CN113567722A - Power control method and device for electrical appliance - Google Patents
Power control method and device for electrical appliance Download PDFInfo
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- CN113567722A CN113567722A CN202110775174.5A CN202110775174A CN113567722A CN 113567722 A CN113567722 A CN 113567722A CN 202110775174 A CN202110775174 A CN 202110775174A CN 113567722 A CN113567722 A CN 113567722A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/48—Meters specially adapted for measuring real or reactive components; Meters specially adapted for measuring apparent energy
- G01R11/54—Meters specially adapted for measuring real or reactive components; Meters specially adapted for measuring apparent energy for measuring simultaneously at least two of the following three variables: real component, reactive component, apparent energy
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
Abstract
The invention discloses a power control method for an electrical appliance, which comprises the following steps: estimating the whole accessed electric appliance as an observation group according to the access condition of a historical power supply network of a preset electric appliance; judging the packet loss rate of the electric appliances in the observation group, estimating the power consumption of the electric appliances in the observation group, and determining the electric appliances needing power reduction; aiming at the condition of an actually accessed electric appliance, reducing the power of the applied electric appliance; detecting the approach degree of the statistical average power consumption of the electric appliances actually connected to the power supply network compared with the preset bearing power; determining a polling period according to the approach degree; randomly acquiring the actual accumulated energy consumption value of one electrical appliance in the electrical appliances actually connected to the power supply network every time; and judging whether the obtained numerical value is larger than the reduced power value or not according to the obtained numerical value, if so, giving an alarm, and adaptively cutting off the corresponding electrical appliance from accessing the power supply network.
Description
Technical Field
The invention relates to the field of electric energy meter control, in particular to a method and a device for controlling power of an electric appliance.
Background
Along with social development, the number and scale of electric appliances connected to a power supply network are larger and larger, and especially in factory areas, the electric appliances are given a certain power utilization index for a specific enterprise each year, the indexes are usually refined to different time periods, for example, when the time periods are different in daytime and nighttime, the total power of the electric appliances allowed to be connected is limited, if the limitation is broken through, certain influence may be brought, for example, the load of the power grid is increased, and correspondingly, due to the influence of stepped electricity prices, more power utilization cost needs to be paid by the enterprise. Generally, enterprises can choose to uniformly reduce the energy consumption of electrical appliances in corresponding time periods to deal with the energy consumption.
For factory enterprises, some electric appliances with the same function are arranged in a factory building, the general working conditions of the electric appliances are expected to meet the requirements, the use conditions of individual electric appliances are not specifically required, and under the condition, if the mode that the electric appliances uniformly reduce power to operate is still adopted, the situation that although the energy consumption is reduced, the corresponding utility is rapidly reduced in an unpredictable manner in a non-proportional manner due to the nonlinear conditions of the energy consumption rate and the utility of the electric appliances is likely to occur.
Disclosure of Invention
An object of the present invention is to provide a method and an apparatus for controlling power of an electrical appliance, so as to solve the problems in the background art.
Specifically, the invention is realized by the following technical scheme:
a power control method for electrical appliances, wherein the electrical appliances are connected to or disconnected from a power supply network according to different moments, each electrical appliance is connected with an electrical energy meter, the electrical energy meters are used for detecting the power of the electrical appliances, each electrical energy meter is connected with a controller, the controller is used for carrying out information interaction with the electrical energy meters, and is also used for controlling the electrical appliances to be connected to or disconnected from the power supply network and applied to the controller, the method comprises the following steps:
s1: estimating electric appliances accessed to the power supply network at the next moment according to the historical power supply network access condition of a preset electric appliance, and listing the estimated accessed electric appliances as an observation group;
s2: judging the packet loss rate of each electrical appliance in the observation group to ensure that the packet loss rates of a preset number of electrical appliances meet the requirements;
s3: estimating the power consumption of the electric appliances in the observation group according to the historical records, and determining the electric appliances needing power reduction according to the magnitude relation between the power consumption and the preset bearing power of the power supply network;
s4: according to the electric appliance needing power reduction, power reduction is carried out on the application electric appliance aiming at the condition of the actually accessed electric appliance;
s5: repeatedly counting the power consumption of the electric appliances actually connected to the power supply network, and detecting the approach degree of the counted average power consumption of the electric appliances actually connected to the power supply network to the preset bearing power;
s6: starting command polling service, and determining a polling period according to the approach degree;
s7: in each polling period, randomly acquiring the actual accumulated energy consumption value of one electrical appliance in the electrical appliances actually connected to the power supply network in unit time each time;
s8: and judging whether the obtained numerical value is larger than the reduced power value or not according to the obtained numerical value, if so, indicating that the current electrical appliance is connected to the power supply network and the load pressure of the power supply network is brought, giving an alarm, and adaptively cutting off the access of the corresponding electrical appliance to the power supply network.
