CN112651601A - Online control method for interlocking logic of transformer substation - Google Patents
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Abstract
The invention relates to a transformer substation interlocking logic online control method, which utilizes an equipment communication network of a transformer substation control layer to realize online acquisition of an overall interlocking logic of an overall station and a measurement and control device, realizes homology of the overall station and the measurement and control device interlocking logic by consistency check according to an interlocking logic check rule, adopts a visual mode to visually display the logic of the measurement and control device interlocking logic, and finally realizes online visual control of the transformer substation interlocking logic facing operators, maintainers and automation professionals by checking alarm, operation and maintenance files and human-computer interface state display, thereby improving the technical level of misoperation prevention of a transformer substation and improving the capability of safe operation and risk early warning of the transformer substation.
Description
Technical Field
The invention relates to the technical field of power system dispatching automation, in particular to a transformer substation interlocking logic online control method.
Background
The transformer substation interlocking logic is an important link for ensuring misoperation prevention of the transformer substation and safe and reliable operation of a power grid, and consists of the total-station interlocking logic of a monitoring system and the interlayer measurement and control device interlocking logic, and the two parts can play a role independently and can also cooperate to complete the misoperation prevention function. The monitoring system total station interlocking logic collects the telesignalling telemetering information of all equipment in the total station from the automatic system monitoring network, and performs error-proof judgment on the operation of all equipment in the total station; the interlayer measurement and control device prevents error judgment on the operation of the spacer equipment by acquiring remote signaling and remote measuring information related to the spacer and cross-spacer remote signaling and remote measuring information acquired by the station control layer GOOSE.
The electric misoperation accident causes great threats to the power grid safety, equipment safety and personal safety, particularly, the capacity scale is larger and larger along with the continuous development of the power grid, the influence range after the accident is generated is greatly expanded, even the breakdown of the whole power grid can be caused, and the prevention of the electric misoperation is gradually developed to become one of important measures for guaranteeing the electric power safety production. Therefore, timely, effective and reliable control over the total station interlocking logic and the bay level measurement and control device interlocking logic on line becomes an urgent need for ensuring safe and reliable operation of a power grid and a transformer substation.
Disclosure of Invention
The invention provides a transformer substation interlocking logic online control method, which provides a technical means of transformer substation interlocking logic online visual control for transformer substation operators, maintainers and automation professionals, so as to achieve the purposes of improving the technical level of transformer substation misoperation prevention and improving transformer substation safe operation and risk early warning.
The technical scheme adopted by the invention for solving the technical problem is that the online control method of the interlocking logic of the transformer substation comprises the following steps:
s1: acquiring a total station interlocking logic file and a total station measurement and control interlocking logic file check code recording file from a substation control layer monitoring host of a transformer substation;
s2: acquiring a total station linkage locking logic file of each monitoring host of a substation control layer of the transformer substation, checking whether the total station linkage locking logic files of the double sets of monitoring hosts of the substation control layer are consistent, if so, entering the next step, otherwise, triggering a double-set inconsistency warning prompt of the total station linkage locking logic files, generating corresponding double-set inconsistency warning operation and maintenance files of the total station linkage locking logic files, and ending the process;
s3: and updating the total station interlocking logic file and the checking standard value of the total station measurement and control interlocking logic file checking code recording file.
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 the total station interlocking logic and the measurement and control device interlocking logic, achieving homology of the total station interlocking logic and the measurement and control device interlocking logic through consistency check according to an interlocking logic check rule, visually displaying the logic of the measurement and control device interlocking logic in a visual mode, and finally achieving online visual management and control of the transformer substation interlocking logic through checking alarm, operation and maintenance files and human-computer interface state display.
As a preferable mode of the above, the step S3 includes the steps of:
s31: performing total station interlocking logic file checking, if the checking is consistent, entering the next step, and if the checking is inconsistent, outputting an alarm, and entering the next step;
s32: performing total station measurement and control interlocking logic file checking, and updating a 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 checking of the total station interlocking logic file is as follows: the method comprises the steps that a configuration file of a total station interlocking logic file called from a monitoring host and a verification record file of a measurement and control interlocking logic file are utilized, whether the called total station interlocking logic file is consistent with a locally stored standard total station interlocking logic file is verified, a change alarm of the total station interlocking logic file is output when the called total station interlocking logic file is inconsistent with the locally stored standard total station interlocking logic file, a verification result is displayed on an interface, a history record of total station interlocking inconsistency is stored, and a history record of total station interlocking inconsistency is stored when the called total station interlocking logic file is consistent with the stored history record file.
As a preferred scheme of the above scheme, the total station measurement and control interlocking logic file checking includes: the method comprises the steps of acquiring measurement and control interlocking logic files of a measurement and control device one by one, calculating a check code, comparing the calculated check code with a measurement and control interlocking check code corresponding to a total station measurement and control interlocking logic file check record file, achieving consistency check of the measurement and control interlocking logic files, outputting an abnormal alarm of the measurement and control interlocking logic files and an abnormal operation and maintenance file of the measurement and control interlocking logic files when the check is abnormal, displaying a check result on an interface, and storing a historical inconsistent check record of the measurement and control interlocking logic files.
As a preferable scheme of the above scheme, the measurement and control interlocking logic file check code record file includes a serial number, an IEDName, a chinese description, a manufacturer, and a check code.
As a preferable scheme of the above scheme, the check code calculation method includes: and (4) calculating a four-byte CRC-32 check code for the contents of the measurement and control linkage locking logic file, wherein the calculated four-byte CRC-32 check code is less than four bytes, and the high byte is supplemented with 0x 0.
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 the total station interlocking logic and the measurement and control device interlocking logic, achieving consistency check of homology of the total station interlocking logic and the measurement and control device interlocking logic by means of an interlocking logic check rule, visually displaying the logic of the measurement and control device interlocking logic in a visual mode, and finally achieving online visual management and control of the transformer substation interlocking logic facing 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 misoperation prevention of the transformer substation, and improving the safety operation and risk early warning capability of the transformer substation.
Drawings
Fig. 1 is a schematic flow chart of an online control method of interlocking logic of a substation in an embodiment.
Fig. 2 is a schematic flow chart of a comparison of two sets of inconsistencies of the total station interlocking logic file in the embodiment.
FIG. 3 is a flowchart illustrating the updating of the calibration standard according to the embodiment.
Fig. 4 is a schematic flow chart of checking a total station interlocking logic file in the embodiment.
Fig. 5 is a schematic flow chart of checking a total station measurement and control interlocking logic file 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 online control method for the interlocking logic of the transformer 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 online control method includes the following steps:
s1: the method comprises the steps that a monitoring background carries out unified configuration on a total station and a single measurement and control interlocking logic file, a total station measurement and control interlocking logic file check record file (xxx. wfcrc) is output, online collection of the total station measurement and control interlocking logic and measurement and control device interlocking logic is achieved by using an equipment communication network of a substation control layer, a substation is respectively communicated with a monitoring host and a measurement and control device, the total station interlocking logic file (substation) and a matched measurement and control interlocking logic file check record file (xxx.wfcrc) are obtained from the monitoring host in an SFTP mode and stored in a specified file directory, and the measurement and control interlocking logic file (wf.dat) is obtained from the measurement and control device in a DL/T860 standard file service mode. (ii) a
The measurement and control interlocking logic file check record file (xxx.wfcrc) contains file content check code information of all the individual measurement and control devices derived from the total interlocking logic file (xxx.wf).
The "measurement and control interlocking logic file" (wf.dat) file signal comprises: self-sampling in signals and Goose signals (signals do not contain non-self-sampling signals).
And (3) checking code calculation rules of the measurement and control interlocking logic file (wf.dat): and (3) performing four-byte CRC-32 check code calculation on the contents of the measurement and control interlocking logic file (wf.dat), wherein 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 measurement and control interlocking logic file check record file (xxx. wfcrc) adopts E format description and UTF-8 coding mode, and the suffix name is wfcrc. The file naming rule is [ substation name ]. wfcrc.
The measurement and control interlocking logic file check record file comprises check code information, the check information comprises a serial number, IEDName, Chinese description, manufacturer and check code, and the following table 1 shows that:
| 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 |
| checksum | Check code | VisString255 |
TABLE 1
S2: the monitoring host of the station control layer of the transformer substation is provided with at least two monitoring hosts, in the embodiment, the monitoring host of the station control layer of the transformer substation is provided with two monitoring hosts, as shown in fig. 2, a total station interlocking logic file and a total station measurement and control interlocking logic file check code recording file are respectively called from the two monitoring hosts, whether the total station interlocking logic files sent by the two monitoring hosts are consistent or not is verified, a total station interlocking file double-set inconsistency alarm is output when the total station interlocking logic files are inconsistent, a verification result is displayed on an interface, a total station interlocking file double-set inconsistency verification history record is stored, and the process is ended; and if the check results are consistent, displaying the check results on an interface, storing double sets of inconsistent check history records of the total station interlocking file, and further selecting to check the total station interlocking logic file of a single monitoring host.
S3: updating the check standard value of the total station interlocking logic file and the check code record file check standard value of the total station measurement and control interlocking logic file, as shown in fig. 3, the specific steps are as follows:
s31: performing total-station interlocking logic file checking, as shown in fig. 4, checking whether the "total-station interlocking logic file" called from the monitoring host is consistent with a locally stored standard "total-station interlocking logic file" by using a configuration file of the "total-station interlocking logic file" and a check record file of the "measurement and control interlocking logic file" called from the monitoring host, outputting a change alarm of the total-station interlocking logic file if the "total-station interlocking logic file" is inconsistent with the locally stored standard "total-station interlocking logic file", displaying a checking result on an interface, storing a total-station interlocking inconsistency checking history, entering the next step, storing the total-station interlocking inconsistency checking history if the "total-station interlocking logic file" is consistent with the locally stored.
S32: checking the total station measurement and control interlocking logic file, as shown in fig. 5, acquiring measurement and control interlocking logic files of the measurement and control device one by one, calculating a check code, comparing the calculated check code with the measurement and control interlocking check code corresponding to the total station measurement and control interlocking logic file check record file, so as to realize consistency check of the measurement and control interlocking logic file, and if the check results are consistent, storing the newly acquired total station measurement and control interlocking logic file and the total station measurement and control interlocking logic file check code record file as check standard values, and triggering the total station measurement and control interlocking logic file to check as an inconsistent alarm return signal; if the check results are inconsistent, outputting an abnormal alarm of the measurement and control interlocking logic file and an abnormal operation and maintenance file of the measurement and control interlocking logic file, displaying the check results on an interface, and storing the inconsistent check history of the measurement and control interlocking logic file.
The transformer substation interlocking logic online control method acquires interlocking logic of a total substation and a measurement and control device on line, reflects homology and consistency of the interlocking logic in real time, effectively assists operation and maintenance personnel to monitor and early warn electrical misoperation accidents, guides the operation and maintenance personnel to carry out targeted maintenance in time, and practically ensures safe and stable operation of a power grid and the transformer 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 (6)
1. A transformer substation interlocking logic online control method is characterized by comprising the following steps: the method comprises the following steps:
s1: acquiring a total station interlocking logic file and a total station measurement and control interlocking logic file check code recording file from a substation control layer monitoring host of a transformer substation;
s2: acquiring a total station linkage locking logic file of each monitoring host of a substation control layer of the transformer substation, checking whether the total station linkage locking logic files of the double sets of monitoring hosts of the substation control layer are consistent, if so, entering the next step, otherwise, triggering a double-set inconsistency warning prompt of the total station linkage locking logic files, generating corresponding double-set inconsistency warning operation and maintenance files of the total station linkage locking logic files, and ending the process;
s3: and updating the check standard value of the total-station interlocking logic file and the check code record file check standard value of the total-station measurement and control interlocking logic file.
2. The online control method for the interlocking logic of the transformer substation according to claim 1, characterized by comprising the following steps: the step S3 includes the steps of:
s31: performing total station interlocking logic file checking, if the checking is consistent, entering the next step, and if the checking is inconsistent, outputting an alarm, and entering the next step;
s32: performing total station measurement and control interlocking logic file checking, and updating a 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 online control method for the interlocking logic of the transformer substation according to claim 2, characterized by comprising the following steps: the total station interlocking logic file checking comprises the following steps: the method comprises the steps that a configuration file of a total station interlocking logic file called from a monitoring host and a verification record file of a measurement and control interlocking logic file are utilized, whether the called total station interlocking logic file is consistent with a locally stored standard total station interlocking logic file is verified, a change alarm of the total station interlocking logic file is output when the called total station interlocking logic file is inconsistent with the locally stored standard total station interlocking logic file, a verification result is displayed on an interface, a history record of total station interlocking inconsistency is stored, and a history record of total station interlocking inconsistency is stored when the called total station interlocking logic file is consistent with the stored history record file.
4. The online control method for the interlocking logic of the transformer substation according to claim 2, characterized by comprising the following steps: the total station measurement and control interlocking logic file checking comprises the following steps: the method comprises the steps of acquiring measurement and control interlocking logic files of a measurement and control device one by one, calculating a check code, comparing the calculated check code with a measurement and control interlocking check code corresponding to a total station measurement and control interlocking logic file check record file, achieving consistency check of the measurement and control interlocking logic files, outputting an abnormal alarm of the measurement and control interlocking logic files and an abnormal operation and maintenance file of the measurement and control interlocking logic files when the check is abnormal, displaying a check result on an interface, and storing a historical inconsistent check record of the measurement and control interlocking logic files.
5. The online control method for the interlocking logic of the transformer substation according to claim 1, 2, 3 or 4, is characterized in that: the measurement and control linkage locking logic file check code record file comprises a serial number, an IEDName, a Chinese description, a manufacturer and a check code.
6. The online control method for the interlocking logic of the transformer substation according to claim 5, characterized in that: the check code calculation method comprises the following steps: and (4) calculating a four-byte CRC-32 check code for the contents of the measurement and control linkage locking logic file, wherein the calculated four-byte CRC-32 check code is less than four bytes, and the high byte is supplemented with 0x 0.
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