Construction method and system of relay protection equipment model data center

Abstract

The invention discloses a construction method and system of a relay protection equipment model data center, and relates to the technical field of power system construction and operation and maintenance, and the method comprises the steps: creating a protection equipment ID, distributing an identifier ID for the protection equipment, and updating the parameter attribute of a protection equipment model center when the attribute of the equipment changes; constructing a mapping relation between a station end protection equipment model and a protection equipment model center, calculating the distribution score of each system, and carrying out data synchronization; primary and secondary equipment models in the system are imported into a protection equipment model center for data management, and meanwhile, equipment models of other systems are imported; and obtaining operation information in a service system, and adjusting the relay protection equipment model data center according to the performance of the data center. According to the invention, the information reconstruction of the related operation data of the relay protection service is realized through the fusion of the source end modeling and the collection model, the power grid control capability and the working efficiency are improved, and the safe operation of the power grid is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of power system construction and operation and maintenance, and in particular to a method and system for constructing a relay protection equipment model data center. Background Art

[0002] With the rapid development of AC / DC hybrid power grids and the increase in new control and operation services, the workload and complexity of control and operation services have increased significantly, and the difficulty of power grid operation control has increased day by day. The decentralized protection business system cannot effectively support the ability of power grid dispatching to control large power grids and optimize resource configuration on a large scale. The model data of each protection system is not unified, and there is duplication of construction; each protection business is independent, the data barrier is serious, and there are obstacles to interaction with other businesses; each system has a single business and cannot effectively support advanced applications.

[0003] Build a data center for relay protection equipment models, give full play to the positive role of relay protection equipment and systems as the core of dispatching data resource management, accelerate the deep integration of digital technology and power grid business, and give full play to the amplification, superposition and multiplication effect of data value. Use multi-dimensional data modeling technology to establish a correlation model between primary equipment and protection equipment, integrate operation, alarm and fault data to generate a multi-dimensional analysis model, provide a model and data foundation for the development of advanced applications, and meet the needs of dispatching business for multi-angle analysis and information drilling from the time dimension, space dimension and application dimension. Optimize and improve the semantic specifications of protection devices, improve the standardization, consistency, completeness, accuracy and timeliness of protection data, deeply explore the value of data, eliminate the drawbacks of a wide variety of protection devices and non-standard naming, and lay a solid foundation for the long-term development of protection business. Summary of the invention

[0004] In view of the problems existing in the existing methods for constructing a data center for a relay protection device model, the present invention is proposed. Therefore, the problem to be solved by the present invention is how to provide a method and system for constructing a data center for a relay protection device model.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] In the first aspect, the present invention provides a method for constructing a relay protection device model data center, which includes creating a protection device ID to assign an identification ID to the protection device, and updating the parameter attributes of the protection device model center when the device attributes change; constructing a mapping relationship between the station-side protection device model and the protection device model center to calculate the allocation score of each system and perform data synchronization; importing the primary and secondary device models in the unified and distributed system into the protection device model center for data governance, and at the same time importing the device models of other systems; obtaining the operating information in the business system, and adjusting the relay protection device model data center according to the performance of the data center.

[0007] As a preferred solution of the method for constructing the relay protection device model data center described in the present invention, the creation of a protection device ID to assign an identification ID to the protection device includes the following steps: designing a protection device ID structure and determining the composition structure of the protection device ID; clarifying the major and minor category codes of each device, determining the device category according to the type of device, and assigning a fixed two-digit code; assigning a data management agency code to each data management agency, and within each data management agency, determining the number of digits in the serial number according to the actual number of devices to assign a serial number to the device; forming a complete protection device ID, recording the ID and related information of each device in the database, regularly checking the usage of the ID, and continuing to generate a new protection device ID when a new device is added.

[0008] As a preferred solution of the construction method of the relay protection device model data center described in the present invention, wherein: the protection device model center includes a model center, a real-time measurement center and an operation data center; the relay protection device model data center obtains the protection device model information in the relay protection statistical analysis and operation management system, the relay protection fault information system, the fault recording networking system, and the constant setting system; the model center is used to perform a device model modeling, generate a protection device model, and other systems synchronize the protection device model from the model center on demand to perform basic modeling of local services; the real-time measurement center is used to collect the real-time measurement data of the protection device; the operation data center is used to serve the data application layer business needs of the protection device model data center through the protection device operation data.

