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

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

An Analysis Method of CCD File Change Impact Based on CRC Check

technical field

The invention relates to the technical field of secondary equipment management and control of power system relay protection, in particular to a method for analyzing the influence of CCD file changes based on CRC verification.

Background technique

The Smart Substation Configuration Description SCD (Substation Configuration Description) file describes the complete substation configuration, model information for protecting all secondary equipment, communication parameter configuration information, and secondary circuit information between process-level devices, which is equivalent to connecting a substation in a conventional substation. Secondary cable loop for secondary equipment.

A large number of smart substations have been put into operation. Due to the limitations of technology in the early stage of smart substation design, the design of equipment models is not fully considered, and the experience in construction, commissioning and testing is relatively small, and the operating status of smart substations has great shortcomings. With the rapid increase in electricity consumption of users, the original design model needs to be renovated and expanded to meet the rapid development needs of the power grid. In the process of reconstruction and expansion, the newly added interval is expected to have no impact on the running equipment, and it is necessary to ensure that the configuration of the running equipment does not change. For line reconstruction and expansion, the operation configuration information of the associated busbar protection device needs to be reconfigured and downloaded, but it is impossible to locate whether the configuration file modification of the busbar protection device changes the configuration information of the already running device. In the reconstruction and expansion stage, for the sake of safety, it is necessary to conduct power outages for the entire station, conduct tests, and verify the configuration of the secondary circuit. The influence range is too large, and the reconstruction and expansion efficiency is low. At present, the reconstruction and expansion technology of smart substations is relatively immature, and it is impossible to guarantee that the reconstruction and expansion of the equipment during the reconstruction and expansion stage will not affect the reliable operation of the operating equipment.

As the configuration description file of the smart substation, the SCD file is an important basis for the operation and configuration of the secondary system. In the commissioning, acceptance, maintenance, overhaul and reconstruction and expansion of the smart substation, the management and control of the SCD file is very important. Model information of the secondary equipment, device communication parameter information, and configuration information associated with the secondary virtual circuit of the process. During the renovation and expansion of the smart substation or the engineering commissioning stage, the SCD file changes, causing the on-site commissioning or operation personnel to not know the direct differences between the versions, and whether the configuration information downloaded to the device has changed, and what kind of impact it will cause. In the process of reconstruction and expansion of smart substations, there is a link that generates the process layer configuration file of the device operation from the SCD file through the system configuration tool, and downloads it to the inside of the device (that is, the device below) for operation. The process layer configuration file is the CCD (Configured Circuit Description) file, the CCD file is the virtual circuit configuration file of the secondary device IED (Intelligent Electronic Device) of the intelligent substation, which is used to define the subscription and publication of the IED GOOSE (Generic Object Oriented Substation Events Generic Object Oriented Substation Events) and SV (Sampled Value) information configuration file, including the address mapping relationship between the internal address of the virtual loop and the external device (relative to the device with the CCD installed), the control block communication parameter information, the virtual terminal receiving port information, and the virtual terminal. To describe the information, the State Grid Corporation of China issued and implemented the "Technical Specifications for Relay Protection Engineering Documents for Smart Substations" to standardize the content and format of the unified specification of CCD files. IEC61850 uniformly models the data objects of substation automation systems, and divides IEDs into logical devices (LD), logical nodes (LN), data (DO) and data attributes (DA) from top to bottom, and LN is data, data Sets and a combination of various control blocks, which include the report control block RCB (Report Control Block) and the log control block LCB (Log Control Block). The control block means: the data block of data communication, and the control block contains the definition information related to the data.

SUMMARY OF THE INVENTION

In order to solve the deficiencies in the prior art, the present invention provides a method for analyzing the influence of CCD file changes based on CRC verification, which solves the problem that it is impossible to know whether the modification of the configuration file affects the configuration information of the running equipment during the reconstruction and expansion of the intelligent substation. All power outages are carried out in the whole station, and the efficiency of reconstruction and expansion is low.

