CN107101324B - A kind of consistency control method of convertible frequency air-conditioner load group - Google Patents
A kind of consistency control method of convertible frequency air-conditioner load group Download PDFInfo
- Publication number
- CN107101324B CN107101324B CN201710243572.6A CN201710243572A CN107101324B CN 107101324 B CN107101324 B CN 107101324B CN 201710243572 A CN201710243572 A CN 201710243572A CN 107101324 B CN107101324 B CN 107101324B
- Authority
- CN
- China
- Prior art keywords
- conditioner
- convertible frequency
- frequency air
- temperature
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
It is as follows the invention discloses a kind of consistency control method of convertible frequency air-conditioner load group: to 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 modified temperature is more than preset temperature section, temperature is set as the preset temperature section upper limit or lower limit if being more than, is directly set as modified temperature if being less than；It calculates the compressor frequency that should be kept at a temperature of convertible frequency air-conditioner and obtains its power；The difference for calculating convertible frequency air-conditioner multiple targets power and actual power terminates if its absolute value is less than allowable error value, if it is corrected the temperature knots modification of leader's intelligent body convertible frequency air-conditioner according to the difference not less than allowable error value and repeats the above steps.A kind of consistency control strategy of convertible frequency air-conditioner load group proposed by the present invention, has fully considered the distribution character of convertible frequency air-conditioner, ensure that power target distributional equity, enriched the control mode of convertible frequency air-conditioner group.
Description
Technical field
The present invention relates to air conditioner controlling technology field, especially a kind of consistency control method of convertible frequency air-conditioner load group.
Background technique
With the continuous improvement of social economy and air-conditioning equipment technology, convertible frequency air-conditioner is by energy saving and cools down rapid
Equipment feature, sales volume sustainable growth, occupation rate of market has been even up to 60%.At the same time, largely made due to air-conditioning
With Load in Summer peak-valley difference highlights, and the control strategy of convertible frequency air-conditioner is studied less.Although convertible frequency air-conditioner quantity is more,
But distribution is more dispersed, therefore the target power that how efficiently to be controlled convertible frequency air-conditioner resource and be reached needs is this
The major issue of invention urgent need to resolve.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, and provide a kind of convertible frequency air-conditioner load group
Consistency control method will be widely distributed using consistency algorithm using air-conditioner temperature knots modification as consistency variable
Convertible frequency air-conditioner resource relationship is got up, and the economy of the utilization of resources is improved, and convertible frequency air-conditioner resource is substantially more utilized.
The present invention uses following technical scheme to solve above-mentioned technical problem:
A kind of consistency control method of the convertible frequency air-conditioner load group proposed according to the present invention, comprising 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
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；
Temperature knots modification as the convertible frequency air-conditioner of leader's intelligent body is passed to remaining using consistency algorithm by step 3
Convertible frequency air-conditioner, remaining convertible frequency air-conditioner are non-leader's intelligent body；
The initial temperature of each convertible frequency air-conditioner is added with temperature knots modification and acquires all convertible frequency air-conditioner temperature by step 4, sentences
Whether each convertible frequency air-conditioner temperature of breaking is in preset temperature range [Tmin,Tmax] in, it is held if not in preset temperature range
Row step 5, if thening follow the steps 6 in preset temperature range；
Step 5, convertible frequency air-conditioner temperature are greater than preset temperature range upper limit TmaxConvertible frequency air-conditioner temperature is then set as 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 as temperature range lower limit
Tmin；
All convertible frequency air-conditioner temperature values in convertible frequency air-conditioner load group are set as itself initial temperature and received by step 6
The sum of temperature knots modification；
Step 7 calculates compressor frequency of each convertible frequency air-conditioner at respective temperature, according to the calculated compressor
Frequency modifies to the frequency of compressor；
Step 8, the power that each convertible frequency air-conditioner is acquired by the compressor frequency of each convertible frequency air-conditioner；
Step 9 carries out the power of each convertible frequency air-conditioner to be added the actual power for obtaining convertible frequency air-conditioner load group, calculates and becomes
The target power of frequency air conditioner load group and the difference of actual power；
It is fair whether the absolute value of the difference of step 10, the target power for judging convertible frequency air-conditioner load group and actual power is less than
Perhaps error amount, if thening follow the steps 11 not less than allowable error value, if being less than allowable error value terminates to convertible frequency air-conditioner load
The control of group；
Step 11, according to the target power of convertible frequency air-conditioner load group and the difference of actual power to as leader's intelligent body
The temperature knots modification of convertible frequency air-conditioner is modified, and repeats step 2 to step 10.
