CN110764471A - Electrical appliance energy consumption analysis method and electricity distribution method based on same - Google Patents
Electrical appliance energy consumption analysis method and electricity distribution method based on same Download PDFInfo
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- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The invention relates to an electric appliance energy consumption analysis method and an electricity distribution method based on the same.A controller acquires working current of a loop in which an electric appliance is controlled to obtain electric appliance power, integrates the electric appliance power in a certain time period to obtain a corresponding energy consumption value, directly adjusts the working current to rated current and further monitors the electric appliance power when the electric appliance power exceeds a preset standard, otherwise obtains a closed graph by using the electric appliance power and the time period and compares the closed graph with a comparison model, and outputs a result that the energy consumption is abnormal, and then the controller adjusts the working current of the electric appliance to the rated current and gives an alarm; and tracking the condition of the controlled electric appliance, and cutting off the use and redistributing the energy if the power difference value of the electric appliance does not accord with the regulation requirement. According to the invention, the energy consumption value in a certain time period is obtained by selecting the integral time period, so that the timeliness is high, the monitoring time length is adjustable, the abnormal electrical appliance is processed timely, the energy consumption abnormity judgment is realized by an algorithm, the accuracy is high, and the specific time period for the energy consumption abnormity is clear; the monitoring efficiency is high and the effect is good.
Description
Technical Field
The invention belongs to the field of measuring electrical variables; the technical field of measuring magnetic variables, in particular to an electric appliance energy consumption analysis method and an electricity distribution method based on the same.
Background
Along with the development of science and technology, more and more various types of electric equipment go deep into each family, company, enterprise, along with intelligent process, the type of electric equipment is more and more, and every electric equipment's operating condition also exists differently, can be along with the incessant switching of environment, time's change even.
Energy consumption metering is widely applied to the fields of water consumption, electricity consumption, gas consumption and the like, wherein the performance of the working state of electric equipment is power consumption, and the power consumption is not only related to power, but also related to time, namely energy consumption; energy consumption is the loss of energy per unit time, i.e. the work that electric energy does in a unit time.
For direct current, under a certain voltage, the current is increased, and the power is increased; for sine alternating current, under the condition that the voltage and the power factor are unchanged, the current increasing power is increased; due to the switching of the working state, the energy consumption of some electric devices is difficult to count in the process, so that the abnormal condition of energy consumption occurs.
In the prior art, energy consumption monitoring mainly includes acquiring energy consumption values in a long time after hardware monitoring equipment is installed, acquiring average daily energy consumption values through analysis of each month, namely, performing backtracking after only realizing statistical analysis of overall energy consumption; this monitoring method has the following disadvantages:
(1) the monitoring time is long, and if the electric appliance has problems, the first time adjustment cannot be carried out;
(2) the energy consumption abnormity is judged through experience;
(3) the specific time period during which the energy consumption anomaly occurred cannot be determined.
Disclosure of Invention
The invention solves the problems of energy consumption monitoring in the prior art, and provides an optimized electric appliance energy consumption analysis method and an electricity distribution method based on the same.
The invention adopts the technical scheme that an electric appliance energy consumption analysis method comprises the following steps:
step 1.1: initializing the electric appliance, and carrying out the next step after normal operation is displayed, otherwise, repeating the step 1.1;
step 1.2: initializing a controller;
step 1.3: obtaining the working current of the loop where the current control electrical appliance is positionedI；
Step 1.4: for operating currentIPerforming a pretreatment based on the operating currentIOperating voltage of electrical applianceUAnd power factorpObtaining the power of the electric applianceP；
Step 1.5: the controller sets the above timet 0 Is the starting and current timet f For the ending time period, the power of the appliance in the time periodPIntegrating to obtain the energy consumption value in the time periodW；
Step 1.6: if the energy consumption valueWWhen the working current exceeds the preset standard of the electric appliance, the controller adjusts the working current of the electric applianceITo rated currentI R Returning to the step 1.3, otherwise, carrying out the next step;
step 1.7: power of electric appliancePPlotting the relation of the time periods to obtain a closed graphATo enclose the figureAInputting a comparison model for comparison;
step 1.8: if the output result of the comparison model is that the energy consumption is abnormal, the controller adjusts the working current of the electric applianceITo rated currentI R And alarming, otherwise, returning to the step 1.3.
