A secondary equipment online monitoring and intelligent diagnosis master substation model maintenance-free method

Abstract

The application discloses a kind of secondary equipment online monitoring and intelligent diagnosis master substation model maintenance-free method, and substation maintenance-free is completed according to the upgrade guide tool substation model configuration, one-key application generates full-station SMCD, and model update is informed to master station, and master station synchronously updates substation model change, and the synchronization of substation monitoring information model to master station is completed using the information self-description of substation expansion and reconstruction SMCD update signal and SMCD itself.The application can make master station automatically synchronize and update substation model change, realize the consistency of master substation equipment model, and at the same time, the model change of secondary equipment substation or newly connected secondary equipment substation is uploaded to control cloud, to ensure that OMS-control cloud-secondary equipment monitoring master station-secondary equipment substation upper and lower model remains consistent.

Description

Technical Field

[0001] This invention relates to the field of power system substation relay protection, specifically to a maintenance-free method for online monitoring and intelligent diagnosis of secondary equipment master-slave station models. Background Technology

[0002] The construction of relay protection support systems is one of the key tasks of the relay protection profession. The quality of the operation of the relay protection support system determines the reliability of information such as protection anomalies. Therefore, strengthening the construction, operation, and maintenance of the support system is a long-term task for the protection profession. However, during operation, support systems such as fault recorders and protection information substations often encounter problems such as information model errors and communication anomalies due to the implementation of renovation and expansion projects and the upgrading of old relay protection equipment. These issues affect the user experience of the support system and, more seriously, hinder the rapid assessment of power grid events.

[0003] Therefore, there is an urgent need to build a maintenance-free relay protection technology support system that requires minimal human intervention. This system should be able to automatically configure its functions for scenarios such as upgrades, expansions, and renovations of aging relay protection equipment. This is a crucial requirement for the development of such a support system. Currently, no existing support system can meet these requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a maintenance-free method for online monitoring and intelligent diagnosis of secondary equipment master and substation models. The master station can automatically synchronize and update changes in the substation model to achieve consistency between the master and substation equipment models.

[0005] To achieve the above objectives, the present invention employs the following technical solution:

[0006] A maintenance-free method for online monitoring and intelligent diagnosis of secondary equipment using a master-slave station model, including maintenance-free master station and maintenance-free slave station;

[0007] The substation model is configured without maintenance using the upgrade wizard tool:

[0008] Import the new system configuration file SCD, identify and display the changing device, organize the equipment ledger model, perform physical ID and equipment factory identification code entry operations, import IMCD for the changing device, import IVLD for the changing device, import or organize process layer fiber optic loops for the changing device, verify the model and generate the full-station SMCD with one click, and notify the main station to update the model.

[0009] When the main station is maintenance-free, based on changes in the substation model of the online monitoring and analysis of secondary equipment at the substation end, or when new secondary equipment substations are connected to the secondary equipment monitoring main station, the main station synchronously updates the changes in the substation model: the model built by the Operation Management System (OMS system) constructs the information warehouse of the substation, and uses the Substation's Smart Operation and Maintenance Online Monitoring Information Description File (SMCD) to update the signals and the information self-description of the SMCD itself to complete the synchronization of the substation monitoring information model to the main station.

[0010] Furthermore, each step of the subsite upgrade wizard provides model verification results and error prompts.

[0011] Furthermore, multiple operating modes are provided for the fiber optic loop of the process layer for the change device to import or sort the data. These operating modes include fiber optic table provided by the tag manufacturer, manual connection, and Excel spreadsheet import mode.

[0012] Furthermore, model validation provides compliance verification of the Device Monitoring Information Configuration Description File (IMCD) / Device Secondary Virtual Loop Description File (IVLD), version consistency verification, logical link configuration integrity verification, fiber optic loop integrity verification, and physical ID and factory identification code collection integrity verification.

[0013] Furthermore, the main station receives the substation's "data warehouse" primary and secondary models from the control cloud and automatically generates a three-level equipment tree monitoring screen that is consistent with the site: substation-primary equipment-secondary equipment. The main station automatically matches the secondary equipment model based on the physical ID of the IED equipment in the SMCD obtained from the substation.

[0014] If the main station receives more data from the control cloud than from the sub-station, the main station will not display the extra information, but will view it in the unmatched alarm information.

[0015] If the main station receives less data from the control cloud than from the sub-station, the main station displays the unmatched device information on the unmatched devices, and the sub-station information is stored in the database and marked as unmatched.

[0016] Furthermore, when there are changes to the on-site model at the plant, the main station is notified through an alarm mechanism. The main station provides two working modes for model entry into the database: automatic entry mode and manual confirmation mode.

[0017] When the master station receives a change in the model from the substation in automatic data entry mode, it presets a threshold time. If there is no model update signal within the threshold time, it will automatically enter the matching model into the database. If there is a new model update signal within the threshold time, the model will be entered into the database according to the SMCD file information obtained from the last model update signal.

[0018] When the master station receives a change in the model from the substation in the manual confirmation entry mode, it automatically matches the model and waits for manual confirmation before entering the model into the database. If a new model update signal is received during the waiting period, the model is entered into the database according to the SMCD file information obtained from the last model update signal before manual confirmation.

[0019] Furthermore, the synchronized visualization monitoring graphics between master and substations include single-line diagrams. The synchronization of the single-line diagrams of the entire station follows the CIME-G format, a power system graphical description specification. The master and substation synchronization of the main wiring single-line diagrams is performed simultaneously with the synchronous update of the master and substation models.

[0020] Furthermore, the steps for synchronizing the master and sub-station visual monitoring graphics include:

[0021] Each CIM-G file contains a G tag as the root tag, and Layer tags define layers. Each G tag contains one or more Layer tags to represent different layers. Each layer contains one or more primitives, including basic primitives, power grid primitives, and dynamic data primitives.

[0022] The master station monitoring system imports standard format CIM-G files to restore the same monitoring screen as the plant station. The various monitoring states on the graphical monitoring screen are referenced by the model object parameters of the CIM-G object, so that the master station can observe the same monitoring effect as the plant station.

[0023] Furthermore, basic primitives include basic graphic elements and static text elements. CIM-G defines basic graphic elements with the tags line, rect, roundrect, circle, ellipse, polyline, and polygon, and defines static text elements with the tag Text.

[0024] Power grid elements include busbars, circuit breakers, lines, isolating switches, grounding switches, generators, and main transformers. CIM-G defines power grid elements with labels such as Bus, CBreaker, ACLine, Disconnector, GroundDisconnector, Generator, and Transform.

[0025] Dynamic data elements include dynamic text elements and status elements. CIM-G defines dynamic text elements with the DText label and status elements with the State and Status labels. In the monitoring system, the Status element is used to display various status quantities.

[0026] Furthermore, the construction of an information warehouse includes:

[0027] When a new substation is connected, select the already issued OMS substation model for association, enter the key information of the substation, obtain the latest model file from the substation according to the IP address and port, parse and enter it into the database, and bind it with the secondary device issued by OMS according to the physical ID of the secondary device during the database entry.

[0028] The interaction between the master and slave stations depends on the substation OMSID and the secondary equipment OMSID. When there are substations and secondary equipment that are not associated with OMS, the system will display alarms indicating that the substation is not associated with the OMS substation and that the substation's secondary equipment is not associated with the OMS secondary equipment.

[0029] The advantages of this invention are as follows: It proposes a maintenance-free method for master-slave station models based on secondary equipment online monitoring and analysis master-slave stations and secondary equipment online monitoring and intelligent diagnosis substations. This method enables the master station to automatically update the substation model changes when there are changes in the secondary equipment substation model or when a new secondary equipment substation is connected to the secondary equipment monitoring master station, ensuring consistency between the master and substation equipment models. At the same time, the changes in the secondary equipment substation model or the model of the newly connected secondary equipment substation are sent to the control cloud, ensuring that the models of OMS, control cloud, secondary equipment monitoring master station, and secondary equipment substation remain consistent. Attached Figure Description

[0030] Figure 1 This is a schematic diagram illustrating the business logic of the monitoring system using CIM-G file format to transmit monitoring screens and display monitoring results from the master and substations in this invention. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] This embodiment discloses a maintenance-free method for online monitoring and intelligent diagnosis of secondary equipment master and substation models, including maintenance-free master station and maintenance-free substation.

[0033] Substation maintenance-free refers to the process where, during subsequent upgrades and expansions of substations with online monitoring and analysis substations for secondary equipment already in operation, substations can be upgraded without the need for on-site personnel from the manufacturer. The substation manufacturer provides an upgrade wizard tool, allowing maintenance personnel to complete the substation model configuration by following the wizard's steps. Substation maintenance-free configuration primarily relies on the substation upgrade and expansion system configuration SCD and substation construction process data. With the assistance of the upgrade wizard provided by the substation manufacturer, the substation model is built, and the system automatically notifies the master station to complete the maintenance-free configuration process.

[0034] "Maintenance-free master station" refers to a system where, during substation renovation, expansion, or new substation construction, when the online monitoring and analysis substation model for secondary equipment changes or new secondary equipment substations are connected to the master station, the manufacturer generally does not need to perform maintenance operations at the master station. The master station synchronously updates the substation model changes, ensuring consistency between the master and substation equipment models. This maintenance-free master station primarily relies on the model provided by the OMS system to build the substation's information warehouse and utilizes the SMCD update signals from substation renovation / expansion and the SMCD's own self-describing information to synchronize the substation monitoring information model to the master station.

[0035] The substation maintenance-free upgrade wizard includes the following steps:

[0036] Import the new system configuration file SCD, identify and display the changing device, organize the equipment ledger model, perform physical ID and equipment factory identification code entry operations, import IMCD for the changing device, import IVLD for the changing device, import or organize process layer fiber optic loops for the changing device, verify the model and generate the full-site SMCD with one click, and notify the master station to update the model.

[0037] The project created by the substation upgrade wizard must have a save function, allowing operators to log in to the system to perform upgrade configuration work; the project created by the substation upgrade wizard should allow rollback operations, and when rolling back to previous steps, the content replaced by subsequent steps should be automatically deleted.

[0038] Each step of the substation upgrade wizard provides model verification results and reminds operators of detailed error messages.

[0039] The upgrade wizard's "Import or Organize Process Layer Fiber Optic Loops for Changing Devices" should provide multiple operation modes based on the actual construction situation, such as fiber optic tables provided by the label manufacturer, manual connection, and Excel spreadsheet import mode. In Excel spreadsheet import mode, the upgrade wizard should be able to export the initial Excel spreadsheet format for operators to organize.

[0040] Model validation provides IMCD / IVLD compliance verification, version consistency verification, logical link configuration integrity verification, fiber optic loop integrity verification, and physical ID and factory identification code collection integrity verification.

[0041] Main site maintenance-free mechanism and requirements:

[0042] The main station receives the primary and secondary models of the substation's "data warehouse" from the control cloud and automatically generates a three-level equipment tree monitoring screen that is consistent with the field: substation-primary equipment-secondary equipment. The main station automatically matches the secondary equipment model based on the physical ID of the IED equipment in the SMCD obtained from the substation.

[0043] If the main station receives more data from the control cloud than from the substation (OMS system was maintained in advance or OMS system has excess data that has not been decommissioned), the main station will not display the excess information and will view it in the unmatched alarm information.

[0044] If the main station receives less data from the control cloud than from the sub-station (OMS system maintenance was later), the main station displays the unmatched device information in the unmatched devices, and the sub-station information is stored in the database and marked as unmatched.

[0045] When there are changes to the on-site model at the plant, the alarm mechanism will notify the main station. The main station provides two working modes for model entry into the database: automatic entry mode and manual confirmation mode.

[0046] When the master station receives a change in the model from the substation in automatic data entry mode, it waits for 10 minutes. If there is no model update signal, it automatically enters the matching model into the database. If a new model update signal is received within 10 minutes, the model is entered into the database according to the SMCD file information obtained from the last model update signal.

[0047] When the master station receives a change in the model from the substation in the manual confirmation entry mode, it automatically matches the model and waits for manual confirmation before entering the model into the database. If a new model update signal is received during the waiting period, the model is entered into the database according to the SMCD file information obtained from the last model update signal before manual confirmation.

[0048] The required synchronized visual monitoring graphics between master and slave stations only need to be a single-line diagram of the entire station; other interval or device-level visual monitoring screens are not required.

[0049] Synchronization of single-line diagrams between master and substations should follow the CIME-G format (Power System Graphical Description Specification, G Language). Simultaneously with the synchronization and updating of the master and substation models, master and substation synchronization of the main wiring single-line diagrams should be performed. The master and substation monitoring visualization graphical synchronization technology is as follows:

[0050] Each CIM-G file contains a root tag named G, and layers are defined by Layer tags. Each G tag can contain multiple Layer tags to represent different layers. Each layer can contain multiple primitives, which can be divided into the following types: 1) Basic primitives, including basic geometric primitives and static text elements; 2) Power grid primitives, including power grid object primitives such as buses, circuit breakers, and lines; 3) Dynamic data primitives, including dynamic text, status, etc.

[0051] CIM-G uses a series of tags such as line (straight line segment), rect (rectangle), roundrect (rounded rectangle), circle (circle), ellipse (ellipse), polyline (polyline), and polygon (polygon) to define common basic graphic elements; and uses the Text tag to define static text graphic elements.

[0052] CIM-G defines power grid objects using tags such as Bus, CBreaker, ACLine, Disconnector, GroundDisconnector, Generator, and Transform.

[0053] CIM-G uses the DText tag to define dynamic text elements, which can be used for dynamic data values, such as current and voltage measurements. CIM-G uses tags such as State and Status to define dynamic graphical elements. In monitoring systems, the Status element is mainly used to display various status quantities.

[0054] In the elements (DText and Status) that display dynamic data, the keyname attribute defines the dynamic data bound to the element. Its value is the IEC-61850 parameter address of the bound data, as shown in the example below: <status ff="文泉驿正黑" x="0" y="0" keyid="" tfr="rotate(90)" keyname="IB5041ARPIT / QG1XSWI1$ST$Pos$stVal" app="" id="2339" fs="12" devref="#elem_20191203111929249.icn.g:elem_20191203111929249" / >

[0055] The master station monitoring system imports standard-format CIM-G files to recreate the same monitoring screen as the plant station, eliminating differences in implementation schemes between different manufacturers. Each monitoring status on the graphical monitoring screen is referenced through CIM-G object model parameters, ensuring the master station observes the same monitoring effect as the plant station. The business logic for transmitting monitoring screens and displaying monitoring results from the master station to the substation using CIM-G file format is as follows: Figure 1 As shown.

[0056] When connecting a new substation, you can choose to associate it with an existing OMS substation model. After entering key information such as the substation voltage level, IP address, and port number, you can retrieve the latest model file from the substation based on the IP address and port, and then parse and import it into the database. During the import process, the secondary equipment will be bound to the secondary equipment issued by OMS based on the physical ID of the secondary equipment.

[0057] When the master station receives a configuration change alarm from the substation, it updates the substation model. Operators can choose to process it manually or automatically. In manual processing, operators can modify specific secondary equipment information in the updated model or choose whether to add it to the database. Automatic processing occurs when the master station receives the alarm but does not receive a new configuration change alarm within ten minutes and has not manually processed it; in this case, the model file is automatically retrieved, parsed, and all equipment is added to the database. Both manual and automatic processing, after the model is added to the database, associate it with the OMS model based on the physical ID of the secondary equipment and package the latest power grid model for upload to the control cloud, achieving model synchronization between the master station and the control cloud.

[0058] Since the maintenance-free function is mostly executed automatically, the model change process and specific changes are not visible. Therefore, each automatic model change records and saves the model used in the update and the model change time, allowing for easy viewing of the specific details of a particular model change. The interaction between the main and branch stations relies on the substation OMSID and the secondary equipment OMSID. When there are substations and secondary equipment not associated with the OMS, it will cause abnormal data transmission. The system will display alarms indicating that the substation is not associated with the OMS substation and that the substation's secondary equipment is not associated with the OMS secondary equipment, prompting system maintenance personnel to maintain the association between the system and the OMS model.

[0059] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A maintenance-free method for a master-slave station model of online monitoring and intelligent diagnosis of secondary equipment, characterized in that, This includes both maintenance-free main station and maintenance-free sub-stations; The substation model configuration is completed using the upgrade wizard tool, eliminating the need for maintenance. Import the new system configuration file SCD, identify and display the changing device, organize the equipment ledger model, perform physical ID and equipment factory identification code entry operations, import IMCD for the changing device, import IVLD for the changing device, import or organize process layer fiber optic loops for the changing device, verify the model and generate the full-station SMCD with one click, and notify the main station to update the model. The maintenance-free main station relies on changes in the substation model of the online monitoring and analysis of secondary equipment at the station end, or the connection of a new secondary equipment substation to the secondary equipment monitoring main station. When these changes occur, the main station synchronously updates the substation model: the OMS system provides a model to build the substation's information warehouse, and uses the substation's upgraded SMCD update signal and the SMCD's own information self-description to complete the synchronization of the substation monitoring information model to the main station.

2. The maintenance-free method for online monitoring and intelligent diagnosis of secondary equipment master-slave station model according to claim 1, characterized in that, Each step of the subsite upgrade wizard provides model verification results and error messages.

3. The maintenance-free method for online monitoring and intelligent diagnosis of secondary equipment master-slave station model according to claim 1, characterized in that, The system provides multiple operating modes for the fiber optic loop of the process layer for importing or sorting the change device. These operating modes include fiber optic table provided by the label manufacturer, manual connection, and Excel spreadsheet import mode.

4. The maintenance-free method for online monitoring and intelligent diagnosis of secondary equipment master-slave station model according to claim 1, characterized in that, The model verification provides IMCD / IVLD compliance verification, version consistency verification, logical link configuration integrity verification, fiber optic loop integrity verification, and physical ID and factory identification code collection integrity verification.

5. The maintenance-free method for online monitoring and intelligent diagnosis of secondary equipment master-slave station model according to claim 1, characterized in that, The main station receives the primary and secondary models of the substation's "data warehouse" from the control cloud and automatically generates a three-level equipment tree monitoring screen that is consistent with the field: substation-primary equipment-secondary equipment. The main station automatically matches the secondary equipment model based on the physical ID of the IED equipment in the SMCD obtained from the substation. If the main station receives more data from the control cloud than from the sub-station, the main station will not display the extra information, but will view it in the unmatched alarm information. If the main station receives less data from the control cloud than from the sub-station, the main station displays the unmatched device information on the unmatched devices, and the sub-station information is stored in the database and marked as unmatched.

6. The maintenance-free method for online monitoring and intelligent diagnosis of secondary equipment master-slave station model according to claim 1, characterized in that, When there are changes to the on-site model at the plant, the alarm mechanism will notify the main station. The main station provides two working modes for model entry into the database: automatic entry mode and manual confirmation mode. When the master station receives a change in the model from the substation in automatic data entry mode, it presets a threshold time. If there is no model update signal within the threshold time, it will automatically enter the matching model into the database. If there is a new model update signal within the threshold time, the model will be entered into the database according to the SMCD file information obtained from the last model update signal. When the master station receives a change in the model from the substation in the manual confirmation entry mode, it automatically matches the model and waits for manual confirmation before entering the model into the database. If a new model update signal is received during the waiting period, the model is entered into the database according to the SMCD file information obtained from the last model update signal before manual confirmation.

7. The maintenance-free method for online monitoring and intelligent diagnosis of secondary equipment master-slave station model according to claim 1, characterized in that, The synchronized visualization monitoring graphics between master and substations include single-line diagrams. The synchronization of the single-line diagrams of the entire station follows the CIME-G format, a power system graphical description specification. The master and substation synchronization of the main wiring single-line diagrams is performed simultaneously with the synchronous update of the master and substation models.

8. The maintenance-free method for online monitoring and intelligent diagnosis of secondary equipment master-slave station model according to claim 7, characterized in that, The steps for synchronizing the main and sub-site visual monitoring graphics include: Each CIM-G file contains a G tag as the root tag, and Layer tags define layers. Each G tag contains one or more Layer tags to represent different layers. Each layer contains one or more primitives, including basic primitives, power grid primitives, and dynamic data primitives. The master station monitoring system imports standard format CIM-G files to restore the same monitoring screen as the plant station. The various monitoring states on the graphical monitoring screen are referenced by the model object parameters of the CIM-G object, so that the master station can observe the same monitoring effect as the plant station.

9. The maintenance-free method for online monitoring and intelligent diagnosis of secondary equipment master-slave station model according to claim 8, characterized in that, The basic primitives include basic graphic elements and static text elements. CIM-G defines basic graphic elements with the tags line, rect, roundrect, circle, ellipse, polyline, and polygon, and defines static text elements with the tag Text. The power grid elements include buses, circuit breakers, lines, isolating switches, grounding switches, generators, and main transformers. CIM-G defines the power grid elements with the tags Bus, CBreaker, ACLine, Disconnector, GroundDisconnector, Generator, and Transform, respectively. The dynamic data primitives include dynamic text elements and status elements. CIM-G defines dynamic text elements with the DText label and status elements with the State and Status labels. In the monitoring system, the Status primitive is used to display various status quantities.

10. The maintenance-free method for online monitoring and intelligent diagnosis of secondary equipment master-slave station model according to claim 1, characterized in that, The construction of the information warehouse includes: When a new substation is connected, select the already issued OMS substation model for association, enter the key information of the substation, obtain the latest model file from the substation according to the IP address and port, parse and enter it into the database, and bind it with the secondary device issued by OMS according to the physical ID of the secondary device during the database entry. The interaction between the master and slave stations depends on the substation OMSID and the secondary equipment OMSID. When there are substations and secondary equipment that are not associated with OMS, the system will display alarms indicating that the substation is not associated with the OMS substation and that the substation's secondary equipment is not associated with the OMS secondary equipment.

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