CN110535092B - CCD file change influence analysis method based on CRC check - Google Patents

CCD file change influence analysis method based on CRC check Download PDF

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CN110535092B
CN110535092B CN201910852576.3A CN201910852576A CN110535092B CN 110535092 B CN110535092 B CN 110535092B CN 201910852576 A CN201910852576 A CN 201910852576A CN 110535092 B CN110535092 B CN 110535092B
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control block
configuration information
external device
receiving control
crc
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CN110535092A (en
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叶远波
陈实
黄太贵
谢民
王同文
董怀普
汪胜和
程小平
邵庆祝
王薇
项忠华
陈晓东
刘春成
胡昊
纪陵
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State Grid Anhui Electric Power Co Ltd
Nanjing SAC Automation Co Ltd
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State Grid Anhui Electric Power Co Ltd
Nanjing SAC Automation Co Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10File systems; File servers
    • G06F16/17Details of further file system functions
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00Details of emergency protective circuit arrangements
    • H02H1/0092Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices

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  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Evolutionary Computation (AREA)
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  • Databases & Information Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a CCD file change influence analysis method based on CRC, which is used for respectively analyzing data structures of two CCD files and acquiring configuration information of a GOOSE receiving control block and an SV receiving control block; classifying the configuration information of the GOOSE receiving control block and the SV receiving control block according to the same external device, forming a data set by the configuration information of the GOOSE receiving control block and the SV receiving control block of the same external device, calculating CRC (cyclic redundancy check) codes of a plurality of original and new data sets, and positioning the changed external device; and analyzing specific change information according to the original and new data sets corresponding to the positioned changed external devices, and positioning, changing and expanding the influence range. The configuration information of the operated device is not influenced by modification information in reconstruction and extension, the reconstruction influence range is quickly positioned, total station power failure is avoided for debugging, the debugging efficiency is improved, the debugging range is reduced, and the application requirements of reconstruction and extension of secondary equipment of the intelligent substation are met.

Description

CCD file change influence analysis method based on CRC check
Technical Field
The invention relates to the technical field of management and control of secondary relay protection equipment of a power system, in particular to a CCD file change influence analysis method based on CRC (cyclic redundancy check).
Background
The scd (substation Configuration description) file describes the complete substation Configuration, and protects the model information of all secondary devices, the communication parameter Configuration information, and the secondary loop information between process layer devices, which is equivalent to the secondary cable loop connecting a secondary device in a conventional substation.
A large amount of intelligent substation's input operation, because intelligent substation design initial stage, the technique has the limitation, and equipment model design consideration is not comprehensive, and construction debugging test experience is less, and intelligent substation running state has very big not enough, and simultaneously because economic technology's development, the quick increase of user power consumption needs to be rebuild the extension to original design mode to satisfy the quick development demand of electric wire netting. When a new increasing interval is met in the reconstruction and extension, the running equipment is expected not to be influenced, and the configuration of the running equipment is required to be ensured not to be changed. For the line reconstruction and extension, the operation configuration information of the associated bus protection device needs to be reconfigured and downloaded, but whether the configuration file modification of the bus protection device changes the configuration information of the operated device or not cannot be positioned. In the reconstruction and extension stage, for safety, all total stations need to be powered off, tests are carried out, the configuration of a secondary circuit is verified, the influence range is too large, and the reconstruction and extension efficiency is low. At present, the reconstruction and extension technology of the intelligent transformer substation is relatively immature, and the reconstruction and extension device cannot be guaranteed not to influence the reliable operation of the operated device in the reconstruction and extension stage.