Scheme, step are advanced optimized as a kind of consistency control method of convertible frequency air-conditioner load group of the present invention
3 is specific as follows:
(1) adjacency matrix A is formed according to the link topology between each convertible frequency air-conditioner；N platform convertible frequency air-conditioner if it exists, then
Adjacency matrix A should be the matrix of a n × n, and the element in adjacency matrix is a (i, j), wherein i, j=1 ..., n, diagonal line
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 number of edges between j-th of convertible frequency air-conditioner；
(2) it is obtained according to the adjacency matrix A that the link topology between convertible frequency air-conditioner each in convertible frequency air-conditioner load group is formed
It is the matrix of a n × n to Laplacian Matrix L, L, the element in Laplacian Matrix is l (i, j),
L (i, j)=- a (i, j) (2)
(3) row stochastic matrix D is formed according to the Laplacian Matrix L of formation, D is the matrix of a n × n, 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 t momentk
Afterwards, the t+1 moment is transmitted to the temperature knots modification of remaining convertible frequency air-conditioner are as follows:
ΔTjIt (t) is the temperature knots modification of t moment jth platform convertible frequency air-conditioner, formula (4) is the change as non-leader's intelligent body
Frequency air-conditioning determines the temperature knots modification of itself by being in communication with each other with the convertible frequency air-conditioner being directly connected to.
Scheme, step are advanced optimized as a kind of consistency control method of convertible frequency air-conditioner load group of the present invention
Compressor frequency calculating process of each convertible frequency air-conditioner at respective temperature in 7 are as follows:
(1) refrigerating capacity and room temperature relationship
Contacting for refrigerating of convertible frequency air conditioner amount and room temperature, the work of convertible frequency air-conditioner are established using single order classics equivalent heat parameter model
It is that continuously, i.e., there is no run-stopping status if work, therefore the single order under convertible frequency air-conditioner effect is classical as state
Equivalent heat parameter model are as follows:
Wherein,For the indoor air temperature at t+1 moment；For t+1 moment outdoor temperature；For the frequency conversion of t moment
Air conditioner refrigerating amount；R is the equivalent thermal resistance in room locating for convertible frequency air-conditioner；C is the equivalent thermal capacitance in room locating for convertible frequency air-conditioner, and e is certainly
The right truth of a matter, formula (5) reflect the relationship of refrigerating capacity and room temperature；
(2) relationship of refrigerating of convertible frequency air conditioner amount and compressor frequency
Compressor frequency and the relationship of refrigerating of convertible frequency air conditioner amount are described using quadratic function, specific function representation
Formula are as follows:
Wherein, fairFor frequency converting air-conditioner compressor frequency；A, b and c indicates that the primary relationship of refrigerating capacity and compressor frequency is normal
Number, 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, maintain room temperature to remain convertible frequency air-conditioner temperature institute to acquire
The compressor frequency needed；Therefore the relationship met for each variable in formula (5) are as follows:
Formula (7) and formula (8) are substituted into formula (5) and obtained:
Formula (6) is combined with formula (9) and is obtained:
Wherein, fairAs in convertible frequency air-conditioner temperature TsUnder compressor frequency.
Scheme, step are advanced optimized as a kind of consistency control method of convertible frequency air-conditioner load group of the present invention
The power calculation of convertible frequency air-conditioner in 8 are as follows:
Wherein, PairIt is as T in convertible frequency air-conditioner temperaturesAnd outdoor temperature is ToutUnder convertible frequency air-conditioner power, m and n table
Show the primary relationship constant of convertible frequency air-conditioner power and compressor frequency, value is different with different convertible frequency air-conditioner types.
Scheme, step are advanced optimized as a kind of consistency control method of convertible frequency air-conditioner load group of the present invention
The target power of convertible frequency air-conditioner load group in 9 and the difference of actual power calculate are as follows:
Wherein, Δ P (t) is the difference between the target power and actual power of convertible frequency air-conditioner group's load group of t moment,
PgoalFor the target power of convertible frequency air-conditioner load group,For the performance number of i-th convertible frequency air-conditioner t moment.
