CN111177268A - Method for realizing self-defined real-time library of power monitoring system - Google Patents
Method for realizing self-defined real-time library of power monitoring system Download PDFInfo
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Abstract
The invention relates to a method for realizing a self-defined real-time library of a power monitoring system, which comprises the steps of selecting equipment tables, table fields and field data types from a power grid equipment model library according to application requirements, or self-defining the table fields and the field data types, designating field data sources, completing the definition of each memory table mode required by application, and initializing each memory table empty table; loading the power grid equipment model into a user-defined real-time library according to the mode information of the memory table, and completing initialization of memory table records; and requesting measurement real-time data from the real-time data center according to the self-defined real-time base table mode information and the power grid equipment model information, and updating the measurement real-time data into corresponding fields of the self-defined real-time base table. The invention self-defines the structure and the field definition of the real-time base table, completes the initialization and the update of the self-defined real-time base table power grid equipment model, completes the acquisition and the update of new real-time data, further completes the assembly of the model and the real-time data, and simplifies the development process of application.
Description
Technical Field
The invention belongs to the technical field of power monitoring systems, and particularly relates to a method for realizing a user-defined real-time library defined by a power monitoring system as required.
Background
In the power monitoring system, after the system is put into operation, the user demand is still vigorous. In order to solve the problem of user requirements, when the number of applications is increased, a power grid equipment model and measurement real-time data corresponding to the power grid equipment model need to be increased. Data of the power grid equipment model of the power monitoring system are uniformly stored in a power grid equipment model library, and fields are marked according to application types, such as SCADA (supervisory control and data acquisition), PAS (PASs and classification), DTS (delay tolerant system) and the like. And when each application program is started, loading the power grid equipment model according to the application type, and analyzing and calculating after acquiring real-time data from the real-time data center.
The method mainly has three problems in the traditional real-time library processing mode, namely, when the attribute field of the power grid equipment needs to be expanded, the code for loading the power grid equipment model needs to be modified; secondly, when the expansion measurement of the power grid equipment is required, the code for loading the real-time data also needs to be modified; thirdly, computing and analyzing the application, which needs to encode and load the power grid equipment model and the real-time data and assemble a real-time library, affects the application development efficiency.
In a traditional real-time library definition mode, the same data table structure is used for state estimation, power grid load flow and static safety analysis, the same real-time library operation code is used, the extension attribute and measurement of power grid equipment all need to be modified, and other applications can be influenced by the single application extension attribute and measurement modification code. Meanwhile, as the power grid equipment model field or the real-time data field is not distinguished, the power grid equipment model loading and the real-time data initialization are required to be completed in a hard coding mode. Based on the traditional real-time library mode, flexible configuration can not be carried out according to the application requirement, and complicated code and program modification work is required.
Disclosure of Invention
Aiming at the technical problems, the invention provides an on-demand self-defining method for a self-defining real-time library of an electric power monitoring system, which mainly solves the problems of different analysis and calculation application models, real-time data differentiation and convenient expansion, and secondly solves the problem of model and real-time data assembly, so that the analysis and calculation application is ensured to be concentrated in analysis and calculation, and the application development efficiency is improved.
In the present invention, the following terms are used:
traditional real-time libraries: the conventional real-time library refers to a commonly used memory database in the power monitoring system, and the conventional real-time library is provided with a plurality of memory tables, the memory table structure of the conventional real-time library is consistent with that of a relational library, and the conventional real-time library does not have a self-definition function and cannot distinguish a power grid equipment model field or a measurement field in a self-description mode;
self-defining a real-time library: the method comprises the steps that a plurality of memory table data are customized according to needs, a power grid equipment model field, a measurement field or an application maintenance field are distinguished in a self-description mode, and automatic model synchronization, automatic real-time data synchronization and the like are achieved;
self-defining real-time library mode information: the mode information is the definition of the memory table, records the table name, the field type and other information, can finish the initialization of the empty table of the memory table according to the mode information, and the application can finish the access to the memory table according to the mode information;
self-defining real-time library model information: the model information refers to a power grid equipment model and is used for describing power grid equipment, and one record corresponds to one physical equipment;
the real-time data center: the system is characterized by comprising a data center for storing real-time collected measurement (such as active and reactive power of a line) information of power grid equipment, and providing data storage and data release functions;
power grid equipment model library: the system refers to a database for storing a power grid equipment model, and generally adopts a relational database for storage;
a power grid equipment model: the data records describe the information of the power grid equipment, and one record corresponds to one physical equipment generally;
measuring real-time data: the real-time values measured by the collected power grid equipment, such as line active real-time values, reactive real-time values and the like;
power grid equipment model information: the information describing the structure of the data table in the power grid equipment model base comprises a table name, a field type and the like, and the initialization of the empty table of the power grid equipment model in the relational base can be completed according to the power grid equipment model information;
measurement type information: the method describes the corresponding relation between the acquisition quantity and the power grid equipment, such as line active power, line reactive power, generator active power and the like.
The technical scheme adopted by the invention is as follows:
a method for realizing a self-defined real-time library of a power monitoring system comprises the following steps:
step 1, selecting an equipment table, a table field and a field data type from a power grid equipment model base according to application requirements, or customizing the table field and the field data type, designating a field data source, completing the definition of each memory table mode required by application, and initializing each memory table empty table according to stored mode information of a customized real-time base;
step 2, a power grid equipment model loading process: loading the power grid equipment model into a user-defined real-time library according to the mode information of the memory table, and completing initialization of memory table records;
and 3, measuring real-time data synchronization, namely requesting the real-time data to be measured from the real-time data center according to the self-defined real-time base table mode information and the power grid equipment model information, and updating the measured real-time data into corresponding fields of the self-defined real-time base table.
The invention has the beneficial effects that:
the invention completes the self-defined real-time base table structure and field definition through the mode definition process, completes the initialization and the update of the self-defined real-time base table power grid equipment model through the power grid equipment model loading process, and completes the acquisition and the update of new real-time data through the measurement real-time data synchronization process, thereby completing the assembly of the model and the real-time data. The analysis and calculation application loads the power grid equipment model and the power grid equipment measurement data section from the user-defined real-time library in a two-dimensional table mode to perform analysis and calculation, so that the development process of the application is simplified.
1) When a certain analysis application needs to expand the model, only the self-defined real-time library mode definition used by the certain analysis application needs to be modified, other analysis applications are not affected, and the problem that the whole large-scale application is redeployed due to the expansion of a certain analysis application calculation model is solved;
2) the modeling mode that the traditional equipment collects measurement as the equipment attribute is changed, and the free expansion of the measurement type is realized;
3) the problem of measurement real-time data synchronization is solved, meanwhile, the assembly of a power grid equipment model and measurement real-time data is achieved, a two-dimensional table mode is adopted to provide the model and the data for the application, the application development is liberated from low-efficiency and repetitive data acquisition, and the application development efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are specific embodiments of the invention, and that other drawings within the scope of the present application can be obtained by those skilled in the art without inventive effort.
FIG. 1 is a flow chart of steps of a custom live library initialization process of an embodiment of the present invention;
FIG. 2 is a flowchart of the grid device model loading process steps of an embodiment of the present invention;
FIG. 3 is a flowchart illustrating the steps of a synchronization process for measuring real-time data according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the embodiment of the invention, a user-defined real-time library is defined and stored according to needs, and the content in the user-defined real-time library is a plurality of memory table data. The method for defining the custom real-time library according to the requirement is as follows:
and realizing the mode information definition of the user-defined real-time library by adopting an XML format file, and finishing the definition of the memory table structure and the field of the user-defined real-time library.
The self-defined real-time library mode information comprises: table number (tableNo), table name (tableNameEng, tableNameChn), corresponding power grid equipment model base table name (srcTable), field number (fieldNo), field name (fieldNameEng, fieldNameChn), whether key word (isKey), field data type (allownll, dataType, fieldLen), field data source (srcttype), and the like. And identifying that the field is from the power grid equipment model or the measured real-time data through a field data source. When the field data source is a power grid equipment model, table names and field name (src field) information of a power grid equipment model library are defined; when the field data source is measuring real-time data, a measuring type (measType), a real-time data type (realType), a data updating period (flash ) and the like are defined; when the field data source is not specified, the field is indicated as the self-maintenance field of the application.
The XML format file sample defining the custom real-time library is as follows:
<？xml version＝"1.0"encoding＝"UTF-8"？>
<table>
< tableedesc tablem ═ 1 "tableenameng ═ breaker" tableenamchn "
srcTable＝"SG_DEV_BREAKER_B"/>
<field>
< fielddesc fieldNo ═ 1"
allowNull＝"0"dataType＝"long long"fieldLen＝"8"srcType＝"0"srcField＝"ID"/>
< fielddesc fieldNo ═ 2: "fieldNameEng ═ status" fieldNameChn ═ status "isKey ═ 0"
allowNull＝"1"dataType＝"int"fieldLen＝"4"srcType＝"1"measType＝"0"realType＝"0"
flashType＝"0"flashPeriod＝"1000"/>
<fielddesc fieldNo＝"3"…/>
</field>
<tabledesc tableNo＝"2"…/>
</table>
A method for realizing a self-defined real-time library of a power monitoring system comprises the following steps:
step 1, selecting an equipment table, a table field and a field data type from a power grid equipment model base according to application requirements, or customizing the table field and the field data type, designating a field data source, completing definition of each memory table mode required by application, and initializing each memory table empty table according to stored mode information of a customized real-time base.
