CN109710669B - Method for improving accuracy of full power grid model data based on check rule base - Google Patents
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Abstract
The invention relates to a method for improving the accuracy of full power grid model data based on a check rule base, and belongs to the technical field of power grids of power systems. The invention comprises the following steps: the method comprises the following steps: establishing a mapping definition table of each local dispatching heterogeneous system model: the flexibly configurable model definition mapping table converts the equipment models and attributes of various heterogeneous systems into a unified standard definition format to form a unified data model file; step two: planning and establishing a model checking rule base, and flexibly using partial checking rules of the rule base according to requirements to carry out comprehensive checking analysis on the generated whole network model; step three: and circularly carrying out the work of acquiring and verifying the whole network model. The problem that the efficiency is low by depending on manual experience calibration in the past is solved; through repeated iteration, the accuracy of the data of the whole power grid model is greatly improved until the accuracy reaches an acceptable range, and the problem that the accuracy of the data in a large power grid model heterogeneous system is difficult to guarantee is solved.
Description
Technical Field
The invention relates to a method for improving the accuracy of full power grid model data based on a check rule base, and belongs to the technical field of power grids of power systems.
Background
The power grid model is the basis of the software analysis of the power system; therefore, a correct and reliable grid model is the basis for automation and scheduling to work, and sufficient attention must be paid. At present, automatic EMS systems of provinces, companies and regions are built by a plurality of manufacturers, a system of hierarchical management, hierarchical control and distributed processing is formed, and how to efficiently integrate and acquire complete and accurate whole-network model data is required to be considered in order to comprehensively and accurately analyze and control an interconnected large power grid. At present, the difficulty of effectively integrating model data is high.
The electric power system is a transient whole, and when each stage of power grid is analyzed in real time, the influence of interconnected adjacent power grids and upper and lower stages of power grids is required. However, at the present stage, due to lack of resource sharing, models of adjacent power grids can only be simplified and equivalent to a certain extent when the power grids are analyzed and calculated, and the method can meet the actual engineering requirements in a certain precision range for sub-networks which are not closely connected, but is inaccurate for closely connected interconnected large power systems. Therefore, the model file-based method for fusing heterogeneous system models is a feasible scheme, but considering that the accuracy of data in each provincial and local dispatching heterogeneous system is difficult to guarantee, and the data definition of each heterogeneous system is inconsistent, the integrated full model file needs to be checked in detail, problems are fed back, and the model file is integrated again after being rectified. And iterating the steps until the full power grid model data with high accuracy is obtained.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for improving the accuracy of full power grid model data based on a check rule base.
The method for improving the accuracy of the full power grid model data based on the check rule base comprises the following steps:
the method comprises the following steps: establishing a mapping definition table of each local dispatching heterogeneous system model: the flexibly configurable model definition mapping table converts the equipment models and attributes of various heterogeneous systems into a unified standard definition format to form a unified data model file, and comprises the following steps:
the first step is as follows: the model definition mapping table is classified according to the equipment object types, the mapping fields of the specific attributes of each equipment are defined according to the structure of the equipment object table of each heterogeneous system, the definition of the equipment model mapping conversion table according to the requirement is completed, and the model mapping definition table with independent local transfers is formed;
the second step: reading a model mapping definition table of each local tone by using an ETL tool, combining each attribute field into a specific SQL sentence, reading specific data of a corresponding equipment object by using the SQL sentence, and writing a result into a standard unified model file;
the third step: uniformly sending the generated model files to a specific model integration directory, after obtaining model files of the provincial and local dispatching equipment, reading data of each region into an internal memory by using an ETL (extract transform load) tool to perform integration conversion of the model data, and writing the data into a target database;
Step two: planning and establishing a model checking rule base, and flexibly using partial checking rules of the rule base according to requirements to carry out comprehensive checking analysis on the generated whole network model;
step three: the work of acquiring and verifying the whole network model is carried out in a circulating mode, and the method comprises the following steps:
the first step is as follows: users in various regions analyze the file modification model according to the obtained abnormal data and resubmit the modified model file, and acquire the whole network model data again by using an ETL tool and perform addition, deletion and modification operations on the whole network model data written into the database to acquire the latest whole network model data;
the second step is that: on the basis of the previous step, the selected rule base is utilized again to carry out verification analysis on the whole network model data, and the process is iterated circularly until an accurate and reliable whole network data model is obtained;
the third step: and on the basis of the previous step, monitoring and analyzing the whole network model can be carried out according to the reliable whole power grid model.
