CN112633640A - Online control method for total station and measurement and control device model of intelligent substation - Google Patents
Online control method for total station and measurement and control device model of intelligent substation Download PDFInfo
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Abstract
The invention relates to an intelligent substation total station and measurement and control device model online control method, which utilizes an equipment communication network of a substation control layer of a substation to realize online collection of a total station SCD model file and a measurement and control device model file, realizes homology and consistency check of the total station and the measurement and control device model by relying on check rules of the total station SCD and the measurement and control model file, visually displays model versions and variation differences of the total station SCD and the measurement and control model file in a visual mode, and finally realizes online control of the substation total station SCD and the measurement and control model file facing operators, maintenance personnel and automation professionals by checking alarm, operation and maintenance files and human-computer interface state display, thereby improving the technical level of substation automation equipment control and improving the capability of safe operation and risk early warning of a substation.
Description
Technical Field
The invention relates to the technical field of power system dispatching automation, in particular to an intelligent substation total station and measurement and control device model online control method.
Background
With the increasing improvement of the related technologies of the intelligent transformer substation, the intelligent transformer substation gradually enters a large-scale practical stage. In an intelligent substation, a process layer network is connected with primary equipment and bay level equipment to complete real-time information exchange between the bay level equipment and the primary equipment and between the bay level equipment, a digital transmission technology (optical fiber Ethernet) is used for replacing secondary cables which are used in a conventional substation for years, a necessary technical basis is provided for realizing data sharing and equipment interoperability, and the important change can generate deep influence on various aspects of the form of the secondary equipment in the future substation, equipment debugging flow, substation overhaul and operation specification and the like.
Compared with the traditional transformer substation, a large part of drawings of secondary design of the intelligent transformer substation are changed into virtual terminal connection mapped by the SCD file, the SCD file is configured and generated by a design or integrator according to the virtual terminal connection, and then the CID file is exported from the SCD file by each equipment manufacturer and downloaded to the device to complete configuration. Namely, the SCD file of the total station replaces a design drawing to become a direct basis for debugging, operation and maintenance, and reconstruction and extension.
The accuracy of SCD file configuration is important for the safe operation of the intelligent substation, and particularly, the connection relation of a virtual terminal and the virtual terminal in the SCD file in the whole substation affects the connection relation of a tripping switch, a sampling loop and a secondary loop of the intelligent substation, and is very important for the safe operation of the intelligent substation. However, the SCD file is described by the SCL language, so that the configuration information of the whole station cannot be visually embodied, and the difficulty of mastering the configuration of the whole station in the whole process of design, school, verification, debugging, operation and maintenance, overhaul and reconstruction and extension is greatly increased.
Therefore, the enhancement of the SCD file management of the intelligent substation, including the operations of syntax and semantic checking, process layer CRC calculation, virtual terminal graphical comparison, device CID, CCD model storage and backup and the like of the SCD file version, becomes urgent and important research and practice work.
Disclosure of Invention
The invention provides an intelligent substation total station and measurement and control device model online control method, which realizes the centralized management of an intelligent substation total station system SCD model file and a measurement and control device model file, efficiently and conveniently completes a series of management functions of checking, comparing, visually displaying, version tracing and the like of the system SCD and the measurement and control model file, monitors the change of the system SCD file caused by the reconstruction and extension process in real time, ensures the safety, integrity, homology and consistency of the configuration information of the total station SCD and the measurement and control device to the maximum extent, changes the low-efficiency and fragile current situation of ensuring the correctness of the SCD file by depending on manpower, thereby ensuring and improving the safe operation level of the intelligent substation, providing technical means for online control of the intelligent substation total station and the measurement and control device model for substation operators, maintainers and automation professionals, and achieving the technical level of improving the operation and maintenance of the intelligent substation, the purposes of safe operation of the transformer substation and risk early warning are improved.