Preferably, in step 1.2, controller initialization includes reading the rated power of the current applianceP R And initializing the comparison model.
Preferably, in step 1.4, the pre-processing of the working current includes the step of pre-processing the working currentILow pass filtering is performed.
Preferably, in said step 1.5,t 0 andt f is the phase change time, and the time duration of the time period is the period of the alternating currentAn integer multiple of the epoch time.
Preferably, said step 1.7 comprises the steps of:
step 1.7.1: power of electric appliancePAnd plotting the time periods to obtain a closed graphA；
Step 1.7.2: to enclose the figureAPerforming region division to obtainnSub-patternA i ，n≥1，iIs 1 tonAn integer of (d) m;
step 1.7.3: will be provided withnSub-patternA i Inputting the comparison model, and taking the standard closed graph of the current electric applianceS；
Step 1.7.4: computinghuWithout changing the moment, willnSub-patternA i Corresponding to standard closed figureSIn the process, theSIs divided intonAnA i Corresponding sub-patternS i ；
Step 1.7.5: calculate correspondencesA i AndS i the Euclidean distance between;
step 1.7.6: if the Euclidean distance of any region partition is smaller than the threshold valueEIf so, outputting a conclusion and a time period corresponding to the region.
Preferably, the region division is in units of unit time instants.
A power distribution method adopting the electric appliance energy consumption analysis method comprises the following steps:
step 2.1: initializing more than 1 electric appliance, performing the next step after normal operation is displayed, and otherwise, repeating the step 2.1;
step 2.2: the controller is initialized, and the more than 1 electric appliance is accessed;
step 2.3: analyzing the energy consumption of the electric appliances in operation;
step 2.4: when the output result of the comparison model aiming at any electric appliance shows that the energy consumption is abnormal, the controller adjusts the working current of the electric appliance with abnormal energy consumptionITo rated currentI R ；
Step 2.5: obtaining the working current of the current loop of the electrical applianceI'；
Step 2.6: for operating currentI'Performing a pretreatment based on the operating currentI'Operating voltage of electrical applianceUAnd power factorpObtaining the power of the electric applianceP'(ii) a Calculating the power difference value of the current electric applianceδP，δP=P -P'；
Step 2.7: if it isδP＜0Prompting to cut off the current electric appliance and redistributing energy;
if it isδP=0If so, cutting off the current electric appliance, and overhauling the electric appliance to redistribute energy;
if it isδP＞0And returning to the step 2.3.
Preferably, in step 2.7, the energy source redistribution comprises the steps of:
step 2.7.1: obtaining rated power of all running electric appliances controlled by controller after cutting off several electric appliancesP R ；
Step 2.7.2: actual power for all running appliancesPIs less thanP R If not, returning to the step 2.3, otherwise, obtainingmThe number of the electric appliances to be redistributed,mthe next step is carried out, wherein the reaction temperature is more than or equal to 1;
step 2.7.3: obtaining the difference value between the actual power and the rated power of the screened electric applianceε k ，kIs 1 tomAn integer of (d) m;
step 2.7.4: the electric energy after the electric appliance is cut off is as followsε k The ratio of (2) is distributed to the corresponding screened running electric appliances, and the step 2.3 is returned.
