[0019] It should be noted that the communication module communicates with the remote control terminal through channel one, channel two and channel three.

[0020] In addition, the system further comprises a safety protection module, and the safety protection module is connected to the central processing unit;

[0021] The security protection module includes an identity recognition unit, a verification unit, a TEE recognition unit, a virus recognition unit, a file detection unit and a two-way authentication unit.

[0022] The identity recognition unit is used to receive verification information sent by the perception node layer, wherein the verification information includes first identity credential information obtained by the perception node layer from a data request of the remote control terminal and a first hash value of the first identity credential information by the perception node layer;

[0023] The verification module is used to obtain second identity credential information matching the first identity credential information from the executable environment TEE, and authenticate the remote control terminal according to the first hash value of the first identity credential information and the second identity credential information;

[0024] The TEE unit is used to receive the first identity credential information sent by the identity recognition unit, and query according to the first identity credential information to obtain the second identity credential information matching the first identity credential information, and return the second identity credential information to the identity recognition module.

[0025] It should be noted that the perception node layer includes an MCU that supports hash hardware calculations and various sensors connected to it. Each sensor terminal node adopts a periodic working mode and is initially in a dormant state. Only the MCU's timer works. When the timer counts to the preset time, a timer interrupt event is triggered, waking up the MCU to enter the working mode. After the MCU is awakened, it controls the collection of sensor data and corresponding timestamps and location information of each sensor, and sends the data to its hardware unit that supports multiple hash algorithms for calculation.

[0026] The virus identification unit is used to identify whether the information data has virus risks through a virus identification program before transmitting the information data; and to determine whether the information data has been rewritten through a file detection unit and perform two-way authentication through a two-way authentication unit.

[0027] If the two-way authentication is successful and the transmitted information data does not contain viruses and has not been rewritten, the transmission will continue; if the two-way authentication fails, or the transmitted information data contains viruses or has been rewritten, the information data transmission will be refused.

[0028] The data processing module includes a data analysis unit, a data statistics unit and a data supervision unit; the data analysis unit is used to analyze the data obtained by the sensing device, and the analyzed data is classified and counted by the data statistics unit; the storage module is used to store the classified and counted data, and the data supervision unit is used to supervise the data to be stored in the storage module.

[0029] This system can provide high-speed, low-latency, and wide-coverage data connection and transmission between "sensing devices and control terminals", and can perform real-time scheduling of patrol terminals according to specific applications, solving the problems of low data volume in the monitoring system, inability to share information in various monitoring areas, and inability to respond to special situations in a timely manner. Block nodes of different categories can be implemented according to different regions and application scenarios. Each sensing device can serve different application service layers, that is, each sensing layer node covers a variety of sensing devices according to its different application scenarios, and can be shared and used through mobile phone interactive systems or front-end control devices according to actual applications, and the transmitted information data can be identified for virus risks, file rewriting judgments, and two-way authentication. Only after the two-way authentication is successful can the sensing information data be transmitted, and only information data without virus risks and that has not been rewritten is allowed to be transmitted, forming a unique and secure communication channel, which ensures the security of transmitted data from multiple angles.

[0030] In addition, the system also includes an alarm module, which is connected to the central processor; the alarm module is used to form early warning information from the data when the two-way authentication fails, and send the early warning information to the remote control terminal through the multiple channels. Before sending the early warning information, the alarm module uses the RSA algorithm to encrypt the early warning information.

[0031] Furthermore, the communication module includes an anti-interference unit; the anti-interference unit includes a signal detection unit, a sending auxiliary unit and a receiving auxiliary unit; the signal detection unit is used to detect whether an interference signal occurs.

[0032] The sending auxiliary unit is used to insert at least two auxiliary signal segments into the data signal in the wireless data frame to be transmitted, and divide the data signal into multiple data signal segments. When at least two auxiliary signal segments are multiple segments, each auxiliary signal segment is inserted into different positions of the data signal in a manner spaced from each other; the receiving auxiliary unit simultaneously starts the data demodulation link and the auxiliary anti-interference link based on the received wireless data frame.

