CN111416866B - Data communication method for power Internet of things - Google Patents
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Abstract
The invention relates to a data communication method of an electric power Internet of things, which comprises the following steps: starting the power measurement and control module and establishing a mobile communication network; sequentially carrying out first authentication and second authentication of power data acquisition; the power measurement and control module collects and classifies each power data in real time; packaging each classified electric power data and transmitting the electric power data to a central controller; the central controller screens out normal values, abnormal values and fault values of all the electric power data, records the normal values, the abnormal values and the fault values in an internal memory, and outputs the abnormal values and the fault values to a fault display alarm unit for corresponding prompt; the central controller packages the normal value, the abnormal value and the fault value of each electric power data for the second time; and transmitting the electric power data subjected to secondary packaging to an electric power Internet of things platform for data analysis, and outputting a corresponding operation instruction. Compared with the prior art, the method and the device can ensure the accuracy of electric power data acquisition and the timeliness of fault processing, and simultaneously greatly reduce the calculation pressure of the electric power Internet of things platform.
Description
Technical Field
The invention relates to the technical field of data communication of power systems, in particular to a data communication method of an electric power internet of things.
Background
In recent years, the mobile internet has been developed at a high speed, and the requirements for security and stability of information transmission are higher and higher. For the power system, the perception of power is one of the important bases of power data interconnection, which undoubtedly puts higher demands on the stable transmission of power information. The power information transmission mostly adopts a satellite communication mode, but the satellite signal strength is weak, so that the satellite signal is very easily influenced by weather and building shielding, in an indoor or outdoor urban dense building area, the received satellite signal is seriously attenuated due to shielding of an obstacle, the information precision is greatly reduced, and the weak satellite signal cannot meet the huge power information transmission requirement. The mobile communication network is in sharp contrast to satellite communication, and mobile communication signals are better covered in urban areas with dense buildings or indoors, so that the mobile communication network can be used for power information transmission to make up for the coverage blind area of satellite signals.
At present, most of communication modes among networks are D2D (Device to Device, Device to Device direct connection) modes, and are widely applied to Internet of things devices such as shared bicycles, shared charge pal and the like, but methods for performing power data communication based on current mature power Internet of things products are few, and most of original Internet of things data transmission adopts a uniform packaging and transmission processing mode, namely data information is uniformly packaged and then directly transmitted, and classification processing is performed according to the data information after platform data of the Internet of things is received, although the mode can meet the communication requirements among most of Internet of things devices, the calculation requirements on a platform server terminal are high, the problem of overlarge terminal server occupancy rate is easily caused, once abnormal fault data are generated, the method often depends on the analysis processing of the platform, and corresponding fault alarming and fault operation cannot be performed in time, especially for electric power data, the communication requirement of the electric power data is real-time performance and accuracy, and the electric power data has the characteristic of distinct data information, different functions realized by different electric power measurement and control acquisition modules are different, and the respective acquired data quantity is not large. How to utilize the power characteristics to construct a real-time, stable and accurate power internet of things data communication method to realize data transmission between a power internet of things platform and a power measurement and control module is a problem to be solved urgently in the current power system data communication technology.
Disclosure of Invention
The invention aims to provide a data communication method of an electric power internet of things for overcoming the defects in the prior art.
The purpose of the invention can be realized by the following technical scheme: a data communication method of an electric power Internet of things is used for realizing data transmission between an electric power Internet of things platform and an electric power measurement and control module, and comprises the following steps:
s1, starting the power measurement and control module, outputting a reset instruction to the power measurement and control module, and then establishing a mobile communication network to realize communication connection between the power measurement and control module and the Internet of things platform;
s2, performing first authentication of power data acquisition based on the mobile communication card, if the authentication is passed, executing the step S3, otherwise, returning to the step S1;
s3, sending the address information and the MAC code of the power measurement and control module to the power Internet of things platform so as to carry out secondary authentication on power data acquisition, if the authentication is passed, executing the step S4, otherwise, returning to the step S1;
s4, collecting each electric power data in real time by the electric power measurement and control module, and classifying each electric power data collected in real time by the electric power measurement and control module;
s5, respectively packaging the classified power data, and then transmitting the power data to a central controller;
s6, preprocessing each classified and packaged electric power data by the central controller, and screening out normal values, abnormal values and fault values of each electric power data;
s7, the central controller records the normal value, the abnormal value and the fault value of each power data in the internal memory, and outputs each abnormal value and fault value to the fault display alarm unit for corresponding prompt;
s8, performing secondary packaging on the normal value, the abnormal value and the fault value of each power data by the central controller;
and S9, transmitting the secondarily packaged electric power data to the electric power Internet of things platform based on the mobile communication network established in the step S2, then performing data analysis on the secondarily packaged electric power data by the electric power Internet of things platform, and outputting a corresponding operation instruction.