[0009] As a preferred solution of the method for constructing the relay protection device model data center described in the present invention, the calculation of the distribution score of each system includes the following steps: obtaining the protection device model information in the relay protection statistical analysis and operation management system, the relay protection fault information system, the fault recording networking system, and the fixed value setting system; calculating the processing efficiency, data integrity and resource utilization indexes of each system, and obtaining the quantitative index score of each system, and the calculation formula is:

[0010]

[0011] In the formula, f k,1 is the processing efficiency index of the system, T is the total response time of the system, N is the total number of requests, and T i is the response time of the i-th request, f k,2 is the data integrity index of the system, E is the number of errors, D is the total number of data entries, and f k,3 is the resource utilization index of the system, C is the CPU usage, M is the memory usage, and C max is the maximum capacity of the system CPU, M maxis the maximum capacity of the system memory; assign weights to each indicator and use the weighted sum method to calculate the assigned score of each system. The calculation formula is:

[0012] S k =w1·f k,1 +w2·f k,2 +w3·f k,3

[0013] w1+w2+w3=1

[0014] In the formula, S k is the allocation score of the system, w1 is the weight of the processing efficiency indicator, w2 is the weight of the data integrity indicator, and w3 is the weight of the resource utilization indicator; the systems are sorted from large to small according to their allocation scores, and data synchronization is performed according to the sorted system order.

[0015] As a preferred solution of the method for constructing the relay protection device model data center of the present invention, the data synchronization includes the following steps: assigning the relay protection device model data to the relay protection device model data center for verification according to the assigned score, and the calculation formula is:

[0016]

[0017] Where S is the verification score of the data item in the time window t, t is the time window, λ is the decay coefficient, τ is the time variable calculated from the current time to the past, N is the number of accesses to the data item at time τ, n is the number of correlation factors, and w i is the weight coefficient of the i-th correlation factor, R i is the score of the i-th correlation factor in time window t, m is the number of normalized factors, θ j is the coefficient of the jth normalization factor, C j is the jth normalization factor; make initial judgment and calculate the partition threshold. The relevant calculation formula is:

[0018]

[0019] In the formula, H i is the partition threshold, μ i is the adjustment factor of the partition threshold, K is the total number of data items in the network, N(d k,t) is the number of accesses of the kth data item in the time window t, α is the time decay coefficient; if the verification score S>the first partition threshold H1, the data item is directly allocated to the relay protection device model data center; if the verification score S<the second partition threshold H2, the data item is directly allocated to the system with the smallest allocation score; if the second partition threshold H2≤allocation score S≤first partition threshold H1, the data item is returned to the relay protection device model data center to enter the secondary judgment stage and adjust the network status; the network congestion is calculated based on the current network traffic and node load. If the network congestion is higher than the predetermined network congestion threshold Ω max , then increase the second partition threshold H2 and reduce the first partition threshold H1; classify the types of data items, set the priority P(Td) of different types of data, and adjust the distribution score based on the priority. The relevant calculation formula is:

[0020]

[0021] In the formula, is the adjusted allocation score; a final storage decision is made, and data allocation is performed again according to the adjusted allocation score, the updated first partition threshold H1 and the second partition threshold H2.

[0022] As a preferred solution of the method for constructing the relay protection device model data center of the present invention, the final storage decision includes: After the first partition threshold H1 and the second partition threshold H2 are updated, data allocation is performed again; if the adjusted allocation score >After the updated first partition threshold H1, the data item is allocated to the relay protection device model data center; if the adjusted allocation score < the updated second partitioning threshold H2, the data item is allocated to the system with the smallest allocation score; otherwise, the data item is allocated in sequence according to the allocation score order of the systems.

[0023] As a preferred solution of the method for constructing the relay protection device model data center described in the present invention, the data governance includes the following steps: a table is created in the protection device model center according to the designed general data object structure of the protection device, the relay protection statistical analysis and operation management system sorts out the correspondence between the tables and provides the mapping relationship to the data model center, and the benchmark model is imported based on the ETL tool; other protection business systems obtain the primary equipment model from the model data center and associate it, and upload the associated primary and secondary equipment models to the protection device model data center; the protection device model center obtains the primary and secondary equipment models of other protection business systems through primary equipment information retrieval, and establishes an identification mapping relationship between the protection-related business system and the model center based on the secondary equipment information; each protection business system synchronizes the protection device model, supplements and improves the protection device parameter model according to the mapping association relationship and the interactive interface, and the Baoxin master station adopts the station-side maintenance method to model and maintain the parameters according to the mapping relationship.

