Intelligent operation and maintenance method for substation automation equipment

Abstract

The invention discloses an intelligent operation and maintenance method for substation automation equipment, and solves the problems that the substation automation equipment is in a black box operation state at present; the intelligent operation and maintenance management module is responsible for operation and maintenance service, operation and management service, data access and safety management and control of substation automation equipment, and operation and maintenance service of a gateway machine. The intelligent operation and maintenance management module and the intelligent operation and maintenance substation module call, modify and download an information point table through a gateway machine to carry out point table operation and maintenance, and carry out version control on an information point table version and a program version; a gateway machine log file is retrieved through a remote log retrieval function of the intelligent operation and maintenance management module to find problems; and the service agent module realizes penetration retrieval of operation and maintenance data, constructs an equipment layering and grading operation and maintenance mode, improves the checking accuracy of the information point table, and reduces the time required for troubleshooting and solving faults.

Description

Technical Field

[0001] The present invention belongs to the field of electric power technology, and more specifically, relates to a functional architecture design for intelligent operation and maintenance of substation automation equipment. Background Art

[0002] With the development of power grid and the transformation of the production system of State Grid Corporation, the requirements for lean management of secondary systems are constantly increasing. In order to adapt to the business needs of unmanned substation and remote centralized monitoring of equipment, higher requirements are put forward for the breadth of substation equipment information collection, the depth of equipment perception ability, and the fineness of equipment operation and maintenance management. At present, the automation equipment is in a "black box" operation state. The operation and maintenance personnel can only take emergency measures after the equipment is abnormal, lacking real-time status monitoring; the statistics of program and information point table ledger information are incomplete and updated in time, and defects cannot be handled in time; the current operation and maintenance adopts the substation on-site mode, and the substations are mostly in remote areas, and the round trip time is long, resulting in low operation and maintenance efficiency and long cycle; there are many manufacturers of substation automation equipment, the configuration tools are not unified, and the configuration is difficult. The deployment of remote operation and maintenance terminal equipment increases investment, and the operation and maintenance personnel also face the problem of difficult operation and project implementation; the automation technology is updated quickly, the device program iteration is fast, the control is difficult, and the equipment cannot achieve intelligent operation and maintenance. These problems have posed challenges to the intelligent operation and maintenance of substations. Summary of the invention

[0003] In view of the above defects of the prior art, the present invention aims to provide a method and system for intelligent operation and maintenance of substation automation equipment, which aims to realize refined management and intelligent operation and maintenance of equipment, thereby solving the problems that the operating conditions of equipment cannot be monitored, and the information point table proofreading is time-consuming and error-prone. By managing and controlling the information point table and program version, the correctness of the secondary equipment software version running in the station is guaranteed, and the hidden dangers of program defects can be effectively eliminated. When the substation has abnormal operation, the problem can be located more quickly through remote log review, which greatly shortens the time for problem locating compared with traditional processing methods.

[0004] The technical solution of the present invention is as follows:

[0005] A method for intelligent operation and maintenance of substation automation equipment, comprising the following steps:

[0006] ) The intelligent operation and maintenance management module is responsible for operation and maintenance business, operation management services, data access and security control. The operation and maintenance business includes operation monitoring, point meter operation and maintenance, version control, log access, plant station management and service agent. The operation management service includes version service, point meter service, monitoring service and audit service. The data access includes data access, digital signature verification and link management. The security control includes business security and data security.

[0007] 2) The gateway performs operation and maintenance services, including point-meter operation and maintenance and information collection. The operation status of the primary equipment is collected and processed through the gateway operation and maintenance service module, and the collected information is uploaded to the intelligent operation and maintenance management module for remote operation monitoring using the communication function of the gateway.

