CN113515933A - Power primary and secondary equipment fusion processing method, system, equipment and storage medium - Google Patents
Power primary and secondary equipment fusion processing method, system, equipment and storage medium Download PDFInfo
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Abstract
The invention discloses a fusion processing method, a fusion processing system, a fusion processing device and a fusion processing storage medium for electric power secondary equipment, which are used for carrying out standard preprocessing on an obtained monitoring signal of the electric power secondary equipment; performing word segmentation on the power secondary equipment monitoring signals subjected to the standard pretreatment to obtain word frequency and word segmentation results of each power secondary equipment monitoring signal, wherein the word segmentation results comprise word segmentation signals and relay protection signals; acquiring the corresponding relation between the primary power equipment and the secondary power equipment according to the word segmentation signals; calculating an edit distance value between the relay protection signal and a standard protection signal by using an edit distance algorithm according to the word frequency; and matching the relay protection signal with the minimum edited distance value with the standard protection signal, and obtaining the matching relation among the primary power equipment, the secondary power equipment and the monitoring signal according to the corresponding relation between the primary power equipment and the secondary power equipment, so as to perform fusion processing on the primary power equipment and the secondary power equipment.
Description
Technical Field
The invention relates to the technical field of signal processing, in particular to a method, a system, equipment and a storage medium for fusion processing of electric power primary and secondary equipment based on edit distance.
Background
At present, the application and the status of the power secondary equipment are more and more important as the foundation for constructing various power automatic systems. Because the primary power equipment and the secondary power equipment are in a one-to-many relationship, namely one set of primary power equipment is provided with a plurality of sets of secondary power equipment, and meanwhile, each regional power grid adopts different manufacturers and different types of secondary power equipment, and the regulation and control signal formats and naming modes generated by the various secondary power equipment are various and huge in number, the operation monitoring signal data of the electrical equipment has the characteristics of high quantization, diversification and complexity. This poses great difficulties to the integration of various signal-based power system applications and information systems, including actual requirements for power grid state estimation, scenario decision, simulation training, and the like.
Among them, electrical equipment directly used for the production and use of electric energy, which has a voltage higher than that of a control circuit (secondary equipment), is called primary power equipment, and mainly includes a generator, a motor, a transformer, a circuit breaker, a disconnecting switch, an automatic switch, a contactor, a knife switch, a bus, a power transmission line, a power cable, a reactor, and the like. Mechanical parts and auxiliary devices thereof with behavior capability for monitoring, measuring, controlling, adjusting and assisting electric primary equipment are called electric secondary equipment, and mainly comprise relay protection and automatic devices, remote measurement monitoring devices such as RTU (remote measurement and control terminal) and direct-current power supply equipment.
When the power grid fails, the protection equipment can be started quickly, and the regulation and control signal is transmitted to the dispatching desk. And the dispatcher judges the nature of the fault through observing the regulating signal. In the current-stage analog simulation system, after a fault occurs, the reported signal is often a built-in regulation signal of the simulation system, and the difference from a field signal is very large, so that the fault situation cannot be really restored.
The prior art is as follows: all equipment, faults and monitoring signals in the existing power grid dispatching system as a model are subjected to data processing to form fault data units and monitoring signal data units which are in one-to-one correspondence with the faults and the monitoring signals. And then counting, sorting and classifying the fault data unit and the monitoring data unit to respectively form fault data, a resource library and unlabeled monitoring signal data resources. Screening and checking the preliminary corresponding relation from the fault data unit to the monitoring signal data unit, carrying out manual intervention and correction on the condition that the actual corresponding relation between the fault data unit and the monitoring signal is inconsistent in fuzzy matching, enabling the corresponding relation from all the fault data units to all the monitoring signal data units to accord with the actual condition, recording equipment information, fault information and fault content information in the fault data unit corresponding to the monitoring signal data unit in a trigger label in each monitoring signal data unit, punching each monitoring signal data unit of the trigger label to form a labeled monitoring signal data resource library, and loading the labeled monitoring signal data resource library into a computer program of the power dispatching simulation training system to complete modeling.
In the prior art, a one-to-one correspondence relationship between faults and monitoring signals is formed by processing a whole network model, and a fuzzy matching and manual intervention mode is adopted in the matching of a fault data unit and a monitoring signal data unit. Along with the construction of a cloud platform, a cloud center is responsible for collecting and processing the data of the whole network model, the method can encounter a bottleneck when processing a large amount of data, the same monitoring signal is named differently in each region, and the workload of manual intervention can be greatly increased. While for the same fault this prior art does not consider that the fault is in a one-to-many relationship with the supervisory signal within the multilevel grid.