Scheme, step are advanced optimized as a kind of consistency control method of convertible frequency air-conditioner load group of the present invention
Change amount correction method as the temperature of the convertible frequency air-conditioner of leader's intelligent body in 11 are as follows:
Wherein, Δ TiIt (t+1) is the temperature knots modification of the convertible frequency air-conditioner at t+1 moment, λ is correction factor, and k is represented as neck
Lead the convertible frequency air-conditioner serial number of intelligent body.
The invention adopts the above technical scheme compared with prior art, has following technical effect that
(1) method provided by the invention is, it can be achieved that effective use to widely distributed, large number of convertible frequency air-conditioner；Respectively
Platform convertible frequency air-conditioner is as an intelligent body, by the way that the control instruction of control centre's sending can be obtained with neighbouring agent communication,
It is in the present invention convertible frequency air-conditioner temperature knots modification, to change self-operating state, target power is realized, without every
Platform convertible frequency air-conditioner is connected directly with control centre, need to only guarantee 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 publication；
(2) control can be effectively reduced in a kind of consistency control method of the convertible frequency air-conditioner load group provided through the invention
The cost of convertible frequency air-conditioner group cost-effectively using convertible frequency air-conditioner resource and makes convertible frequency air-conditioner temperature in preset temperature range
It is interior, select temperature knots modification that can guarantee power target distributional equity as consistency variable, so that realizing target power
When it is identical to the influence degree of each convertible frequency air-conditioner.
Detailed description of the invention
Fig. 1 is the consistency control method general flow chart of convertible frequency air-conditioner load group of the invention.
Fig. 2 is 10 convertible frequency air-conditioner link topologies.
Fig. 3 is that convertible frequency air-conditioner corresponds to room temperature change procedure under working conditions of compressor.
Fig. 4 is ten convertible frequency air-conditioner load group changed power schematic diagrames in iterative process.
Fig. 5 is the temperature change schematic diagram of ten convertible frequency air-conditioners in iterative process.
Specific embodiment
Technical solution of the present invention is described in further detail with specific embodiment with reference to the accompanying drawing, so that ability
The technical staff in domain can better understand the present invention and can be practiced, but illustrated embodiment is not as to limit of the invention
It is fixed.
Embodiment is carried out according to step of the present invention:
A kind of consistency control strategy of convertible frequency air-conditioner load group includes the following steps (to be change of the invention as shown in Figure 1
The general flow chart of the consistency 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
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；
Temperature knots modification as the convertible frequency air-conditioner of leader's intelligent body is passed to remaining using consistency algorithm by step 3
Convertible frequency air-conditioner, remaining convertible frequency air-conditioner are non-leader's intelligent body；
The initial temperature of each convertible frequency air-conditioner is added with temperature knots modification and acquires all convertible frequency air-conditioner temperature by step 4, sentences
Whether each convertible frequency air-conditioner temperature of breaking is in preset temperature range [Tmin,Tmax] in, it is held if not in preset temperature range
Row step 5, if thening follow the steps 6 in preset temperature range；
Step 5, convertible frequency air-conditioner temperature are greater than preset temperature range upper limit TmaxConvertible frequency air-conditioner temperature is then set as 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 as temperature range lower limit
Tmin；
All convertible frequency air-conditioner temperature values in convertible frequency air-conditioner load group are set as itself initial temperature and received by step 6
The sum of temperature knots modification；
Step 7 calculates compressor frequency of each convertible frequency air-conditioner at respective temperature, according to the calculated compressor
Frequency modifies to the frequency of compressor；
Step 8, the power that each convertible frequency air-conditioner is acquired by the compressor frequency of each convertible frequency air-conditioner；
Step 9 carries out the power of each convertible frequency air-conditioner to be added the actual power for obtaining convertible frequency air-conditioner load group, calculates and becomes
The target power of frequency air conditioner load group and the difference of actual power；
It is fair whether the absolute value of the difference of step 10, the target power for judging convertible frequency air-conditioner load group and actual power is less than
Perhaps error amount, if thening follow the steps 11 not less than allowable error value, if being less than allowable error value terminates to convertible frequency air-conditioner load
The control of group；
Step 11, according to the target power of convertible frequency air-conditioner load group and the difference of actual power to 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) setting in step 2 as the temperature knots modification of the convertible frequency air-conditioner of leader's intelligent body are as follows:
Each of convertible frequency air-conditioner load group convertible frequency air-conditioner individual is considered as intelligent body, can independently carry out connecing for information
It receives and transmits, knows that itself compressor needs the frequency set and can change the compressor frequency of itself by the knots modification of temperature.Make
There should be the access of any convertible frequency air-conditioner of at least one arrival for the convertible frequency air-conditioner of leader's intelligent body, thus the equal energy of remaining convertible frequency air-conditioner
Receive the information of temperature knots modification.0 is set as the temperature knots modification initial value of leader's intelligent body.
