CN107101324A - A kind of uniformity control method of convertible frequency air-conditioner load group - Google Patents
A kind of uniformity control method of convertible frequency air-conditioner load group Download PDFInfo
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- CN107101324A CN107101324A CN201710243572.6A CN201710243572A CN107101324A CN 107101324 A CN107101324 A CN 107101324A CN 201710243572 A CN201710243572 A CN 201710243572A CN 107101324 A CN107101324 A CN 107101324A
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/62—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
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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
- F24F11/62—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
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Abstract
It is as follows the invention discloses the uniformity control method of convertible frequency air-conditioner load group a kind of：Provide the temperature knots modification of leader's intelligent body convertible frequency air-conditioner and other intelligent body convertible frequency air-conditioners are passed it to using consistency algorithm；Judge whether amended temperature exceedes preset temperature interval, if temperature is set into the interval upper limit of preset temperature or lower limit more than if, if being directly set to amended temperature not less than if；Calculate the compressor frequency that should be kept at a temperature of convertible frequency air-conditioner and draw its power；The difference of convertible frequency air-conditioner multiple targets power and actual power is calculated, is terminated if its absolute value is less than allowable error value, the temperature knots modification of intelligent body convertible frequency air-conditioner is led according to the difference amendment if it is not less than allowable error value and repeated the above steps.The uniformity control strategy of convertible frequency air-conditioner load group proposed by the present invention a kind of, has taken into full account the distribution character of convertible frequency air-conditioner, it is ensured that power target distributional equity, has enriched the control mode of convertible frequency air-conditioner group.
Description
Technical field
The present invention relates to air conditioner controlling technology field, particularly a kind of uniformity control method of convertible frequency air-conditioner load group.
Background technology
With the continuous improvement of social economy and air-conditioning equipment technology, convertible frequency air-conditioner is by energy saving and cooling is rapid
Equipment feature, sales volume sustainable growth, its occupation rate of market has been even up to 60%.At the same time, because a large amount of of air-conditioning make
With Load in Summer peak-valley difference is highlighted, and less for the control strategy research of convertible frequency air-conditioner.Although convertible frequency air-conditioner quantity is more,
But be distributed and more disperse, therefore how to be efficiently controlled and reach that the target powers of needs is this to convertible frequency air-conditioner resource
The major issue of invention urgent need to resolve.
The content of the invention
The technical problems to be solved by the invention are to overcome the deficiencies in the prior art, and provide a kind of convertible frequency air-conditioner load group
Uniformity control method, its using air-conditioner temperature knots modification as uniformity variable, will be widely distributed using consistency algorithm
Convertible frequency air-conditioner resource relationship is got up, and improves the economy of the utilization of resources, substantially more make use of convertible frequency air-conditioner resource.
The present invention uses following technical scheme to solve above-mentioned technical problem：
According to a kind of uniformity control method of convertible frequency air-conditioner load group proposed by the present invention, comprise the following steps：
The expected target power reached after step 1, given convertible frequency air-conditioner load group are controlled, gives convertible frequency air-conditioner load group's
The allowable error value of target power and actual power；
All convertible frequency air-conditioners in step 2, convertible frequency air-conditioner load group have initial temperature, provide as leader's intelligent body
The temperature knots modification of convertible frequency air-conditioner；
Step 3, the temperature knots modification as the convertible frequency air-conditioner of leader's intelligent body passed to by remaining using consistency algorithm
Convertible frequency air-conditioner, remaining convertible frequency air-conditioner is non-leader's intelligent body；
Step 4, the initial temperature of each convertible frequency air-conditioner is added with temperature knots modification and tries to achieve all convertible frequency air-conditioner temperature, sentenced
Whether each convertible frequency air-conditioner temperature of breaking is in default temperature range [Tmin,Tmax] in, held if not in default temperature range
Row step 5, step 6 is performed if in default temperature range；
Step 5, convertible frequency air-conditioner temperature are more than default temperature range upper limit TmaxConvertible frequency air-conditioner temperature is then set to humidity province
Between upper limit Tmax, convertible frequency air-conditioner temperature is less than preset temperature interval limit TminConvertible frequency air-conditioner temperature is then set to temperature range lower limit
Tmin；
Step 6, all convertible frequency air-conditioner temperature values in convertible frequency air-conditioner load group are set to itself initial temperature with receiving
Temperature knots modification sum；
Step 7, calculate compressor frequency of each convertible frequency air-conditioner at respective temperature, the compressor calculated according to this
Frequency is modified to the frequency of compressor；
Step 8, the power for trying to achieve by the compressor frequency of each convertible frequency air-conditioner each convertible frequency air-conditioner；
Step 9, the power of each convertible frequency air-conditioner carried out to be added the actual power for drawing convertible frequency air-conditioner load group, calculate and become
The target power of frequency air conditioner load group and the difference of actual power；
Whether the absolute value of the difference of step 10, the target power for judging convertible frequency air-conditioner load group and actual power, which is less than, is permitted
Perhaps error amount, if not less than step 11 is performed if allowable error value, terminates to convertible frequency air-conditioner load if allowable error value is less than
The control of group；
The difference of step 11, the target power according to convertible frequency air-conditioner load group and actual power is to being used as leader's intelligent body
The temperature knots modification of convertible frequency air-conditioner is modified, and repeats step 2 to step 10.