Disclosure of Invention
The invention provides a method, a system, equipment and a storage medium for fusion processing of primary and secondary electric power equipment aiming at monitoring signals collected by data cleaning and a multi-stage power grid, and the method, the system, the equipment and the storage medium take multiple corresponding relations between primary equipment and secondary equipment in the fusion of the primary and secondary equipment into consideration, so that the problems of low accuracy and excessive manual intervention in the matching process of the monitoring signals are solved, and the problem of difficult fusion of the next secondary equipment with a large number of monitoring signals is also solved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the power primary and secondary equipment fusion processing method comprises the following steps:
carrying out standard pretreatment on the acquired monitoring signals of the power secondary equipment;
performing word segmentation on the power secondary equipment monitoring signals subjected to the standard pretreatment to obtain word frequency and word segmentation results of each power secondary equipment monitoring signal, wherein the word segmentation results comprise word segmentation signals and relay protection signals;
acquiring the corresponding relation between the primary power equipment and the secondary power equipment according to the word segmentation signals; calculating an edit distance value between the relay protection signal and a standard protection signal by using an edit distance algorithm according to the word frequency;
and matching the relay protection signal with the minimum edited distance value with the standard protection signal, and obtaining the matching relation among the primary power equipment, the secondary power equipment and the monitoring signal according to the corresponding relation between the primary power equipment and the secondary power equipment.
Further, the performing of the specification preprocessing on the acquired monitoring signal of the power secondary device includes:
irregular phase names in the monitoring signals of the power secondary equipment are unified into regular phase names; uniformly naming irregular protection intervals in the monitoring signals of the secondary power equipment as regular protection intervals; the irregular line names in the monitoring signals of the power secondary equipment are unified into regular line names; unifying irregular protection time limit naming in the power secondary equipment monitoring signals into regular protection time limit naming; and uniformly naming the irregular protective sleeve number in the monitoring signal of the power secondary equipment as a regular protective sleeve number.
Further, the word segmentation is performed on the electric power secondary device monitoring signals after the standard preprocessing, so as to obtain a word frequency and a word segmentation result of each electric power secondary device monitoring signal, which specifically includes:
the method comprises the steps of segmenting words of the monitoring signals of the power secondary equipment through a word segmentation dictionary special for the power field, and counting word frequency of each word and word segmentation results of each monitoring signal of the power secondary equipment.
Further, the obtaining of the correspondence between the primary power equipment and the secondary power equipment according to the word segmentation signal specifically includes:
and extracting the name of the primary power equipment, the name of the secondary power equipment and the set number of the secondary power equipment from the word segmentation signal, and obtaining the corresponding relation between the primary power equipment and the secondary power equipment according to the name of the primary power equipment, the name of the secondary power equipment and the set number of the secondary power equipment.
Further, the formula for calculating the edit distance value between the relay protection signal and the standard protection signal by using the edit distance algorithm is as follows:
wherein the content of the first and second substances,nthe length of the character string representing the relay protection signal,mthe length of the character string representing the standard guard signal,ed[i,j]indicating in the relay protection signaliCharacter and standardIn the protection signaljThe value of the edit distance between the individual characters,ithe second in the character string representing the relay protection signaliThe position of each of the plurality of positions,jthe second of which represents a string of standard protection signalsjThe position of each of the plurality of positions,f i is shown asiThe word frequency of the individual characters,
，krepresenting a correction coefficient, the value of which is less than 0.
Electric power primary and secondary equipment fuses processing system includes: the system comprises a standard preprocessing module, a word segmentation and word frequency statistics module, a corresponding relation acquisition module, an edit distance calculation module and a matching module; wherein:
a standard preprocessing module: the system is used for carrying out standard preprocessing on the acquired monitoring signals of the electric power secondary equipment;
word segmentation and word frequency statistics module: the system comprises a word segmentation unit, a word frequency acquisition unit, a word segmentation unit and a relay protection unit, wherein the word segmentation unit is used for performing word segmentation on the electric power secondary equipment monitoring signals subjected to standard preprocessing to obtain a word frequency and a word segmentation result of each electric power secondary equipment monitoring signal;
a correspondence obtaining module: the system comprises a word segmentation unit, a power primary device and a power secondary device, wherein the word segmentation unit is used for obtaining a word segmentation signal;
an edit distance calculation module: the device is used for calculating an edit distance value between the relay protection signal and a standard protection signal by using an edit distance algorithm according to the word frequency;
a matching module: and the system is used for matching the relay protection signal with the standard protection signal when the edit distance value is minimum, obtaining the matching relation among the primary power equipment, the secondary power equipment and the monitoring signal according to the corresponding relation between the primary power equipment and the secondary power equipment, and performing fusion processing on the primary power equipment and the secondary power equipment.
Further, the specification preprocessing module comprises a phase processing module, a segment processing module, a line processing module, a time limit processing module and a set processing module, wherein:
a phase processing module: the system is used for unifying irregular phase names in the monitoring signals of the power secondary equipment into regular phase names;
a segment processing module: the protection interval naming method comprises the following steps of uniformly naming irregular protection intervals in monitoring signals of the electric power secondary equipment as regular protection intervals;
a line processing module: the system is used for unifying irregular line names in the monitoring signals of the power secondary equipment into regular line names;
a time limit processing module: the protection time limit naming system is used for unifying irregular protection time limit naming in the power secondary equipment monitoring signals into regular protection time limit naming;
a sleeve processing module: the method is used for unifying irregular protection sleeve number naming in the power secondary equipment monitoring signals into regular protection sleeve number naming.
Further, a formula for calculating the edit distance value between the relay protection signal and the standard protection signal by using an edit distance algorithm in the edit distance calculation module is as follows:
wherein the content of the first and second substances,nthe length of the character string representing the relay protection signal,mthe length of the character string representing the standard guard signal,ed[i,j]indicating in the relay protection signaliCharacter and standard guard signaljThe value of the edit distance between the individual characters,ithe second in the character string representing the relay protection signaliThe position of each of the plurality of positions,jthe second of which represents a string of standard protection signalsjThe position of each of the plurality of positions,f i is shown asiThe word frequency of the individual characters,
，krepresenting a correction coefficient, the value of which is less than 0.
A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the power primary and secondary device fusion processing method when executing the computer program.
A computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the power primary and secondary device fusion processing method.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the method, standardized preprocessing is carried out on massive monitoring signals of the power secondary equipment, word segmentation and word frequency statistics are carried out, word segmentation signals and relay protection signals of each monitoring signal of the power secondary equipment are obtained, and the corresponding relation between the power primary equipment and the power secondary equipment is obtained according to the word segmentation signals; the method comprises the steps of calculating an edit distance value between a relay protection signal and a standard protection signal corresponding to a monitoring signal of the electric power secondary equipment by using an edit distance algorithm based on word frequency, matching the relay protection signal with the standard protection signal when the edit distance value is minimum according to the principle that the edit distance value is smaller and the similarity is higher, obtaining the matching relation among the electric power primary equipment, the electric power secondary equipment and the monitoring signal according to the corresponding relation between the electric power primary equipment and the electric power secondary equipment, and using the matching relation to be used for fusion processing of the electric power primary equipment and the electric power secondary equipment.
The invention provides a method for processing monitoring signals by using a special word segmentation dictionary in the electric power field, which solves the problem of high word segmentation error rate of common word segmentation software; the invention provides an editing distance algorithm by using word frequency, which improves the matching precision of a relay protection signal and a standard protection signal.
The popularization of the invention can effectively solve the problem that various monitoring signal formats and naming modes generated by various power secondary devices are various and huge in quantity due to the fact that power grids of different manufacturers and different types are adopted by the power secondary devices in various regions, thereby causing the difficulty of power system application and information system integration based on the monitoring signals, providing technical support for realizing multi-stage power grid information fusion and developing cross-region application, laying an important foundation for ensuring safe and stable operation of the power grids and developing shared economy and digital economy, and having obvious economic and social benefits.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a flow chart of a fusion processing method of primary and secondary power equipment according to the present invention.