Preferably, the S2 includes:
s21: randomly determining an electric appliance as a target electric appliance for the electric appliances listed in the observation group, performing communication monitoring, monitoring the connection condition of the electric appliances, and judging whether the connection communication packet loss rate of the target electric appliance is less than a preset value;
s22: and adding 1 to the value of the first counter, judging whether the current value of the first counter reaches a first accumulated value, if so, executing S3, if not, judging whether all the electrical appliances in the group are traversed, if so, removing the selected electrical appliance group, then giving an alarm, if not, removing the selected electrical appliances, and then returning to execute S21.
Preferably, the S3 may include:
s31: setting power consumption reference values of all electrical appliances in the observation group in unit time according to the average value of the corresponding historical records;
s32: and judging whether the power consumption reference values of all the electric appliances in the observation group in unit time exceed the preset bearing power of the current power supply network, if not, removing one electric appliance with the minimum power consumption, and then judging again until the bearing power of the power supply network is met.
Preferably, the S4 may include:
s41: reducing the power of the removed electrical appliances according to a preset proportion;
s42: after a preset time period comes, determining the actual power of the electric appliance actually connected to the power supply network and the actual power of the electric appliance;
s43: and judging the total power difference of the electric appliances, and reducing the corresponding electric appliances in the original observation group according to a preset proportion when the total power exceeds a preset bearing power.
Preferably, before performing S43, the method further includes:
s43': and judging the difference of the electrical appliances, and adding labels to the electrical appliances which do not appear in the observation group.
An electrical appliance power control device, wherein electrical appliances are connected to or disconnected from a power supply network according to different moments, each electrical appliance is connected with an electrical energy meter, the electrical energy meters are used for detecting the power of the electrical appliances, each electrical energy meter is connected with a controller, the controller is used for performing information interaction with the electrical energy meters, and is also used for controlling the electrical appliances to be connected to or disconnected from the power supply network, as shown in fig. 5, and the device is applied to a controller and comprises:
the observation group determining module is used for predicting the electric appliances accessed to the power supply network at the next moment according to the historical power supply network access condition of the preset electric appliances and listing the predicted accessed electric appliances as an observation group;
the packet loss rate detection module is used for judging the packet loss rate of each electrical appliance in the observation group to ensure that the packet loss rates of a preset number of electrical appliances meet the requirements;
the power-reducing electric appliance confirming module is used for predicting the power consumption of electric appliances in the observation group according to the historical record and confirming the electric appliances needing power reduction according to the magnitude relation between the power consumption and the preset bearing power of the power supply network;
the power reduction module is used for reducing the power of the electric appliance according to the electric appliance needing to be powered down, and reducing the power of the applied electric appliance according to the condition of the actually accessed electric appliance;
the approach degree determining module is used for repeatedly counting the power consumption of the electric appliances actually connected to the power supply network and detecting the approach degree of the counted average power consumption power of the electric appliances actually connected to the power supply network compared with the preset bearing power;
the polling cycle determining module is used for starting the instruction polling service and determining a polling cycle according to the approach degree;
the unit time accumulated energy consumption statistical module is used for randomly acquiring the actual unit time accumulated energy consumption value of one electric appliance in the electric appliances actually connected to the power supply network in each polling period;
and the early warning module is used for judging whether the obtained numerical value is larger than the reduced power value or not, if so, indicating that the current electrical appliance is connected to the power supply network and can bring the load pressure of the power supply network, giving an alarm and adaptively cutting off the corresponding electrical appliance to be connected to the power supply network.
Preferably, the packet loss rate detecting module includes:
the monitoring submodule is used for randomly determining one electric appliance as a target electric appliance aiming at the electric appliances listed in the observation group, carrying out communication monitoring, monitoring the connection condition of the electric appliances, and judging whether the connection communication packet loss rate of the target electric appliance is smaller than a preset value or not;
and the accumulation submodule is used for adding 1 to the value of the first counter, judging whether the current value of the first counter reaches the first accumulation value, if so, sending an execution instruction to the reduced-power electric appliance confirming module, if not, judging whether all the electric appliances in the group are traversed, if so, removing the selected electric appliance group, and then sending an alarm, and if not, removing the selected electric appliances, and then sending the execution instruction to the monitoring submodule.
Preferably, the power-down electric appliance confirming module includes:
the unit time power consumption reference value determining submodule is used for setting unit time power consumption reference values of all the electric appliances in the observation group according to the average value of the corresponding historical records;
and the target electrical appliance confirming submodule is used for judging whether the power consumption reference values of all electrical appliances in the observation group in unit time exceed the preset bearing power of the current power supply network, if not, removing one electrical appliance with the minimum power consumption, and then judging again until the bearing power of the power supply network is met.
Preferably, the power reduction module comprises:
the reduction amount determining submodule is used for reducing the power of the removed electric appliance according to a preset proportion;
the actual power determining submodule is used for determining the actual power of the electric appliance which is actually connected to the power supply network and the actual power of the electric appliance after a preset time period comes;
and the actual reduction submodule is used for judging the total power difference of the electric appliances and reducing the corresponding electric appliances in the original observation group according to a preset proportion when the total power exceeds the preset bearing power.
