CN103578048A - Method for checking and comparing configuration related information of intelligent substation SCL documents - Google Patents

Abstract

The present invention relates to the debugging of the secondary system of an intelligent substation, in particular to a method for checking and comparing information related to the SCL file configuration of an intelligent substation, comprising the following steps: selecting two versions of an SCL file before and after a change of an intelligent substation and loading them respectively, and The two SCL files are parsed by QXmlStreamReader in Qt; the information parameter layer containing the configuration of the SCL file and the information parameters contained in the information parameter layer are read; the text is compared; the comparison result is obtained and saved. This method adopts the QXmlStreamReader parsing method, which greatly shortens the parsing time and also reduces the memory occupied by the program; the comparison process is simpler and the comparison result is more comprehensive.

Description

A method for checking and comparing information related to SCL file configuration in smart substations

technical field

The invention relates to debugging of a secondary system of an intelligent substation, in particular to a method for checking and comparing information related to SCL file configuration of an intelligent substation.

Background technique

IEC61850-6 defines four types of SCL (Substation Configuration Language) files: (1) ICD file, which describes the basic data model and services provided by IED; (2) SSD file, which describes the primary system structure and associated logic of the substation switchyard Node; (3) SCD file, which describes the instance configuration and communication parameter information of all IEDs in the whole station, the contact information between IEDs, and the primary system structure of the substation; (4) CID file, which is provided by the device manufacturer according to the relevant information of the IED in the SCD file generate. In the debugging of the secondary system of the smart substation, the SCL file is often modified, and it is difficult for the debugger to remember the content of the last modification and the content of this modification, and whether the modification is correct. There is an urgent need for a file that compares the relevant information of the SCL file configuration. By comparing the two versions of the file, you can find the modified content, so as to check whether the modification is correct.

Due to the current lack of tools for quick and convenient comparison of SCL file configuration related information, if debuggers want to check whether the SCL file is modified correctly in advance, sometimes they can only use text comparison tools or even manual comparison. In the text comparison tool, the incompatibility of the character position will also be displayed as a difference in the comparison result. Often after the SCL file is modified or added, the character position in it will change a lot, and the debugger just hopes to find the difference in the corresponding configuration-related information by comparing the two SCL files, and will not care about each character, the position of each line in the file. If such a method is adopted, the debugger has to face the comparison results of thousands of lines, so it is difficult to comprehensively and even quickly find out the problems in the configuration process of the SCL file. Some research institutions also proposed to realize the difference comparison of SCL files by establishing a comparison model. Because of the limitations of the modeling itself, this comparison method has the disadvantage of incomplete comparison results.

Contents of the invention

The purpose of the present invention is to provide a method for checking and comparing information related to SCL file configuration in smart substations, to solve the lack of debugging tools for smart substations at present, and to check the information related to SCL file configuration in smart substations, which is time-consuming, incomplete and inefficient. question.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a method for checking and comparing information related to the SCL file configuration of an intelligent substation, comprising the following steps:

Step 1, select the two versions of the SCL file of a smart substation before and after the change and load them separately, and analyze the two SCL files through QXmlStreamReader in Qt;

Step 2, reading the information parameter layer comprising the configuration of the SCL file and the information parameters contained in the information parameter layer;

Step 3, text comparison;

Step 4, get the comparison result and save it.

Further, the QXmlStreamReader in the Qt parses the two SCL files specifically: according to the structural characteristics of the SCL file, the QXmlStreamReader parses the SCL file into a tree state hierarchical structure, and extracts the information parameter layer of each level and the information contained in the information parameter layer. information parameter.

Further, the text comparison mainly includes:

Judging whether the information parameter layers are the same, if the information parameter layers are not the same, the comparison of the information parameter layers is completed;

If the information parameter layers are the same, then judge whether the information parameters are consistent, and if the information parameters are consistent, complete the comparison of the information parameter layers;

If the information parameters are inconsistent, output the corresponding information parameters to complete the comparison of this information parameter layer;

Information parameters with different information parameter layers or inconsistent information parameters are screened out as comparison results.

