CN114659254B - Air conditioner load frequency control method based on discrete adjustment of temperature set value - Google Patents

Air conditioner load frequency control method based on discrete adjustment of temperature set value Download PDF

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CN114659254B
CN114659254B CN202210277278.8A CN202210277278A CN114659254B CN 114659254 B CN114659254 B CN 114659254B CN 202210277278 A CN202210277278 A CN 202210277278A CN 114659254 B CN114659254 B CN 114659254B
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CN114659254A (en
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包宇庆
姚兹丽
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Nanjing Normal University
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/50—Load

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
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  • Air Conditioning Control Device (AREA)

Abstract

The invention relates to an air conditioner load frequency control method based on discrete adjustment of a temperature set value, which comprises the following steps: firstly, designing the overall architecture of a control system; secondly, designing a broadcast control signal modulation module; thirdly, designing a broadcast control signal demodulation module; the scheme provides a double-layer broadcasting control method. Under the condition that the minimum temperature adjustment amount is considered to be 1 ℃, the temperature adjustment signal of 1 ℃ is converted into a broadcasting probability control signal, so that the continuous adjustment of the power of the air conditioner load is realized; the air conditioner is divided into six states, a priority mechanism is introduced, the air conditioner with the temperature set point adjusted has priority to restore to the original set point, and the comfort level of a user is greatly improved. Through double-layer broadcast control of an air conditioner, a novel frequency control method is provided, and experiments prove that the method has good frequency control performance.

Description

Air conditioner load frequency control method based on discrete adjustment of temperature set value
Technical Field
The invention relates to a control method, in particular to an air conditioner load frequency control method based on discrete adjustment of a temperature set value, and belongs to the field of power system automation.
Background
The method reduces the consumption of fossil energy, improves the ratio of renewable energy, builds a low-carbon society and has become global consensus. However, as large-scale renewable energy sources are accessed into the grid, permeability is continually increasing, and intermittent and random problems thereof pose challenges for safe and stable operation of the grid. With the rapid development of intelligent electricity utilization technology, a large amount of load side resources participate in renewable energy consumption. Among the numerous load side resources, the air conditioning load depends on the heat preservation capability of air and solids in a room, has response characteristics similar to those of an energy storage battery, and can play an important role in renewable energy consumption. The power of the air conditioner load is flexibly regulated, so that the active power of the power grid can be balanced in response to the demand of the power grid, and an important effect can be achieved.
However, most of the literature currently uses the temperature set point as a continuous variable when studying the temperature set point control strategy, and does not take into account the discreteness of the temperature adjustment. For most practical air conditioners, the minimum temperature adjustment of the remote control is 1 ℃. This results in the existing literature method not being directly applicable to an actual air conditioning system. If the control signal of the 1 ℃ regulating quantity is broadcast and sent to all air conditioners, a large number of compressors of the air conditioners are turned on or off at the same time, so that impact is caused on active power balance of a power grid.
Aiming at the problem, the scheme provides an air conditioner load frequency control strategy based on discrete adjustment of a temperature set value. Under the condition that the minimum temperature adjustment amount is 1 ℃, a double-layer broadcasting control frame is adopted to convert the temperature adjustment amount of 1 ℃ into probability control information so as to realize continuous adjustment of the load power of the air conditioner. Meanwhile, the problem of comfort level of users is considered, so that bidirectional adjustment, smooth adjustment and comfortable adjustment of the air conditioner load are realized. The method can smoothly adjust the aggregate power of the air conditioner load, has good frequency control performance, and simultaneously greatly reduces the switching times of the air conditioner load and the switching cost.
