CN104750054B

CN104750054B - A kind of power consumption control device and method

Info

Publication number: CN104750054B
Application number: CN201310753271.XA
Authority: CN
Inventors: 刘松; 刘鹏; 古博; 刘江
Original assignee: North China Electric Power University
Current assignee: North China Electric Power University
Priority date: 2013-12-31
Filing date: 2013-12-31
Publication date: 2017-11-24
Anticipated expiration: 2033-12-31
Also published as: CN104750054A

Abstract

The invention discloses a kind of power consumption control device and method, signal meter, the controller are given by the communications interface transmission for measuring and calculating each Household Appliance information in the household electrical appliance all accessed, and by measurement result；The communication interface, for the measurement result of the signal meter to be transferred into controller；The controller, the sensitivity for docking electricity according to household electrical appliance enter classification to the household electrical appliance all accessed；According to classification results, and the measurement result of signal meter transmission, it is determined that access preferred value corresponding to the household electrical appliance of each classification；And according to the access preferred value, it is determined that the control strategy for each household electrical appliance；Electricity consumption according to whole household electrical appliance of the control strategy to being currently accessed is controlled.It is capable of the power program of dynamic generation household electrical appliance, adjusts the operational mode of household electrical appliance in real time, so as to rationally and effectively uses electric energy.

Description

Power utilization control equipment and method

Technical Field

The invention relates to the technical field of power application, in particular to power utilization control equipment and a power utilization control method.

Background

Along with the continuous promotion of intellectualization of power grids in links such as power transmission, power transformation, power distribution, power utilization and the like, the intellectualization of the electricity consumption of residents is gradually promoted, wherein the intellectualization management and control of household appliances are key factors of the intellectualization of the electricity consumption of residents.

The intelligent power utilization is based on intelligent power grids and modern management concepts, and by means of the technologies of advanced measurement, efficient control, high-speed communication, rapid energy storage and the like, the novel power utilization relation that the intelligent power grids interact with power flow, information flow and service flow of power users in real time is established, and the novel power utilization relation is rapid in market response, fair and accurate in measurement, various in data real-time collection and charging modes and efficient and convenient in service.

At present, intelligent power utilization control of household appliances is mainly realized through a preset static time schedule or a preset power utilization strategy, the situation of dynamic change cannot be met, particularly, when a new household appliance is connected, the running mode of the household appliance cannot be adjusted in real time according to the change of power utilization load, and electric energy cannot be reasonably and effectively used.

Disclosure of Invention

The invention provides a power utilization control device and method, which can dynamically generate a power utilization scheme of a household appliance and adjust the running mode of the household appliance in real time, thereby reasonably and effectively using electric energy.

The device is applied to power utilization control of household appliances and comprises a controller, a signal meter and a communication interface, wherein the controller, the signal meter and the communication interface are connected through a bus to transmit data, the signal meter is used for measuring and calculating power utilization information of each household appliance in all the connected household appliances and transmitting the measurement result to the controller through the communication interface; the communication interface is used for transmitting the measurement result of the signal meter to a controller; the controller is used for classifying all the connected household appliances according to the sensitivity of the household appliances to power connection; determining an access priority value corresponding to each category of household appliances according to the classification result and the measurement result transmitted by the signal meter; determining a control strategy for each household appliance according to the access priority value; and controlling the power consumption of all the currently accessed household appliances according to the control strategy.

A power utilization control method is applied to power utilization control of household appliances and comprises the following steps: classifying all the accessed household appliances according to the sensitivity of the household appliances to power connection; measuring and calculating the electricity utilization information of each household appliance in all the accessed household appliances; determining an access priority value corresponding to each category of household appliances according to the classification result and the electricity utilization information; determining a control strategy for each household appliance according to the access priority value; and controlling the electricity consumption of the currently accessed household appliance according to the control strategy.

According to the technical scheme provided by the invention, the intelligent power utilization control is not based on a preset static time table or a preset power utilization strategy, but dynamically generates a control strategy, and adjusts the operation mode of each household appliance in real time, so that the dynamic change condition of the household appliance can be corresponded, and the electric energy can be more effectively used.