[0033] The auxiliary anti-interference link does not demodulate the data signal in the wireless data frame, and the auxiliary anti-interference link updates the first synchronization-related parameters of the auxiliary anti-interference link based on at least one auxiliary signal segment; when the data demodulation link detects an interference signal, the first synchronization-related parameters are used to update the second synchronization-related parameters of the data demodulation link, and the updated second synchronization-related parameters are used to receive the next data signal segment.

[0034] It should be noted that the sending auxiliary unit is used to insert at least two auxiliary signal segments into the data signal in the wireless data frame to be transmitted, dividing the data signal into multiple data signal segments. When at least two auxiliary signal segments are multiple segments, each auxiliary signal segment is inserted into different positions of the data signal in a manner spaced from each other; the receiving auxiliary unit starts the data demodulation link and the auxiliary anti-interference link at the same time based on the received wireless data frame, wherein the auxiliary anti-interference link does not demodulate the data signal in the wireless data frame, and the auxiliary anti-interference link updates the first synchronization-related parameters of the auxiliary anti-interference link based on at least one auxiliary signal segment. When the data demodulation link detects an interference signal, the first synchronization-related parameters are used to update the second synchronization-related parameters of the data demodulation link, and the updated second synchronization-related parameters are used to receive the next data signal segment.

[0035] The first synchronization-related parameter and the second synchronization-related parameter include at least one of an estimated carrier frequency deviation, an estimated timing deviation, and an estimated instantaneous carrier phase. For example, the data demodulation link demodulates the first data signal segment in the wireless data frame. If it is found that there is an interference signal when demodulating the first data signal segment, the second synchronization-related parameter of the data demodulation link is reset with the first synchronization-related parameter before demodulating the second data signal segment, and the second data signal segment is demodulated with the reset second synchronization-related parameter. Among them, the auxiliary anti-interference link can update the first synchronization-related parameter based on the first auxiliary signal segment between the two. Even if there is an interference signal in the first data signal segment, the auxiliary anti-interference link corrects and updates the first synchronization-related parameter based on the known first auxiliary signal segment, and enables the data demodulation link to update the second synchronization-related parameter based on the updated first synchronization-related parameter, so that the data demodulation link receives the next second data signal segment based on the updated second synchronization-related parameter, thereby avoiding the interference signal from further affecting the second data signal segment, and effectively improving the anti-interference performance.

[0036] The sending auxiliary unit inserts at least two auxiliary signal segments, and the information characteristics of the auxiliary signal segments are known to the receiving end and the sending end. When the receiving end receives the wireless data frame, the receiving auxiliary unit starts the data demodulation link and the auxiliary anti-interference link, wherein the data demodulation link demodulates the data signal segment normally based on the second synchronization-related parameter, and the auxiliary anti-interference link does not demodulate the data signal segment in the wireless data frame, but updates the first synchronization-related parameter of the auxiliary anti-interference link based on the auxiliary signal segment. Since the information characteristics of the auxiliary signal segment are known to the receiving end and the sending end, there will be no deviation in the process of updating the first synchronization-related parameter based on the auxiliary signal segment, and the first synchronization-related parameter can be corrected in time. In this way, when the data demodulation link detects an interference signal, the data demodulation link updates the second synchronization-related parameter using the first synchronization-related parameter, thereby timely correcting and updating the second synchronization-related parameter that is affected by the interference signal and causes a deviation. In this case, even if the data demodulation link is interfered with when demodulating the current data signal segment, the next data signal segment can be correctly demodulated based on the updated second synchronization-related parameter without being interfered by the interference signal. What needs to be explained here is that the sequence, format, number of symbols and other information features of the auxiliary signal segments are all known to the transmitter and the receiver. For example, the transmitter inserts one or more auxiliary signal segments in the wireless data frame to be sent, and these auxiliary signal segments can be uniquely determined after the control frame header is generated. Different auxiliary signal segments can be the same or different. For example, each auxiliary signal segment can be the same sequence with a fixed format and content set by the user, or it can be generated according to a certain rule (such as pseudo-random sequence modulation). Alternatively, it can be the same or different sequence specified by the control frame header of each wireless data frame, or it can even be generated by modulating a part of the control frame header or the frame header check bits.