Preferably, the power reduction module further comprises:
and the labeling submodule is used for judging the difference of the electrical appliances and adding labels to the electrical appliances which do not appear in the observation group.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a logic flow diagram of an electrical appliance power control method provided by the present invention;
FIG. 2 is a schematic view of a detailed flow chart of S2 in FIG. 1;
FIG. 3 is a schematic view of a detailed flow chart of S3 in FIG. 1;
FIG. 4 is a schematic view of a detailed flow chart of S4 in FIG. 1;
fig. 5 is a schematic diagram of an electrical appliance power control device provided by the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The present invention will be described in detail below by way of examples.
The invention provides a power control method of an electrical appliance, wherein the electrical appliance is connected to or disconnected from a power supply network according to different moments, each electrical appliance is connected with an electrical energy meter, the electrical energy meters are used for detecting the power of the electrical appliance, each electrical energy meter is connected with a controller, the controller is used for carrying out information interaction with the electrical energy meters, and is also used for controlling the electrical appliance to be connected to or disconnected from the power supply network, as shown in figure 1, the method is applied to the controller, and comprises the following steps:
s1: and predicting the electric appliances accessed to the power supply network at the next moment according to the historical power supply network access condition of the preset electric appliances, and listing the predicted accessed electric appliances as an observation group.
Specifically, in the application, the electrical appliance is not always connected to the power supply network, but is intermittently connected to the power supply network according to the time law, and the specific connection rule can be determined according to the connection working time of the electrical appliance. For example, when the limitation of the time length of single use of the electric appliance is considered, the electric appliance cannot be connected into a power supply network all the time, the electric appliance is in a use state, the electric appliance is connected into the power supply network for a period of time and then is disconnected from the power supply network, and the electric appliance cannot be used for a long time due to fatigue. The access mode can be directly determined by a preset access rule, or can be a rule summarized by observing the access use condition of the electric appliance for a long time. In the application, the access condition of the electrical appliance in a certain specific time period in a day can be obtained by summarizing the rules of multiple days, for example, when the month is No. 1, in a preset time period, the electrical appliances connected to the power supply network are electrical appliance 1, electrical appliance 2, electrical appliance 3, electrical appliance 4 and electrical appliance 5, when the month is 2, the electrical appliances connected to the power supply network in the corresponding time period are electrical appliance 2, electrical appliance 3, electrical appliance 4, electrical appliance 5 and electrical appliance 6, when the month is 3, the electrical appliances connected to the power supply network in the corresponding time period are electrical appliance 2, electrical appliance 3, electrical appliance 4, electrical appliance 5 and electrical appliance 7, then, a strategy that the electric appliances which are connected into the power supply network within the corresponding time period of No. 4 are an electric appliance 2, an electric appliance 3, an electric appliance 4 and an electric appliance 5 can be estimated to appear next time if two times of statistics of the last three times appear can be adopted.
S2: and judging the packet loss rate of each electrical appliance in the observation group to ensure that the packet loss rates of a preset number of electrical appliances meet the requirements.
Before reading the actual power consumption condition of the electrical appliances in the observation group, the packet loss rate of each electrical appliance in the observation group needs to be judged, so that the packet loss rate of each electrical appliance is ensured to meet the requirement. If the packet loss rates of all the electrical appliances do not meet the requirements, an alarm is given, and if the packet loss rates of the electrical appliances which reach the preset number meet the requirements, the packet loss rate requirements are determined to be met.
S3: and estimating the power consumption of the electric appliances in the observation group according to the historical records, and determining the electric appliances needing power reduction according to the magnitude relation between the power consumption and the preset bearing power of the power supply network.
And when the total power exceeds the preset bearing capacity, reducing the power of the electrical appliances which are accessed into the power supply network and belong to the original observation group according to a preset proportion. Specifically, the electrical appliance needing power reduction is an electrical appliance which is determined to be smaller in working power according to long-term observation of historical records of the electrical appliance.
S4: and reducing the power of the application electric appliance according to the electric appliance needing power reduction and aiming at the condition of the actually accessed electric appliance.
And when the total power exceeds the preset bearing capacity, reducing the power of the electrical appliances which are accessed into the power supply network and belong to the original observation group according to a preset proportion. The electrical appliances with reduced preset proportional power are determined to be electrical appliances with smaller working power by long-term observation, that is, on the premise that the electrical appliances with smaller working power all participate in power consumption for a long time, the total power still exceeds the preset bearing power, that is, the total power is still higher than the preset bearing power, that is, the electrical appliances with large power which are not removed originally are in working power consumption, or the electrical appliances which are newly connected are in high power consumption, or both of the electrical appliances are in high power consumption, at this time, the electrical appliances which are determined to be required to reduce power need to be subjected to power reduction.
S5: and repeatedly counting the power consumption of the electric appliances actually connected to the power supply network, and detecting the closeness of the counted average power consumption of the electric appliances actually connected to the power supply network to the preset bearing power.
