CN108874985B - Distributed analysis configuration method for SCD (substation configuration description) file of intelligent substation - Google Patents
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Abstract
The invention discloses a distributed analysis configuration method of an intelligent substation SCD file, which comprises the following steps: (1) analyzing the SCD file in a SAX mode; (2) extracting an SCD index DOM tree from the SCD file; (3) splitting a character string text of the SCD file into a plurality of sub character string texts and storing the sub character string texts in a memory; (4) establishing a mapping table of an SCD index DOM tree and each substring text; (5) and searching the substring text according to the mapping table, and completing the functions of analysis and configuration in a loading, updating and combining manner. The invention combines the advantages of SAX and DOM, solves the problem that the SCD file with larger volume is difficult to analyze and configure when the memory resource is limited, effectively improves the configuration and debugging efficiency of the future large-scale intelligent station, and has high engineering practical value.
Description
Technical Field
The invention relates to a distributed analysis configuration method for an intelligent substation SCD file, which is applied to the technical field of intelligent substation automation.
Background
An intelligent Substation Configuration Description (SCD) file is an important basis for normal operation, daily operation and engineering management of an intelligent substation, and is generally generated through configuration of an intelligent substation system configuration tool. With the increasing maturity of the intelligent substation technology and the increasing scale of the intelligent substation, the SCD file is also gradually increased, so that the parsing and configuration work becomes more difficult.
The most common parsing and processing methods of the SCD file are DOM and SAX methods. The SAX analysis mode has higher efficiency and performance, and can analyze the document larger than the system memory; the DOM mode allows changes to be made to data and structures, and the node-XML text mutual conversion can be conveniently realized by the aid of a bidirectional access and traversal mechanism. But neither of them can accomplish the parsing and configuration of a larger SCD file.
Patent document No. CN104598628A discloses an intelligent substation SCD parsing method based on SAX, which mainly uses a callback function defining mode to complete parsing and display parsing results, and since the SAX mode does not perform data storage, secondary traversal or operation cannot be performed after parsing is completed, and even the method cannot be applied to SCD configuration functions.
Patent document No. CN104346474A discloses a method for quickly parsing an SCD file of an intelligent substation, which mainly uses a method for parsing a string by using positioning offset search, and the application range of the method is an embedded system, and is more prone to parsing and extracting an IED part, and cannot be applied to an SCD configuration function.
Patent document No. CN104750825A discloses a method for rapidly parsing an SCD file in an intelligent substation, which mainly adopts deep parsing, shallow copying and global hash table construction to search node data of the SCD file, abandons a DOM tree and builds another tree structure with less resource consumption, but also loses the functions of deep copying in the DOM tree, node content updating, and node-to-string text conversion, etc., although memory consumption can be reduced, and cannot be well applied to the configuration function of SCD.
Disclosure of Invention
The invention provides a distributed analysis configuration method of an intelligent substation SCD file, which aims to: and the functions of analyzing and configuring the SCD file of the intelligent substation are completed with less memory overhead.
A distributed analysis configuration method for an intelligent substation SCD file comprises the following steps:
(1) analyzing the SCD file in a SAX mode;
(2) extracting an SCD index DOM tree from the SCD file;
(3) splitting a character string text of the SCD file into a plurality of sub character string texts and storing the sub character string texts in a memory;
(4) establishing a mapping table of an SCD index DOM tree and each substring text;
(5) and searching the substring text according to the mapping table, and completing the functions of analysis and configuration in a loading, updating and combining manner.
As a further improvement of the above method, in steps (1) and (2), the SCD file is loaded in an SAX manner, XML format verification is performed during the loading process, and the following nodes are extracted by defining a SAX callback function manner: the method comprises the steps that a Header, a substtation, Communication, a plurality of sub networks, a plurality of IEDs and DataTypetemplates nodes generate an SCD index DOM tree according to the sequence specified in the SCD.
As a further improvement of the method, when loading the SCD file in SAX mode, if loading a new SCD file, then opening an SCD of a basic frame;
when the XML format is checked, the subsequent step operation is refused for the file with the non-XML format, and an alarm prompt is directly given;
when the SCD index DOM tree is generated, a root node named SCL is created, a Header, a substtation, Communication, a plurality of IEDs and DataTypetemplates nodes are sequentially added to serve as child nodes of the root node, a plurality of SubNetwork nodes are added to serve as child nodes of Communication, and the SCD index DOM tree is formed.