Drawings

Fig. 1 is a schematic structural diagram of an electric control apparatus according to a first embodiment of the present invention;

fig. 2 is a flowchart of an electricity consumption control method according to a second embodiment of the present invention.

Detailed Description

The embodiment of the invention provides a technical scheme which is used for measuring and calculating the power utilization information of each household appliance, classifying the household appliances, determining the corresponding access priority value of each type of household appliance according to the classification result and the power utilization information of each household appliance and finally determining the corresponding control strategy according to the access priority value. According to the technical scheme provided by the invention, the intelligent power utilization control is not based on a preset static time table or a preset power utilization strategy, but dynamically generates a control strategy, and adjusts the operation mode of each household appliance in real time, so that the dynamic change condition of the household appliance can be corresponded, and the electric energy can be more effectively used.

The main implementation principle, the specific implementation mode and the corresponding beneficial effects of the technical solution of the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Example one

An embodiment of the present invention provides an electricity utilization control device, which is applied to electricity utilization control of a household appliance, and as shown in fig. 1, the electricity utilization control device includes a controller 11, a signal meter 12 and a communication interface 13, where the controller 11, the signal meter 12 and the communication interface 13 are connected in pairs by a bus 14, and transmit data by the connected bus 14, where:

and the controller 11 is used for classifying all the connected household appliances according to the sensitivity of the household appliances to power connection.

The controller 11 may be a Central Processing Unit (CPU), or a combination of a CPU and a hardware chip may also be a Network Processor (NP). Or a combination of a CPU and an NP, or a combination of an NP and a hardware chip.

The hardware chip can be one or more of the following combinations: application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), Complex Programmable Logic Devices (CPLDs).

Alternatively, in the case where the controller 11 is a CPU or a combination including a CPU, the apparatus may further include a memory for storing program codes, and the controller obtains the stored program codes from the memory and executes corresponding processing in accordance with the obtained program agent. The memory may be a volatile memory (such as a random-access memory (RAM); or a non-volatile memory (english: non-volatile memory), such as a flash memory (english: flash memory), a hard disk (english: hard disk drive, abbreviated: HDD) or a solid-state drive (english: solid-state drive, abbreviated: SSD); or a combination of the above types of memories.

The controller 11 may also be a comparator with a comparison function, and the comparator may be in the form of a chip or may be implemented in the form of a circuit.

The controller 11 may classify all the connected home appliances according to their sensitivity to the continuity of the power supply or the adjustability of the power supply of the home appliances. For example, if the four home appliances are classified according to their sensitivity to the continuity of power supply, the notebook computer, the air conditioner and the refrigerator may be powered discontinuously, and the blower needs to be powered continuously, assuming that the currently connected home appliances include the notebook computer, the blower, the air conditioner and the refrigerator. If classified according to the adjustability of the supply power, the power of the blower, the air conditioner can be adjusted, while the power of the notebook computer and the refrigerator cannot be adjusted. Therefore, the controller 11 stores a list of home appliances in advance, and all the common home appliances are classified into one of the following four categories:

the first category: a continuously powered, power-regulated household appliance is necessary.

The second category: the household appliance must be continuously powered and has non-adjustable power.

The third category: the power supply can be interrupted, and the power of the household appliance can be adjusted.

The fourth type: the power supply can be interrupted, and the power of the household appliance is not adjustable.

And a signal meter 12 for measuring and calculating power consumption information of each of all the connected home appliances, and transmitting the measurement result to the controller 11 through the communication interface 13.

The signal meter 12 can measure the power consumption information of the household appliance, and may include voltage, current, active power, reactive power, power factor, frequency, starting time of operation of the household appliance, duration of use of the household appliance, on/off state of the household appliance, and operating temperature of the household appliance, etc.

The signal meter 12 may also record the operation state and operation data of the household appliance, and may receive the control strategy sent by the controller 11 to restore the power supply to the household appliance in the power-off state or power off the household appliance in the power-on state.

The signal meter 12 may also transmit the operation data and the operation state of the home appliance recorded for a set time period to the controller 11.

The controller 11 may receive the operation data and the operation state of the household appliances recorded within the set time period transmitted by the signal meter, perform statistical analysis according to the operation data and the operation state of the household appliances recorded within the set time period, determine the usage habits of the user on the household appliances, and establish a usage state model of the household appliances within the next set time period.