Further, in the step S2, the card number and the built-in password of the mobile communication card are used to perform the first authentication of the power data acquisition.
Further, the step S3 specifically includes the following steps:
s31, sending the address information and the MAC code of the power measurement and control module to a power Internet of things platform in a message form;
s32, the electric power Internet of things platform counts the received messages to obtain the data mark length;
s33, comparing whether the data mark length is consistent with the preset counter information length, if so, passing the authentication, and executing the step S4, otherwise, returning to the step S1.
Further, the electric power measurement and control module comprises a temperature sensing device, a voltage detection device, a current detection device, an electric quantity metering device, a data communication device and a microprocessor, and the microprocessor is used for classifying and packaging each electric power data.
Further, in step S4, the feature labels are specifically performed according to the functional attributes of the power data, so as to implement power data classification.
Further, in the step S6, the central controller compares the classified and packaged power data according to preset corresponding thresholds of the power data to obtain normal values, abnormal values, and fault values of the power data through screening, where the corresponding thresholds of the power data include an optimal value, an early warning value, and a current limiting value, the normal value of the power data is within a corresponding range of the optimal value and the early warning value, the abnormal value of the power data is within a corresponding range of the early warning value and the current limiting value, and the fault value of the power data is greater than or equal to the corresponding current limiting value.
Further, the fault display alarm unit in step S7 includes an oscilloscope for displaying and recording fault waveforms and an alarm lamp, and when the power data is an abnormal value, the alarm lamp displays yellow;
when the electric power data is a fault value, the oscilloscope displays and records a fault waveform, and the alarm lamp displays red.
Further, the step S9 specifically includes the following steps:
s91, based on the mobile communication network established in the step S2, transmitting the secondarily packaged electric power data to an electric power Internet of things platform in a transparent transmission mode;
s92, performing CRC on the secondarily packaged power data by the power Internet of things platform, executing a step S93 after the CRC passes, and otherwise, returning to the step S91;
and S93, closing the transparent transmission mode, starting the common transmission mode, and performing data analysis on the secondarily packaged electric power data according to the feature marks of the electric power data to output corresponding operation instructions.
Compared with the prior art, the invention has the following advantages:
in the data communication process, a pre-auditing and pre-processing mechanism is adopted, the electric power data which are originally directly transmitted after being collected are converted into the electric power data which are classified according to functions and then packaged and transmitted to a central controller for preprocessing, and through data classification transmission and preprocessing of the central controller, the transmission pressure of data unified communication and the calculation pressure of an electric power Internet of things platform can be greatly reduced, and the electric power data transmission stability is improved.
The invention utilizes the central controller to screen out normal values, abnormal values and fault values from the power data in advance, and combines the fault display alarm unit, thereby being capable of finding instantaneous power faults and carrying out corresponding fault alarm and fault operation in time.
Before the electric power data are collected, the double authentication is carried out by utilizing the mobile communication card and the MAC code to ensure the accuracy of the collected data, in addition, after the communication of the electric power data is realized through the mobile communication, the correct transmission of the electric power data is further ensured by adopting CRC (cyclic redundancy check), and then a common mode is used for replacing a transparent transmission mode to carry out data transmission, so that the electric power data can be transmitted in many-to-many ways, and the defect of unidirectional transmission in the transparent transmission mode is overcome.
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FIG. 1 is a schematic flow diagram of the process of the present invention;
fig. 2 is a schematic diagram of an application process of the embodiment.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
As shown in fig. 1, a data communication method of an electric power internet of things includes the following steps: s1, starting the power measurement and control module, outputting a reset instruction to the power measurement and control module, and then establishing a mobile communication network to realize communication connection between the power measurement and control module and the Internet of things platform;
s2, performing first authentication of power data acquisition based on the mobile communication card, if the authentication is passed, executing the step S3, otherwise, returning to the step S1;
s3, sending the address information and the MAC code of the power measurement and control module to the power Internet of things platform for carrying out secondary authentication on power data acquisition, executing the step S4 if the authentication is passed, and otherwise, returning to the step S1;
s4, collecting each electric power data in real time by the electric power measurement and control module, and classifying each electric power data collected in real time by the electric power measurement and control module;
s5, respectively packaging the classified power data, and then transmitting the power data to a central controller;
s6, preprocessing each classified and packaged electric power data by the central controller, and screening out normal values, abnormal values and fault values of each electric power data;
s7, the central controller records the normal value, the abnormal value and the fault value of each power data in the internal memory, and outputs each abnormal value and fault value to the fault display alarm unit for corresponding prompt;
s8, the central controller packs the normal value, the abnormal value and the fault value of each electric power data for the second time;
and S9, transmitting the secondarily packaged electric power data to the electric power Internet of things platform based on the mobile communication network established in the step S2, then performing data analysis on the secondarily packaged electric power data by the electric power Internet of things platform, and outputting a corresponding operation instruction.
The invention provides a set of complete method for realizing data communication between an electric power Internet of things platform and an electric power measurement and control module based on a mobile communication network aiming at different electric power Internet of things equipment, a user can realize the lossless communication between the equipment board and the electric power Internet of things platform by using the electric power measurement and control equipment board and the communication method provided by the invention, and simultaneously, different types of electric power data can be processed in batches by utilizing the characteristic of classified block acquisition of sensors in the equipment board, the data is firstly subjected to data classification and packaging before being transmitted to a microprocessor from different measurement and control modules, and then is subjected to uniform secondary packaging after the microprocessor processes the data. The electric power data is subjected to pre-correction and secondary correction of the electric power Internet of things platform through the central controller, electric power hidden dangers are corrected in time, correction instructions are transmitted back to the electric power measurement and control equipment board again and act on a relay in the equipment board, so that current limiting and power failure operations are achieved, and accident data can be recorded through a storage device in the oscilloscope and the microprocessor. The scheme greatly reduces the calculation pressure of the terminal, increases the stability of data transmission, and when the equipment board goes wrong, the equipment board can be directly operated, so that the real-time performance and the safety are improved, and data basis can be provided for the tracing of accidents.
In practical application, as shown in fig. 2, the device is mainly divided into two parts: the method comprises the following steps of firstly, collecting communication data among hardware modules, and secondly, transmitting information among software communication, wherein the specific steps are as follows:
step 1: the power equipment board is started, and after the power Internet of things platform logs in, software applies for a temporary cache region;
step 2: the software timer starts to time and transmits an interface reset instruction to the power measurement and control module;
and step 3: the software sends an operation instruction to the communication module, and the communication module establishes communication connection;
and 4, step 4: using GPRS to realize the collected data authentication through the SIM card or the Internet of things card of each large communication operator;
and 5: the power measurement and control module sends received source address information and MAC codes to the power Internet of things platform, the power Internet of things platform counts received messages by using an Rx counter, whether the lengths of the messages and the counter information are consistent or not is compared, if the lengths of the messages and the counter information are not consistent, the reset function of the power measurement and control module is returned, reset operation is completed again, and if the lengths of the messages and the counter information are consistent, a corresponding measurement and control circuit board is found, which can be regarded as first-time data analysis;
step 6: setting a communication transmission mode (AP mode or STA mode) by software to complete the type selection of the transmission mode;
