CN113822702B - Inter-industry electricity consumption demand correlation analysis system and method under emergency - Google Patents
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Abstract
The invention provides a system and a method for correlation analysis of power consumption requirements among industries under emergency events, and relates to the technical field of data mining and big data. Firstly, collecting the power consumption information of each enterprise, the urban population trip intensity, the medical data and other data to form a matrix to form an original data set, and screening and processing the data in the original data set through a data quantization processing module to form a quantization matrix and a weight vector. And forming a candidate matrix by the quantization matrix through the data candidate module, generating an association matrix by the candidate matrix and the weight vector through the support degree generation and screening module, forming a candidate matrix by the association matrix through the data candidate module, and the like until a required association rule is generated.
Description
Technical Field
The invention relates to the technical field of data mining and big data, in particular to a system and a method for correlation analysis of power consumption requirements among industries under emergency.
Background
The association rule mining technology has gradually become one of the most important mining technologies in the field of data mining, and the most direct method for reflecting the association rule between two events is to use the association mining technology. However, the association rule algorithm in the existing research still has large time consumption, and has not been analyzed and applied to the inter-industry electricity consumption requirement under the emergency condition. Along with the development of modernization and informatization of a power system, a large amount of data is generated in the aspects of power consumption, power factor and the like of the power system, the correlation between power consumption requirements among industries is analyzed, and the planning and management of the power system are helped to play a key role.
However, the current association rule algorithm has the following problems: 1. no correlation analysis algorithm specific to the power consumption requirement of the power system exists; 2. the power system has huge data, a large number of candidate item sets can be generated in calculation, and a large amount of time is required to be consumed; 3. multiple scans of the original dataset are required, resulting in frequent I/O usage and increased costs.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a system and a method for correlation analysis of power consumption requirements among industries under emergency. The association rule mining can be carried out on huge data of the power system through a reasonable algorithm and preprocessing of the data, and the problem of large calculation amount caused by huge data amount in the traditional data mining algorithm is solved.
In order to solve the technical problems, the invention adopts the following technical scheme:
on the one hand, the inter-industry electricity consumption demand association analysis system under the emergency event comprises a data quantization processing module, a data candidate module, a weight vector module, a support degree generation and screening module and an association rule generation module;
the data quantization processing module processes the data of the acquired original data set by adopting an interval weight method to generate a quantization matrix and transmits the quantization matrix to the data candidate module and the weight vector module respectively;
the data candidate module generates a candidate matrix by adopting a correlation combination method, and the weight vector module reduces the complexity of the calculation of the correlation matrix by scanning the quantization matrix and outputs the complexity to the support degree generation and screening module;
the support degree generation and screening module is used for screening vectors meeting the minimum support degree in the candidate matrix, combining the vectors into an association matrix and outputting the association matrix to the association rule generation module;
the association rule generation module outputs inter-industry electricity consumption requirement association under emergency;
on the other hand, the inter-industry electricity consumption demand correlation analysis method under the emergency is realized by the inter-industry electricity consumption demand correlation analysis system under the emergency, and comprises the following steps:
step 1: acquiring power consumption information of enterprises in various industries, urban population trip intensity and medical data to form a matrix to form an original data set; wherein the medical data comprises newly increased suspected cases, confirmed cases, healed people, dead people, accumulated suspected cases, confirmed cases, healed people and dead people;
step 2: scanning an original data set, and carrying out quantization processing on enterprise electricity consumption data and urban population trip intensity data in each industry through a data quantization processing module, namely converting the original data set into a quantization matrix by taking the growth rate of the data as a standard;
step 2.1, set D ij For the original dataset D t Calculating the data growth rate M:
wherein the original data set D t The method comprises the following steps:
step 2.2: let d pn For quantizing the elements in the matrix, d is calculated by interval weighting pn The method comprises the following steps:
step 2.3: by d pn Generating vector I in quantization matrix p :
I p =(d p1 … d pn )
Step 2.4: from vector I p Generating quantization matrix D quantify :
Step 3, scanning the quantization matrix to generate a weight vector W, and if repeated vectors are found in the process of scanning the quantization matrix, adding one to the corresponding weight and deleting the corresponding vector in the matrix; initial weight vector W 0 Is defined as
W 0 ={1,1,…,1}
Step 4: and combining the vectors in the quantization matrix into a candidate matrix according to a correlation degree combination method, wherein the combination method combines the vectors pairwise according to the correlation degree between the vectors.
