CN110513767A - Heat supply network hydraulic equilibrium based on thermal substation drag characteristic regulates and controls method and system - Google Patents
Heat supply network hydraulic equilibrium based on thermal substation drag characteristic regulates and controls method and system Download PDFInfo
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Abstract
The invention belongs to heat supply automation control areas, and in particular to a kind of heat supply network hydraulic equilibrium regulation method and system based on thermal substation drag characteristic, wherein the heat supply network hydraulic equilibrium based on thermal substation drag characteristic regulates and controls method, comprising: setting global coordination system；The actual value of each thermal substation characteristics resistance coefficient of local analytics；By the target value of each thermal substation characteristics resistance coefficient of global coordination system-computed, and generate control strategy；And heat supply network hydraulic equilibrium is carried out according to control strategy and actual value and is regulated and controled online, realize the hydraulic equilibrium regulation based on characteristics resistance coefficient, because of the characteristics of characteristics resistance coefficient is not by the coupling influence of other thermal substations adjusting, it is possible to prevente effectively from lag and oscillation problem in hydraulic equilibrium regulation, realize the hydraulically balanced quick regulation of heat supply network.
Description
Technical field
The invention belongs to heat supply automation control areas, and in particular to a kind of heat supply network waterpower based on thermal substation drag characteristic
Balance regulation method and system.
Background technique
Central heating system is mainly made of heat source, thermal substation and heat user, by heating system level-one net that heat source is raw
The heat (generally by hot water storage) of production is transported to thermal substation, then heat is conveyed to heat user by second level net.Central heating
The typical control methods of system are as follows: the control strategy that the next thermal substation is sent by centralized control center's scheduling system can be tracking heat
Power station secondary side supply water temperature, return water temperature, mean temperature etc. are the control strategy fed back, or tracking thermal substation one with temperature
The control strategy of secondary effluent amount is controlled by the controller of thermal substation and is executed using PID/feedback control algolithm.Due to thermal substation
Geographical location it is more dispersed, heat source side temperature, which is transferred to thermal substation, very strong delay effect, therefore, according to temperature as control
Parameter processed carries out feedback regulation, has very big hysteresis quality, is unfavorable for the accuracy controlling of heat supply network；And track the control of thermal substation flow
System strategy, due to coupling influence existing between each thermal substation, easily causes frequent fluctuation, can not also obtain preferable control effect
Fruit.
The hydraulic equilibrium regulation process of central heating network is substantially to obtain corresponding each heat according to heat demand conversion
Power station assignment of traffic relationship, this relations of distribution are that the drag characteristic of pipe network and the drag characteristic of each thermal substation codetermine.
Using the flow of feedback control tracking thermal substation, adjusted due to there are coupling effect, will receive other thermal substations between thermal substation
The influence of movement needs to be adjusted several times repeatedly and can be only achieved balance.And adjusted based on drag characteristic, then between thermal substation mutually solely
It is vertical, if the drag characteristic matching relationship between each thermal substation can be calculated accurately, the assignment of traffic combination of needs can be formed.
Thermal substation drag characteristic is related to a series of resistance pieces such as interior dirt separator, heat exchanger, valve of standing, and is finally reflected the station flow and pressure
The synchronous variation of difference, so, in practical heat supplying process, the drag characteristic of thermal substation only with the valve position of adjustable gate (or water
Pump frequency) it is related, and it is unrelated with the adjusting of other thermal substations.
Therefore, need to design a kind of new heat supply network hydraulic equilibrium based on thermal substation drag characteristic based on above-mentioned technical problem
Regulate and control method and system.
Summary of the invention
The object of the present invention is to provide a kind of, and the heat supply network hydraulic equilibrium based on thermal substation drag characteristic regulates and controls method and system.
In order to solve the above-mentioned technical problems, the present invention provides a kind of heat supply network hydraulic equilibriums based on thermal substation drag characteristic
Regulation method characterized by comprising
Global coordination system is set；
The actual value of each thermal substation characteristics resistance coefficient of local analytics；
By the target value of each thermal substation characteristics resistance coefficient of global coordination system-computed, and generate control strategy；And
Heat supply network hydraulic equilibrium is carried out according to control strategy and actual value to regulate and control online.