In order to realize the above-mentioned goal, the present invention adopts the following technical scheme: a kind of CCD file change impact analysis method based on CRC check is characterized in that:

Step 1: Configure the SCD file used for the reconstruction and expansion device of the smart substation, export the new CCD file for the reconstruction and expansion of the device according to the SCD file, obtain the original CCD file from the smart substation device to be reconstructed and expand, and analyze the two files respectively. The data structure of a CCD file, obtain the configuration information of the GOOSE receiving control block and the SV receiving control block;

Step 2: The new CCD file and the original CCD file are identified based on the configuration information of the secondary loop, and the configuration information of the GOOSE receiving control block and the SV receiving control block are classified according to the same external device. The receiving GOOSE receiving control block and the SV receiving control block configuration information form a data set, and obtain several original and new data sets classified by the external device according to the GOOSE receiving control block and the SV receiving control block configuration information;

Step 3: Calculate the CRC check code for the several original and new data sets, and locate the changed external device by comparing the CRC check code;

Step 4: According to the original and new data sets corresponding to the located changed external devices, analyze the specific change information, and locate the affected area of reconstruction and expansion.

The aforementioned a kind of CCD file change impact analysis method based on CRC check is characterized in that: the GOOSE receiving control block configuration information is: the CCD file downloading device receives the GOOSE configuration information related to the external device data; the SV receiving control The block configuration information is: the CCD file downloading device receives the SV configuration information related to the data of the external device; the control block configuration information includes the communication parameters of the external device, port information and the mapping relationship between the internal and external addresses of the secondary virtual loop.

The aforementioned method for analyzing the impact of CCD file changes based on CRC verification is characterized in that: the SCD file configured for the smart substation reconstruction and expansion device is configured as follows: configuring the device model information, communication parameters, correlation Virtual terminals between devices.

The aforementioned a kind of CCD file change impact analysis method based on CRC check is characterized in that: in the described step 2, the GOOSE receiving control block and the SV receiving control block configuration information are classified according to the same external device, and the same external device is classified. Receive the GOOSE receiving control block and the SV receiving control block configuration information to form a data set, and the specific steps include:

1) Obtain the control block communication unique identifier of the control block according to the configuration information of the GOOSE receiving control block and the SV receiving control block, and obtain the name of the external device and the logical device name of the external device;

2) Obtain the logical device name of the external device according to the GOOSE receiving control block or SV receiving control block configuration information;

3) According to the combination name of the external device name and the logical device name and the logical device name, the external device name of the device is obtained, and the configuration information of the GOOSE receiving control block and the SV receiving control block under the same device name is grouped into one group.

The aforementioned a kind of CCD file change impact analysis method based on CRC check is characterized in that: described step 3, the concrete process is:

1) Calculate the CRC check code for several data sets classified by external devices according to the configuration information of the GOOSE receiving control block and the SV receiving control block;

2) Compare the CRC check value corresponding to the same external device in the original CCD file and the new CCD file. If they are the same, it is determined that the configuration information of the external device in the new CCD file has not changed. If the two CRC check values If the codes are inconsistent, it is determined that the configuration information of the external device in the new CCD file has been changed.

The aforementioned method for analyzing the impact of CCD file changes based on CRC verification is characterized in that: the calculation of the CRC verification code is specifically: using an exchange standard code sequence to calculate the four-byte CRC-32 verification code.

The aforementioned a kind of CCD file change impact analysis method based on CRC check is characterized in that: described step 4, specifically includes:

Extract communication parameters from the original and new data sets corresponding to the changed external device, compare the two communication parameters before and after reconstruction and expansion, and identify the changed communication parameter information;

Extract the virtual loop information from the original and new data sets corresponding to the changed external device, and compare and analyze the receiving address of the internal device and the sending address of the external device. If they are inconsistent, it is determined that the virtual loop information has changed.