The SCD file is used as a configuration description file of the intelligent substation, is an important basis for secondary system operation configuration, and is very important in the links of debugging, acceptance, maintenance, overhaul and reconstruction and extension of the intelligent substation, and the SCD file integrates model information, device communication parameter information and process secondary virtual circuit associated configuration information of all secondary devices. In the stage of reconstruction and expansion or engineering debugging of the intelligent substation, the SCD file changes, so that field debugging or operation personnel cannot know the direct difference of versions, and whether the configuration information downloaded into the device is changed or not is caused, so that the influence is caused. In the process of rebuilding and expanding the intelligent substation, a link is to generate a process layer configuration file for operating the device from the SCD file through a system configuration tool, and downloaded to the inside of the Device (hereinafter, the present Device) for operation, wherein the process level configuration file is a CCD (configured Circuit description) file, the CCD file is an Intelligent substation secondary Device IED (Intelligent Electronic Device) virtual Circuit configuration file, the configuration file is used for defining IEDs to subscribe and publish GOOSE (Generic Object Oriented Events) and SV (Sampled Value) information, and comprises an address mapping relation between an internal address of a virtual circuit and an external device (relative to a device with a CCD installed below), control block communication parameter information, virtual terminal receiving port information and virtual terminal description information, and a national grid company publishes and implements technical specification of intelligent Substation relay protection engineering file, which specifies unified specification content and format of CCD files. IEC61850 models uniformly the data objects in substation automation systems, dividing IEDs from top to bottom into Logical Devices (LDs), Logical Nodes (LNs), Data (DOs) and Data Attributes (DA), where LNs are the composition of data, data sets and various Control blocks, including report Control block rcb (report Control block) and log Control block lcb (log Control block). The control block represents: the data block of data communication, control block contain the definition information that the data is correlated with.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a CCD file change influence analysis method based on CRC, and solves the problems that whether the configuration file modification influences the configuration information of the operated equipment cannot be known in the reconstruction and expansion process of an intelligent substation, the total station needs to be completely powered off, and the reconstruction and expansion efficiency is low.
In order to achieve the above purpose, the invention adopts the following technical scheme: a CCD file change influence analysis method based on CRC is characterized in that:
step 1: the method comprises the steps of configuring an SCD file for an intelligent substation reconstruction and extension device, exporting a new CCD file for device reconstruction and extension according to the SCD file, obtaining an original CCD file from an intelligent substation device to be reconstructed and extension, respectively analyzing data structures of the two CCD files, and obtaining configuration information of a GOOSE receiving control block and an SV receiving control block;
step 2: classifying the configuration information of the GOOSE receiving control block and the SV receiving control block according to the same external device by adopting a method based on secondary loop configuration information identification for the new CCD file and the original CCD file, wherein the configuration information of the GOOSE receiving control block and the SV receiving control block received by the same external device forms a data set, and a plurality of original and new data sets of the configuration information of the GOOSE receiving control block and the SV receiving control block classified according to the external device are obtained;
and step 3: performing CRC check code calculation on the plurality of original and new data sets, and positioning the changed external device by comparing the CRC check codes;
and 4, step 4: and analyzing specific change information according to the original and new data sets corresponding to the positioned changed external devices, and positioning, changing and expanding the influence range.
The method for analyzing the change influence of the CCD file based on the CRC is characterized in that: the GOOSE receiving control block configuration information is as follows: the CCD file downloading device receives GOOSE configuration information related to external device data; the SV reception control block configuration information is: the CCD file downloading device receives SV configuration information related to external device data; the control block configuration information includes communication parameters of an external device, port information and a mapping relation of an internal address and an external address of a secondary virtual loop.
The method for analyzing the change influence of the CCD file based on the CRC is characterized in that: the SCD file configured for the intelligent substation reconstruction and extension device specifically comprises the following steps: and configuring the virtual terminals between the device model information, the communication parameters and the associated devices which are added by reconstruction and extension.
The method for analyzing the change influence of the CCD file based on the CRC is characterized in that: in step 2, the GOOSE receive control block and the SV receive control block configuration information are classified according to the same external device, and the receive GOOSE receive control block and the SV receive control block configuration information of the same external device form a data set, which specifically includes:
1) obtaining a unique control block communication identifier of a control block according to configuration information of a GOOSE receiving control block and an SV receiving control block, and obtaining the name of an external device and the name of logic equipment of the external device;
2) according to the GOOSE receiving control block or SV receiving control block configuration information, acquiring the name of the logic equipment of the external device;
3) and obtaining the name of the external device of the device according to the combined name of the external device and the name of the logic equipment, and grouping the configuration information of the GOOSE receiving control block and the SV receiving control block under the same device name into a group.
The method for analyzing the change influence of the CCD file based on the CRC is characterized in that: the step 3 comprises the following specific processes:
1) calculating CRC (cyclic redundancy check) codes for a plurality of data sets of configuration information of a GOOSE receiving control block and an SV receiving control block, which are classified according to an external device;
2) and comparing the CRC values corresponding to the same external devices in the original CCD file and the new CCD file, if the CRC values are the same, determining that the configuration information of the external device in the new CCD file is not changed, and if the two CRC check codes are not consistent, determining that the configuration information of the external device in the new CCD file is changed.