And a communication interface 13 for transmitting the measurement result of the signal meter 12 to the controller 11.

The communication interface 13 is provided with a communication module and an interface chip. So that the communication interface 13 may use a variety of different physical channels. The communication interface may transmit data by wired communication, for example, by general wired communication methods such as PLC, cable, twisted pair, etc. Data can also be transmitted by adopting a wireless communication mode, for example, the data can be transmitted by a carrier communication mode, an infrared mode, a Bluetooth mode, a ZigBee mode, a WiFi mode, a WiMAX mode, a GSM mode, a 3G mode, a 4G mode and other general wireless communication modes.

Accordingly, the chip in the communication interface may be a Network Interface Controller (NIC) providing a wired interface, such as an ethernet NIC, which may provide a copper wire and/or optical fiber interface; a NIC providing a wireless interface, such as a Wireless Local Area Network (WLAN) NIC.

The controller 11 classifies all the connected household appliances according to the sensitivity of the household appliances to power connection; determining an access priority value corresponding to each category of household appliances according to the classification result and the measurement result transmitted by the signal meter 12; determining a control strategy for each household appliance according to the access priority value; and controlling the power consumption of all the currently accessed household appliances according to the control strategy.

Specifically, the controller 11 is specifically configured to determine an access priority value corresponding to each category of household appliances:

for the power adjustable household appliance i, the lower limit and the upper limit of the power adjusting range are respectively assumed to beAndits access priority valueThe calculation formula is as follows:

wherein the variable p is the actual power actually loaded on the household appliance i, a is the sensitivity of the priority value of the household appliance to the power variation, different household appliances have relatively fixed sensitivity degrees, a in the above formula,The home appliances are preset and stored in the controller 11 according to different manufacturers, different models and different types of home appliances.

If the household appliance i is a household appliance with the power not adjustable, the corresponding access priority value PR_i ^pDetermined according to the following equation 2:

for interruptible power supply household appliance j, assume that its power supply interruption time isThe time when the household appliance must be powered isThen the corresponding access priority value of the household applianceCan be determined according to the following equation 3:

for interruptible power supply household appliance j, assume that its power supply starting time isCan be that the power-off time isThe access priority value of the home applianceCan be determined according to the following equation 4:

wherein in the above formulas 3 and 4, variables t and t 'are the current actual time, b is the sensitivity of the priority value of the household appliance to the change of the power supply interruption time, b' is the sensitivity of the priority value of the household appliance to the change according to the change of the power supply time after the household appliance is powered on, different household appliances have relatively fixed sensitivity degrees,andthe power-off and power-on operation time of the household appliance can be obtained by recording the power-off and power-on operation time of the controller 11, the power-off and power-on operation time can be preset and stored in the controller 11 according to the power-off and power-on periods of the household appliances of different manufacturers, different models and different types, and the power-off and power-on periods can be calculated according to the power-off and power-on periods of the household appliances of different manufacturers, different models andand

for the above formulas 3 and 4, the access priority values corresponding to the household appliances capable of interrupting power supply are determined, but the determination manners are not completely the same, where the formula 3 is the access priority value corresponding to the household appliances capable of interrupting power supply after power failure, and the formula 4 is the access priority value corresponding to the household appliances capable of interrupting power supply when power failure occurs.

If the household appliance j is the household appliance which can not interrupt power supply, the corresponding access priority value is as follows:

the newly connected household appliance k is assigned to one of the four types according to the type, and the calculation formula of the connection priority value is shown in the following formula 5.

Wherein, PR_kIs the value of the access priority and,the access priority value corresponding to the household appliance with adjustable power can be obtained through the formula 1;the access priority value corresponding to the household appliance which can interrupt power supply can be obtained according to the formula 3 or the formula 4.

For example, for household appliances with interruptible power supply, such as a laptop with a storage battery, a water heater, a washing machine and the like, the access priority value can be calculated according to the power-off time, and the priority value is the highest value 1 when the longest power-off time is exceeded, and the priority values in other ranges are continuously or discretely changed to the lowest value 0.