Step 4.1, set A i (i=1,2,3…),B i (i=1, 2,3 …) is the vector I in the quantization matrix u Sum vector I v The element in (2) can calculate the vector I u Sum vector I v The method comprises the following steps:
I u =(A 1 A 2 … A n )
I v =(B 1 B 2 … B n )
step 4.2: vector I in the quantization matrix u Sum vector I v Corresponding element A in (3) i (i=1,2,3…),B i (i=1, 2,3, …) are combined according to a correlation combination method, and the element C in the candidate matrix is calculated n :
Step 4.3: element C in the candidate matrix to be calculated i (i=1, 2,3 …) are combined into vectors and named I uv Represented by vector I in the quantization matrix u Sum vector I v Is combined.
I uv =(C 1 C 2 … C n )
Step 4.4: and combining the vectors in the candidate matrix into the candidate matrix. The candidate matrix is:
D candidate =(I 12 I 23 … I uv ) T
step 5: and converting the candidate matrix into an incidence matrix by a support generating and screening module.
Step 5.1; setting the minimum support degree in a support degree generation and screening module;
step 5.2, calculating the support degree of each item in the candidate matrix, wherein the support degree represents the association degree of two items in the candidate matrix, is the product of the weight vector W and the number of corresponding item vectors in the candidate matrix, and is expressed as follows:
sup_d(I uv )=WI j
wherein sup_d (I uv ) Is vector I uv Is a support of (1).
Step 5.3; deleting the items with the minimum support degree, and forming an association matrix by the rest items;
step 6: the association matrix D is obtained through a data candidate module con-k Generating candidate matrix D candidate-k+1 Connecting every two vectors in the incidence matrix by using a correlation combination method, and removing the redundant items;
step 6.1: set up the association matrix D con-k And vector I therein uv ,I vw The following form:
D con-k =[I 12 I 13 … I uv I vw ] T
step 6.2: will associate matrix D con-k The vectors in (2) are combined two by adopting a correlation degree combination method, and the remainder is removed, wherein the remainder is a vector formed by combining K+2 or more quantization matrix vectors.
Step 6.3: will remain vector I uvw The combined matrix is defined as candidate matrix D candidate-k+1 。
D candidate-k+1 =(I 123 I 124 … I uvw ) T
Step 7, repeating the step 5 and the step 6 to generate an association matrix and a candidate matrix D candidate-k+1 And obtaining the association rule of the power consumption requirement among industries until all the association matrixes are generated.
The beneficial effects of the invention are as follows:
the invention provides a system and a method for correlation analysis of power consumption requirements among industries under emergency, which have the following beneficial effects:
1. the association rule mining can be carried out on huge data of the power system through a reasonable algorithm and preprocessing of the data, and the problem of large calculation amount caused by huge data amount in the traditional data mining algorithm is solved.
2. The original data set is only required to be scanned once, so that the use times of the I/O are reduced, and the cost is saved.
Drawings
FIG. 1 is a system general flow diagram of the present invention;
FIG. 2 is a program flow diagram of a data quantization processing module of the present invention;
FIG. 3 is a flow chart of a process for generating candidate matrices by a data candidate module for quantization matrices according to the present invention;
FIG. 4 is a flow chart of a process of the support generation and screening module of the present invention;
FIG. 5 is a flow chart of a process for generating candidate matrices from an association matrix by a data candidate module in accordance with the present invention.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
On the one hand, as shown in fig. 1, the inter-industry electricity consumption demand association analysis system under the emergency event comprises a data quantization processing module, a data candidate module, a weight vector module, a support degree generation and screening module and an association rule generation module;
the data quantization processing module processes the data of the acquired original data set by adopting an interval weight method to generate a quantization matrix and transmits the quantization matrix to the data candidate module and the weight vector module respectively;
the interval weight method is that the original data set is scanned, the data increase rate is 0-10% compared with the previous day, and the corresponding element of the quantization matrix is set to be 1; the data has an increase rate of 10% -50% compared with the previous day, and the corresponding element of the quantization matrix is set to be 2; the data has a growth rate of greater than 50% for the previous day, and the quantization matrix corresponding element is set to 3. The data is-10% -0 compared with the previous day, the corresponding element of the quantization matrix is-1, the data is-50% -10% compared with the previous day, the corresponding element of the quantization matrix is-2, the data is less than-50% compared with the previous day, and the corresponding element of the quantization matrix is-3.
The data candidate module generates a candidate matrix by adopting a correlation combination method, and the weight vector module reduces the complexity of the calculation of the correlation matrix by scanning the quantization matrix and outputs the complexity to the support degree generation and screening module;
the support degree generation and screening module is used for screening vectors meeting the minimum support degree in the candidate matrix, combining the vectors into an association matrix and outputting the association matrix to the association rule generation module; the vector in the candidate matrix meeting the minimum support number indicates that the association between the inter-industry electricity consumption amounts meets the minimum association requirement.