Disclosure of Invention
The invention provides an air conditioner load frequency control method based on discrete adjustment of a temperature set value, which aims at the problem existing in the prior art. First, the overall architecture of the control system is designed in consideration of the frequency control of the participation of the air conditioning load in the power system. Secondly, a double-layer broadcast control strategy of an air conditioner load control system is required to be formulated, and an air conditioner load control center module and an air conditioner load controller module are designed. And finally, each controller calculates a designated temperature regulation command and sends the designated temperature regulation command to the air conditioner load cluster module so as to participate in the frequency control of the power system.
In order to achieve the above object, the present invention provides a method for controlling a load frequency of an air conditioner based on discrete adjustment of a temperature set point, comprising the steps of:
firstly, designing the overall architecture of a control system;
secondly, designing a broadcast control signal modulation module;
and thirdly, designing a broadcast control signal demodulation module.
In the first step, the overall architecture of the control system is designed, specifically as follows,
the control system consists of a double-layer broadcast control module and an electric power system module, wherein the double-layer broadcast control module comprises a broadcast control signal modulation module and a broadcast control signal demodulation module, the broadcast control signal modulation module consists of a control center module, the broadcast control signal demodulation module consists of a controller module and an air conditioner load cluster module, and when the control center receives the frequency deviation delta f of the electric power system, the power adjustment u required by the air conditioner load cluster is calculated c And converts it into global control information U b The controller module broadcast to the air conditioner at the lower layer, each air conditioner controller in the controller module receives U b Then, a specific T is calculated for the corresponding air conditioner set Adjusting the command, converting the command into state switching information of the air conditioner, and transmitting the state switching information to an air conditioner load cluster module, wherein each air conditioner load of the air conditioner load cluster is adjusted up or down T according to the specific conditions set Command to regulate, and finally, the air conditioning load cluster aggregates its power Δp ACs Uploading to the power system module to participate in frequency control, broadcasting control signal U b The switching probability information of the air conditioner in different states is included, so that three control targets of the air conditioner load are realized: bidirectional adjustment, smooth adjustment, and comfort adjustment.
The second step is to design a broadcast control signal modulation module, which is composed of a control center module, the control center receives the frequency deviation delta f of the power system, and calculates the power adjustment u needed by the air conditioner load cluster c And adjusts the signal u according to the power c Generating a broadcast control signal U b ＝{I s ,v p+ ,v p0 ,v p- And the air conditioning load is regulated in a bidirectional way, smoothly and comfortably by sending the air conditioning load to an air conditioning controller module at the lower layer, wherein the steps are as follows:
step 2.1: calculating powerRegulatory requirement u c First, the reference power adjustment requirement delta P of the air conditioner is calculated ref So that the aggregate power delta P of the air conditioner ACS Can continuously track delta P ref ，ΔP ref Can be proportional or integral to the frequency deviation Δf, primary frequency modulation requires ΔP ref In proportional relation to Δf, ΔP is required for secondary frequency modulation ref Integral with Δf to achieve the reference power regulation requirement ΔP ref First, Δp is calculated ref And delta P ACs Difference DeltaP error Then the difference value is input into a PI controller to finally obtain the power regulation demand u c ；
Step 2.2: comfort regulation, the objective of which is to take into account the comfort of the user while regulating the temperature set point of the air conditioner, in order to achieve a comfort regulation of the air conditioning load, a priority mechanism is introduced, according to the current temperature set point T of the air conditioning load set And a switching state, dividing the air conditioner into six states: ACs ON+ 、ACs ON0 、ACs ON- 、ACs OFF+ 、ACs OFF0 And ACs OFF- ，ACs ON Indicating that the air conditioner belongs to ON-ACs (air conditioner with original state ON): ACs ON+ Temperature set point T representing ON-AC set The height is adjusted; ACs ON- Temperature set point T representing ON-AC set Has been down-regulated; ACs ON0 Temperature set point T