As a further improvement of the method, the SCD character string text is divided into an SCD head, a Header section, a substtation section, a Communication section, a plurality of IED sections, a DataTypeTemplates section and an SCD tail character string text in a mode of searching keywords.
The specific method comprises the following steps:
the SCD Header is the content before the string "< Header";
the Header section is the content from the character string "< Header" to the character string "</Header >";
the substtation section is the content from the character string "< substtation" to the character string "</substtation >";
the Communication section is the content from the character string "< Communication" to the character string "</Communication >";
there are several IED segments, each starting with a string "< IED" and ending with the first "</IED >" after it;
the DataTypetemplates segment is the content from the character string "< DataTypetemplates" to the character string "</DataTypetemplates >";
the SCD tail is the content after the string "</DataTypetemplates >".
As a further improvement of the above method, the SCD index DOM tree includes the following nodes: a Header, a Substation, a Communication, a plurality of IEDs and DataTypetemplates nodes;
the split SCD string text forms a plurality of sub-string texts including: a Header section, a substtation section, a Communication section, a plurality of IED sections and a DataTypeTemplates section;
the mapping mode of the step (4) is as follows:
establishing a corresponding relation between a Header node in the SCD index DOM tree and a Header section character string text;
establishing a corresponding relation between the substtation nodes and substtation section character string texts;
establishing a corresponding relation between the Communication node and the Communication field character string text;
establishing a one-to-one correspondence relationship between a plurality of IED nodes and a plurality of IED field character string texts respectively;
and establishing a corresponding relation between the DataTypetemplates node and the DataTypetemplates field character string text.
As a further improvement of the method, a sub-string text corresponding to the required operation content is searched according to a mapping table, the partial sub-string text is loaded to form a local DOM tree, the content of the local DOM tree is changed in a DOM modification mode, the conversion from the local DOM tree to the corresponding sub-string text is realized through nodes and a text conversion interface in a DOM mechanism, then memory resources occupied by the local DOM tree are released, and the periodic one-time configuration work is completed;
and recombining the partial character string texts into a complete SCD character string text, and providing the complete SCD character string text for the SAX mode to realize Schema check or store the complete SCD character string text as an SCD file.
As a further improvement of the above method, when a certain configuration of the SCD needs to be edited, parsing the corresponding character string text in a DOM manner to form a local DOM tree related to editing, and after the modification is completed, overwriting the local DOM tree related to editing back to the character string text and releasing the local DOM tree related to editing;
when a certain content needs to be searched, analyzing the corresponding character string text in a DOM mode to form a local DOM tree related to the search, searching by utilizing a traversal mechanism of the DOM, finishing the search, and releasing the local DOM tree related to the search after the subsequent search does not relate to the character string text any longer;
when an ICD file needs to be imported, after an IED node of the ICD file is added to an existing IED node of an SCD index DOM tree, an IED field character string text is added to a newly allocated memory space, and a mapping relation table is updated; loading the Communication section text to form a local DOM tree related to the Communication section, and updating the Communication section text after adding the Communication parameters in the ICD to the corresponding position of the local DOM tree related to the Communication section; loading the text of the DataTypetemplates segment to form a local DOM tree related to the DataTypetemplates segment, adding a data type template in the ICD to the corresponding position of the local DOM tree related to the DataTypetemplates segment, updating the text of the DataTypetemplates segment, and then releasing all the local DOM trees;
when the Schema check is needed, recombining the text of each part of the character string into a complete text of the SCD character string, and carrying out the Schema check on the text of the SCD character string in an SAX mode;
when a CID/CCD file needs to be exported, loading a Communication section text, a corresponding IED section text, an external IED section text required by virtual circuit configuration and a DataTypetemplates section text, respectively generating a local DOM tree exported by the CID/CCD for each part of text, and releasing all the local DOM trees exported by the CID/CCD after exporting;
when the SCD file needs to be saved, the existing local DOM tree is updated to the character string text of the corresponding part, and the SCD character string text is recombined and saved as the SCD file.