Further, it is described setting global coordination system method include: beyond the clouds server end setting global coordination system,
Foundation and the consistent thermal-hydraulic computation model of practical heat supply network structure in global coordination system, and dock heat supply network digit up and down
According to heat supply network progress simulation analysis, i.e.,
The heat supply network knot with physics pipe network structure and the consistent virtualization of physical equipment is established in global coordination system beyond the clouds
Structure model and virtual unit set corresponding property parameters, operation number to each virtual unit to constitute thermal-hydraulic computation model
According to duty parameter, heat supply network structural model is set to emulate the operating condition of practical heat supply network, and calculate the operation characteristic of equipment, heat supply network biography
Warm status and flow regime, heating network pressure distribution, the drag characteristic distribution of thermal substation.
Further, the method for the actual value of each thermal substation characteristics resistance coefficient of the local analytics includes:
Data processing module is added in each heat-exchanging station controlling device, each thermal substation operation data is carried out at local analytics
Reason, analyzes the actual value of thermal substation characteristics resistance coefficient in marginal end, i.e., in real time
The actual value ζ of each thermal substation characteristics resistance coefficient is calculated by the controller of each thermal substationmi；
Then the actual value of all thermal substations is ζm=[ζm1,ζm2,ζm3,...,ζmi,...,ζmn]；
Wherein, n is the thermal substation quantity of heat supply network, i ∈ n；
U is weather duty parameter；For the measured discharge of i-th of thermal substation；
It is i-th of thermal substation actual measurement for return water pressure difference.
Further, the target value by each thermal substation characteristics resistance coefficient of global coordination system-computed, and generate control
Making tactful method includes:
By global coordination system, the demand load and demand volume of each thermal substation are calculated, i.e.,
Wherein:
Φ is the calculating function of demand load and demand volume；
Q is demand load, is expressed as Q=[Q1,Q2,...,Qi,...,Qn], unit GJ/h；
Q is demand volume, is expressed as q=[q1,q2,...,qi,...,qn], unit t/h；
F is the identification model of demand volume, by the U in history run operating condition,TfData training obtain；
For thermal substation level-one net supply water temperature, unit is DEG C；
For thermal substation second level net return water temperature, unit is DEG C；
TfThe cell Average indoor temperature where thermal substation, unit are DEG C.
Further, the target value by each thermal substation characteristics resistance coefficient of global coordination system-computed, and generate control
The method for making strategy further include:
Demand pressure differential deltap p is calculated by global coordination system access boundary condition, i.e.,
Δpi=Γ (Ps,Pr,q,Q,D),i∈n；
Wherein:
Γ is heating system pipe network Simulation Calculation function；
PSFor pressure of supply water, it is expressed as Ps=[Ps1,Ps2,...,Psi,...,Psn]；
PrFor pressure of return water, it is expressed as Pr=[Pr1,Pr2,...,Pri,...,Prn]；
Δ p is demand pressure difference, is expressed as Δ p=[Δ p1,Δp2,...,Δpi,...,Δpn]；
D is the infrastructure data of heat supply network；
The boundary condition includes: heat source side supply water temperature T, pressure of supply water Ps, pressure of return water Pr and demand volume q.
Further, the target value by each thermal substation characteristics resistance coefficient of global coordination system-computed, and generate control
The method for making strategy further include:
Pass through the calculating function phi of demand load and demand volume and heating system pipe network Simulation Calculation function gamma, meter
Calculate the calculating parameter [q for obtaining i-th of thermal substation target resistance characteristici,Δpi]；
According to the calculating parameter of thermal substation, the target value of i-th of thermal substation characteristics resistance coefficient is calculated:
With ζgiAs the control strategy of the thermal substation, then the control strategy ζ of physics heat supply network the whole network thermal substationgAre as follows: ζg=
[ζg1,ζg2,...,ζgi,...,ζgn]。
Further, the method regulated and controled online according to control strategy and actual value progress heat supply network hydraulic equilibrium includes:
The demand volume q for predicting each thermal substation when weather duty parameter is U in real time by global coordination system, in conjunction with each
The measured discharge q of thermal substationm, calculate the hydraulic equilibrium degree of each thermal substation；
The then hydraulic equilibrium degree of i-th of thermal substation are as follows:
Work as θiWhen > ω, k=k+1, ifWhen, feedback control strategy is executed, current hydraulic equilibrium is kept, it is real
Existing heat supply network hydraulic equilibrium regulation；
Wherein, ω is single thermal substation hydraulic regime stability；K is the quantity that single operating condition is lauched dynamic balance thermal substation,
Initial value is 0；μ is heat supply network hydraulic equilibrium degree under single operating condition；ρ is waterpower stabilization of thermostatic station accounting standard；
As μ < ρ, corresponding control strategy is sent to by corresponding thermal substation by global coordination system, thermal substation according to
Control strategy completes hydraulic equilibrium regulation, to realize that heat supply network hydraulic equilibrium regulates and controls, i.e.,
According to the relationship of the actual value of thermal substation characteristics resistance coefficient and target value, the valve opening or water of thermal substation are adjusted
Pump frequency realizes the hydraulic equilibrium regulation of thermal substation；
Work as ζmi> ζgiWhen, increase the valve opening of the thermal substation or increase the frequency of water pump, reduces characteristics resistance coefficient
Actual value, so that thermal substation realizes hydraulic equilibrium；
Work as ζmi< ζgiWhen, reduce the valve opening of the thermal substation or reduce the frequency of water pump, increases characteristics resistance coefficient
Actual value, so that thermal substation realizes hydraulic equilibrium；
As the actual value ζ of the characteristics resistance coefficient of thermal substation imiWith target value ζgiDeviation be less than preset value ξ when, i.e., it is full
Sufficient formula:
Realize the hydraulic equilibrium of thermal substation i.
On the other hand, the present invention also provides a kind of heat supply network hydraulic equilibrium regulator control system based on thermal substation drag characteristic, packet
It includes:
Cloud server and controller；
The controller is arranged in thermal substation, and the cloud server is connect with the controller；
It is suitable for setting global coordination subsystem in the cloud server, and passes through each heating power of global coordination system-computed
The target value for characteristics resistance coefficient of standing, and generate control strategy；
The controller is suitable for analyzing the actual value of corresponding thermal substation characteristics resistance coefficient, and according to control strategy and reality
Actual value controls the thermal substation hydraulic equilibrium, and then realizes that heat supply network hydraulic equilibrium regulates and controls online.
The invention has the advantages that the present invention passes through setting global coordination system；Each thermal substation resistance of local analytics is special
The actual value of property coefficient；By the target value of each thermal substation characteristics resistance coefficient of global coordination system-computed, and generate control plan
Slightly；And heat supply network hydraulic equilibrium is carried out according to control strategy and actual value and is regulated and controled online, realize the water based on characteristics resistance coefficient
Dynamic balance regulation, because of the characteristics of characteristics resistance coefficient is not by the coupling influence of other thermal substations adjusting, it is possible to prevente effectively from water
Lag and oscillation problem in dynamic balance regulation, realize the hydraulically balanced quick regulation of heat supply network.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention are in specification, claims
And specifically noted structure is achieved and obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the flow chart of the heat supply network hydraulic equilibrium regulation method according to the present invention based on thermal substation drag characteristic；
Fig. 2 is the functional block diagram of cloud server and heat supply network according to the present invention；
Fig. 3 is the functional block diagram of global coordination system and thermal substation according to the present invention；
Fig. 4 is the control parameter figure of global coordination system according to the present invention and heat supply network；
Fig. 5 is the line chart of target value according to the present invention；
Fig. 6 is that heat-exchanging station controlling device equipment modulating properties access global coordination system control parameters according to the present invention show
It is intended to；
Fig. 7 is thermal substation i hydraulic equilibrium degree control flow chart according to the present invention；
Fig. 8 is the principle frame of the heat supply network hydraulic equilibrium regulator control system according to the present invention based on thermal substation drag characteristic
Figure.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1
Fig. 1 is the flow chart of the heat supply network hydraulic equilibrium regulation method according to the present invention based on thermal substation drag characteristic.