Fig. 2 is a structural diagram of a power primary and secondary device fusion processing system according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
In order to make the technical solutions of the present invention better understood, 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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention provides a primary and secondary equipment fusion processing method based on an editing distance, which comprises the steps of firstly, carrying out standard pretreatment on all acquired monitoring signals of secondary electric power equipment; then performing word segmentation on all the power secondary equipment monitoring signals subjected to standard preprocessing to obtain word frequency and word segmentation results of each power secondary equipment monitoring signal, wherein the word segmentation results comprise word segmentation signals and relay protection signals; acquiring a corresponding relation between the primary power equipment and the secondary power equipment according to the word segmentation signals; according to the word frequency, calculating an edit distance value between a relay protection signal and a standard protection signal corresponding to the monitoring signal of the electric power secondary equipment by using an edit distance algorithm; and matching the relay protection signal with the minimum edited distance value with the standard protection signal, and obtaining the matching relation among the primary power equipment, the secondary power equipment and the monitoring signal according to the corresponding relation between the primary power equipment and the secondary power equipment with the corresponding number, so as to perform fusion processing on the primary power equipment and the secondary power equipment.
Where edit distance is the minimum cost required to convert between two strings, i.e., how many times at least processing is required to change one string to another. Possible operations for the conversion are insertion, deletion, replacement. The larger the edit distance of two character strings, the larger the difference, i.e., the more dissimilar, and the smaller the edit distance of two character strings, the smaller the difference, i.e., the more similar.
Referring to fig. 1, the method of the present invention specifically comprises the following steps:
(1) acquiring all the monitoring signals of the secondary power equipment, and performing standard pretreatment on all the monitoring signals of the secondary power equipment;
specifically, taking a provincial level regulation center as an example, the monitoring signal quantity of the electric power secondary equipment is huge and reaches the million level, the monitoring signal quantity is collected in a relational database through a message bus, and when the monitoring signal quantity is used, all the monitoring signals of the electric power secondary equipment are obtained from the relational database.
Because the expression methods of the regions in the operation and maintenance monitoring signal process are different, the problems of non-standard coding and naming can occur, and the data influencing the calculation value of the subsequent step needs to be subjected to standard preprocessing, wherein the standard preprocessing comprises the following steps: 1) phase treatments, including ABC trisubes, such as: uniformly processing the 'a phase', '1 phase' and 'alpha phase' into 'A phase'; 2) segment treatments, including segment I, segment II, segment III, segment IV, segment V, etc., such as: uniformly processing the sections III, three, 3, three, III and III for protection into sections III; 3) line processing, including way I, way II, way III, way IV, way V, etc., such as: the 'IV line', '4 line', 'four line' and 'four line' are processed into 'IV line' in a unified way; 4) time limit processing including 1 time limit, 2 time limit, 3 time limit, etc., such as: uniformly processing the 'II _2 outlet', 'II _2 action' and 'II 2 outlet' into 'II section 2 time limit'; 5) set treatments, including 1 st set, 2 nd set, 3 rd set, etc., such as: the 'A set', 'first set' and 'first set' are treated as '1 st set' together.
The phase processing, the segment processing, the line processing, the time limit processing and the set processing can be carried out simultaneously or sequentially, and the sequence is not limited.
(2) Performing word segmentation on all the power secondary equipment monitoring signals after standard preprocessing by using a word segmentation dictionary special for the power field to obtain word frequency and word segmentation results of each power secondary equipment monitoring signal;
specifically, the special word segmentation dictionary for the electric power field is introduced, all electric power secondary equipment monitoring signals after standard preprocessing are subjected to word segmentation, word frequency of each word is counted, and a word-frequency corresponding relation is formed.
WhereinW 1、W 2…W nThe word segmentation result obtained by the word segmentation is shown,N 1、N 2…N nindicating the number of times the word segmentation result occurs,f 1、f 2…f nindicates the word frequency of occurrence of the word segmentation result, and
。
(3) the word segmentation result of each power secondary equipment monitoring signal comprises a word segmentation signal and a relay protection signal, the name of the power primary equipment, the name of the power secondary equipment and the number of sets of power secondary equipment are extracted from the word segmentation signal, and the corresponding relation between the power primary equipment and the power secondary equipment is obtained according to the name of the power primary equipment, the name of the power secondary equipment and the number of sets of power secondary equipment;
specifically, the word segmentation result of each power secondary equipment monitoring signal comprises a word segmentation signal and a relay protection signal, the word segmentation signal comprises a region name, an operation and maintenance region name, a transformer substation name, a voltage level, a power primary equipment name, a power secondary equipment name and the number of sets of power secondary equipment, and the power primary equipment name, the power secondary equipment name and the number of sets of power secondary equipment are extracted from the word segmentation signal according to the naming rules of the power primary equipment and the power secondary equipment in each region, so that the corresponding relation between the power primary equipment and the corresponding sets of power secondary equipment is obtained. Because the corresponding relation between the primary power equipment and the secondary power equipment with the corresponding number is obtained from the monitoring signals, when the next matching is carried out, the information which belongs to redundant information, can slow down the cleaning speed and increase the wrong matching rate is removed, and only the relay protection signals are reserved.
(4) And calculating an edit distance value between a relay protection signal and a standard protection signal corresponding to the monitoring signal of the power secondary equipment by using an edit distance algorithm according to the word frequency.
The step (3) and the step (4) can be performed simultaneously or sequentially, and the sequence is not limited.
(5) And matching the relay protection signal with the minimum editing distance value with the standard protection signal to obtain the relay protection signal with the closest relation to the standard protection signal, obtaining the matching relation among the primary power equipment, the secondary power equipment and the monitoring signal, and obtaining the fusion processing result of the primary power equipment and the secondary power equipment according to the matching relation among the primary power equipment, the secondary power equipment and the monitoring signal.
Specifically, the similarity between the relay protection signal obtained in the step (3) and the standard protection signal is a key factor for determining the fusion accuracy of the primary power equipment and the secondary power equipment. The edit distance between character strings can be used for measuring the similarity between objects expressed in the form of character strings, the edit distance of the character strings is based on a series of edit operations including insertion, deletion and replacement, the edit distance between the character strings can be calculated by a dynamic programming method, and the edit distance between two character strings can be calculated for two character stringsxAndywhereinx=x 1……x n；y= x1……xm(ii) a Its edit distanceed(x,y) Using the following recursive formula, by calculating a value of [ ()n+1)*(m+1)]Two-dimensional editing matrix of individual elementsD(i,j) Thus obtaining the product.
WhereinC(S)Representing an execution operationSThe cost of (a) of (b),εa null character is represented by a null character,x→yit is shown that the replacement operation is performed,x→εit is indicated that the operation of deletion is performed,ε→yindicates an insert operation ifed(x,y) Less than or equal to a predefined error levelkThen two character strings are indicatedxAndyare matched.
Although the cost of the editing operation is 0,1]Non-negative real number in between, but in general, will operate at a costC(S)Only two values of 0 and 1 are taken. In the fusion of the primary power equipment and the secondary power equipment, since the characters in the relay protection information have certain characteristics, that is, the characters with the larger occurrence number represent that the characters are nouns or abbreviations of nouns in the monitoring signal, and the distance is reduced and cannot be replaced by 1, the edit distance algorithm can be modified as the following formula:
wherein the content of the first and second substances,nthe length of the character string representing the relay protection signal,mthe length of the character string representing the standard guard signal,ed[i,j]indicating in the relay protection signaliCharacter and standard guard signaljThe value of the edit distance between the individual characters,ithe second in the character string representing the relay protection signaliThe position of each of the plurality of positions,jthe second of which represents a string of standard protection signalsjThe position of each of the plurality of positions,f i is shown asiThe word frequency of the individual characters,
，krepresenting a correction coefficient, the value of which is less than 0.
And calculating the editing distance to obtain a relay protection signal closest to the standard protection signal. In the process of cleaning the multi-region monitoring signals, matching relations among the primary electric power equipment, the secondary electric power equipment and the monitoring signals can be formed according to the corresponding relation between the primary electric power equipment and the corresponding sets of secondary electric power equipment formed in the step (3), and fusion processing results of the primary electric power equipment and the secondary electric power equipment can be obtained according to the matching relations among the primary electric power equipment, the secondary electric power equipment and the monitoring signals.
Cleansing as used in this disclosure refers to finding and correcting identifiable errors in data while obtaining useful information in the data.