[0024] In the second aspect, the present invention provides a system for building a relay protection device model data center, which includes: a construction module, which is used to create a protection device ID to assign an identification ID to the protection device, and update the parameter attributes of the protection device model center when the device attributes change; an allocation module, which is used to build a mapping relationship between the station-side protection device model and the protection device model center, calculate the allocation score of each system, and perform data synchronization; a governance module, which is used to import the primary and secondary device models in the unified and distributed system into the protection device model center for data governance, and at the same time import the device models of other systems; an adjustment module, which is used to obtain operating information in the business system and adjust the relay protection device model data center according to the performance of the data center.

[0025] In a third aspect, the present invention provides a computer device, including a memory and a processor, wherein the memory stores a computer program, wherein: when the processor executes the computer program, the steps of the method for constructing a relay protection device model data center are implemented.

[0026] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program is executed by a processor, the steps of a method for constructing a relay protection device model data center are implemented.

[0027] The beneficial effects of the present invention are that it relies on multi-dimensional modeling technology, integrates source-end modeling with aggregation models, builds the main framework of the model data center, realizes information reconstruction of operation data related to relay protection services, expands the depth and breadth of source-end data collection, and provides reliable technical support for fault diagnosis, protection information monitoring, status evaluation, and professional management, thereby enhancing the power grid control capability, ensuring the safe operation of the power grid, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A flowchart of a method for constructing a data center for a relay protection device model.

[0030] Figure 2 This is a mapping diagram between the protection model center and the station-side protection model.

[0031] Figure 3 Model data governance flow chart for protecting devices. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present invention more understandable, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1

[0036] Reference Figure 1-Figure 3 , which is the first embodiment of the present invention, and provides a method for constructing a relay protection device model data center, comprising:

[0037] S1: Create a protection device ID to assign an identification ID to the protection device, and update the parameter attributes of the protection device model center when the device attributes change;

[0038] Specifically, a unique identification ID is assigned to each protection device to facilitate identification and positioning.

[0039] Follow the four-stage design principle (major category code, minor category code, data management agency code, and serial number) to create and implement a protective device ID system. Ensure that the ID format complies with the specification and can identify the same device across systems.

[0040] Design the protection device ID structure, determine the composition structure of the protection device ID, and make the protection device ID consist of four parts: "major category code", "minor category code", "data management agency code" and "serial number". Specifically: 1st-2nd digits: a total of 2 fixed digits, representing the "major category code", used to distinguish different types of equipment. 3rd-4th digits: a total of 2 fixed digits, representing the "minor category code", further subdividing the device category. 5th-10th digits: a total of 6 fixed digits, representing the "data management agency code", used to identify the organization that manages the data of the device. 11th-18th digits: a total of 0 to 8 unfixed digits, representing the "serial number", used to distinguish different device instances within the same organization.

[0041] Clarify the major and minor categories of each type of equipment, determine the corresponding major and minor categories according to the type of equipment, and assign them fixed two-digit codes;

[0042] Assign a management code to each data management organization. Within each data management organization, determine the number of digits in the serial number based on the actual number of devices and assign a serial number to each device.

[0043] Create a complete protection device ID, form a complete protection device ID, record each device ID and related information in the database, regularly check the use of IDs to ensure that there are no duplications. When new devices are added, continue to generate new protection device IDs.

[0044] The protection device ID consists of four parts: the data object "major category code", "minor category code", "data management agency code" and "serial number", which are composed of no more than 18 decimal digits and are stored in character type. The 1st to 2nd digits, a total of 2 fixed digits, are the "major category code", representing the major category of the data object; the 3rd to 4th digits: a total of 2 fixed digits, are the "minor category code", representing the detailed sub-category of the data object; the 5th to 10th digits: a total of 6 fixed digits, are the "data management agency code", representing the data management agency; the 11th to 18th digits: a total of 0 to 8 unfixed digits, are the "serial number", representing the sequence number of the object instance among the same type of objects in this organization, and the specific length can vary according to actual conditions.