It is used as a kind of further prioritization scheme of uniformity control method of convertible frequency air-conditioner load group of the present invention, step
3 is specific as follows：
(1) according to the link topology formation adjacency matrix A between each convertible frequency air-conditioner；If there is n platform convertible frequency air-conditioners,
It is a (i, j) that adjacency matrix A, which should be element in n × n matrix, adjacency matrix, wherein, i, j=1 ..., n, diagonal
Element value is 0, i ≠ j in the numerical value a (i, j) of off-diagonal, and the numerical value a (i, j) of off-diagonal is i-th of convertible frequency air-conditioner
Connection side number between j-th of convertible frequency air-conditioner；
(2) obtained according to the adjacency matrix A of the link topology formation between each convertible frequency air-conditioner in convertible frequency air-conditioner load group
To Laplacian Matrix L, L is that the element in n × n matrix, Laplacian Matrix is l (i, j),
L (i, j)=- a (i, j) (2)
(3) according to the Laplacian Matrix L-shaped of formation into row stochastic matrix D, D is n × n matrix, the random square of row
Element in battle array is d (i, j),
(4) k-th of convertible frequency air-conditioner is assumed as leader's intelligent body, and 1≤k≤n receives temperature knots modification Δ T in tk
Afterwards, the temperature knots modification that the t+1 moment is delivered to remaining convertible frequency air-conditioner is：
ΔTj(t) it is the temperature knots modification of t jth platform convertible frequency air-conditioner, formula (4) is the change for being used as non-leader's intelligent body
Frequency air-conditioning is in communication with each other to determine the temperature knots modification of itself by the convertible frequency air-conditioner with being directly connected to.
It is used as a kind of further prioritization scheme of uniformity control method of convertible frequency air-conditioner load group of the present invention, step
Compressor frequency calculating process of each convertible frequency air-conditioner at respective temperature in 7 be：
(1) refrigerating capacity and room temperature relation
Contacting for refrigerating of convertible frequency air conditioner amount and room temperature, the work of convertible frequency air-conditioner are set up using the classical equivalent heat parameter model of single order
It is continuous as state, i.e., is not in the single order classics under run-stopping status, therefore convertible frequency air-conditioner effect if work
Equivalent heat parameter model is：
Wherein,For the indoor air temperature at t+1 moment；For t+1 moment outdoor temperatures；For the frequency conversion of t
Air conditioner refrigerating amount；R is the equivalent thermal resistance in room residing for convertible frequency air-conditioner；C is the equivalent thermal capacitance in room residing for convertible frequency air-conditioner, and e is certainly
The right truth of a matter, formula (5) is the relation for reflecting refrigerating capacity and room temperature；
(2) refrigerating of convertible frequency air conditioner amount and the relation of compressor frequency
Compressor frequency and the relation of refrigerating of convertible frequency air conditioner amount are described using quadratic function, specific function representation
Formula is：
Wherein, fairFor frequency converting air-conditioner compressor frequency；A, b and c represent that the once relation of refrigerating capacity and compressor frequency is normal
Number, its value is different with different convertible frequency air-conditioner types, QairFor refrigerating of convertible frequency air conditioner amount；
(3) the corresponding compressor frequency of convertible frequency air-conditioner temperature is calculated
Determine convertible frequency air-conditioner temperature TsUnder corresponding frequency-changeable compressor frequency should be recognized that outdoor temperature Tout, and assume pre-
If a period of time in outdoor temperature not time to time change so that trying to achieve maintenance indoor temperature remains convertible frequency air-conditioner temperature institute
The compressor frequency needed；Therefore the relation for each variable satisfaction in formula (5) is：
Formula (7) and formula (8) are substituted into and obtained in formula (5)：
Formula (6) is combined with formula (9) and obtained：
Wherein, fairAs in convertible frequency air-conditioner temperature TsUnder compressor frequency.
It is used as a kind of further prioritization scheme of uniformity control method of convertible frequency air-conditioner load group of the present invention, step
The power calculation of convertible frequency air-conditioner is in 8：
Wherein, PairIt is T as in convertible frequency air-conditioner temperaturesAnd outdoor temperature is ToutUnder convertible frequency air-conditioner power, m and n tables
Show the once relation constant of convertible frequency air-conditioner power and compressor frequency, its value is different with different convertible frequency air-conditioner types.
It is used as a kind of further prioritization scheme of uniformity control method of convertible frequency air-conditioner load group of the present invention, step
The target power of convertible frequency air-conditioner load group and the mathematic interpolation of actual power in 9 are：
Wherein, Δ P (t) is the difference between the target power and actual power of the convertible frequency air-conditioner group load group of t,
PgoalFor the target power of convertible frequency air-conditioner load group,For the performance number of i-th convertible frequency air-conditioner t.
It is used as a kind of further prioritization scheme of uniformity control method of convertible frequency air-conditioner load group of the present invention, step
Changing amount correction method as the temperature of the convertible frequency air-conditioner of leader's intelligent body in 11 is：
Wherein, Δ Ti(t+1) for the t+1 moment convertible frequency air-conditioner temperature knots modification, λ is correction factor, and k is represented as neck
Lead the convertible frequency air-conditioner sequence number of intelligent body.
The present invention uses above technical scheme compared with prior art, with following technique effect：
(1) method that the present invention is provided, can be achieved effective utilization to widely distributed, large number of convertible frequency air-conditioner；Respectively
Platform convertible frequency air-conditioner is as an intelligent body, by that can obtain the control instruction that control centre sends with neighbouring agent communication,
It is in the present invention convertible frequency air-conditioner temperature knots modification, so as to change self-operating state, target power is realized, without every
Platform convertible frequency air-conditioner is joined directly together with control centre, need to only ensure that every convertible frequency air-conditioner and control centre directly have at least one to lead to
Road can get the instruction of control centre's issue；
(2) the uniformity control method of the convertible frequency air-conditioner load group provided by the present invention a kind of can effectively reduce control
The cost of convertible frequency air-conditioner group, cost-effectively utilizes convertible frequency air-conditioner resource and causes convertible frequency air-conditioner temperature in default temperature range
Interior, selection temperature knots modification can ensure power target distributional equity as uniformity variable so that realize target power
When it is identical to the influence degree of each convertible frequency air-conditioner.