The invention provides an optimized electric appliance energy consumption analysis method and an electric appliance distribution method based on the same, wherein a controller is used for obtaining the working current of a loop where a current control electric appliance is located, obtaining the electric appliance power based on the working current, the working voltage of the electric appliance and a power factor, integrating the electric appliance power in a certain time period to obtain a corresponding energy consumption value, if the working current exceeds a preset standard, directly adjusting the working current to the rated current and further monitoring, otherwise, obtaining a closed graph by using the electric appliance power and the time period and comparing the closed graph with a comparison model, and when the output result is that the energy consumption is abnormal, the controller adjusts the working current of the electric appliance to the rated current and gives an alarm; and further, based on the control of each electric appliance, tracking the condition of the controlled electric appliance, and if the power difference value of the electric appliance does not meet the regulation requirement, cutting off the use and redistributing the energy.
The energy consumption value in a certain time period can be obtained through selection of the integral time period, the timeliness is high, the monitoring duration is adjustable, the abnormal electrical appliance is processed at the first time, the energy consumption abnormity judgment is realized through an algorithm, the accuracy is high, and the specific time period for the energy consumption abnormity is clear; the monitoring efficiency is high and the effect is good.
Drawings
FIG. 1 is a flow chart of an electrical appliance energy consumption analysis method of the present invention;
fig. 2 is a flow chart of the electricity distribution method of the present invention.
Detailed Description
The present invention is described in further detail with reference to the following examples, but the scope of the present invention is not limited thereto.
The invention relates to an electric appliance energy consumption analysis method which comprises the following steps.
Step 1.1: and (4) initializing the electric appliance, carrying out the next step after normal operation is displayed, and otherwise, repeating the step 1.1.
In the invention, because the electric appliance which is just started has the conditions of fluctuation, instability and the like, the subsequent work needs to be continued after the electric appliance normally operates.
Step 1.2: the controller is initialized.
In step 1.2, controller initialization includes reading the rated power of the current electrical applianceP R And initializing the comparison model.
In the invention, the controller is a chip and other components which can be selected by a person skilled in the art conventionally, and the controller should include reading, storing and operating functions, and the person skilled in the art can set the controller according to the requirement.
Step 1.3: obtaining current control powerWorking current of loop in which device is locatedI。
Step 1.4: for operating currentIPerforming a pretreatment based on the operating currentIOperating voltage of electrical applianceUAnd power factorpObtaining the power of the electric applianceP。
In step 1.4, the pretreatment of the working current comprises the step of pretreating the working currentILow pass filtering is performed.
In the present invention, the working current is adjustedISampling is carried out, after a voltage signal is obtained, low-pass filtering and signal shaping are carried out on the current, and an analog quantity signal is converted into a digital quantity signal through an analog-to-digital converter and is stored.
In the invention, byP=UIcosφTo obtain the power of the electric applianceP。
Step 1.5: the controller sets the above timet 0 Is the starting and current timet f For the ending time period, the power of the appliance in the time periodPIntegrating to obtain the energy consumption value in the time periodW。
In the step 1.5, the step of the method,t 0 andt f is the phase change moment, and the duration of the time period is integral multiple of the period time of the alternating current.
In the invention, after the digital signal processor processes the digital signal, the digital signal processor processes the electric appliance power of the appointed time slotPThe integration operation is performed to obtain the energy consumption data, which is easily understood by those skilled in the art.
In the invention, in order to ensure the simple operation and the completion of integration, in general,t 0 andt f the phase change time, that is, the time of current commutation, is taken, and the duration of the time period is generally an integral multiple of the period of the alternating current.
Step 1.6: if the energy consumption valueWWhen the working current exceeds the preset standard of the electric appliance, the controller adjusts the working current of the electric applianceITo rated currentI R And returning to the step 1.3, otherwise, carrying out the next step.
In the present invention, if the energy consumption value isWDetermining excess appliancesThe preset standard of (2) generally indicates that the working current is too high, and the working current of the electric appliance is directly adjusted to the rated current or below through the forms of shunting and the like.
Step 1.7: power of electric appliancePPlotting the relation of the time periods to obtain a closed graphATo enclose the figureAInputting the comparison model for comparison.
Step 1.7 comprises the following steps:
step 1.7.1: power of electric appliancePAnd plotting the time periods to obtain a closed graphA；
Step 1.7.2: to enclose the figureAPerforming region division to obtainnSub-patternA i ，n≥1，iIs 1 tonAn integer of (d) m;
the region division is in units of unit time.
Step 1.7.3: will be provided withnSub-patternA i Inputting the comparison model, and taking the standard closed graph of the current electric applianceS；
Step 1.7.4: computinghuWithout changing the moment, willnSub-patternA i Corresponding to standard closed figureSIn the process, theSIs divided intonAnA i Corresponding sub-patternS i ；
Step 1.7.5: calculate correspondencesA i AndS i the Euclidean distance between;
step 1.7.6: if the Euclidean distance of any region partition is smaller than the threshold valueEIf so, outputting a conclusion and a time period corresponding to the region.
In the present invention, there is a case where the current is in a normal fluctuation and the power consumption value is largeWThe whole monitoring time period does not exceed the preset standard of the electric appliance, but the situation that the height is too high or too low can exist in certain time periods, the former damages the electric appliance, and both the former and the latter threaten the whole circuit, so that the sectional checking needs to be carried out on the monitoring time period.
In the present invention, a closed figure is formedAPerforming region segmentation, in generalIn other words, the division is performed on a time-based vertical basis, i.e. the entire graph representing energy consumption is divided into the segmented energy consumption graphs at different time sub-segments. The image segmentation is to divide the connected regions in the image and separate different regions, so that the feature extraction and counting of each region are facilitated.
In the present invention, the method adoptshuDefining central moment according to the characteristics of translation, proportion and rotation invariance of invariant moment, normalizing the central moment, and matching the characteristics to obtain the final productSIs divided intonAnA i Corresponding sub-patternS i 。
In the invention, Euclidean distance is adopted to measure correspondingA i AndS i and distinguishing the similarity degree by using a threshold, when the similarity degree does not exceed the threshold, determining that the energy consumption is in a normal fluctuation range, not alarming, and when the similarity degree exceeds the threshold, indicating that the energy consumption has a problem, alarming and outputting a corresponding time period.
Step 1.8: if the output result of the comparison model is that the energy consumption is abnormal, the controller adjusts the working current of the electric applianceITo rated currentI R And alarming, otherwise, returning to the step 1.3.
The invention also relates to a power utilization distribution method adopting the electric appliance energy consumption analysis method, which comprises the following steps.
Step 2.1: more than 1 electric appliance is initialized, the next step is carried out after normal operation is displayed, and otherwise, the step 2.1 is repeated.
Step 2.2: and the controller initializes and accesses the more than 1 electric appliance.
Step 2.3: and analyzing the energy consumption of the electric appliances in operation.
Step 2.4: when the output result of the comparison model aiming at any electric appliance shows that the energy consumption is abnormal, the controller adjusts the working current of the electric appliance with abnormal energy consumptionITo rated currentI R 。
Step 2.5: obtaining the working current of the current loop of the electrical applianceI'。
Step 2.6:for operating currentI'Performing a pretreatment based on the operating currentI'Operating voltage of electrical applianceUAnd power factorpObtaining the power of the electric applianceP'(ii) a Calculating the power difference value of the current electric applianceδP，δP=P -P'。
Step 2.7: if it isδP＜0Prompting to cut off the current electric appliance and redistributing energy;
if it isδP=0If so, cutting off the current electric appliance, and overhauling the electric appliance to redistribute energy;
if it isδP＞0And returning to the step 2.3.
In step 2.7, the energy source redistribution comprises the following steps:
step 2.7.1: obtaining rated power of all running electric appliances controlled by controller after cutting off several electric appliancesP R ；
Step 2.7.2: actual power for all running appliancesPIs less thanP R If not, returning to the step 2.3, otherwise, obtainingmThe number of the electric appliances to be redistributed,mthe next step is carried out, wherein the reaction temperature is more than or equal to 1;
step 2.7.3: obtaining the difference value between the actual power and the rated power of the screened electric applianceε k ，kIs 1 tomAn integer of (d) m;
step 2.7.4: the electric energy after the electric appliance is cut off is as followsε k The ratio of (2) is distributed to the corresponding screened running electric appliances, and the step 2.3 is returned.
