CN117688618A - Fixed value checking and modifying method for secondary equipment of power system - Google Patents
Fixed value checking and modifying method for secondary equipment of power system Download PDFInfo
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Abstract
The invention discloses a method for checking and modifying fixed values of secondary equipment of an electric power system, which comprises the steps of reading fixed value data and equipment data of the equipment of the electric power system when the equipment is put into operation; importing the read fixed value data into a fixed value list template to obtain an operation fixed value list; converting the operation fixed value list into a picture format to obtain an operation fixed value list picture; importing the read equipment data into an equipment template to obtain an equipment regulation list, and converting the regulation list into a picture format to obtain an equipment regulation list picture; acquiring an approval value sheet picture and an authorization value sheet picture; the invention checks the fixed value data in the operation fixed value single picture, the transmission check fixed value single picture, the authorization fixed value single picture and the equipment adjustment single picture through the fixed value data in the equipment adjustment single picture and the authorization fixed value single picture, ensures that the fixed value data of the authorization fixed value single picture is in the range of the equipment adjustment single picture, ensures the use safety of the power system equipment and removes the hidden trouble of equipment use.
Description
Technical Field
The invention relates to the technical field of maintenance of secondary equipment of a power system, in particular to a method for checking and modifying a fixed value of the secondary equipment of the power system.
Background
The secondary equipment of the power system is auxiliary equipment for monitoring, measuring, controlling, protecting and adjusting primary equipment in the power system, is the guarantee of safe operation of the power system, and reasonably arranges the fixed value of the secondary equipment is an important condition for guaranteeing safe operation of a power grid.
For the modification and check work of the fixed value of the secondary equipment, firstly, determining the protection fixed value of the secondary equipment according to setting calculation, forming an editable fixed value sheet, reporting the editable fixed value sheet to a management department for approval, and after the management department finishes approval, converting the approved fixed value sheet into a picture format or a scanning piece form for ensuring that the fixed value sheet is not tampered, and then issuing the fixed value sheet to an operator and an inspection staff; and then, the operator is responsible for writing the fixed value sheet into the secondary equipment to complete the modification of the customization of the secondary equipment, and the inspection operator is responsible for checking whether the fixed value sheet issued by the management department is consistent with the printed fixed value sheet after the secondary equipment is put into operation. Because the form information is usually up to hundreds of pieces, if the manual comparison is carried out, the work repeatability is strong, the time is long, and the error rate is high; even if character recognition technologies such as OCR are adopted for comparison, the accuracy of the comparison result is unstable, powerful guarantee is difficult to provide, and review still needs to be ensured manually.
The existing application number 202011240332.9 is named as a method and a system for checking and modifying the fixed value of a secondary device of a power system, and the method is characterized in that character recognition is carried out on an operation fixed value single picture, an approval fixed value single picture and an authorization fixed value single picture to extract fixed value data in the pictures, if the operation fixed value single picture is inconsistent with the fixed value data extracted by the operation fixed value single picture, the approval fixed value single picture and the authorization fixed value single picture, similarity analysis is carried out on the operation fixed value single picture and the authorization fixed value single picture, and if the similarity meets a preset condition, the fixed value data corresponding to the authorization fixed value single picture is imported into the secondary device to modify the fixed value data of the secondary device.
In the scheme, the secondary equipment can be written when the similarity between the authorized value order picture and the matched check value order picture is higher, but the higher similarity can cause the fixed value data in the authorized value order picture to deviate from the working data, so that overload operation exists in the power system equipment and potential safety hazards of the power system equipment exist.
Therefore, in order to overcome the above-mentioned shortcomings, it is needed to design a method for checking and modifying the fixed value of the secondary equipment of the power system.
