CN113189422B - Co-location splitting household construction identification method based on electricity utilization curve DTW - Google Patents
Co-location splitting household construction identification method based on electricity utilization curve DTW Download PDFInfo
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- CN113189422B CN113189422B CN202110448609.5A CN202110448609A CN113189422B CN 113189422 B CN113189422 B CN 113189422B CN 202110448609 A CN202110448609 A CN 202110448609A CN 113189422 B CN113189422 B CN 113189422B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/55—Testing for incorrect line connections
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
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Abstract
The invention belongs to the technical field of electricity utilization detection, and particularly relates to a co-location splitting and household building identification method based on an electricity utilization curve DTW, which comprises the following specific operation steps: s1: finding two corresponding electric meters after the house is removed; s2: all electrical appliances on the outlet ends of the two electric meters are completely disconnected; s3: the outlet ends of the two electric meters are sequentially connected with electric equipment with equal power and current detection equipment; s4: alternately switching on the electric equipment and acquiring a current quantity change curve and an electric meter value detected by the current detection equipment; s5: and judging the user relation according to the obtained electric meter value and the current magnitude change curve. The electric meters of two households are compared together, so that the service condition and difference between the two electric meters can be quickly obtained, and the condition of the electric meters can be quickly judged; through the analysis module based on the DTW function, the relation between the corresponding users of the two electric meters can be accurately obtained.
Description
Technical Field
The invention relates to the technical field of power consumption detection, in particular to a co-location splitting household-building identification method based on a power consumption curve DTW.
Background
The electric meter is an electric energy meter for short, is an instrument for measuring electric energy, is also called an electric meter, a fire meter, an electric energy meter and a kilowatt-hour meter, and is an instrument for measuring various electric quantities.
The accurate judgment of the subordination relationship between the distribution transformer and the user is always a difficult problem for power supply enterprises, and is particularly prominent in urban areas. Due to the requirement of urban development, the low-voltage power supply network is fast in change and the conditions of line adjustment and erection are common due to the fact that the normalized work of road transformation, removal, brightening and the like and the fact that most of the normalized work is buried cables. Therefore, the subordination relationship between the transformer and the user is very complicated, the work of line loss, rush repair, new installation and capacity increase and the like is difficult, and the power supply reliability is also influenced.
The subordination relation of a power station (the relation between a power point of a power consumer and a transformer of the power station area, which is called the power station for short) is required to be accurate in the work of line loss, emergency repair, new installation capacity increase and the like of the power supply enterprise. The actual accuracy of the platform relationship is not high due to the situations of historical accumulation, urban road reconstruction, pole line migration, cable grounding and the like. The equipment such as a platform area identifier used by the conventional common piece often has wrong judgment and missed judgment due to the technical characteristics of the equipment. How to make up for the defects of the existing equipment and find out the accurate subscriber station relationship becomes the urgent need for the line loss treatment work. The existing split user identification method is usually a simple detection or inquiry method, which is easy to cause misjudgment and influence the power utilization of users.
Disclosure of Invention
The invention aims to provide a co-location splitting and subscriber building identification method based on a power utilization curve DTW, and the method is used for solving the problem that the existing splitting and subscriber building identification method in the background technology is usually a simple detection or inquiry method, so that misjudgment is easily caused and the power utilization of a user is influenced.
In order to achieve the purpose, the invention provides the following technical scheme: a co-location splitting and household building identification method based on a power utilization curve DTW comprises the following specific operation steps:
s1: finding two corresponding electric meters after the household is removed, marking the two electric meters with two serial numbers, wherein the two electric meters are respectively marked as an electric meter No. 1 and an electric meter No. 2;
s2: all the electrical appliances on the outlet ends of the two electric meters are completely disconnected, so that the two electric meters show no external power transmission, or the outlet ends of the two electric meters are directly disconnected from a circuit connected with the electrical appliances inside users;
s3: the outgoing line ends of the two electric meters are sequentially connected with electric equipment with equal power and current detection equipment, the electric equipment is also in an open circuit state in an initial state, the electric equipment is connected with or disconnected from a circuit through a switch, and the current detection equipment is always in a connected state, so that the current characteristics output by the two electric meters are monitored in real time through the current detection equipment;
s4: alternately switching on the electric equipment and acquiring a current quantity change curve and an electric meter value detected by the current detection equipment;
firstly, starting electric equipment on a No. 1 ammeter, recording a current magnitude change curve of the electric equipment through current detection equipment on the No. 1 ammeter, and simultaneously acquiring the display numerical value change quantity and change rate of the No. 1 ammeter;
then, the electric equipment on the No. 2 ammeter is started, the current amount change curve of the electric equipment is recorded through the current detection equipment on the No. 2 ammeter, and the display value change amount and the change rate of the No. 2 ammeter are acquired at the same time;
s5: and judging the user relationship according to the obtained electric meter numerical value and the current magnitude change curve, and analyzing and judging the display numerical value change quantity, the change rate and the current magnitude change curve of the No. 1 electric meter and the No. 2 electric meter by adopting an analysis module based on the DTW function to obtain the relationship between the two electric meters and the corresponding users.
Preferably, the specific operation mode of finding two electric meters after corresponding user removal in step S1 is as follows:
and finding an incoming line from the electric meter end of the user, finding a corresponding wiring transformer along the incoming line, and then enabling the transformer to be a power supply transformer corresponding to the two electric meters after the user is detached.
Preferably, the current detection device is a current characteristic curve detection device.
Preferably, the number of times of acquiring the display numerical value variation, the variation rate and the current amount of the No. 1 ammeter and the No. 2 ammeter is 5, and the relationship between the two ammeters and the corresponding users is obtained through the final judgment result.
Preferably, the electric equipment is a lighting bulb with a switch.
Compared with the prior art, the invention has the beneficial effects that:
1) through the comparison of the electric meters of two households, the service condition and difference between the two electric meters can be quickly obtained, so that the condition of the electric meters can be quickly judged;
2) through the analysis module based on the DTW function, the relation between the corresponding users of the two electric meters can be accurately obtained.
Drawings
FIG. 1 is a flow chart of the identification method 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 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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The embodiment is as follows:
referring to fig. 1, the present invention provides a technical solution: a co-location splitting and household building identification method based on a power utilization curve DTW comprises the following specific operation steps:
s1: finding two corresponding electric meters after the household is removed, marking the two electric meters with two serial numbers, wherein the two electric meters are respectively marked as an electric meter No. 1 and an electric meter No. 2;
s2: all the electrical appliances on the outlet ends of the two electric meters are completely disconnected, so that the two electric meters show no external power transmission, or the outlet ends of the two electric meters are directly disconnected from a circuit connected with the electrical appliances inside users;
s3: the outgoing line ends of the two electric meters are sequentially connected with electric equipment with equal power and current detection equipment, the electric equipment is also in an open circuit state in an initial state, the electric equipment is connected with or disconnected from a circuit through a switch, and the current detection equipment is always in a connected state, so that the current characteristics output by the two electric meters are monitored in real time through the current detection equipment;
s4: alternately switching on the electric equipment and acquiring a current quantity change curve and an electric meter value detected by the current detection equipment;
firstly, starting electric equipment on a No. 1 ammeter, recording a current magnitude change curve of the electric equipment through current detection equipment on the No. 1 ammeter, and simultaneously acquiring the display numerical value change quantity and change rate of the No. 1 ammeter;
then, the electric equipment on the No. 2 ammeter is started, the current amount change curve of the electric equipment is recorded through the current detection equipment on the No. 2 ammeter, and the display value change amount and the change rate of the No. 2 ammeter are acquired at the same time;
s5: and judging the user relationship according to the obtained electric meter numerical value and the current magnitude change curve, and analyzing and judging the display numerical value change quantity, the change rate and the current magnitude change curve of the No. 1 electric meter and the No. 2 electric meter by adopting an analysis module based on the DTW function to obtain the relationship between the two electric meters and the corresponding users.
General algorithm for DTW
Function dtw.m for implementing DTW algorithm
function dist＝dtw(t,r)
n＝size(t,2)；
m＝size(r,2)；
% frame matching distance matrix
d＝zeros(n,m)；
fori＝1:n
forj＝1:m
d(i,j)＝(t(i)-r(j)).^2；
end
end
% cumulative distance matrix
D＝ones(n,m)*realmax；
% dynamic programming
fori＝1:n
forj＝1:m
ifi＝＝1&&j＝＝1；
D(i,j)＝d(1,1)；
D1＝0；
D2＝0；
D3＝0；
end
ifi＝＝1&&j>1
D1＝D(i,j-1)；
D2＝realmax；
D3＝realmax；
end
ifj＝＝1&&i>1
D1＝D(i-1,j)；
D2＝realmax；
D3＝realmax；
end
ifi>1&&j>1
D1＝D(i-1,j)；
D2＝D(i,j-1)；
D3＝D(i-1,j-1)；
end
D(i,j)＝d(i,j)+min([D1,D2,D3])；
end
end
dist＝D(n,m)；
In the procedure, first two n × m matrices D and D are applied, which are the accumulated distance and the frame matching distance, respectively. Where n and m are the number of frames for the test template and the reference template. The frame matching distance matrix d of the two templates is then calculated through one cycle. Dynamic programming is then performed to calculate, for each bin (i, j), the cumulative distances D1, D2, and D3 of its three possible previous bins. In consideration of the boundary problem, some previous lattice points may not exist, and thus some judgment conditions are added.
And finally, finding the minimum value of the accumulated distances of the three previous lattice points by using a minimum function min as the accumulated distance, and adding the minimum value of the accumulated distances of the three previous lattice points with the matching distance d (i, j) of the current frame to be used as the accumulated distance of the current lattice point. The calculation process reaches the lattice point (n, m) and outputs D (n, m) as a result of template matching.
Detection test 1:
starting the electric equipment on the No. 1 ammeter, and entering the next step when the electric equipment on the No. 1 ammeter works and the No. 1 ammeter generates numerical value change and the No. 2 ammeter generates the same numerical value change;
the electric equipment on the No. 2 ammeter is opened, the electric equipment on the No. 1 ammeter during operation, and this moment, No. 1 ammeter does not produce the numerical value change, and No. 2 ammeter produces the numerical value change, then regards as No. 1 ammeter as main ammeter, and No. 2 ammeter is for connecing the branch ammeter on No. 1 ammeter, and whether there is the data difference between main ammeter and the branch ammeter is judged to the analysis module based on the DTW function, if there is the ammeter change or the adjustment.
Detection test 2:
the utility model discloses a including the electric installation on opening 1 ammeter, the electric installation during operation on 1 ammeter, this moment, 1 ammeter produces numerical value and changes, and 2 ammeters do not produce numerical value and change, then regard as 2 ammeters as main ammeter, and 1 ammeter is for connecing the branch ammeter on 2 ammeters, and whether there is the data difference between main ammeter and the branch ammeter is judged to the analysis module based on the DTW function, if there is to the ammeter change or adjustment.
Further, the specific operation mode of finding the two electric meters after corresponding user removal in step S1 is as follows:
and finding an incoming line from the electric meter end of the user, finding a corresponding wiring transformer along the incoming line, and then enabling the transformer to be a power supply transformer corresponding to the two electric meters after the user is detached. By the method, the transformer corresponding to the electric meters can be accurately found, the power supply source can be found, and cross errors among the user electric meters can be avoided.
Further, the current detection device is a current characteristic curve detection device, and the voltage is generally stable, so that a current-voltage characteristic curve can be drawn according to the current condition detected by the current characteristic curve detection device, the current-voltage characteristic curve is a relation between direct current passing through an electronic instrument and direct current voltage of an instrument terminal, motor engineers determine basic parameters and circuit characteristics of the instrument through the graphs, the current I is represented by a vertical coordinate, the voltage U is represented by a horizontal coordinate, and an I-U image drawn by the graphs is called a volt-ampere characteristic curve graph of a conductor. The current-voltage characteristic curve is for a conductor, that is, a power consuming element, and an image is often used to study the change rule of the resistance of the conductor, which is one of the commonly used image methods in physics. The mutual relation between the two electric meters can be judged according to the conditions between the current and the voltage.
Furthermore, the number of times of acquiring the display numerical value variation, the variation rate and the current amount of the No. 1 ammeter and the No. 2 ammeter is 5 times respectively, and the relationship between the two ammeters and the corresponding users is obtained through the final judgment result.
Furthermore, the electric equipment is a lighting bulb with a switch, the switch can be arranged on the lighting bulb at any time, and the operation is very convenient and fast in the test process.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not to be construed as limiting the claims.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A co-location splitting household-building identification method based on a power utilization curve DTW is characterized by comprising the following steps: the method for identifying the co-location splitting building user based on the electricity utilization curve DTW comprises the following specific operation steps:
s1: finding two corresponding electric meters after the household is removed, marking the two electric meters with two serial numbers, wherein the two electric meters are respectively marked as an electric meter No. 1 and an electric meter No. 2;
s2: all the electrical appliances on the outlet ends of the two electric meters are completely disconnected, so that the two electric meters show no external power transmission, or the outlet ends of the two electric meters are directly disconnected from a circuit connected with the electrical appliances inside users;
s3: the outgoing line ends of the two electric meters are sequentially connected with electric equipment and current detection equipment with equal power, the electric equipment is in an open circuit state in an initial state, the electric equipment is connected with a circuit or disconnected with the circuit through a switch, and the current detection equipment is always in a connected state, so that the current characteristics output by the two electric meters are monitored in real time through the current detection equipment;
s4: alternately switching on the electric equipment and acquiring a current quantity change curve and an electric meter value detected by the current detection equipment;
firstly, starting electric equipment on a No. 1 ammeter, recording a current magnitude change curve of the electric equipment through current detection equipment on the No. 1 ammeter, and simultaneously acquiring the display numerical value change quantity and change rate of the No. 1 ammeter;
then, the electric equipment on the No. 2 ammeter is started, the current amount change curve of the electric equipment is recorded through the current detection equipment on the No. 2 ammeter, and the display value change amount and the change rate of the No. 2 ammeter are acquired at the same time;
s5: and judging the user relationship according to the obtained electric meter numerical value and the current magnitude change curve, and analyzing and judging the display numerical value change quantity, the change rate and the current magnitude change curve of the No. 1 electric meter and the No. 2 electric meter by adopting an analysis module based on the DTW function to obtain the relationship between the two electric meters and the corresponding users.
2. The co-location splitting household identification method based on the electricity utilization curve DTW as claimed in claim 1, wherein: the specific operation mode of finding the two electric meters after corresponding account removal in the step S1 is as follows:
and finding an incoming line from the electric meter end of the user, finding a corresponding wiring transformer along the incoming line, and then the transformer is a power supply transformer corresponding to the two electric meters after the user is detached.
3. The co-location splitting household identification method based on the electricity utilization curve DTW as claimed in claim 1, wherein: the current detection device is a current characteristic curve detection device.
4. The co-location splitting household identification method based on the electricity utilization curve DTW as claimed in claim 1, wherein: and the display numerical value variation, the variation rate and the current quantity acquisition times of the No. 1 ammeter and the No. 2 ammeter are respectively 5 times, and the relationship between the two ammeters and the corresponding users is obtained through the final judgment result.
5. The co-location splitting and subscriber identification method based on the power utilization curve DTW as claimed in claim 1, wherein: the electric equipment is a lighting bulb with a switch.
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