For example, for household appliances which need to be continuously powered and have non-adjustable power, the access priority value corresponding to each category of household appliances can be determined as follows:

wherein k is household appliance, PR_kIs the value of the access priority and,the access priority value corresponding to the household appliance with the power not adjustable;the access priority value is corresponding to the household appliance which can not interrupt power supply.

And the controller 11 is used for determining a control strategy for each household appliance according to the household appliance classification result and the access priority value.

The specific implementation mode is as follows:

the first mode is as follows: the control strategy is that the total power of all household appliances does not exceed the set power upper limit value.

In this way, when the control strategy is that the total power of all the household appliances does not exceed the set power upper limit value, the judgment condition is that after a new household appliance is accessed, whether the total power value of all the household appliances is less than or equal to the set power upper limit value is determined. When the judgment condition is yes, no special control is needed, when the judgment condition is no, whether the adjustable household appliance set is empty is judged, and if not, the household appliance with the lowest access priority value is selected.

Further, aiming at the condition that the household appliance is a household appliance with adjustable power and the current working power of the household appliance is larger than the lower power limit of the household appliance, the difference value between the current power and the lower power limit is compared with the power value required to be reduced when the judgment condition meets the control strategy, the minimum value of the current power and the lower power is taken, and the working power of the household appliance is adjusted to be reduced by the minimum value. And then, recalculating the access priority values of all the household appliances according to the included priority value calculation formula.

If the household appliance is a household appliance with an adjustable power or the current working power of the household appliance is less than or equal to the lower power limit of the household appliance, whether the household appliance is a household appliance with an interruptible power supply is judged, and if the household appliance is the household appliance with the interruptible power supply, the household appliance is powered off according to the type of household appliance power-off period prestored by the controller 11. And after the power-off period is ended, recalculating the access priority values of all the household appliances according to the access priority value calculation formula.

After a certain household appliance is removed from the household appliance set, when whether the total power of all the remaining household appliances exceeds the set power upper limit value needs to be recalculated, and the control is performed again according to the calculation result and the control strategy.

The second mode is as follows: the control strategy is that the accumulated power consumption does not exceed the set power consumption within the preset time.

In this way, when the control policy is that the accumulated power consumption does not exceed the set power consumption within the preset time period, the judgment condition is that after a new household appliance is accessed, it is determined whether the accumulated total power consumption of all household appliances within the preset time period is less than or equal to the set power consumption. When the judgment condition is yes, no special control is required. And when the judgment condition is negative, judging whether the adjustable household appliance set is empty, and if not, selecting the household appliance with the lowest access priority value.

Further, aiming at the condition that the household appliance is a household appliance with adjustable power and the current working power of the household appliance is larger than the lower power limit of the household appliance, the difference value between the current power and the lower power limit is compared with the power value required to be reduced when the judgment condition meets the control strategy, the minimum value of the current power and the lower power is taken, and the working power of the household appliance is adjusted to be reduced by the minimum value. And further, recalculating the access priority values of all the household appliances according to the accounting priority value calculation formula.

Further, in the four manners, after a certain household appliance is removed from the set of household appliances, when it is necessary to recalculate whether the total power of all the remaining household appliances exceeds the set power upper limit value, the calculation is performed according to the four manners according to the calculation result.

Alternatively, the communication interface 13 may also receive a forced operation instruction sent by a user to force the household appliance to be turned on or off arbitrarily, and send the received forced operation instruction to the controller 11. The controller 11 may be further configured to turn on or turn off the household appliance corresponding to the forced operation instruction according to the received forced operation instruction, and determine to update the power consumption state change information of all the household appliances.

The user may perform a forced operation on any one of all the home appliances, for example, forcibly turn off a certain home appliance, and when the communication interface 11 receives a forced operation instruction sent by the user, the communication interface may preferentially process the home appliance corresponding to the forced operation instruction according to the current power consumption status of all the home appliances.

Optionally, the communication interface 13 may be further configured to receive a household appliance operation instruction sent by a user through remote control, and send the received household appliance operation instruction to the controller 11. The controller 11 may be further configured to control a home appliance corresponding to the home appliance operation instruction.

Under the condition, the communication interface can communicate with the community service master station and the collection master station of the power supply department, receive remote setting of the community management department or the power supply department at special moments such as disasters and power utilization peaks, or receive the operation instructions of the household appliances sent by users, the community management department or the power supply department remotely, and realize intelligent power utilization control in a wide scale.

Example two

The second embodiment of the present invention provides an electricity utilization control method, as shown in fig. 2, the specific processing flow is as follows:

and step 21, classifying all the accessed household appliances according to the sensitivity of the household appliances to power connection.

All connected household appliances can be classified according to their sensitivity to the continuity of the supply of power or according to their adjustability of the supply power. For example, if the four home appliances are classified according to their sensitivity to the continuity of power supply, the notebook computer, the air conditioner and the refrigerator may be powered discontinuously, and the blower needs to be powered continuously, assuming that the currently connected home appliances include the notebook computer, the blower, the air conditioner and the refrigerator. If classified according to the adjustability of the supply power, the power of the blower, the air conditioner can be adjusted, while the power of the notebook computer and the refrigerator cannot be adjusted. Therefore, a list of home appliances is pre-stored, all common home appliances are classified into one of the following four categories:

Specifically, please refer to the detailed description of the first embodiment, for a specific implementation manner of classifying the home appliances, which is not described again in the second embodiment of the present invention.

And step 22, measuring and calculating the electricity utilization information of each household appliance in all the accessed household appliances.

The electricity consumption information of the household appliance can be measured, and can include voltage, current, active power, reactive power, power factor, frequency, starting time of operation of the household appliance, service life of the household appliance, on/off state of the household appliance, operating temperature of the household appliance and the like.

It should be noted that, in the above step 21 and step 22, only a preferred implementation manner of the second embodiment of the present invention is described in detail, in a specific implementation, the step 21 and the step 22 are not executed in a strict order, that is, the step 22 may be executed first, and then the step 21 is executed.

And step 23, determining the access priority value corresponding to the household appliances of each category according to the classification result and the measurement result.

The access priority value corresponding to each category of household appliances after the new household appliance is accessed can be determined according to the following modes:

where the variable p is the actual power actually applied to the household appliance i and a is the household applianceThe sensitivity of the priority value of the electric appliance to the power change, different household appliances have relatively fixed sensitivity degrees, a and b in the formula,The home appliances are preset and stored in the controller 11 according to different manufacturers, different models and different types of home appliances.

If the household appliance i is a household appliance with the power not adjustable, the corresponding access priority valueDetermined according to the following equation 2:

If the household appliance j is a household appliance whose power supply can not be interrupted, then

The newly connected home appliance k is assigned to one of the four types according to the type, and a priority value calculation formula thereof is shown in the following formula 5.

And step 24, determining a control strategy for each household appliance according to the access priority value.

The specific implementation mode is as follows:

And if the household appliance is the household appliance with the interruptable power supply, carrying out power-off operation on the household appliance according to the type of the household appliance power-off period prestored by the controller. And after the power-off period is ended, recalculating the access priority values of all the household appliances according to the access priority value calculation formula.

And 25, controlling the power consumption of the currently accessed household appliance according to the control strategy.

Optionally, in step 22, the operation state and the operation data of the household appliance may also be recorded, and a control strategy may be received to restore the power supply to the household appliance which is powered off, or to power off the household appliance which is in the power supply state.

Optionally, after the step 25, when a forcible operation instruction for forcibly turning on or off any accessed household appliance sent by a user is received, turning on or turning off the household appliance corresponding to the forcible operation instruction according to the forcible operation instruction; and determining and updating the power utilization state change information of all the household appliances.

Optionally, after the step 21 of classifying all the connected home appliances according to the sensitivity of the home appliances to power connection, the method may further include: receiving a household appliance operation instruction sent by a user through remote control; and controls the household appliances corresponding to the household appliance operation instructions.

Further, after the step 25 controls the power utilization of the currently accessed household appliance according to the control strategy, the step 21 or the step 22 is continuously executed in a returning mode.