It can be understood that if the electrical appliance is kept in a continuous use state for a period of time, the average power consumed by the electrical appliance will approach a fixed value, and if the user uses the corresponding electrical appliance according to the daily use habit of the user, the calculated average power consumed by the corresponding electrical appliance will gradually approach the preset bearing power along with the increase of the statistical times. In practice, if the trend is trend, the electric appliance operates according to the normal power, and if the trend is not trend, or even the electric appliance is far away, the current use state of the electric appliance is not consistent with the ordinary use state. Specifically, the approximation degree that the average power consumption of each electrical appliance approaches to the corresponding predicted power may be calculated, and then the average value of the approximation degrees of the plurality of electrical appliances may be calculated as the approximation degree of the electrical appliance group. The approach may be calculated in various ways, for example, the distance between the average power consumption distance and the predicted power is defined as 1 within 2%, and the approach value decreases by 20% every 5% away until the approach is 0.
S6: and starting the command polling service, and determining a polling period according to the approach degree.
In this step, a reference polling period is determined, and then, if the proximity of the electrical appliances in one group changes slowly within a preset time, the polling period is set to be longer, and if the proximity of the electrical appliances in one group changes quickly within the preset time, the polling period is set to be shorter, wherein the slow and fast are relative, the preset change duration can be used as a reference for judgment, and the length and the short of the period are also relative, and the preset period value can be used as a reference for judgment. In this application, adopt such polling cycle to set up the mode, the average power consumption power of electrical apparatus that can be timely accurate acquireing change need not set up unified short polling cycle for a long time, when the polling cycle sets up the short-term, though the power consumption information of electrical apparatus of acquireing that can be more accurate, nevertheless can be bigger to the hardware injury of corresponding controller and electric energy meter, hardware equipment resource saturation moves, the condition of overuse appears easily.
S7: and in each polling period, randomly acquiring the actual accumulated energy consumption value of one electrical appliance in the electrical appliances actually connected to the power supply network every time.
After the polling is started, the actual accumulated energy consumption value per unit time of one electrical appliance is randomly acquired each time, and specifically, the actual accumulated energy consumption value per unit time is the accumulated energy consumption value acquired during the polling duration and is divided by the polling duration.
S8: and judging whether the obtained numerical value is larger than the reduced power value or not according to the obtained numerical value, if so, indicating that the current electrical appliance is connected to the power supply network and the load pressure of the power supply network is brought, giving an alarm, and adaptively cutting off the access of the corresponding electrical appliance to the power supply network.
According to the invention, through analyzing the historical use condition of the electric appliance, the electric network overload condition possibly generated in the future time of the electric appliance is pre-judged, and the power of the specific electric appliance is changed through the pre-judged condition, so that the overall load of the power supply network can be reduced, the overall use effect of the electric appliance is not influenced, and the balance of safety and effectiveness is achieved.
Specifically, as shown in fig. 2, the S2 may include:
s21: and aiming at the electric appliances listed in the observation group, randomly determining one electric appliance as a target electric appliance, carrying out communication monitoring, monitoring the connection condition of the electric appliance, and judging whether the connection communication packet loss rate of the target electric appliance is less than a preset value.
The first situation is that although the target electrical appliance may be connected to the power supply network at the "next time", the current time is already connected to the power supply network and normal data detection is performed, and for this situation, the communication situation of the current electrical appliance may be monitored directly; the other situation is that the target electrical appliance is not connected to the power supply network at the current moment, and for the situation, the electric energy meter can send a handshake instruction to the application electrical appliance, and the reply condition of the electrical appliance to the handshake instruction can be monitored directly.
The electric appliances determined randomly in the observation group have larger or smaller actual transmission power consumption values than normal values in the future, so that the binary digits of the transmitted values have larger difference, the electric appliances are marked with a 'transmission unreliable' mark by detecting the transmission packet loss rate of the electric appliances determined randomly under the condition that the transmission data of the electric appliances are not reliable, and then the electric appliances are turned to detect another randomly determined target electric appliance in the group, and when the target electric appliances with preset quantity in the group are marked as 'transmission unreliable', alarm information is sent to a management background. By adopting the method, the resources consumed by the detection of the packet loss rate of the electrical appliance are less, and the packet loss rate of all the electrical appliances is not required to be detected; and the detected electrical appliances are uniformly distributed in total possible energy consumption, the electrical appliances which occupy a large proportion of the total energy consumption are not detected, and the electrical appliances which occupy a small proportion of the total energy consumption are ignored.
S22: and adding 1 to the value of the first counter, judging whether the current value of the first counter reaches a first accumulated value, if so, executing S3, if not, judging whether all the electrical appliances in the group are traversed, if so, removing the selected electrical appliance group, then giving an alarm, if not, removing the selected electrical appliances, and then returning to execute S21.
The number of the first counters is a counter specially set for counting the number of electric appliances with packet loss rates smaller than a preset value, the initial value of the first counter is 0, when the connection communication packet loss rate of a target electric appliance is smaller than the preset value, the transmission reliability of the current standard electric appliance meets the requirement, the accumulated value of the first counter is added by 1, when the count reaches the preset value, most of the electric appliances in the current observation group are credible in transmission, the next operation can be carried out, and if the count does not reach the preset value and all the electric appliances in the current observation group are detected in a traversing manner, the observation group is determined again according to the previous rule. Specifically, if yes, the selected electrical appliance group is removed, and then an alarm is given, which indicates that all the electrical appliances have the possibility of data packet loss.