Further, the SCL file is based on the hierarchical model of the IEC61850 standard, and adopts a tree-like hierarchical structure corresponding to it in structure. Classes at the upper level are "aggregated" by several classes at the lower level. Each Each layer defines corresponding abstract classes, and defines the properties and services of these classes.

Further, the SCD file structure includes five parts: <Header>, <Substation>, <Communication>, <IED> and <DataTypeTemplates>, the <IED> (Intelligent Electronic Device) layer contains <Services> (service ) and <AccessPoint> (access point), the <AccessPoint> layer is divided into <Server> (server), <Logical-Device> (logical device), <Logical-Node> (logical node), <Data> from top to bottom (data object), and <DataAttribute> (data attribute). The <Header> includes version information, revision information and name mapping information of the configuration file; <Substation> includes the functional structure, main components, electrical connections and corresponding functional nodes of the substation; <Communication> defines the communication subnet The relevant configuration information of the IED access point, including the network address of the device and the physical address of each layer; <IED> describes the configuration of the IED, including logical devices, logical nodes, data objects, data attribute instances, and communication service capabilities. ;<DataTypeTemplates> is an instantiable data attribute type template.

Further, the information parameter layer mainly includes network and device, GOOSE, SV and MMS; the information parameters included in the network and device mainly include the number of sub-networks, sub-network type, sub-network description, device description, device manufacturing Manufacturer and device name; the information parameters included in GOOSE mainly include the number of APPID channels (number of application identifier channels), MAC address, GoCBRef (goose control block reference), DataSet (data set), GoID (goose identifier), When no event occurs, the steady-state repeated time interval T0, the shortest sending time interval after the event occurs T1, the number of channels of GOOSE, the channel name and data reference of GOOSE; the information parameters included in SV mainly include the number of channels of SV, MAC Address, SVID (sample value identifier), DataSet (data set) and SV channel name and data reference; the information parameters included in MMS mainly include the IP address of the MMS communication layer.

Compared with prior art, the beneficial effect of the present invention is:

The QXmlStreamReader parsing method is adopted, which greatly shortens the parsing time and also reduces the memory occupied by the program;

Compared with the comparison of SCL files by text comparison software, the present invention makes full use of the hierarchical structure and aggregation relationship of SCL files, uses the information parameter layer and the information parameters contained therein as the comparison object, and uses the comparison object as the unit for output comparison As a result, the comparison result is clear at a glance and is very intuitive, and the debugger can quickly and accurately check whether the configuration related information of the SCL file is modified correctly.

Compared with methods such as defining identifiers and establishing comparison models, this method adopts the method of combining analysis tools with text comparison, the comparison process is simpler, and the analyzed SCL files are directly compared, and the comparison results are more comprehensive.

By checking and comparing the relevant information of the SCL file configuration, you can also check whether the ICD file of the newly added IED is imported into the SCD, whether the original part of the SCD file is damaged, and check the CID file in the device and the SCD file information in the background system. Whether the version is consistent or not improves the situation of version inconsistency caused by multiple configuration file versions and chaotic management during the commissioning process of the substation, and improves the efficiency and quality of the secondary system commissioning of the smart substation to a certain extent.

Description of drawings

FIG. 1 is a schematic flowchart of an embodiment of a method for checking and comparing information related to configuration of a smart substation SCL file according to the present invention.

FIG. 2 is a schematic diagram of a text comparison process of an embodiment of a method for checking and comparing information related to configuration of a smart substation SCL file according to the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Fig. 1 shows an embodiment of a method for checking and comparing information related to SCL file configuration in smart substations according to the present invention: a method for checking and comparing related information about SCL file configuration in smart substations, comprising the following steps:

Step 1, select the two versions of the SCL file of a smart substation before and after the change and load them separately, and analyze the two SCL files through QXmlStreamReader in Qt;

Step 2, reading the information parameter layer comprising the configuration of the SCL file and the information parameters contained in the information parameter layer;

Step 3, text comparison;

Step 4, get the comparison result and save it.