The invention also provides a power primary and secondary equipment fusion processing system, as shown in fig. 2, comprising
A standard preprocessing module: the system is used for carrying out standard preprocessing on all acquired monitoring signals of the power secondary equipment;
word segmentation and word frequency statistics module: the system comprises a word segmentation unit, a word frequency acquisition unit, a word segmentation unit and a relay protection unit, wherein the word segmentation unit is used for performing word segmentation on all power secondary equipment monitoring signals subjected to standard preprocessing to obtain a word frequency and a word segmentation result of each power secondary equipment monitoring signal, and the word segmentation result comprises a word segmentation signal and a relay protection signal;
a correspondence obtaining module: the system comprises a word segmentation unit, a power primary device and a power secondary device, wherein the word segmentation unit is used for obtaining a word segmentation signal;
an edit distance calculation module: the device is used for calculating an edit distance value between the relay protection signal and a standard protection signal by using an edit distance algorithm according to the word frequency;
a matching module: and the system is used for matching the relay protection signal with the standard protection signal when the edit distance value is minimum, obtaining the matching relation among the primary power equipment, the secondary power equipment and the monitoring signal according to the corresponding relation between the primary power equipment and the secondary power equipment, and performing fusion processing on the primary power equipment and the secondary power equipment.
The standard preprocessing module comprises a phase processing module, a section processing module, a line processing module, a time limit processing module and a set processing module, wherein:
a phase processing module: the system is used for unifying irregular phase names in all the monitoring signals of the power secondary equipment into regular phase names;
a segment processing module: the protection interval naming method comprises the following steps that irregular protection intervals in all power secondary equipment monitoring signals are named uniformly as regular protection intervals;
a line processing module: the system is used for unifying irregular line names in all the power secondary equipment monitoring signals into regular line names;
a time limit processing module: the protection time limit naming system is used for unifying irregular protection time limit naming in all power secondary equipment monitoring signals into regular protection time limit naming;
a sleeve processing module: the method is used for unifying irregular protection sleeve number naming in all power secondary equipment monitoring signals into regular protection sleeve number naming.
The formula for calculating the edit distance value between the relay protection signal and the standard protection signal by using an edit distance algorithm in the edit distance calculation module is as follows:
wherein the content of the first and second substances,nthe length of the character string representing the relay protection signal,mthe length of the character string representing the standard guard signal,ed[i,j]indicating in the relay protection signaliCharacter and standard guard signaljThe value of the edit distance between the individual characters,ithe second in the character string representing the relay protection signaliThe position of each of the plurality of positions,jthe second of which represents a string of standard protection signalsjThe position of each of the plurality of positions,f i is shown asiThe word frequency of the individual characters,
，krepresenting a correction coefficient, the value of which is less than 0.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that various changes, modifications and equivalents can be made in the embodiments of the invention without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. The fusion processing method of the primary and secondary power equipment is characterized by comprising the following steps:
carrying out standard pretreatment on the acquired monitoring signals of the power secondary equipment;
performing word segmentation on the power secondary equipment monitoring signals subjected to the standard pretreatment to obtain word frequency and word segmentation results of each power secondary equipment monitoring signal, wherein the word segmentation results comprise word segmentation signals and relay protection signals;
acquiring the corresponding relation between the primary power equipment and the secondary power equipment according to the word segmentation signals; calculating an edit distance value between the relay protection signal and a standard protection signal by using an edit distance algorithm according to the word frequency;
and matching the relay protection signal with the minimum edited distance value with the standard protection signal, and obtaining the matching relation among the primary power equipment, the secondary power equipment and the monitoring signal according to the corresponding relation between the primary power equipment and the secondary power equipment.
2. The power secondary equipment fusion processing method according to claim 1, wherein the performing of the specification preprocessing on the obtained power secondary equipment monitoring signal comprises:
irregular phase names in the monitoring signals of the power secondary equipment are unified into regular phase names; uniformly naming irregular protection intervals in the monitoring signals of the secondary power equipment as regular protection intervals; the irregular line names in the monitoring signals of the power secondary equipment are unified into regular line names; unifying irregular protection time limit naming in the power secondary equipment monitoring signals into regular protection time limit naming; and uniformly naming the irregular protective sleeve number in the monitoring signal of the power secondary equipment as a regular protective sleeve number.
3. The electric power primary and secondary device fusion processing method according to claim 1, wherein the word segmentation is performed on the electric power secondary device monitoring signals after the standard preprocessing, so as to obtain a word frequency and a word segmentation result of each electric power secondary device monitoring signal, and specifically:
the method comprises the steps of segmenting words of the monitoring signals of the power secondary equipment through a word segmentation dictionary special for the power field, and counting word frequency of each word and word segmentation results of each monitoring signal of the power secondary equipment.