The invention solves the technical problem by adopting the technical scheme that an intelligent substation total station and measurement and control device model online control method is characterized in that: the method comprises the following steps:
s1: acquiring a total station SCD file, a measurement and control device CID and a CCD model check code recording file MCCD from a monitoring host of a substation control layer of a transformer substation;
s2: acquiring a total station SCD file of each monitoring host of a substation control layer of the transformer substation, checking whether total station SCD model files of double sets of monitoring hosts of the substation control layer are consistent or not, if so, entering the next step, otherwise, outputting an alarm and storing a check history record of inconsistency of the double sets of monitoring hosts of the substation control layer, and ending the process;
s3: and updating the SCD and the checking standard value of the configuration file of the CID and CCD file checking codes of the measurement and control device.
The method comprises the steps of utilizing an equipment communication network of a substation control layer of the transformer substation to achieve online collection of a total-station SCD model file and a measurement and control device model file, achieving homology and consistency verification of a total-station SCD model and a measurement and control device model by means of verification rules of the total-station SCD model and the measurement and control model file, visually displaying model versions and change differences of the total-station SCD model and the measurement and control model file in a visual mode, and finally achieving online control of the total-station SCD model and the measurement and control model file for operators, maintainers and automation professionals by means of checking alarm, operation and maintenance files and human-computer interface state display, improving the technical level of transformer substation automation equipment control and improving the capability of transformer substation safe operation and risk early warning.
As a preferable mode of the above, the step S3 includes the steps of:
s31: performing total-station SCD model file checking, entering the next step if the checking is consistent, and outputting an alarm if the checking is inconsistent, and entering the next step;
s32: checking the measurement and control CID and the CCD model, and updating the checking standard value if the checking is consistent; if the check is inconsistent, the check standard value is not updated, and a model abnormity alarm is output.
As a preferable scheme of the above scheme, the total-station SCD model file checking includes: calling a total station SCD model file and a checking code configuration file of a measurement and control device CID and a CCD file from a monitoring host, checking whether the called SCD is consistent with the SCD stored locally at the last time, outputting an SCD model change alarm when the called SCD is inconsistent with the SCD stored locally at the last time, displaying a checking result on an interface, and storing a checking history record of the total station SCD model file.
As a preferred scheme of the above scheme, the checking of the measurement and control CID and the CCD model is: checking the consistency of the CID and the CCD check code of each measurement and control device with the corresponding CID and the CCD check code of the newly acquired MCCD file, if the check result is inconsistent, triggering an equipment model abnormity warning prompt and generating an equipment model abnormity warning operation and maintenance file.
As a preferable scheme of the above scheme, the SCD model file is obtained by performing CRC check code calculation on the contents of the measurement and control CID file by an SCD model configuration tool.
As a preferred scheme of the above scheme, the measurement and control device CID and the CCD model check code recording file MCCD include a CID full-text check code, a CCD check code, and a core check code, and the core check code obtaining step is as follows:
s11: respectively carrying out CRC (cyclic redundancy check) code calculation on the contents of a Communication section, an IED section and a DataTypetemplates section in a CID (Communication identifier) model file of the measurement and control device to obtain corresponding CRC codes;
s12: and combining the obtained CRC character strings to obtain a total character string, and performing CRC calculation on the total character string to obtain a core check code.
As a preferred scheme of the above scheme, when the MCCD file is exported, both the CCD check code and the core check code are directly exported, and for the CID full-text check code, the processing procedure is as follows:
s41: directly exporting a CID full-text check code when the MCCD file is exported for the first time;
s42: under the condition that the MCCD file is exported, reading the MCCD file exported last time each time, and determining how to export the CID full-text check code according to whether the core check code exported this time changes relative to the core check code exported last time: if the core check code changes, calculating a new CID full-text check code and exporting the new CID full-text check code to a new MCCD file, and giving a prompt that the device needs to download the CID file again; and if the core check code is not changed, deriving the CID full-text check code in the MCCD file derived last time.
The invention has the advantages that: the method comprises the steps of utilizing an equipment communication network of a substation control layer of the transformer substation to achieve online collection of a total-station SCD model file and a measurement and control device model file, achieving homology and consistency verification of a total-station SCD model and a measurement and control device model by means of verification rules of the total-station SCD model and the measurement and control model file, visually displaying model versions and change differences of the total-station SCD model and the measurement and control model file in a visual mode, and finally achieving online control of the total-station SCD model and the measurement and control model file for operators, maintainers and automation professionals by means of checking alarm, operation and maintenance files and human-computer interface state display, improving the technical level of transformer substation automation equipment control and improving the capability of transformer substation safe operation and risk early warning.
Drawings
Fig. 1 is a schematic flow chart of an online control method for a total station and measurement and control device model of an intelligent substation in an embodiment.
Fig. 2 is a schematic flow chart of double-set inconsistency checking of the total-station SCD model in the embodiment.
FIG. 3 is a schematic flow chart of updating SCD and the reference check value of the measurement and control model in the embodiment.
Fig. 4 is a schematic flow chart of checking the total station SCD model file in the embodiment.
Fig. 5 is a schematic flow chart of measurement and control CID and CCD model checking in the embodiment.
Detailed Description
The technical solution of the present invention is further described below by way of examples with reference to the accompanying drawings.
Example (b):
the method for online control of the total station and the measurement and control device model of the intelligent substation in the embodiment can be manually controlled, and can also be automatically and periodically operated by a substation, as shown in fig. 1, the method comprises the following steps:
s1: generating a total-station SCD file and a corresponding measurement and control model check code description file through an SCD model configuration tool, storing the two files in a transformer substation monitoring background, and calling a measurement and control device CID and a CCD check code recording file MCCD from the monitoring background through SFTP service; calling a version information file program _ ver.xml of the measurement and control device in a DL \ T860 file service mode, wherein the version information file program _ ver.xml of the measurement and control device comprises a device software version, a measurement and control ICD, a CID, a CCD model file version and check code information;
and the SCD model configuration tool carries out four-byte CRC-32 check code calculation on the content of the measurement and control cid file, and the calculated four-byte CRC-32 check code is less than four bytes, and the high byte is supplemented with 0x 0. The CRC parameters are as follows:
a) CRC bit number Width: 32, a first step of removing the first layer;
t) the generation term Poly: 04C11DB 7;
u) initialization value Init: FFFFFF;
v) whether the data to be tested is reversed RefIn: true;
w) whether the calculated value is inverted RefOut: true;
x) output data exclusive or term xortout: FFFFFF;
y) Check result Check of string "123456789 abcdef": A2B4FD 62.
The Measuring and controlling Device check code Description file (MCCD for short) adopts E format Description and UTF-8 coding mode, the suffix name is MCCD, the MCCD file is named as [ transformer station name ]. MCCD, the MCCD file contains check code information, and the MCCD file is shown in the following table 1:
| attribute name | Explanation of the invention | Attribute value type |
| sn | The serial numbers are sequentially increased from 1 | INT32U |
| iedname | IED Name of measurement and control device | VisString255 |
| des | Chinese description of measurement and control device | VisString255 |
| manufacturer | Manufacturer(s) | VisString255 |
| cidchecksum | CID check code | VisString255 |
| ccdchecksum | CCD check code | VisString255 |
| corechecksum | Core check code | VisString255 |
TABLE 1
The CID check code is obtained by carrying out full-text CRC (cyclic redundancy check) code calculation on the CID file, and the CCD check code is obtained by calculating according to the existing standard of the national network.
The core check code is a four-byte CRC-32 check code generated by calculation according to the contents of a Communication section, an IED section and a DataTypetemplates section in the CID file, and the check code is related to the model configuration information of the device in the CID file and is not related to the contents of a name space shared by the CID files of the total station device, version information of the SCD file, revision history, total station virtual terminal CRC and the like. The system configuration tool can automatically judge whether to update the CID full-text check code in the MCCD file by checking whether the core check code changes when the MCCD file is exported every time.
The specific calculation method of the core check code is as follows:
s11: according to the complete content of Communication section (all contents from Communication beginning to end, and no need of deleting blank space and line-feed character in it), making four-byte CRC-32 check code calculation to obtain CrcComm, and making up 0x0 for high byte whose calculation result is less than four bytes, and the CRC parameter is identical to that when CID full-text check code is calculated. Similarly, CRC check codes CrcIed and CrcDtt of each segment are respectively calculated according to the complete contents of the IED segment and the DataTypetemplates segment;
s12: and (3) connecting the 3 CRC character strings generated in the S11 according to a fixed sequence, namely CrcText = CrcCom + CrcIed + CrcDtt, and finally calculating the four-byte CRC-32 check code according to CrcText to be the core check code.
When the system configuration tool exports the MCCD file, the CCD check code and the core check code are both directly exported, and for the CID full-text check code, special treatment is as follows:
s41: directly exporting a CID full-text check code when the MCCD file is exported for the first time;
s42: under the condition that the MCCD file is exported, when the MCCD file is exported every time, the tool reads the MCCD file exported last time, and determines how to export the CID full-text check code according to whether the core check code exported this time changes relative to the core check code exported last time: if the core check code changes, the information of the model of the device is changed, the device needs to download the CID file again, at the moment, a new CID full-text check code is calculated and exported to a new MCCD file, and the tool should give a prompt that the device needs to download the CID file again; if the core check code is not changed, the model information of the device is not changed, the CID file is not required to be downloaded again at the moment, and the CID full-text check code in the MCCD file exported last time is still exported.
S2: the substation control layer monitoring host of the transformer substation has at least two, the substation control layer monitoring host of the transformer substation is provided with two in this embodiment, as shown in fig. 2, the total substation SCD model file and the check code configuration file of the CID file of the measurement and control device are respectively called from the two monitoring hosts, whether the SCDs sent by the two monitoring hosts are consistent or not is checked, if the SCDs are inconsistent, a 'inconsistent alarm of double sets of SCD models of the monitoring hosts is output', a check result is displayed on an interface, a historical record of the inconsistent check of the double sets of SCD models of the total substation is stored, and the process is ended; if the check results are consistent, the interface displays the check results, stores double sets of inconsistent check history records of the SCD model in the whole station, and can further select to check the SCD model file change of a single monitoring host;
s3: updating the checking standard value of the SCD, the CID of the measurement and control device and the configuration file checking standard value of the CCD file checking code, as shown in FIG. 3, the specific steps are as follows:
s31: performing total-station SCD model file checking, as shown in FIG. 4, using a configuration file of checking codes of a total-station SCD model file called from a monitoring host, a measurement and control device CID and a CCD file, checking whether the called SCD is consistent with the SCD locally stored last time, outputting an SCD model change alarm if the called SCD is inconsistent with the SCD locally stored last time, displaying a checking result on an interface, storing a total-station SCD model file checking history record, and entering the next step; if the checking is consistent, directly entering the next step;
s32: and performing measurement and control CID and CCD model checking, as shown in FIG. 5, checking the consistency of the measurement and control device CID and CCD check code of each measurement and control device with the corresponding CID and CCD check code of the newly acquired MCCD file, if the check result is inconsistent, triggering an equipment model abnormity alarm prompt, not updating the check standard value, and generating an equipment model abnormity alarm operation and maintenance file. And if the checking is consistent, updating the checking standard value, namely storing the newly acquired SCD and the configuration file of the CID and the CCD file checking code of the measurement and control device as the checking standard value, and triggering a change resetting signal of the SCD model file of the total station.
The method for online management and control of the total station and the measurement and control device model of the intelligent substation realizes a series of management functions such as verification, comparison, visual display and version tracing of the SCD model file of the total station system of the intelligent substation and the measurement and control device model file, monitors the SCD file change of the intelligent substation in real time, ensures the safety, integrity, homology and consistency of configuration information of the total station SCD and the measurement and control device to the maximum extent, provides a technical means for online management and control of the total station and the measurement and control device model of the intelligent substation for substation operators, maintainers and automation professionals, and achieves the purposes of improving the technical level of operation and maintenance of the intelligent substation and promoting safe operation and risk early warning of the substation.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (7)
1. An intelligent substation total station and measurement and control device model online control method is characterized by comprising the following steps: the method comprises the following steps:
s1: acquiring a total station SCD file, a measurement and control device CID and a CCD model check code recording file MCCD from a monitoring host of a substation control layer of a transformer substation;
s2: acquiring a total station SCD file of each monitoring host of a substation control layer of the transformer substation, checking whether total station SCD model files of double sets of monitoring hosts of the substation control layer are consistent or not, if so, entering the next step, otherwise, outputting an alarm and storing a check history record of inconsistency of the double sets of monitoring hosts of the substation control layer, and ending the process;
s3: and updating the SCD and the checking standard value of the configuration file of the CID and CCD file checking codes of the measurement and control device.
2. The method for online control over the total stations and the measurement and control device model of the intelligent substation according to claim 1, is characterized in that: the step S3 includes the steps of:
s31: performing total-station SCD model file checking, entering the next step if the checking is consistent, and outputting an alarm if the checking is inconsistent, and entering the next step;
s32: checking the measurement and control CID and the CCD model, and updating the checking standard value if the checking is consistent; if the check is inconsistent, the check standard value is not updated, and a model abnormity alarm is output.
3. The method for online management and control of the total station and measurement and control device model of the intelligent substation according to claim 2, characterized in that: the total-station SCD model file checking comprises the following steps: calling a total station SCD model file and a checking code configuration file of a measurement and control device CID and a CCD file from a monitoring host, checking whether the called SCD is consistent with the SCD stored locally at the last time, outputting an SCD model change alarm when the called SCD is inconsistent with the SCD stored locally at the last time, displaying a checking result on an interface, and storing a checking history record of the total station SCD model file.
4. The method for online management and control of the total station and measurement and control device model of the intelligent substation according to claim 2, characterized in that: the measurement and control CID and CCD model checking comprises the following steps: checking the consistency of the CID and the CCD check code of each measurement and control device with the corresponding CID and the CCD check code of the newly acquired MCCD file, if the check result is inconsistent, triggering an equipment model abnormity warning prompt and generating an equipment model abnormity warning operation and maintenance file.
5. The method for online management and control of the total station and measurement and control device model of the intelligent substation according to claim 1, 2, 3 or 4, characterized in that: and the SCD model file is obtained by calculating the CRC of the content of the measurement and control CID file by an SCD model configuration tool.
6. The method for online management and control of the total station and measurement and control device model of the intelligent substation according to claim 1, 2, 3 or 4, characterized in that: the measuring and controlling device CID and CCD model check code recording file MCCD comprises a CID full-text check code, a CCD check code and a core check code, and the core check code acquisition steps are as follows:
s11: respectively carrying out CRC (cyclic redundancy check) code calculation on the contents of a Communication section, an IED section and a DataTypetemplates section in a CID (Communication identifier) model file of the measurement and control device to obtain corresponding CRC codes;
s12: and combining the obtained CRC character strings to obtain a total character string, and performing CRC calculation on the total character string to obtain a core check code.
7. The method for online management and control of the total station and measurement and control device model of the intelligent substation according to claim 6, wherein the method comprises the following steps: when exporting the MCCD file, the CCD check code and the core check code are both exported directly, and for the CID full-text check code, the processing process is as follows:
s41: directly exporting a CID full-text check code when the MCCD file is exported for the first time;
s42: under the condition that the MCCD file is exported, reading the MCCD file exported last time each time, and determining how to export the CID full-text check code according to whether the core check code exported this time changes relative to the core check code exported last time: if the core check code changes, calculating a new CID full-text check code and exporting the new CID full-text check code to a new MCCD file, and giving a prompt that the device needs to download the CID file again; and if the core check code is not changed, deriving the CID full-text check code in the MCCD file derived last time.
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