Disclosure of Invention
The invention aims to provide a method for checking and modifying a fixed value of secondary equipment of an electric power system, which aims to solve the problems in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme: a method for checking and modifying the fixed value of secondary equipment of an electric power system comprises the following steps:
s1: reading fixed value data and equipment data of the power system equipment put into operation;
s2: importing the read fixed value data into a fixed value list template to obtain an operation fixed value list; converting the operation fixed value list into a picture format to obtain an operation fixed value list picture;
s3: importing the read equipment data into an equipment template to obtain an equipment regulation list, and converting the regulation list into a picture format to obtain an equipment regulation list picture;
s4: acquiring an approval value sheet picture and an authorization value sheet picture;
s5: performing character recognition on the operation fixed value single picture, the transmission check value single picture, the authorization fixed value single picture and the equipment adjustment single picture, extracting corresponding fixed value data, checking the fixed value data extracted by the authorization fixed value single picture and the equipment adjustment single picture, and if the condition is met, writing the fixed value data corresponding to the authorization fixed value single picture into the power system equipment to modify the fixed value data of the power system equipment; if the operation fixed value single picture is inconsistent with the approval fixed value single picture and the fixed value data extracted by the authorization fixed value single picture, continuing to execute the step S6;
s6: performing image similarity analysis on the check value sending single picture and the authorization value sending single picture; if the preset condition is met, writing the fixed value data corresponding to the authorized fixed value single picture into the power system equipment to modify the fixed value data of the power system equipment; otherwise, a warning prompt is sent out.
Preferably, in the step S5, if the fixed value data of the authorized fixed value single picture is not within the range of the fixed value data extracted from the device adjustment single picture, the authorized fixed value single picture is modified or replaced.
Preferably, in the step S5, before writing the fixed value data corresponding to the authorized fixed value single picture into the power system device, the operation fixed value single picture and the approval fixed value single picture are subjected to difference region image extraction, so as to obtain a plurality of pairs of difference region images;
performing character recognition on the plurality of pairs of difference area images, and extracting a plurality of pairs of difference constant value data;
taking a plurality of pairs of difference constant value data as analysis objects, and performing multi-target fuzzy comprehensive analysis to obtain recommended constant value data; calculating deviation indexes of the fixed value data of the transmitted check value single picture and the authorized fixed value single picture and the recommended fixed value data respectively; if the deviation index corresponding to the authorized value order picture is smaller, importing the value data corresponding to the authorized value order picture into the power system equipment to modify the value data of the power system equipment; otherwise, a warning prompt is sent out.
Preferably, the fixed value item corresponding to each difference area image is determined according to the fixed value item position matching file pre-configured by the fixed value single template.
Preferably, a histogram comparison method or a feature point matching algorithm is adopted to analyze the image similarity.
Preferably, the fixed value data in the modified or replaced authorized fixed value list picture is matched with the fixed value data extracted from the device regulation list picture.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the fixed value data in the equipment regulation single picture and the fixed value data in the authorized fixed value single picture are checked, so that the fixed value data of the authorized fixed value single picture is ensured to be in the range of the equipment regulation single picture, the use safety of the power system equipment is ensured, and the hidden danger of the equipment is removed.
The invention can obtain the fixed value list with high credibility by combining the image data extraction and the image similarity analysis, and improves the efficiency of the modification and verification work of the fixed value list of the power system equipment and ensures the verification accuracy when being applied to the operation and maintenance process of the fixed value list of the power system equipment.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a technical scheme that: a method for checking and modifying the fixed value of secondary equipment of an electric power system comprises the following steps:
s1: reading fixed value data and equipment data of the power system equipment put into operation;
s2: importing the read fixed value data into a fixed value list template to obtain an operation fixed value list; converting the operation fixed value list into a picture format to obtain an operation fixed value list picture;
s3: importing the read equipment data into an equipment template to obtain an equipment regulation list, and converting the regulation list into a picture format to obtain an equipment regulation list picture;
s4: acquiring an approval value sheet picture and an authorization value sheet picture;
s5: performing character recognition on the operation fixed value single picture, the transmission check value single picture, the authorization fixed value single picture and the equipment adjustment single picture, extracting corresponding fixed value data, checking the fixed value data extracted by the authorization fixed value single picture and the equipment adjustment single picture, and if the condition is met, writing the fixed value data corresponding to the authorization fixed value single picture into the power system equipment to modify the fixed value data of the power system equipment; if the operation fixed value single picture is inconsistent with the approval fixed value single picture and the fixed value data extracted by the authorization fixed value single picture, continuing to execute the step S6;
s6: performing image similarity analysis on the check value sending single picture and the authorization value sending single picture; if the preset condition is met, writing the fixed value data corresponding to the authorized fixed value single picture into the power system equipment to modify the fixed value data of the power system equipment; otherwise, a warning prompt is sent out.
The device data includes data range values used by each component of the power system device, and the data range values of the component need to be modified after the component is replaced by the power system device.
In the step S1, the fixed value data and the device data of the power system device put into operation are collected or read by the data collection device of the power system device, the read fixed value data is processed in a certain format and then is imported into the fixed value list template, so as to obtain an operation fixed value list, and then the operation fixed value list is converted into a picture file by the picture conversion tool, so that an operation fixed value list picture is obtained.