4. The method for fusion processing of primary and secondary electric power devices according to claim 1, wherein the obtaining of the correspondence between the primary and secondary electric power devices according to the word segmentation signal includes:
and extracting the name of the primary power equipment, the name of the secondary power equipment and the set number of the secondary power equipment from the word segmentation signal, and obtaining the corresponding relation between the primary power equipment and the secondary power equipment according to the name of the primary power equipment, the name of the secondary power equipment and the set number of the secondary power equipment.
5. The electric power primary and secondary equipment fusion processing method according to claim 1, wherein the formula for calculating the edit distance value between the relay protection signal and the standard protection signal by using the edit distance algorithm is as follows:
wherein the content of the first and second substances,nthe length of the character string representing the relay protection signal,mthe length of the character string representing the standard guard signal,ed[i,j]indicating in the relay protection signaliCharacter and standard guard signaljThe value of the edit distance between the individual characters,ithe second in the character string representing the relay protection signaliThe position of each of the plurality of positions,jthe second of which represents a string of standard protection signalsjThe position of each of the plurality of positions,f i is shown asiThe word frequency of the individual characters,
，krepresenting a correction coefficient, the value of which is less than 0.
6. Electric power primary and secondary equipment fuses processing system, its characterized in that includes: the system comprises a standard preprocessing module, a word segmentation and word frequency statistics module, a corresponding relation acquisition module, an edit distance calculation module and a matching module; wherein:
a standard preprocessing module: the system is used for carrying out standard preprocessing on the acquired monitoring signals of the electric power secondary equipment;
word segmentation and word frequency statistics module: the system comprises a word segmentation unit, a word frequency acquisition unit, a word segmentation unit and a relay protection unit, wherein the word segmentation unit is used for performing word segmentation on the electric power secondary equipment monitoring signals subjected to standard preprocessing to obtain a word frequency and a word segmentation result of each electric power secondary equipment monitoring signal;
a correspondence obtaining module: the system comprises a word segmentation unit, a power primary device and a power secondary device, wherein the word segmentation unit is used for obtaining a word segmentation signal;
an edit distance calculation module: the device is used for calculating an edit distance value between the relay protection signal and a standard protection signal by using an edit distance algorithm according to the word frequency;
a matching module: and the system is used for matching the relay protection signal with the standard protection signal when the edit distance value is minimum, obtaining the matching relation among the primary power equipment, the secondary power equipment and the monitoring signal according to the corresponding relation between the primary power equipment and the secondary power equipment, and performing fusion processing on the primary power equipment and the secondary power equipment.
7. The power primary and secondary device fusion processing system according to claim 6, wherein the specification preprocessing module includes a phase processing module, a segment processing module, a line processing module, a time limit processing module, and a set processing module, wherein:
a phase processing module: the system is used for unifying irregular phase names in the monitoring signals of the power secondary equipment into regular phase names;
a segment processing module: the protection interval naming method comprises the following steps of uniformly naming irregular protection intervals in monitoring signals of the electric power secondary equipment as regular protection intervals;
a line processing module: the system is used for unifying irregular line names in the monitoring signals of the power secondary equipment into regular line names;
a time limit processing module: the protection time limit naming system is used for unifying irregular protection time limit naming in the power secondary equipment monitoring signals into regular protection time limit naming;
a sleeve processing module: the method is used for unifying irregular protection sleeve number naming in the power secondary equipment monitoring signals into regular protection sleeve number naming.
8. The electric power primary and secondary equipment fusion processing system according to claim 6, wherein the formula for calculating the edit distance value between the relay protection signal and the standard protection signal by using the edit distance algorithm in the edit distance calculation module is as follows:
wherein the content of the first and second substances,nthe length of the character string representing the relay protection signal,mthe length of the character string representing the standard guard signal,ed[i,j]indicating in the relay protection signaliCharacter and standard guard signaljThe value of the edit distance between the individual characters,ithe second in the character string representing the relay protection signaliThe position of each of the plurality of positions,jthe second of which represents a string of standard protection signalsjThe position of each of the plurality of positions,f i is shown asiThe word frequency of the individual characters,
，krepresenting a correction coefficient, the value of which is less than 0.
9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the power-secondary device fusion processing method according to any one of claims 1 to 5 when executing the computer program.
10. A computer-readable storage medium storing a computer program, wherein the computer program is executed by a processor to implement the steps of the power primary and secondary device fusion processing method according to any one of claims 1 to 5.
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