[0008] 3) The intelligent operation and maintenance management module and the intelligent operation and maintenance substation module perform point table operation and maintenance by calling, modifying, and downloading the information point table through the gateway machine, and perform version control on the information point table version and program version;

[0009] 4) In order to ensure that the intelligent operation and maintenance platform and the information point table on the substation side are always consistent and to locate the cause of the fault more quickly when a fault occurs in the substation operation, the remote log review function of the intelligent operation and maintenance management module is used to review the gateway machine log file to find the problem; the service agent module uses the remote review technology of the operation management protocol and the CMS protocol to achieve penetrating review of operation and maintenance data and build a hierarchical and graded equipment operation and maintenance model.

[0010] Furthermore, the operation monitoring described in step 1) monitors CPU utilization, memory utilization, disk information, temperature, communication link status, and key process status through the gateway machine; and performs working condition monitoring, information collection, and operation information evaluation on the operating equipment.

[0011] Furthermore, in step 2), there are three modes of point table operation and maintenance, namely, gateway machine deployment operation and maintenance service, remote desktop and high-reliability state grid enterprise standard mode. According to the hardware conditions of the gateway machines of different substations, different point table operation and maintenance methods are selected to convert and automatically check the information point table.

[0012] Furthermore, the version control in step 1) includes information version control and program version control. Information version control calibrates the difference in the information point table and restores the current version of the point table when an abnormality occurs. Program version control is used to quickly count the use scope of defective programs, build a program defect library, and eliminate program hidden dangers in time to avoid operation and maintenance problems caused by inconsistent versions between the intelligent operation and maintenance management module and the plant station test.

[0013] Furthermore, in step 4), the log files are divided into application logs and system logs. The key information of the gateway machine operation is recorded through the log files. Through the remote file access technology, the intelligent operation and maintenance platform can access the gateway machine log file function, and can also analyze and diagnose the recorded gateway machine operation information.

[0014] Furthermore, in step 4), the service proxy module is provided for the automation equipment and is composed of the device name + service name. The query service during remote access is based on a hierarchical query design. The intelligent operation and maintenance management module transmits the gateway machine program and upgrade program instructions through the program upgrade service provided by the gateway machine.

[0015] Furthermore, in step 1), the plant management includes user management, equipment management and certificate management. Through user management, the principle of separation of powers is established, including administrators, operators and auditors, to realize the management of the plant by different users. Through equipment management, the primary and secondary equipment automation equipment are managed in ledgers. Through certificate management, the application of digital certificates for the intelligent operation and maintenance management module, the issuance, verification and update of certificates imported into the intelligent operation and maintenance substation module are managed.

[0016] Furthermore, the gateway machine deployment operation and maintenance service mode is suitable for conventional stations and intelligent stations with good hardware conditions of the gateway machine. The operation and maintenance desktop provides a unified information point table operation interface and communicates with the gateway machine to realize information point table call, modification and download services. The gateway machine converts the operation and maintenance interface data into a unified format through the data conversion service, and then saves the unified format operation and maintenance data as a point table file in the standard E format, and then calls the compatible library to save the point table file in the standard E format as the actual information point table file of the gateway machine to realize information point table operation and maintenance;

[0017] The remote desktop mode is used for smart stations and conventional stations whose gateway hardware is old and not included in the renovation plan. The remote interface opens / closes VNC through the management channel to remotely access the smart operation and maintenance substation module interface. The smart operation and maintenance substation module runs the gateway configuration tool through the container deployed by itself to access and modify the information point table.

[0018] The high-reliability State Grid enterprise standard mode is suitable for high-reliability new generation substation gateway machines. The operation and maintenance desktop provides a unified information point table operation interface and communicates with the gateway machine to realize information point table calling, modification and downloading services. The management channel of this mode is that the gateway machine opens the management port to the operation and maintenance service, which can realize automatic point-to-point service.

[0019] Compared with the prior art, the above technical solution conceived by the present invention can achieve the following beneficial effects:

[0020] The present invention discloses an intelligent operation and maintenance method for substation automation equipment. A gateway machine set up on the station side performs information collection and point meter operation and maintenance services on primary equipment. The gateway machine uploads the collected equipment operation information to the intelligent operation and maintenance management module to realize remote operation of the operating equipment.