[0045] When the device attributes in the relay protection device model data center change, update the parameter attributes of the protection device model center;

[0046] The protection equipment model data center includes the protection equipment model information in the relay protection statistical analysis and operation management system, relay protection fault information system, fault recording networking system, and fixed value setting system;

[0047] When the device attributes in the unified and distributed system, security master station, set value setting, wave recording network and other systems change, the parameter attributes of the protection device model center are updated in time, so that any model update of the protection device model center can be notified in real time and adopted by the relevant business system to maintain data consistency.

[0048] For the station-side protection device model, a mapping relationship with the protection device model center is established to ensure accurate mapping of the model information.

[0049] Utilize mature relational database models and standard interfaces to achieve cross-system data synchronization, including full, incremental, and hybrid synchronization modes, to ensure the real-time and integrity of data.

[0050] The primary and secondary equipment models in the unified and distributed system are imported into the protection equipment model center as a benchmark to conduct data governance and ensure data quality. At the same time, the equipment models of other systems are imported to unify the data source.

[0051] Standardize the naming of secondary equipment to facilitate management and maintenance, and import equipment models from other systems such as recording networking systems, setting systems, and security master stations to unify data sources.

[0052] Establish a model data center, real-time measurement center and operation data center, which are responsible for model management, real-time data aggregation and operation data storage respectively.

[0053] Through real-time data unified service, real-time operation status, action alarm and other information are obtained from various business systems to ensure data consistency and accuracy. File services are provided to support cross-region synchronization of recording files and business files, and enhance data interaction and sharing capabilities.

[0054] Regularly evaluate the performance of the data center, collect user feedback, make necessary adjustments and upgrades based on new technological developments and business needs, and ensure the long-term stable operation of the system.

[0055] The relay protection equipment model data center collects protection equipment model information from the relay protection statistical analysis and operation management system (hereinafter referred to as the "unified and sub-system"), the relay protection fault information system (hereinafter referred to as the "protection information master station system"), the fault recording networking system, and the constant value setting system, and obtains the equipment model from the new generation EMS system periodically or triggered according to business needs.

[0056] The protection equipment model center includes the model center, real-time measurement center, and operation data center.

[0057] The model center mainly realizes the source maintenance and unified management of the protection device model. After the device model is built, the protection device model is generated through triggering. The unified subsystem, security master station, fixed value setting, wave recording network and other systems can synchronize the protection device model from the model center on demand to realize the basic modeling of local business. At the same time, the protection-related business system and the model center use interfaces or services to obtain the protection device model and unique identification. Based on the principle of source maintenance, the relevant parameters are maintained in their respective systems and uploaded to the model center so that they are completely stored in the protection device model-related fields of the model center. Based on this collaborative mechanism, a unified and complete protection device model is finally formed on the model center.

[0058] The real-time measurement center realizes the unified aggregation and shared release of real-time measurement information of protection equipment. Through data interfaces and services, it collects real-time measurement data such as current, voltage, and differential current measured by protection devices, providing a data basis for unified analysis and decision-making of protection services.

[0059] The operation data center mainly collects alarms, events, recordings and other operation data as well as various related documents and materials according to the protection equipment, and serves the needs of various businesses in the data application layer of the protection equipment model data center.

[0060] Maintain the attributes of protection equipment. When the attributes of secondary equipment in the system such as the unified subsystem, security master station, fixed value setting, recording network, etc. change, the parameter attributes of the protection model center need to be maintained in the secondary equipment model. The parameter attributes that need to be maintained for each system are shown in Table 1.

[0061] Table 1 Protection professional system parameter attributes

[0062] Serial number system Parameter properties 1 Unified system Secondary equipment manufacturer, defect information, maintenance information, equipment model, etc. 2 Baoxin main site Group number, item number, pressure plate, switch quantity, fault quantity, analog quantity, etc. 3 Fixed value setting system Protection equipment templates, set values, etc. 4 Wave recording network system Recording configuration files, generate recording information, etc.

[0063] Update the protection equipment model. When the model of the protection equipment model center changes, the protection professional systems can update the parameter attributes related to the system in real time according to the interactive interface between the protection equipment model center and the protection-related business system. Relying on the publishing function provided by the new generation of EMS system platform, other professions in the protection business system center can obtain standard protection equipment models.

[0064] S2: Construct a mapping relationship between the station-side protection device model and the protection device model center to calculate the distribution score of each system and perform data synchronization;

[0065] Specifically, the protection device model at the station end is not obtained from the protection device model center, and a mapping relationship is established between the protection model center and the protection model at the station end.