representing ON-AC set ACs have not been shifted OFF Indicating that the air conditioner belongs to OFF-ACs (air conditioner whose original state is OFF): ACs OFF+ Temperature set point T representing OFF-AC set The height is adjusted; ACs OFF- Temperature set point T representing OFF-AC set Has been down-regulated; ACs OFF0 Temperature set point T representing OFF-AC set Air conditioners that have not been shifted, and whose temperature set point has been adjusted, have a higher priority to return to their original set point, e.g. ACs ON+ And ACs OFF+ For T set Down-regulation with higher priority for T set Upregulation has lower priority, ACs ON- And ACs OFF- For T set Down-regulation has lower priority to T set Upregulating higher priority, ACs ON0 And ACs OFF0 For T set The priorities of down and up are in the middle;
step 2.3: smooth regulation, which requires that the continuous change of the power of the aggregated air conditioner is realized under the condition that the temperature set point is moved up or down by 1 ℃, a group of up-regulation or down-regulation probabilities are respectively defined for the air conditioners in six states in consideration of the requirement of the smooth regulation, and the probability is a continuous control variable, so that the smooth regulation of the load of the air conditioner can be realized, and ACs ON+ 、ACs ON0 And ACs ON- Is composed of P on+ 、P on0 And P on- Representation, ACs OFF+ 、ACs OFF0 And ACs OFF- Is composed of P off+ 、P off0 And P off- The representation, then the adjustment probability v can be derived accordingly p+ 、v p0 、v p- . If u is c >0, then a load is required to be added, the temperature set point T should be adjusted downward for OFF-AC set 。ACs OFF+ 、ACs OFF0 And ACs OFF- Is to adjust the probability v downward p+ ,v p0 ,v p- Can be derived from the following equation:
also, if u c <0, then the load needs to be reduced and the temperature set point T to ON-AC needs to be set set Up-regulation of ACs ON+ 、ACs ON0 And ACs ON- Up-regulation probability v of (2) p+ ,v p0 ,v p- Can be derived from the following equation:
step 2.4: bidirectional regulation, the requirement of which is to realize that the temperature set point of the air conditioner can be raised and lowered, and the broadcast control signal contains an up/down regulation index I in consideration of the requirement of bidirectional regulation s To indicate upward or downward adjustment T set Information of (I) s =1 indicates that the load increases (T set Downward adjustment), I s = -1 represents load reduction (T set Upward adjustment), due to I s The value of (2) represents T set Is adjusted downward or upward, and thus can be adjusted by u c Symbol decision of (2):
to sum up, obtain the broadcast control signal U b ＝{I s ,v p+ ,v p0 ,v p And broadcast to a broadcast control signal demodulation module.
The third step, designing a broadcast control signal demodulation module, wherein the broadcast control signal demodulation module comprises a controller module and an air conditioner load cluster module, the controller module comprises an ON-ACs control module cluster and an OFF-ACs control module cluster, the ON-ACs control module cluster comprises n ON-AC control modules, the OFF-ACs control module cluster comprises m OFF-ACs, the air conditioner load cluster module comprises an ON-ACs load cluster module and an OFF-ACs load cluster module, the ON-ACs load cluster and the OFF-ACs load cluster respectively comprise n ON-AC loads and m OFF-AC loads, and each control module in the control module cluster receives U b Then, a specific T is calculated for the corresponding air conditioning load set Adjusting the command, converting the command into state switching information of the air conditioner, and transmitting the state switching information to an air conditioner load cluster module, wherein each air conditioner load of the air conditioner load cluster is adjusted up or down T according to the specific conditions set Command to make adjustments, the process is illustrated with the ith air conditioning load as an example, as follows:
step 3.1: control module receiving U of each air conditioner b ＝{I s ,v p+ ,v p0 ,v p- Determining an adjustment probability v of the air conditioner according to the current state of the air conditioner p,i Represented by the following formula:
step 3.2: generating psi between 0 and 1 i A random number is used to determine the random number,
step 3.3: if I s =1, go to step 3.4; if I s = -1, go to step 3.5,
step 3.4: if psi is i <v p,i And the air conditioner belongs to the OFF-ACs, T set,i The temperature was adjusted down to 1 ℃. If psi is i >v p,i T is then set,i The temperature of the liquid crystal is not changed,
step 3.5: if psi is i <v p,i And the air conditioner belongs to ON-ACs, T set,i Up-regulating at 1 ℃. If psi is i >v p,i T is then set,i The temperature of the liquid crystal is not changed,
step 3.6: when the air conditioner load receives a specific T set,i After the command is adjusted, the corresponding action of adjusting the temperature set value is performed, and meanwhile, the corresponding state switching is performed.