Specifically, as shown in fig. 3, the S3 may include:
s31: and setting power consumption reference values of all the electrical appliances in the observation group in unit time according to the average value of the corresponding historical records.
For example, the power consumption reference value per unit time of the entire electrical appliances in the observation group is determined according to the average value of the historical power consumption records of the electrical appliances. Specifically, for each electrical appliance entering the selected observation group, the power consumption average value corresponding to the total power consumption in the corresponding time in history is determined, and the average values are summed to obtain the power consumption reference value of all the electrical appliances in unit time.
Specifically, the historical electricity consumption law may be counted for each electrical appliance, for example, for an electrical appliance such as "first air conditioner in a factory building", the total electricity consumption of the electrical appliance at different periods is counted and stored, and for example, the electricity consumption of each half hour is accumulated from 0 point every day, so that the electricity consumption of the period can be obtained as long as a specific time period is given. When the statistics is performed for a plurality of times, such as a month statistics, the usage of the electric appliance, namely the "first air conditioner in the factory building" by the user every day in the counted time of a month can be roughly known, and it can be understood that when the minimum scale of the statistics is small enough, for example, the statistics is performed once every 10 minutes, the total power consumption of the electric appliance in a more specific time period can be more accurately obtained. Or taking "the first air conditioner in the factory building" as an example, if the air conditioner is installed in the factory building for the first time, that is, if the corresponding steps of the application are to be executed, the relevant statistical information of the total power consumption of the electrical appliance in history cannot be obtained, the use condition similar to the television use rule can be recommended to the user through the human-computer interaction client interface for the user to select. For example, if the factory building is a night duty factory building, a worker usually works 8 am to 5 am, the worker does not use the factory building in the time period, the worker does not use the corresponding air conditioner, the factory building can be used from 6 pm to 5 pm in the time period, the worker in charge of recording can manually select the time for watching the air conditioner to be used from 6 pm to 5 pm through a human-computer interaction client interface, the human-computer interaction client is further connected with a remote server, the remote server stores running power information of the air conditioners of different brands and models for a user to select, and the user can select the air conditioner of the corresponding brand model through the human-computer interaction interface, so that the total power consumption value of the air conditioner in any time period can be automatically calculated, and the calculated total power consumption value is used as the total power consumption of the air conditioner in different periods.
If the total power consumption predicted value of each electrical appliance in the starting process of the time is to be predicted, the current time point can be determined, then the historical record is used for calling the electrical appliance stopping time point which is closest to the current time point and is later than the current time point every day in a previous month, the average value of the time points is calculated, the calculated average value time point is used as the predicted stopping time point, and then the power consumption between the current time point and the predicted stopping time point in the history is called, and the average value is used as the total power consumption predicted value in the starting process of the time after the average value is obtained.
S32: and judging whether the power consumption reference values of all the electric appliances in the observation group in unit time exceed the preset bearing power of the current power supply network, if not, removing one electric appliance with the minimum power consumption, and then judging again until the bearing power of the power supply network is met.
The preset bearing power is a power consumption power determined according to the power consumption power of the electrical appliance accessed to the power supply network at the historical moment, for example, the preset bearing power is 1.5 times of the average value of the power consumption power of the electrical appliance accessed to the power supply network at the historical moment.
Specifically, as shown in fig. 4, the S4 may include:
s41: and aiming at the removed electric appliances, reducing the power of the electric appliances according to a preset proportion.
According to the removal rule, the removed electrical appliances are the electrical appliances with the minimum power consumption which are kept at present, namely, for the electrical appliances of the type, the power is further reduced in time, the work of the total electrical appliances is not greatly influenced, and the electrical appliances are very useful for equipment such as a factory air conditioner. It can be understood that, when the air conditioner is in operation, the basic functions of maintaining the operation of the fan and the operation of the compressor are to consume a certain amount of energy, and the existence of the necessary energy consumption can cause the operation of the air conditioner to have a certain critical point, when the power of the air conditioner is greater than a critical point, the cooling effect can be further improved along with the increase of the power, and when the power of the air conditioner is less than the critical point, the cooling effect of the air conditioner can be greatly reduced even if a small amount of power is reduced.
Because of this phenomenon, the power and the cooling effect of the air conditioner do not tend to change linearly, and when the total power that can be provided by the power supply network is constant, it is not desirable to reduce the power of the air conditioner that originally consumes more power, because such a small reduction in power may result in an air conditioner that originally has an excellent cooling effect, and the resulting cooling effect is too poor, that is, if the degradation of the cooling effect that matches the reduced power is acceptable, but the non-linear degradation of the cooling effect is not proportional to the reduced power, and is unacceptable, and due to the characteristics of each air conditioner, the degradation is also unpredictable. Therefore, when the power needs to be reduced, the air conditioner with lower power (preferably the lowest power) is preferentially selected for reducing the power, and it can be understood that the power of the air conditioner with lower power is further reduced according to the preset proportion, so that the influence on the refrigeration effect of the whole air conditioning unit is minimum.