Compared with the prior art, the invention has the following positive effects: (1) the analysis process is changed from the whole analysis when the system is opened to the local analysis triggered by the action, namely, the whole is broken into parts, and the parts are recombined into the required content for use when the system needs to be searched, checked or stored, namely, the whole is broken into parts, so that the advantages of DOM and SAX modes are really combined, the problem that the SCD file with larger volume is difficult to analyze and configure when the memory resources are limited is solved, the configuration and debugging efficiency of a future large-scale intelligent station is effectively improved, and the system has high engineering practical value; (2) in the invention, the SCD files are uniformly configured in the memory in a mode of dividing the whole into parts and then dividing the whole into parts, thereby not only having high efficiency, but also avoiding the possible conflict problem during final combination and the problem that the functions of the schema, engineering standardization check and the like which need to be complete SCD files cannot be realized.
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FIG. 1 is a schematic flow chart of an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is explained in detail in the following with the accompanying drawings:
as shown in fig. 1, a distributed parsing configuration method for an intelligent substation SCD file includes the steps of:
(1) loading and analyzing the SCD file in an SAX mode, and if a newly-built SCD file is loaded, opening the SCD of a basic frame; XML format verification is carried out in the loading process, subsequent step operation is refused for files with non-XML formats, and warning prompts are directly given; and analyzing the SCD file to obtain an SCD character string text.
(2) Extracting an SCD index DOM tree: reading in the SCD file after verification in a character string text mode, and extracting the following nodes (only extracting the nodes and not including child nodes) by using a mode of defining SAX callback function: generating an SCD index DOM tree according to the sequence specified in the SCD by a Header, a substtation, Communication, a plurality of SubNetworks, a plurality of IEDs and DataTypetemplates node;
when the SCD index DOM tree is generated, a root node named SCL is created, a Header, a substtation, Communication, a plurality of IEDs and DataTypetemplates nodes are sequentially added to serve as child nodes of the root node, a plurality of SubNetwork nodes are added to serve as child nodes of Communication, and the SCD index DOM tree is formed.
(3) Splitting a character string text of the SCD file into a plurality of sub-character string texts, and storing the sub-character string texts in a memory: splitting the SCD character string text into an SCD head, a Header section, a substtation section, a Communication section, a plurality of IED sections, a DataTypetemplates section and an SCD tail character string text in a keyword searching mode; specifically, the method comprises the following steps:
the SCD Header is the content before the string "< Header";
the Header section is the content from the character string "< Header" to the character string "</Header >";
the substtation section is the content from the character string "< substtation" to the character string "</substtation >";
the Communication section is the content from the character string "< Communication" to the character string "</Communication >";
there are several IED segments, each starting with a string "< IED" and ending with the first "</IED >" after it;
the DataTypetemplates segment is the content from the character string "< DataTypetemplates" to the character string "</DataTypetemplates >";
the SCD tail is the content after the string "</DataTypetemplates >".
(4) Establishing a mapping table of the SCD index DOM tree and each substring text:
establishing a corresponding relation between a Header node in the SCD index DOM tree and a Header section character string text;
establishing a corresponding relation between the substtation nodes and substtation section character string texts;
establishing a corresponding relation between the Communication node and the Communication field character string text;
establishing a one-to-one correspondence relationship between a plurality of IED nodes and a plurality of IED field character string texts respectively;
and establishing a corresponding relation between the DataTypetemplates node and the DataTypetemplates field character string text.
(5) According to the mapping table, finding the substring text, and completing the analysis and configuration functions in the modes of loading, updating and combining: searching a sub-string text corresponding to the required operation content according to a mapping table, loading the partial sub-string text to form a local DOM tree, changing the content of the local DOM tree in a DOM modification mode, realizing the conversion from the local DOM tree to the corresponding sub-string text through a node and a text conversion interface in a DOM mechanism, then releasing memory resources occupied by the local DOM tree, and finishing the periodic one-time configuration work; specifically, the method comprises the following steps:
when a certain configuration of the SCD needs to be edited, analyzing the corresponding character string text in a DOM mode to form a local DOM tree related to the editing, overwriting the local DOM tree related to the editing back to the character string text and releasing the local DOM tree related to the editing after the modification is finished;
when a certain content needs to be searched, analyzing the corresponding character string text in a DOM mode to form a local DOM tree related to the search, searching by utilizing a traversal mechanism of the DOM, finishing the search, and releasing the local DOM tree related to the search after the subsequent search does not relate to the character string text any longer;
when an ICD file needs to be imported, adding an IED node (without a child node) into an existing IED node of an SCD index DOM tree, adding an IED field character string text into a newly allocated memory space, and updating a mapping relation table; loading the Communication section text to form a local DOM tree related to the Communication section, and updating the Communication section text after adding the Communication parameters in the ICD to the corresponding position of the local DOM tree related to the Communication section; loading the text of the DataTypetemplates segment to form a local DOM tree related to the DataTypetemplates segment, adding a data type template in the ICD to the corresponding position of the local DOM tree related to the DataTypetemplates segment, updating the text of the DataTypetemplates segment, and then releasing all the local DOM trees;
when the Schema check is needed, recombining the text of each part of the character string into a complete text of the SCD character string, and carrying out the Schema check on the text of the SCD character string in an SAX mode;
when a CID/CCD file needs to be exported, loading a Communication section text, a corresponding IED section text, an external IED section text required by virtual circuit configuration and a DataTypetemplates section text, respectively generating a local DOM tree exported by the CID/CCD for each part of text, and releasing all the local DOM trees exported by the CID/CCD after exporting;
recombining the character string texts of each part into a complete SCD character string text, and providing the complete SCD character string text for an SAX mode to realize Schema check or store the complete SCD character string text as an SCD file; when the SCD file needs to be saved, the existing local DOM tree is updated to the character string text of the corresponding part, and the SCD character string text is recombined and saved as the SCD file.
When other non-enumerated parsing and configuration functions need to be completed, the method can be realized by following the manner described above.
In fig. 1, "update" refers to rewriting the corresponding string text from the local DOM memory tree; "text loading" means that a local DOM memory tree is generated by analyzing a corresponding character string text in a DOM mode; "text combination" refers to combining Header section text, substtation section text and the like in a sequential order to form a complete SCD text string.
In the embodiments provided in the present application, the illustrated system and method may be implemented in other ways. For example, the SCD-indexed DOM tree may become a global indexed hash table, the sub-string division manner may be coarser or finer, the generation and release timing of the local DOM tree may be changed, and the like. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The distributed analysis configuration method of the SCD file of the intelligent substation is characterized by comprising the following steps:
(1) analyzing the SCD file in a SAX mode;
(2) extracting an SCD index DOM tree from the SCD file;
(3) splitting a character string text of the SCD file into a plurality of sub character string texts and storing the sub character string texts in a memory;
(4) establishing a mapping table of an SCD index DOM tree and each substring text;
(5) searching the substring text according to the mapping table, and completing the functions of analysis and configuration in a loading, updating and combining manner;
the specific method of the step (5) is as follows:
searching a sub-string text corresponding to the required operation content according to a mapping table, loading the partial sub-string text to form a local DOM tree, changing the content of the local DOM tree in a DOM modification mode, realizing the conversion from the local DOM tree to the corresponding sub-string text through a node and a text conversion interface in a DOM mechanism, then releasing memory resources occupied by the local DOM tree, and finishing the periodic one-time configuration work;
recombining the character string texts of each part into a complete SCD character string text, and providing the complete SCD character string text for an SAX mode to realize Schema check or store the complete SCD character string text as an SCD file;
when a certain configuration of the SCD needs to be edited, analyzing the corresponding character string text in a DOM mode to form a local DOM tree related to the editing, overwriting the local DOM tree related to the editing back to the character string text and releasing the local DOM tree related to the editing after the modification is finished;
when a certain content needs to be searched, analyzing the corresponding character string text in a DOM mode to form a local DOM tree related to the search, searching by utilizing a traversal mechanism of the DOM, finishing the search, and releasing the local DOM tree related to the search after the subsequent search does not relate to the character string text any longer;
when an ICD file needs to be imported, after an IED node of the ICD file is added to an existing IED node of an SCD index DOM tree, an IED field character string text is added to a newly allocated memory space, and a mapping relation table is updated; loading the Communication section text to form a local DOM tree related to the Communication section, and updating the Communication section text after adding the Communication parameters in the ICD to the corresponding position of the local DOM tree related to the Communication section; loading the text of the DataTypetemplates segment to form a local DOM tree related to the DataTypetemplates segment, adding a data type template in the ICD to the corresponding position of the local DOM tree related to the DataTypetemplates segment, updating the text of the DataTypetemplates segment, and then releasing all the local DOM trees;
when the Schema check is needed, recombining the text of each part of the character string into a complete text of the SCD character string, and carrying out the Schema check on the text of the SCD character string in an SAX mode;
when a CID/CCD file needs to be exported, loading a Communication section text, a corresponding IED section text, an external IED section text required by virtual circuit configuration and a DataTypetemplates section text, respectively generating a local DOM tree exported by the CID/CCD for each part of text, and releasing all the local DOM trees exported by the CID/CCD after exporting;
when the SCD file needs to be saved, the existing local DOM tree is updated to the character string text of the corresponding part, and the SCD character string text is recombined and saved as the SCD file.
2. The distributed parsing configuration method for the SCD file of the intelligent substation of claim 1, wherein: in the steps (1) and (2), loading the SCD file in an SAX mode, carrying out XML format verification in the loading process, and extracting the following nodes by using a mode of defining an SAX callback function: the method comprises the steps that a Header, a substtation, Communication, a plurality of sub networks, a plurality of IEDs and DataTypetemplates nodes generate an SCD index DOM tree according to the sequence specified in the SCD.
3. The distributed parsing configuration method for the SCD file of the intelligent substation of claim 2, wherein: when loading the SCD file in the SAX mode, if loading a newly-built SCD file, opening the SCD of a basic frame;
when the XML format is checked, the subsequent step operation is refused for the file with the non-XML format, and an alarm prompt is directly given;
when the SCD index DOM tree is generated, a root node named SCL is created, a Header, a substtation, Communication, a plurality of IEDs and DataTypetemplates nodes are sequentially added to serve as child nodes of the root node, a plurality of SubNetwork nodes are added to serve as child nodes of Communication, and the SCD index DOM tree is formed.
4. The distributed parsing configuration method for the SCD file of the intelligent substation of claim 1, wherein the specific method in the step (3) is as follows: the method comprises the steps of splitting an SCD character string text into an SCD head text, a Header text, a substtation text, a Communication text, a plurality of IED (intelligent electronic device) texts, a DataTypetemplates text and an SCD tail character string text in a keyword searching mode.
5. The distributed parsing configuration method for the SCD file of the intelligent substation of claim 4, wherein the specific method for splitting the SCD string text in a manner of searching for the keyword comprises:
the SCD Header is the content before the string "< Header";
the Header section is the content from the character string "< Header" to the character string "</Header >";
the substtation section is the content from the character string "< substtation" to the character string "</substtation >";
the Communication section is the content from the character string "< Communication" to the character string "</Communication >";
there are several IED segments, each starting with a string "< IED" and ending with the first "</IED >" after it;
the DataTypetemplates segment is the content from the character string "< DataTypetemplates" to the character string "</DataTypetemplates >";
the SCD tail is the content after the string "</DataTypetemplates >".
6. The distributed parsing configuration method for the SCD file of the intelligent substation of claim 1, wherein:
the SCD index DOM tree comprises the following nodes: a Header, a Substation, a Communication, a plurality of IEDs and DataTypetemplates nodes;
the split SCD string text forms a plurality of sub-string texts including: a Header section, a substtation section, a Communication section, a plurality of IED sections and a DataTypeTemplates section;
the mapping mode of the step (4) is as follows:
establishing a corresponding relation between a Header node in the SCD index DOM tree and a Header section character string text;
establishing a corresponding relation between the substtation nodes and substtation section character string texts;
establishing a corresponding relation between the Communication node and the Communication field character string text;
establishing a one-to-one correspondence relationship between a plurality of IED nodes and a plurality of IED field character string texts respectively;
and establishing a corresponding relation between the DataTypetemplates node and the DataTypetemplates field character string text.
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| CN113065256B (en) * | 2021-04-08 | 2022-10-18 | 东方电子股份有限公司 | Calibration method of ICD (interface control document) model of intelligent device of transformer substation based on rule file |
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Denomination of invention: Distributed parsing and configuration method for SCD files in intelligent substations Effective date of registration: 20231205 Granted publication date: 20201103 Pledgee: Yantai financing guarantee Group Co.,Ltd. Pledgor: DONGFANG ELECTRONICS Co.,Ltd. Registration number: Y2023980069277 |