As shown in fig. 1, it is a flowchart of the steps of the initialization process of the custom live library in the embodiment of the present invention, and specifically includes the following steps:
1.1, loading power grid equipment model information including table names, field data types and the like from a power grid equipment model library;
1.2, loading the measurement type information of the power grid equipment from a measurement type definition table of a power grid equipment model library;
1.3, loading the existing mode information from a custom real-time library;
1.4, modifying the self-defined real-time library mode information according to the business needs, and completing the redefinition of the self-defined real-time library table and the fields as required;
1.5, storing the modified self-defined real-time library mode information into a self-defined real-time library;
and 1.6, initializing the user-defined real-time library according to the modified user-defined real-time library mode information.
Step 2, a power grid equipment model loading process: the method comprises the following steps of loading a power grid equipment model into a custom real-time library according to the mode information of a memory table, and completing initialization of memory table records, wherein the power grid equipment model loading process mainly comprises the following two steps:
firstly, reading configuration information of each memory table from a self-defined real-time library mode definition file, finding out fields from a power grid equipment model, reading corresponding data table records and related fields of the power grid equipment model library according to the table name and the field list of the power grid equipment model library, and filling the data table records and the related fields into an empty memory table.
Then, when the records in the relevant table of the power grid equipment model base change, the power grid equipment model information can be read again by receiving the model updating message or regularly re-reading the power grid equipment model base, and the difference records (including addition, deletion and modification) are updated into the user-defined real-time base by comparing the model updating message with the user-defined real-time base.
Fig. 2 is a flowchart illustrating steps of a power grid device model loading process according to an embodiment of the present invention. The model loading process specifically comprises the following steps:
2.1, loading the mode information of the memory base table from the user-defined real-time base;
2.2, after the mode information of the memory base table is loaded successfully, loading the power grid equipment model from the power grid equipment model base according to the mode information of the memory base table;
2.3, updating the power grid equipment model into a custom real-time library;
2.4, starting a model updating message receiving and processing thread after the power grid equipment model is successfully updated to the custom real-time library;
2.4.a) subscribing to a message bus for a power grid equipment model update message;
2.4.b) circularly waiting for receiving the power grid equipment model updating message;
2.4.c) loading the power grid equipment model information from the power grid equipment model library after receiving the power grid equipment model updating message;
and 2.4.d) comparing the model information with the power grid equipment model information in the custom real-time library, and writing the different power grid equipment model information into the custom real-time library.
Step 3, a measured real-time data synchronization process, namely requesting measured real-time data from a real-time data center according to the self-defined real-time base table mode information and the power grid equipment model information, and updating the measured real-time data into corresponding fields of a self-defined real-time base, wherein the data synchronization process mainly comprises the following four parts:
firstly, reading configuration information of each memory table from a self-defined real-time library mode definition file, and finding out fields from measured real-time data, and information such as a power grid equipment measurement type, a real-time data type (SCADA data, state estimation data and the like), a data updating period and the like. And requesting to measure real-time data from the real-time data center according to the information such as the unique equipment identification, the equipment measurement type, the real-time data type and the like, and updating the real-time data to corresponding fields of the memory table.
And secondly, regularly requesting real-time data from the real-time data center according to the data updating period during normal operation, and updating the real-time data to corresponding fields of the real-time database.
And thirdly, when the power grid equipment model is updated, newly added memory table records are searched, and increment requests real-time data from the real-time data center.
And finally, detecting the connection state with the real-time data center at regular time, automatically reconnecting when the connection is abnormal, requesting full data from the real-time data center, comparing the full data with the state stored in the real-time library, and updating the difference information into the custom real-time library to ensure the data consistency.
Fig. 3 is a flowchart illustrating steps of a measured real-time data synchronization process according to an embodiment of the invention. The time measurement real-time data synchronization process specifically comprises the following steps:
3.1, loading the mode information of the memory base table from the user-defined real-time base;
3.2, loading the model information of the power grid equipment and the measurement type information of the equipment from the user-defined real-time library;
3.3, if the data updating period is configured to be the timing updating, starting a measurement data timing updating processing thread; requesting measurement real-time data from a real-time data center at regular time, and writing the measurement real-time data into a custom real-time library; otherwise, executing step 3.4;
3.4, if the data updating period is configured to be real-time updating, starting a real-time updating processing thread of the measured data;
3.4.a) subscribing measurement real-time data to the real-time data center according to the power grid equipment model and the power grid equipment measurement type;
3.4.b) cyclically waiting for receiving measurement real-time data;
3.4.c) writing the measured real-time data into the self-defined real-time library after receiving the measured real-time data.
In the embodiment of the invention, the real-time library in the attached drawing refers to a self-defined real-time library.
Finally, it is to be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, and the scope of the present invention is not limited thereto. Those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.
Claims (9)
1. A method for realizing a self-defined real-time library of a power monitoring system is characterized by comprising the following steps:
step 1, selecting an equipment table, a table field and a field data type from a power grid equipment model base according to application requirements, or customizing the table field and the field data type, designating a field data source, completing the definition of each memory table mode required by application, and initializing each memory table empty table according to stored mode information of a customized real-time base;
step 2, a power grid equipment model loading process: loading the power grid equipment model into a user-defined real-time library according to the mode information of the memory table, and completing initialization of memory table records;
step 3, measuring real-time data synchronization process: and requesting measurement real-time data from the real-time data center according to the self-defined real-time base table mode information and the power grid equipment model information, and updating the measurement real-time data into corresponding fields of the self-defined real-time base table.
2. The method for implementing the custom real-time library of the power monitoring system according to claim 1, wherein the custom real-time library is defined and stored as required by an XML format file, and the content in the custom real-time library is a plurality of memory table data.
3. The method for implementing the customized real-time library of the power monitoring system according to claim 2, wherein the customized real-time library mode information comprises: the system comprises a table number, a table name, a corresponding grid equipment model library table name, a field number, a field name, whether keywords are included, a field data type and a field data source.
4. The method for realizing the self-defined real-time library of the power monitoring system according to claim 3, wherein when the field data source is a power grid equipment model, table names and field name information of the power grid equipment model library are defined; when the field data source is measurement real-time data, a measurement type, a real-time data type and a data updating period are defined; when the field data source is not specified, the field is indicated as the self-maintenance field of the application.
5. The method for implementing the custom real-time library of the power monitoring system according to any one of claims 1 to 4, wherein the step 1 specifically comprises the following steps:
1.1, loading power grid equipment model information including table names, field names and field data types from a power grid equipment model library;
1.2, loading the measurement type information of the power grid equipment from a measurement type definition table of a power grid equipment model library;
1.3, loading the existing mode information from a custom real-time library;
1.4, modifying the self-defined real-time library mode information according to the business needs, and completing the redefinition of the self-defined real-time library table and the fields as required;
1.5, storing the modified self-defined real-time library mode information into a self-defined real-time library;
and 1.6, initializing the user-defined real-time library according to the modified user-defined real-time library mode information.
6. The method for implementing the custom real-time library of the power monitoring system according to any one of claims 1 to 4, wherein the step 2 specifically comprises the following steps:
2.1, loading the mode information of the memory base table from the user-defined real-time base;
2.2, after the mode information of the memory base table is loaded successfully, loading the power grid equipment model from the power grid equipment model base according to the mode information of the memory base table;
2.3, updating the power grid equipment model into a custom real-time library;
and 2.4, starting a model updating message receiving and processing thread after the power grid equipment model is updated to the user-defined real-time library successfully.
7. The method for implementing the custom real-time library of the power monitoring system according to claim 6, wherein the model update message receiving and processing thread in step 2.4 specifically includes the following steps:
2.4.a) subscribing to a message bus for a power grid equipment model update message;
2.4.b) circularly waiting for receiving the power grid equipment model updating message;
2.4.c) loading the power grid equipment model information from the power grid equipment model library after receiving the power grid equipment model updating message;
and 2.4.d) comparing the model information with the power grid equipment model information in the custom real-time library, and writing the different power grid equipment model information into the custom real-time library.
8. The method for implementing the custom real-time library of the power monitoring system according to any one of claims 1 to 4, wherein the step 3 specifically comprises the following steps:
3.1, loading the mode information of the memory base table from the user-defined real-time base;
3.2, loading the model information of the power grid equipment and the measurement type information of the equipment from the user-defined real-time library;
3.3, if the data updating period is configured to be the timing updating, starting a measurement data timing updating processing thread; requesting measurement real-time data from a real-time data center at regular time, and writing the measurement real-time data into a custom real-time library; otherwise, executing step 3.4;
and 3.4, if the data updating period is configured to be updated in real time, starting a real-time updating processing thread of the measurement data.
9. The method for implementing the custom real-time library of the power monitoring system according to claim 8, wherein the real-time data update processing thread in the step.3.4 specifically comprises the following steps:
3.4.a) subscribing measurement real-time data to the real-time data center according to the power grid equipment model and the power grid equipment measurement type;
3.4.b) cyclically waiting for receiving measurement real-time data;
3.4.c) writing the measured real-time data into the self-defined real-time library after receiving the measured real-time data.
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