Specifically, the initial temperature of convertible frequency air-conditioner group is set as 25 DEG C, leader's intelligent body convertible frequency air-conditioner and non-leader's intelligence
The temperature knots modification of energy body air-conditioning is set as 0 degree Celsius.
(2) the temperature knots modification received in step 3 using consistency algorithm transmitting leader's intelligent body convertible frequency air-conditioner is specific
Process are as follows:
1) adjacency matrix A is formed according to the link topology between convertible frequency air-conditioner load group individual.The frequency conversion of n platform is empty if it exists
It adjusts, then adjacency matrix A should be the matrix of a n × n.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, the connection between convertible frequency air-conditioner i and convertible frequency air-conditioner j
Number of edges.A (i, j) is a 0-1 matrix for general finite simple topology figure.
Specifically, specific link topology is as shown in Fig. 2, wherein No. 3 intelligent bodies are neck by taking ten convertible frequency air-conditioners as an example
Lead intelligent body.A matrix for being then 10 × 10 by the adjacency matrix that the link topology of 10 air-conditionings is formed, it is specific to express
Formula are as follows:
2) Laplce's square is obtained according to the adjacency matrix A that the link topology between convertible frequency air-conditioner load group individual is formed
Battle array L.L is similarly the matrix of a n × n, the element l (i, j) in Laplacian Matrix, wherein i, j=1 ..., n.
L (i, j)=- a (i, j) (2)
Specifically, the Laplacian Matrix that link topology is formed according to fig. 2 are as follows:
3) row stochastic matrix D is formed according to the Laplacian Matrix L of formation.D is similarly the matrix of a n × n, and row is random
Element d (i, j) in matrix, wherein i, j=1 ..., n.
Specifically, the row stochastic matrix that link topology is formed according to fig. 2 are as follows:
4) k-th of leader's intelligent body convertible frequency air-conditioner, 1≤k≤n, in the temperature knots modification Δ T for receiving t momentkAfterwards, when t+1
Carve the temperature knots modification for being transmitted to non-leader's intelligent body convertible frequency air-conditioner are as follows:
Due to the convertible frequency air-conditioner temperature knots modification Δ T as leader's intelligent bodykIt needs 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 determines that the temperature of itself changes by being in communication with each other with the convertible frequency air-conditioner as intelligent body 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 is more than the processing mode of preset 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 preset 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 as: the corresponding preset temperature range of convertible frequency air-conditioner be [22,
28], Ts0It is 25 DEG C.
(4) the convertible frequency air-conditioner temperature in step 6 is set as:
Ts=Ts0+ Δ T, Tmin≤Ts0+ΔT≤Tmax (7)
(5) the frequency converting air-conditioner compressor frequency calculating process in step 7 are as follows:
1) refrigerating capacity and room temperature relationship are established
Contacting for refrigerating of convertible frequency air conditioner amount and room temperature, the work of convertible frequency air-conditioner are established using single order classics equivalent heat parameter model
It is that continuously, i.e., there is no run-stopping status if work, therefore the single order under convertible frequency air-conditioner effect is classical as state
Equivalent heat parameter model are as follows:
WhereinFor the indoor air temperature at t+1 moment, DEG C；For t+1 moment outdoor temperature, DEG C；For t moment
Refrigerating of convertible frequency air conditioner amount, kW；R is the equivalent thermal resistance in room locating for convertible frequency air-conditioner, DEG C/kW；C is room locating for convertible frequency air-conditioner
Equivalent thermal capacitance, kWh/ DEG C.
Air conditioner refrigerating amount and the relationship 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) and formula (9) are connected and can be obtained
The relationship of convertible frequency air-conditioner power and room temperature.