The approval value list is obtained by only inputting the fixed value data calculated by the setting into a fixed value list template; however, since the approval value sheet is editable, it is necessary to convert the approval value sheet into a picture file, and the difficulty of tampering is increased.
The authorization value list picture is converted into a picture file by the authorization value list, and the authorization value list is actually a transmitted check value list which is checked by an auditor, and the authorization value list picture is converted into the picture file to prevent the picture file from being tampered.
In the invention, the same fixed value single template is used for filling the fixed value data by the operation fixed value single, the transmission check fixed value single, the authorization fixed value single and the equipment regulation single. In general, the power supply mechanism will set up a fixed value form template, i.e. design a word or Excel fixed value form template, so the fixed value form template is electronic and editable. Furthermore, importing external data into word or Excel may be implemented through development tools of word or Excel.
The content formats of the running fixed value list, the transmitting and checking fixed value list and the authorizing fixed value list are kept consistent, namely the content format of the fixed value list template is adopted. The invention converts the operation fixed value list, the transmission check fixed value list and the authorization fixed value list into the picture file, so that the data cannot be directly edited, and the credibility of the data can be improved.
It should be noted that, when implementing the steps S2 and S3, the OCR technology is adopted to convert the text in the picture into text format, and the text information in the picture is extracted by combining with the word processing software, and then the configuration file of the fixed value single template is combined for processing, so as to obtain the fixed value data of each fixed value single picture.
Because the OCR technology has a certain misreading rate, the defect of the accuracy of the OCR technology is overcome by the design of redundancy judgment, namely judging whether the operation fixed value single picture is consistent with the approval fixed value single picture or not and whether the fixed value data between the operation fixed value single picture and the authorization fixed value single picture is consistent. If the operation fixed value single picture is consistent with the fixed value data of the approval fixed value single picture, or the operation fixed value single picture is consistent with the fixed value data of the authorization fixed value single picture, the approval fixed value single or the authorization fixed value single is considered to be credible, and the step S6 is not required to be continuously executed; if the fixed value data of the operation fixed value single picture and the fixed value data of the approval fixed value single picture are inconsistent, and the fixed value data of the operation fixed value single picture and the fixed value data of the authorization fixed value single picture are inconsistent, the approval fixed value single or the authorization fixed value single is not credible at the moment, namely, the step S6 is needed to be entered.
In the implementation of the step S6, a preset condition is set, such as how much proportion the similarity needs to reach. In addition, the invention adopts a histogram comparison method or a characteristic point matching algorithm to analyze the image similarity.
In the step S5, if the fixed value data of the authorized fixed value single picture is not within the range of the fixed value data extracted by the device adjustment single picture, the authorized fixed value single picture is modified or replaced.
In the step S5, before writing the fixed value data corresponding to the authorized fixed value single picture into the power system device, performing differential area image extraction on the operation fixed value single picture and the approval fixed value single picture to obtain a plurality of pairs of differential area images;
performing character recognition on the plurality of pairs of difference area images, and extracting a plurality of pairs of difference constant value data;
taking a plurality of pairs of difference constant value data as analysis objects, and performing multi-target fuzzy comprehensive analysis to obtain recommended constant value data; calculating deviation indexes of the fixed value data of the transmitted check value single picture and the authorized fixed value single picture and the recommended fixed value data respectively; if the deviation index corresponding to the authorized value order picture is smaller, importing the value data corresponding to the authorized value order picture into the power system equipment to modify the value data of the power system equipment; otherwise, a warning prompt is sent out.
Further ensuring the credibility of the authorized value order picture, and executing the following steps before storing the authorized value order picture as a credible value order picture in a value order library:
the method comprises the steps that firstly, difference area images are extracted from an operation fixed value single picture and an approval fixed value single picture, so that a plurality of pairs of difference area images are obtained;
secondly, carrying out character recognition on a plurality of pairs of difference area images, and extracting a plurality of pairs of difference constant value data;
thirdly, taking a plurality of pairs of difference constant value data as analysis objects, and performing multi-target fuzzy comprehensive analysis to obtain recommended constant value data;
step four, respectively calculating deviation indexes of the fixed value data of the transmitted check value single picture, the authorized fixed value single picture and the recommended fixed value data; if the deviation index corresponding to the authorized value order picture is smaller, importing the value data corresponding to the authorized value order picture into the power system equipment to modify the value data of the power system equipment; otherwise, a warning prompt is sent out.
