CN112860957A - Method, medium and system for checking fixed value list - Google Patents
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Abstract
The invention discloses a method, a medium and a system for checking a fixed value list. The method comprises the following steps: acquiring an image of a first constant value list of the relay protection device; identifying the constant value content of the image record of the first constant value list by adopting an optical character recognition technology, wherein the constant value content comprises the following steps: a first setting character string and a first setting value; reading a second constant value list of the relay protection device, and acquiring a second constant value character string and a second setting value from the second constant value list; determining a first constant value character string matched with a second constant value character string; if the second setting value after the matched second constant value character string is also matched with the first setting value after the first constant value character string, intercepting a third constant value character string from the matched first constant value character string from back to front; checking the matched third constant value character string and the first setting value as a correct constant value character string and setting value; and repeating the steps of traversing, intercepting and checking until the content of the fixed value is checked. The invention can automatically compare whether the identified fixed value list is accurate or not.
Description
Technical Field
The invention relates to the technical field of relay protection devices, in particular to a method, medium and system for checking a fixed value list.
Background
The relay protection device is one of the most important secondary devices of the power system, and is a guarantee for the safe operation of the power system, along with the rapid development of the power grid, the number of relay protection devices is increasing, the types and versions are various, and the logic and the format are various.
Disclosure of Invention
The embodiment of the invention provides a method, medium and system for checking a constant value list, and aims to solve the problems that in the prior art, modification and checking of the constant value list of a relay protection device require more manpower, the working efficiency is low and the error rate is high.
In a first aspect, a method for checking a fixed value list is provided, including: acquiring an image of a first constant value list of the relay protection device; identifying the constant value content of the image record of the first constant value list by adopting an optical character recognition technology, wherein the constant value content comprises the following steps: a plurality of first setting character strings and a plurality of first setting values; reading a second constant value list of the relay protection device, and obtaining a plurality of second constant value character strings and a plurality of second setting values from the second constant value list, wherein each second setting value is arranged behind each second constant value character string; for each second constant value character string, traversing all the first constant value character strings, and determining the first constant value character string matched with the second constant value character string; if the second setting value after the matched second constant value character string is also matched with the first setting value after the first constant value character string, intercepting a third constant value character string from the matched first constant value character string from back to front; checking the matched third fixed value character string and the first setting value as a correct fixed value character string and setting value, and deleting the matched first fixed value character string and the first setting value from the fixed value content; repeating the steps of traversing, intercepting and checking until the definite value content is checked.
In a second aspect, a computer-readable storage medium having computer program instructions stored thereon is provided; the computer program instructions, when executed by a processor, implement a method for checking a flawed bill as described in the embodiments of the first aspect above.
In a third aspect, a system for checking a fixed value list is provided, including: a computer readable storage medium as described in the second aspect of the embodiments above.
Therefore, in the embodiment of the invention, the fixed value obtained by scanning is automatically identified based on the optical character automatic identification technology and is compared with the standard fixed value item, so that the automatic checking of the protection fixed value is realized, the checking time of the protection fixed value is shortened, and the accuracy of the fixed value checking is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a flow chart of a method of checking a constant value sheet according to an embodiment of the present invention;
FIG. 2 is a schematic image of a first coupon in accordance with an embodiment of the present invention;
FIG. 3 is a diagram illustrating an optical character recognition technique according to an embodiment of the present invention identifying a constant value content of an image record of a first constant value sheet;
fig. 4 is a schematic diagram of a process of matching a first constant value string and a second constant value string according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a method for checking a fixed value list. As shown in fig. 1, the checking step includes:
step S1: and acquiring an image of the first fixed value list of the relay protection device.
The first constant sheet is typically a table. This step can be obtained by photographing or scanning. The image of the first fix sheet is shown in fig. 2. The first customized single image can be subjected to graying and binarization processing in advance by adopting the prior art, the identification rate is improved by inclination detection and correction, horizontal lines and vertical lines of fixed-value single tables are identified, the top point of each unit table is determined according to the intersection point of the horizontal lines and the vertical lines, and the characters of the unit table are cut according to the top point coordinates, so that the table data segmentation graph is realized, and the image is clearer.
Step S2: and identifying the constant value content of the image record of the first constant value sheet by adopting an optical character recognition technology.
Wherein, the constant value content comprises: a plurality of first setting character strings and a plurality of first setting values. The table is recognized through an optical character recognition technology (OCR), and a plurality of first fixed value character strings are recognized according to the division of the table and sorted according to the division arrangement order of the table, as shown in fig. 3. The first fixed-value string includes: characters and spaces. The first setting value includes: a value, such as "1", or, the first setting value includes: numerical values and symbols (it being understood that symbols of embodiments of the present invention include letters), such as "1A", "1 °". Each first fixed value string may be followed by a first fixed value, or may be followed by other first fixed value strings. Two adjacent first definite value character strings are separated by a space. It should be understood that the first fixed value string is a fixed value name under the class of the equipment parameter fixed value and the protection fixed value as shown in fig. 2. The first setting value is a setting value under the fixed value of the equipment parameter and the protection fixed value gate.
In addition, after identifying the constant value content, the constant value content may be preprocessed, specifically, the numbers in the first constant value character string are converted into characters. For example, the "CT 2 rating" is converted to a "CT quadratic rating".
Step S3: and reading a second constant value list of the relay protection device, and obtaining a plurality of second constant value character strings and a plurality of second setting values from the second constant value list.
This step may be read by the management software for the second fix ticket. The second constant value sheet is a standard constant value sheet. Wherein each second setting value is followed by each second fixed value string. It should be understood that the second constant value string is a constant value name under the class of the device parameter constant value, protection constant value, as shown in fig. 2. The second fixed-value string includes: characters and spaces. The second setting value is a setting value under the equipment parameter fixed value and the protection fixed value gate class. The second setting value includes: a value, such as "1", or the second setting value includes: numerical values and symbols, such as "1A", "1 °".
Step S4: and traversing all the first constant value character strings for each second constant value character string, and determining the first constant value character string matched with the second constant value character string.
Specifically, the steps include the following processes:
1. and comparing the first characters of the first fixed value character string and the second fixed value character string.
As shown in fig. 4(a), 1 is the number of the following first fixed value character string and first fixed value in the first fixed value list table. The first setting character string is 'current break variable electrical value current break variable current', the first setting value is 0.5A, and 0.5A is connected behind the current break variable current. The second constant value string is a current with a sudden change amount. When comparing, the first characters of 'current break constant value current break current' and 'current break current' are compared.
2. And if the first characters of the first fixed value character string and the second fixed value character string are not matched, comparing the first characters of the second fixed value character string with the next characters of the first fixed value character string.
For example, if the first string "current burst" is the first fixed string "current burst" and the second string "current burst" is the second fixed string "current burst", the first character of the two strings does not match, and the "current" of the first string "current burst" and the "burst" of the second string "current burst" are compared.
3. And the rest is done until a certain character of the first fixed value character string is matched with the first character of the second fixed value character string.
For example, if the first string "current burst" is the first fixed string "current burst" and the second string "current burst" is the second fixed string "current burst", the first character of the two strings is not matched, and the "current" of the first fixed string "current burst" and the "burst" of the second fixed string "current burst" are compared, and the two strings are different; the first constant string "current sudden change" and the second constant string "sudden change" are compared and the two are the same.
4. And comparing the character behind the first character of the second constant value character string with the character behind a certain character of the first constant value character string until all the characters of the second constant value character string are matched with all the characters behind the certain character of the first constant value character string, and determining that the first constant value character string is matched with the second constant value character string.
Specifically, the steps include the following processes:
(1) and if the current character of the first constant value character string is not matched with the current character of the second constant value character string, counting the common element length of the previous character of the current character of the second constant value character string.
The method for calculating the common element length of the characters comprises the following steps: sequentially intercepting all characters from a first character of a second character string to a previous character of the character according to a sequence from front to back, and adding one character backwards every time of intercepting to obtain a group of prefix character strings; sequentially intercepting all characters from a second bit character of the second character string to the character from back to front, and adding one character forward every time of intercepting to obtain a group of suffix character strings; and matching the group of prefix character strings and the group of suffix character strings one by one, and counting the number of matching as the length of the common elements of the characters.
For example, take "sudden current change amount" as an example:
the prefix and suffix strings of the first character "electricity" are both empty sets, having a common element length of 0.
The prefix string of the second character "stream" comprises [ electronic ], and the suffix string comprises [ stream ], with a common element length of 0.
The prefix string of the third character "burst" includes [ power, current ], and the suffix string includes [ power, current, burst ], with a common element length of 0.
The prefix string of the fourth character "variant" includes [ electric, current abrupt ], and the suffix string includes [ current abrupt, variant ], with a common element length of 0.
The prefix string of the fifth character "amount" includes [ electricity, current burst, current jump ], and the suffix string includes [ current jump amount, variable, amount ], and the common element length is 0.
The prefix string of the sixth character "electricity" includes [ electricity, current burst, current jump ], and the suffix string includes [ current jump electric, variable electric, quantity electric, and electricity ], and the common element length is 1.
The prefix string of the seventh character "stream" includes [ electricity, current bump variable electricity ], and the suffix string includes [ current bump current, variable current, quantity current, stream ], with a common element length of 1.
For example, when the first fixed string "current sudden change amount current" is compared with the second fixed string "current sudden change amount current", the first five characters are the same, and the sixth characters "value" and "flow" are different. The first character of the sixth character "stream" is "electric", with a common element length of 1.
By adopting the mode of sharing element length, compared positions can not be repeated, and the matching efficiency is improved.
(2) And determining the comparison sequence number of the second constant value character string as the length of the common element plus one.
For example, the aforementioned common element length is 1 plus one, and the alignment number of the second constant value character string is 2.
(3) And aligning the current character of the first constant value character string with the character of the comparison serial number of the second constant value character string, and sequentially comparing the current character and the following character of the first constant value character string with the character and the following character of the comparison serial number of the second constant value character string one by one.
For example, as shown in fig. 4(b), when the character of the alignment number 2 of the second fixed character string "current sudden change amount current" is "stream", the "value" of the first fixed character string "current sudden change amount current" is aligned with the "stream" of the second fixed character string, and the subsequent characters are sequentially aligned.
(4) And repeating the steps until all characters of the second constant value character string are matched with all characters behind a certain character of the first constant value character string.
For example, as shown in fig. 4(c), all characters of the second fixed-value string match with all characters following the "change" character of the first fixed-value string.
Step S5: and if the second setting value after the matched second constant value character string is also matched with the first setting value after the first constant value character string, intercepting a third constant value character string from the matched first constant value character string from back to front.
Specifically, in the process of intercepting from back to front, if the character is a blank, the interception is stopped, and the first fixed value character string after the blank is determined as the third fixed value character string.
For example, if the first fixed value string "current break variable current break current" matches the second fixed value string "current break current", the first setting value "0.5A" after the first fixed value string and the second setting value after the second fixed value string are matched. And if the second setting value subsequent to the second constant value character string is also 0.5A, matching. The first fixed value character string 'current sudden change electric value current sudden change amount current' is intercepted from back to front, when the character before 'current sudden change amount current' is intercepted, the character is a blank, so the interception is stopped, and the third fixed value character string is 'current sudden change amount current'.
Step S6: and checking the matched third fixed value character string and the first setting value as a correct fixed value character string and setting value, and deleting the matched first fixed value character string and the first setting value from the fixed value content.
For example, "current sudden change amount current" + "0.5A" is checked as a correct set value string and a set value. And "current break variable electrical value current break variable" + "0.5A" was deleted.
Step S7: and repeating the steps of traversing, intercepting and checking until the content of the fixed value is checked.
Preferably, after step S7, the method according to the embodiment of the present invention further includes:
(1) and marking the first setting value character string and the first setting value which are checked to be incorrect.
(2) And correcting the incorrect first setting value character string and the first setting value.
Specifically, the correction may be performed manually. In addition, the image of the first constant value sheet can be marked, and the image of the first constant value sheet can be marked by incorrect yellow and can be marked by correct green.
The embodiment of the invention also discloses a computer readable storage medium. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement the method for checking a fixed value list as described in the previous embodiments.
The embodiment of the invention also discloses a checking system of the fixed value list. The system comprises: the computer readable storage medium as described in the previous embodiments.
In summary, the embodiment of the present invention automatically identifies the constant value obtained by scanning based on the optical character automatic identification technology, and compares the constant value with the standard constant value item, thereby realizing automatic checking of the protection constant value, shortening the time for checking the protection constant value, and ensuring the accuracy of the constant value checking.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method for checking a fixed value list is characterized by comprising the following steps:
acquiring an image of a first constant value list of the relay protection device;
identifying the constant value content of the image record of the first constant value list by adopting an optical character recognition technology, wherein the constant value content comprises the following steps: a plurality of first setting character strings and a plurality of first setting values;
reading a second constant value list of the relay protection device, and obtaining a plurality of second constant value character strings and a plurality of second setting values from the second constant value list, wherein each second setting value is arranged behind each second constant value character string;
for each second constant value character string, traversing all the first constant value character strings, and determining the first constant value character string matched with the second constant value character string;
if the second setting value after the matched second constant value character string is also matched with the first setting value after the first constant value character string, intercepting a third constant value character string from the matched first constant value character string from back to front;
checking the matched third fixed value character string and the first setting value as a correct fixed value character string and setting value, and deleting the matched first fixed value character string and the first setting value from the fixed value content;
repeating the steps of traversing, intercepting and checking until the definite value content is checked.
2. The method for matching a fixed value list according to claim 1, wherein said step of determining said first fixed value string matching said second fixed value string comprises:
comparing first characters of the first fixed value character string and the second fixed value character string;
if the first characters of the first constant value character string and the second constant value character string are not matched, comparing the first characters of the second constant value character string with the next characters of the first constant value character string;
repeating the steps until a certain character of the first constant value character string is matched with the first character of the second constant value character string;
and comparing the character behind the first character of the second constant value character string with the character behind a certain character of the first constant value character string until all the characters of the second constant value character string are matched with all the characters behind the certain character of the first constant value character string, and determining that the first constant value character string is matched with the second constant value character string.
3. The method of checking a constant value sheet according to claim 2, wherein said step of sequentially comparing a character following a top character of said second constant value character string with a character following a certain character of said first constant value character string comprises:
if the current character of the first constant value character string is not matched with the current character of the second constant value character string, counting the common element length of the previous character of the current character of the second constant value character string;
determining the comparison sequence number of the second constant value character string as the length of the common element plus one;
aligning the current character of the first definite value character string with the character of the comparison serial number of the second definite value character string, and sequentially comparing the current character and the following character of the first definite value character string with the character and the following character of the comparison serial number of the second definite value character string one by one;
and repeating the steps until all characters of the second constant value character string are matched with all characters behind a certain character of the first constant value character string.
4. The method for matching a fixed value list according to claim 1, wherein said step of intercepting a third fixed value string from said first fixed value string from back to front comprises:
in the process of intercepting from back to front, if the character is a blank, stopping intercepting, and determining the first fixed value character string after the blank as the third fixed value character string.
5. A method for checking a valuated ticket according to claim 1, wherein said method further comprises, after said step of checking said valuated content, the steps of:
marking the first setting value character string and the first setting value which are checked to be incorrect;
correcting the incorrect first setting value character string and the first setting value.
6. The method for matching a fixed value list according to claim 1, wherein said step of determining said first fixed value string matching said second fixed value string is preceded by the step of:
and converting the numbers in the first constant value character string into characters.
7. The method for matching a fixed value list according to claim 1, wherein each of the first fixed value string and the second fixed value string includes: characters and spaces.
8. The method for checking a fixed value list according to claim 1, wherein each of the first and second setting values comprises: a numerical value; or, the first setting value and the second setting value both include: numerical values and symbols.
9. A computer-readable storage medium characterized by: the computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement a method of checking a flawed bill as claimed in any one of claims 1 to 8.
10. A system for checking a fixed value list, comprising: the computer-readable storage medium of claim 9.
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| CN113608480A (en) * | 2021-08-11 | 2021-11-05 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Fixed value checking method of extra-high voltage direct current protection device |
| CN113849708A (en) * | 2021-09-18 | 2021-12-28 | 山东送变电工程有限公司 | Matching method and device for fixed value items |
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