The method for analyzing the change influence of the CCD file based on the CRC is characterized in that: the calculating of the CRC code specifically comprises the following steps: a four byte CRC-32 check code is calculated using the exchange standard code sequence.
The method for analyzing the change influence of the CCD file based on the CRC is characterized in that: the step 4 specifically includes:
extracting communication parameters from original and new data sets corresponding to the changed external device, comparing the communication parameters before and after the two reconstruction and expansion, and identifying changed communication parameter information;
and extracting virtual loop information from the original and new data sets corresponding to the changed external device, comparing and analyzing the receiving address of the internal device and the sending address of the external device, and determining that the virtual loop information is changed if the virtual loop information is inconsistent with the receiving address of the internal device.
The invention achieves the following beneficial effects:
the invention respectively analyzes the data structures of two CCD files and acquires the configuration information of a GOOSE receiving control block and an SV receiving control block; classifying the configuration information of the GOOSE receiving control block and the SV receiving control block according to the same external device, wherein the configuration information of the GOOSE receiving control block and the SV receiving control block of the same external device form a data set to obtain a plurality of original and new data sets of the configuration information of the GOOSE receiving control block and the SV receiving control block classified according to the external device; performing CRC check code calculation on the plurality of original and new data sets, and positioning the changed external device by comparing the CRC check codes; and analyzing specific change information according to the original and new data sets corresponding to the positioned changed external devices, and positioning, changing and expanding the influence range. The configuration information of the operated device is not influenced by modification information in reconstruction and extension, the reconstruction influence range is quickly positioned, total station power failure is avoided for debugging, the debugging efficiency is improved, the debugging range is reduced, and the application requirements of reconstruction and extension of secondary equipment of the intelligent substation are met.
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FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a method for analyzing influence of a change of a CCD file based on CRC check specifically includes the steps of:
step 1: the method comprises the steps of configuring an SCD file for an intelligent substation reconstruction and extension device, exporting a new CCD file for device reconstruction and extension according to the SCD file, obtaining an original CCD file from an intelligent substation device to be reconstructed and extension, respectively analyzing data structures of the two CCD files, and obtaining configuration information of a GOOSE receiving control block and an SV receiving control block;
the GOOSE receives the configuration information of the control block as follows: the internal device (also called the device, namely a device for downloading the CCD file) receives the GOOSE configuration information related to the data of the external device;
the SV reception control block configuration information is: the device receives SV configuration information related to external device data;
configuring an SCD file for reconstruction and extension of the intelligent substation device, specifically, configuring device model information, communication parameters and virtual terminals between associated devices, wherein the device model information is increased by reconstruction and extension;
due to the requirement of nine unified devices, all the devices support configuration files and CCD files of devices on FTP, so that the original CCD files can be obtained from the intelligent substation devices to be reconstructed and expanded;
obtaining configuration information of a GOOSE receiving control block and an SV receiving control block through GOOSE subscription information and SV subscription information; the control block configuration information includes communication parameters of the external device, port information, and a mapping relationship between the internal and external addresses of the secondary virtual loop.
Step 2: the method comprises the steps that a method based on secondary circuit configuration information identification is adopted for new CCD files and original CCD files of an intelligent substation reconstruction and extension device, configuration information of a GOOSE receiving control block and configuration information of an SV receiving control block are classified according to the same external device, the configuration information of the GOOSE receiving control block and the SV receiving control block of the same external device form a data set, and a plurality of original and new data sets of the configuration information of the GOOSE receiving control block and the SV receiving control block classified according to the external device are obtained;
the method comprises the following specific steps:
1) according to the unique identifier appid of the control block communication between the GOOSE receiving control block and the SV receiving control block configuration information obtaining control block, the external device name IEDName and the logical device name LDName of the external device are obtained, for example: appid = "IL2201ARPIT/LLN0$ GO $ GCB1", the path consists of: IEDName + LDName +/+ LLN0+ $ + GO + $ + GCBName, thereby obtaining the name of the IEDName + LDName combination as IL2201 ARPIT;
2) according to the GOOSE receiving control block or SV receiving control block configuration information, the logical device name LDName of the external apparatus is obtained, for example: < FCDA bType = "Dbpos" daName = "stVal" desc = "1G position" doName = "Pos" fc = "ST" ldInst = "RPIT" lnClass = "XSWI" lnnst = "1" prefix = ">", where ldInst is the logical device and LDName is obtained as RPIT;
3) obtaining the IEDName of the device according to the combined name of the IEDName and the LDName, grouping the received GOOSE and SV into a group according to the device name, for example, obtaining the IEDName as IL2201A according to IL2201ARPIT and RPIT, and grouping the configuration information of the GOOSE receive control block and SV receive control block under the same device name into a group.