Brief description of the drawings
Fig. 1 is the uniformity control method general flow chart of the convertible frequency air-conditioner load group of the present invention.
Fig. 2 is 10 convertible frequency air-conditioner link topologies.
Fig. 3 is room temperature change procedure under convertible frequency air-conditioner correspondence working conditions of compressor.
Fig. 4 is ten convertible frequency air-conditioner load group's changed power schematic diagrames in iterative process.
Fig. 5 is the temperature change schematic diagram of ten convertible frequency air-conditioners in iterative process.
Embodiment
Technical solution of the present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, so that ability
The technical staff in domain can be better understood from the present invention and can be practiced, but illustrated embodiment is not as the limit to the present invention
It is fixed.
Embodiment is carried out according to step of the present invention：
A kind of uniformity control strategy of convertible frequency air-conditioner load group, it (is the change of the present invention as shown in Figure 1 to comprise the following steps
The general flow chart of the uniformity control method of frequency air conditioner load group)：
The expected target power reached after step 1, given convertible frequency air-conditioner load group are controlled, gives convertible frequency air-conditioner load group's
The allowable error value of target power and actual power；
All convertible frequency air-conditioners in step 2, convertible frequency air-conditioner load group have initial temperature, provide as leader's intelligent body
The temperature knots modification of convertible frequency air-conditioner；
Step 3, the temperature knots modification as the convertible frequency air-conditioner of leader's intelligent body passed to by remaining using consistency algorithm
Convertible frequency air-conditioner, remaining convertible frequency air-conditioner is non-leader's intelligent body；
Step 4, the initial temperature of each convertible frequency air-conditioner is added with temperature knots modification and tries to achieve all convertible frequency air-conditioner temperature, sentenced
Whether each convertible frequency air-conditioner temperature of breaking is in default temperature range [Tmin,Tmax] in, held if not in default temperature range
Row step 5, step 6 is performed if in default temperature range；
Step 5, convertible frequency air-conditioner temperature are more than default temperature range upper limit TmaxConvertible frequency air-conditioner temperature is then set to humidity province
Between upper limit Tmax, convertible frequency air-conditioner temperature is less than preset temperature interval limit TminConvertible frequency air-conditioner temperature is then set to temperature range lower limit
Tmin；
Step 6, all convertible frequency air-conditioner temperature values in convertible frequency air-conditioner load group are set to itself initial temperature with receiving
Temperature knots modification sum；
Step 7, calculate compressor frequency of each convertible frequency air-conditioner at respective temperature, the compressor calculated according to this
Frequency is modified to the frequency of compressor；
Step 8, the power for trying to achieve by the compressor frequency of each convertible frequency air-conditioner each convertible frequency air-conditioner；
Step 9, the power of each convertible frequency air-conditioner carried out to be added the actual power for drawing convertible frequency air-conditioner load group, calculate and become
The target power of frequency air conditioner load group and the difference of actual power；
Whether the absolute value of the difference of step 10, the target power for judging convertible frequency air-conditioner load group and actual power, which is less than, is permitted
Perhaps error amount, if not less than step 11 is performed if allowable error value, terminates to convertible frequency air-conditioner load if allowable error value is less than
The control of group；
The difference of step 11, the target power according to convertible frequency air-conditioner load group and actual power is to being used as leader's intelligent body
The temperature knots modification of convertible frequency air-conditioner is modified, and repeats step 2 to step 10.
It is specifically introduced below：
(1) the temperature knots modification of the convertible frequency air-conditioner in step 2 as leader's intelligent body is set to：
Each convertible frequency air-conditioner individual in convertible frequency air-conditioner load group is considered as intelligent body, can independently enter connecing for row information
Transmission is received, the frequency of itself compressor needs setting is known by the knots modification of temperature and the compressor frequency of itself can be changed.Make
There should be the path of any convertible frequency air-conditioner of at least one arrival for the convertible frequency air-conditioner of leader's intelligent body, so that the equal energy of remaining convertible frequency air-conditioner
Receive the information of temperature knots modification.0 is set to for the temperature knots modification initial value of leader's intelligent body.
Specifically, the initial temperature of convertible frequency air-conditioner group is set to 25 DEG C, leader's intelligent body convertible frequency air-conditioner and non-leader's intelligence
The temperature of the energy body air-conditioning variable is set to 0 degree Celsius.
(2) the specific of the temperature knots modification that leader's intelligent body convertible frequency air-conditioner is received is transmitted using consistency algorithm in step 3
Process is：
1) according to the link topology formation adjacency matrix A between convertible frequency air-conditioner load group's individual.If it is empty to there is the frequency conversion of n platforms
Adjust, then adjacency matrix A should be n × n matrix.Element a (i, j) in adjacency matrix, wherein i, j=1 ..., n, diagonally
Line element value is 0.The numerical value a (i, j) of off-diagonal, wherein i ≠ j, are the connection between convertible frequency air-conditioner i and convertible frequency air-conditioner j
Side number.A (i, j) is a 0-1 matrix for general finite simple topology figure.
Specifically, by taking ten convertible frequency air-conditioners as an example, specific link topology is as shown in Fig. 2 wherein No. 3 intelligent bodies are neck
Lead intelligent body.The matrix that the adjacency matrix then formed by the link topology of 10 air-conditionings is 10 × 10, specific expression
Formula is:
2) Laplce's square is obtained according to the adjacency matrix A of the link topology formation between convertible frequency air-conditioner load group's individual
Battle array L.L is similarly the element l (i, j) in n × n matrix, Laplacian Matrix, wherein i, j=1 ..., n.