In the technical scheme provided by the embodiment of the invention, the intelligent power utilization control is not based on a preset static schedule or a preset power utilization strategy, but dynamically generates a control strategy, adjusts the operation mode of each household appliance in real time, and can correspond to the dynamic change condition of the household appliance and more effectively use electric energy.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical disk storage, and the like) having computer-usable program code embodied therein.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The electric control equipment is characterized by being applied to electric control of household appliances and comprising a controller, a signal meter and a communication interface, wherein the controller, the signal meter and the communication interface are connected in pairs through buses and transmit data through the connected buses, and the controller, the signal meter and the communication interface are connected in pairs through buses, wherein the controller, the signal meter and the communication interface are connected in series, and the controller, the signal meter and the communication interface are connected in series through the buses

The signal meter is used for measuring and calculating the electricity utilization information of each household appliance in all the accessed household appliances and transmitting the measurement result to the controller through the communication interface;

the communication interface is used for transmitting the measurement result of the signal meter to a controller;

the controller is used for classifying all the connected household appliances according to the sensitivity of the household appliances to power connection; determining an access priority value corresponding to each category of household appliances according to the classification result and the measurement result transmitted by the signal meter; determining a control strategy for each household appliance according to the access priority value; controlling the power consumption of all the currently accessed household appliances according to the control strategy;

the category comprises any one or more of household appliances which must be continuously powered and have adjustable power, household appliances which can be interrupted and have non-adjustable power, household appliances which can be interrupted and have adjustable power and household appliances which must be continuously powered and have non-adjustable power;

the controller is particularly used for

(1) Determining the corresponding access priority value of the household appliance which must be continuously powered and has adjustable power according to the following modes:

wherein k is a number of the household appliances,to the lower limit of the power regulation range of the household appliance k,the upper limit of the power regulation range of the household appliance k,the access priority value of the household appliance k is shown, the variable p is the actual power actually loaded on the household appliance k, and a is the sensitivity of the access priority value of the household appliance k to the power change;

(2) determining an access priority value corresponding to the household appliance which can interrupt power supply and has non-adjustable power according to the following mode, wherein the access priority value is the corresponding access priority value after the household appliance which can interrupt power supply and has non-adjustable power is powered off:

wherein k is the household appliance, the variable t is the current actual time,at the moment of interruption of the power supply to the household appliance k,at the moment of supplying power to the household appliance k,b is the sensitivity of the access priority value of the household appliance k to the change of the power supply interruption time;

(3) determining an access priority value corresponding to the household appliance which can interrupt power supply and has nonadjustable power according to the following mode, wherein the access priority value is the corresponding access priority value when the household appliance which can interrupt power supply and has nonadjustable power is accessed after power failure:

<mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mrow> <msubsup> <mi>PR</mi> <mi>k</mi> <msup> <mi>t</mi> <mo>&prime;</mo> </msup> </msubsup> <mo>=</mo> <msup> <mi>e</mi> <mrow> <mo>-</mo> <msup> <mi>b</mi> <mo>&prime;</mo> </msup> <mrow> <mo>(</mo> <mfrac> <mrow> <msup> <mi>t</mi> <mo>&prime;</mo> </msup> <mo>-</mo> <msubsup> <mi>t</mi> <mi>k</mi> <mrow> <msup> <mi>start</mi> <mo>&prime;</mo> </msup> </mrow> </msubsup> </mrow> <mrow> <msubsup> <mi>t</mi> <mi>k</mi> <mrow> <msup> <mi>stop</mi> <mo>&prime;</mo> </msup> </mrow> </msubsup> <mo>-</mo> <msup> <mi>t</mi> <mo>&prime;</mo> </msup> </mrow> </mfrac> <mo>)</mo> </mrow> </mrow> </msup> </mrow> </mtd> <mtd> <mrow> <mi>i</mi> <mi>f</mi> </mrow> </mtd> <mtd> <mrow> <msubsup> <mi>t</mi> <mi>k</mi> <mrow> <msup> <mi>start</mi> <mo>&prime;</mo> </msup> </mrow> </msubsup> <mo>&le;</mo> <msup> <mi>t</mi> <mo>&prime;</mo> </msup> <mo>&le;</mo> <msubsup> <mi>t</mi> <mi>k</mi> <mrow> <msup> <mi>stop</mi> <mo>&prime;</mo> </msup> </mrow> </msubsup> </mrow> </mtd> </mtr> </mtable> </mfenced>

<mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mrow> <msubsup> <mi>PR</mi> <mi>k</mi> <msup> <mi>t</mi> <mo>&prime;</mo> </msup> </msubsup> <mo>=</mo> <mn>1</mn> </mrow> </mtd> <mtd> <mrow> <mi>i</mi> <mi>f</mi> </mrow> </mtd> <mtd> <mrow> <msup> <mi>t</mi> <mo>&prime;</mo> </msup> <mo><</mo> <msubsup> <mi>t</mi> <mi>k</mi> <mrow> <msup> <mi>start</mi> <mo>&prime;</mo> </msup> </mrow> </msubsup> </mrow> </mtd> </mtr> </mtable> </mfenced>

<mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mrow> <msubsup> <mi>PR</mi> <mi>k</mi> <msup> <mi>t</mi> <mo>&prime;</mo> </msup> </msubsup> <mo>=</mo> <mn>0</mn> </mrow> </mtd> <mtd> <mrow> <mi>i</mi> <mi>f</mi> </mrow> </mtd> <mtd> <mrow> <msup> <mi>t</mi> <mo>&prime;</mo> </msup> <mo>></mo> <msubsup> <mi>t</mi> <mi>k</mi> <mrow> <msup> <mi>stop</mi> <mo>&prime;</mo> </msup> </mrow> </msubsup> </mrow> </mtd> </mtr> </mtable> </mfenced>

wherein k is the household appliance, the variable t' is the current actual time,at the moment when the supply of power to the household appliance k starts,for the moment when the household appliance k is powered off,b' is the sensitivity of the access priority value of the household appliance k changing according to the change of the power supply time after the household appliance k is electrified;

(4) determining an access priority value corresponding to the household appliance which can interrupt power supply and can adjust power according to the following modes:

or

Wherein k is household appliance, PR_kIs an access priority value;

wherein,to the lower limit of the power regulation range of the household appliance k,the method comprises the following steps that (1) the upper limit of the power regulation range of a household appliance k is set, a variable p is the actual power actually loaded on the household appliance k, and a is the sensitivity of the access priority value of the household appliance k to power change;

wherein, the variable t is the current actual time,at the moment of interruption of the power supply to the household appliance k,b is the sensitivity of the access priority value of the household appliance k to the change of the power supply interruption time at the moment of supplying power to the household appliance k;

wherein, the variable t' is the current actual time,at the moment when the supply of power to the household appliance k starts,b' is the sensitivity that the access priority value of the household appliance k changes according to the change of power supply time after the household appliance k is powered off;

(5) determining the corresponding access priority value of the household appliance which must be continuously powered and has non-adjustable power according to the following modes:

<mrow> <msub> <mi>PR</mi> <mi>k</mi> </msub> <mo>=</mo> <msubsup> <mi>PR</mi> <mi>k</mi> <mi>p</mi> </msubsup> <mo>&times;</mo> <msubsup> <mi>PR</mi> <mi>k</mi> <mi>t</mi> </msubsup> <mo>=</mo> <mn>1</mn> <mo>&times;</mo> <mn>1</mn> <mo>=</mo> <mn>1</mn> </mrow>

wherein k is household appliance, PR_kIs an access priority value.

2. The device of claim 1, wherein the communication interface is further configured to receive a forced operation instruction sent by a user to force any accessed household appliance to be turned on or off, and send the received forced operation instruction to the controller;

the controller is also used for turning on or turning off the household appliance corresponding to the forced operation instruction according to the forced operation instruction; and determining and updating the power utilization state change information of all the household appliances.

3. The apparatus of claim 1, wherein the communication interface is further configured to receive a home appliance operation command sent by a user through a remote control, and send the received home appliance operation command to the controller;

the controller is also used for controlling the household appliance corresponding to the household appliance operation instruction.

4. The apparatus according to any of claims 1 to 3, wherein the controller is specifically configured to determine the control strategy in one of the following ways:

after the fact that a new household appliance is accessed is determined, the total power value of all the household appliances is larger than the set power upper limit value, and the adjustable household appliance set is not empty, the household appliance with the lowest access priority value is controlled;

after the fact that a new household appliance is accessed is determined, the accumulated power consumption of all the household appliances within the preset time is larger than the set power consumption, and the adjustable household appliance set is not empty, the household appliance with the lowest access priority value is controlled.