2) relationship of air-conditioning power, refrigerating capacity and compressor frequency is established
The relationship of compressor frequency and air-conditioning power is described using linear function, using quadratic function pair
Compressor frequency and the relationship of air conditioner refrigerating amount are described, specific function expression are as follows:
Pair=nfair+m (10)
Wherein fairFor frequency converting air-conditioner compressor frequency, Hz；M and n indicates the primary relationship of air-conditioning power and compressor frequency
Constant, value are different with different air-conditioning types；A, b and c indicates that the primary relationship of refrigerating capacity and compressor frequency is normal
Number, value are 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, thus acquire maintain room temperature to remain air-conditioner temperature needed for compressor frequency.
Therefore the relationship that should meet for each variable in formula (8) are as follows:
Formula (12) and formula (13) are substituted into formula (8) and can be obtained:
Formula (14) and formula (11) combination can be obtained:
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 as: outdoor temperature ToutIt is 32 DEG C, room locating 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 locating for convertible frequency air-conditioner is in [0.16,0.18]
It is inside randomly generated, primary relationship constant a, b, c of refrigerating capacity and compressor frequency are respectively [- 0.3 × 10-3,-0.23×10-3], [0.050,0.055], be randomly generated in [0.2,0.25] range.Assuming that room 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 found out
The change procedure of room temperature is as shown in Figure 3 under rate operating condition.
(6) power calculation of the convertible frequency air-conditioner in step 8 are as follows:
P in formulaairIt is as T in convertible frequency air-conditioner temperaturesAnd outdoor temperature is ToutUnder convertible frequency air-conditioner power.
Specifically, the parameter in formula (16) is set as: primary relationship constant m, n of air-conditioning power and compressor frequency exist
It is randomly generated in [0.05,0.06], [0.015,0.018] range.
(7) difference of the convertible frequency air-conditioner load group target power in step 9 and actual power calculates are as follows:
Δ P (t) is the difference between the convertible frequency air-conditioner multiple targets power and actual power of t moment, 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 moment.
Specifically, target power P in formula (17)goalIt is set as 3kW.
(8) leader's intelligent body convertible frequency air-conditioner temperature in step 11 changes amount correction method are as follows:
Δ T in formulaiIt (t+1) 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 serial number of corresponding 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 as 0.1,
In view of actual communication speed, the time required for each iteration is set as 0.01s in the iteration for carrying out discrete number, is schemed
4 and Fig. 5 is that effect is embodied in this strategy, and wherein Fig. 4 is that the overall power variation of ten convertible frequency air-conditioners in an iterative process is shown
It is intended to.As can be seen from the figure convertible frequency air-conditioner group from initial gain value reaches target power in the time close to 3s, reacts
Speed or comparatively faster, can satisfy rate request not is extra high power regulation task.Fig. 5 is in an iterative process
The temperature variation schematic diagram of ten convertible frequency air-conditioners.It can be seen from the figure that the temperature knots modification of ten convertible frequency air-conditioners tends to one
It causes, and convertible frequency air-conditioner temperature ensure that task while realizing power regulation target without departing from preset temperature range
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 provides is negative
The consistency control strategy of lotus group can guarantee target power task distributional equity well, effectively by widely distributed change
Frequency air-conditioning resource combines, and is all connected with leader's intelligent body convertible frequency air-conditioner without by every convertible frequency air-conditioner, thus efficiently fair
Realize target power in ground.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, several simple deductions or substitution can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (6)
1. a kind of consistency control method of convertible frequency air-conditioner load group, which comprises 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；
Temperature knots modification as the convertible frequency air-conditioner of leader's intelligent body is passed to remaining frequency conversion using consistency algorithm by step 3
Air-conditioning, remaining convertible frequency air-conditioner are non-leader's intelligent body；
The initial temperature of each convertible frequency air-conditioner is added with temperature knots modification and acquires all convertible frequency air-conditioner temperature by step 4, and judgement is each
Whether a convertible frequency air-conditioner temperature is in preset temperature range [Tmin,Tmax] in, step is executed if not in preset temperature range
Rapid 5, if thening follow the steps 6 in preset temperature range；
Step 5, convertible frequency air-conditioner temperature are greater than preset temperature range upper limit TmaxThen convertible frequency air-conditioner temperature is set as 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 as temperature range lower limit Tmin；