[0037] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A multi-dimensional multi-mode communication system for power grid sensing equipment, characterized in that: The system includes: a central processing unit, a communication module, a data processing module and a storage module; The central processing unit is connected to the communication module, the data processing module and the storage module respectively; The communication module is provided with a plurality of communication channels, and the central processor sends the data processed by the data processing module and / or the data stored in the storage module to the remote end through the plurality of communication channels according to the data request of the remote end.

2. The system according to claim 1, characterized in that The communication module includes a receiving unit and a sending unit; The receiving unit and the sending unit are both connected to the multiple communication channels. The receiving unit is used to receive information sent by a remote control terminal to a local sensing device, and the sending unit is used to send information of the local sensing device to the remote control terminal.

3. The system according to claim 1 or 2, characterized in that: The plurality of communication channels at least include: channel one, channel two, channel three, channel four and channel five; The channel one is a satellite communication channel, the channel two is a mobile network private network channel, the channel three is a mobile network public network channel, the channel four is an Ethernet channel, and the channel five is a digital interface channel.

4. The system according to claim 1, characterized in that The system further comprises a safety protection module, wherein the safety protection module is connected to the central processing unit; The security protection module includes an identity recognition unit, a verification unit, a TEE recognition unit, a virus recognition unit, a file detection unit and a two-way authentication unit.

5. The system according to claim 4, characterized in that The identity recognition unit is used to receive verification information sent by the perception node layer, wherein the verification information includes first identity credential information obtained by the perception node layer from a data request of the remote control terminal and a first hash value of the first identity credential information by the perception node layer; The verification module is used to obtain second identity credential information matching the first identity credential information from the executable environment TEE, and authenticate the remote control terminal according to the first hash value of the first identity credential information and the second identity credential information; The TEE unit is used to receive the first identity credential information sent by the identity recognition unit, and query according to the first identity credential information to obtain the second identity credential information matching the first identity credential information, and return the second identity credential information to the identity recognition module.

6. The system according to claim 4, characterized in that The virus identification unit is used to identify whether the information data has a virus risk through a virus identification program before transmitting the information data; and, determining whether the information data has been rewritten by the file detection unit, and performing two-way authentication by the two-way authentication unit; If the two-way authentication is successful and the transmitted information data does not contain viruses and has not been rewritten, the transmission will continue; If the two-way authentication fails, or the transmitted information data contains a virus or has been rewritten, the information data transmission will be refused.

7. The system according to claim 1, characterized in that The data processing module includes a data analysis unit, a data statistics unit and a data supervision unit; The data analysis unit is used to analyze the data obtained by the sensing device, and the analyzed data is classified and counted by the data statistics unit; The storage module is used to store classified and statistically analyzed data, and the data supervision unit is used to supervise the data to be stored in the storage module.

8. The system according to claim 6, characterized in that The system further comprises an alarm module, wherein the alarm module is connected to the central processing unit; The alarm module is used to convert the data when the two-way authentication fails into warning information, and send the warning information to the remote control terminal through the multiple channels.

9. The system according to claim 8, characterized in that Before sending the warning information, the alarm module uses the RSA algorithm to encrypt the warning information.

10. The system according to claim 1, characterized in that The communication module includes an anti-interference unit; The anti-interference unit includes a signal detection unit, a sending auxiliary unit and a receiving auxiliary unit; The signal detection unit is used to detect whether an interference signal occurs; The transmission auxiliary unit is used to insert at least two auxiliary signal segments into the data signal in the wireless data frame to be transmitted, so as to divide the data signal into a plurality of data signal segments, and in the case where the at least two auxiliary signal segments are multiple segments, each auxiliary signal segment is inserted into a different position of the data signal in a manner of being spaced apart from each other; The receiving auxiliary unit simultaneously starts a data demodulation link and an auxiliary anti-interference link based on the received wireless data frame; The auxiliary anti-interference link does not demodulate the data signal in the wireless data frame, and the auxiliary anti-interference link updates the first synchronization related parameter of the auxiliary anti-interference link based on at least one auxiliary signal segment; In the case where the data demodulation link detects an interference signal, the second synchronization-related parameters of the data demodulation link are updated using the first synchronization-related parameters, and the next data signal segment is received using the updated second synchronization-related parameters.

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