[0066] The device model of the conventional station is mapped through the device address; the parameter models of the device pressure plate, set value, switch quantity, analog quantity, etc. of the conventional station are mapped through the group number and item number; the intelligent station is mapped through the secondary device data index (reference), and the splicing principle of the data index (reference) is specified by the IEC61850 standard. The data index (reference) splicing principle specified by the DL860 standard is consistent with the IEC61850 standard.

[0067] The protection device model data center provides synchronization functions. Based on mature relational database models and standard interfaces, it can achieve real-time data synchronization in seconds across multiple software and hardware platforms, supporting full synchronization, incremental synchronization, and full + incremental synchronization. This function can be used to automatically synchronize data between the Baoxin master station and the recording network system across regions. Based on the file services provided by the protection device model data center, the Baoxin master station and the recording network system can achieve cross-region synchronization of recording files and business files.

[0068] Obtain protection equipment model information in relay protection statistical analysis and operation management system, relay protection fault information system, fault recording networking system, and fixed value setting system;

[0069] Calculate the processing efficiency, data integrity and resource utilization indicators of each system to obtain the quantitative indicator score of each system. The calculation formula is:

[0070]

[0071] In the formula, f k,1 is the processing efficiency index of the system, T is the total response time of the system, N is the total number of requests, and T i is the response time of the i-th request, f k,2 is the data integrity index of the system, E is the number of errors, D is the total number of data entries, and f k,3 is the resource utilization index of the system, C is the CPU usage, M is the memory usage, and C max is the maximum capacity of the system CPU, M max is the maximum capacity of system memory;

[0072] Assign a weight to each indicator and use the weighted sum method to calculate the assigned score for each system, calculated as:

[0073] S k =w1·f k,1 +w2·f k,2 +w3·f k,3

[0074] w1+w2+w3=1

[0075] In the formula, S kis the allocation score of the system, w1 is the weight of the processing efficiency indicator, w2 is the weight of the data integrity indicator, and w3 is the weight of the resource utilization indicator;

[0076] The systems are sorted from largest to smallest according to their assigned scores, and data synchronization is performed according to the sorted system order.

[0077] According to the assigned score, the relay protection device model data is assigned to the relay protection device model data center for verification. The calculation formula is:

[0078]

[0079] Where S is the verification score of the data item in the time window t, t is the time window, λ is the decay coefficient, τ is the time variable calculated from the current time to the past, N is the number of accesses to the data item at time τ, n is the number of correlation factors, and w i is the weight coefficient of the i-th correlation factor, R i is the score of the i-th correlation factor in time window t, m is the number of normalized factors, θ j is the coefficient of the jth normalization factor, C j is the jth normalization factor;

[0080] Make an initial judgment and calculate the division threshold. The relevant calculation formula is:

[0081]

[0082] In the formula, H i is the partition threshold, μ i is the adjustment factor of the partition threshold, K is the total number of data items in the network, N(d k ,t) is the number of accesses of the kth data item in the time window t, and α is the time decay coefficient;

[0083] If the verification score S> the first division threshold H1, the data item is directly allocated to the relay protection device model data center;

[0084] If the verification score S is less than the second partition threshold H2, the data item is directly assigned to the system with the smallest assignment score;

[0085] If the second division threshold H2≤allocation score S≤first division threshold H1, the data item is returned to the relay protection device model data center to enter the secondary determination stage and adjust the network status;

[0086] The network congestion is calculated based on the current network traffic and node load. If the network congestion is higher than the predetermined network congestion threshold Ω max , then increase the second division threshold H2 and reduce the first division threshold H1;

[0087] Classify the types of data items, set the priority P(Td) of different types of data, and adjust the distribution score based on the priority. The relevant calculation formula is:

[0088]

[0089] In the formula, Score the adjusted allocation;

[0090] A final storage decision is made, and data allocation is performed again according to the adjusted allocation score, the updated first partition threshold H1 and the second partition threshold H2.

[0091] Based on the adjusted distribution score After the first partition threshold H1 and the second partition threshold H2 are updated, data allocation is performed again;

[0092] If the adjusted distribution score >After the updated first partition threshold H1, the data item is allocated to the relay protection device model data center; if the adjusted allocation score < the updated second partitioning threshold H2, the data item is allocated to the system with the smallest allocation score; otherwise, the data item is allocated in sequence according to the allocation score order of the systems.

[0093] S3: Import the primary and secondary equipment models in the unified and distributed systems into the protection equipment model center for data management, and import the equipment models of other systems at the same time;

[0094] Specifically, in order to enable different business systems to quickly identify secondary devices, the protection model center standardizes the naming of secondary devices to facilitate the maintenance and management of secondary device models.

[0095] The standard naming convention for protection equipment shows that: all names and descriptions have no spaces, "、" is a full-width input for Chinese input methods, the line name contains Ⅰ, Ⅱ, which are Roman characters; the protection name consists of "primary equipment name" and "protection naming", and the primary equipment naming contains the primary equipment voltage level and equipment name. The line protection of the dual configuration is named main protection, main protection, etc.; the component protection of the dual configuration is named A protection, B protection; the name of the intelligent terminal of the dual configuration is main protection / main protection or A / B set following the protection name.

[0096] The protection model data center collects relevant operation information from protection-related business systems based on the needs of protection business and the working principle of self-build and self-use to serve the construction of various business scenarios.

[0097] The data types and sources collected by the protection model center. The data sources and data dictionary mainly include but are not limited to the following categories: alarm data: sourced from the protection information system and the wave recording network system, action change, alarm self-test, operation status change, etc.; event data: sourced from the protection information system and the wave recording network system, power grid fault report, fault briefing, etc.; wave recording data: sourced from the protection information system and the wave recording network system, fault wave recording list, fault wave recording file, etc.

[0098] The model data center uses real-time data unified services to obtain various types of information such as real-time operation status of relay protection, action alarms, recordings, communication status, etc. from various protection business systems and collect them in the model data center, thereby achieving unified access of the model data center to the protection and dispatching business system data and ensuring the consistency of real-time data.

[0099] The stock model is imported into the protection model center and data management is carried out. At present, the protection equipment models of the recording network system, setting system and unified and subsystem are self-built, and the protection equipment model of the security master station is provided by the station-side system. The primary equipment models of the recording network system, setting system, security master station and unified and subsystem adopt the new generation of EMS system. Considering the high integrity of the equipment ledger of the unified and subsystem, the primary and secondary equipment models of the unified and subsystem are imported into the protection equipment model data center as a benchmark. The model data management flow chart is shown in Figure 3, which is as follows:

[0100] According to the designed general data object structure of protection equipment, a table is built in the protection equipment model center. The unified subsystem sorts out the corresponding relationship between the tables and provides the mapping relationship to the data model center. The benchmark model is imported based on the ETL tool.

[0101] Other protection business systems obtain the primary device model from the model data center and associate it, and upload the associated primary device model to the model data center;

[0102] The protection equipment model center obtains the primary and secondary equipment models of other protection business systems through primary equipment information retrieval, and establishes a unique identification mapping relationship between the protection-related business system and the model center based on the secondary equipment device name, model, set and other information;

[0103] Protect the synchronous protection equipment model of each business system, and supplement and improve the protection equipment parameter model according to the mapping association relationship and interactive interface;

[0104] The Baoxin master station adopts the station-side maintenance modeling method. In order to realize the acquisition of protection device model and parameter model from the station side based on the standard protection device model, the Baoxin master station needs to maintain the parameters according to the mapping relationship.

[0105] The protection equipment model center is guided by an integrated model. Through the collection, processing and storage of information on the entire life cycle of protection equipment, it supports the intelligent management of all business data of protection professionals, panoramic monitoring of protection equipment, fault information analysis, operation statistics and other functional requirements.

[0106] S4: Obtain the operation information in the business system and adjust the data center of the relay protection equipment model according to the data center performance.

[0107] Furthermore, this embodiment also provides a system for building a relay protection device model data center, including: a construction module, which is used to create a protection device ID to assign an identification ID to the protection device, and update the parameter attributes of the protection device model center when the device attributes change; an allocation module, which is used to build a mapping relationship between the station-side protection device model and the protection device model center, calculate the allocation score of each system, and perform data synchronization; a governance module, which is used to import the primary and secondary device models in the unified and distributed system into the protection device model center for data governance, and import the device models of other systems at the same time; an adjustment module, which is used to obtain operating information in the business system and adjust the relay protection device model data center according to the performance of the data center.

[0108] This embodiment also provides a computer device, which is suitable for the method of constructing a relay protection device model data center, including: a memory and a processor; the memory is used to store computer executable instructions, and the processor is used to execute computer executable instructions to implement all or part of the steps of the method described in the embodiment of the present invention as proposed in the above embodiment.