In the invention, based on the electric appliance energy consumption analysis method for a single electric appliance, a plurality of electric appliances in a local area can be managed through a controller, namely, the electric appliance energy consumption analysis method is respectively carried out on the plurality of electric appliances; the available electric energy in the local area is often limited, and when the electric appliances need to be forcibly turned off, the working state of the electric appliances in the local area can be optimized by distributing the residual electric energy.
In the invention, after any electric appliance is processed by the electric appliance energy consumption analysis method, the working current of the electric appliance can be adjusted to the rated currentI R But in fact, the performance of the appliance itselfSo that it does not necessarily reach this rated value, the operating current is takenI'And obtaining the updated power of the electric appliance based on the obtained updated powerP'(ii) a And determining whether the control condition of the current electric appliance is finished or not by judging the power before and after updating.
In the present invention, the power before and after the updateδP＜0If the user executes the prompt, the electric appliance is cut off and the energy sources are redistributed; power before and after updateδP=0The problem of the existing electric appliance is shown, and the electric appliance needs to be overhauled, so that the electric appliance is cut off, and the energy sources are redistributed; power before and after updateδP＞0The state is normal and the monitoring is continued.
In the invention, after a certain electric appliance is cut off, the rated power of other running electric appliances is used as the basisP R Screening is carried out when presentmWhen the electric appliances do not reach the rated power, the power of the electric appliances is redistributed, and the distribution is based on the difference value of the actual power and the rated powerε k In the same manner as described above.
The working current of a loop where a current control electric appliance is located is obtained through a controller, the power of the electric appliance is obtained based on the working current, the working voltage of the electric appliance and a power factor, the power of the electric appliance in a certain time period is integrated to obtain a corresponding energy consumption value, if the power of the electric appliance exceeds a preset standard, the working current is directly adjusted to the rated current and is further monitored, otherwise, a closed graph is obtained according to the power of the electric appliance and the time period and is compared with a comparison model, and when the output result is that the energy consumption is abnormal, the controller adjusts the working current of the electric appliance to the rated current and gives an alarm; and further, based on the control of each electric appliance, tracking the condition of the controlled electric appliance, and if the power difference value of the electric appliance does not meet the regulation requirement, cutting off the use and redistributing the energy.
The energy consumption value in a certain time period can be obtained through selection of the integral time period, the timeliness is high, the monitoring duration is adjustable, the abnormal electrical appliance is processed at the first time, the energy consumption abnormity judgment is realized through an algorithm, the accuracy is high, and the specific time period for the energy consumption abnormity is clear; the monitoring efficiency is high and the effect is good.
Claims (8)
1. An electric appliance energy consumption analysis method is characterized in that: the method comprises the following steps:
step 1.1: initializing the electric appliance, and carrying out the next step after normal operation is displayed, otherwise, repeating the step 1.1;
step 1.2: initializing a controller;
step 1.3: obtaining the working current of the loop where the current control electrical appliance is positionedI；
Step 1.4: for operating currentIPerforming a pretreatment based on the operating currentIOperating voltage of electrical applianceUAnd power factorpObtaining the power of the electric applianceP；
Step 1.5: the controller sets the above timet 0 Is the starting and current timet f For the ending time period, the power of the appliance in the time periodPIntegrating to obtain the energy consumption value in the time periodW；
Step 1.6: if the energy consumption valueWWhen the working current exceeds the preset standard of the electric appliance, the controller adjusts the working current of the electric applianceITo rated currentI R Returning to the step 1.3, otherwise, carrying out the next step;
step 1.7: power of electric appliancePPlotting the relation of the time periods to obtain a closed graphATo enclose the figureAInputting a comparison model for comparison;
step 1.8: if the output result of the comparison model is that the energy consumption is abnormal, the controller adjusts the working current of the electric applianceITo rated currentI R And alarming, otherwise, returning to the step 1.3.