[0021] By uploading the collected information to the intelligent operation and maintenance management module through the gateway machine, remote monitoring of primary equipment can be achieved. Compared with the previous "black box" operation where repairs are carried out after a fault alarm occurs, real-time monitoring of the operating equipment can predict the occurrence of faults in advance based on the operating data, thereby avoiding fault alarms.

[0022] There are three types of information point table operation and maintenance, namely gateway machine deployment operation and maintenance service, remote desktop and high-reliability State Grid enterprise standard mode. Different modes are selected according to the degree of intelligence of substation equipment. Information point table operation and maintenance can realize automatic verification of information point tables, greatly improving verification efficiency and accuracy.

[0023] Version control is divided into information point table version control and program version control. The version information is serialized through the information point table, and the differences in the information point table are checked. When an abnormality occurs, the current version of the point table can be restored. Through the program version information, a program defect library is built, the scope of use of defective programs is quickly counted, and program risks are eliminated in a timely manner.

[0024] Log files are divided into application logs and system logs, which record key information about the operation of the gateway. When a fault occurs, the traditional method requires operation and maintenance personnel to arrive at the substation to connect to the gateway for troubleshooting. However, intelligent operation and maintenance can remotely query the gateway logs through the intelligent operation and maintenance management module to confirm the cause of the fault, greatly improving the efficiency of troubleshooting and resolution. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the architecture of intelligent operation and maintenance of substation automation equipment of the present invention;

[0026] Figure 2 It is a schematic diagram of operation monitoring of the present invention;

[0027] Figure 3 , Figure 4 , Figure 5 It is a schematic diagram of information point table operation and maintenance of the present invention;

[0028] Figure 6 It is a schematic diagram of the fault handling of the present invention;

[0029] Figure 7 It is a schematic diagram of version control of the information point table of the present invention;

[0030] Figure 8 , Fig. 9 , Fig.10 , Fig.11 It is a schematic diagram of an engineering example of the present invention; DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] The present invention relates to an intelligent operation and maintenance method for substation automation equipment, comprising the following steps:

[0033] The intelligent operation and maintenance system is mainly composed of intelligent operation and maintenance management module, intelligent operation and maintenance substation module and gateway machine, such as Figure 1 As shown, the intelligent operation and maintenance management module includes: operation and maintenance business (including operation monitoring, point meter operation and maintenance, version control, log retrieval, plant station management and service agency), operation and management services (including version services, point meter services, monitoring services and audit services), data access (including data access, digital signature verification and link management) and security control (including business security and data security); intelligent operation and maintenance substation module: the system consists of operation and maintenance business (including operation monitoring, point meter operation and maintenance, log diagnosis and service agency), operation and management services (including monitoring services, point meter services and audit services) and data access (including digital signature verification, data services and link management); gateway operation and maintenance services: consist of point meter operation and maintenance and information collection.

[0034] The operation status of primary equipment such as transformers, circuit breakers, and disconnectors is collected and processed through the gateway machine operation and maintenance service. The collected information is uploaded to the intelligent operation and maintenance management module using the communication function of the gateway machine to achieve the purpose of remote operation monitoring.

[0035] The intelligent operation and maintenance management module and the intelligent operation and maintenance substation module call, modify, and download information point tables through the gateway to perform point table operation and maintenance;

[0036] In order to ensure that the information point tables on the master station side and the substation side are always consistent, version control is performed on the information point table version and the program version; when a substation failure occurs during operation, in order to locate the cause of the failure more quickly, the remote log review function of the intelligent operation and maintenance management module is used to review the gateway machine log file to find the problem; the service agent uses the remote review technology of the operation management protocol and the CMS protocol to achieve penetrating review of operation and maintenance data, and builds a layered and hierarchical operation and maintenance model for equipment through this technology.