Compared with the prior art, the method has the advantages that 1) the technical scheme can realize continuous adjustment of the load power of the air conditioner under the condition that the minimum temperature adjustment amount is 1 ℃; 2) According to the scheme, the air conditioner load is divided into six states, so that the excessive regulation of a specific air conditioner can be effectively avoided. The temperature adjustment times are limited to a relatively low value, so that the comfort level of a user is improved; 3) Compared with the prior control strategy, the control strategy greatly reduces the switching times of the air conditioner load and reduces the switching cost; 4) The control strategy is simultaneously suitable for primary frequency modulation and secondary frequency modulation, and has good frequency control performance.
Drawings
Fig. 1 is a schematic diagram of the overall architecture of a control system taking into account air conditioning load provided by the present invention;
fig. 2 is a flowchart of a broadcast control signal modulation module provided in the present invention;
FIG. 3 shows u provided by the present invention c Schematic of the calculation process of (a);
fig. 4 is a flowchart of a broadcast control signal demodulation module provided by the present invention.
The specific embodiment is as follows:
in order to enhance the understanding of the present invention, the present embodiment will be described in detail with reference to the accompanying drawings.
Example 1: referring to fig. 1, a method for controlling a frequency of an air conditioner load based on discrete adjustment of a temperature set point, the method comprising the steps of:
firstly, designing the overall architecture of a control system;
secondly, designing a broadcast control signal modulation module;
and thirdly, designing a broadcast control signal demodulation module.
In the first step, the overall architecture of the control system is designed, specifically as follows,
the control system consists of a double-layer broadcast control module and an electric power system module, wherein the double-layer broadcast control module comprises a broadcast control signal modulation module and a broadcast control signal demodulation module, the broadcast control signal modulation module consists of a control center module, the broadcast control signal demodulation module consists of a controller module and an air conditioner load cluster module, and when the control center receives the frequency deviation delta f of the electric power system, the power adjustment u required by the air conditioner load cluster is calculated c And converts it into global control information U b The controller module broadcast to the air conditioner at the lower layer, each air conditioner controller in the controller module receives U b Then, a specific T is calculated for the corresponding air conditioner set Adjustment ofCommand and converting it into state switching information of air conditioner and transmitting it to air conditioner load cluster module, each air conditioner load of air conditioner load cluster is up-regulated or down-regulated according to concrete T set Command to regulate, and finally, the air conditioning load cluster aggregates its power Δp ACs Uploading to the power system module to participate in frequency control, broadcasting control signal U b The switching probability information of the air conditioner in different states is included, so that three control targets of the air conditioner load are realized: bidirectional adjustment, smooth adjustment, and comfort adjustment.