S42: and after the preset time period comes, determining the electric appliances actually connected to the power supply network and the actual power of the electric appliances.
Before the step, the estimated electric appliance group is calculated, the actually accessed electric appliance may be different from the estimated electric appliance group, and in the step, the electric appliance actually accessed to the power supply network and the actual power thereof are determined in the preset time so as to judge the next step.
S43: and judging the total power difference of the electric appliances, and reducing the corresponding electric appliances in the original observation group according to a preset proportion when the total power exceeds a preset bearing power.
And when the total power exceeds the preset bearing capacity, reducing the power of the electrical appliances which are accessed into the power supply network and belong to the original observation group according to a preset proportion. The electrical appliances with reduced preset proportional power are determined to be electrical appliances with smaller working power by long-term observation, namely, under the premise that the electrical appliances with smaller long-term working power all participate in power consumption, the total power still exceeds the preset bearing power, namely, the electrical appliances with large power which are not removed are indicated to be in working power consumption, or the electrical appliances which are newly connected are in high power consumption, or both the electrical appliances are in high power consumption, according to the reason analysis, the electrical appliances which are connected into the power supply network and belong to the original observation group still need to be subjected to power reduction according to the preset proportion, so that the load of the power supply network is reduced as much as possible on the premise that the total working capacity of the electrical appliances is not changed greatly.
Further, before performing S43, the method further includes:
s43': and judging the difference of the electrical appliances, and adding labels to the electrical appliances which do not appear in the observation group.
The electrical equipment which is accessed to the power supply network but does not appear in the estimated observation group is marked, because the marked electrical equipment exists, the original estimation is not accurate, the estimation rule needs to be corrected, the number of the marked electrical equipment accessed to the power supply network is increased, namely, for one electrical equipment, the number of the marked electrical equipment is more for a preset time period, the probability that the electrical equipment enters the observation group is higher when the electrical equipment accessed to the preset time period is estimated, and the method can be adopted as follows: if a certain electric appliance is not selected according to the selection rule, a subset which is linearly and positively correlated with the mark number and is in the [0,1] interval is set for the electric appliance, the subset is called a selection subset, the selection subsets of all the unselected electric appliances are not intersected, the union set of the selection subsets is [0,1], then equal-probability random numbers in the [0,1] interval are generated, and the electric appliance corresponding to the selection subset in which the random numbers are located is selected as the electric appliance of the selected observation group.
The invention also provides a power control device for electrical appliances, wherein the electrical appliances are connected to or disconnected from a power supply network according to different moments, each electrical appliance is connected with an electrical energy meter, the electrical energy meters are used for detecting the power of the electrical appliances, each electrical energy meter is connected with a controller, the controller is used for performing information interaction with the electrical energy meters and controlling the electrical appliances to be connected to or disconnected from the power supply network, and the device is applied to the controller as shown in fig. 5, and comprises:
and the observation group determining module is used for predicting the electric appliances accessed to the power supply network at the next moment according to the historical power supply network access conditions of the preset electric appliances and listing the predicted accessed electric appliances as the observation group as a whole.
And the packet loss rate detection module is used for judging the packet loss rate of each electrical appliance in the observation group and ensuring that the packet loss rates of a preset number of electrical appliances meet the requirements.
And the power-reducing electric appliance confirming module is used for predicting the power consumption of the electric appliances in the observation group according to the historical record and determining the electric appliances needing power reduction according to the magnitude relation between the power consumption and the preset bearing power of the power supply network.
And the power reduction module is used for reducing the power of the electric appliance according to the requirement, and reducing the power of the applied electric appliance according to the condition of the actually accessed electric appliance.
And the approach degree determining module is used for repeatedly counting the power consumption of the electrical appliances actually connected to the power supply network and detecting the approach degree of the counted average power consumption power of the electrical appliances actually connected to the power supply network compared with the preset bearing power.
And the polling period determining module is used for starting the instruction polling service and determining the polling period according to the approach degree.
And the unit time accumulated energy consumption statistical module is used for randomly acquiring the actual unit time accumulated energy consumption value of one electrical appliance in the electrical appliances actually connected to the power supply network every time in each polling period.
And the early warning module is used for judging whether the obtained numerical value is larger than the reduced power value or not, if so, indicating that the current electrical appliance is connected to the power supply network and can bring the load pressure of the power supply network, giving an alarm and adaptively cutting off the corresponding electrical appliance to be connected to the power supply network.
Specifically, the packet loss rate detection module may include:
and the monitoring submodule is used for randomly determining one electric appliance as a target electric appliance aiming at the electric appliances listed in the observation group, carrying out communication monitoring, monitoring the connection condition of the electric appliances, and judging whether the connection communication packet loss rate of the target electric appliance is less than a preset value or not.