In the second step, the comprehensive verification analysis is divided into three parts, namely, common data verification, service rule verification and node topological relation verification.
In a further limitation, in the second step, the comprehensive verification analysis includes the following steps:
The first step is as follows: according to the specific requirements of the generated whole network model, the equipment objects in the formed whole network model do not contain all the equipment object attributes, so that only necessary verification rules need to be selected to verify the equipment objects, a button is clicked to trigger verification work on the whole network model after the verification rules are selected, and the obtained abnormal data are classified and sorted according to two dimensions of the area to which the equipment belongs and the rule type;
the second step: and forming a verified abnormal data analysis file according to each region, distributing the generated abnormal data files to each region, and sending an alarm to prompt related personnel for processing.
The beneficial effects of the invention are: the method for improving the data accuracy of the full power grid model based on the check rule base can integrate models of various heterogeneous systems in a large power grid to form a complete model of the full power grid, and solves the problem that the models are not uniform; the model data accuracy analysis can be completed according to a specific and abundant configurable inspection rule base, provincial dispatches and problem analysis files of all the dispatches are formed according to the region to which the equipment belongs, and the problem that the efficiency is low due to manual experience verification in the past is solved; through repeated iteration, the accuracy of the data of the whole power grid model is greatly improved until the accuracy reaches an acceptable range, and the problem that the accuracy of the data in a large power grid model heterogeneous system is difficult to guarantee is solved.
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FIG. 1 is a flow chart of the full-network model integration and verification of the present invention.
Detailed Description
In order to make the object and technical solution of the present invention more apparent, the present invention will be further described in detail with reference to the following examples.
Example 1:
as shown in fig. 1, according to the method for improving accuracy of full power network model data based on the check rule base, firstly, model files of each local dispatching heterogeneous system are acquired from each local dispatching by using an ETL (e.g., a key) tool based on an established model mapping definition table, and the data are integrated to form the full power network model data. Because the whole network model data needs to be provided for monitoring, analysis and other applications, the data is accurate and abnormal data can be captured in time and fed back to all the local dispatches for processing. Therefore, a configurable flexible and comprehensive verification rule base needs to be established to verify the acquired full-network model data, classify and count the acquired abnormal data, distribute the abnormal data to each region and timely modify users in each region.
The method for improving the accuracy of the full power grid model data based on the check rule base comprises the following steps:
The method comprises the following steps: establishing a mapping definition table of each local heterogeneous system model: the flexibly configurable model definition mapping table converts the equipment models and attributes of various heterogeneous systems into a unified standard definition format to form a unified data model file, and comprises the following steps:
the first step is as follows: the model definition mapping table is classified according to the equipment object types, the mapping fields of the specific attributes of each equipment are defined according to the structure of the equipment object table of each heterogeneous system, the definition of the equipment model mapping conversion table according to the requirement is completed, and the model mapping definition table with independent local transfers is formed;
the second step is that: reading a model mapping definition table of each local tone by using an ETL tool, combining each attribute field into a specific SQL sentence, reading specific data of a corresponding equipment object by using the SQL sentence, and writing a result into a standard unified model file;
the third step: uniformly sending the generated model files to a specific model integration directory, after obtaining model files of the provincial and local dispatching equipment, reading data of each region into an internal memory by using an ETL (extract transform load) tool to perform integration conversion of the model data, and writing the data into a target database;
step two: planning and establishing a model checking rule base, and flexibly using partial checking rules of the rule base according to requirements to carry out comprehensive checking analysis on the generated whole network model;
Step three: the work of acquiring and verifying the whole network model is carried out in a circulating mode, and the method comprises the following steps:
the first step is as follows: users in various regions analyze the file modification model according to the obtained abnormal data and resubmit the modified model file, and acquire the whole network model data again by using an ETL tool and perform addition, deletion and modification operations on the whole network model data written into the database to acquire the latest whole network model data;
the second step is that: on the basis of the previous step, the selected rule base is utilized again to carry out verification analysis on the whole network model data, and the process is iterated circularly until an accurate and reliable whole network data model is obtained;
the third step: and on the basis of the previous step, monitoring and analyzing the whole network model can be carried out according to the reliable whole power grid model.