The method for identifying the configuration information of the secondary loop is adopted for the intelligent substation reconstruction and extension device, and the GOOSE receiving control block and the SV receiving control block are classified according to the same external device.
And step 3: performing CRC check code calculation on different data sets of the device obtained in the step 2, and positioning the changed external device by comparing the CRC check codes of the original CCD file and the new CCD file, wherein the specific process comprises the following steps:
1) calculating four-byte CRC-32 check codes by adopting an exchange standard code sequence for a plurality of data sets classified by configuration information of a GOOSE receiving control block and an SV receiving control block according to an external device;
2) comparing CRC values corresponding to the same external device in the original CCD file and the new CCD file, if the CRC values are the same, determining that the configuration information of the external device in the new CCD file is not changed, and if the two CRC values are not consistent, determining that the configuration information of the external device in the new CCD file is changed;
and 4, step 4: and analyzing specific change information according to the original and new data sets corresponding to the positioned changed external devices, and positioning, changing and expanding the influence range.
The method comprises the following specific steps:
1) extracting communication parameters from original and new data sets corresponding to the changed external device, comparing the two communication parameters before and after reconstruction and expansion, and identifying changed communication parameter information, wherein the communication parameters comprise a control block communication Address APPID, a control block physical Address MAC-Address, a control block virtual local area network VLAN-ID, a control block PRIORITY VLAN-PRIORITY and the like;
2) extracting virtual loop information from the original and new data sets corresponding to the changed external device, comparing and analyzing the internal device receiving address and the external device sending address, and determining that the virtual loop information is changed if the virtual loop information is not consistent, such as loop information:
< FCDA bType = "Dbpos" daName = "stVal" desc = "1G position" doName = "Pos" fc = "ST" ldInst = "RPIT" lnClass = "XSWI" lnnst = "1" prefix = ">", and "FCDA bType =" Dbpos "danme =" stVal "=" desc = "1G position" donme "=" lnInst = "pi" > "
< intAddr desc = "busbar 1 disconnecting link position" name = "MUGO/GOINGGIO4.DPCSO1.stVal" >)
<DAI name="stVal" sAddr="45.0.1.9.2" />
</intAddr>
</FCDA>
Wherein, FCDA is: functional Constrained Data Attribute function constraint Data Attribute, bType: a data type; daName: data attributes; desc: describing data; and (4) carrying out doName: a data object; fc: functional constraint functional constraints; ldInst: a logic device; lnClass: a logical category; lnInst: a serial number; prefix: a prefix; intAddr: an internal address; desc: an object description; DAI: data attributes;
the external device transmission address is: ldInst +/+ lnClass + lnInst + do Name + daName, the internal device receiving address is the name in the intAddr element, so the external device sending address can be obtained as: RPIT/XSWI 1/. Pos. stVal, internal address: MUGO/GOINGGIO4.DPCSO1.stVal, different addresses, determine that the virtual loop information has changed.
For the extension line, the bus protection device needs to be reconfigured and downloaded, as long as the CRC value of the virtual loop received by the commissioned device is not changed in the bus protection CCD file, the configuration information of the commissioned device and the bus protection is not changed, and whether the reconstruction affects the commissioned line or not can be ensured by comparing the interval CRC values before and after the reconstruction.
