CN108876476B - A kind of electric switch event detecting method and system - Google Patents
A kind of electric switch event detecting method and system Download PDFInfo
- Publication number
- CN108876476B CN108876476B CN201810768506.5A CN201810768506A CN108876476B CN 108876476 B CN108876476 B CN 108876476B CN 201810768506 A CN201810768506 A CN 201810768506A CN 108876476 B CN108876476 B CN 108876476B
- Authority
- CN
- China
- Prior art keywords
- data
- time window
- general power
- power sequence
- chi
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 238000000546 chi-square test Methods 0.000 claims abstract description 11
- 239000013589 supplement Substances 0.000 claims description 19
- 230000001502 supplementing effect Effects 0.000 claims description 5
- 235000013399 edible fruits Nutrition 0.000 claims description 2
- 238000000354 decomposition reaction Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/02—Marketing; Price estimation or determination; Fundraising
- G06Q30/0201—Market modelling; Market analysis; Collecting market data
- G06Q30/0202—Market predictions or forecasting for commercial activities
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
Landscapes
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Strategic Management (AREA)
- Finance (AREA)
- Economics (AREA)
- Development Economics (AREA)
- Accounting & Taxation (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Entrepreneurship & Innovation (AREA)
- Marketing (AREA)
- Physics & Mathematics (AREA)
- General Business, Economics & Management (AREA)
- Tourism & Hospitality (AREA)
- General Health & Medical Sciences (AREA)
- Water Supply & Treatment (AREA)
- Data Mining & Analysis (AREA)
- Public Health (AREA)
- Human Resources & Organizations (AREA)
- Primary Health Care (AREA)
- Game Theory and Decision Science (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The present invention discloses a kind of electric switch event detecting method and system.This method comprises: obtaining the general power sequence to be detected of the electric appliance acquired in chronological order；It establishes first time window and follows the second time window of first time window closely, the capacity of first time window and the second time window is odd number；Data filling is carried out to the left and right side of general power sequence to be detected；From the first data sliding first time window and the second time window of the center of first time window alignment general power sequence, until the last one data of the center alignment general power sequence of first time window, the step-length of one data of every sliding, Chi-square Test is carried out to the data in first time window and the data in the second time window, so that it is determined that whether switch events occur at each data in general power sequence.Method and system of the invention can effectively avoid influence of the noise to detection accuracy, improve accuracy in detection.
Description
Technical field
The present invention relates to electric switch event technical fields, more particularly to a kind of electric switch event detecting method and are
System.
Background technique
With the development of smart grid, the analysis of household electricity load is become more and more important.Pass through point of power load
Analysis, domestic consumer can obtain the power information of each electric appliance and the fining inventory of the electricity charge in time；Power department can obtain
More detailed user power utilization information is obtained, and the accuracy of electro-load forecast can be improved, provides overall planning for power department
Foundation.Meanwhile using the power information of each electric appliance, would know that the electricity consumption behavior of user, this for family's energy consumption assessment and
The research of Energy Saving Strategy has directive significance.
Current power load decomposition is broadly divided into two methods of intrusive load decomposition and non-intrusion type load decomposition.It is non-to invade
Enter formula load decomposition method not needing that monitoring device is installed in the power inside equipment of load, it is only necessary to total according to power load
Information can be obtained the information on load of each electrical equipment.Non-intrusion type load decomposition method has less investment, convenient to use etc.
Feature, therefore, this method are suitable for the decomposition of family's load electricity consumption.
In non-intrusion type load decomposition algorithm, the switch events detection of electrical equipment is most important one link.Initially
Switch events detect judgment basis using the changing value Δ P of active-power P as event detection, it is convenient and intuitively.This be because
It changes for the operating status of any one electrical equipment, consumed performance number also necessarily changes, and this changes
Change will also embody in the general power consumed by all electric appliances.Conjunction of this method in addition to needing to be arranged power change values
Manage threshold value, it is also necessary to solve the problems, such as that event detecting method exists in practical applications: the instantaneous function at certain appliance starting moment
Rate value will appear biggish spike (for example, motor start-up current is much larger than rated current), will cause the variation of electric appliance steady state power
Value inaccuracy, to influence the judgement to switch events；The transient process or length or short of different household electrical appliance, therefore changed power
The determination of value becomes more difficult；The case where mutation will appear due to variation (such as voltage die) active power of power quality,
It is likely to judge by accident in this way.
According to the active power data of the common brand of household electrical appliance, typical active power data, can be with as shown in table 1-1
Find out that only illumination class electrical appliance active power is smaller, other electrical appliances are substantially all in 50W or more, so what the event of determination occurred
Changed power threshold value is set as 50W.
The active power meter of the common household electrical appliance of table 1
Existing switch events detection method are as follows: calculate the active power that each moment reads and read with corresponding last moment
The difference of the active power taken, judges whether the absolute value of the difference is greater than or equal to 30W, and will continuously meet difference and be greater than or wait
It is poor to make in the head and the tail moment corresponding active power for the period that all moment of 30W form, and obtains head and the tail difference power, judgement should
Whether head and the tail power absolute value of the difference is greater than or equal to 50W, then determines if more than or equal to 50W and is switched in the period
Event determines if being less than 50W and power swing occurs in the period.
Existing switch events detection method can identify the switch thing of active power changing value bigger (being greater than 70W)
Part, since system is there are the reason of noise, the electric appliance of certain active power close to threshold value (i.e. 50W) is caused active on startup
Power increase may be weakened by system noise, thus can not accurately identify.
Summary of the invention
The object of the present invention is to provide a kind of electric switch event detecting method and systems, effectively avoid noise to detection essence
The influence of degree improves accuracy in detection.
To achieve the above object, the present invention provides following schemes:
A kind of electric switch event detecting method, comprising:
Obtain the general power sequence to be detected of the electric appliance acquired in chronological order；
Establish first time window and the second time window, the capacity of the first time window and second time window is L
A data, wherein L is odd number；Second time window follows the first time window closely；
Data filling is carried out to the left and right side of the general power sequence, make the first time window and it is described second when
Between window from first data that the center of the first time window is directed at the general power sequence slide into the first time window
Center when being directed at the last one data of the general power sequence, filled out in the first time window and second time window
Full of L data；
First data for being directed at the general power sequence from the center of the first time window slide the first time
Window and second time window, until the center of the first time window is directed at the last one data of the general power sequence,
The step-length of one data of every sliding carries out card side to the data in the first time window and the data in second time window
It examines, so that it is determined that whether switch events occur at each data in the general power sequence；
Record serial number of all data that switch events occur in the general power sequence.
Optionally, the left and right side to the general power sequence carries out data filling, specifically includes:
At least by the left side supplement of the general power sequenceA data；Left side supplements at leastA data with
The data of the general power sequence leftmost side are identical；
At least by the right side supplement of the general power sequenceA data；Right side supplements at leastA data
It is identical as the data of the general power sequence rightmost side.
Optionally, the step-length of one data of every sliding, when to the data in the first time window with described second
Between data in window carry out Chi-square Test, so that it is determined that whether occurring to switch thing at each data in the general power sequence
Part specifically includes:
The maximum value and minimum value for seeking all data in the first time window, obtain value interval；
The value interval is divided into K sections, obtains K sections of minizones；
Calculate quantity F of the data in each minizone in the first time window(n) P(k) and described second
Quantity F of the data in each minizone in time window(n) Q(k)；Wherein n indicates to be located in the first time window
Serial number of the data of the heart in the general power sequence；K is minizone serial number, k=1,2 ..., K；
Number of computations difference ratio:
According to parameter K and confidence alpha, chi-square value χ is obtained by inquirying card side's table2(α,K-1)；
Judge whether the number differences ratio is greater than or equal to the chi-square value, obtains the first judging result；
If first judging result indicates that the number differences ratio is greater than or equal to the chi-square value, it is determined that in institute
State generation switch events at the nth data of general power sequence；If first judging result indicates the number differences ratio
Less than the chi-square value, it is determined that switch events do not occur at the nth data of the general power sequence.
Invention additionally discloses a kind of electric switch event detection systems, comprising:
Power sequence obtains module, for obtaining the general power sequence to be detected of the electric appliance acquired in chronological order；
Time window establishes module, for establishing first time window and the second time window, the first time window and described
The capacity of two time windows is L data, and wherein L is odd number；Second time window follows the first time window closely；
Database population module carries out data filling for the left and right side to the general power sequence, makes described first
Time window and second time window are directed at first data source of the general power sequence from the center of the first time window
It moves when being directed at the last one data of the general power sequence to the center of the first time window, the first time window and institute
It states and fills full L data in the second time window；
Switch events detection module, for being directed at first of the general power sequence from the center of the first time window
Data slide the first time window and second time window, until the center of the first time window is directed at the general power
The last one data of sequence, the step-length of one data of every sliding, when to the data in the first time window with described second
Between data in window carry out Chi-square Test, so that it is determined that whether occurring to switch thing at each data in the general power sequence
Part；
Logging modle, for recording serial number of all data that switch events occur in the general power sequence.
Optionally, the database population module, specifically includes:
The left fills unit of sequence, for supplementing at least the left side of the general power sequenceA data；Left side supplement
At leastA data are identical as the data of the general power sequence leftmost side；
The right fills unit of sequence, for supplementing at least the right side of the general power sequenceA data；Right side supplement
At leastA data are identical as the data of the general power sequence rightmost side.
Optionally, the switch events detection module, specifically includes:
Interval computation unit is taken for seeking the maximum value and minimum value of all data in the first time window
It is worth section；
Interval division unit obtains K sections of minizones for the value interval to be divided into K sections；
Interval censored data amount computing unit, for calculating the data in the first time window in each minizone
Quantity F(n) P(k) the quantity F with the data in second time window in each minizone(n) Q(k)；Wherein n table
Show serial number of the data positioned at the first time window center in the general power sequence；K be minizone serial number, k=1,
2,…,K；
Computation unit is used for number of computations difference ratio:
Chi-square value query unit, for obtaining chi-square value χ by inquirying card side's table according to parameter K and confidence alpha2(α,K-
1)；
Judging unit obtains first and sentences for judging whether the number differences ratio is greater than or equal to the chi-square value
Disconnected result；
Switch events determination unit, if indicating that the number differences ratio is greater than or equal to for first judging result
The chi-square value, it is determined that switch events occur at the nth data of the general power sequence；If first judging result
Indicate that the number differences ratio is less than the chi-square value, it is determined that do not occur at the nth data of the general power sequence
Switch events.
The specific embodiment provided according to the present invention, the invention discloses following technical effects: electric switch of the invention
Event detecting method and system pay close attention to the number that performance number falls into some section using the method identification switch event of Chi-square Test
Amount, can be avoided the size dependent on power difference, to effectively avoid the influence of noise or power swing, it is accurate to improve detection
Degree.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the method flow diagram of electric switch event detecting method embodiment of the present invention；
Fig. 2 is the system construction drawing of electric switch event detection system embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of electric switch event detecting method and systems, effectively avoid noise to detection essence
The influence of degree improves accuracy in detection.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is the method flow diagram of electric switch event detecting method embodiment of the present invention.
Sampled value in time window is fallen into the number in a certain section as the sum of index, statistics number difference by the present invention,
And the sum of this difference compares with chi-square value, the mark whether comparison result is occurred as electric switch event.
Referring to Fig. 1, the electric switch event detecting method, comprising:
Step 101: obtaining the general power sequence to be detected of the electric appliance acquired in chronological order.
General power sequence to be detected is p0,p1,…,pN-1, wherein N be general power sequence to be detected length, i.e., to
The quantity for the general power data that the general power sequence of detection is included.
Step 102: establishing first time window and the second time window, the appearance of the first time window and second time window
Amount is L data, and wherein L is odd number, and L meets 11≤L≤21；Second time window follows the first time window closely.
Step 103: data filling being carried out to the left and right side of the general power sequence, makes the first time window and institute
It states the second time window and slides into described from first data that the center of the first time window is directed at the general power sequence
When the center of one time window is directed at the last one data of the general power sequence, the first time window and second time
Full L data are filled in window.
Wherein, data filling is carried out to the left and right side of the general power sequence, specifically included: by the general power sequence
The left side supplement of column is at leastA data；Left side supplements at leastA data with the general power sequence leftmost side
Data it is identical；At least by the right side supplement of the general power sequenceA data；Right side supplements at leastNumber
According to equal identical as the data of the general power sequence rightmost side.
Step 104: being aligned described in first data sliding of the general power sequence from the center of the first time window
First time window and second time window, until the center of the first time window is directed at last of the general power sequence
A data, the step-length of one data of every sliding, to the data in the first time window and the data in second time window
Chi-square Test is carried out, so that it is determined that whether switch events occur at each data in the general power sequence.
Data sequence in the first time window isWherein n table
Show serial number of the data positioned at the first time window center in the general power sequence；pnFor positioned at the first time window center
Data；P indicates the data sequence of first time window, and p indicates each data in general power sequence；Since the second time window follows closely
First time window, then the data sequence in second time window be
Wherein, the step-length of one data of every sliding, in the data and second time window in the first time window
Data carry out Chi-square Test, so that it is determined that switch events whether occur at each data in the general power sequence, specifically
Include:
Seek the first time window PnThe maximum value and minimum value of interior all data, obtain value interval；It is wherein minimum
Value is denoted as p(n) min=min [Pn], maximum value is denoted as p(n) max=max [Pn], then value interval is [p(n) min,p(n) max]。
The value interval is divided into K sections, obtains K sections of minizones.Wherein the value of K is generally 10；Each minizone
Serial number k, each minizone after dividing can indicate are as follows:
K=1,2 ..., K
N=1,2 ..., N
Calculate quantity F of the data in each minizone in the first time window(n) P(k) and described second
Quantity F of the data in each minizone in time window(n) Q(k)。
Number of computations difference ratio:
According to parameter K and confidence alpha (α is generally taken as 95%), chi-square value χ is obtained by inquirying card side's table2(α,K-1)；
Judge whether the number differences ratio is greater than or equal to the chi-square value, obtains the first judging result；
If first judging result indicates that the number differences ratio is greater than or equal to the chi-square value, i.e. γ(n)≥χ2
(α, K-1), it is determined that switch events occur at the nth data of the general power sequence；If the first judging result table
Show that the number differences ratio is less than the chi-square value, i.e. γ(n)< χ2(α, K-1), it is determined that the of the general power sequence
Switch events do not occur at n data.
Step 105: recording serial number of all data that switch events occur in the general power sequence.
The greatest problem that electric switch event detection is faced is adverse effect of the noise to detection accuracy.Noise is more than one
Determine degree, will cause the very fast decline of detection accuracy.Existing incident Detection Algorithm depends on the size of power difference simultaneously.And this
The number that performance number falls into section is then investigated in invention, and this statistical method can avoid noise or power waves to a certain extent
Dynamic influence.
Therefore, the present invention is to carry out statistics to the distribution of adjacent two data sequences (P and Q) to portray, if the two is poor
The sum of value is less than chi-square value, then it is assumed that the two data sequence (P and Q) distributions having the same do not have switch events；Such as
Fruit is greater than chi-square value, then it is assumed that (distribution of P and Q) are different, it is meant that switch events have occurred for the two data sequences.Using point
Whether cloth is identical, can avoid the influence of noise to a certain extent, improves detection accuracy, and calculation method very simple,
Principle is very clear.
Fig. 2 is the system construction drawing of electric switch event detection system embodiment of the present invention.
Referring to fig. 2, the electric switch event detection system, comprising:
Power sequence obtains module 201, for obtaining the general power sequence to be detected of the electric appliance acquired in chronological order.
Time window establishes module 202, for establishing first time window and the second time window, the first time window and described
The capacity of second time window is L data, and wherein L is odd number；Second time window follows the first time window closely.
Database population module 203 carries out data filling for the left and right side to the general power sequence, makes described the
One time window and second time window are directed at first data of the general power sequence from the center of the first time window
When sliding into the center of the first time window and being directed at the last one data of the general power sequence, the first time window and
Full L data are filled in second time window.
The database population module 203, specifically includes: the left fills unit of sequence and the right fills unit of sequence.Wherein sequence
Left fills unit, for supplementing at least the left side of the general power sequenceA data；Left side supplements at leastIt is a
Data are identical as the data of the general power sequence leftmost side；The right fills unit of sequence, for by the general power sequence
Right side supplements at leastA data；Right side supplements at leastA data with the general power sequence rightmost side
Data are identical.
Switch events detection module 204, for being directed at the of the general power sequence from the center of the first time window
One data slides the first time window and second time window, until the center alignment of the first time window is described total
The last one data of power sequence, the step-length of one data of every sliding, to the data and described the in the first time window
Whether the data in two time windows carry out Chi-square Test, so that it is determined that switching at each data in the general power sequence
Event.
The switch events detection module 204, specifically includes:
Interval computation unit is taken for seeking the maximum value and minimum value of all data in the first time window
It is worth section；Interval division unit obtains K sections of minizones for the value interval to be divided into K sections；Interval censored data amount calculates
Unit, for calculating quantity F of the data in the first time window in each minizone(n) P(k) and described the
Quantity F of the data in each minizone in two time windows(n) Q(k)；Wherein n indicates to be located at the first time window
Serial number of the data at center in the general power sequence；K is minizone serial number, k=1,2 ..., K；Computation unit is used
In number of computations difference ratio:Chi-square value query unit, for according to parameter K and setting
Reliability α obtains chi-square value χ by inquirying card side's table2(α,K-1)；Judging unit, for whether judging the number differences ratio
More than or equal to the chi-square value, the first judging result is obtained；Switch events determination unit, if being used for first judging result
Indicate that the number differences ratio is greater than or equal to the chi-square value, it is determined that at the nth data of the general power sequence
Switch events occur；If first judging result indicates that the number differences ratio is less than the chi-square value, it is determined that in institute
It states and switch events does not occur at the nth data of general power sequence.
Logging modle 205, for recording serial number of all data that switch events occur in the general power sequence.
The specific embodiment provided according to the present invention, the invention discloses following technical effects: electric switch of the invention
Event detecting method and system pay close attention to the number that performance number falls into some section using the method identification switch event of Chi-square Test
Amount, can be avoided the size dependent on power difference, to effectively avoid the influence of noise or power swing, it is accurate to improve detection
Degree.
For the system disclosed in the embodiment, since it is corresponded to the methods disclosed in the examples, so the ratio of description
Relatively simple, reference may be made to the description of the method.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (4)
1. a kind of electric switch event detecting method characterized by comprising
Obtain the general power sequence to be detected of the electric appliance acquired in chronological order；
Establish first time window and the second time window, the capacity of the first time window and second time window is L number
According to wherein L is odd number；Second time window follows the first time window closely；
Data filling is carried out to the left and right side of the general power sequence, makes the first time window and second time window
First data for being directed at the general power sequence from the center of the first time window slide into the first time window
When the heart is directed at the last one data of the general power sequence, filling is full in the first time window and second time window
L data；
From first data sliding described first of the general power sequence before the alignment filling of the center of the first time window
Time window and second time window, until the general power sequence before the center alignment filling of the first time window is most
The latter data, the step-length of one data of every sliding, in the data and second time window in the first time window
Data carry out Chi-square Test, so that it is determined that whether switch events occur at each data in the general power sequence；
Record serial number of all data that switch events occur in the general power sequence；
The left and right side to the general power sequence carries out data filling, specifically includes:
At least by the left side supplement of the general power sequenceA data；Left side supplements at leastA data with it is described
The data of the general power sequence leftmost side are identical；
At least by the right side supplement of the general power sequenceA data；Right side supplements at leastA data are and institute
The data for stating the general power sequence rightmost side are identical.
2. a kind of electric switch event detecting method according to claim 1, which is characterized in that one number of every sliding
According to step-length, in the first time window data and second time window in data carry out Chi-square Test, thus really
Whether switch events occur at each data in the fixed general power sequence, specifically include:
The maximum value and minimum value for seeking all data in the first time window, obtain value interval；
The value interval is divided into K sections, obtains K sections of minizones；
Calculate quantity F of the data in each minizone in the first time window(n) P(k) and second time
Quantity F of the data in each minizone in window(n) Q(k)；Wherein n indicates to be located at the first time window center
Serial number of the data in the general power sequence；K is minizone serial number, k=1,2 ..., K；
Number of computations difference ratio:
According to parameter K and confidence alpha, chi-square value χ is obtained by inquirying card side's table2(α,K-1)；
Judge whether the number differences ratio is greater than or equal to the chi-square value, obtains the first judging result；
If first judging result indicates that the number differences ratio is greater than or equal to the chi-square value, it is determined that described total
Switch events occur at the nth data of power sequence；If first judging result indicates that the number differences ratio is less than
The chi-square value, it is determined that switch events do not occur at the nth data of the general power sequence.
3. a kind of electric switch event detection system characterized by comprising
Power sequence obtains module, for obtaining the general power sequence to be detected of the electric appliance acquired in chronological order；
Time window establishes module, for establishing first time window and the second time window, the first time window and it is described second when
Between the capacity of window be L data, wherein L is odd number；Second time window follows the first time window closely；
Database population module carries out data filling for the left and right side to the general power sequence, makes the first time
Window and second time window slide into from first data that the center of the first time window is directed at the general power sequence
When the center of the first time window is directed at the last one data of the general power sequence, the first time window and described
Full L data are filled in two time windows；
Switch events detection module, for from the of the general power sequence before the alignment filling of the center of the first time window
One data slides the first time window and second time window, until before the center alignment filling of the first time window
The general power sequence the last one data, it is every sliding one data step-length, to the data in the first time window
Carry out Chi-square Test with the data in second time window, so that it is determined that at each data in the general power sequence whether
Switch events occur；
Logging modle, for recording serial number of all data that switch events occur in the general power sequence；
The database population module, specifically includes:
The left fills unit of sequence, for supplementing at least the left side of the general power sequenceA data；Left side supplements extremely
It is fewA data are identical as the data of the general power sequence leftmost side；
The right fills unit of sequence, for supplementing at least the right side of the general power sequenceA data；Right side supplements extremely
It is fewA data are identical as the data of the general power sequence rightmost side.
4. a kind of electric switch event detection system according to claim 3, which is characterized in that the switch events detection
Module specifically includes:
Interval computation unit obtains value area for seeking the maximum value and minimum value of all data in the first time window
Between；
Interval division unit obtains K sections of minizones for the value interval to be divided into K sections；
Interval censored data amount computing unit, for calculating number of the data in the first time window in each minizone
Measure F(n) P(k) the quantity F with the data in second time window in each minizone(n) Q(k)；Wherein n indicates position
In serial number of the data in the general power sequence of the first time window center；K is minizone serial number, k=1,2 ..., K；
Computation unit is used for number of computations difference ratio:
Chi-square value query unit, for obtaining chi-square value χ by inquirying card side's table according to parameter K and confidence alpha2(α,K-1)；
Judging unit obtains the first judgement knot for judging whether the number differences ratio is greater than or equal to the chi-square value
Fruit；
Switch events determination unit, if it is described to indicate that the number differences ratio is greater than or equal to for first judging result
Chi-square value, it is determined that switch events occur at the nth data of the general power sequence；If first judging result indicates
The number differences ratio is less than the chi-square value, it is determined that does not switch at the nth data of the general power sequence
Event.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810768506.5A CN108876476B (en) | 2018-07-13 | 2018-07-13 | A kind of electric switch event detecting method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810768506.5A CN108876476B (en) | 2018-07-13 | 2018-07-13 | A kind of electric switch event detecting method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108876476A CN108876476A (en) | 2018-11-23 |
| CN108876476B true CN108876476B (en) | 2019-11-08 |
Family
ID=64301561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810768506.5A Expired - Fee Related CN108876476B (en) | 2018-07-13 | 2018-07-13 | A kind of electric switch event detecting method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108876476B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488085A (en) * | 2019-04-30 | 2019-11-22 | 广东石油化工学院 | A kind of detection method and device of the load switch event based on Mode Decomposition |
| CN111161097B (en) * | 2019-12-31 | 2023-07-25 | 四川大学 | Method and device for detecting switch event by event detection algorithm based on hypothesis test |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101429397B1 (en) * | 2013-04-11 | 2014-08-14 | 전북대학교산학협력단 | Method and system for extracting core events based on message analysis in social network service |
| CN104660467A (en) * | 2015-02-10 | 2015-05-27 | 深圳市科信通信技术股份有限公司 | Testing method for communication comprehensive test terminal |
-
2018
- 2018-07-13 CN CN201810768506.5A patent/CN108876476B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN108876476A (en) | 2018-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106096726B (en) | A kind of non-intrusion type load monitoring method and device | |
| CN110633744B (en) | Region identification method for intelligent electric meter | |
| CN105158722A (en) | Evaluation method for performance index of electric energy meter | |
| CN108876476B (en) | A kind of electric switch event detecting method and system | |
| CN101916982A (en) | Judgement and protection method for open phase of frequency-conversion air conditioner compressor | |
| CN102967758A (en) | Separating method for indirect subentry measurement of building energy consumption | |
| CN112396007B (en) | Non-invasive three-threshold detection method and system for load sudden change event of residents | |
| CN110716097B (en) | Power supply network topology identification method and device | |
| US20150088441A1 (en) | Energy usage estimation device and energy usage estimation method | |
| CN109101465B (en) | A kind of electric switch event detecting method and system | |
| CN109145825A (en) | A kind of coherent noise filtering method and system | |
| CN203310908U (en) | Electric energy detection device for air conditioner | |
| CN110221121A (en) | A kind of on-load switch event detecting method and system based on Signal separator | |
| CN109541346A (en) | A kind of non-intrusion type electrical load under steady state condition identifies method for improving | |
| Liu et al. | Study on reliability evaluation method based on improved Monte Carlo method | |
| CN111666870A (en) | Power signal reconstruction method and system by utilizing quadratic constraint | |
| CN110221119A (en) | Load switch event detecting method and system based on power Yu akie fuse information | |
| CN110244115B (en) | Load switch event detection method and system based on signal connectivity | |
| CN112434567B (en) | Power signal filtering method and system by using noise jitter property | |
| Wu et al. | A nonintrusive fast residential load identification algorithm based on frequency‐domain template filtering | |
| CN110133365B (en) | Method and device for detecting switching event of load | |
| US10847975B2 (en) | Conservation voltage reduction system and methods using constant impedance load and constant power load technique | |
| CN111832474A (en) | Power signal filtering method and system by using energy scale | |
| TWI783826B (en) | Power system state analysis method | |
| CN110749841A (en) | Load switch event detection method and system by utilizing conversion space factor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191108 Termination date: 20200713 |