In the first step, in implementation, it is necessary to divide the two aligned fixed-value single pictures into a plurality of picture areas in the same manner, for example, divide the picture areas in the form of pixel ranges. Then, by analyzing the similarity of each pair of picture areas one by one, a difference area between the picture files is extracted. Meanwhile, in the first step, a fixed value item corresponding to each difference area image is determined according to a fixed value item position matching file pre-configured by the fixed value single template; the method is convenient for the second step to be convenient for associating with the corresponding constant value item when the difference constant value data is extracted in the subsequent step; the use principle of the fixed value item position matching file is as follows: because the content format of the constant value single template is determined, after the constant value single template is converted into the picture file, the data of each constant value item is certainly presented in a certain pixel range of the picture file, and therefore, each image area is associated with the constant value item contained in each image area by calibrating the pixel range corresponding to each constant value item.
And the second step and the third step can also exchange and combine the constant value item data of two differences of the same constant value item between the picture files to form the difference result set. For example, the operation fixed value single picture and the approval fixed value single picture have three difference areas, and the data of the operation fixed value single picture in the difference areas are respectively: A. b and C, the data of the single picture of the approval value in the difference area are respectively as follows: D. e and F, then an additional 6 data combinations can be obtained by exchange combination of the constant value item data.
According to the invention, through expanding the difference data combination, more analysis objects can be provided for fuzzy comprehensive analysis, so that the influence of weight distribution in an analysis algorithm on an analysis result is reduced. Besides, the invention can adopt clustering analysis to obtain recommended value data besides fuzzy comprehensive analysis.
In the fourth step, in implementation, the deviation index is specifically related to the data of the constant value item and also related to the risk coefficient of the power system caused by the change of the numerical value of the constant value item, so that the risk coefficient corresponding to the constant value item is taken as the weight value and is incorporated into the calculation of the deviation index, and the influence on the credibility of the constant value data based on the consideration of safety can be realized.
And determining a constant value item corresponding to each difference area image according to a preset constant value item position matching file of the constant value single template.
And (5) carrying out image similarity analysis by adopting a histogram comparison method or a characteristic point matching algorithm.
And the fixed value data in the modified or replaced authorized fixed value single picture is matched with the fixed value data extracted from the equipment regulation single picture.
The system comprises a fixed value reading module, a fixed value checking module and a fixed value updating module, wherein the fixed value reading module is used for reading fixed value data of the power system equipment put into operation in the working process of checking and modifying the fixed value of the power system equipment;
the picture generation module is used for importing the read fixed value data into a fixed value list template to obtain an operation fixed value list, and converting the operation fixed value list into a picture format to obtain an operation fixed value list picture;
the picture acquisition module is used for acquiring the approval value sheet picture and the authorization value sheet picture;
the identification comparison module is used for carrying out character identification on the operation fixed value single picture, the approval fixed value single picture and the authorization fixed value single picture and extracting corresponding fixed value data; comparing whether the operation fixed value single picture is consistent with the fixed value data extracted by the check value single picture and the authorization fixed value single picture respectively, and obtaining a corresponding comparison result;
the image similarity analysis module is used for carrying out image similarity analysis on the operation fixed value single picture and the authorized fixed value single picture when the comparison result is that the fixed value data extracted by the operation fixed value single picture, the authorized fixed value single picture are inconsistent, and obtaining a corresponding analysis result;
the fixed value writing module is used for importing fixed value data corresponding to the authorized fixed value single picture into the power system equipment when the analysis result is that the preset condition is met, so as to modify the fixed value data of the power system equipment;
the warning module is used for sending out a warning prompt when the analysis result is that the preset condition is not met; and, further comprising:
the image difference region extraction module is used for extracting difference region images of the operation fixed value single picture and the approval fixed value single picture to obtain a plurality of pairs of difference region images;
the fuzzy analysis module is used for taking a plurality of pairs of difference constant value data as an analysis object to perform multi-target fuzzy comprehensive analysis to obtain recommended constant value data; the recognition comparison module is used for carrying out character recognition on the plurality of pairs of difference area images to extract a plurality of pairs of difference constant value data;
the deviation index calculation module is used for calculating deviation indexes of the fixed value data of the transmitted check value single picture, the authorized fixed value single picture and the recommended fixed value data respectively; comparing the deviation index of the check value sending single picture with the deviation index of the authorization value sending single picture, and obtaining a corresponding comparison result;
the fixed value writing module is used for importing fixed value data corresponding to the authorized fixed value single picture into the power system equipment to modify the fixed value data of the power system equipment when the comparison result shows that the deviation index of the authorized fixed value single picture is smaller;
the warning module is used for sending out a warning prompt when the analysis result is that the deviation index of the authorized fixed value single picture is large;
the image difference region extraction module is further used for determining a constant value item corresponding to each difference region image according to a preset constant value item position matching file of the constant value single template;
the system disclosed by the invention can be realized in other modes. For example, the modules may be divided into only one logic function, and there may be other manners of dividing the modules when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted or not performed. In addition, the communication connection between modules may be an indirect coupling or communication connection via some interfaces, devices or units, and may be in electrical or other forms.