In the second step, the comprehensive verification analysis is divided into three parts, namely, common data verification, service rule verification and node topological relation verification.
In a further limitation, in the second step, the comprehensive verification analysis includes the following steps:
the first step is as follows: according to the specific requirements of the generated whole network model, the equipment objects in the formed whole network model do not contain all the equipment object attributes, so that only necessary verification rules need to be selected to verify the equipment objects, a button is clicked to trigger verification work on the whole network model after the verification rules are selected, and the obtained abnormal data are classified and sorted according to two dimensions of the area to which the equipment belongs and the rule type;
The second step: and forming a verified abnormal data analysis file according to each region, distributing the generated abnormal data files to each region, and sending an alarm to prompt relevant personnel to process.
The invention has the beneficial effects that: the method for improving the data accuracy of the full power grid model based on the check rule base can integrate models of various heterogeneous systems in a large power grid to form a complete model of the full power grid, and solves the problem that the models are not uniform; the model data accuracy analysis can be completed according to a specific and abundant configurable inspection rule base, provincial dispatches and problem analysis files of all the dispatches are formed according to the region to which the equipment belongs, and the problem that the efficiency is low due to manual experience verification in the past is solved; through repeated iteration, the accuracy of the data of the whole power grid model is greatly improved until the accuracy reaches an acceptable range, and the problem that the accuracy of the data in a large power grid model heterogeneous system is difficult to guarantee is solved.
Example 2:
the main content of the invention comprises: the method is characterized by researching how to define all equipment models and attribute data of heterogeneous systems in a unified manner, converting the equipment models and attributes of the heterogeneous systems into a unified standard definition format by utilizing a model mapping definition table to form a unified data model file, wherein the current IEC 61970 standard-based online distributed power grid model is a good choice, the defined format can be flexibly changed according to the requirements, and the requirements can be met only by reconfiguring the model mapping definition table.
The establishment of the check rule base after the research model is integrated is mainly divided into three parts, namely public data check, business rule check and node topological relation check.
The following check rule is introduced by taking a station and a current transformer as examples and defined as follows:
checking whether the area of the station is filled in, wherein the attribute is a necessary item; whether the voltage class of the plant station is filled is checked, and the attribute is also an indispensable item; checking whether the factory contact telephone conforms to a fixed telephone number rule with a format conforming to a mobile phone number or a band number, wherein the specific regular expression comprises the following steps:
(^1[3,4,5,7,8]\d{9}$)|(^0[0-9]{2,3}-([2-9][0-9]{6,7})+(-[0-9]{1,4})？$))；
and (3) checking whether the factory station electronic mailbox conforms to the rule that the format conforms to the electronic mailbox (a specific regular expression:
^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$]；
checking whether the factory post code is a six-digit number, wherein the specific regular expression comprises the following steps:
^\d{6}$)。
the voltage of the current transformer is less than or equal to the highest voltage type of the plant station;
the operating state of the current transformer meets the requirement of a rule, and the operating state is judged according to the commissioning date and the retirement date;
commissioning date < current date, running status not equal (planning, build); retirement date < current date, running status In (retired );
the retired date of the current transformer meets the rule requirement (if the operation state is retired, the retired date is filled with the current transformer and is later than the commissioning date);
The secondary current rated value of the current transformer is 1A or 5A;
the primary current rating of the current transformer is within the range of 5-25000A.
The method is characterized by researching how to efficiently apply a certain attribute of a certain type of equipment object of the whole network model data to a corresponding rule, firstly forming a fixed-name dynamic library file by using the specific rule, and developing a distinguishable fixed-name dynamic library by all the rules. And then storing the data of the full-power-grid model file into a memory, wherein the full-power-grid model file mainly comprises equipment data such as a transformer, a winding, a switch, a disconnecting link, a grounding disconnecting link, a bus, a capacitor, a reactor, a line, a load and the like, and a good ELT indexing mechanism is proposed, so that all data of a certain type of attribute of a certain equipment object can be conveniently, quickly and accurately positioned and obtained. And then, a configuration file corresponding to the attribute and the rule of the equipment object is established in order to accurately transmit the acquired attribute data of certain equipment into a dynamic library of a specific verification rule for verification. And finally, comprehensively checking the whole network model data to form an analysis result file of abnormal data, and distributing the found abnormal information to each area according to the area to which the data of the analysis result belongs.
The method for improving the data accuracy of the whole power grid model based on the check rule base can integrate models of various heterogeneous systems in a large power grid to form a complete model of the whole power grid, and solves the problem that the models are not uniform; the model data accuracy analysis can be completed according to a specific and abundant configurable inspection rule base, provincial dispatches and problem analysis files of all the dispatches are formed according to the region to which the equipment belongs, and the problem that the efficiency is low due to manual experience verification in the past is solved; through repeated iteration, the accuracy of the data of the whole power grid model is greatly improved until the accuracy reaches an acceptable range, and the problem that the accuracy of the data in a large power grid model heterogeneous system is difficult to guarantee is solved.
The invention can be widely applied to the occasions of the power grid of the power system.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. A method for improving the accuracy of full power grid model data based on a check rule base is characterized by comprising the following steps:
The method comprises the following steps: establishing a mapping definition table of each local dispatching heterogeneous system model: the flexibly configurable model definition mapping table converts the equipment models and attributes of various heterogeneous systems into a unified standard definition format to form a unified data model file, and comprises the following steps:
the first step is as follows: the model definition mapping table is classified according to the equipment object types, the mapping fields of the specific attributes of each equipment are defined according to the structure of the equipment object table of each heterogeneous system, the definition of the equipment model mapping conversion table according to the requirement is completed, and the model mapping definition table with independent local transfers is formed;
the second step is that: reading a model mapping definition table of each local tone by using an ETL tool, combining each attribute field into a specific SQL sentence, reading specific data of a corresponding equipment object by using the SQL sentence, and writing a result into a standard unified model file;
the third step: uniformly sending the generated model files to a specific model integration directory, after obtaining model files of the provincial and local dispatching equipment, reading data of each region into an internal memory by using an ETL (extract transform load) tool to perform integration conversion of the model data, and writing the data into a target database;
step two: planning and establishing a model checking rule base, and flexibly using partial checking rules of the rule base according to requirements to carry out comprehensive checking analysis on the generated whole network model;
Step three: the work of acquiring and verifying the whole network model is carried out in a circulating mode, and the method comprises the following steps:
the first step is as follows: users in various regions analyze the file modification model according to the obtained abnormal data and resubmit the modified model file, and acquire the whole network model data again by using an ETL tool and perform addition, deletion and modification operations on the whole network model data written into the database to acquire the latest whole network model data;
the second step is that: on the basis of the previous step, the selected rule base is utilized again to carry out verification analysis on the whole network model data, and the process is iterated circularly until an accurate and reliable whole network data model is obtained;
the third step: and monitoring and analyzing the whole network model according to the reliable whole network model on the basis of the previous step.
2. The method for improving the accuracy of the full-grid model data based on the check rule base according to claim 1, wherein in the second step, the comprehensive check analysis is divided into three parts, namely common data check, service rule check and node topology relation check.
3. The method for improving the accuracy of the full-grid model data based on the verification rule base according to claim 2, wherein in the second step, the comprehensive verification analysis comprises the following small steps:
The first step is as follows: according to the specific requirements of the generated whole network model, the equipment objects in the formed whole network model do not contain all the equipment object attributes, so that the equipment objects are verified only by selecting a verification rule, a button is clicked to trigger the verification work of the whole network model after the verification rule is selected, and the obtained abnormal data are classified and sorted according to two dimensions of the area to which the equipment belongs and the rule type;
the second step is that: and forming a verified abnormal data analysis file according to each region, distributing the generated abnormal data files to each region, and sending an alarm to prompt relevant personnel to process.
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