In the second step, a broadcast control signal modulation module is designed, specifically as follows, and a flowchart thereof is shown in fig. 2. The broadcast control signal modulation module consists of a control center module, wherein the control center receives the frequency deviation delta f of the power system and calculates the power adjustment u required by the air conditioner load cluster c And adjusts the signal u according to the power c Generating a broadcast control signal U b ＝{I s ,v p+ ,v p0 ,v p- And the air conditioning load is regulated in a bidirectional way, smoothly and comfortably by sending the air conditioning load to an air conditioning controller module at the lower layer, wherein the steps are as follows:
step 2.1: calculating power regulation demand u c As shown in fig. 3. First, calculate the reference power adjustment requirement ΔP of the air conditioner ref So that the aggregate power delta P of the air conditioner ACS Can continuously track delta P ref ，ΔP ref Can be proportional or integral to the frequency deviation Δf, primary frequency modulation requires ΔP ref In proportional relation to Δf, ΔP is required for secondary frequency modulation ref Integral with Δf to achieve the reference power regulation requirement ΔP ref First, Δp is calculated ref And delta P ACs Difference DeltaP error Then the difference value is input into a PI controller to finally obtain the power regulation demand u c ；
Step 2.2: comfort regulation, the objective of which is to take into account the comfort of the user while regulating the temperature set point of the air conditioner, in order to achieve a comfort regulation of the air conditioning load, a priority mechanism is introduced, according to the current temperature set point T of the air conditioning load set And a switch state, toAir conditioners are classified into six states: ACs ON+ 、ACs ON0 、ACs ON- 、ACs OFF+ 、ACs OFF0 And ACs OFF- ，ACs ON Indicating that the air conditioner belongs to ON-ACs (air conditioner with original state ON): ACs ON+ Temperature set point T representing ON-AC set The height is adjusted; ACs ON- Temperature set point T representing ON-AC set Has been down-regulated; ACs ON0 Temperature set point T representing ON-AC set ACs have not been shifted OFF Indicating that the air conditioner belongs to OFF-ACs (air conditioner whose original state is OFF): ACs OFF+ Temperature set point T representing OFF-AC set The height is adjusted; ACs OFF- Temperature set point T representing OFF-AC set Has been down-regulated; ACs OFF0 Temperature set point T representing OFF-AC set Air conditioners that have not been shifted, and whose temperature set point has been adjusted, have a higher priority to return to their original set point, e.g. ACs ON+ And ACs OFF+ For T set Down-regulation with higher priority for T set Upregulation has lower priority, ACs ON- And ACs OFF- For T set Down-regulation has lower priority to T set Upregulating higher priority, ACs ON0 And ACs OFF0 For T set The priorities of down and up are in the middle;
step 2.3: smooth regulation, which requires that the continuous change of the power of the aggregated air conditioner is realized under the condition that the temperature set point is moved up or down by 1 ℃, a group of up-regulation or down-regulation probabilities are respectively defined for the air conditioners in six states in consideration of the requirement of the smooth regulation, and the probability is a continuous control variable, so that the smooth regulation of the load of the air conditioner can be realized, and ACs ON+ 、ACs ON0 And ACs ON- Is composed of P on+ 、P on0 And P on- Representation, ACs OFF+ 、ACs OFF0 And ACs OFF- Is composed of P off+ 、P off0 And P off- The representation, then the adjustment probability v can be derived accordingly p+ 、v p0 、v p- . If u is c >0, then a load is required to be added, the temperature set point T should be adjusted downward for OFF-AC set 。ACs OFF+ 、ACs OFF0 And ACs OFF- Is to adjust the probability v downward p+ ,v p0 ,v p- Can be derived from the following equation:
also, if u c <0, then the load needs to be reduced and the temperature set point T to ON-AC needs to be set set Up-regulation of ACs ON+ 、ACs ON0 And ACs ON- Up-regulation probability v of (2) p+ ,v p0 ,v p- Can be derived from the following equation:
step 2.4: bidirectional regulation, the requirement of which is to realize that the temperature set point of the air conditioner can be raised and lowered, and the broadcast control signal contains an up/down regulation index I in consideration of the requirement of bidirectional regulation s To indicate upward or downward adjustment T set Information of (I) s =1 indicates that the load increases (T set Downward adjustment), I s = -1 represents load reduction (T set Upward adjustment), due to I s Value of (2) representsT set Is adjusted downward or upward, and thus can be adjusted by u c Symbol decision of (2):
to sum up, obtain the broadcast control signal U b ＝{I s ,v p+ ,v p0 ,v p And broadcast to a broadcast control signal demodulation module.