5. A power utilization control method is characterized in that the method is applied to power utilization control of household appliances and comprises the following steps:

classifying all the accessed household appliances according to the sensitivity of the household appliances to power connection; and are

Measuring and calculating power consumption information of each household appliance in all the connected household appliances;

determining an access priority value corresponding to each category of household appliances according to the classification result and the electricity utilization information;

determining a control strategy for each household appliance according to the access priority value;

controlling the power consumption of the currently accessed household appliance according to the control strategy;

wherein the category comprises any one or more of household appliances which must be continuously powered and have adjustable power, household appliances which can be interrupted and have unadjustable power, household appliances which can be interrupted and have adjustable power, and household appliances which must be continuously powered and have unadjustable power, wherein:

wherein k is a number of the household appliances,to the lower limit of the power regulation range of the household appliance k,the upper limit of the power regulation range of the household appliance k,the access priority value of the household appliance k is shown, the variable p is the actual power actually loaded on the household appliance k, and a is the sensitivity of the priority value of the household appliance k to the power change;

<mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mrow> <msubsup> <mi>PR</mi> <mi>k</mi> <mi>t</mi> </msubsup> <mo>=</mo> <mn>1</mn> <mo>-</mo> <msup> <mi>e</mi> <mrow> <mo>-</mo> <mi>b</mi> <mrow> <mo>(</mo> <mfrac> <mrow> <mi>t</mi> <mo>-</mo> <msubsup> <mi>t</mi> <mi>k</mi> <mrow> <mi>s</mi> <mi>t</mi> <mi>o</mi> <mi>p</mi> </mrow> </msubsup> </mrow> <mrow> <msubsup> <mi>t</mi> <mi>k</mi> <mrow> <mi>s</mi> <mi>t</mi> <mi>a</mi> <mi>r</mi> <mi>t</mi> </mrow> </msubsup> <mo>-</mo> <mi>t</mi> </mrow> </mfrac> <mo>)</mo> </mrow> </mrow> </msup> </mrow> </mtd> <mtd> <mrow> <mi>i</mi> <mi>f</mi> </mrow> </mtd> <mtd> <mrow> <msubsup> <mi>t</mi> <mi>k</mi> <mrow> <mi>s</mi> <mi>t</mi> <mi>o</mi> <mi>p</mi> </mrow> </msubsup> <mo>&le;</mo> <mi>t</mi> <mo>&le;</mo> <msubsup> <mi>t</mi> <mi>k</mi> <mrow> <mi>s</mi> <mi>t</mi> <mi>a</mi> <mi>r</mi> <mi>t</mi> </mrow> </msubsup> </mrow> </mtd> </mtr> </mtable> </mfenced>3

wherein k is the household appliance which can interrupt power supply, the variable t' is the current actual time,at the moment when the supply of power to the household appliance k starts,for the moment when the household appliance k is powered off,b' is the sensitivity of the access priority value of the household appliance k changing according to the change of the power supply time after the household appliance k is electrified;

or

Wherein k is household appliance, PR_kIs an access priority value;

wherein k is household appliance, PR_kIs an access priority value.

6. The method of claim 5, after controlling power usage of the currently accessed home appliance according to the control policy, further comprising:

when a forced operation instruction which is sent by a user and used for forcibly turning on or turning off any accessed household appliance is received, the household appliance corresponding to the forced operation instruction is turned on or turned off according to the forced operation instruction; and are

And determining and updating the electricity utilization state change information of all the household appliances.

7. The method of claim 5, further comprising, after classifying all of the accessed home appliances according to their sensitivity to power,:

receiving a household appliance operation instruction sent by a user through remote control; and are

And controlling the household appliance corresponding to the household appliance operation instruction.

8. The method according to any one of claims 5 to 7, wherein determining the control strategy for each household appliance according to the classification result after the new household appliance is connected, the connection priority value and the power utilization state change information at least in one of the following manners comprises: