Plant station monitoring information joint debugging method based on two-dimensional code transmission data

Abstract

The invention relates to the technical field of power dispatching, and discloses a plant station monitoring information joint debugging method based on two-dimensional code transmission data, which adopts a system comprising a portable joint debugging terminal, a two-dimensional code data transmission module and a secure access area joint debugging. The portable joint debugging terminal accesses the security access area joint debugging system background through the vpn, and the plant station can send a monitoring information joint debugging request to the security access area joint debugging system background; the two-dimensional code data transmission module is used for safely transmitting plant station remote signaling and telemetering data in a D5000 web in the III area to the safe access area in a one-way manner; and the security access area joint debugging system background can return a verification result, and finally generates a joint debugging acceptance report according to the joint debugging result. According to the invention, the monitoring information participating in verification is ensured to be generated by the action of primary equipment, the joint debugging process does not need to be participated by the personnel at the master station end in the whole process, the joint debugging personnel at the station end can autonomously complete the joint debugging acceptance of the monitoring information of the station through the system, the manpower and time cost are saved, and the construction and debugging efficiency of the station is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power dispatching, and more specifically to the field of joint debugging and acceptance of substation monitoring information, and particularly relates to a method for joint debugging of substation monitoring information based on two-dimensional code data transmission. Background Art

[0002] During the joint debugging and acceptance of substation monitoring information, it is required that on-site substation personnel trigger tele-signal and telemetry signals one by one on electrical equipment, and the main station personnel check the real-time and consistency of the corresponding signal uploads in the intelligent power grid dispatching system (such as D5000). When faced with a large number of distributed photovoltaic power plants, user substations access and substation transformation work, the frequency of joint debugging of monitoring information is high and the cycle is long. According to the existing manual joint debugging and acceptance mode, it takes several hours or even days for the main station and substation personnel to cooperate to complete the joint debugging, and it is easy to cause omissions and errors due to human reasons, leaving potential safety hazards for the power grid. During the peak period of access or transformation, one person at the main station needs to cooperate with multiple substations to carry out joint debugging work at the same time. Therefore, the main station often faces problems such as tight time, heavy tasks, and insufficient carrying capacity in the joint debugging work of monitoring information, which delays the progress of project construction. In addition, the acceptance process lacks accurate and detailed acceptance reports, making it difficult to trace problems in the later stage.

[0003] In the prior art, there are mainly two ways of joint debugging of substation monitoring information: manual point-to-point communication by phone and through an automatic point-to-point device; in the way of manual point-to-point communication by phone, on-site personnel apply signal quantities or analog quantities to the monitored measurement points one by one, and then inform the on-site tele-signal and telemetry quantities by phone. The main station personnel check the alarm window in the D5000 system in the secure area I of the main station to verify the consistency and real-time of data upload. This method does not require the deployment of additional joint debugging programs, but the joint debugging process requires long-term phone communication between the main station and substation personnel, resulting in low joint debugging efficiency and long acceptance process, and cannot meet the requirements of joint debugging of substation monitoring information. The method of joint debugging through an automatic point-to-point device requires the deployment of a joint debugging program on the server in the secure area I of the main station. In the first stage of this joint debugging process, signals need to be triggered from primary equipment and measurement and control devices to the in-station point-to-point device to complete in-station acceptance; in the second stage, the change of substation monitoring signals is simulated on the point-to-point device, and the automatic acceptance is realized by the joint debugging program deployed by the main station. Although the second stage of the joint debugging process takes a short time and has high efficiency, the joint debugging signals are all simulated, and the correctness of the entire data transmission link cannot be truly verified. On the other hand, when using the point-to-point device, multiple configuration modifications and device installation and debugging work need to be carried out between the main station and the substation. For the work with high frequency of joint debugging of monitoring information such as distributed photovoltaic power plants, user substations and substation transformation, the configuration modification and device installation and debugging process will consume a lot of time, resulting in the total time of joint debugging of monitoring information not meeting the requirements. According to the measurement of past joint debugging records, the average time-consuming of manual point-to-point for a single monitoring information is about 120 seconds, and the average time-consuming of automatic point-to-point is about 90 seconds.

[0004] CN112366818A discloses a method and system for automatic acceptance of monitoring information of intelligent substation, including: parameter configuration according to the acceptance process and inputting parameter files used in the acceptance process; static normative verification of parameter files; verification of consistency of substation configuration description files in parameter files to complete in-station acceptance of monitoring information; verification of consistency between telecontrol data gateway configuration description files in logarithmic files and actual configuration of telecontrol data gateways to complete dynamic verification of telecontrol data gateways; simulation of communication of all secondary equipment in substation control layer equipment, receiving signals forwarded by each monitoring point to complete acceptance of each monitoring point and obtain acceptance results. It can realize acceptance of substation telecontrol data gateways without relying on dispatching data network equipment and channels, and can batch simulate communication behaviors of secondary equipment in station control layer, and realize automatic operation of monitoring information with dispatching master station.

[0005] CN106451792A discloses a remote control point-to-point system and method for an intelligent substation, the system includes a dispatching master station, a remote motor, a station control layer switch, and a station backend; the devices are controlled by a point-to-point system control module, and the method collates the substation information stored in the dispatching center with the information in the substation, so that the dispatching center can correctly monitor the operating status of the substation in real time, and realize rapid point-to-point of the remote control system by importing a point table with DA information and simulating MMS messages for measurement, control and protection; it improves the automation and reliability of the substation point-to-point work, reduces labor input, saves resource costs, and improves the efficiency of construction and commissioning of intelligent substations.

[0006] CN108132664A discloses an automatic point-to-point method applicable to smart substations. The method is based on simplified modeling, and uses the point setting process of IEC61850 communication in the management system that communicates with the relay protection equipment to trigger the analog point-to-point internal process of the relay protection equipment in the station (the process was originally triggered when the analog point setting was operated through the device LCD interface), thereby realizing automatic point-to-point of all information. By using this method, the automatic point-to-point problem of switch quantity, analog quantity, event and other information can be solved at the same time under a single process, which plays a good role in improving the point-to-point efficiency of smart substations and reducing workload.

[0007] CN112701790A discloses a substation and master station intelligent joint debugging platform and a joint debugging method, including: carrying out platform deployment and applying it to the grid equipment monitoring information verification work of various existing new construction, renovation and expansion projects, analyzing the operation conditions during the trial operation, formulating standardized processes, management regulations, platform systems and standardized requirements for new monitoring information verification, and providing management basis for organizing, supervising, commanding, implementing information access and acceptance work. It mainly provides an intelligent diagnosis model for automatic verification of monitoring information and joint debugging acceptance problems, and develops a corresponding platform to meet the needs of less-attended cooperation of master station personnel and self-completion of signal access acceptance by substation personnel.

[0008] CN117439264A discloses an automatic acceptance system for dispatching master station substation monitoring information, which includes a configuration subsystem, an acceptance card generation subsystem, a communication subsystem and an automatic acceptance subsystem; the configuration subsystem is used to generate a monitoring information point table, and obtain the configuration from the dispatching master station database through the communication subsystem, and compare the information of remote signals, remote measurements and remote controls in the database with the monitoring information point table in sequence based on the point number, and generate a verification result; the acceptance card generation subsystem is used to automatically generate a remote signal acceptance card, a remote measurement acceptance card, a remote control acceptance card and a graphic element acceptance card; the automatic acceptance subsystem is used to complete remote signal automatic acceptance, remote measurement automatic acceptance, remote control automatic acceptance and graphic element quick acceptance according to the acceptance cards generated by the acceptance card generation subsystem and the monitoring information point table generated by the configuration subsystem. This system proposes an acceptance strategy for remote signals and remote measurements to form a closed-loop acceptance system with the automatic acceptance device at the substation end, realizing the automatic acceptance of remote signals and remote measurements.

[0009] CN117996956A discloses a substation point-to-point joint debugging method and system, which relates to the field of substation control technology, and includes the following steps: selecting the range of devices to be tested, accessing the MMS monitoring communication module, and detecting whether the communication link is normal; reading the files of the devices to be tested, parsing the files to generate an information library, and comparing the information of the standard model file with the information library; sending test information through an automatic test plan, sending virtual remote signal and remote measurement trigger conditions, and generating a test report. It realizes the automatic testing of substation measurement and control and protection devices, generates a test report for the test results, synchronizes and locates the problems existing in the test, reduces the workload of the test, realizes internal simulation testing before the point-to-point connection with the dispatching through the test system, reduces the dispatching point-to-point time, reduces the operation and maintenance cost, reduces the enterprise operation and maintenance cost, and saves manpower, material resources and financial resources.

[0010] CN118508601A discloses a substation monitoring information access inspection and acceptance system and method, belonging to the technical field of substation monitoring information access acceptance. The system includes an intelligent inspection subsystem and an automatic acceptance subsystem; the intelligent inspection subsystem is used to perform inspections on the substation monitoring system equipment in response to the inspection tasks of the inspection personnel and generate inspection reports; the automatic acceptance subsystem is used to respectively construct a simulated master station and a simulated substation through an automatic acceptance device, perform automatic acceptance on each substation to be accepted through the simulated master station, and perform automatic acceptance on the master station through the simulated substation. It realizes the automatic inspection of substation monitoring information, saves the time for manual query, analysis, and judgment, realizes the automatic acceptance and verification of the master station and each substation, saves labor costs, and has high efficiency.

[0011] After repeated experiments, the applicant found that there is still room for improvement in improving the joint debugging efficiency and shortening the joint debugging duration of monitoring information. Summary of the Invention

[0012] To solve the above problems, the purpose of the present invention is to disclose a method for joint debugging of substation monitoring information based on QR code data transmission, which is used to improve the joint debugging efficiency of monitoring information in substation access and transformation work and shorten the joint debugging duration of monitoring information; it is implemented by the following technical solutions.

[0013] A method for joint debugging of substation monitoring information based on QR code data transmission, characterized in that: it includes a joint debugging system, a portable joint debugging terminal, and a QR code encoding and decoding module. The personnel at the master station end issue a joint debugging task of monitoring information through the portable joint debugging terminal and import the corresponding monitoring information point table. The QR code encoding and decoding module is used to securely unidirectionally transmit the real-time telemetry and telecontrol data of the substation to the joint debugging system in the secure access area in the form of a QR code. The personnel at the substation end send a joint debugging request for monitoring information through the portable joint debugging terminal, and the background of the joint debugging system checks whether the joint debugging request for monitoring information sent by the substation passes the check according to the real-time telemetry and telecontrol data and the preset verification rules.

[0014] The above-mentioned method for joint debugging of substation monitoring information based on QR code data transmission is characterized in that: the portable joint debugging terminal is used to communicate with the background of the joint debugging system in the secure access area. The portable joint debugging terminal consists of three parts: a wireless communication module, a micro longitudinal encryption authentication device, and a debugging notebook. For the portable joint debugging terminal used by the master station, it also includes a high-definition serial camera. The portable joint debugging terminal ensures both the security of the communication process and the portability of use.

[0015] A method for joint debugging of substation monitoring information based on QR code data transmission is characterized in that: a QR code encoding and decoding module is used to transmit the real-time substation telemetry and telecontrol data in Zone III to the background of the joint debugging system in the secure access zone. The QR code encoding and decoding module consists of a QR code encoding sub-module and a QR code decoding sub-module. The QR code encoding sub-module is deployed in the computer in the secure Zone III of the master station and is used to obtain the real-time changes in substation telemetry and telecontrol data in D5000web in real time, and convert them into multiple frames of QR code pictures, which are displayed on the screen in real time and scrolled. Each frame of the QR code contains verification data to ensure the integrity of data transmission. The QR code decoding sub-module runs in the form of a front end in the master station portable terminal, and obtains the front-end page by accessing the joint debugging system in the secure access zone, and is used to parse the encoded QR code in the secure Zone III to obtain the real-time changes in substation telemetry and telecontrol data.

[0016] A method for joint debugging of substation monitoring information based on QR code data transmission is characterized in that: the joint debugging system includes: Permission management unit: used to manage user registration, login, access requests, and allocate user permissions to access and operate various pages; Monitoring information joint debugging task management unit: used to create, modify, and delete substation monitoring information joint debugging tasks, and export the substation table from the dispatching master station database and import it into the corresponding tasks; Real-time data update unit: used to receive the real-time changes in substation telemetry and telecontrol data sent by the master station portable terminal, and update the real-time database stored in the memory; Verification unit: used to receive the joint debugging request for monitoring information sent by the substation portable terminal. First, it verifies the user permissions of the joint debugging request, and then verifies the joint debugging request from multiple dimensions such as task name, substation name, data type, data point number, data status, consistency between the uploaded data and the real-time data, and the time stamp difference between the request time and the real-time data. For telemetry data, when the error is within the allowable range, the joint debugging is determined to be successful; when the error exceeds the allowable range, the joint debugging is determined to be failed. For telecontrol data, it strictly verifies whether the opening and closing are consistent. Then, it performs correlation verification based on the correlation between the data and other data within its interval, and finally saves and returns the verification result; Report generation unit: used to generate an unmodifiable pdf joint debugging test report, record each joint debugging acceptance request information in detail, and separately list the data with failed consistency verification and failed correlation verification, and perform statistical and quantitative evaluation.

[0017] This application has the following main beneficial technical effects: It overcomes the disadvantages of low efficiency and easy error in the traditional manual joint debugging method of monitoring information, ensures that the monitoring information participating in the verification is generated by the action of electrical equipment, the joint debugging process does not require the full participation of the master station personnel, and the substation-side joint debugging personnel can independently complete the joint debugging acceptance of substation monitoring information through this system, saving manpower and time costs, and improving the efficiency of substation construction and commissioning. Brief Description of the Drawings

[0018] Figure 1 This is the schematic diagram of the joint debugging system for substation monitoring information in this application.

[0019] Figure 2 This is the schematic diagram of the overall solution framework principle in this application.

[0020] Figure 3 This is the schematic diagram of the overall solution framework principle in this application.

[0021] Figure 4 This is the statistical table of the page response time of the B / S architecture in this application.

[0022] Figure 5 This is the schematic diagram of the channel construction in the main station security access area in this application.

[0023] Figure 6 This is the schematic diagram of the channel construction in the substation security access area in this application. Detailed Description of the Preferred Embodiment

[0024] In order to enable those skilled in the relevant art to better understand and implement this patent, the present application will be described in detail below with reference to the accompanying drawings of the specification.

[0025] Please refer to Figures 1 to 6 , a method for joint debugging of substation monitoring information based on two-dimensional code data transmission, characterized in that: it includes a joint debugging system, a portable joint debugging terminal, and a two-dimensional code encoding and decoding module. The personnel at the main station end issue joint debugging tasks for monitoring information through the portable joint debugging terminal and import the corresponding monitoring information point table. The two-dimensional code encoding and decoding module is used to securely and unidirectionally transmit the real-time remote signaling and telemetry data of the substation to the joint debugging system in the security access area in the form of two-dimensional codes. The personnel at the substation end send a joint debugging request for monitoring information through the portable joint debugging terminal, and the background of the joint debugging system verifies whether the joint debugging request for monitoring information sent by the substation passes the verification according to the real-time remote signaling and telemetry data and the preset verification rules.

[0026] The above-mentioned method for joint debugging of substation monitoring information based on two-dimensional code data transmission is characterized in that: the portable joint debugging terminal communicates with the background of the joint debugging system in the security access area. The portable joint debugging terminal consists of three parts: a wireless communication module, a micro longitudinal encryption authentication module, and a debugging notebook. For the portable joint debugging terminal used by the main station, it also includes a high-definition serial camera. The portable joint debugging terminal ensures both the security of the communication process and the portability of use.

[0027] A method for joint debugging of substation monitoring information based on two-dimensional code data transmission, characterized in that: a two-dimensional code encoding and decoding module is used to transmit the substation telemetry and telecontrol data in the security zone III to the background of the joint debugging system in the security access zone in real time. The two-dimensional code encoding and decoding module consists of a two-dimensional code encoding sub-module and a two-dimensional code decoding sub-module. The two-dimensional code encoding sub-module is deployed in the computer in the main station security zone III, and is used to obtain the substation telemetry and telecontrol change data in D5000web in real time, and convert it into multiple frames of two-dimensional code pictures, which are displayed on the screen in real time. Each frame of two-dimensional code contains verification data to ensure the integrity of data transmission. The two-dimensional code decoding sub-module runs in the form of a front end in the main station portable terminal, and obtains the front-end page by accessing the joint debugging system in the security access zone, and is used to parse the encoded two-dimensional code in zone III to obtain the real-time change data of substation telemetry and telecontrol.

[0028] A method for joint debugging of substation monitoring information based on two-dimensional code data transmission, characterized in that: the joint debugging system includes: Permission management unit: used to manage user registration, login, access requests, and allocate user permissions to access and operate various pages; Monitoring information joint debugging task management unit: used to create, modify, and delete substation monitoring information joint debugging tasks, and export the substation table from the dispatching main station database and import it into the corresponding tasks; Real-time data update unit: used to receive the real-time telemetry and telecontrol change data of the substation sent by the main station portable terminal, and update the data stored in the real-time database in the memory; Verification unit: used to receive the monitoring information joint debugging request sent by the substation portable terminal. First, verify the user permissions of the joint debugging request sender, and then verify the joint debugging request from multiple dimensions such as task name, substation name, data type, data point number, data status, consistency between uploaded data and real-time data, and time stamp difference between the request time and real-time data. For telemetry data, when the error is within the allowable range, the joint debugging is determined to be successful; when the error exceeds the allowable range, the joint debugging is determined to be failed. For telecontrol data, strictly verify whether the opening and closing are consistent. Then, perform correlation verification based on the correlation between the data and other data within its interval. Finally, save and return the verification result; Report generation unit: used to generate an unmodifiable pdf joint debugging test report, record each joint debugging acceptance request information in detail, and list separately the data with failed consistency verification and failed correlation verification for statistical and quantitative evaluation.

[0029] The system involved in this application includes a portable joint debugging terminal, a QR code data transmission module, and a background of the joint debugging system in the secure access area; the portable joint debugging terminal wirelessly accesses the background of the joint debugging system in the secure access area through a dedicated power VPN, and uses a micro longitudinal encryption authentication module to ensure the security of the communication process. The master station reads the real-time teleinformation and telemetry data of the substation obtained in the third security zone of the master station by parsing the encoded QR code through the portable joint debugging terminal. The substation sends a monitoring information joint debugging request to the background of the joint debugging system in the secure access area one by one according to the pre-imported monitoring information point table through the portable joint debugging terminal; the QR code data transmission module is used to unidirectionally and securely transmit the substation teleinformation and telemetry data in the D5000 web of the third security zone of the master station to the secure access area in real time. This module includes a data encoding sub-module deployed in the third security zone of the master station and a data decoding sub-module deployed in the background of the joint debugging system in the secure access area. The master station portable joint debugging terminal obtains the data decoding sub-module in the form of a B / S front-end access; the background of the joint debugging system in the secure access area verifies the monitoring information joint debugging request sent by the substation portable joint debugging terminal according to the preset verification rules and the decoded real-time data and returns the verification result, and finally generates a joint debugging acceptance report based on the joint debugging result.

[0030] A method for joint debugging of substation monitoring information based on QR code data transmission in this application uses a substation monitoring information joint debugging system. The substation monitoring information joint debugging system includes a system architecture, a portable joint debugging terminal, a verification database, and verification rules; the system architecture adopts a B / S architecture; the portable joint debugging terminal includes a communication method and a substation wireless communication terminal. The communication method adopts a secure access method based on a dedicated power wireless VPN and longitudinal encryption authentication, and the substation wireless communication terminal adopts a communication terminal integrated with a wireless communication module and micro longitudinal encryption; the data transmission of the verification database adopts an internal and external network data transmission and a data compression method based on gzip. The internal and external network data transmission unidirectionally and securely transmits the data in the third security zone of the master station to the secure access area with the camera recognition of the QR code as the intermediate method, and the data compression method adopts the gzip compression algorithm; the verification rules adopt a data matching algorithm and data relevance verification. Further, the data matching algorithm adopts the dictionary search method, and the data relevance verification performs a reasonable association verification based on other data within the interval where the data is located.

[0031] The B / S front-end architecture uses the vue framework to build the framework of the front-end code; the back-end service architecture uses the springboot framework to design the architecture of the back-end service code; to test the system, 10 substations in Jingmen are selected as samples. The substation personnel hold the joint debugging terminal to access the joint debugging system in the station, and calculate the response time of the background system to the joint debugging terminal access page. The experimental results are shown in Figure 4 ; After testing, the response time of the system access page based on the B / S architecture is less than 2 seconds.

[0032] According to the communication channel construction plan of the security access area, the wireless communication link of the master station security access area is debugged and installed. The wireless module accesses the security access area through the firewall and the longitudinal encryption authentication device. See Figure 5 and Figure 6 . Use the substation joint debugging terminal to randomly conduct 10 experiments. Each experiment sends a joint debugging request with different monitoring information, record the time-consuming from the sending of each joint debugging request to its reception by the background of the joint debugging system in the security access area, and monitor the number of malicious accesses to the background of the joint debugging system by external IPs in real time during the test. After inspection, when using the security access area as the communication channel from the joint debugging terminal to the background of the joint debugging system, the sending time-consuming of a single joint debugging request is less than 0.5 seconds, and the number of detected malicious accesses by external IPs is 0 times.

[0033] The main components of the integrated communication terminal architecture include a wireless module, an encryption card, a communication management module, interface management, and a power module. For the construction of the integrated communication terminal, the laptop of the substation-side joint debugging personnel accesses the background service of the joint debugging terminal through this integrated communication terminal device, and conducts statistics on the communication delay access between the constructed integrated communication terminal and the security access area. After inspection, the average communication time-consuming between the integrated communication terminal and the master station security access area is 0.37 seconds.

[0034] Use camera recognition of two-dimensional codes as the data transmission method from the intranet to the extranet. Based on the D5000 web interface in Zone III, design a real-time remote signaling, remote measurement data reading, and two-dimensional code encoding module. The backend uses the flask framework of Python to write routing functions. In the routing functions, call the D5000 web interface in Zone III to read the remote signaling and remote measurement change signals of the current substation, and call the gzip encoding function to encode the read string text. The frontend uses javascript to write the two-dimensional code encoding module, obtains the data to be transmitted by accessing the Python route through http, and then encodes the data into a two-dimensional code picture and presents it in the browser in html format.

[0035] The QR code decoding module also adopts the architecture of front-end and back-end separation, in which the QR code decoding function is implemented by javascript code, and the corresponding visual interface is written. The real-time data update interface is located in the back-end service for the QR code decoding module to call. The front-end QR code decoding module first obtains the real-time telesignaling and telemetry data of the plant station by parsing the QR code, and then calls the data update interface provided by the back-end application of the secure access area to update the data in the verification database. The camera recognizes the QR code to transmit data from the main station security zone III to the secure access zone. Five experiments are randomly conducted. In each experiment, the telesignaling and telemetry change information of the plant station 2 minutes ago is transmitted (randomly select non-intersecting 2 minutes to ensure that the time of the 5 experiments does not overlap with each other). The number of characters transmitted each time and the time taken from the beginning of encoding to the completion of decoding are counted. At the same time, the accuracy of each received data is counted. After experiments, the average data transmission rate using the camera to recognize the QR code as the data transmission method from the intranet to the extranet is 2500 bytes / second and the transmission accuracy is 100%.

[0036] A gzip compression module was written using Python. The module input parameter is the string to be compressed, and the output is a compressed string encoded in utf-8. The compression result is transmitted to the security access through the QR code encoding module. A gzip decompression module was written using the GZIPInputStream package that comes with the Java language. The input parameter is the compressed string, and the output is the decompressed string. The output result is transmitted to the verification database data to update the real-time data in the verification database. 1000 characters were randomly selected from the D5000 telesignaling and telemetry message, and 10 groups of experiments were conducted to calculate the compression time of the combined characters through the compression module. After verification, the compression time per thousand characters using the gzip algorithm as the message character compression method is less than 0.01 seconds.

[0037] According to the purpose and characteristics of the real-time database, the storage architecture of the real-time database in memory is designed, which consists of two parts: the telecontrol signal list and the telemetry list. Each item in the telecontrol signal list is stored in the form of a dictionary data structure with a unified format. The key of the telecontrol signal dictionary is a string combination of "task name + substation name + telecontrol signal name + point number + open / close status", and the value stored in the telecontrol signal dictionary includes information such as substation name, telecontrol signal name, point number, open / close status, change time, quality code, remarks, etc. Similarly, the telemetry list stores a set of dictionary data structures with a unified format. The key of the telemetry dictionary is a character set of "task name + substation name + telemetry name + point number + increment strategy", and the value stored in the telemetry dictionary includes information such as substation name, telemetry name, point number, increment strategy, telemetry value, change time, telemetry quality, etc. The telecontrol and telemetry information in the verification database is updated in real time by the two-dimensional code decoding module calling the interface opened by the verification database module. Each piece of data is set with a survival time, and after exceeding the survival time, the data is automatically deleted to ensure the real-time nature of the verification database and the rationality of memory occupation. Combining the characteristics of the real-time database stored in dictionary data, a verification data dictionary search algorithm process is designed. When searching the dictionary list, it is only necessary to accurately judge whether there is valid data in the dictionary according to the key obtained by splicing the data information. Referring to the process of manual joint debugging of substation monitoring information, matching rules for telecontrol and telemetry data are formulated respectively, including but not limited to task id, user permissions, data-owned substation, data point number, data status or measurement, etc. Each matching rule is in an "AND" relationship, and the judgment is made in a cascading manner until the last matching rule is satisfied, that is, it is judged that the consistency verification of this piece of data is successful. Different from the automatic point-to-point device, to ensure that the joint debugging data is truly collected by the measurement and control device, the verification unit will verify the rationality and relevance between telecontrol and telemetry during the interval of the data to be jointly debugged, and comprehensively judge whether this piece of data passes the joint debugging acceptance. To test the verification unit, 2 telecontrol signals and 5 telemetry signals of a substation are randomly selected as samples. The selected signals are all in the same interval. The D5000fes_sim tool is used to simulate the change information of the above 7 signals. The simulation process is divided into relevant simulation and non-relevant simulation. Correspondingly, 7 signal joint debugging requests are sent from the terminal respectively, and at the same time, the matching correct rate of the verification rule unit for the above signals is counted. Referring to the above method, 10 different intervals are selected for 10 groups of the above experiments. The statistical results show that the dictionary search method and the relevance verification method can accurately judge the data consistency and relevance, and the judgment accuracy rate is 100%.

[0038] After overall testing, the applicant separately deployed each part of the program on the intranet computers in the third security zone of the main station and the servers in the security access zone, and carried out joint debugging according to the system composition architecture. After the program deployment was completed, the team conducted actual monitoring information joint debugging tests on 5 transformed and expanded substations in Jingmen area during August 2023. The average time for joint debugging of a single monitoring information was 15.8 seconds, the longest was 18 seconds, the shortest was 14 seconds, and the other three data were 16, 14, and 17 seconds. Subsequently, for the period from September 2023 to December 2023, the team conducted trials in 7 cities and statistically analyzed the joint debugging of plant station monitoring information. After using the joint debugging system for plant station monitoring information, the joint debugging time was significantly reduced, and the joint debugging duration of a single plant station monitoring information has been shortened to 16.1 seconds. Compared with the manual joint debugging method, the time has been saved by 80%.

[0039] Through the research and development of this patent and project, the following main effects are obtained: (1) The acceptance efficiency is improved, the labor and time costs are reduced, and the joint debugging duration of monitoring information is greatly shortened. This can save a lot of time in the construction, transformation, and expansion projects of substations, and enable more timely commissioning, which is beneficial to the control of the overall project progress.

[0040] (2) Human errors are reduced. By automatically checking signals through the system, the influence of human factors can be reduced, avoiding omissions and errors caused by human reasons, and reducing the risk of power grid safety hazards.

[0041] (3) The independent acceptance ability of the plant station is enhanced. Through the monitoring information joint debugging system, the on-site personnel of the plant station can independently carry out acceptance work without waiting for the cooperation of the main station personnel, can timely discover problems and handle them, accelerate the debugging progress, and ensure the rapid and smooth progress of the project.

[0042] This application has the following main beneficial technical effects: It overcomes the disadvantages of low efficiency and easy errors of the traditional manual monitoring information joint debugging method, ensures that the monitoring information participating in the verification is all generated by the action of primary equipment, the joint debugging process does not require the full participation of the main station personnel, and the joint debugging personnel at the plant station end can independently complete the joint debugging acceptance of the plant station monitoring information through this system, saving labor and time costs, and improving the efficiency of plant station construction and debugging.

[0043] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations to the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A plant monitoring information joint debugging method based on two-dimensional code transmission data, characterized in that: It includes a joint debugging system, a portable joint debugging terminal, and a QR code encoding and decoding module. The main station personnel issue monitoring information joint debugging tasks through the portable joint debugging terminal and import the corresponding monitoring information point table. The QR code encoding and decoding module is used to transmit the real-time telesignaling and telemetry data of the plant station from Zone III to the joint debugging system in the secure access area in a one-way manner in the form of a QR code. The plant station personnel issue a monitoring information joint debugging request through the portable joint debugging terminal. The joint debugging system background verifies whether the monitoring information joint debugging request issued by the plant station passes the verification based on the real-time telesignaling and telemetry data and preset verification rules.

2. According to claim 1, a plant monitoring information joint debugging method based on two-dimensional code transmission data is characterized in that: A portable joint debugging terminal is used to communicate with the background of the joint debugging system in the security access area. The portable joint debugging terminal consists of three parts: a wireless communication module, a micro longitudinal encryption authentication device, and a debugging notebook. The portable joint debugging terminal used by the main station also includes a high-definition serial port camera. The portable joint debugging terminal ensures both the security of the communication process and the portability of use.

3. According to claim 1, a plant monitoring information joint debugging method based on two-dimensional code transmission data is characterized in that: The QR code encoding and decoding module is used to transmit the telesignaling and telemetering data of the plant station in Zone III to the background of the joint debugging system of the secure access zone in real time. The QR code encoding and decoding module consists of a QR code encoding submodule and a QR code decoding submodule. The QR code encoding submodule is deployed in the computer in Zone III to obtain the telesignaling and telemetering change data of the plant station in D5000web in real time, and convert it into multiple frames of QR code images, which are displayed on the screen in real time. Each frame of the QR code contains verification data to ensure the integrity of data transmission. The QR code decoding submodule runs in the portable terminal of the master station in the form of a front-end. The front-end page is obtained by accessing the joint debugging system of the secure access zone, and is used to parse the encoded QR code in Zone III to obtain the real-time change data of the telesignaling and telemetering of the plant station.

4. A plant monitoring information joint debugging method based on two-dimensional code transmission data according to claim 1, characterized in that: The joint debugging system comprises: Permission management unit: used to manage user registration, login, access requests, and assign user permissions to access and operate various pages; Monitoring information joint debugging task management unit: used to create, modify, and delete plant and station monitoring information joint debugging tasks, and export plant and station tables from the dispatch master station database and import them into corresponding tasks; Real-time data update unit: used to receive the plant station real-time telesignaling and telemetry change data sent by the master station portable terminal, and update the data stored in the real-time database in the memory; Verification unit: used to receive monitoring information joint debugging requests sent by plant and station portable terminals, and verify the joint debugging requests based on multiple dimensions such as task name, plant and station name, data name, consistency between uploaded data and real-time data, and timestamp difference between request time and real-time data. For telemetry data, when the error is within the allowable range, the joint debugging is judged to be successful, and when it exceeds the allowable error, the joint debugging is judged to have failed. For telesignal data, strictly verify whether the separation and combination are consistent, and finally save and return the verification results. In order to ensure that the telesignal and telemetry signals uploaded during the joint debugging process are obtained by collecting the status of electrical equipment by the on-site measurement and control device, the verification unit will perform data correlation verification based on the connection between the telesignal and telemetry signals of each interval equipment; Report generation unit: used to generate an unmodifiable PDF joint debugging test report, record each joint debugging acceptance request information in detail, and separately list the consistency check failure and relevance check failure data for statistical and quantitative evaluation.

5. A plant monitoring information joint debugging method based on two-dimensional code transmission data, characterized in that: The plant and station monitoring information coordination system was used, which includes system architecture, portable coordination terminal, verification database, and inspection rules. The system architecture adopts B / S architecture. The portable coordination terminal includes communication mode and plant and station wireless communication terminal. The communication mode adopts information transmission based on the secure access area. The plant and station wireless communication terminal adopts a communication terminal integrated with a wireless communication module and micro longitudinal encryption. The data update of the verification database adopts the main station intranet and extranet data transmission and data compression method. The intranet and extranet data transmission uses the QR code camera recognition as an intermediate method to transmit the main station security zone III data to the secure access area in a one-way secure manner. The data compression method adopts a gzip-based compression algorithm. The inspection rules adopt data matching algorithm and data correlation verification. Furthermore, the data matching algorithm adopts a dictionary search method. The data correlation verification is based on the rationality correlation verification of other data in the interval where the data is located.

6. A plant monitoring information joint debugging method based on two-dimensional code transmission data according to claim 5, characterized in that: The B / S front-end architecture uses the Vue framework to build the front-end code framework, and the back-end service architecture uses the Springboot framework; the system access page response time based on the B / S architecture is less than 2 seconds.

7. A plant monitoring information joint debugging method based on two-dimensional code transmission data according to claim 6, characterized in that: According to the communication channel construction plan for the secure access area, the wireless communication of the master station's secure access area is debugged and installed. The wireless module accesses the secure access area through the firewall and the vertical encryption authentication device. The time taken to send a single joint debugging request is less than 0.5 seconds.

8. A plant monitoring information joint debugging method based on two-dimensional code transmission data according to claim 7, characterized in that: The integrated communication terminal architecture mainly consists of a wireless module, an encryption card, a communication management module, an interface management module, and a power module. The average communication delay between the integrated communication terminal and the server interface of the main station security access area is less than 0.5 seconds.

9. A plant monitoring information joint debugging method based on two-dimensional code transmission data according to claim 8, characterized in that: The camera recognizes the QR code as the data transmission method from the intranet to the extranet. Based on the D5000web interface of Zone III, the real-time telesignaling, telemetry data reading and QR code encoding modules are written and designed in a front-end and back-end separation manner. The back-end uses Python's flask framework to write the routing function. The routing function calls the D5000web interface of Zone III to read the current plant station telesignaling and telemetry change signals, and calls the gzip encoding function to encode the read string text. The front-end uses javascript to write the QR code encoding module, accesses the Python routing through http to obtain the data to be transmitted, and then encodes the data into a QR code image. It is presented in the browser in HTML format; the QR code decoding module also adopts a front-end and back-end separated architecture. The QR code decoding function is implemented by javascript code, and is obtained by the main station joint debugging terminal calling the main station security access area back-end service; the real-time data update interface is located in the back-end service for the QR code decoding module to call. The front-end QR code decoding module first obtains the plant station real-time telesignaling and telemetry data by parsing the QR code read by the serial port camera, and then calls the data update interface provided by the back-end application of the security access area to update the data in the verification database. The average data transmission rate of the camera recognizing the QR code as the data transmission method from the intranet to the extranet is greater than 2500 bytes / second.

10. A plant monitoring information joint debugging method based on two-dimensional code transmission data according to claim 9, characterized in that: Use Python to write a gzip compression module. The module input parameter is the string to be compressed, and the output is a compressed string encoded in utf-8. The compression result is dynamically displayed in the browser page in the form of a web page through the QR code encoding module. Use the GZIPInputStream package that comes with the Java language to write a gzip decompression module. The input parameter is the compressed string, and the output is the decompressed string. The output result is transmitted to the verification database data to update the real-time data in the verification database. Randomly select a 1000-character length number from the D5000 telemetering message According to the data, the compression time for every thousand characters in an ordinary personal computer is less than 0.01 seconds; according to the purpose and characteristics of the real-time database, the designed real-time database storage architecture includes two parts: the telesignal list and the telemetering list. Each item in the telesignal list is stored in a dictionary data structure with a unified format. The key of the telesignal dictionary is a string combination of "task name + plant station name + telesignal name + point number + separation and combination status". The value storage content of the telesignal dictionary includes: plant station name, telesignal name, point number, separation and combination status, displacement time, quality code, and remarks. Similarly, the telemetering list is stored in a unified format. The key of the telemetry dictionary is a character set of "task name + plant name + telemetry name + point number + addition strategy". The value storage content of the telemetry dictionary includes: plant name, telemetry name, point number, addition strategy, telemetry value, change time, and telemetry quality information. The telesignal and telemetry information in the verification database are updated in real time by the internal and external network data transmission module calling the open interface of the verification database module. Each data is set with a survival time. After the survival time is exceeded, the data is automatically deleted to ensure the real-time and reasonable memory usage of the verification database. Combined with the characteristics of real-time database with dictionary data storage, the verification data dictionary search algorithm process is designed. When searching the dictionary list, it is only necessary to accurately judge whether there is valid data in the dictionary based on the character key obtained by splicing the data information. Referring to the process of manual joint debugging of plant and station monitoring information, matching rules for telesignal and telemetry data are formulated respectively, including but not limited to task id, user authority, plant to which the data belongs, data point number, data status or measurement, etc. There is an "and" relationship between each matching rule, and judgment is made in a cascade manner until the last matching rule is met, that is, the data consistency check is judged to be successful. Different from the automatic point-to-point device, in order to ensure that the joint debugging data are truly collected by the measurement and control device, the verification unit will verify the rationality and correlation between the telesignaling and telemetering within the interval of the joint debugging data. For example, if the status of the knife switch between the outgoing line of a certain interval and the busbar in the station is separated and not connected to the opposite side, it should be verified whether the measurement value of the circuit breaker on the outgoing line is zero.

Images