In the third step, a broadcast control signal demodulation module is designed, specifically as follows, and a flowchart thereof is shown in fig. 4. The broadcast control signal demodulation module consists of a controller module and an air conditioner load cluster module, wherein the controller module comprises an ON-ACs control module cluster and an OFF-ACs control module cluster, the ON-ACs control module cluster comprises n ON-AC control modules, the OFF-ACs control module cluster comprises m OFF-ACs, the air conditioner load cluster module comprises an ON-ACs load cluster module and an OFF-ACs load cluster module, the ON-ACs load cluster and the OFF-ACs load cluster respectively comprise n ON-AC loads and m OFF-AC loads, and each control module in the control module cluster receives U b Then, a specific T is calculated for the corresponding air conditioning load set Adjusting the command, converting the command into state switching information of the air conditioner, and transmitting the state switching information to an air conditioner load cluster module, wherein each air conditioner load of the air conditioner load cluster is adjusted up or down T according to the specific conditions set Command to make adjustments, the process is illustrated with the ith air conditioning load as an example, as follows:
step 3.1: control module receiving U of each air conditioner b ＝{I s ,v p+ ,v p0 ,v p- Determining an adjustment probability v of the air conditioner according to the current state of the air conditioner p,i Represented by the following formula:
step 3.2: generating psi between 0 and 1 i A random number is used to determine the random number,
step 3.3: if I s =1, go to step 3.4; if I s = -1, go to step 3.5,
step 3.4: if psi is i <v p,i And the air conditioner belongs to the OFF-ACs, T set,i The temperature was adjusted down to 1 ℃. If psi is i >v p,i T is then set,i The temperature of the liquid crystal is not changed,
step 3.5: if psi is i <v p,i And the air conditioner belongs to ON-ACs, T set,i Up-regulating at 1 ℃. If psi is i >v p,i T is then set,i The temperature of the liquid crystal is not changed,
step 3.6: when the air conditioner load receives a specific T set,i After the command is adjusted, the corresponding action of adjusting the temperature set value is performed, and meanwhile, the corresponding state switching is performed.
It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and equivalent changes or substitutions made on the basis of the above-mentioned technical solutions fall within the scope of the present invention as defined in the claims.

Claims (2)

1. An air conditioner load frequency control method based on discrete adjustment of a temperature set value is characterized by comprising the following steps:
firstly, designing the overall architecture of a control system;
secondly, designing a broadcast control signal modulation module;
thirdly, designing a broadcast control signal demodulation module;
in the first step, the overall architecture of the control system is designed, specifically as follows,
the control system consists of a double-layer broadcast control module and an electric power system module, wherein the double-layer broadcast control module comprises a broadcast control signal modulation module and a broadcast control signal demodulation module, the broadcast control signal modulation module consists of a control center module, the broadcast control signal demodulation module consists of a controller module and an air conditioner load cluster module, and when the control center receives the frequency deviation delta f of the electric power system, a power adjustment signal u required by the air conditioner load cluster is calculated c And converts it into a broadcast control signal U b Broadcast to the followingController module of air conditioner of layer, each air conditioner controller in controller module receives U b Then, a specific temperature set value T is calculated for the corresponding air conditioner set Adjusting the command, converting the command into state switching information of the air conditioner, and transmitting the state switching information to an air conditioner load cluster module, wherein each air conditioner load of the air conditioner load cluster is adjusted up or down T according to the specific conditions set Command to regulate, and finally, the air conditioning load cluster aggregates its power Δp ACs Uploading to the power system module to participate in frequency control, broadcasting control signal U b The switching probability information of the air conditioner in different states is included, so that three control targets of the air conditioner load are realized: bidirectional regulation, smooth regulation and comfort regulation;