The association rule generation module outputs inter-industry electricity consumption requirement association under emergency;
on the other hand, the inter-industry electricity consumption demand correlation analysis method under the emergency is realized by the inter-industry electricity consumption demand correlation analysis system under the emergency, and comprises the following steps:
step 1: acquiring power consumption information of enterprises in various industries, urban population trip intensity and medical data to form a matrix to form an original data set; wherein the medical data comprises newly increased suspected cases, confirmed cases, healed people, dead people, accumulated suspected cases, confirmed cases, healed people and dead people;
the original data set format in this embodiment is shown in table 1;
table 1: an original dataset matrix table;
step 2: scanning an original data set, and carrying out quantization processing on enterprise electricity consumption data and urban population trip intensity data in each industry through a data quantization processing module, namely converting the original data set into a quantization matrix by taking the growth rate of the data as a standard; as shown in fig. 2;
step 2.1, set D ij For the original dataset D t Calculating the data growth rate M:
wherein the original data set D t The method comprises the following steps:
step 2.2: let d pn For quantizing the elements in the matrix, d is calculated by interval weighting pn The method comprises the following steps:
step 2.3: by d pn Generating vector I in quantization matrix p :
I p =(d p1 … d pn )
Step 2.4: from vector I p Generating quantization matrix D quantify :
Step 3, scanning the quantization matrix to generate a weight vector W, and if repeated vectors are found in the process of scanning the quantization matrix, adding one to the corresponding weight and deleting the corresponding vector in the matrix; initial weight vector W 0 Is defined as
W 0 ={1,1,…,1}
In the present embodiment, if the matrix D is quantized quantify The weight vector W is as follows:
wherein matrix D quantify The first column and the third column vector are equal, the third column of the quantization matrix and the weight vector thereof is deleted, and the corresponding weight in the weight vector is added by one, and the result is that:
step 4: the vectors in the quantization matrix are combined into candidate matrices according to a correlation combining method, as shown in fig. 3, and the combining method combines the vectors two by two according to the correlation degree between the vectors.
Step 4.1, set A i (i=1,2,3…),B i (i=1, 2,3 …) is the vector I in the quantization matrix u Sum vector I v The element in (2) can calculate the vector I u Sum vector I v The method comprises the following steps:
I u =(A 1 A 2 … A n )
I v =(B 1 B 2 … B n )
step 4.2: vector I in the quantization matrix u Sum vector I v Corresponding element A in (3) i (i=1,2,3…),B i (i=1, 2,3, …) are combined according to a correlation combination method, and the element C in the candidate matrix is calculated n :
Step 4.3: element C in the candidate matrix to be calculated i (i=1, 2,3 …) are combined into vectors and named I uv Represented by vector I in the quantization matrix u Sum vector I v Is combined.
I uv =(C 1 C 2 … C n )
Step 4.4: and combining the vectors in the candidate matrix into the candidate matrix. The candidate matrix is:
D candidate =(I 12 I 23 … I uv ) T
step 5: the candidate matrix is converted to an associated matrix by the support generation and screening module, as shown in fig. 4.
Step 5.1; setting the minimum support degree in a support degree generation and screening module;
step 5.2, calculating the support degree of each item in the candidate matrix, wherein the support degree represents the association degree of two items in the candidate matrix, is the product of the weight vector W and the number of corresponding item vectors in the candidate matrix, and is expressed as follows:
sup_d(I uv )=WI j
wherein sup_d (I uv ) Is vector I uv Is a support of (1).
Step 5.3; deleting the items with the minimum support degree, and forming an association matrix by the rest items;
step 6: the association matrix D is obtained through a data candidate module con-k Generating candidate matrix D candidate-k+1 As shown in fig. 5, each two vectors in the association matrix are connected by using a correlation combination method, and the rest items are removed;
step 6.1: set up the association matrix D con-k And vector I therein uv ,I vw The following form:
D con-k =[I 12 I 13 … I uv I vw ] T
step 6.2: will associate matrix D con-k The vectors in (2) are combined two by adopting a correlation degree combination method, and the remainder is removed, wherein the remainder is a vector formed by combining K+2 or more quantization matrix vectors.
Step 6.3: will remain vector I uvw The combined matrix is defined as candidate matrix D candidate-k+1 。
D candidate-k+1 =(I 123 I 124 … I uvw ) T
Step 7, repeating the step 5 and the step 6 to generate an association matrix and a candidate matrix D candidate-k+1 And obtaining the association rule of the power consumption requirement among industries until all the association matrixes are generated.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions, which are defined by the scope of the appended claims.
Claims (1)
1. The inter-industry electricity consumption demand association analysis system under the emergency is characterized by comprising a data quantization processing module, a data candidate module, a weight vector module, a support degree generation and screening module and an association rule generation module;
the data quantization processing module processes the data of the acquired original data set by adopting an interval weight method to generate a quantization matrix and transmits the quantization matrix to the data candidate module and the weight vector module respectively;
the data candidate module generates a candidate matrix by adopting a correlation combination method, and the weight vector module reduces the complexity of the calculation of the correlation matrix by scanning the quantization matrix and outputs the complexity to the support degree generation and screening module;
the support degree generation and screening module is used for screening vectors meeting the minimum support degree in the candidate matrix, combining the vectors into an association matrix and outputting the association matrix to the association rule generation module;
the association rule generation module outputs inter-industry electricity consumption requirement association under emergency;
the inter-industry electricity consumption demand correlation analysis system under the emergency is used for realizing an inter-industry electricity consumption demand correlation analysis method under the emergency, and comprises the following steps:
step 1: acquiring power consumption information of enterprises in various industries, urban population trip intensity and medical data to form a matrix to form an original data set; wherein the medical data comprises newly increased suspected cases, confirmed cases, healed people, dead people, accumulated suspected cases, confirmed cases, healed people and dead people;
step 2: scanning an original data set, and carrying out quantization processing on enterprise electricity consumption data and urban population trip intensity data in each industry through a data quantization processing module, namely converting the original data set into a quantization matrix by taking the growth rate of the data as a standard;
step 2.1, set D ij For the original dataset D t In the presence of an element of the group,calculating a data growth rate M:
wherein the original data set D t The method comprises the following steps:
step 2.2: let d pn For quantizing the elements in the matrix, d is calculated by interval weighting pn The method comprises the following steps:
step 2.3: by d pn Generating vector I in quantization matrix p :
I p =(d p1 … d pn )
Step 2.4: from vector I p Generating quantization matrix D quantify :
Step 3, scanning the quantization matrix to generate a weight vector W, and if repeated vectors are found in the process of scanning the quantization matrix, adding one to the corresponding weight and deleting the corresponding vector in the matrix; initial weight vector W 0 Is defined as
W 0 ={1,1,…,1}
Step 4: combining vectors in the quantization matrix into a candidate matrix according to a correlation degree combination method, wherein the combination method combines the vectors pairwise according to the correlation degree between the vectors;
step 4.1, set A i (i=1,2,3…),B i (i=1, 2,3 …) is the vector I in the quantization matrix u Sum vector I v In (a) elementsElement, vector I can be calculated u Sum vector I v The method comprises the following steps:
I u =(A 1 A 2 … A n )
I v =(B 1 B 2 … B n )
step 4.2: vector I in the quantization matrix u Sum vector I v Corresponding element A in (3) i (i=1,2,3…),B i (i=1, 2,3, …) are combined according to a correlation combination method, and the element C in the candidate matrix is calculated n :
Step 4.3: element C in the candidate matrix to be calculated i (i=1, 2,3 …) are combined into vectors and named I uv Represented by vector I in the quantization matrix u Sum vector I v Is combined into a whole;
I uv =(C 1 C 2 … C n )
step 4.4: combining vectors in the candidate matrixes into candidate matrixes, wherein the candidate matrixes are as follows:
D candidate =(I 12 I 23 … I uv ) T
step 5: converting the candidate matrix into an associated matrix by a support degree generation and screening module;
step 5.1; setting the minimum support degree in a support degree generation and screening module;
step 5.2, calculating the support degree of each item in the candidate matrix, wherein the support degree represents the association degree of two items in the candidate matrix, is the product of the weight vector W and the number of corresponding item vectors in the candidate matrix, and is expressed as follows:
sup_d(I uv )=WI j
wherein sup_d (I uv ) Is vector I uv Is a support degree of (2);
step 5.3; deleting the items with the minimum support degree, and forming an association matrix by the rest items;
step 6: the association matrix D is obtained through a data candidate module con-k Generating candidate matrix D candidate-k+1 Connecting every two vectors in the incidence matrix by using a correlation combination method, and removing the redundant items;
step 6.1: set up the association matrix D con-k And vector I therein uv ,I vw The following form:
D con-k =[I 12 I 13 … I uv I vw ] Τ
step 6.2: will associate matrix D con-k The vectors in (a) are combined two by adopting a correlation degree combination method, and the rest is removed, wherein the rest is a vector formed by combining K+2 or more quantization matrix vectors;
step 6.3: will remain vector I uvw The combined matrix is defined as candidate matrix D candidate-k+1 ;
D candidate-k+1 =(I 123 I 124 … I uvw ) Τ
Step 7: repeating the step 5 and the step 6 to generate an association matrix and a candidate matrix D candidate-k+1 And obtaining the association rule of the power consumption requirement among industries until all the association matrixes are generated.
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