A preferred embodiment of the present invention's method for checking and comparing the relevant information of the SCL file configuration of the smart substation, since the SCL file is essentially an XML text file constrained by a fixed Schema file, the QXmlStreamReader in the Qt is capable of two The SCL file is parsed, specifically according to the structural characteristics of the SCL file, QXmlStreamReader parses the SCL file into a tree state hierarchical structure, and extracts the information parameter layer of each level and the information parameters contained in the information parameter layer, that is, QXmlStreamReader operates on the internal nodes of SCL, The specific implementation of its operation is an event-based model. QXmlStreamReader triggers a series of events when parsing an XML document. When a given tag is found, QXmlStreamReader activates a callback method to tell the method that the specified tag has been found, and then The information parameter layer and the information parameters contained in the information parameter layer in the SCL file are extracted according to these tags. Text comparison takes the information parameter layer and the information parameters it contains as the comparison object, uses two-way comparison to find the corresponding relationship between the comparison objects, and then performs text comparison.

Fig. 2 shows a kind of another preferred embodiment of the present invention to the smart substation SCL file configuration related information checking and comparison method, and the text comparison mainly includes:

Judging whether the information parameter layers are the same, if the information parameter layers are not the same, the comparison of the information parameter layers is completed;

If the information parameter layers are the same, then judge whether the information parameters are consistent, and if the information parameters are consistent, complete the comparison of the information parameter layers;

If the information parameters are inconsistent, output the corresponding information parameters to complete the comparison of this information parameter layer;

Information parameters with different information parameter layers or inconsistent information parameters are screened out as comparison results.

Preferably, the display mode of the comparison result is different from the general text comparison (the text comparison adopts a character-by-character comparison mode, and does not analyze the SCL file, and directly compares all the contents in the SCL file) and the display mode of the text comparison. And the present invention has fully utilized the grammatical characteristic of SCL file self, with the information parameter layer and the information parameter that comprises in the SCL file after being parsed as comparison object, adopt character comparison mode between comparison object, if there is character in comparison object If they are the same, the comparison result is output in units of comparison objects. The following table is a partial comparison result obtained by comparing two SCL files of a certain smart substation through a method for checking and comparing relevant information of smart substation SCL file configuration according to the present invention.

According to another preferred embodiment of the method for checking and comparing relevant information of the SCL file configuration of the smart substation according to the present invention, the SCL file is based on the hierarchical model of the IEC61850 standard, and adopts a corresponding tree structure in structure Hierarchical structure, upper-level classes are "aggregated" from several lower-level classes, and each layer defines corresponding abstract classes, and defines the attributes and services of these classes.

According to another preferred embodiment of the method for checking and comparing information related to the SCL file configuration of a smart substation according to the present invention, the SCD file structure includes five parts: <Header>, <Substation>, <Communication>, <IED> and <DataTypeTemplates>, the <IED> layer contains <Services> and <AccessPoint>, and the <AccessPoint> layer is divided into <SERVER>, <LOGICAL-DEVICE>, <LOGICAL-NODE>, <DATA> from top to bottom , and <DATAAttribute>. The <Header> includes version information, revision information and name mapping information of the configuration file; <Substation> includes the functional structure, main components, electrical connections and corresponding functional nodes of the substation; <Communication> defines the communication subnet The relevant configuration information of the IED access point, including the network address of the device and the physical address of each layer; <IED> describes the configuration of the IED, including logical devices, logical nodes, data objects, data attribute instances, and communication service capabilities. ;<DataTypeTemplates> is an instantiable data attribute type template.

According to another preferred embodiment of a method for checking and comparing relevant information of the smart substation SCL file configuration according to the present invention, the information parameter layer is each level in the tree-shaped hierarchical structure of the SCL file; the information parameter The layer mainly includes network and device, GOOSE, SV and MMS; the information parameters included in the network and device mainly include the number of sub-networks, sub-network type, sub-network description, device description, device manufacturer and device name; GOOSE The information parameters included mainly include the number of APPID channels (number of application identifier channels), MAC address, GoCBRef (goose control block reference), DataSet (data set), GoID (goose identifier), and steady-state repetition when no event occurs The occurrence time interval T0, the shortest sending time interval T1 after the event occurs, the number of channels of GOOSE, the channel name and data reference of GOOSE; the information parameters included in SV mainly include the number of channels of SV, MAC address, SVID (sampling value identification character), DataSet (data set) and SV channel name and data reference; the information parameters included in MMS mainly include the IP address of the MMS communication layer.