secondly, designing a broadcast control signal modulation module, wherein the broadcast control signal modulation module comprises a control center module, the control center receives the frequency deviation delta f of the power system, and calculates a power adjustment signal u required by an air conditioner load cluster c And adjusts the signal u according to the power c Generating a broadcast control signal U b ＝{I s ,v p+ ,v p0 ,v p- And the air conditioning load is regulated in a bidirectional way, smoothly and comfortably by sending the air conditioning load to an air conditioning controller module at the lower layer, wherein the steps are as follows:
step 2.1: calculating the power adjustment signal u c First, the reference power adjustment requirement delta P of the air conditioner is calculated ref So that the aggregate power delta P of the air conditioner ACS Can continuously track delta P ref ，ΔP ref Can be proportional or integral with the power system frequency deviation deltaf, primary frequency modulation needs deltap ref In proportional relation to Δf, ΔP is required for secondary frequency modulation ref Integral with Δf to achieve the reference power regulation requirement ΔP ref First, Δp is calculated ref And delta P ACs Difference DeltaP error Then the difference value is input into a PI controller to finally obtain a power adjustment signal u c ；
Step 2.2: comfort adjustment, the objective of which is to adjust the air conditioner temperature set point while taking into account the comfort of the user, in order to be practicalComfort regulation of the current air conditioning load, introduction of a priority mechanism, according to the current temperature set value T of the air conditioning load set And a switching state, dividing the air conditioner into six states: ACs ON+ 、ACs ON0 、ACs ON- 、ACs OFF+ 、ACs OFF0 And ACs OFF- ，ACs ON Indicating that the air conditioner belongs to ON-ACs (air conditioner with original state ON): ACs ON+ Temperature set point T representing ON-AC set The height is adjusted; ACs ON- Temperature set point T representing ON-AC set Has been down-regulated; ACs ON0 Temperature set point T representing ON-AC set ACs have not been shifted OFF Indicating that the air conditioner belongs to OFF-ACs (air conditioner whose original state is OFF): ACs OFF+ Temperature set point T representing OFF-AC set The height is adjusted; ACs OFF- Temperature set point T representing OFF-AC set Has been down-regulated; ACs OFF0 Temperature set point T representing OFF-AC set Air conditioners that have not been shifted, and whose temperature set point has been adjusted, have a higher priority to return to their original set point, ACs ON+ And ACs OFF+ For T set Down-regulation with higher priority for T set Upregulation has lower priority, ACs ON- And ACs OFF- For T set Down-regulation has lower priority to T set Upregulating higher priority, ACs ON0 And ACs OFF0 For T set The priorities of down and up are in the middle;
step 2.3: smooth regulation, which requires that the continuous change of the power of the aggregated air conditioner is realized under the condition that the temperature set point is moved up or down by 1 ℃, a group of up-regulation or down-regulation probabilities are respectively defined for the air conditioners in six states in consideration of the requirement of the smooth regulation, and the probability is a continuous control variable to realize the smooth regulation of the load of the air conditioner, and ACs ON+ 、ACs ON0 And ACs ON- Is composed of P on+ 、P on0 And P on- Representation, ACs OFF+ 、ACs OFF0 And ACs OFF Total power of P off+ 、P off0 And P off- The representation, then the adjustment probability v can be derived accordingly p+ 、v p0 、v p- If u c >0, the load is increased, and the temperature set point T should be adjusted downward for the OFF-AC set ，ACs OFF+ 、ACs OFF0 And ACs OFF- Is to adjust the probability v downward p+ ,v p0 ,v p- Can be derived from the following equation:
also, if u c <0, then the load needs to be reduced and the temperature set point T for ON-AC needs to be set set Up-regulation of ACs ON+ 、ACs ON0 And ACs ON- Upward adjustment probability v of (2) p+ ,v p0 ,v p- Can be derived from the following equation:
step 2.4: bidirectional regulation, the requirement of which is to realize that the temperature set point of the air conditioner can be raised and lowered, and the broadcast control signal contains an up/down regulation index I in consideration of the requirement of bidirectional regulation s Refer toIndicating upward or downward adjustment of the temperature set point T set Information of (I) s =1 indicates that the load increases (T set Downward adjustment), I s = -1 represents load reduction (T set Upward adjustment), due to I s The value of (2) represents T set Is adjusted downward or upward, and thus can be adjusted by u c Symbol decision of (2):
to sum up, obtain the broadcast control signal U b ＝{I s ,v p+ ,v p0 ,v p And broadcast to a broadcast control signal demodulation module.