Beneficial effects achieved by the present invention:

The invention analyzes the data structures of the two CCD files respectively, and obtains the configuration information of the GOOSE receiving control block and the SV receiving control block; the configuration information of the GOOSE receiving control block and the SV receiving control block is classified according to the same external device, and the Receive the GOOSE receiving control block and the SV receiving control block configuration information to form a data set, and obtain several original and new data sets classified by the external device according to the GOOSE receiving control block and the SV receiving control block configuration information; There is a CRC check code calculation with the new data set, and the changed external device is located by comparing the CRC check code; according to the original and new data sets corresponding to the located changed external device, the specific change information is analyzed, and the modified external device is located. Expand the sphere of influence. It ensures that the modification information during reconstruction and expansion does not affect the configuration information of the operating devices, quickly locates the affected area of reconstruction and expansion, avoids power outages for the entire station for commissioning, improves commissioning efficiency, reduces commissioning scope, and meets the application needs of secondary equipment reconstruction and expansion of smart substations.

Description of drawings

Fig. 1 is the flow chart of the method of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

As shown in Figure 1, a method for analyzing the impact of changes in CCD files based on CRC verification includes the following steps:

Step 1: Configure the SCD file used for the reconstruction and expansion device of the smart substation, export the new CCD file for the reconstruction and expansion of the device according to the SCD file, obtain the original CCD file from the smart substation device to be reconstructed and expand, and analyze the two files respectively. The data structure of a CCD file, obtain the configuration information of the GOOSE receiving control block and the SV receiving control block;

The configuration information of the GOOSE receiving control block is: the internal device (also called the device, that is, the device that downloads the CCD file) receives the GOOSE configuration information related to the data of the external device;

The SV receiving control block configuration information is: the device receives SV configuration information related to external device data;

Configure the SCD file used for the reconstruction and expansion of the smart substation device, specifically, configure the device model information added by the reconstruction and expansion, communication parameters, and virtual terminals between associated devices;

Due to the requirements of nine unified devices, all devices support uploading device configuration files and CCD files through FTP, so the original CCD files can be obtained from the smart substation devices to be renovated and expanded;

Obtain GOOSE receiving control block and SV receiving control block configuration information through GOOSE subscription and SV subscription information; the control block configuration information includes communication parameters of external devices, port information and the mapping relationship between the internal and external addresses of the secondary virtual loop.

Step 2: Use the method of identifying the new CCD file and the original CCD file of the smart substation reconstruction and expansion device based on the configuration information of the secondary circuit, and classify the configuration information of the GOOSE receiving control block and the SV receiving control block according to the same external devices. The receiving GOOSE receiving control block and the SV receiving control block configuration information of an external device form a data set, and obtain several original and new data sets classified by the external device according to the GOOSE receiving control block and the SV receiving control block configuration information;

Specific steps include:

1) Obtain the control block communication unique identifier appid of the control block according to the configuration information of the GOOSE receiving control block and the SV receiving control block, obtain the external device name IEDName and the logical device name LDName of the external device, for example: appid="IL2201ARPIT/LLN0$GO$ GCB1", the path is composed of: IEDName+LDName+/+LLN0+$+GO+$+GCBName, and the combination name of IEDName+LDName is obtained as IL2201ARPIT;

2) According to the GOOSE receiving control block or SV receiving control block configuration information, obtain the logical device name LDName of the external device, for example: <FCDA bType="Dbpos" daName="stVal" desc="1G position" doName="Pos"fc ="ST" ldInst="RPIT" lnClass="XSWI" lnInst="1" prefix="">, where ldInst is the logical device, and the obtained LDName is RPIT;

3) According to the combined name of IEDName and LDName and LDName, the IEDName of the device is obtained, and the received GOOSE and SV are grouped according to the device name. For example, according to IL2201ARPIT and RPIT, the IEDName can be obtained as IL2201A, and the GOOSE under the same device name is received. The control block is grouped with the SV receiving control block configuration information.

In the above, the method of identification based on the configuration information of the secondary circuit is adopted for the reconstruction and expansion device of the intelligent substation, and the GOOSE receiving control block and the SV receiving control block are classified according to the same external device.