L (i, j)=- a (i, j) (2)
Specifically, being according to the Laplacian Matrix of Fig. 2 link topologies formation：
3) according to the Laplacian Matrix L-shaped of formation into row stochastic matrix D.D is similarly n × n matrix, and row is random
Element d (i, j) in matrix, wherein i, j=1 ..., n.
Specifically, being according to the row stochastic matrix of Fig. 2 link topologies formation：
4) k-th of leader's intelligent body convertible frequency air-conditioner, 1≤k≤n is receiving the temperature knots modification Δ T of tkAfterwards, during t+1
Carve be delivered to it is non-leader intelligent body convertible frequency air-conditioner temperature knots modification be：
Due to the convertible frequency air-conditioner temperature knots modification Δ T as leader's intelligent bodykNeed to pass through power by superior control centre
Difference just can determine that after being modified, therefore not be suitable for formula (4).The physical meaning of formula (4) is as non-leader's intelligence
The convertible frequency air-conditioner of body is in communication with each other to determine that the temperature of itself changes by the convertible frequency air-conditioner as intelligent body with being directly connected to
Amount, without directly being communicated with the convertible frequency air-conditioner as leader's intelligent body.
(3) the convertible frequency air-conditioner temperature in step 5 exceedes the processing mode of default temperature range：
Ts=Tmax, Ts0+ Δ T ＞ Tmax (5)
Ts=Tmin, Ts0+ Δ T ＜ Tmin (6)
[T in formula (5) and formula (6)min,Tmax] it is the corresponding default temperature range of convertible frequency air-conditioner, TsWork as convertible frequency air-conditioner
Preceding temperature, Ts0For initial temperature, Δ T is the temperature knots modification being currently received.
Specifically, the parameter in formula (5) and formula (6) is set to：The corresponding default temperature range of convertible frequency air-conditioner for [22,
28], Ts0For 25 DEG C.
(4) the convertible frequency air-conditioner temperature in step 6 is set to：
Ts=Ts0+ Δ T, Tmin≤Ts0+ΔT≤Tmax (7)
(5) the frequency converting air-conditioner compressor frequency calculating process in step 7 is：
1) refrigerating capacity and room temperature relation are set up
Contacting for refrigerating of convertible frequency air conditioner amount and room temperature, the work of convertible frequency air-conditioner are set up using the classical equivalent heat parameter model of single order
It is continuous as state, i.e., is not in the single order classics under run-stopping status, therefore convertible frequency air-conditioner effect if work
Equivalent heat parameter model is：
WhereinFor the indoor air temperature at t+1 moment, DEG C；For t+1 moment outdoor temperatures, DEG C；For t
Refrigerating of convertible frequency air conditioner amount, kW；R is the equivalent thermal resistance in room residing for convertible frequency air-conditioner, DEG C/kW；C is room residing for convertible frequency air-conditioner
Equivalent thermal capacitance, kWh/ DEG C.
Air conditioner refrigerating amount and the relation of power can be contacted using Energy Efficiency Ratio, and specific formula is as follows：
Qair=ηairPair (9)
Wherein ηairFor air-conditioning Energy Efficiency Ratio；PairFor air-conditioning power, kW.Formula (8) is connected and can drawn with formula (9)
The relation of convertible frequency air-conditioner power and room temperature.
2) relation of air-conditioning power, refrigerating capacity and compressor frequency is set up
Relation for compressor frequency and air-conditioning power is described using linear function, using quadratic function pair
Compressor frequency and the relation of air conditioner refrigerating amount are described, and specific function expression is：
Pair=nfair+m (10)
Wherein fairFor frequency converting air-conditioner compressor frequency, Hz；M and n represent the once relation of air-conditioning power and compressor frequency
Constant, its value is different with different air-conditioning types；A, b and c represent that the once relation of refrigerating capacity and compressor frequency is normal
Number, its value is different with different air-conditioning types.
3) the corresponding frequency converting air-conditioner compressor frequency of temperature is calculated
Determine air-conditioner temperature TsUnder corresponding frequency-changeable compressor frequency should be recognized that outdoor temperature Tout, and assume the short time
Interior outdoor temperature not time to time change, maintains indoor temperature to remain the compressor frequency needed for air-conditioner temperature so as to try to achieve.
Therefore the relation that should be met for each variable in formula (8) is：
Formula (12) and formula (13) are substituted into can obtain in formula (8)：
Formula (14) can be obtained with formula (11) combination：
F in formulaairAs in convertible frequency air-conditioner temperature TsUnder compressor frequency, meaning of the convertible frequency air-conditioner in the operation at frequencies
Justice is：Regardless of the original state of room temperature, room temperature can maintain convertible frequency air-conditioner temperature T after long-playsIt is attached
Closely.
Specifically, parameter of the formula (8) into formula (15) is set to：Outdoor temperature ToutFor 32 DEG C, room residing for convertible frequency air-conditioner
Equivalent thermal resistance R is randomly generated in the range of [4.0,4.1], and the equivalent thermal capacitance C in room residing for convertible frequency air-conditioner is in [0.16,0.18]
Inside randomly generate, once relation constant a, b, c of refrigerating capacity and compressor frequency are respectively [- 0.3 × 10-3,-0.23×10-3], [0.050,0.055], randomly generate in the range of [0.2,0.25].Assuming that indoor temperature initial value is 26 DEG C, convertible frequency air-conditioner
Temperature is 25 DEG C, then can calculate compressor frequency in this case using above-mentioned parameter and formula (15), in the compressor frequency obtained
The change procedure of room temperature is as shown in Figure 3 under rate operating mode.