The invention analyzes the information content and format of CCD file, the data sending and receiving are independent control block information in CCD file, for data receiving, the receiving control block configuration information of each external device forms a data set, the receiving control block configuration information is automatically grouped according to the name of the receiving device and is combined into a new character sequence information, each group of character sequence information is CRC calculated, the circuit information is analyzed by comparing the secondary circuit configuration file information of the devices before and after reconstruction and extension, the configuration of the device is positioned and changed, the configuration information of the reconstruction and extension device and the operated device is determined not to be changed, for the operated device, the transmission experiment can not be carried out, the receiving control block configuration information is controlled, the modification information in reconstruction and extension is ensured not to influence the configuration information of the operated device, the reconstruction influence range is quickly positioned and extended, the debugging of avoiding the total powerstation to have a power failure improves debugging efficiency, reduces the debugging scope, satisfies the application demand of intelligent substation secondary equipment reconstruction extension.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (6)

1. A CCD file change influence analysis method based on CRC is characterized in that:
step 1: the method comprises the steps of configuring an SCD file for an intelligent substation reconstruction and extension device, exporting a new CCD file for device reconstruction and extension according to the SCD file, obtaining an original CCD file from an intelligent substation device to be reconstructed and extension, respectively analyzing data structures of the two CCD files, and obtaining configuration information of a GOOSE receiving control block and an SV receiving control block;
step 2: classifying the configuration information of the GOOSE receiving control block and the SV receiving control block according to the same external device by adopting a method based on secondary loop configuration information identification for the new CCD file and the original CCD file, wherein the configuration information of the GOOSE receiving control block and the SV receiving control block of the same external device form a data set, and a plurality of original and new data sets of the configuration information of the GOOSE receiving control block and the SV receiving control block classified according to the external device are obtained;
and step 3: performing CRC check code calculation on the plurality of original and new data sets, and positioning the changed external device by comparing the CRC check codes;
and 4, step 4: analyzing specific change information according to the original and new data sets corresponding to the positioned changed external devices, and positioning, changing and expanding the influence range;
the step 4 specifically includes:
extracting communication parameters from original and new data sets corresponding to the changed external device, comparing the communication parameters before and after the two reconstruction and expansion, and identifying changed communication parameter information;
and extracting virtual loop information from the original and new data sets corresponding to the changed external device, comparing and analyzing the receiving address of the internal device and the sending address of the external device, and determining that the virtual loop information is changed if the virtual loop information is inconsistent with the receiving address of the internal device.
2. The method for analyzing the influence of the change of the CCD file based on the CRC as claimed in claim 1, wherein: the GOOSE receiving control block configuration information is as follows: the CCD file downloading device receives GOOSE configuration information related to external device data; the SV reception control block configuration information is: the CCD file downloading device receives SV configuration information related to external device data; the control block configuration information includes communication parameters of an external device, port information and a mapping relation of an internal address and an external address of a secondary virtual loop.
3. The method for analyzing the influence of the change of the CCD file based on the CRC as claimed in claim 1, wherein: the SCD file configured for the intelligent substation reconstruction and extension device specifically comprises the following steps: and configuring the virtual terminals between the device model information, the communication parameters and the associated devices which are added by reconstruction and extension.
4. The method for analyzing the influence of the change of the CCD file based on the CRC as claimed in claim 1, wherein: in step 2, the GOOSE receive control block and SV receive control block configuration information are classified according to the same external device, and the GOOSE receive control block and SV receive control block configuration information of the same external device form a data set, which specifically includes:
1) obtaining a unique control block communication identifier of a control block according to configuration information of a GOOSE receiving control block and an SV receiving control block, and obtaining the name of an external device and the name of logic equipment of the external device;
2) according to the GOOSE receiving control block or SV receiving control block configuration information, acquiring the name of the logic equipment of the external device;
3) and obtaining the name of the external device of the device according to the combined name of the external device and the name of the logic equipment, and grouping the configuration information of the GOOSE receiving control block and the SV receiving control block under the same device name into a group.
5. The method for analyzing the influence of the change of the CCD file based on the CRC as claimed in claim 1, wherein: the step 3 comprises the following specific processes:
1) calculating CRC (cyclic redundancy check) codes for a plurality of data sets of configuration information of a GOOSE receiving control block and an SV receiving control block, which are classified according to an external device;
2) and comparing the CRC values corresponding to the same external devices in the original CCD file and the new CCD file, if the CRC values are the same, determining that the configuration information of the external device in the new CCD file is not changed, and if the two CRC check codes are not consistent, determining that the configuration information of the external device in the new CCD file is changed.
6. The method for analyzing the influence of the change of the CCD file based on the CRC as claimed in claim 1, wherein: the calculating of the CRC code specifically comprises the following steps: a four byte CRC-32 check code is calculated using the exchange standard code sequence.
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