Since SCD files are generally relatively large, the parsing of model files has high requirements in terms of speed and memory consumption. Compared with DOM and SAX parsing methods, QXmlStreamReader is the fastest and easiest way to read XML documents in Qt, effectively shortening the Reduce the time of parsing SCL files, and the memory footprint is very small.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it is to be understood that numerous other modifications and implementations can be devised by those skilled in the art which will fall within the scope of the disclosure disclosed in this application. within the scope and spirit of the principles. More specifically, within the scope of the disclosure, drawings and claims of the present application, various modifications and improvements can be made to the components and/or layout of the subject combination layout. In addition to variations and modifications to the component parts and/or layout, other uses will be apparent to those skilled in the art.

Claims (6)

1. intelligent substation SCL file configuration relevant information is checked and a comparison method, it is characterized in that comprising the following steps:

Step 1, selects two versions of certain intelligent substation SCL document change front and back to load respectively, and by the QXmlStreamReader in Qt, two SCL files is resolved;

Step 2, reads the information parameter that the information parameter layer that comprises SCL file configuration and information parameter layer comprise;

Step 3, text comparison;

Step 4, draws comparative result and preserves.

2. according to claim 1 a kind of to the check of intelligent substation SCL file configuration relevant information and comparison method, it is characterized in that: the QXmlStreamReader in described Qt resolves specifically two SCL files: according to SCL file structure feature, it is tree state hierarchy that QXmlStreamReader resolves SCL file, and extracts the information parameter layer of each level and the information parameter that information parameter layer comprises.

3. according to claim 1 a kind of to the check of intelligent substation SCL file configuration relevant information and comparison method, it is characterized in that: described text mainly comprises:

Judge that whether information parameter layer is identical, if information parameter layer is not identical, complete the comparison of this information parameter layer;

If information parameter layer is identical, then judge that whether information parameter is consistent, if information parameter unanimously, completes the comparison of this information parameter layer;

If information parameter is inconsistent, export corresponding information parameter, complete the comparison of this information parameter layer;

Filter out the not identical or inconsistent information parameter of information parameter of information parameter layer result as a comparison.

4. according to claim 1 a kind of to the check of intelligent substation SCL file configuration relevant information and comparison method, it is characterized in that: described SCL file be take the model of IEC61850 standard stratification and is basis, structurally adopt corresponding with it tree-like hierarchy, last layer level class is formed by some classes " polymerization " of next level, every one deck all defines corresponding abstract class, and defines attribute and the service of these classes.

5. according to claim 4 a kind of to the check of intelligent substation SCL file configuration relevant information and comparison method, it is characterized in that: described SCD file structure comprises five parts: <Header>, <Substation>, <Communication>, <IED> and <DataTypeTemplates>, under described <IED> layer, contain <Services> and <AccessPoint>, <AccessPoint> layer is divided into <Server> from top to bottom, <Logical-Device>, <Logical-Node>, <Data>, and <DataAttribute>.

6. according to a kind of described in claim 1-5 any one, intelligent substation SCL file configuration relevant information is checked and comparison method, it is characterized in that: described information parameter layer mainly comprises network and device, GOOSE, SV and MMS; Described network and the included information parameter of device mainly contain sub-network number, sub-network type, sub-network description, unit describe, device manufacturing firm and and device name; The information parameter that GOOSE comprises mainly contains passage number, MAC Address, GoCBRef, DataSet, the GoID of APPID, the passage number of short transmission time interval T1, GOOSE and tunnel name and the data referencing of GOOSE after not having stable state when event occurs to repeat time of origin interval T 0, event to occur; The information parameter that SV comprises mainly contains passage number, MAC Address, SVID, DataSet and SV tunnel name and the data referencing of SV; The information parameter that MMS comprises mainly contains the IP address of MMS Communication Layer.

Images