Step 6, the temperature that all convertible frequency air-conditioner temperature values in convertible frequency air-conditioner load group are set as itself initial temperature and are received
Spend the sum of knots modification；
Step 7 calculates compressor frequency of each convertible frequency air-conditioner at respective temperature, according to the calculated compressor frequency
It modifies to the frequency of compressor；
Step 8, the power that each convertible frequency air-conditioner is acquired by the compressor frequency of each convertible frequency air-conditioner；
Step 9 carries out the power of each convertible frequency air-conditioner to be added the actual power for obtaining convertible frequency air-conditioner load group, and it is empty to calculate frequency conversion
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 thening follow the steps 11 not less than allowable error value, if being less than allowable error value terminates to convertible frequency air-conditioner load group
Control；
Step 11, according to the target power of convertible frequency air-conditioner load group and the difference of actual power 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 consistency control method of convertible frequency air-conditioner load group according to claim 1, which is characterized in that step 3
It is specific as follows:
(1) adjacency matrix A is formed according to the link topology between each convertible frequency air-conditioner；N platform convertible frequency air-conditioner if it exists, then abut
Matrix A should be the matrix of a n × n, and the element in adjacency matrix is a (i, j), 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 number of edges between a convertible frequency air-conditioner；
(2) it is drawn according to the adjacency matrix A that the link topology between convertible frequency air-conditioner each in convertible frequency air-conditioner load group is formed
This matrix L of pula, L are the matrix of a n × n, and the element in Laplacian Matrix is l (i, j),
L (i, j)=- a (i, j) (2)
(3) row stochastic matrix D is formed according to the Laplacian Matrix L of formation, D is the matrix of a n × n, in row stochastic matrix
Element be 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 t momentkAfterwards, t+1
Moment is transmitted to the temperature knots modification of remaining convertible frequency air-conditioner are as follows:
ΔTjIt (t) is the temperature knots modification of t moment jth platform convertible frequency air-conditioner, formula (4) is the frequency conversion sky as non-leader's intelligent body
Adjust the temperature knots modification that itself is determined by being in communication with each other with the convertible frequency air-conditioner being directly connected to.
3. a kind of consistency control method of convertible frequency air-conditioner load group according to claim 1, which is characterized in that step 7
In compressor frequency calculating process of each convertible frequency air-conditioner at respective temperature are as follows:
(1) refrigerating capacity and room temperature relationship
Contacting for refrigerating of convertible frequency air conditioner amount and room temperature, the work shape of convertible frequency air-conditioner are established using single order classics equivalent heat parameter model
State is that continuously, i.e., there is no run-stopping status if work, therefore the single order classics under convertible frequency air-conditioner effect are equivalent
Physochlaina infudibularis exponential model are as follows:
Wherein,For the indoor air temperature at t+1 moment；For t+1 moment outdoor temperature；For the convertible frequency air-conditioner of t moment
Refrigerating capacity；R is the equivalent thermal resistance in room locating for convertible frequency air-conditioner；C is the equivalent thermal capacitance in room locating for convertible frequency air-conditioner, and e is nature bottom
Number, formula (5) reflect the relationship of refrigerating capacity and room temperature；
(2) relationship of refrigerating of convertible frequency air conditioner amount and compressor frequency
Compressor frequency and the relationship of refrigerating of convertible frequency air conditioner amount are described using quadratic function, specific function expression
Are as follows:
Wherein, fairFor frequency converting air-conditioner compressor frequency；A, b and c indicates the primary relationship 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 preset one
Outdoor temperature not time to time change in the section time, thus acquire maintain room temperature to remain convertible frequency air-conditioner temperature needed for pressure
Contracting unit frequency；Therefore the relationship met for each variable in formula (5) are as follows:
Formula (7) and formula (8) are substituted into formula (5) and obtained:
Formula (6) is combined with formula (9) and is obtained:
Wherein, fairAs in convertible frequency air-conditioner temperature TsUnder compressor frequency.
4. a kind of consistency control method of convertible frequency air-conditioner load group according to claim 3, which is characterized in that step 8
The power calculation of middle convertible frequency air-conditioner are as follows:
Wherein, PairIt is as T in convertible frequency air-conditioner temperaturesAnd outdoor temperature is ToutUnder convertible frequency air-conditioner power, m and n indicate frequency conversion
The primary relationship constant of air-conditioning power and compressor frequency, value are different with different convertible frequency air-conditioner types.