2. The method according to claim 1, wherein the third step is to design a broadcast control signal demodulation module, and the broadcast control signal demodulation module is composed of a controller module and an air conditioner load cluster module, wherein the controller module includes an ON-ACs control module cluster and an OFF-ACs control module cluster, the ON-ACs control module cluster includes n ON-AC control modules, the OFF-ACs control module cluster includes m OFF-ACs, the air conditioner load cluster includes an ON-ACs load cluster module and an OFF-ACs load cluster module, the ON-ACs load cluster and the OFF-ACs load cluster are composed of n ON-AC loads and m OFF-AC loads, respectively, and each control module in the control module cluster receives U b Then, a specific temperature set value T is calculated for the corresponding air conditioning load set Adjusting the command, converting the command into state switching information of the air conditioner, and transmitting the state switching information to an air conditioner load cluster module, wherein each air conditioner load of the air conditioner load cluster is adjusted up or down T according to the specific conditions set Command to make adjustments, the process is illustrated with the ith air conditioning load as an example, as follows:
step 3.1: control module receiving U of each air conditioner b ＝{I s ,v p+ ,v p0 ,v p- Determining an adjustment of the air conditioner based on a current state of the air conditionerProbability v p,i Represented by the following formula:
step 3.2: generating psi between 0 and 1 i A random number is used to determine the random number,
step 3.3: if I s =1, go to step 3.4; if I s = -1, go to step 3.5,
step 3.4: if psi is i <v p,i And the air conditioner belongs to the OFF-ACs, T set,i Down-regulating 1 deg.C, if ψ i >v p,i T is then set,i The temperature of the liquid crystal is not changed,
step 3.5: if psi is i <v p,i And the air conditioner belongs to ON-ACs, T set,i Up-regulating 1 deg.C, if ψ i >v p,i T is then set,i The temperature of the liquid crystal is not changed,
step 3.6: when the air conditioner load receives a specific T set,i After the command is adjusted, the corresponding action of adjusting the temperature set value is performed, and meanwhile, the corresponding state switching is performed.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106989482A (en) * 2017-03-23 2017-07-28 国网山东省电力公司电力科学研究院 A kind of air conditioner load monitoring system and monitoring method based on LABVIEW
CN109103893A (en) * 2018-09-27 2018-12-28 华北电力大学 A kind of cluster temperature control load participates in the auxiliary frequency modulation method of power grid AGC
CN110492498A (en) * 2019-09-04 2019-11-22 东北电力大学 A kind of temperature control load participation electric system primary frequency modulation method based on bilayer control
CN113757931A (en) * 2021-08-18 2021-12-07 华北电力大学 Air conditioner control method and system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106989482A (en) * 2017-03-23 2017-07-28 国网山东省电力公司电力科学研究院 A kind of air conditioner load monitoring system and monitoring method based on LABVIEW
CN109103893A (en) * 2018-09-27 2018-12-28 华北电力大学 A kind of cluster temperature control load participates in the auxiliary frequency modulation method of power grid AGC
CN110492498A (en) * 2019-09-04 2019-11-22 东北电力大学 A kind of temperature control load participation electric system primary frequency modulation method based on bilayer control
CN113757931A (en) * 2021-08-18 2021-12-07 华北电力大学 Air conditioner control method and system

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