2. The electric appliance energy consumption analysis method according to claim 1, characterized in that: in step 1.2, controller initialization includes reading the rated power of the current electrical applianceP R And initializing the comparison model.
3. The electric appliance energy consumption analysis method according to claim 1, characterized in that: in step 1.4, the pretreatment of the working current comprises the step of pretreating the working currentILow pass filtering is performed.
4. The electric appliance energy consumption analysis method according to claim 1, characterized in that: in the step 1.5, the step of the method,t 0 andt f is the phase change moment, and the duration of the time period is integral multiple of the period time of the alternating current.
5. The electric appliance energy consumption analysis method according to claim 1, characterized in that: step 1.7 comprises the following steps:
step 1.7.1: power of electric appliancePAnd plotting the time periods to obtain a closed graphA；
Step 1.7.2: to enclose the figureAPerforming region division to obtainnSub-patternA i ，n≥1，iIs 1 tonAn integer of (d) m;
step 1.7.3: will be provided withnSub-patternA i Inputting the comparison model, and taking the standard closed graph of the current electric applianceS；
Step 1.7.4: computinghuWithout changing the moment, willnSub-patternA i Corresponding to standard closed figureSIn the process, theSIs divided intonAnA i Corresponding sub-patternS i ；
Step 1.7.5: calculate correspondencesA i AndS i the Euclidean distance between;
step 1.7.6: if the Euclidean distance of any region partition is smaller than the threshold valueEIf so, outputting a conclusion and a time period corresponding to the region.
6. The electric appliance energy consumption analysis method according to claim 5, characterized in that: the region division is in units of unit time.
7. An electricity distribution method using the electric appliance energy consumption analysis method according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
step 2.1: initializing more than 1 electric appliance, performing the next step after normal operation is displayed, and otherwise, repeating the step 2.1;
step 2.2: the controller is initialized, and the more than 1 electric appliance is accessed;
step 2.3: analyzing the energy consumption of the electric appliances in operation;
step 2.4: when the output result of the comparison model aiming at any electric appliance shows that the energy consumption is abnormal, the controller adjusts the working current of the electric appliance with abnormal energy consumptionITo rated currentI R ；
Step 2.5: obtaining the working current of the current loop of the electrical applianceI'；
Step 2.6: for operating currentI'Performing a pretreatment based on the operating currentI'Operating voltage of electrical applianceUAnd power factorpObtaining the power of the electric applianceP'(ii) a Calculating the power difference value of the current electric applianceδP，δP=P -P'；
Step 2.7: if it isδP＜0Prompting to cut off the current electric appliance and redistributing energy;
if it isδP=0If so, cutting off the current electric appliance, and overhauling the electric appliance to redistribute energy;
if it isδP＞0And returning to the step 2.3.
8. The electricity distribution method according to claim 7, characterized in that: in step 2.7, the energy source redistribution comprises the following steps:
step 2.7.1: obtaining rated power of all running electric appliances controlled by controller after cutting off several electric appliancesP R ；
Step 2.7.2: actual power for all running appliancesPIs less thanP R If not, returning to the step 2.3, otherwiseTo obtainmThe number of the electric appliances to be redistributed,mthe next step is carried out, wherein the reaction temperature is more than or equal to 1;
step 2.7.3: obtaining the difference value between the actual power and the rated power of the screened electric applianceε k ，kIs 1 tomAn integer of (d) m;
step 2.7.4: the electric energy after the electric appliance is cut off is as followsε k The ratio of (2) is distributed to the corresponding screened running electric appliances, and the step 2.3 is returned.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111988896A (en) * | 2020-08-05 | 2020-11-24 | 薛亮 | Internet of things equipment management method based on edge computing gateway and big data cloud platform |
| CN112612215A (en) * | 2020-12-23 | 2021-04-06 | 珠海大横琴科技发展有限公司 | Energy consumption processing method and device |
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