[0037] like Figure 2 As shown in the figure, the operation information of access equipment is collected through MMS, IEC104, SNMP, SYSLOG, and CMS protocols; the intelligent operation and maintenance management module remotely monitors the CPU utilization, memory utilization, disk information, temperature, communication link status, and key process status information through the gateway machine. The monitoring host and switch need to be connected to the intelligent operation and maintenance substation for monitoring and data forwarding. The monitoring host provides important data analysis and alarm functions for operation and maintenance personnel, while the switch provides key data transmission capabilities for the intelligent operation and maintenance substation. The security substation is located on the side of the intelligent operation and maintenance substation, which can record and store the operation data and status information of the equipment, and provide historical data query functions to facilitate subsequent data analysis and fault tracing.

[0038] Through real-time analysis of equipment operation data, the operating status of intelligent substation equipment can be evaluated and predicted, and abnormal operating conditions can be warned in advance. When abnormal data and operating conditions are found, the alarm system can be used to remind operation and maintenance personnel to carry out maintenance in a timely manner to prevent equipment failures that may cause greater damage to other equipment.

[0039] There are three different modes for information point table operation and maintenance: Mode 1: Gateway machine deployment operation and maintenance services such as Figure 3 As shown, Mode 2: Remote Desktop Figure 4 Model 3: High reliability state grid enterprise standard model Figure 5 , select different modes of information operation and maintenance services according to the hardware conditions on the substation plant side.

[0040] Mode 1 is suitable for conventional stations and intelligent stations with good hardware conditions of gateway machines. The operation and maintenance interface provides a unified information point table operation interface and communicates with the gateway machine to realize information point table call, modification and download services. The gateway machine converts the operation and maintenance interface data into a unified data format through the data conversion service, and then saves the unified operation and maintenance data as a point table file in the standard E format. Then, through the point table file conversion, the compatible library is called to save the point table file in the standard E format as the actual information point table file of the gateway machine; the operation and maintenance interface can also remotely access the intelligent operation and maintenance substation interface, and realize information point table operation and maintenance through the substation's operation and maintenance service. Since the hardware condition of the gateway machine in mode 1 is good, mode 1 can realize the information point table operation and maintenance of mode 2 through remote desktop.

[0041] Mode 2 is applicable to smart stations and conventional stations with outdated gateway hardware that are not included in the renovation plan for the time being. The remote interface opens / closes VNC through the management channel to remotely access the operation and maintenance services of the smart operation and maintenance substation module interface. The smart operation and maintenance substation module runs the gateway configuration tool through its own deployed container to perform configuration management communication services and access and modify the information point table. Compared with mode 1, mode 2 cannot communicate directly with the gateway, but requires the help of the smart operation and maintenance substation module to realize the operation and maintenance of the information point table.

[0042] Mode 3 is applicable to high-reliability new-generation substation gateways. The operation and maintenance interface provides a unified information point table operation interface and communicates with the gateway to realize information point table call, modification and download services; the operation and maintenance interface can realize automatic point-to-point service of the information point table through the gateway management channel and convert the operation and maintenance interface data into information point table data in the high-reliability State Grid enterprise standard format through the operation and maintenance service of the operation and maintenance substation; the centralized control master station and the dispatching master station can access the information point table through the business channel as needed. Compared with mode 1, mode 3 does not require complex data conversion of the operation and maintenance data, and can be directly saved as a gateway information point table file.

[0043] Version control is divided into information point table version control and program version control. By serializing the version information of the information point table and checking the differences in the information point table, the information point table can be checked, traced and restored, eliminating point table errors and defects caused by multiple equipment manufacturers and diverse point table files. When an exception occurs, the current version of the point table can be restored;

[0044] Propose a time-series control plan for program versions, automatically collect and remotely verify running program versions, realize program version records and intelligent analysis of family defects, promote the finalization rate of automation equipment program versions, improve the operation level of telecontrol equipment, and improve the reliability of power grid data. Build a program defect library, quickly count the scope of defective program use, and eliminate version program risks in a timely manner.

[0045] like Figure 6 As shown, the intelligent operation and maintenance platform imports the information point table version and program version, and compares them with the versions in the intelligent operation and maintenance substation and gateway machine respectively, and then returns the comparison results to the intelligent operation and maintenance platform. If the versions are consistent, the version is applied. If there is a difference between the versions on both sides, an early warning is issued to prompt the secondary devices with inconsistent software version information. At the same time, the hash value of each version is calculated based on the national secret SM3 algorithm, and the hash value is used as the version identifier for version management.