5. a kind of consistency control method of convertible frequency air-conditioner load group according to claim 1, which is characterized in that step 9
In convertible frequency air-conditioner load group target power and actual power difference calculate are as follows:
Wherein, Δ P (t) is the difference between the target power and actual power of convertible frequency air-conditioner group's load group of t moment, PgoalFor
The target power of convertible frequency air-conditioner load group,For the performance number of i-th convertible frequency air-conditioner t moment.
6. a kind of consistency control method of convertible frequency air-conditioner load group according to claim 5, which is characterized in that step 11
The temperature of the middle convertible frequency air-conditioner as leader's intelligent body changes amount correction method are as follows:
Wherein, Δ TiIt (t+1) is the temperature knots modification of the convertible frequency air-conditioner at t+1 moment, λ is correction factor, and k is represented as leader's intelligence
The convertible frequency air-conditioner serial number of energy body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710243572.6A CN107101324B (en) | 2017-04-14 | 2017-04-14 | A kind of consistency control method of convertible frequency air-conditioner load group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710243572.6A CN107101324B (en) | 2017-04-14 | 2017-04-14 | A kind of consistency control method of convertible frequency air-conditioner load group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107101324A CN107101324A (en) | 2017-08-29 |
| CN107101324B true CN107101324B (en) | 2019-03-26 |
Family
ID=59675337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710243572.6A Active CN107101324B (en) | 2017-04-14 | 2017-04-14 | A kind of consistency control method of convertible frequency air-conditioner load group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107101324B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105020859B (en) * | 2015-08-04 | 2017-11-17 | 深圳供电局有限公司 | It is a kind of based on etc. comfort level loss principle central air-conditioning load cut down method for regulating temperature |
| CN105042800B (en) * | 2015-09-01 | 2017-11-07 | 东南大学 | Convertible frequency air-conditioner load modeling and progress control method based on demand response |
-
2017
- 2017-04-14 CN CN201710243572.6A patent/CN107101324B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107101324A (en) | 2017-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109631282B (en) | Central air-conditioning system control method and system, equipment and storage medium thereof | |
| CN110288164B (en) | Predictive control method for building air-conditioning refrigeration station system | |
| CN108413567B (en) | Central air conditioner cost-saving optimization method and system based on Internet of things | |
| CN107101324B (en) | A kind of consistency control method of convertible frequency air-conditioner load group | |
| AU2010362490B2 (en) | Energy-saving optimized control system and method for refrigeration plant room | |
| CN102734890B (en) | Fuzzy control method and device for chilled water of central air-conditioning and central air-conditioning system | |
| CN105091209B (en) | A kind of control system and method based on Air-conditioning Load Prediction | |
| CN101655272A (en) | Energy-saving control management system of network central air conditioner and method thereof | |
| WO2023160110A1 (en) | System frequency modulation method and system for thermostatically controlled load cluster, and electronic device and storage medium | |
| CN107092991A (en) | A kind of adaptive economic load dispatching distribution method of intelligent grid | |
| CN108168052A (en) | A kind of central air-conditioning refrigeration system optimal on-off control method | |
| CN112361566B (en) | Intelligent control method of air conditioning system and related device | |
| CN107906810A (en) | A kind of energy saving group control method of salt water cooling system of more handpiece Water Chilling Units cooperations | |
| CN110454959A (en) | A kind of air conditioner energy saving control method and device | |
| CN104236020A (en) | Method and device for controlling air conditioning system | |
| CN105115100A (en) | Central air conditioning equipment control system and method based on intelligent optimization | |
| CN110848895B (en) | Non-industrial air conditioner flexible load control method and system | |
| CN108253519A (en) | Power consumption control method based on electric heating | |
| TW201027014A (en) | Method for managing air conditioning power consumption | |
| CN114543274A (en) | Temperature and humidity optimization control method and system for building central air conditioner | |
| CN111415036B (en) | Load optimization distribution method for parallel connection cold machines of central air-conditioning system | |
| CN107763799A (en) | A kind of building air conditioning flexible control system | |
| CN115218270B (en) | Distributed electric heating intelligent group control method and system for terminal substation level | |
| CN112923533B (en) | Multi-agent-based hierarchical distributed optimization control method for central air-conditioning system | |
| Li et al. | Thermal comfort control based on MEC algorithm for HVAC systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |