Power simulation modeling method and system based on model source searching and mapping

Abstract

The invention discloses an electric power simulation modeling method and system based on model source searching and mapping. The method comprises the following steps: dividing different simulation model categories for a simulated object according to the functional characteristics of the simulated object, establishing a model system hierarchy table, and setting a simulation uniform code identifier; establishing a unified identification mapping table of equipment identification and a unified identification mapping table of signal identification of each platform of the simulation system and the service system; the method comprises the following steps: acquiring simulation objects from a real-time system, analyzing ledger information of each simulation object through a modeling tool, generating model data of the simulation objects, matching corresponding data for different simulation objects, and establishing a standardized equipment model containing operation logic; and instantiating the standardized equipment model to generate a simulated equipment model table, and automatically matching the simulated equipment model table with a real-time system. According to the method based on model source searching and mapping, the simulation model can be automatically constructed, and the method is used for improving the simulation modeling efficiency and accuracy of a training simulation system, especially a centralized control station and a transformer substation.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to a power simulation modeling method and system based on model sourcing and mapping, which is applicable to training simulation systems such as substation training simulation, centralized control station training simulation, dispatcher training simulation and monitor training simulation. Background Art

[0002] Substation operation and maintenance monitoring is the core business of power grid enterprises. Substations are key nodes of the power grid. The full perception and effective control of the operating status of the main and auxiliary equipment of substations are directly related to the safety and efficient operation of the power grid. At present, most of the company's teams use the extension of dispatching terminals to carry out main equipment monitoring. 81.2% of the teams have no auxiliary equipment monitoring means, and the equipment status cannot be controlled in real time, which has shortcomings. The operation and maintenance monitoring profession needs to build a new generation of centralized control systems to improve the informatization level of the teams and meet the needs of comprehensive equipment monitoring. The large-scale construction of centralized control systems, the change of monitoring modes, and the integration of a large number of new technologies and new functions make it impossible for the monitoring personnel of the centralized control station to grasp the use of the centralized control system, the monitoring and analysis of the equipment in a timely manner. The job operation skills of the power system operation monitoring personnel are one of the important factors affecting the safety and reliability of the power system operation. The operation of the power system is not allowed to be carried out at will, and accidents rarely occur, making it difficult for the operating personnel to be fully trained in the normal operation and accident handling of the power system. Once an accident occurs, it is often caused by improper handling, resulting in the expansion of the accident. Therefore, the construction of a training simulation system is particularly important.

[0003] Substation training simulation is generally only for substation training. In order to improve the training effect, one or several typical substation simulation models are usually established in the training simulation system, which can be selected during training, and strive to cover the typical structures of various substations in the user's power grid. Compared with dispatcher training simulation, substation training simulation simulates primary and secondary equipment and automation systems more carefully and the simulation granularity is finer, because dispatcher training simulation focuses on the entire power grid situation, which belongs to the macro-level simulation. Generally, only the power grid needs to be modeled, and its own regularity is also strong; substation training simulation focuses on the operation monitoring, control operation and patrol operation and maintenance of specific primary and secondary equipment and auxiliary and auxiliary control equipment, which belongs to the micro-level simulation. Therefore, in simulation modeling, in addition to modeling the power grid where the substation is located, it is generally necessary to fine-tune the modeling of primary and secondary equipment and auxiliary and auxiliary control equipment in the substation. The large number of equipment with huge differences in the substation, especially the main and auxiliary secondary equipment and panel cabinet accessories, and the intricate physical and electrical connections of the station equipment, have brought great difficulties to the large-scale simulation modeling and simulation realization of substations.

[0004] The centralized control system has the characteristics of both the centralized monitoring business of the dispatching system and the substation monitoring system. The simulation requirements for the primary and secondary systems of the centralized control station training simulation are consistent with those of the substation training simulation, and the simulation modeling ideas are basically the same. However, it generally requires the establishment of all substation models (including transmission equipment and primary and secondary equipment in the station) in the monitoring area according to the actual power grid. This requires consideration of not only the connection between equipment within the station, but also the connection between stations. Therefore, compared with the substation training simulation, the modeling workload is larger and more complicated.

[0005] As a training simulation, training simulation has its own unique requirements and characteristics in both modeling and simulation methods. From the perspective of modeling methods, emphasis is placed on the realism of the simulation process and simulation results, requiring that the response is as close to real-time and complete as possible, and that the accuracy of the model is minimal; from the perspective of simulation methods, the constructed simulation environment should be based on people, and through various experimental operations and feelings performed by people, people can have a deep understanding of the simulation environment, operate in the simulation environment, and master relevant skills.

[0006] In the design and development of training simulation systems, the ledgers and static parameters of primary equipment, secondary equipment and auxiliary equipment in real-time systems such as substation integrated automation systems, centralized control station centralized monitoring systems, dispatching control systems, and existing systems in business centers are generally used to the greatest extent possible to reduce the workload of modeling and engineering maintenance. However, due to the different personnel and business focuses of each system, each business system will not establish a large and comprehensive ledger information, power grid model, equipment model, static parameters and other data or records of primary and secondary equipment and auxiliary equipment. The simulation system needs to start from the models and principles of primary and secondary equipment and primary and secondary systems, and conduct integrated simulation of primary equipment, secondary equipment, auxiliary equipment, transmission system, secondary system, integrated automation system and industrial control system. Therefore, the large number and large differences of primary and secondary equipment and auxiliary equipment, especially secondary equipment on site, bring huge challenges to simulation modeling, and the difficulty of simulation is also obvious.

[0007] In the prior art, the invention patent with announcement number CN 103353902 B proposes a "method for constructing a simulation model of secondary equipment in a power system". The method is to expand the association relationship between the internal attributes of the secondary equipment simulation model in accordance with the IEC61850 standard format, and then complete the instantiation of the secondary equipment model in a drawing manner. However, the method described in the patent scheme is to model the simulated secondary equipment, without mentioning the primary equipment and other equipment, nor how the simulation model is associated and mapped with the IEC61970 model of the master station system. As is well known, the IEC61850 and IEC61970 standards successively issued by the 57th Technical Committee of the International Electrotechnical Commission (IECTC57) are two international standards for different fields. Among them, IEC61850 is mainly used in the automation system of smart substations, providing a general standardized framework to support communication and interoperability between power equipment of different brands and types, while IEC61970 focuses on the management and automation of power systems, including common information models, etc., for describing power grid models and achieving interoperability. It provides standardized data models and communication interfaces for dispatch centers and energy management systems (EMS). Therefore, in essence, the method described in the patent actually refers to the IEC61850 specification and adds some extended attributes suitable for training simulation in the process of modeling the secondary equipment of the training simulation substation, but does not mention the modeling of the primary equipment of the substation, nor does it mention the interaction, mapping or sharing relationship or method between the established simulation model and the real-time system and the business middle station. It cannot solve the problem of effective sharing and full utilization of equipment models between the simulation system, real-time system and business middle station, nor can it solve the problem of complex and heavy workload of modeling primary and secondary equipment, auxiliary equipment, especially secondary equipment.

[0008] In the prior art, the invention patent with the announcement number CN 112541251 B discloses "a method and system for automatic simulation modeling of substations based on CIM model". The Common Information Model (CIM) is an abstract model that describes all the main objects of the power enterprise and represents the power system resources with object classes and attributes and the relationships between them. By defining a common language (i.e., syntax and semantics) based on CIM, applications or systems can access common data and exchange information without relying on the internal representation of information to achieve integration between systems. The common information model is the core of the entire protocol of the IEC61970 series of standards. In the invention patent CN 112541251 B "A method and system for automatic simulation modeling of substations based on CIM model", the CIM model is parsed and various types of data models related to the substation are screened according to certain rules. The substation hardware equipment model data obtained after parsing and the topological relationship between the substation equipment are stored in the database, and then the attribute information of the equipment is obtained and saved to the substation protection equipment comparison signal list data file. Then, the generated comparison signal list data file is split into a series of substation protection equipment similar output comparison signal model files according to the keywords set by the substation protection equipment comparison signal splitting rules. Then, according to the substation simulation requirements, the substation protection equipment similar output comparison signal model files are merged to generate a complete and effective substation protection comparison signal model. Finally, the substation protection comparison signal models of different intervals and types under the same substation equipment are merged to generate a general online information mapping data model data file. In layman's terms, it is to parse the CIM model file on the master station side, extract the primary equipment information and parameters such as busbar, transformer, line, capacitor, etc., and then associate the primary equipment signal model. At the same time, according to certain rules (of course, this rule is configurable, which may be configured according to the substation relay protection design specifications, or according to the actual situation on site or user needs, such as a 110kV line is configured with a set of protection, the protection model is XXX, and the 110kV line is configured with two sets of protection and defines the types of main one and main two protections), match and generate the corresponding secondary equipment (mainly relay protection equipment), and match the corresponding signal model of the secondary equipment, and finally generate a general online information mapping data model data file. This process simplifies the process of modeling primary and secondary equipment of substations in the simulation system. However, once the comparison rules (including but not limited to configuration files) are determined, they cannot be changed during the parsing and generation process, or the same comparison rules are used when parsing multiple plants and stations, resulting in the configuration of the simulation models of multiple plants and stations being actually the same. Even if there are more plants and stations and more equipment, the same simulation model is still used (that is, what the patent calls universal), which cannot meet the needs of refined simulation modeling (generally speaking, the manufacturer, model and version of the protection equipment of each substation are different, so the action logic and measurement signals will also be very different).Although the technical solution described in the patent can reduce the technical difficulty of building a substation simulation model to a certain extent and save the time cost of model building, it actually sacrifices the accuracy, authenticity and correctness of the simulation. For example, the method described in the patent is not practical when performing 1:1 proportional simulation modeling, and when performing more sophisticated training simulation modeling, the solution cannot reflect good adaptability. The patent also does not mention how the established simulation model can be linked with the real-time system and the model in the business center. Summary of the invention

[0009] Purpose of the invention: In view of the shortcomings of the prior art, the present invention provides an electric power simulation modeling method and system based on model sourcing and mapping. The purpose is to improve the high requirements for large-scale simulation modeling efficiency, modeling accuracy, and modeling granularity of substation equipment in various training simulation systems (including but not limited to centralized control station training simulation, integrated control training simulation) through a general modeling method that covers a wider range, involves more systems, and has stronger modeling adaptability, so as to make large-scale equipment-oriented refined simulation modeling possible in such training simulation systems.

[0010] Technical solution: In the first aspect, a power simulation modeling method based on model sourcing and mapping includes the following steps:

[0011] According to the functional characteristics of the simulated object, it is divided into different simulation model categories, and the types are distinguished under each category, the subtypes are distinguished under each type, and the components are distinguished under each subtype. A model system hierarchy table is established, and a simulation unified code identification is established for each type of equipment;

[0012] Establish a unified identification mapping table for equipment identification of each platform of the simulation system and the business system, and a unified identification mapping table for signal identification of each platform of the simulation system and the business system. Each mapping table records the mapping relationship between the simulation unified code identification in the model system hierarchy table and the code identification of each platform of the business system for equipment / measurement point;

[0013] Acquire simulation objects from the real-time system, analyze the ledger information of each simulation object through a modeling tool, generate model data of the simulation object, match corresponding data to different simulation objects according to the mapping relationship described in the device identification unified identification mapping table and the signal identification unified identification mapping table, and establish a standardized device model containing operation logic;

[0014] After the standardized device model is instantiated, a simulated device model table is generated. Based on the simulated device model table, it is automatically matched with the real-time system, the relationship between devices is analyzed, and maintenance is automatically performed.

[0015] Furthermore, the model system hierarchy table includes a hierarchical model system from model category, type, subtype, to subcategory / mechanism or component, wherein the model category is based on the "Technical Specifications for Autonomous and Controllable New Generation Substation Secondary System" series of specifications, including power grid model, geographical area model, primary main equipment model, secondary main equipment model, auxiliary equipment model, station control layer equipment model, network equipment model, the models contained in each category model are type models, the models contained in each type model are subtype models, and the subtypes are extended to include subclasses, equipment, and component types. The subclasses, equipment, and components can be used as independent objects for simulation modeling, or as components of primary and secondary equipment for behavioral characteristics simulation.

[0016] Furthermore, the unified identification mapping table of equipment identification of each platform of the simulation system and the business system, and the unified identification mapping table of signal identification of each platform of the simulation system and the business system include: simulation unified code identification, 61850 system / substation corresponding code identification, centralized control system corresponding code identification, dispatching system corresponding code identification, and business middle station corresponding code identification.

[0017] Furthermore, according to the mapping relationship described in the device identification unified identification mapping table and the signal identification unified identification mapping table, the corresponding data is matched to different simulation objects to establish a standardized device model containing operation logic, including:

[0018] Establish a static model definition table for various types of power grid equipment. The static model definition table is a description of the basic information of the equipment. On the basis of the static model table, add a description of the equipment subtype, model, manufacturer, and software and hardware configuration information, establish a type definition table for various types of power grid equipment, and specify the equipment operation / mechanism call template in the type definition table;

[0019] According to the model system hierarchy table, an entity table of each type of equipment model under the model system is established. The entity table is used to describe the equipment in detail and display the topological relationship and subordinate hierarchy relationship of the equipment between power grids. When establishing the entity table, the equipment operation / mechanism call template in the corresponding type definition table is read in association to instantiate the device, and the instantiation result is written to the respective table.

[0020] Furthermore, the device operation / mechanism call template is an operation logic file of the device, which defines the physical structure, logical mechanism, self-test information, semaphore, measurement quantity, control quantity, constant, control word, alarm, action logic and locking relationship of the device.

[0021] Furthermore, the static model definition table includes a simulation unified code identifier, device name, type, and subtype; and the type definition table, based on the static model definition table, also includes device subtype, model, manufacturer, and software and hardware configuration information.

[0022] Furthermore, the simulated device model table is automatically matched with the real-time system, including: obtaining the specified fields in the real-time system record in turn, determining the correspondence between the simulation model and the real-time system model through the mapping relationship described in the device identifier unified identifier mapping table and the signal identifier unified identifier mapping table, automatically matching the device's measurement system model and the device operation logic according to the model, and generating each type of device model of the simulation system according to the simulation requirements, and writing them into the simulation system database.

[0023] A power simulation modeling system based on model sourcing and mapping, comprising:

[0024] The model system hierarchy building module is used to classify different simulation model categories according to the functional characteristics of the simulated object, and distinguish types under each category, subtypes under each type, and components under each subtype as needed, establish a model system hierarchy table, and establish a simulation unified code identification for each type of equipment;

[0025] The unified identification mapping construction module is used to establish a unified identification mapping table for device identification of each platform of the simulation system and the business system, and a unified identification mapping table for signal identification of each platform of the simulation system and the business system. Each mapping table records the mapping relationship between the simulation unified code identification in the model system hierarchy table and the code identification of each platform of the business system for equipment / measurement point;

[0026] The device model building module is used to obtain simulation objects from the real-time system, analyze the ledger information of each simulation object through a modeling tool, generate model data of the simulation object, match the corresponding data to different simulation objects according to the mapping relationship described in the device identification unified identification mapping table and the signal identification unified identification mapping table, and establish a standardized device model containing operation logic;

[0027] The simulation matching and maintenance module is used to generate a simulated device model table after the standardized device model is instantiated, automatically match the simulated device model table with the real-time system, analyze the relationship between devices, and automatically perform maintenance.

[0028] The present invention also provides a computer device, comprising: one or more processors; a memory; and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and when the programs are executed by the processors, the steps of the power simulation modeling method based on model sourcing and mapping as described above are implemented.

[0029] The present invention also provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the power simulation modeling method based on model sourcing and mapping as described above are implemented.

[0030] Beneficial effects: There are many devices in a single substation and they are very different, especially the secondary equipment and accessories, and the intricate secondary circuits of the equipment in the station, which results in a huge workload for simulation modeling. The simulation requirements for the secondary system of the centralized control station simulation are basically the same as those for the substation simulation. However, since it generally requires the establishment of all substation models for centralized monitoring according to the actual power grid, it is necessary to consider not only the secondary circuits of each equipment in the station, but also the electrical connections between stations, so the modeling workload is greater. The method based on model sourcing and mapping described in the present invention can automatically construct the simulation model, which is used to improve the training simulation system, especially the efficiency and accuracy of the simulation modeling of the centralized control station and substation. This is also a key step in the practical application of the entire centralized control station simulation project. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A relationship diagram of data feedback and mapping during instantiation under the concept of model sourcing and mapping of the present invention;

[0032] Figure 2 A flow chart of the modeling of the primary equipment power grid and equipment automation in an embodiment of the present invention;

[0033] Figure 3 This is an example of a static model of a device within an interval in an embodiment of the present invention;

[0034] Figure 4 A flow chart of generating a device table for a secondary device in an embodiment of the present invention;

[0035] Figure 5 This is a flow chart of completing automatic modeling of secondary equipment according to the device table in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings.

[0037] Taking the centralized control system as an example, the current model data sources of the centralized control system can be divided into stock stations and incremental stations. The stock station model is generally imported directly from the dispatching system through the model conversion tool. Incremental station types usually include conventional stations (103 stations), intelligent stations (61850 stations) and autonomous controllable substations (61860 stations). For the access of incremental conventional stations and intelligent stations, the centralized control system is generally carried out by manual entry. For autonomous controllable substations, their access can be directly accessed by parsing the SCD (Substation Configuration Description) file provided by the station end through the model tool. The centralized control station training simulation system simulates the centralized control system itself and the equipment it monitors (usually in units of substations). From the perspective of monitoring objects, it is also necessary to distinguish between conventional stations, intelligent stations and autonomous controllable substations. Therefore, when simulating modeling, it is necessary to consider the modeling differences between the stock stations and incremental stations of the centralized control system; it is also necessary to consider the modeling differences between conventional stations, intelligent stations and autonomous controllable substations.

[0038] For autonomous and controllable substations, the substation side should produce and provide the whole station SCD file to the centralized control side according to the relevant specifications in the series of specifications of "Technical Specifications for Secondary Systems of Autonomous and Controllable New Generation Substations", and the centralized control station side shall produce the model and access the equipment on the master station side according to the SCD file provided by the station side. In the series of specifications of "Technical Specifications for Secondary Systems of Autonomous and Controllable New Generation Substations", very detailed provisions are made for the centralized control station monitoring system, centralized control station monitoring system data, substation secondary system data, equipment and system models, etc. If the model can be configured, associated and stored in accordance with the specifications in each production link, it will provide a strong theoretical basis and implementation possibility for the power simulation modeling method based on model sourcing and mapping.

[0039] Since the SCD file can accurately describe the detailed configuration information and association relationships of the substation primary equipment, intelligent equipment, and auxiliary equipment, it provides an unambiguous description of the object model of the substation IED, the communication connection between devices, the subordination and mapping connection relationship between devices, and the association relationship between primary and secondary equipment. This makes it possible to parse the substation SCD file to generate a network connection diagram between each IED, a logical connection diagram of the virtual terminals on the same path between each IED, and a subordination and connection diagram of primary and secondary equipment.

[0040] In addition to SCD files, other configuration files used in the field of power system automation include RCD files (Remote Configuration Description files). RCD files are mainly used in the operation and maintenance phase of substations, especially in remote monitoring and control, to ensure that the remote motors operate correctly according to the predetermined configuration. Compared with SCD files that contain the configuration information of the entire substation, RCD files focus on the configuration of the remote motors, and they focus more on the description of the actual operation configuration and control information of the remote motors. Similarly, according to the "Technical Specifications for Secondary Systems of Autonomous and Controllable New Generation Substations", RCD files will describe in detail the control information, communication configuration and operation logic between the remote motors and the substation IED. Since the RCD file accurately describes the object model of the remote motor, the communication connection between devices, the subordinate and mapping connection relationship between devices, and the association relationship between the remote motor and primary and secondary devices, it provides the possibility of parsing the substation RCD file to generate the network connection diagram between the remote motor and the IED, the logical connection diagram of the virtual terminal on the same path, and the subordinate and connection diagram between the remote motor and the primary and secondary devices.

[0041] In the series of specifications of "Technical Specifications for Secondary Systems of Autonomous and Controllable New Generation Substations", the substation equipment model is defined. The substation equipment model covers the information models of all equipment in the substation except multimedia data streams, including power grid model, geographic area model, primary equipment model, secondary equipment model, auxiliary equipment model, station control layer equipment model, network equipment model, etc. In this specification, a unified model system is formulated for the models between substations, centralized control stations, control centers and business middle offices. In this model system, power grid equipment and systems are divided into eight types of models: equipment ledger model, power grid model, geographic area model, primary equipment model, secondary equipment model, auxiliary equipment model, station control equipment model, and network equipment model. Among them, the power grid model includes substation model, voltage level model, interval model and topology model, etc.; the geographical area model includes regional model, panel cabinet model, cable connection model and device equipment model, and the geographical area model within the substation includes regional model, panel cabinet model and cable connection model; the primary equipment model includes transformer, circuit breaker, busbar, knife switch, line, capacitor / reactor, mutual inductor, arc suppression coil, high-voltage reactor, lightning arrester, trolley, grounding transformer and other equipment models; the secondary equipment model includes measurement and control, protection, safety automatic device, metering, intelligent recorder, AC / DC system and other equipment models; the auxiliary equipment model includes online monitoring, power environment, security defense, fire protection and other equipment models; the station control layer equipment model includes main and auxiliary integrated monitoring host, comprehensive application host, intelligent five-defense host, real-time gateway, service gateway and other equipment models; the network equipment model includes network switch model, etc.

[0042] The specification stipulates that when establishing an equipment ledger, it is necessary to define basic equipment information such as equipment type, equipment name, manufacturer, physical ID, etc. in the general ledger. The equipment name is generally in English, and it also provides more detailed regulations for the naming of secondary equipment. The following Table 1 is excerpted from the specification, and a few items are selected for illustration only.

[0043] Table 1 IED name naming specification

[0044]

[0045] Due to the particularity of the simulation system, the modeling method, processing rules, model naming rules, etc. adopted are not completely consistent with the actual production system. The instantiated simulation signal is not completely consistent with the actual signal name in the actual SCADA system and security system. The measurement information (that is, the modeling method) for various types of equipment in the production system is also different. Taking the circuit breaker as an example, in the dispatching system and centralized control system, the circuit breaker's closing and opening position signal, voltage, current, active and reactive power and other telemetry data are in the equipment table and belong to the equipment. Strongly correlated with the equipment; other signals of the circuit breaker, such as the XXX circuit breaker SF6 low pressure alarm, XXX circuit breaker low oil pressure opening and closing total lockout, XXX circuit breaker low oil pressure closing lockout, XXX circuit breaker low oil pressure reclosing lockout, XXX circuit breaker spring no energy storage and other telesignal signals are stored in the telesignal table. The telesignal records in the table, except for the Chinese name that shows it is the XXX circuit breaker signal of XX substation, it is difficult to see the actual equipment affiliation; other primary equipment are similar; the telesignal information of secondary equipment is even more so, which is particularly evident in the dispatching system (the dispatching system does not model secondary equipment, especially measurement and control equipment).

[0046] Until now, the problem of how to match the simulation signals of the simulation system with the signals in the actual SCADA system, the protection signal table of the security system and other business systems has not been well solved, which has also led to unsatisfactory simulation effects of the simulation system at the signal simulation level. The simulation object of the simulation system comes from the production system. After the simulation system is simulated, in order to ensure the best simulation effect, the simulation results must be fed back to the production system without endangering the safety of the production system and interfering with the real-time system, so as to meet the training needs of power grid dispatching, monitoring, control and operation and maintenance personnel.

[0047] The method described in the present invention refers to the equipment and model system specified in the specification, and expands and refines the system in the specification according to the characteristics of the training simulation system and the simulation object. The components of the equipment are expanded, and such components can be used as independent objects for simulation modeling or as components of primary and secondary equipment for behavioral characteristics simulation. For example, the expanded secondary equipment components include boards (such as power sockets, CPU boards, AC sampling plug-ins, device panels, indicator light ports, etc.), switch ports (light receiving ports, light emitting ports, Ethernet port A, Ethernet port B, Ethernet port C, etc.); taking the circuit breaker as an example, the equipment components and mechanical structures of the circuit breaker are expanded, including but not limited to hydraulic mechanisms, pneumatic mechanisms, liquid spring mechanisms, liquid spring mechanisms, operating mechanisms, control circuits, pressure gauges, etc.; at the same time, some common and relatively independent equipment models are established, such as hard pressure plates, air switches, operating handles, indicator lights, five-protection locks, etc., and the equipment is classified and labeled with English or Chinese pinyin abbreviations for use in the simulation system. The identification is the simulation unified code identification. Thus, a hierarchical model system including model categories, types, subtypes, subclasses / organizations or components is formed, wherein the model categories include power grid model, geographical area model, primary main equipment model, secondary main equipment model, auxiliary equipment model, station control layer equipment model, and network equipment model. The models contained in each category model are type models, and the models contained in each type model are subtype models. The subtypes are extended to include subclasses, equipment, and component types, as shown in Table 2, which lists common typical data (due to space reasons, not all are listed, and for some categories, only one item is listed). It should be understood that the identifiers shown in Table 2 (described in the simulation system) are only examples, and can be set according to one's own needs or other agreements in actual applications. The role of this unified identifier is to facilitate unified mapping between the business middle station, centralized control system, other business systems and simulation systems.

[0048] Table 2 Simulation system hierarchical model system table (partial)

[0049]

[0050]

[0051]

[0052] After the construction of the power grid equipment and model system analysis is completed, the first step is to establish a unified identification mapping table for the equipment identification of each platform of the simulation system and the business system. The mapping table records the comparison and mapping relationship between the power grid and equipment model in the training simulation system (Operational Training Simulator, OTS) and the power grid equipment description method in each business system (61850 system / substation, centralized control system, dispatching system, business middle platform) for subsequent analysis. As shown in Table 3, in the unified identification mapping table of OTS and each platform equipment identification, for each type of equipment (the so-called each type of equipment here can be any level in the category, type, subtype or equipment, component level), the simulation unified code identification simu_str_code (i.e., the description in the simulation system set in Table 2), the corresponding code identification ref_str_code of the 61850 system / substation, the corresponding code identification ecs_str_code of the centralized control system, the corresponding code identification d5000_str_code of the dispatching system, and the corresponding code identification pms_str_code of the business middle platform are recorded.

[0053] Table 3 OTS and unified identification mapping table of each platform device identification

[0054]

[0055]

[0056] Then, a static model definition table for various types of power grid equipment is established, and the equipment and equipment in the model system are classified and defined one by one. Only some examples are selected for illustration, as shown in Table 4 and Table 5.

[0057] Table 4 OTS primary equipment static model definition table

[0058]

[0059] Table 5 OTS secondary equipment static model definition table

[0060]

[0061]

[0062] Similarly, static model definition tables for auxiliary equipment, general devices, air switches, pressure plates, handles, indicator lights, and other components are established. The static model definition table is a description of the most basic meta-information of the equipment, which includes basic equipment information such as simulation unified code identification, equipment name, type, and subtype.

[0063] Then, a type definition table for each type of power grid equipment is established, and the equipment and equipment in the model system are classified and defined one by one. The type definition table is a description of the equipment subtype, model, manufacturer, and other information such as hardware and software configuration based on the static model table. Take primary equipment and secondary equipment as an example, as shown in Table 6 and Table 7.

[0064] Table 6 OTS primary equipment type definition table

[0065]

[0066] Table 7 OTS secondary equipment type definition table

[0067]

[0068]

[0069] The dev_mod_id / rly_mod_id device operation / mechanism call template in the table is the device's operation logic file, which defines the device's physical structure, logical organization, self-test information, semaphore, measurement quantity, control quantity, set value, control word, alarm, action logic and locking relationship. When establishing the device entity table, the information in this table will be read and the device will be instantiated. The instantiation results will be written to their respective tables, such as telesignaling table, telemetering table, remote control table, set value table, control word table, protection signal table, etc.

[0070] Then, the entity table of each type of equipment model under the model system is established. The equipment entity table is used to describe the equipment in detail and to show the topological relationship and subordinate hierarchy of the equipment in the power grid. Take the circuit breaker and protection device as an example, as shown in Table 8 and Table 9.

[0071] Table 8 OTS circuit breaker table

[0072]

[0073]

[0074] Table 9 OTS relay protection equipment table

[0075]

[0076]

[0077] The PhyassetID (physical ID) field and corr_id (corresponding master station ID) field in the table are used to reflect the relationship between the device in the business middle station and the corresponding master station system (dispatching system or centralized control system).

[0078] For signals, that is, measuring point naming, in the business system, measuring point naming generally defines unique English names and Chinese names for all devices, components, and measuring points. The Chinese name is used to describe the Chinese meaning of the information. The naming format is specified in DL / T 1171. For example, the bus differential is BusPDIF, the switch position is Pos, and the fault number is FltNum; at the same time, it should be ensured that the same type of objects and attributes have the same English name, and the English names of different types of objects and attributes should be different. The English names of equipment objects and component objects should be defined according to the logical nodes of the DL / T 860 standard, and the equipment or component can be uniquely identified by adding prefixes and serial numbers with practical meanings. For example, RefTCTR represents reference current transformer, CarPDIF represents longitudinal differential protection, and ZerPTOC1 represents zero-sequence overcurrent I protection; the English names of measuring point objects should give priority to the DO names with the same meaning in the DL / T 860 and Q / GDW 1396 specifications, and the extended measuring point object names should be named based on the glossary rules to ensure a certain readability. When modeling using the DL / T 860 standard, the relationship between the model definition and the measurement point name is as follows:

[0079] For non-GGIO objects, if the DO name can clearly represent the data, then the DO name is the English name of the measuring point, which is uniquely determined by the reference name, such as CarPDIF / Op for longitudinal differential protection action, and CarZerPTOC1 / StrVal for longitudinal zero-sequence overcurrent setting; if the DO name cannot clearly represent the data, the value of its attribute d is the English name of the measuring point, for example: LLN0 / FuncEna1, which actually represents the charging overcurrent protection soft pressure plate, so the d value ChaOcVirEna is used as the English name; for GGIO objects, its name is uniquely determined by the attribute d, and the value of the attribute d is the English name of the measuring point, such as LowBlkRec for low air pressure (spring has no energy stored) locking reclosing, and DevBlk for device locking.

[0080] In the simulation system, all devices, components and measurement points are also uniquely defined. Objects and attributes of the same type have the same English name, and objects and attributes of different types have different English names. However, since the description method of the simulation system is different from that in the business system, it is necessary to establish a unified identification mapping table between OTS and each platform signal identification, as shown in Table 10:

[0081] Table 10 OTS and unified identification mapping table of each platform signal identification

[0082]

[0083] The same as the unified identification mapping table between OTS and each platform equipment identification, the unified identification mapping table between OTS and each platform signal identification, for each measuring point (the so-called each measuring point here can be a measuring point corresponding to any level of model category, type, subtype or equipment, component level), records the simulation unified code identification simu_str_code (that is, the description in the simulation system set in Table 2), the 61850 system / substation corresponding code identification ref_str_code, the centralized control system corresponding code identification ecs_str_code, the dispatching system corresponding code identification d5000_str_code, and the business middle station corresponding code identification pms_str_code.

[0084] After the table is created, the description of the measurement point in the simulation system can be compared and mapped with the description of the measurement point in other systems. Examples of different signal descriptions are shown in Table 11:

[0085] Table 11 Examples of different identifications of OTS and signals on various platforms

[0086]

[0087]

[0088] Regarding the unified identification mapping of signal class identifiers, in fact, the mapping of measurement models includes common classes (equipment inventory, technical parameters and operating status), monitoring classes (device alarms, device self-tests, time synchronization monitoring, etc.), measurement classes (telesignaling, telemetry, temperature, etc.), control classes (remote control, remote adjustment), and protection classes (protection signals, protection control words, set values, etc.). It can also be seen from the above table that, for example, the A-phase voltage collection and display of the XX line, the measurement point name is defined as UA in the simulation system, but when the IEC61850 description is used at the plant end, the measurement point name can be defined as PPV.phsAB or PPVphsAB. The dispatching system, data center, centralized control, or other business systems will also have their own measurement point name definition methods. The reason why the present invention uses coding definition instead of matching through Chinese description is that the Chinese description is generally defined manually, and the input habits of different business systems, different regions, and different types of work are not the same, so the matching is difficult and the accuracy is relatively low; while the code definition is usually written inside the code or defined using a certain type of specification, which is relatively standardized, generally does not change, has a fast speed, and a high matching success rate, which can greatly improve the modeling efficiency. As for establishing a mapping table of equipment class ids between the training simulation system and the centralized control and dispatching business center, it is to improve the processing efficiency of the system and meet the timeliness requirements of the training simulation system.

[0089] Finally, the instantiation telemeter table of various equipment models under the model system is established (considering the data capacity and processing efficiency, the telemeter table is divided into telemeter table of primary equipment, secondary equipment, auxiliary equipment, and auxiliary control equipment), telemeter table (considering the data capacity and processing efficiency, the telemeter table is divided into telemeter table of primary equipment, secondary equipment, auxiliary equipment, and auxiliary control equipment), remote control table (considering the data capacity and processing efficiency, the telemeter table is divided into remote control table of primary equipment, secondary equipment, auxiliary equipment, and auxiliary control equipment), protection event / state table, protection analog table, protection setting / control word table, protection soft pressure plate table, etc. Taking the telemeter table of primary equipment and secondary equipment as an example, Tables 12 and 13 show part of the table content respectively.

[0090] Table 12 OTS primary equipment remote signal table

[0091]

[0092]

[0093]

[0094] Table 13 OTS secondary equipment remote signal table

[0095]

[0096]

[0097] When the device is instantiated, the instantiation results will be written to the respective tables, such as telesignaling table, telemetering table, remote control table, set value table, control word table, protection signal table, etc.

[0098] The key node relationship between the data feedback and instantiation mapping of the training simulation system and the business system is Figure 1 Shown in.

[0099] Since SCD and RCD files use Extensible Markup Language (XML) to describe the configuration information of the substation, the simulation system establishes the logical blocks of the secondary system such as IED, data set, virtual channel, virtual circuit and their associations by parsing XML. Then, by sorting out the English abbreviations of the primary and secondary equipment and comparing them with the internal codes of the primary and secondary equipment in the simulation system, the corresponding relationship between the simulation system model and the primary and secondary equipment models of the production system can be established, so that the simulation system can directly obtain the primary and secondary equipment models and the association relationship between the primary and secondary equipment and the subordinate relationship between the equipment from the centralized control station monitoring system. Then, by searching upwards through the reference name of the signal, and extracting the English name of the signal's measurement point, it can be matched with the instance signal in the simulation system, thereby solving the problem of inconsistency and difficulty in matching between the simulation signal and the production signal.

[0100] In general, by studying and analyzing the simulated object, different simulation model categories are divided according to its functional characteristics. The simulation model includes: static model (ledger information), motion (dynamic) model and dynamic data. Especially for equipment simulation, the static model (ledger information), motion model and operation data in the established simulation model are indispensable. The static model is generally the equipment's ledger information, describing the basic characteristics and static parameters of the equipment; the motion model is generally obtained by splitting the model parts according to the equipment's operating characteristics, such as buttons, meters, knife switches, hard pressure plates and other operable components or components that can produce motion relationships. When the equipment is in operation, it will inevitably affect the equipment and the power grid. A series of data generated by correlation, such as dynamic data such as changes in flow and position change alarms, can be bound to the static model and the dynamic model during modeling planning to form a standardized equipment model library containing operating logic, and then the equipment model and the operation data are associated and mapped, so that the simulation of the entire system or equipment can be completed.

[0101] Specifically, after establishing a unified identification mapping table between the simulation system and each platform device identification, and a unified identification mapping table between each platform signal identification, the simulation system can obtain simulation objects from the real-time system based on the mapping relationship described in the unified identification mapping table of device identification and the unified identification mapping table of signal identification. The ledger information of each simulation object is analyzed by a modeling tool to generate model data for the simulation object. Corresponding data, such as static parameters and operating data, are matched to different simulation objects to establish a standardized device model containing operating logic. Different devices form different device model templates. The device model is also a simulation model. After the simulation model is instantiated, a simulated device model table is generated, that is, an entity table established for the simulation object. According to the simulated device model table, it can be automatically matched with the real-time system, the relationship between devices can be analyzed, and maintenance can be automatically performed.

[0102] The following is an explanation of the modeling of primary and secondary equipment of a conventional substation in the centralized control station training simulation system. If the simulated object is an intelligent station, the relevant merging units, operation boxes, local cabinets, prefabricated cabins and other equipment need to be generated when the equipment is generated. Other systems, such as the data center, read the corresponding plant station and analyze the equipment in the station to establish a mapping relationship.

[0103] At the beginning of modeling, select the substation to be simulated, and then the program will obtain the substation, and then analyze and verify the substation voltage level, interval information, primary equipment (busbar, transformer, switch, knife switch, line and other equipment) information and subordinate relationship, topological connection relationship in the real-time system. If it is found that the parameters are incomplete or the information is not maintained (such information needs to be maintained according to regulations when the real-time system is designed, but in fact, because some content is not maintained and will not affect the system function, many of them are not maintained), a prompt will be given. If maintenance is not performed, manual intervention is required (no intervention is irrelevant, the program will automatically determine the type according to the table where the record is located and the Chinese description of the model, and the modeling accuracy may be slightly worse). Then the program will obtain specific fields in the real-time system record in turn to determine the correspondence between the simulation model and the real-time system model, and then automatically match the measurement system model and dynamic model (equipment operation logic) of the equipment according to the model, and generate the power grid model (including topological node number) and primary equipment model (including equipment components, telesignaling, telemetry, remote control, self-test information) of the simulation system according to the requirements of the simulation system, and write them into the simulation system database.

[0104] For ease of explanation, the modeling of primary and secondary equipment is described separately, but in fact the process is synchronous. At the beginning of modeling, select the substation to be simulated, and then the program will obtain the cabin information, panel cabinet information and secondary equipment information of the target substation in the real-time system (some systems may not have it, such as the SCADA application of the dispatching system, which only has primary equipment records and models, and no secondary equipment, such as relay protection, measurement and control device models, and no cabin information or panel cabinet information; for the new generation of centralized control systems, relay protection, measurement and control and other equipment records are managed by the security application, and generally there will be limited secondary equipment records; but cabin information and panel cabinet information are generally not available, so the modeling program will analyze the tables corresponding to the security application). If there are secondary equipment in the system If there is a table or record of secondary equipment, the record will be analyzed to obtain the equipment type, the protected equipment or the collected object, and automatically associate them. If there is no table or record of secondary equipment, the signal table will be read to obtain the Chinese description keywords in the signal table, determine the protection type corresponding to the primary equipment, automatically generate protection equipment, maintain the association between primary and secondary equipment, and generate protection, measurement and control, and safety devices in specific rooms and cabinets according to certain rules. The program will also automatically associate the measurement model and dynamic model of the corresponding equipment according to the ledger records, and instantiate them into complete individual models of each device and the electrical model of the system (each association relationship) when saving.

[0105] Reference Figure 2 , a device modeling process includes the following steps:

[0106] S1, query the real-time system database to obtain the plant and station table of the centralized control system SCADA application or other system substation table;

[0107] S2, based on the selected plant station, obtain the voltage level and interval, and make an association and integrity judgment. The association refers to the information of the primary equipment (busbar, transformer, switch, knife switch, line and other equipment) corresponding to the voltage level and interval, the subordinate relationship of the equipment and the topological connection relationship. If it is found that the information is incomplete or the association is not maintained, it will return to prompt for model maintenance; if the information is complete, it will determine whether to modify the association. If it is to be modified, the interval type will be modified according to the simulation specification requirements, and the comparison relationship will be generated according to the matching rules; if no modification is required, the comparison relationship will be established according to the matching rules;

[0108] S3, based on the comparison relationship, combined with the voltage level information, generates a simulation system interval table, and continues to analyze the main equipment under each interval of the centralized control system, obtains the main equipment model and static parameters in the interval, and improves the interval table; Figure 3 As shown, the main equipment model in the interval includes a circuit breaker model, a switch model, a grounding switch model, a busbar model, an AC line segment model, a transformer model, a transformer winding model, a T AC line model, a shunt capacitor model, a series compensator model, a mutual inductor table model, an arc suppression coil model, a lightning arrester model, a grounding pile model, a network cabinet door model, and a single-end component model, and the relevant static parameters are determined according to the characteristics of the equipment;

[0109] S4. Based on the master device model in the interval, the subordinate association relationship and integrity judgment are performed. If the association relationship is incomplete or the association relationship is not maintained, and it can be maintained in the real-time system, a prompt is returned to perform model maintenance;

[0110] If some tables have no equipment records or cannot be maintained, manual model maintenance is performed. Manual model maintenance includes defining equipment types, configuring equipment numbers, configuring equipment affiliations, configuring associations, and generating equipment records and equipment tables based on the equipment manual modeling results by reading the default configuration parameter file;

[0111] If the association relationship is maintained correctly, determine whether it needs to be modified. If it needs to be modified, perform model maintenance and generate a comparison relationship. If it does not need to be modified, generate a comparison relationship based on the matching rules. Based on the comparison relationship, perform device mapping relationship, device basic model maintenance and static parameter synchronization. Based on the synchronization result, read the default configuration parameter file, perform automatic model file matching, call the device model template and instantiate it according to the matching result, generate device self-test, alarm, signal, measurement, control and online monitoring information, and generate a device telesignaling, telemetry, remote control and self-test table.

[0112] S7. According to the generated interval table, equipment records and equipment table, as well as the telesignaling, telemetering, remote control and self-test table of the primary equipment, the model is downloaded to the database to form a simulation model library.

[0113] There are many secondary equipment devices with great differences. In the automatic modeling process, the device table is first extracted from the real-time system, and then the model and related data are stored in the database through matching and mapping based on the device table. Figure 3 , the process of automatically extracting the device table includes the following steps:

[0114] (1) Obtain a list of all available substations from the system, and select a specified substation for modeling or maintenance as needed. The modeling method can be manual modeling or automatic modeling. The present invention focuses on automatic modeling, and the following description is based on the process of selecting automatic modeling;

[0115] (2) Find the primary equipment of the real-time system through the primary equipment association relationship, and use the data of the real-time system to analyze and extract detailed information of related small rooms, cabinets and secondary equipment;

[0116] (3) Check whether the obtained association relationship and data are complete. If not, the system will prompt for model maintenance and return. The system can use the real-time system model maintenance tool to maintain the model and store it in the production system database. If the association relationship and device information are complete, the system will proceed to the next step.

[0117] (4) Read the cell table of the master station and check whether the cell table needs to be modified. If modification is required, make necessary modifications to the data according to the simulation specification requirements and establish the corresponding relationship of the centralized control model based on the modified data; if modification is not required, directly establish the corresponding relationship of the centralized control model based on the obtained cell table; generate a new cell table based on the established corresponding relationship;

[0118] (5) Read the master station panel cabinet table and check whether the panel cabinet table needs to be modified. If modification is required, make necessary modifications to the data according to the simulation specification requirements and establish a corresponding relationship of the centralized control model based on the modified data; if modification is not required, directly establish a corresponding relationship of the centralized control model based on the obtained panel cabinet table; generate a new panel cabinet table based on the established corresponding relationship;

[0119] (6) Read the master station equipment table and check whether the equipment table needs to be modified. If modification is required, make necessary modifications to the data according to the simulation specification requirements and establish the corresponding relationship of the centralized control model based on the modified data; if modification is not required, directly establish the corresponding relationship of the centralized control model based on the obtained equipment table;

[0120] (7) Based on the small room table, the subordinate relationship of the small room table is analyzed and the corresponding association is established; based on the panel cabinet table, the subordinate relationship of the panel cabinet table is analyzed and the corresponding association is established; and based on the corresponding relationship of the centralized control model, the device table (including protection equipment table, operation box, transceiver, measurement and control equipment) is generated.

[0121] Reference Figure 4,According to the configuration table, relevant configuration information is obtained, including equipment model, parameters, etc., and the automatic modeling process of secondary equipment is carried out, including the following steps:

[0122] Step 1: Automatically match the device table with the device model file. If the device model does not match, select the device model in order. Otherwise, call the device model template, instantiate it, generate the device self-test, alarm, signal, measurement, control, set value, control word, soft pressure plate and other information, and generate the protection device, measurement and control equipment and other secondary equipment telesignal table, telemetering table, remote control table, self-test table based on this information;

[0123] Step 2: Establish and update the primary and secondary main equipment association relationship of the simulation system by analyzing the data in the configuration table, analyze the primary and secondary equipment measurement points and instantiated measurement point mapping / association relationship, map with the real-time system, obtain the real-time system telesignaling table, telemetering table, control meter, analog meter, etc., match and map the primary and secondary equipment measurement point table of the real-time system, and generate the simulation system and real-time system telesignaling, telemetering, remote control transfer table, etc.;

[0124] Step 3, by analyzing the mapping / association relationship between the primary and secondary equipment measurement points and the instantiated measurement points, mapping with the simulation system, reading the primary equipment measurement points of the simulation system, matching and mapping through the primary and secondary equipment measurement point table of the simulation system, and generating the primary and secondary equipment measurement point mapping relationship table;

[0125] Step 4, according to the telesignaling table, telemetering table, remote control table, self-test table of protection equipment, measurement and control equipment and other secondary equipment, the telesignaling, telemetering, remote control transfer table of simulation system and real-time system, and the mapping relationship table of primary and secondary equipment measurement points, the database is entered to form a simulation model library.

[0126] The present invention also provides a power simulation modeling system based on model sourcing and mapping, comprising:

[0127] The model system hierarchy building module is used to classify different simulation model categories according to the functional characteristics of the simulated object, and distinguish types under each category, subtypes under each type, and components under each subtype as needed, establish a model system hierarchy table, and establish a simulation unified code identification for each type of equipment;

[0128] The unified identification mapping construction module is used to establish a unified identification mapping table for device identification of each platform of the simulation system and the business system, and a unified identification mapping table for signal identification of each platform of the simulation system and the business system. Each mapping table records the mapping relationship between the simulation unified code identification in the model system hierarchy table and the code identification of each platform of the business system for equipment / measurement point;

[0129] The device model building module is used to obtain simulation objects from the real-time system, analyze the ledger information of each simulation object through a modeling tool, generate model data of the simulation object, match the corresponding data to different simulation objects according to the mapping relationship described in the device identification unified identification mapping table and the signal identification unified identification mapping table, and establish a standardized device model containing operation logic;

[0130] The simulation matching and maintenance module is used to generate a simulated device model table after the standardized device model is instantiated, automatically match the simulated device model table with the real-time system, analyze the relationship between devices, and automatically perform maintenance.

[0131] The present invention also provides a computer device, comprising: one or more processors; a memory; and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and when the programs are executed by the processors, the steps of the power simulation modeling method based on model sourcing and mapping as described above are implemented.

[0132] The present invention also provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the power simulation modeling method based on model sourcing and mapping as described above are implemented.

Claims

1. A power simulation modeling method based on model sourcing and mapping, characterized in that: The following steps are involved: According to the functional characteristics of the simulated object, it is divided into different simulation model categories, and the types are distinguished under each category, the subtypes are distinguished under each type, and the components are distinguished under each subtype. A model system hierarchy table is established, and a simulation unified code identification is established for each type of equipment; Establish a unified identification mapping table for equipment identification of each platform of the simulation system and the business system, and a unified identification mapping table for signal identification of each platform of the simulation system and the business system. Each mapping table records the mapping relationship between the simulation unified code identification in the model system hierarchy table and the code identification of each platform of the business system for equipment / measurement point; Acquire simulation objects from the real-time system, analyze the ledger information of each simulation object through a modeling tool, generate model data of the simulation object, match corresponding data to different simulation objects according to the mapping relationship described in the device identification unified identification mapping table and the signal identification unified identification mapping table, and establish a standardized device model containing operation logic; After the standardized device model is instantiated, a simulated device model table is generated. Based on the simulated device model table, it is automatically matched with the real-time system, the relationship between devices is analyzed, and maintenance is automatically performed.

2. The method according to claim 1, characterized in that The model system hierarchy table includes a hierarchical model system from model category, type, subtype, to subcategory / organization or component, wherein the model category is based on the "Technical Specifications for Autonomous and Controllable New Generation Substation Secondary System" series of specifications, including power grid model, geographical area model, primary main equipment model, secondary main equipment model, auxiliary equipment model, station control layer equipment model, network equipment model, the model included in each category model is a type model, the model included in each type model is a subtype model, the subtype is extended to include subclasses, equipment, component types, the subclasses, equipment, components can be used as independent objects for simulation modeling, or as components of primary and secondary equipment for behavioral characteristics simulation.

3. The method according to claim 1, characterized in that The unified identification mapping table of equipment identification of each platform of simulation system and business system, and the unified identification mapping table of signal identification of each platform of simulation system and business system include: simulation unified code identification, 61850 system / substation corresponding code identification, centralized control system corresponding code identification, dispatching system corresponding code identification, and business middle station corresponding code identification.

4. The method according to claim 1, characterized in that: According to the mapping relationship described in the device identification unified identification mapping table and the signal identification unified identification mapping table, the corresponding data is matched to different simulation objects to establish a standardized device model containing operation logic, including: Establish a static model definition table for various types of power grid equipment. The static model definition table is a description of the basic information of the equipment. On the basis of the static model table, add a description of the equipment subtype, model, manufacturer, and software and hardware configuration information, establish a type definition table for various types of power grid equipment, and specify the equipment operation / mechanism call template in the type definition table; According to the model system hierarchy table, an entity table of each type of equipment model under the model system is established. The entity table is used to describe the equipment in detail and display the topological relationship and subordinate hierarchy relationship of the equipment between power grids. When establishing the entity table, the equipment operation / mechanism call template in the corresponding type definition table is read in association to instantiate the device, and the instantiation result is written to the respective table.

5. The method according to claim 4, characterized in that The device operation / mechanism call template is the device operation logic file, which defines the device's physical structure, logical mechanism, self-test information, semaphore, measurement quantity, control quantity, set value, control word, alarm, action logic and locking relationship.

6. The method according to claim 4, characterized in that The static model definition table includes a simulation unified code identifier, a Chinese description of the device, a type, and a subtype; based on the static model definition table, the type definition table also includes a device subtype, model, manufacturer, and software and hardware configuration information.

7. The method according to claim 1, characterized in that Automatically match the simulated device model table with the real-time system, including: obtaining the specified fields in the real-time system record in sequence, determining the correspondence between the simulation model and the real-time system model through the mapping relationship described in the device identification unified identification mapping table and the signal identification unified identification mapping table, automatically matching the device's measurement system model and the device operation logic based on the model, and generating each type of device model of the simulation system according to the simulation requirements, and writing into the simulation system database.

8. An electric power simulation modeling system based on model sourcing and mapping, characterized in that: include: The model system hierarchy building module is used to classify different simulation model categories according to the functional characteristics of the simulated object, and distinguish types under each category, subtypes under each type, and components under each subtype as needed, establish a model system hierarchy table, and establish a simulation unified code identification for each type of equipment; The unified identification mapping construction module is used to establish a unified identification mapping table for device identification of each platform of the simulation system and the business system, and a unified identification mapping table for signal identification of each platform of the simulation system and the business system. Each mapping table records the mapping relationship between the simulation unified code identification in the model system hierarchy table and the code identification of each platform of the business system for equipment / measurement point; The device model building module is used to obtain simulation objects from the real-time system, analyze the ledger information of each simulation object through a modeling tool, generate model data of the simulation object, match the corresponding data to different simulation objects according to the mapping relationship described in the device identification unified identification mapping table and the signal identification unified identification mapping table, and establish a standardized device model containing operation logic; The simulation matching and maintenance module is used to generate a simulated device model table after the standardized device model is instantiated, automatically match the simulated device model table with the real-time system, analyze the relationship between devices, and automatically perform maintenance.

9. A computer device, characterized in that: include: one or more processors; Memory; And one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and when the programs are executed by the processors, the steps of the power simulation modeling method based on model sourcing and mapping as described in any one of claims 1-7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the power simulation modeling method based on model sourcing and mapping as described in any one of claims 1 to 7 are implemented.

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