Step 3: Calculate the CRC check code for different data sets of the device obtained in step 2, and locate the changed external device by comparing the CRC check code of the original CCD file and the new CCD file. The specific process includes:

1) For several data sets classified by external devices according to the configuration information of the GOOSE receiving control block and the SV receiving control block, use the exchange standard code sequence to calculate the four-byte CRC-32 check code;

2) Compare the CRC check value corresponding to the same external device in the original CCD file and the new CCD file. If they are the same, it is determined that the configuration information of the external device in the new CCD file has not changed. If the two CRC values are inconsistent , then it is determined that the configuration information of the external device in the new CCD file has changed;

Step 4: According to the original and new data sets corresponding to the located changed external devices, analyze the specific change information, and locate the affected area of reconstruction and expansion.

Specific steps include:

1) Extract the communication parameters from the original and new data sets corresponding to the changed external device, compare the two communication parameters before and after reconstruction and expansion, and identify the changed communication parameter information. The communication parameters include the control block communication address APPID, control Block physical address MAC-Address, control block virtual local area network VLAN-ID, control block priority VLAN-PRIORITY, etc.;

2) Extract the virtual loop information from the original and new data sets corresponding to the changed external device, and compare and analyze the receiving address of the internal device and the sending address of the external device. If they are inconsistent, determine that the virtual loop information has changed, such as loop information. :

<FCDA bType="Dbpos" daName="stVal" desc="1GPosition" doName="Pos" fc="ST"ldInst="RPIT" lnClass="XSWI" lnInst="1" prefix="">

<intAddr desc="Busbar 1 knife position" name="MUGO/GOINGGIO4.DPCSO1.stVal">

<DAI name="stVal" sAddr="45.0.1.9.2" />

</intAddr>

</FCDA>

Among them, FCDA is: Functionally Constrained Data Attribute functional constraint data attribute; bType: data type; daName: data attribute; desc: data description; doName: data object; fc: functional constraint; ldInst: logical device; lnClass: logical category; lnInst: serial number; prefix: prefix; intAddr: internal address; desc: object description; DAI: data attribute;

The sending address of the external device is: ldInst +/+ lnClass + lnInst + . + doName + . +daName, the receiving address of the internal device is the name in the intAddr element, and the sending address of the external device is: RPIT/XSWI1/.Pos. stVal, the internal address is: MUGO/GOINGGIO4.DPCSO1.stVal, the address is different, it is confirmed that the virtual circuit information has changed.

For the expansion line, the busbar protection device needs to be reconfigured and downloaded. As long as it is ensured that the CRC value of the virtual circuit received by the device that has been put into operation does not change in the CCD file of the busbar protection device, the configuration information of the device that has been put into operation and the busbar protection device will not be changed. , By comparing the interval CRC values before and after the reconstruction and expansion, it can be ensured whether the reconstruction or expansion affects the lines that have been put into operation.

The present invention analyzes the information content and format included in the CCD file, and in the CCD file, data transmission and data reception are independent control block information. For data reception, the receiving control block configuration information of each external device forms a data set, and the receiving The configuration information of the control block is automatically grouped according to the name of the receiving device and combined into a new character sequence information. CRC calculation is performed on each group of character sequence information. , locate and change the device configuration, and confirm that the configuration information of the reconstruction and expansion device and the operating device has not changed. For the operating device, it is not necessary to carry out the transmission experiment, and control the configuration information of the received control block to ensure that the modification information in the reconstruction and expansion does not affect the running device. The configuration information of the device can quickly locate the affected area of reconstruction and expansion, avoid power failure of the whole station for commissioning, improve commissioning efficiency, reduce commissioning scope, and meet the application needs of secondary equipment reconstruction and expansion of smart substations.

As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a 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, etc.) 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 present application. It will be understood that each flow and/or block in the flowcharts and/or block diagrams, and combinations of flows and/or blocks in the flowcharts and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in one or more of the flowcharts and/or one or more blocks of the block diagrams.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions An apparatus implements the functions specified in a flow or flows of the flowcharts and/or a block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in one or more of the flowcharts and/or one or more blocks of the block diagrams.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principle of the present invention, several improvements and modifications can also be made. These improvements and modifications It 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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