(6) power calculation of the convertible frequency air-conditioner in step 8 is：
P in formulaairIt is T as in convertible frequency air-conditioner temperaturesAnd outdoor temperature is ToutUnder convertible frequency air-conditioner power.
Specifically, the parameter in formula (16) is set to：Once relation constant m, n of air-conditioning power and compressor frequency exist
Randomly generated in the range of [0.05,0.06], [0.015,0.018].
(7) convertible frequency air-conditioner load multiple targets power and the mathematic interpolation of actual power in step 9 is：
Δ P (t) is the difference between the convertible frequency air-conditioner multiple targets power and actual power of t, P in formulagoalFor frequency conversion
The target power of air-conditioning group,For the convertible frequency air-conditioner performance number of i-th convertible frequency air-conditioner t.
Specifically, target power P in formula (17)goalIt is set to 3kW.
(8) leader's intelligent body convertible frequency air-conditioner temperature change amount correction method in step 11 is：
Δ T in formulai(t+1) it is the convertible frequency air-conditioner temperature knots modification at t+1 moment, λ is correction factor, can according to reality
Setting is adjusted, k represents the convertible frequency air-conditioner sequence number of correspondence leader's intelligent body.
Specifically, difference DELTA P judges allowable error value for 0.05kW between target power and actual power, and λ is set to 0.1,
In view of actual communication speed, the time required for each iteration is set in the iteration for carrying out discrete number of times as 0.01s, is schemed
4 and Fig. 5 is that effect is embodied in this strategy, and wherein Fig. 4 shows for the overall power change of ten convertible frequency air-conditioners in an iterative process
It is intended to.As can be seen from the figure convertible frequency air-conditioner group reaches target power from initial gain value in the time close to 3s, reacts
Speed or comparatively faster, it is not extra high power adjusting task that can meet rate request.Fig. 5 is in an iterative process
The temperature variation schematic diagram of ten convertible frequency air-conditioners.It can be seen that the temperature knots modification of ten convertible frequency air-conditioners tends to one
Cause, and convertible frequency air-conditioner temperature ensure that task without departing from default temperature range while power adjusting target is realized
Distributional equity, the i.e. influence to each convertible frequency air-conditioner are relatively uniform.It can thus be seen that the convertible frequency air-conditioner that the present invention is provided is born
The uniformity control strategy of lotus group can ensure target power task distributional equity well, effectively by widely distributed change
Frequency air-conditioning resource combines, and is all connected without by every convertible frequency air-conditioner with leader's intelligent body convertible frequency air-conditioner, so that efficiently fair
Realize target power in ground.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deductions or replacement can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (6)
1. a kind of uniformity control method of convertible frequency air-conditioner load group, it is characterised in that comprise the following steps：
The expected target power reached after step 1, given convertible frequency air-conditioner load group are controlled, gives the target of convertible frequency air-conditioner load group
The allowable error value of power and actual power；
All convertible frequency air-conditioners in step 2, convertible frequency air-conditioner load group have initial temperature, provide the frequency conversion as leader's intelligent body
The temperature knots modification of air-conditioning；
Step 3, the temperature knots modification as the convertible frequency air-conditioner of leader's intelligent body passed to by remaining frequency conversion using consistency algorithm
Air-conditioning, remaining convertible frequency air-conditioner is non-leader's intelligent body；
Step 4, the initial temperature of each convertible frequency air-conditioner is added with temperature knots modification and tries to achieve all convertible frequency air-conditioner temperature, judge each
Whether individual convertible frequency air-conditioner temperature is in default temperature range [Tmin,Tmax] in, perform step if not in default temperature range
Rapid 5, perform step 6 if in default temperature range；
Step 5, convertible frequency air-conditioner temperature are more than default temperature range upper limit TmaxThen convertible frequency air-conditioner temperature is set in temperature range
Limit Tmax, convertible frequency air-conditioner temperature is less than preset temperature interval limit TminConvertible frequency air-conditioner temperature is then set to temperature range lower limit Tmin；
Step 6, all convertible frequency air-conditioner temperature values in convertible frequency air-conditioner load group are set to itself initial temperature and the temperature received
Spend knots modification sum；
Step 7, calculate compressor frequency of each convertible frequency air-conditioner at respective temperature, the compressor frequency calculated according to this
Frequency to compressor is modified；
Step 8, the power for trying to achieve by the compressor frequency of each convertible frequency air-conditioner each convertible frequency air-conditioner；
Step 9, the power of each convertible frequency air-conditioner carried out to be added the actual power for drawing convertible frequency air-conditioner load group, calculate frequency conversion empty
Adjust the target power of load group and the difference of actual power；
Whether the absolute value of the difference of step 10, the target power for judging convertible frequency air-conditioner load group and actual power, which is less than, allows to miss
Difference, if not less than step 11 is performed if allowable error value, terminates to convertible frequency air-conditioner load group's if less than allowable error value
Control；
The difference of step 11, the target power according to convertible frequency air-conditioner load group and actual power is to the frequency conversion as leader's intelligent body
The temperature knots modification of air-conditioning is modified, and repeats step 2 to step 10.
