CN-122020954-A - Relay protection automatic modeling method, system, equipment and medium based on template matching and real-time parameter injection

Abstract

The invention discloses a relay protection automatic modeling method, a system, equipment and a medium based on template matching and real-time parameter injection, which belong to the technical field of relay protection automation of power systems and comprise the steps of intelligently selecting an optimal template from a standardized relay protection template library with a version tracing function by utilizing weighted matching and topology verification; the method comprises the steps of deducing initial setting parameters based on system real-time data, obtaining a final parameter set through systematic verification and automatic correction, injecting the parameters into a template, and finally carrying out version solidification and continuous evolution management on the generated new template. The invention realizes full-flow automatic modeling through a standardized template library and an intelligent matching mechanism, improves modeling efficiency and accuracy, avoids human errors, and simultaneously automatically updates a model according to real-time data by virtue of dynamic matching and topology verification to ensure high adaptation of protection configuration and power grid state.

Inventors

• ZHOU XIN
• WU YANG
• CAI XINYA
• LI XU
• ZHANG TINGRUI
• WANG RONGWEI
• LI YAO
• Dai Qican
• LOU JIAN
• DAI YUNTAO
• YANG HAN
• Lin Xiaodu
• Lei Tinghao
• GAO XIAONA
• FENG XINYU
• Wen Yixiang
• LONG TIANWEI

Assignees

• 贵州电网有限责任公司

Dates

Publication Date

20260512

Application Date

20251210

Claims (10)

1. 1. A relay protection automatic modeling method based on template matching and real-time parameter injection is characterized by comprising the following steps of, Constructing a standardized relay protection template library supporting versioning management, acquiring and analyzing multi-source data by the template library to form a modularized template object, and storing the modularized template object into a warehouse with a version tracing and rollback mechanism; Based on the multidimensional characteristic of the target equipment and the topological relation of the power grid, intelligently matching an optimal protection template from the template library through a weighted matching algorithm and topology collaborative verification; Deducing initial setting parameters of related relay protection functions according to basic quantity data acquired from a power system; Performing systematic verification on the initial setting parameters, and correcting when the initial setting parameters do not meet the requirements to obtain a final setting parameter set; And injecting the final setting parameter set into the optimal protection template, and carrying out version solidification and continuous evolution management on the template after injection.
2. 2. The method for automatically modeling relay protection based on template matching and real-time parameter injection as claimed in claim 1, wherein the step of constructing a standardized relay protection template library supporting versioning management, the template library collecting and analyzing multi-source data to form a modularized template object comprises, Through intelligent analysis and knowledge extraction of multi-source data of the power enterprise, standardized configuration modes aiming at different equipment types and protection functions are automatically induced to form a template prototype; Converting the extracted knowledge into a structured template object; All templates are brought into a warehouse with version control function for management.
3. 3. The automatic modeling method of relay protection based on template matching and real-time parameter injection as claimed in claim 2, wherein the intelligent matching of the optimal protection template from the template library by the weighted matching algorithm and topology collaborative verification based on the multidimensional characteristic of the target equipment and the topological relation of the power grid comprises, Based on static attribute and dynamic information, constructing a multidimensional feature vector of target equipment, and intelligently deducing missing parameters through a topology reasoning engine; screening candidate templates from a template library based on the matching degree calculation of the multidimensional feature vector and the template metadata; And a topology collaborative verification mechanism based on a real-time power grid topology structure is introduced, the electric connection and protection coordination relation between the target equipment and the upstream and downstream equipment is analyzed, and the logic consistency verification is carried out on the candidate templates.
4. 4. The method for automatically modeling relay protection based on template matching and real-time parameter injection as claimed in claim 3, wherein the performing the logical consistency check on the candidate templates comprises, Based on the result of the logic consistency check, conflict resolution is performed to output a final matched protection template; and after the candidate templates are successfully checked, waiting for real-time parameter injection.
5. 5. The method for automatically modeling relay protection based on template matching and real-time parameter injection as claimed in claim 4, wherein deriving initial setting parameters of the relevant relay protection function based on the basic quantity data collected from the power system comprises, Basic quantity data of a protected circuit is obtained from an electric power system operation monitoring platform, wherein the basic quantity data comprise circuit impedance parameters, rated electric quantity and system short-circuit capacity; According to the short circuit calculation result of the power system and the rated current of the line, calculating the action current and the delay fixed value of the overcurrent protection according to the setting principle; Based on the line total impedance and the adjacent line impedance, respectively calculating the action impedance of each section of distance protection according to the setting principle of the protection range coefficient of each section; And organizing and formatting the obtained setting parameter set according to the structuring requirement of the optimal protection template, and preparing injection.
6. 6. The method for automatically modeling relay protection based on template matching and real-time parameter injection as claimed in claim 4, wherein the step of systematically verifying the initial setting parameters and correcting the initial setting parameters when the initial setting parameters do not meet the requirements to obtain final setting parameter sets comprises the steps of, Invoking a verification rule embedded in a corresponding template in the template library, and combining a real-time system state to verify the sensitivity, reliability and selectivity of the initial setting parameters at a system level; The verification comprises verifying the sensitivity of the overcurrent protection under the terminal fault and the reliability thereof under the maximum load, and verifying the range and the matching relation of the fixed values of each section of the distance protection; when the verification revealing parameters do not meet the protection matching requirements or the action performance indexes, correcting and performing iterative optimization on the relevant fixed values according to the verification conclusion; and after all the verification conditions are met, confirming to generate a protection setting parameter set.
7. 7. The method for automatically modeling relay protection based on template matching and real-time parameter injection as claimed in claim 4, wherein the step of injecting the final set of parameters into the optimal protection template and performing version curing and continuous evolution management on the template after injection comprises, Injecting the final setting parameter set after the verification is passed into the selected optimal protection template to generate a complete configuration model which can be directly issued to the protection device for execution; Version solidification is carried out on the configuration model with the completed parameter injection, unique version numbers are allocated, source tracing information is associated, a new base line version is formed, and the new base line version is stored in a template library; When the running mode or topology of the running system changes, an incremental updating mechanism of the template is triggered, and the existing version is quickly checked and iterated under the protection constraint condition.
8. 8. The relay protection automatic modeling system based on template matching and real-time parameter injection is applied to the relay protection automatic modeling method based on template matching and real-time parameter injection as claimed in any one of claims 1-7, and is characterized by comprising a multi-source data acquisition and analysis module, a knowledge extraction and template construction module, a multi-dimensional feature perception and topology reasoning module, a template intelligent matching and verification module, a setting parameter calculation and derivation module, a setting parameter intelligent verification module and a configuration generation and version management module; The multi-source data acquisition and analysis module is responsible for acquiring multi-source data of an electric power enterprise; the knowledge extraction and template construction module automatically generalizes standardized configuration modes aiming at different equipment types and protection functions through intelligent analysis and knowledge extraction of multi-source data of an electric power enterprise to form a template prototype; the multidimensional feature perception and topology reasoning module is used for constructing multidimensional feature vectors of the target equipment based on static attribute and dynamic information and intelligently deducing missing parameters through a topology reasoning engine; The template intelligent matching and checking module invokes a multidimensional weighted matching algorithm, performs similarity calculation on the characteristic vector of the target equipment and metadata of candidate templates in a template library, and screens out candidate templates with high comprehensive matching degree according to dynamically allocated weights; The setting parameter calculation and deduction module deducts initial setting parameters of overcurrent protection and distance protection according to basic quantity data acquired from the power system; The intelligent calibration module for the setting parameters is used for calibrating the sensitivity, the reliability and the selectivity of the initial setting parameters and correcting the initial setting parameters when the initial setting parameters do not meet the requirements to obtain a final setting parameter set; And the configuration generation and version management module is used for injecting the final setting parameter set into the optimal protection template, and carrying out version solidification and continuous evolution management on the template after injection.
9. 9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of a relay protection automatic modeling method based on template matching and real-time parameter injection as claimed in any one of claims 1 to 7.
10. 10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of a relay protection automatic modeling method based on template matching and real-time parameter injection as claimed in any one of claims 1 to 7.