[0046] Log files are divided into application logs and system logs to record key information about the operation of the gateway. The intelligent operation and maintenance management module can access log files through remote operations, analyze and diagnose the file contents, and provide operation and maintenance personnel with the causes of equipment abnormalities.

[0047] Plant and station management includes user management, equipment management and certificate management. Through user management, the principle of separation of powers is established, including administrators, operators and auditors, to realize the management of plants and stations by different users. Through equipment management, ledger management is carried out for primary and secondary equipment automation equipment. Through certificate management, the application of digital certificates for the intelligent operation and maintenance management module, the issuance, verification and update of certificates imported into the intelligent operation and maintenance substation module are managed.

[0048] like Figure 7 As shown in the figure, in the traditional on-site operation and maintenance mode, the operation and maintenance personnel need to arrive at the substation site, issue an operation ticket and report to the master station before they can review the log files on the gateway machine. Then, the collected gateway machine operation information is fed back to the gateway machine manufacturer for problem location. Only then can the problem be found and solved, which takes a long time. The remote operation and maintenance mode can directly review the log information on the gateway machine through the intelligent operation and maintenance platform and feed it back to the manufacturer for problem location, which greatly shortens the time for problem location and improves the operation and maintenance efficiency.

[0049] Application examples:

[0050] like Figure 8As shown in the figure, the intelligent operation and maintenance platform monitors the operating status of the running equipment through the gateway machine on the plant side. The monitoring content includes memory usage, CPU load rate and disk information. Then, the monitored operating data is analyzed and scored through the established operating condition scoring system based on the expert knowledge base. When the data score exceeds the fault threshold we set, it will trigger the alarm system of the operation and maintenance system, reminding the operation and maintenance personnel to deal with it in time to ensure the stable operation of the substation.

[0051] like Fig. 9 As shown in the figure, the intelligent operation and maintenance platform will check the imported information point table version and program version with the versions of each substation and the gateway machine. If the versions on both sides are consistent, the match is successful. If there is a difference between the two versions, the match fails and an alarm is issued. At the same time, the comparison file difference items are uploaded to the intelligent operation and maintenance platform for reference. The hash value of each version of the gateway machine is calculated based on the national secret SM3 algorithm. Fig.10 As shown, the hash value of the version is managed as the version identifier. Since the hash value is unique, the management efficiency of each version information can be improved.

[0052] like Fig.11 The intelligent operation and maintenance platform retrieves the remote application log and system log files to the main station of the intelligent operation and maintenance platform, supports the analysis and display of log information, and highlights the abnormal content when the operation data of the gateway machine is abnormal. When the operation status of the running equipment is abnormal, the gateway machine log information can be analyzed in time. Through the remote access to the gateway machine operation information, it can assist the operation and maintenance personnel to locate and solve the problem faster.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced, and any modification or replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for intelligent operation and maintenance of substation automation equipment, characterized in that: The following steps are involved: 1) The intelligent operation and maintenance management module is responsible for operation and maintenance business, operation and management services, data access and security control. The operation and maintenance business includes operation monitoring, point and meter operation and maintenance, version control, log access, plant and station management and service agent. The operation and management service includes version service, point and meter service, monitoring service and audit service. The data access includes data access, digital signature verification and link management. The security control includes business security and data security. 2) The gateway machine provides operation and maintenance services, including point meter operation and maintenance and information collection; The operation status of the primary equipment is collected and processed through the gateway machine operation and maintenance service module, and the collected information is uploaded to the intelligent operation and maintenance management module for remote operation monitoring using the communication function of the gateway machine; 3) The intelligent operation and maintenance management module and the intelligent operation and maintenance substation module perform point table operation and maintenance by calling, modifying, and downloading the information point table through the gateway machine, and perform version control on the information point table version and program version; 4) To ensure that the intelligent operation and maintenance platform and the substation side information point table are always consistent and to locate the cause of the fault more quickly when a substation fails, the remote log access function of the intelligent operation and maintenance management module is used to access the gateway machine log file to find the problem; The service agent module uses the remote access technology of the operation management protocol and the CMS protocol to realize the penetrating access of operation and maintenance data and build a layered and graded operation and maintenance model for equipment.

2. A method for intelligent operation and maintenance of substation automation equipment according to claim 1, characterized in that: The operation monitoring described in step 1) monitors CPU utilization, memory utilization, disk information, temperature, communication link status, and key process status through the gateway machine; and performs working condition monitoring, information collection, and operation information evaluation on the operating equipment.

3. The intelligent operation and maintenance method of substation automation equipment according to claim 1, characterized in that: In step 2), there are three modes of point table operation and maintenance, namely, gateway machine deployment operation and maintenance service, remote desktop and high-reliability state grid enterprise standard mode. According to the hardware conditions of the gateway machines of different substations, different point table operation and maintenance methods are selected to convert and automatically check the information point table.

4. The intelligent operation and maintenance method of substation automation equipment according to claim 1, characterized in that: In step 1), version control includes information version control and program version control. Information version control calibrates the difference in information point table and restores the current version of the point table when an abnormality occurs. Program version control is used to quickly count the usage scope of defective programs, build a program defect library, and eliminate program hidden dangers in time to avoid operation and maintenance problems caused by inconsistent versions between the intelligent operation and maintenance management module and the plant station test.

5. The functional architecture design of intelligent operation and maintenance of substation automation equipment according to claim 1, characterized in that: In step 4), the log files are divided into application logs and system logs. The key information of the gateway machine operation is recorded in the log files. Through the remote file access technology, the intelligent operation and maintenance platform can access the gateway machine log file function, and can also analyze and diagnose the recorded gateway machine operation information.

6. A method for intelligent operation and maintenance of substation automation equipment according to claim 1, characterized in that: In step 4), the service proxy module is provided for the automation equipment and is composed of the device name + service name. The query service during remote access is based on the hierarchical query design. The intelligent operation and maintenance management module transmits the gateway machine program and upgrade program instructions through the program upgrade service provided by the gateway machine.

7. The intelligent operation and maintenance method of substation automation equipment according to claim 1, characterized in that: In step 1), plant and station management includes user management, equipment management and certificate management. Through user management, the principle of separation of powers is established, including administrators, operators and auditors, to realize the management of plants and stations by different users. Through equipment management, the primary and secondary equipment automation equipment are managed in ledgers. Through certificate management, the application of digital certificates for the intelligent operation and maintenance management module, the issuance, verification and update of certificates imported into the intelligent operation and maintenance substation module are managed.

8. A method for intelligent operation and maintenance of substation automation equipment according to claim 3, characterized in that: The gateway machine deployment operation and maintenance service mode is suitable for conventional stations and intelligent stations with good hardware conditions of the gateway machine. The operation and maintenance desktop provides a unified information point table operation interface and communicates with the gateway machine to realize information point table call, modification and download services. The gateway machine converts the operation and maintenance interface data into a unified format through the data conversion service, and then saves the unified format operation and maintenance data as a point table file in the standard E format, and then calls the compatible library to save the point table file in the standard E format as the actual information point table file of the gateway machine to realize information point table operation and maintenance; The remote desktop mode is used for smart stations and conventional stations whose gateway hardware is old and not included in the renovation plan. The remote interface opens / closes VNC through the management channel to remotely access the smart operation and maintenance substation module interface. The smart operation and maintenance substation module runs the gateway configuration tool through the container deployed by itself to access and modify the information point table. The high-reliability State Grid enterprise standard mode is suitable for high-reliability new generation substation gateway machines. The operation and maintenance desktop provides a unified information point table operation interface and communicates with the gateway machine to realize information point table calling, modification and downloading services. The management channel of this mode is that the gateway machine opens the management port to the operation and maintenance service, which can realize automatic point-to-point service.

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