2. a kind of uniformity control method of convertible frequency air-conditioner load group according to claim 1, it is characterised in that step 3
It is specific as follows：
(1) according to the link topology formation adjacency matrix A between each convertible frequency air-conditioner；If there is n platform convertible frequency air-conditioners, abut
It is a (i, j) that matrix A, which should be element in n × n matrix, adjacency matrix, wherein, i, j=1 ..., n, diagonal entry
Value is 0, i ≠ j in the numerical value a (i, j) of off-diagonal, and the numerical value a (i, j) of off-diagonal is i-th of convertible frequency air-conditioner and jth
Connection side number between individual convertible frequency air-conditioner；
(2) drawn according to the adjacency matrix A of the link topology formation between each convertible frequency air-conditioner in convertible frequency air-conditioner load group
This matrix L of pula, L is that the element in n × n matrix, Laplacian Matrix is l (i, j),
<mrow>
<mi>l</mi>
<mrow>
<mo>(</mo>
<mi>i</mi>
<mo>,</mo>
<mi>i</mi>
<mo>)</mo>
</mrow>
<mo>=</mo>
<munder>
<mo>&Sigma;</mo>
<mrow>
<mi>i</mi>
<mo>&NotEqual;</mo>
<mi>j</mi>
</mrow>
</munder>
<mi>a</mi>
<mrow>
<mo>(</mo>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
<mo>)</mo>
</mrow>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>)</mo>
</mrow>
</mrow>
L (i, j)=- a (i, j) (2)
(3) according to the Laplacian Matrix L-shaped of formation into row stochastic matrix D, during D is n × n matrix, row stochastic matrix
Element be d (i, j),
<mrow>
<mi>d</mi>
<mrow>
<mo>(</mo>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
<mo>)</mo>
</mrow>
<mo>=</mo>
<mo>|</mo>
<mi>l</mi>
<mrow>
<mo>(</mo>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
<mo>)</mo>
</mrow>
<mo>|</mo>
<mo>/</mo>
<munderover>
<mo>&Sigma;</mo>
<mrow>
<mi>j</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</munderover>
<mo>|</mo>
<mi>l</mi>
<mrow>
<mo>(</mo>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
<mo>)</mo>
</mrow>
<mo>|</mo>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>3</mn>
<mo>)</mo>
</mrow>
</mrow>
1
(4) k-th of convertible frequency air-conditioner is assumed as leader's intelligent body, and 1≤k≤n receives temperature knots modification Δ T in tkAfterwards, t+1
The temperature knots modification that moment is delivered to remaining convertible frequency air-conditioner is：
<mrow>
<msub>
<mi>&Delta;T</mi>
<mi>i</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>+</mo>
<mn>1</mn>
<mo>)</mo>
</mrow>
<mo>=</mo>
<munderover>
<mo>&Sigma;</mo>
<mrow>
<mi>j</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</munderover>
<mi>d</mi>
<mrow>
<mo>(</mo>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
<mo>)</mo>
</mrow>
<msub>
<mi>&Delta;T</mi>
<mi>j</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>,</mo>
<mi>i</mi>
<mo>&NotEqual;</mo>
<mi>k</mi>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>4</mn>
<mo>)</mo>
</mrow>
</mrow>
ΔTj(t) it is the temperature knots modification of t jth platform convertible frequency air-conditioner, formula (4) is to be used as the frequency conversion of non-leader's intelligent body empty
Tune is in communication with each other to determine the temperature knots modification of itself by the convertible frequency air-conditioner with being directly connected to.
3. a kind of uniformity control method of convertible frequency air-conditioner load group according to claim 1, it is characterised in that step 7
In compressor frequency calculating process of each convertible frequency air-conditioner at respective temperature be：
(1) refrigerating capacity and room temperature relation
Contacting for refrigerating of convertible frequency air conditioner amount and room temperature, the work shape of convertible frequency air-conditioner are set up using the classical equivalent heat parameter model of single order
State is continuous, i.e., be not in run-stopping status if work, therefore the single order classics under convertible frequency air-conditioner effect are equivalent
Physochlaina infudibularis exponential model is：
<mrow>
<msubsup>
<mi>T</mi>
<mrow>
<mi>i</mi>
<mi>n</mi>
</mrow>
<mrow>
<mi>t</mi>
<mo>+</mo>
<mn>1</mn>
</mrow>
</msubsup>
<mo>=</mo>
<msubsup>
<mi>T</mi>
<mrow>
<mi>o</mi>
<mi>u</mi>
<mi>t</mi>
</mrow>
<mrow>
<mi>t</mi>
<mo>+</mo>
<mn>1</mn>
</mrow>
</msubsup>
<mo>-</mo>
<msubsup>
<mi>Q</mi>
<mrow>
<mi>a</mi>
<mi>i</mi>
<mi>r</mi>
</mrow>
<mi>t</mi>
</msubsup>
<mi>R</mi>
<mo>-</mo>
<mrow>
<mo>(</mo>
<msubsup>
<mi>T</mi>
<mrow>
<mi>o</mi>
<mi>u</mi>
<mi>t</mi>
</mrow>
<mi>t</mi>
</msubsup>
<mo>-</mo>
<msubsup>
<mi>Q</mi>
<mrow>
<mi>a</mi>
<mi>i</mi>
<mi>r</mi>
</mrow>
<mi>t</mi>
</msubsup>
<mi>R</mi>
<mo>-</mo>
<msubsup>
<mi>T</mi>
<mrow>
<mi>i</mi>
<mi>n</mi>
</mrow>
<mi>t</mi>
</msubsup>
<mo>)</mo>
</mrow>
<msup>
<mi>e</mi>
<mrow>
<mo>-</mo>
<mfrac>
<mrow>
<mi>d</mi>
<mi>t</mi>
</mrow>
<mrow>
<mi>R</mi>
<mi>C</mi>
</mrow>
</mfrac>
</mrow>
</msup>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>5</mn>
<mo>)</mo>
</mrow>
</mrow>
Wherein,For the indoor air temperature at t+1 moment；For t+1 moment outdoor temperatures；For the convertible frequency air-conditioner of t
Refrigerating capacity；R is the equivalent thermal resistance in room residing for convertible frequency air-conditioner；C is the equivalent thermal capacitance in room residing for convertible frequency air-conditioner, and e is nature bottom
Number, formula (5) is the relation for reflecting refrigerating capacity and room temperature；
(2) refrigerating of convertible frequency air conditioner amount and the relation of compressor frequency
Compressor frequency and the relation of refrigerating of convertible frequency air conditioner amount are described using quadratic function, specific function expression
For：
<mrow>
<msub>
<mi>Q</mi>
<mrow>
<mi>a</mi>
<mi>i</mi>
<mi>r</mi>
</mrow>
</msub>
<mo>=</mo>
<msubsup>
<mi>af</mi>
<mrow>
<mi>a</mi>
<mi>i</mi>
<mi>r</mi>
</mrow>
<mn>2</mn>
</msubsup>
<mo>+</mo>
<msub>
<mi>bf</mi>
<mrow>
<mi>a</mi>
<mi>i</mi>
<mi>r</mi>
</mrow>
</msub>
<mo>+</mo>
<mi>c</mi>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>6</mn>
<mo>)</mo>
</mrow>
</mrow>
Wherein, fairFor frequency converting air-conditioner compressor frequency；A, b and c represent the once relation constant of refrigerating capacity and compressor frequency,
Its value is different with different convertible frequency air-conditioner types, QairFor refrigerating of convertible frequency air conditioner amount；
(3) the corresponding compressor frequency of convertible frequency air-conditioner temperature is calculated
Determine convertible frequency air-conditioner temperature TsUnder corresponding frequency-changeable compressor frequency should be recognized that outdoor temperature Tout, and assume default one
Outdoor temperature not time to time change in the section time, maintains indoor temperature to remain the pressure needed for convertible frequency air-conditioner temperature so as to try to achieve
Contracting unit frequency；Therefore the relation for each variable satisfaction in formula (5) is：
<mrow>
<msubsup>
<mi>T</mi>
<mrow>
<mi>o</mi>
<mi>u</mi>
<mi>t</mi>
</mrow>
<mrow>
<mi>t</mi>
<mo>+</mo>
<mn>1</mn>
</mrow>
</msubsup>
<mo>=</mo>
<msubsup>
<mi>T</mi>
<mrow>
<mi>o</mi>
<mi>u</mi>
<mi>t</mi>
</mrow>
<mi>t</mi>
</msubsup>
<mo>=</mo>
<msub>
<mi>T</mi>
<mrow>
<mi>o</mi>
<mi>u</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>7</mn>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msubsup>
<mi>T</mi>
<mrow>
<mi>i</mi>
<mi>n</mi>
</mrow>
<mrow>
<mi>t</mi>
<mo>+</mo>
<mn>1</mn>
</mrow>
</msubsup>
<mo>=</mo>
<msubsup>
<mi>T</mi>
<mrow>
<mi>i</mi>
<mi>n</mi>
</mrow>
<mi>t</mi>
</msubsup>
<mo>=</mo>
<msub>
<mi>T</mi>
<mi>s</mi>
</msub>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>8</mn>
<mo>)</mo>
</mrow>
</mrow>
Formula (7) and formula (8) are substituted into and obtained in formula (5)：
<mrow>
<msubsup>
<mi>Q</mi>
<mrow>
<mi>a</mi>
<mi>i</mi>
<mi>r</mi>
</mrow>
<mi>t</mi>
</msubsup>
<mo>=</mo>
<mfrac>
<mrow>
<msubsup>
<mi>T</mi>
<mrow>
<mi>o</mi>
<mi>u</mi>
<mi>t</mi>
</mrow>
<mrow>
<mi>t</mi>
<mo>+</mo>
<mn>1</mn>
</mrow>
</msubsup>
<mo>-</mo>
<msub>
<mi>T</mi>
<mi>s</mi>
</msub>
</mrow>
<mi>R</mi>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>9</mn>
<mo>)</mo>
</mrow>
</mrow>
Formula (6) is combined with formula (9) and obtained：
<mrow>
<msub>
<mi>f</mi>
<mrow>
<mi>a</mi>
<mi>i</mi>
<mi>r</mi>
</mrow>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<mo>-</mo>
<mi>b</mi>
<mo>+</mo>
<msqrt>
<mrow>
<msup>
<mi>b</mi>
<mn>2</mn>
</msup>
<mo>-</mo>
<mn>4</mn>
<mi>a</mi>
<mrow>
<mo>(</mo>
<mi>c</mi>
<mo>-</mo>
<mfrac>
<mrow>
<msub>
<mi>T</mi>
<mrow>
<mi>o</mi>
<mi>u</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>T</mi>
<mi>s</mi>
</msub>
</mrow>
<mi>R</mi>
</mfrac>
<mo>)</mo>
</mrow>
</mrow>
</msqrt>
</mrow>
<mrow>
<mn>2</mn>
<mi>a</mi>
</mrow>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>10</mn>
<mo>)</mo>
</mrow>
</mrow>
Wherein, fairAs in convertible frequency air-conditioner temperature TsUnder compressor frequency.
4. a kind of uniformity control method of convertible frequency air-conditioner load group according to claim 3, it is characterised in that step 8
The power calculation of middle convertible frequency air-conditioner is：
<mrow>
<msub>
<mi>P</mi>
<mrow>
<mi>a</mi>
<mi>i</mi>
<mi>r</mi>
</mrow>
</msub>
<mo>=</mo>
<mi>n</mi>
<mfrac>
<mrow>
<mo>-</mo>
<mi>b</mi>
<mo>+</mo>
<msqrt>
<mrow>
<msup>
<mi>b</mi>
<mn>2</mn>
</msup>
<mo>-</mo>
<mn>4</mn>
<mi>a</mi>
<mrow>
<mo>(</mo>
<mi>c</mi>
<mo>-</mo>
<mfrac>
<mrow>
<msub>
<mi>T</mi>
<mrow>
<mi>o</mi>
<mi>u</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>T</mi>
<mi>s</mi>
</msub>
</mrow>
<mi>R</mi>
</mfrac>
<mo>)</mo>
</mrow>
</mrow>
</msqrt>
</mrow>
<mrow>
<mn>2</mn>
<mi>a</mi>
</mrow>
</mfrac>
<mo>+</mo>
<mi>m</mi>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>11</mn>
<mo>)</mo>
</mrow>
</mrow>
Wherein, PairIt is T as in convertible frequency air-conditioner temperaturesAnd outdoor temperature is ToutUnder convertible frequency air-conditioner power, m and n represent frequency conversion
The once relation constant of air-conditioning power and compressor frequency, its value is different with different convertible frequency air-conditioner types.
5. a kind of uniformity control method of convertible frequency air-conditioner load group according to claim 1, it is characterised in that step 9
In the target power of convertible frequency air-conditioner load group and the mathematic interpolation of actual power be：
<mrow>
<mi>&Delta;</mi>
<mi>P</mi>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>=</mo>
<msub>
<mi>P</mi>
<mrow>
<mi>g</mi>
<mi>o</mi>
<mi>a</mi>
<mi>l</mi>
</mrow>
</msub>
<mo>-</mo>
<munderover>
<mo>&Sigma;</mo>
<mrow>
<mi>i</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</munderover>
<msubsup>
<mi>P</mi>
<mrow>
<mi>a</mi>
<mi>i</mi>
<mi>r</mi>
</mrow>
<mi>i</mi>
</msubsup>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>,</mo>
<mi>i</mi>
<mo>=</mo>
<mn>1</mn>
<mo>,</mo>
<mo>...</mo>
<mo>,</mo>
<mi>n</mi>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>12</mn>
<mo>)</mo>
</mrow>
</mrow>
Wherein, Δ P (t) is the difference between the target power and actual power of the convertible frequency air-conditioner group load group of t, PgoalFor
The target power of convertible frequency air-conditioner load group,For the performance number of i-th convertible frequency air-conditioner t.
6. a kind of uniformity control method of convertible frequency air-conditioner load group according to claim 5, it is characterised in that step 11
The temperature of the middle convertible frequency air-conditioner as leader's intelligent body changes amount correction method：
<mrow>
<msub>
<mi>&Delta;T</mi>
<mi>i</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>+</mo>
<mn>1</mn>
<mo>)</mo>
</mrow>
<mo>=</mo>
<munderover>
<mo>&Sigma;</mo>
<mrow>
<mi>j</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</munderover>
<mi>d</mi>
<mrow>
<mo>(</mo>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
<mo>)</mo>
</mrow>
<msub>
<mi>&Delta;T</mi>
<mi>j</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mi>&lambda;</mi>
<mi>&Delta;</mi>
<mi>P</mi>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>,</mo>
<mi>i</mi>
<mo>=</mo>
<mi>k</mi>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>13</mn>
<mo>)</mo>
</mrow>
</mrow>
Wherein, Δ Ti(t+1) for the t+1 moment convertible frequency air-conditioner temperature knots modification, λ is correction factor, and k is represented and is used as leader's intelligence
The convertible frequency air-conditioner sequence number of energy body.
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| CN112484257A (en) * | 2020-12-04 | 2021-03-12 | 东南大学 | Double-layer consistency control method for large-scale variable-frequency air conditioner group |
| CN113219930A (en) * | 2021-05-21 | 2021-08-06 | 上海交通大学 | Variable frequency air conditioner second-order equivalent thermal parameter model online identification method based on particle swarm optimization |
| CN116345451A (en) * | 2023-05-26 | 2023-06-27 | 电子科技大学 | Operation control method and device for variable frequency temperature control load and terminal equipment |
| CN117327578A (en) * | 2023-09-26 | 2024-01-02 | 湖南安泰康成生物科技有限公司 | Cell culture apparatus |
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| CN103062869A (en) * | 2012-12-24 | 2013-04-24 | 江苏春兰空调设备有限公司 | Group control system and control method for module type central air-conditioners |
| CN105020859A (en) * | 2015-08-04 | 2015-11-04 | 深圳供电局有限公司 | Central air conditioner load-reduction temperature-adjusting method based on equal comfort level loss principle |
| CN105042800A (en) * | 2015-09-01 | 2015-11-11 | 东南大学 | Variable-frequency air conditioner load modeling and operation controlling method based on demand responses |
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| CN103062869A (en) * | 2012-12-24 | 2013-04-24 | 江苏春兰空调设备有限公司 | Group control system and control method for module type central air-conditioners |
| CN105020859A (en) * | 2015-08-04 | 2015-11-04 | 深圳供电局有限公司 | Central air conditioner load-reduction temperature-adjusting method based on equal comfort level loss principle |
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| CN112484257A (en) * | 2020-12-04 | 2021-03-12 | 东南大学 | Double-layer consistency control method for large-scale variable-frequency air conditioner group |
| CN113219930A (en) * | 2021-05-21 | 2021-08-06 | 上海交通大学 | Variable frequency air conditioner second-order equivalent thermal parameter model online identification method based on particle swarm optimization |
| CN116345451A (en) * | 2023-05-26 | 2023-06-27 | 电子科技大学 | Operation control method and device for variable frequency temperature control load and terminal equipment |
| CN116345451B (en) * | 2023-05-26 | 2023-08-11 | 电子科技大学 | Operation control method and device for variable frequency temperature control load and terminal equipment |
| CN117327578A (en) * | 2023-09-26 | 2024-01-02 | 湖南安泰康成生物科技有限公司 | Cell culture apparatus |
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