Description

Relay protection automatic modeling method, system, equipment and medium based on template matching and real-time parameter injection Technical Field The invention relates to the technical field of relay protection automation of power systems, in particular to a relay protection automatic modeling method, a system, equipment and a medium based on template matching and real-time parameter injection. Background In the relay protection training and simulation process of the power system, the number of parameters of protection configuration is huge, the types are various, and part of parameters are frequently changed along with the operation mode, the system topology and the equipment state, so that great challenges are brought to maintenance and updating. The existing training system generally relies on manual item-by-item entry and maintenance protection fixed values, so that data lag and error rate are high, and labor cost is high. Meanwhile, due to the protection logic difference corresponding to different operation modes, templates are difficult to manage and trace, and a standardized and version control mechanism is lacked, so that the efficiency and the expandability of protection modeling are limited. In addition, the processing of missing parameters often depends on manual experience, and a systematic and automatic complement method is lacked, so that the integrity and accuracy of the model are affected. In view of the above, there is a need for a modeling method that can automatically identify device features, match standardized protection templates, achieve real-time parameter synchronization, and intelligently complement missing data. The method needs to have the capabilities of full-flow automation, version traceability, logic consistency verification and the like so as to improve the accuracy, consistency and maintenance efficiency of the construction of the protection model and provide reliable data base and logic guarantee for power relay protection training and operation simulation. Disclosure of Invention In view of the problems, the invention provides a relay protection automatic modeling method, a system, equipment and a medium based on template matching and real-time parameter injection. The method solves the technical problems that the configuration and modeling of relay protection parameters of a power system mainly depend on manual operation, the prior art has insufficient synchronous capability for real-time parameters, cannot automatically grasp setting values in an operation system, and causes parameters of a training system to lag behind actual operation, and the system also lacks an intelligent completion mechanism for missing parameters, still needs manual searching or estimation, and has low efficiency. The problem of inconsistent protection configuration in different operation modes is not solved effectively, and manual judgment and switching logic are often needed. In order to solve the technical problems, the invention provides a relay protection automatic modeling method based on template matching and real-time parameter injection, which comprises the following steps of, And constructing a standardized relay protection template library supporting versioning management, acquiring and analyzing multi-source data by the template library to form a modularized template object, and storing the modularized template object into a warehouse with a version tracing and rollback mechanism. Based on the multidimensional characteristic of the target equipment and the topological relation of the power grid, the optimal protection template is intelligently matched from the template library through the collaborative verification of a weighted matching algorithm and the topology. And deducing initial setting parameters of the relevant relay protection functions according to the basic quantity data acquired from the power system. And carrying out systematic verification on the initial setting parameters, and correcting when the initial setting parameters do not meet the requirements to obtain a final setting parameter set. And injecting the final setting parameter set into the optimal protection template, and carrying out version solidification and continuous evolution management on the template after injection. The invention is a preferable scheme of a relay protection automatic modeling method based on template matching and real-time parameter injection, wherein the construction of a standardized relay protection template library supporting versioning management, the template library is used for collecting and analyzing multi-source data to form a modularized template object, the method comprises the steps of, Through intelligent analysis and knowledge extraction of multi-source data of the power enterprise, standardized configuration modes aiming at different equipment types and protection functions are automatically induced, and a template prototype is formed. The extracted knowledge is conv