And the accumulation submodule is used for adding 1 to the value of the first counter, judging whether the current value of the first counter reaches the first accumulation value, if so, sending an execution instruction to the reduced-power electric appliance confirming module, if not, judging whether all the electric appliances in the group are traversed, if so, removing the selected electric appliance group, and then sending an alarm, and if not, removing the selected electric appliances, and then sending the execution instruction to the monitoring submodule.
Specifically, the power-down electrical appliance confirming module may include:
and the unit time power consumption reference value determining submodule is used for setting the unit time power consumption reference values of all the electrical appliances in the observation group according to the average value of the corresponding historical records.
And the target electrical appliance confirming submodule is used for judging whether the power consumption reference values of all electrical appliances in the observation group in unit time exceed the preset bearing power of the current power supply network, if not, removing one electrical appliance with the minimum power consumption, and then judging again until the bearing power of the power supply network is met.
Specifically, the power reduction module may include:
and the reduction amount determining submodule is used for reducing the power of the removed electrical appliances according to a preset proportion.
And the actual power determining submodule is used for determining the actual power of the electric appliance actually connected to the power supply network and the actual power of the electric appliance after a preset time period comes.
And the actual reduction submodule is used for judging the total power difference of the electric appliances and reducing the corresponding electric appliances in the original observation group according to a preset proportion when the total power exceeds the preset bearing power.
Further, the power reduction module further comprises:
and the labeling submodule is used for judging the difference of the electrical appliances and adding labels to the electrical appliances which do not appear in the observation group.
The electrical equipment which is accessed to the power supply network but does not appear in the estimated observation group is marked, because the marked electrical equipment exists, the original estimation is not accurate, the estimation rule needs to be corrected, the number of the marked electrical equipment accessed to the power supply network is increased, namely, for one electrical equipment, the number of the marked electrical equipment is more for a preset time period, the probability that the electrical equipment enters the observation group is higher when the electrical equipment accessed to the preset time period is estimated, and the method can be adopted as follows: if a certain electric appliance is not selected according to the selection rule, a subset which is linearly and positively correlated with the mark number and is in the [0,1] interval is set for the electric appliance, the subset is called a selection subset, the selection subsets of all the unselected electric appliances are not intersected, the union set of the selection subsets is [0,1], then equal-probability random numbers in the [0,1] interval are generated, and the electric appliance corresponding to the selection subset in which the random numbers are located is selected as the electric appliance of the selected observation group.
According to the invention, through analyzing the historical use condition of the electric appliance, the electric network overload condition possibly generated in the future time of the electric appliance is pre-judged, and the power of the specific electric appliance is changed through the pre-judged condition, so that the overall load of the power supply network can be reduced, the overall use effect of the electric appliance is not influenced, and the balance of safety and effectiveness is achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention. It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the device-like embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A power control method for electrical appliances, wherein the electrical appliances are connected to or disconnected from a power supply network according to different moments, each electrical appliance is connected with an electrical energy meter, the electrical energy meters are used for detecting the power of the electrical appliances, each electrical energy meter is connected with a controller, the controller is used for carrying out information interaction with the electrical energy meters, and is also used for controlling the electrical appliances to be connected to or disconnected from the power supply network, the method is applied to the controller, and the method comprises the following steps:
s1: estimating electric appliances accessed to the power supply network at the next moment according to the historical power supply network access condition of a preset electric appliance, and listing the estimated accessed electric appliances as an observation group;
s2: judging the packet loss rate of each electrical appliance in the observation group to ensure that the packet loss rates of a preset number of electrical appliances meet the requirements;
s3: estimating the power consumption of the electric appliances in the observation group according to the historical records, and determining the electric appliances needing power reduction according to the magnitude relation between the power consumption and the preset bearing power of the power supply network;
s4: according to the electric appliance needing power reduction, power reduction is carried out on the application electric appliance aiming at the condition of the actually accessed electric appliance;
s5: repeatedly counting the power consumption of the electric appliances actually connected to the power supply network, and detecting the approach degree of the counted average power consumption of the electric appliances actually connected to the power supply network to the preset bearing power;
s6: starting command polling service, and determining a polling period according to the approach degree;
s7: in each polling period, randomly acquiring the actual accumulated energy consumption value of one electrical appliance in the electrical appliances actually connected to the power supply network in unit time each time;
s8: and judging whether the obtained numerical value is larger than the reduced power value or not according to the obtained numerical value, if so, indicating that the current electrical appliance is connected to the power supply network and the load pressure of the power supply network is brought, giving an alarm, and adaptively cutting off the access of the corresponding electrical appliance to the power supply network.
2. The method according to claim 1, wherein the S2 includes:
s21: randomly determining an electric appliance as a target electric appliance for the electric appliances listed in the observation group, performing communication monitoring, monitoring the connection condition of the electric appliances, and judging whether the connection communication packet loss rate of the target electric appliance is less than a preset value;
s22: and adding 1 to the value of the first counter, judging whether the current value of the first counter reaches a first accumulated value, if so, executing S3, if not, judging whether all the electrical appliances in the group are traversed, if so, removing the selected electrical appliance group, then giving an alarm, if not, removing the selected electrical appliances, and then returning to execute S21.