and 7: the software closes the transparent transmission mode and opens the common transmission mode (the transparent transmission mode is forbidden to improve the stability because the data transmission is received by the multi-pipeline transmission);
and 8: completing software configuration;
and step 9: a temperature sensing device, a voltage detection device, a current detection device, an electric quantity metering device and a communication module in the electric power measurement and control module collect electric power data and communication data, and respectively pack the electric power data and the communication data before data transmission of each device or module, and mark data codes;
step 10: data collected by each device in the power measurement and control module is transmitted to the central controller through a bus in the circuit board;
step 11: the central controller is characterized in that a processor in the central controller preprocesses flowing electric power information, compares real-time electric power information with a set optimal value, a set early warning value and a set current limiting value, records and transmits the electric power information between the optimal value and the set early warning value, and records data in a memory; correcting and limiting the numerical value between the early warning value and the current limiting value, then transmitting data, recording the data in a memory, and communicating the communication lamp to enable the communication lamp to become yellow; the current limiting and power off are carried out on the current limiting value and other numerical values, the communication lamp is communicated to be red, the data are recorded in the memory, the oscilloscope records the accident waveform, and additionally records the mutual state of all the components, the time duration peak value of the accident, the electric power accident wave before the accident and when the accident happens, and the like, so that the accident cause can be conveniently searched subsequently;
step 12: a processor in the central control unit performs secondary packaging on the processed data, and uniformly performs secondary packaging on all module packages on the basis that each module is packaged;
step 13: the data after secondary packaging enters an SIM card mobile communication network, the data in the central controller is transmitted to the power Internet of things platform through software, and CRC is carried out to ensure the correct transmission of the data;
step 14: after the whole data transmission is finished, the data packet is analyzed, identification codes of the micro-center processor, the communication module, the voltage detection device, the current detection device, the electric quantity metering device and the temperature sensing device corresponding to each module are found, and secondary analysis is carried out.
In summary, in the data transmission process, a pre-audit mechanism is added, and the information data which is originally directly transmitted after being collected is optimized to be that the transmission information is classified according to functions and modules, different data characteristics are marked for each module data, the data information of each module is respectively packaged and then is sent to a micro-center controller in a circuit board, so that the data of heterogeneous modules is subjected to distributed data preprocessing. The central controller compares the optimal value, the early warning value and the current limiting value input by the user with real-time data, and directly performs corresponding operation on the transient accident exceeding the early warning value and the current limiting value between the measurement and control circuit boards. Accident data is recorded through a memory in the central controller, waveforms are recorded through the oscilloscope, early warning and alarming are carried out through the communication lamp, and data support is provided for inquiring the cause of subsequent faults. And finally, packaging the normal information for the second time (uniformly packaging the information packet generated by each module) and transmitting the information to the power Internet of things platform through the mobile communication network to realize the second correction. Compared with the scheme that the operation is only completed by a relay firstly, the data is uploaded to a circuit Internet of things platform, and finally the command operation is analyzed and returned. The scheme has the advantages that the operation time when the fault occurs is shortened, the pressure when the data is uploaded is reduced, the circuit state when the accident occurs can be recorded, the alarm is reminded, the cause inquiry of the follow-up fault is realized, and the data support is provided.
In the software cooperation, the original dialing authentication is changed into the communication authentication of the mobile SIM card, and the original one-time MAC code authentication unified data transmission is changed into two-time analysis (firstly, MAC code authentication unified transmission is carried out, and then, secondary data analysis is carried out). Therefore, data can be transmitted in a classified mode, the calculation pressure of the power internet of things platform is reduced, and the calculation time is shortened. And the common mode transmission is used for replacing the transparent transmission mode, so that the data can be transmitted in many-to-many mode, and the defect of one-way transmission in the transparent transmission mode is overcome.
In addition, aiming at signal attenuation of a data transmission link, environmental influence such as weather, terrain, buildings and the like and unstable signals, the original data transmission of outdoor internet of things equipment is realized by converting satellite signal communication into mobile communication, so that the stability and the real-time property of power data transmission are met.