In addition, each functional module in the embodiments of the present invention may be integrated in one processing unit, or each module may exist alone physically, or two or more modules may be integrated in one processing unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (6)
1. The method for checking and modifying the fixed value of the secondary equipment of the power system is characterized by comprising the following steps:
s1: reading fixed value data and equipment data of the power system equipment put into operation;
s2: importing the read fixed value data into a fixed value list template to obtain an operation fixed value list; converting the operation fixed value list into a picture format to obtain an operation fixed value list picture;
s3: importing the read equipment data into an equipment template to obtain an equipment regulation list, and converting the regulation list into a picture format to obtain an equipment regulation list picture;
s4: acquiring an approval value sheet picture and an authorization value sheet picture;
s5: performing character recognition on the operation fixed value single picture, the transmission check value single picture, the authorization fixed value single picture and the equipment adjustment single picture, extracting corresponding fixed value data, checking the fixed value data extracted by the authorization fixed value single picture and the equipment adjustment single picture, and if the condition is met, writing the fixed value data corresponding to the authorization fixed value single picture into the power system equipment to modify the fixed value data of the power system equipment; if the operation fixed value single picture is inconsistent with the approval fixed value single picture and the fixed value data extracted by the authorization fixed value single picture, continuing to execute the step S6;
s6: performing image similarity analysis on the check value sending single picture and the authorization value sending single picture; if the preset condition is met, writing the fixed value data corresponding to the authorized fixed value single picture into the power system equipment to modify the fixed value data of the power system equipment; otherwise, a warning prompt is sent out.
2. The method for checking and modifying the fixed value of the secondary equipment of the power system according to claim 1, wherein the method comprises the following steps: in the step S5, if the fixed value data of the authorized fixed value single picture is not within the range of the fixed value data extracted by the device adjustment single picture, the authorized fixed value single picture is modified or replaced.
3. The method for checking and modifying the fixed value of the secondary equipment of the power system according to claim 1, wherein the method comprises the following steps: in the step S5, before writing the fixed value data corresponding to the authorized fixed value single picture into the power system device, performing differential area image extraction on the operation fixed value single picture and the approval fixed value single picture to obtain a plurality of pairs of differential area images;
performing character recognition on the plurality of pairs of difference area images, and extracting a plurality of pairs of difference constant value data;
taking a plurality of pairs of difference constant value data as analysis objects, and performing multi-target fuzzy comprehensive analysis to obtain recommended constant value data; calculating deviation indexes of the fixed value data of the transmitted check value single picture and the authorized fixed value single picture and the recommended fixed value data respectively; if the deviation index corresponding to the authorized value order picture is smaller, importing the value data corresponding to the authorized value order picture into the power system equipment to modify the value data of the power system equipment; otherwise, a warning prompt is sent out.
4. A method for checking and modifying the value of secondary equipment of an electric power system according to claim 3, characterized in that: and determining a constant value item corresponding to each difference area image according to a preset constant value item position matching file of the constant value single template.
5. The method for checking and modifying the fixed value of the secondary equipment of the power system according to claim 1, wherein the method comprises the following steps: and (5) carrying out image similarity analysis by adopting a histogram comparison method or a characteristic point matching algorithm.
6. The method for checking and modifying the fixed value of the secondary equipment of the power system according to claim 2, wherein the method comprises the following steps: and the fixed value data in the modified or replaced authorized fixed value single picture is matched with the fixed value data extracted from the equipment regulation single picture.
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| CN202311615719.1A CN117688618A (en) | 2023-11-30 | 2023-11-30 | Fixed value checking and modifying method for secondary equipment of power system |
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