3. The method according to claim 1, wherein the S3 comprises:
s31: setting power consumption reference values of all electrical appliances in the observation group in unit time according to the average value of the corresponding historical records;
s32: and judging whether the power consumption reference values of all the electric appliances in the observation group in unit time exceed the preset bearing power of the current power supply network, if not, removing one electric appliance with the minimum power consumption, and then judging again until the bearing power of the power supply network is met.
4. The method according to claim 1, wherein the S4 comprises:
s41: reducing the power of the removed electrical appliances according to a preset proportion;
s42: after a preset time period comes, determining the actual power of the electric appliance actually connected to the power supply network and the actual power of the electric appliance;
s43: and judging the total power difference of the electric appliances, and reducing the corresponding electric appliances in the original observation group according to a preset proportion when the total power exceeds a preset bearing power.
5. The method of claim 4, further comprising, prior to performing S43:
s43': and judging the difference of the electrical appliances, and adding labels to the electrical appliances which do not appear in the observation group.
6. An electrical appliance power control device, wherein electrical appliances are connected to or disconnected from a power supply network according to different moments, each electrical appliance is connected with an electrical energy meter, the electrical energy meters are used for detecting the power of the electrical appliances, each electrical energy meter is connected with a controller, the controller is used for performing information interaction with the electrical energy meters, and is also used for controlling the electrical appliances to be connected to or disconnected from the power supply network, as shown in fig. 5, and the device is applied to a controller and comprises:
the observation group determining module is used for predicting the electric appliances accessed to the power supply network at the next moment according to the historical power supply network access condition of the preset electric appliances and listing the predicted accessed electric appliances as an observation group;
the packet loss rate detection module is used for judging the packet loss rate of each electrical appliance in the observation group to ensure that the packet loss rates of a preset number of electrical appliances meet the requirements;
the power-reducing electric appliance confirming module is used for predicting the power consumption of electric appliances in the observation group according to the historical record and confirming the electric appliances needing power reduction according to the magnitude relation between the power consumption and the preset bearing power of the power supply network;
the power reduction module is used for reducing the power of the electric appliance according to the electric appliance needing to be powered down, and reducing the power of the applied electric appliance according to the condition of the actually accessed electric appliance;
the approach degree determining module is used for repeatedly counting the power consumption of the electric appliances actually connected to the power supply network and detecting the approach degree of the counted average power consumption power of the electric appliances actually connected to the power supply network compared with the preset bearing power;
the polling cycle determining module is used for starting the instruction polling service and determining a polling cycle according to the approach degree;
the unit time accumulated energy consumption statistical module is used for randomly acquiring the actual unit time accumulated energy consumption value of one electric appliance in the electric appliances actually connected to the power supply network in each polling period;
and the early warning module is used for judging whether the obtained numerical value is larger than the reduced power value or not, if so, indicating that the current electrical appliance is connected to the power supply network and can bring the load pressure of the power supply network, giving an alarm and adaptively cutting off the corresponding electrical appliance to be connected to the power supply network.
7. The module according to claim 6, wherein said packet loss rate detection module comprises:
the monitoring submodule is used for randomly determining one electric appliance as a target electric appliance aiming at the electric appliances listed in the observation group, carrying out communication monitoring, monitoring the connection condition of the electric appliances, and judging whether the connection communication packet loss rate of the target electric appliance is smaller than a preset value or not;
and the accumulation submodule is used for adding 1 to the value of the first counter, judging whether the current value of the first counter reaches the first accumulation value, if so, sending an execution instruction to the reduced-power electric appliance confirming module, if not, judging whether all the electric appliances in the group are traversed, if so, removing the selected electric appliance group, and then sending an alarm, and if not, removing the selected electric appliances, and then sending the execution instruction to the monitoring submodule.
8. The module of claim 6, wherein the power down consumer validation module comprises:
the unit time power consumption reference value determining submodule is used for setting unit time power consumption reference values of all the electric appliances in the observation group according to the average value of the corresponding historical records;
and the target electrical appliance confirming submodule is used for judging whether the power consumption reference values of all electrical appliances in the observation group in unit time exceed the preset bearing power of the current power supply network, if not, removing one electrical appliance with the minimum power consumption, and then judging again until the bearing power of the power supply network is met.
9. The module of claim 6, wherein the power reduction module comprises:
the reduction amount determining submodule is used for reducing the power of the removed electric appliance according to a preset proportion;
the actual power determining submodule is used for determining the actual power of the electric appliance which is actually connected to the power supply network and the actual power of the electric appliance after a preset time period comes;
and the actual reduction submodule is used for judging the total power difference of the electric appliances and reducing the corresponding electric appliances in the original observation group according to a preset proportion when the total power exceeds the preset bearing power.
10. The module of claim 9, wherein the power reduction module further comprises:
and the labeling submodule is used for judging the difference of the electrical appliances and adding labels to the electrical appliances which do not appear in the observation group.
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