Claims (8)
1. The data communication method of the power Internet of things is used for realizing data transmission between a power Internet of things platform and a power measurement and control module, and comprises the following steps:
s1, starting the power measurement and control module, outputting a reset instruction to the power measurement and control module, and then establishing a mobile communication network to realize communication connection between the power measurement and control module and the Internet of things platform;
s2, performing first authentication of power data acquisition based on the mobile communication card, if the authentication is passed, executing the step S3, otherwise, returning to the step S1;
s3, sending the address information and the MAC code of the power measurement and control module to the power Internet of things platform for carrying out secondary authentication on power data acquisition, executing the step S4 if the authentication is passed, and otherwise, returning to the step S1;
s4, collecting each electric power data in real time by the electric power measurement and control module, and classifying each electric power data collected in real time by the electric power measurement and control module;
s5, respectively packaging the classified power data, and then transmitting the power data to a central controller;
s6, preprocessing each classified and packaged electric power data by the central controller, and screening out normal values, abnormal values and fault values of each electric power data;
s7, the central controller records the normal value, the abnormal value and the fault value of each power data in the internal memory, and outputs each abnormal value and fault value to the fault display alarm unit for corresponding prompt;
s8, the central controller packs the normal value, the abnormal value and the fault value of each electric power data for the second time;
and S9, transmitting the secondarily packaged electric power data to the electric power Internet of things platform based on the mobile communication network established in the step S2, then performing data analysis on the secondarily packaged electric power data by the electric power Internet of things platform, and outputting a corresponding operation instruction.
2. The data communication method of the internet of things for electric power of claim 1, wherein the step S2 is to perform the first authentication of electric power data acquisition by using a card number and a built-in password of a mobile communication card.
3. The data communication method of the internet of things for electric power of claim 1, wherein the step S3 specifically comprises the following steps:
s31, sending the address information and the MAC code of the power measurement and control module to a power Internet of things platform in a message form;
s32, the electric power Internet of things platform counts the received messages to obtain the data mark length;
s33, comparing whether the data mark length is consistent with the preset counter information length, if so, passing the authentication, and executing the step S4, otherwise, returning to the step S1.
4. The data communication method of the internet of things for the electric power according to claim 1, wherein the electric power measurement and control module comprises a temperature sensing device, a voltage detection device, a current detection device, an electric quantity metering device, a data communication device and a microprocessor, and the microprocessor is used for classifying and packaging each electric power data.
5. The power internet of things data communication method according to claim 4, wherein in the step S4, the feature labels are specifically performed according to the functional attributes of the power data, so as to implement power data classification.
6. The method of claim 1, wherein in step S6, the central controller compares the classified and packaged power data according to preset corresponding thresholds of the power data to obtain normal values, abnormal values, and fault values of the power data through screening, wherein the corresponding thresholds of the power data include an optimal value, an early warning value, and a current limiting value, the normal values of the power data are within corresponding ranges of the optimal value and the early warning value, the abnormal values of the power data are within corresponding ranges of the early warning value and the current limiting value, and the fault values of the power data are greater than or equal to corresponding current limiting values.
7. The data communication method of the internet of things for electric power of claim 6, wherein the fault display alarm unit in the step S7 comprises an oscilloscope and an alarm lamp, wherein the oscilloscope is used for displaying and recording fault waveforms, and the alarm lamp is displayed in yellow when the electric power data is an abnormal value;
when the electric power data is a fault value, the oscilloscope displays and records a fault waveform, and the alarm lamp displays red.
8. The electric power internet of things data communication method according to claim 5, wherein the step S9 specifically comprises the following steps:
s91, based on the mobile communication network established in the step S2, transmitting the secondarily packaged electric power data to an electric power Internet of things platform in a transparent transmission mode;
s92, the power Internet of things platform conducts CRC (cyclic redundancy check) on the secondarily packaged power data, after the CRC passes, the step S93 is executed, and if not, the step S91 is returned;
and S93, closing the transparent transmission mode, starting the common transmission mode, and performing data analysis on the secondarily packaged power data according to the feature marks of the power data to output corresponding operation instructions.
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| CN112000982A (en) * | 2020-07-31 | 2020-11-27 | 青岛海尔科技有限公司 | Method and device for processing user application data |
| CN112256774B (en) * | 2020-09-27 | 2024-04-26 | 深圳供电局有限公司 | Power data processing method, device, computer equipment and storage medium |
| CN113268754A (en) * | 2021-05-24 | 2021-08-17 | 合肥远康信息技术有限公司 | Intelligent power Internet of things data fusion platform |
| CN115576512B (en) * | 2022-10-24 | 2023-07-25 | 威海市天罡仪表股份有限公司 | Electronic display device simulating mechanical display and data storage method thereof |
| CN115665218B (en) * | 2022-12-28 | 2023-04-25 | 南方电网数字电网研究院有限公司 | Remote control method and system for Internet of things equipment and related equipment |
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