[0109] This embodiment also provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method in any optional implementation of the above embodiment is executed. Wherein, the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read Only Memory, referred to as EPROM), programmable read-only memory (Programmable Red-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0110] The storage medium proposed in this embodiment and the data storage method proposed in the above embodiment belong to the same inventive concept. The technical details not fully described in this embodiment can be found in the above embodiment, and this embodiment has the same beneficial effects as the above embodiment.

[0111] From the above, we can see that this method relies on multi-dimensional modeling technology, integrates source modeling with aggregation model, builds the main framework of the model data center, realizes the update management, expansion and definition of model data based on the data center update and synchronization mechanism, realizes the information reconstruction of the operation data related to the relay protection business, and expands the depth and breadth of source data collection. It provides reliable technical support for fault diagnosis, protection information monitoring, status evaluation, professional management, etc., improves the power grid control ability, ensures the safe operation of the power grid, and improves work efficiency.

[0112] Example 2

[0113] Referring to Table 2, which is the second embodiment of the present invention, this embodiment provides a method for constructing a relay protection device model data center. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0114] Table 2 Technical characteristics comparison table

[0115]

[0116] From the above, we can see that this method relies on multi-dimensional modeling technology, integrates source modeling with aggregation model, builds the main framework of the model data center, realizes the update management, expansion and definition of model data based on the data center update and synchronization mechanism, realizes the information reconstruction of the operation data related to the relay protection business, and expands the depth and breadth of source data collection. It provides reliable technical support for fault diagnosis, protection information monitoring, status evaluation, professional management, etc., improves the power grid control ability, ensures the safe operation of the power grid, and improves work efficiency.

[0117] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for constructing a relay protection equipment model data center, characterized in that: include, Create a protection device ID to assign an identification ID to the protection device, and update the parameter attributes of the protection device model center when the device attributes change; Construct the mapping relationship between the station-side protection device model and the protection device model center to calculate the distribution score of each system and perform data synchronization; Import the primary and secondary equipment models in the unified and distributed systems into the protection equipment model center for data management, and import the equipment models of other systems at the same time; Obtain operation information from the business system and adjust the data center of the relay protection equipment model according to the data center performance.

2. The method for constructing a relay protection device model data center according to claim 1, characterized in that: The step of creating a protection device ID to allocate an identification ID to the protection device includes the following steps: Design the protection device ID structure and determine the composition structure of the protection device ID; Specify the major and minor categories of each type of equipment, determine the equipment category based on the type of equipment, and assign a fixed two-digit code; Allocate a data management agency code to each data management agency, and within each data management agency, determine the number of digits in the serial number and assign serial numbers to the devices based on the actual number of devices; Compose a complete protection device ID, record each device's ID and related information in the database, regularly check the usage of the ID, and continue to generate a new protection device ID when a new device is added.

3. The method for constructing a relay protection device model data center according to claim 2, characterized in that: The protection equipment model center includes a model center, a real-time measurement center and an operation data center; the relay protection equipment model data center obtains the protection equipment model information in the relay protection statistical analysis and operation management system, the relay protection fault information system, the fault recording network system, and the fixed value setting system; The model center is used to perform device modeling and generate a protection device model. Other systems synchronize the protection device model from the model center as needed to perform basic modeling of local services. The real-time measurement center is used to collect real-time measurement data of protection devices. The operation data center is used to serve the data application layer business needs of the protection device model data center through protection device operation data.

4. The method for constructing a relay protection device model data center according to claim 3, characterized in that: The calculation of the allocation score of each system includes the following steps: Obtain protection equipment model information in relay protection statistical analysis and operation management system, relay protection fault information system, fault recording networking system, and fixed value setting system; Calculate the processing efficiency, data integrity and resource utilization indicators of each system to obtain the quantitative indicator score of each system. The calculation formula is: In the formula, f k,1 is the processing efficiency index of the system, T is the total response time of the system, N is the total number of requests, and T i is the response time of the i-th request, f k,2 is the data integrity index of the system, E is the number of errors, D is the total number of data entries, and f k,3 is the resource utilization index of the system, C is the CPU usage, M is the memory usage, and C max is the maximum capacity of the system CPU, M max is the maximum capacity of system memory; Assign a weight to each indicator and use the weighted sum method to calculate the assigned score for each system, calculated as: S k =w1·f k,1 +w2·f k,2 +w3·f k,3 w1+w2+w3=1 In the formula, S k is the allocation score of the system, w1 is the weight of the processing efficiency indicator, w2 is the weight of the data integrity indicator, and w3 is the weight of the resource utilization indicator; The systems are sorted from largest to smallest according to their assigned scores, and data synchronization is performed according to the sorted system order.

5. The method for constructing a relay protection device model data center according to claim 4, characterized in that: The data synchronization comprises the following steps: According to the assigned score, the relay protection device model data is assigned to the relay protection device model data center for verification. The calculation formula is: Where S is the verification score of the data item in the time window t, t is the time window, λ is the decay coefficient, τ is the time variable calculated from the current time to the past, N is the number of accesses to the data item at time τ, n is the number of correlation factors, and w i is the weight coefficient of the i-th correlation factor, R i is the score of the i-th correlation factor in time window t, m is the number of normalized factors, θ j is the coefficient of the jth normalization factor, C j is the jth normalization factor; Make an initial judgment and calculate the division threshold. The relevant calculation formula is: In the formula, H i is the partition threshold, μ i is the adjustment factor of the partition threshold, K is the total number of data items in the network, N(d k ,t) is the number of accesses of the kth data item in the time window t, and α is the time decay coefficient; If the verification score S> the first division threshold H1, the data item is directly allocated to the relay protection device model data center; If the verification score S is less than the second partition threshold H2, the data item is directly assigned to the system with the smallest assignment score; If the second division threshold H2≤allocation score S≤first division threshold H1, the data item is returned to the relay protection device model data center to enter the secondary determination stage and adjust the network status; The network congestion is calculated based on the current network traffic and node load. If the network congestion is higher than the predetermined network congestion threshold Ω max , then increase the second division threshold H2 and reduce the first division threshold H1; Classify the types of data items, set the priority P(Td) of different types of data, and adjust the distribution score based on the priority. The relevant calculation formula is: In the formula, Score the adjusted allocation; A final storage decision is made, and data allocation is performed again according to the adjusted allocation score, the updated first partition threshold H1 and the second partition threshold H2.

6. The method for constructing a relay protection device model data center according to claim 5, characterized in that: The final storage decision includes: After the first partition threshold H1 and the second partition threshold H2 are updated, data allocation is performed again; If the adjusted distribution score >After the updated first partition threshold H1, the data item is allocated to the relay protection device model data center; if the adjusted allocation score < the updated second partitioning threshold H2, the data item is allocated to the system with the smallest allocation score; otherwise, the data item is allocated in sequence according to the allocation score order of the systems.

7. The method for constructing a relay protection device model data center according to claim 6, characterized in that: The data governance comprises the following steps: According to the designed general data object structure of protection equipment, a table is built in the protection equipment model center. The relay protection statistical analysis and operation management system sorts out the corresponding relationship of the table and provides the mapping relationship to the data model center. The benchmark model is imported based on the ETL tool. Other protection business systems obtain the primary device model from the model data center and associate it, and upload the associated primary device model to the protection device model data center; The protection device model center obtains the primary and secondary device models of other protection business systems through primary device information retrieval, and establishes an identification mapping relationship between the protection-related business systems and the model center based on the secondary device information; Each protection service system synchronizes the protection equipment model, supplements and improves the protection equipment parameter model according to the mapping association relationship and interactive interface, and the Baoxin master station adopts the station-side maintenance method to model and maintain the parameters according to the mapping relationship.

8. A system for constructing a relay protection device model data center, based on the method for constructing a relay protection device model data center according to any one of claims 1 to 7, characterized in that: include, A construction module is used to create a protection device ID to assign an identification ID to the protection device and update the parameter attributes of the protection device model center when the device attributes change; The allocation module is used to construct the mapping relationship between the station-side protection device model and the protection device model center, calculate the allocation score of each system, and perform data synchronization; The management module is used to import the primary and secondary equipment models in the unified and distributed systems into the protection equipment model center for data management, and import equipment models from other systems at the same time; The adjustment module is used to obtain the operation information in the business system and adjust the data center of the relay protection equipment model according to the data center performance.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method for constructing a relay protection device model data center according to any one of claims 1 to 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 method for constructing a relay protection device model data center according to any one of claims 1 to 7 are implemented.

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