As shown in Figure 1, the present embodiment 1 provides a kind of heat supply network hydraulic equilibrium regulation side based on thermal substation drag characteristic
Method characterized by comprising setting global coordination system；The actual value of each thermal substation characteristics resistance coefficient of local analytics；Pass through
The target value of each thermal substation characteristics resistance coefficient of global coordination system-computed, and generate control strategy；And according to control strategy
Heat supply network hydraulic equilibrium is carried out with actual value to regulate and control online；Heat supply network is carried out in line computation and analysis, knot based on global coordination system
The edge calculations function of the local controller of heat supply network is closed, the hydraulic equilibrium regulation based on characteristics resistance coefficient is realized, because of resistance
Characteristic coefficient not by other thermal substations adjust coupling influence the characteristics of, it is possible to prevente effectively from hydraulic equilibrium regulation in lag with
Oscillation problem realizes the hydraulically balanced quick regulation of heat supply network, and setting global coordination system can be taken by cloud beyond the clouds
The form of business can help heat supply personnel's high-speed decision, promote enterprise's scheduling level, reduce the decision-making time of regulating and controlling heat network.
Fig. 2 is the functional block diagram of cloud server and heat supply network according to the present invention；
Fig. 3 is the functional block diagram of global coordination system and thermal substation according to the present invention；
Fig. 4 is the control parameter figure of global coordination system according to the present invention and heat supply network.
As shown in Figure 2, Figure 3 and Figure 4, in the present embodiment, the method for the setting global coordination system includes: beyond the clouds
Global coordination system is arranged in server end, establishes in global coordination system and calculates with the consistent thermal-hydraulic of practical heat supply network structure
Model (establishes " number is twin " thermal-hydraulic computation model of heat supply network), and docks heat supply network position data up and down, carries out to heat supply network
Simulation analysis, i.e., the described global coordination system includes: graphic interface, supports structure and physical equipment according to physics pipe network
(heat source, thermal substation, water pump, valve, pipeline section, threeway, flowmeter, pressure gauge, heat exchanger etc., the water pump can be circulating pump,
The valve can be regulating valve), it is established in global coordination system consistent virtual with physics pipe network structure and physical equipment
The heat supply network structural model and virtual unit of change to constitute thermal-hydraulic computation model, and are supported to set each virtual unit and be corresponded to
Property parameters, operation data and duty parameter, so that heat supply network structural model is emulated the operating condition of practical heat supply network, and can be with
Calculate operation characteristic, heat supply network heat transfer conditions and the flow regime of physical equipment, heating network pressure is distributed, the drag characteristic of thermal substation point
Cloth；
Heat source supports that setup parameter includes but is not limited to water supply flow, supply water temperature, heating demand, pressure of supply water, return water
Pressure etc.；Thermal substation supports that the parameter of setting includes but is not limited to water supply flow, drag characteristic, thermal substation load, absolute altitude etc.；Water
Pump supports that the parameter of setting includes but is not limited to inlet pressure, outlet pressure, pump capacity, lift, efficiency, frequency, water pump spy
Linearity curve, absolute altitude etc.；Valve supports that the parameter of setting includes but is not limited to valve opening, flow, pressure difference, valve types, valve
Characteristic curve, absolute altitude etc.；Pipeline section supports that the parameter of setting includes but is not limited to pipe range, caliber, wall thickness, heat insulating coefficient, resistance system
Number, viscous drag correction coefficient, absolute altitude etc.；Threeway supports that the parameter of setting includes but is not limited to absolute altitude, threeway type etc.；
Under conditions of accessing target operating condition parameter (the target operating condition parameter of heating system is generally weather duty parameter,
The global coordination system that server beyond the clouds is arranged can be by the external weather duty parameter of internet interface), global coordination system
System is supported to predict the demand load of each thermal substation, also, under the premise of conditions setting, supports through simulation calculation,
The moving law of practical heat supply network is simulated, and calculates the state parameter of heat supply network；The boundary condition is calculating input condition, including
Property parameters such as heat source, thermal substation, water pump, valve, pipeline section etc., it is described to be calculated premised on forming the closed loop calculated
State parameter includes but is not limited to flow distribution, Temperature Distribution, the pressure distribution of heat supply network, the velocity flow profile of pipeline section, section pressure difference
Distribution, thermal substation demand load, thermal substation demand volume etc.；Such as: optional boundary condition parameter are as follows: weather duty parameter, heat
Source supply water temperature, pressure of supply water, pressure of return water；Calculating parameter includes the demand volume of thermal substation, simulation calculation thermal substation pressure
Difference, the characteristics resistance coefficient for calculating thermal substation；
The global coordination system can be deployed in cloud server end, and including public cloud and private clound, be based on cloud
Computing architecture provides simulation calculation and Analysis Service interface to heating enterprise, intend carrying out the acquisition data of physics heat supply network with it is upper
The data of cloud simulation analysis are docked；Global coordination system docking centralized control center heat supply network robot control system(RCS) (passes through with the next thermal substation
Mobile network's connection), function are as follows: butt set control center heat supply network robot control system(RCS) accesses heating enterprise operation data library, obtains and supplies
The heat supply network model (the heat supply network structural model and virtual unit of physics pipe network structure and the consistent virtualization of physical equipment) of hot enterprise
With the operation data of heat supply network, input condition as global coordination system-computed characteristics resistance coefficient, wherein required heat supply system
The operation data of system includes: heat source confession, pressure of return water, heat source supply water temperature, weather duty parameter；Based on weather duty parameter,
The real-time load of thermal substation flow and thermal substation can be sought, the real-time load is related to target operating condition, is under target operating condition
Demand load；The next thermal substation is docked, send global coordination system-computed as a result, i.e. each thermal substation characteristics resistance coefficient
Target value (i.e. control strategy).
In the present embodiment, the method for the actual value of each thermal substation characteristics resistance coefficient of the local analytics includes: each
Data processing module (data processing module may include memory and processor unit), institute are added in heat-exchanging station controlling device
Stating controller can be, but not limited to using PLC, carries out local analytics processing to each thermal substation operation data, divides in real time in marginal end
The actual value of thermal substation characteristics resistance coefficient is analysed, i.e.,
The actual value ζ of each thermal substation characteristics resistance coefficient is calculated by the controller of each thermal substationmi；
Then the actual value of all thermal substations is ζm=[ζm1,ζm2,ζm3,...,ζmi,...,ζmn]；
Wherein, n is the thermal substation quantity of heat supply network, i ∈ n；
U is weather duty parameter, can be the composite measurements data such as outdoor temperature, wind speed, humidity, illumination, wind direction；For
Measured discharge (the actual measurement exit pressure of supply water of i-th of thermal substationWith exit pressure of return waterDifference)；
It is i-th of thermal substation actual measurement for return water pressure difference.
Conventional heat station internal controller equipment is only used for collecting the operation data of thermal substation, is sent in heating enterprise collection control
The heart is not handled data, only serves the function of sending and receiving data；On this basis, data analysis is carried out in thermal substation terminal,
The definitely division of labor between each system, centralized control center's robot control system(RCS) are responsible for data acquisition and are uploaded, cloud global coordination system
System (the global coordination system that server beyond the clouds is arranged) is responsible for butt set control centre data and the next thermal substation, implementation goal
The simulation calculation and parameter of operating condition issue, and therefore, add data processing module, the data of each thermal substation in the controller of thermal substation
Processing module information to be treated includes: (1) data prediction, is handled using data cleaning method measured data,
Including the cleaning and correction etc. to abnormal data, wrong data；(2) access cloud server receives the generation of global coordination system
Control strategy (i.e. the target value of thermal substation characteristics resistance coefficient), the target component as controller feedback control is tracked.
(3) store thermal substation flow, for hydraulic pressure water, pressure of return water, regulation parameter (valve opening or water pump frequency, are referred to as below
" regulation parameter "), the information such as cloud platform network information (including cloud server IP and port)；(4) measured data is read (in real time
Weather duty parameter), the actual value of each thermal substation characteristics resistance coefficient is calculated, and hinder according to the thermal substation that cloud server is sent
The target value of force characteristic coefficient instructs the next physical equipment regulation, thermal substation is made to realize hydraulic equilibrium.
Fig. 5 is the line chart of target value according to the present invention.
It is described by each thermal substation characteristics resistance coefficient of global coordination system-computed as shown in figure 5, in the present embodiment
Target value, and the method for generating control strategy includes: to calculate the demand load and demand of each thermal substation by global coordination system
Flow, i.e.,
Wherein:
Φ is the calculating function of demand load and demand volume；
Q is demand load, is expressed as Q=[Q1,Q2,...,Qi,...,Qn], unit GJ/h；
Q is demand volume, is expressed as q=[q1,q2,...,qi,...,qn], unit t/h；
F is the identification model of demand volume, by the U in history run operating condition,TfData training obtain；
For thermal substation level-one net supply water temperature, unit is DEG C；
For thermal substation second level net return water temperature, unit is DEG C；
TfThe cell Average indoor temperature where thermal substation, unit are DEG C.
In the present embodiment, the target value by each thermal substation characteristics resistance coefficient of global coordination system-computed, and
The method for generating control strategy further include:
Demand pressure differential deltap p is calculated by global coordination system access boundary condition, i.e.,
Δpi=Γ (Ps,Pr,q,Q,D),i∈n；
Wherein:
Γ is heating system pipe network Simulation Calculation function；
PSFor pressure of supply water, unit Mpa is expressed as Ps=[Ps1,Ps2,...,Psi,...,Psn]；
PrFor pressure of return water, unit Mpa is expressed as Pr=[Pr1,Pr2,...,Pri,...,Prn]；
Δ p is demand pressure difference, is expressed as Δ p=[Δ p1,Δp2,...,Δpi,...,Δpn]；
D is the infrastructure data of heat supply network, may include caliber specification, pipe range (pipe range l, unit m), thermal insulating material
Physics build-in attribute data such as material, absolute altitude etc.；
The boundary condition includes: heat source side supply water temperature T, pressure of supply water Ps, pressure of return water PrAnd demand volume q.
In the present embodiment, the target value by each thermal substation characteristics resistance coefficient of global coordination system-computed, and
The method for generating control strategy further include: emulated by the calculating function phi of demand load and demand volume and heating system pipe network
Computation model function gamma calculates the calculating parameter [q for obtaining i-th of thermal substation target resistance characteristici,Δpi]；According to thermal substation
Calculating parameter calculates the target value of i-th of thermal substation characteristics resistance coefficient:
With ζgiAs the control strategy (controlled variable of each thermal substation) of the thermal substation, then physics heat supply network the whole network thermal substation
Control strategy ζgAre as follows: ζg=[ζg1,ζg2,...,ζgi,...,ζgn]；The coefficient represents the assignment of traffic relationship between each thermal substation.
Fig. 6 is that heat-exchanging station controlling device equipment modulating properties access global coordination system control parameters according to the present invention show
It is intended to.
As shown in fig. 6, in the present embodiment, it is described to be adjusted online according to control strategy and actual value progress heat supply network hydraulic equilibrium
The method of control includes: to predict the demand volume q of each thermal substation when weather duty parameter is U in real time by global coordination system,
In conjunction with the measured discharge q of each thermal substationm, calculate the hydraulic equilibrium degree of each thermal substation；The then hydraulic equilibrium degree of i-th of thermal substation
Are as follows:
Work as θiWhen > ω, k=k+1, ifWhen, local thermal substation executes feedback control strategy, keeps current
Hydraulic equilibrium realizes the regulation of heat supply network hydraulic equilibrium；
Wherein, ω is single thermal substation hydraulic regime stability, which can be by being manually set；K is under single operating condition
The quantity of hydraulic equilibrium thermal substation, initial value 0；μ is heat supply network hydraulic equilibrium degree under single operating condition；ρ is that waterpower stabilization of thermostatic station accounts for
Than standard, which can be by being manually set；
As μ < ρ, corresponding control strategy is sent to by corresponding thermal substation by global coordination system, thermal substation according to
Control strategy completes hydraulic equilibrium regulation, to realize that heat supply network hydraulic equilibrium regulates and controls, i.e., according to the reality of thermal substation characteristics resistance coefficient
The relationship of actual value and target value, (i.e. the controller of thermal substation is to executing agency for the valve opening or water pump frequency for adjusting thermal substation
Controlled), realize the hydraulic equilibrium regulation of thermal substation；Work as ζmi> ζgiWhen, increase the valve opening of the thermal substation or increases water
Pump frequency (selected according to the actual conditions of thermal substation, the then control valve when the executing agency of thermal substation is valve, when
The executing agency of thermal substation then adjusts water pump when being water pump, such as when the executing agency of thermal substation is that electricity then adjusts electric tune when adjusting valve
The aperture of valve, at this time can the thermal substation be referred to as electricity adjust valve website, when the executing agency of thermal substation be booster pump when then adjust increasing
The frequency of press pump, at this time can the thermal substation be referred to as booster pump website), reduce characteristics resistance coefficient actual value (when resistance spy
The actual value of property coefficient reduce to it is equal with target value when, the hydraulic equilibrium of the thermal substation reaches optimum efficiency) so that thermal substation
Realize hydraulic equilibrium；Work as ζmi< ζgiWhen, reduce the valve opening of the thermal substation or reduce the frequency of water pump, increases drag characteristic
Coefficient actual value (when the actual value of characteristics resistance coefficient is increased to it is equal with target value when, the hydraulic equilibrium of the thermal substation reaches
To optimum efficiency) so that thermal substation realizes hydraulic equilibrium；
As the actual value ζ of the characteristics resistance coefficient of thermal substation imiWith target value ζgiDeviation be less than preset value ξ when, i.e., it is full
Sufficient formula:
Realize the hydraulic equilibrium of thermal substation i.
Embodiment 2
Fig. 7 is thermal substation i hydraulic equilibrium degree control flow chart according to the present invention.
As shown in fig. 7, on the basis of embodiment 1, the present embodiment 2 is said by taking i-th of thermal substation of t moment as an example
It is bright；The global coordination system that server beyond the clouds is arranged reads the newest heat supply network structural model of heating enterprise, accesses the day of t moment
Gas duty parameter Ut,Tft, it is based on function f, calculates t moment demand volume q in real timet, while calculating heat supply network under single operating condition
Hydraulic equilibrium degree μ；
As μ < ρ, the boundary condition of t moment, i.e. heat source side supply water temperature T are accessedt, confession, pressure of return water Pst、Prt, demand
Load QtWith demand volume qt, it is based on heating system pipe network Simulation Calculation function Г, i-th of thermal substation mesh when calculating t moment
Mark the calculating parameter [q of drag characteristicti,Δpti], so that the target value ζ of i-th of thermal substation characteristics resistance coefficient be calculatedgi,
And as control strategy, i-th of thermal substation is sent to by global coordination system, by the thermal substation controller according to actual value with
The relationship of target value, control executing agency adjust the hydraulic equilibrium regulation for realizing thermal substation, i.e., controller calculates the heating power in real time
The actual value ζ for characteristics resistance coefficient of standingmi, and target value is followed by controlling opening of valve (or water pump frequency) automatically, to heating power
Adjusting device of standing is controlled, it may be assumed that
Work as ζmi> ζgiWhen, increase the valve opening of the thermal substation or increases the frequency of water pump (according to the practical feelings of thermal substation
Condition is selected, the then control valve when the executing agency of thermal substation is valve, then when the executing agency of thermal substation is water pump
Water pump is adjusted, such as then adjusts the electric aperture for adjusting valve when the executing agency of thermal substation is electricity tune valve, the heating power can be claimed at this time
It stands and adjusts valve website for electricity, the frequency of booster pump is then adjusted when the executing agency of thermal substation is booster pump, the heat can be claimed at this time
Power station be booster pump website), reduce characteristics resistance coefficient actual value (when the actual value of characteristics resistance coefficient reduce to target
When being worth equal, the hydraulic equilibrium of the thermal substation reaches optimum efficiency) so that thermal substation realizes hydraulic equilibrium；
Work as ζmi< ζgiWhen, reduce the valve opening of the thermal substation or reduce the frequency of water pump, increases characteristics resistance coefficient
Actual value (when the actual value of characteristics resistance coefficient is increased to it is equal with target value when, the hydraulic equilibrium of the thermal substation reaches best
Effect) so that thermal substation realizes hydraulic equilibrium, until the t+1 moment；
At the t+1 moment, heat supply network hydraulic equilibrium situation is rejudged by global coordination system, selection uses different control plans
Slightly, and repeat based on thermal substation drag characteristic heat supply network hydraulic equilibrium regulation method, realize it is hydraulically balanced to heat supply network
Line quickly regulates and controls.
Embodiment 3
Fig. 8 is the principle frame of the heat supply network hydraulic equilibrium regulator control system according to the present invention based on thermal substation drag characteristic
Figure.
As shown in figure 8, the present embodiment 3 also provides a kind of based on thermal substation resistance on the basis of embodiment 1 and embodiment 2
The heat supply network hydraulic equilibrium regulator control system of force characteristic, comprising: cloud server and controller；The controller is arranged in thermal substation
It is interior, and the cloud server is connect with the controller；It is suitable for setting global coordination subsystem in the cloud server,
And passes through the target value of each thermal substation characteristics resistance coefficient of global coordination system-computed, and generate control strategy；The control
Device is suitable for analyzing the actual value of corresponding thermal substation characteristics resistance coefficient, and controls the thermal substation according to control strategy and actual value
Hydraulic equilibrium, and then realize that heat supply network hydraulic equilibrium regulates and controls online.
The invention has the advantages that the present invention passes through setting global coordination system；Each thermal substation resistance of local analytics is special
The actual value of property coefficient；By the target value of each thermal substation characteristics resistance coefficient of global coordination system-computed, and generate control plan
Slightly；And heat supply network hydraulic equilibrium is carried out according to control strategy and actual value and is regulated and controled online, realize the water based on characteristics resistance coefficient
Dynamic balance regulation, because of the characteristics of characteristics resistance coefficient is not by the coupling influence of other thermal substations adjusting, it is possible to prevente effectively from water
Lag and oscillation problem in dynamic balance regulation, realize the hydraulically balanced quick regulation of heat supply network.
In several embodiments provided herein, it should be understood that disclosed system and method can also pass through
Other modes are realized.In this regard, each box in flowchart or block diagram can represent a module, section or code
A part, a part of the module, section or code includes one or more for implementing the specified logical function
Executable instruction.It should also be noted that function marked in the box can also be with not in some implementations as replacement
It is same as the sequence marked in attached drawing generation.For example, two continuous boxes can actually be basically executed in parallel, they have
When can also execute in the opposite order, this depends on the function involved.It is also noted that in block diagram and or flow chart
Each box and the box in block diagram and or flow chart combination, can function or movement as defined in executing it is dedicated
Hardware based system realize, or can realize using a combination of dedicated hardware and computer instructions.
In addition, each functional module in each embodiment of the present invention can integrate one independent portion of formation together
Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (8)
1. a kind of heat supply network hydraulic equilibrium based on thermal substation drag characteristic regulates and controls method characterized by comprising
Global coordination system is set；
The actual value of each thermal substation characteristics resistance coefficient of local analytics；
By the target value of each thermal substation characteristics resistance coefficient of global coordination system-computed, and generate control strategy；And
Heat supply network hydraulic equilibrium is carried out according to control strategy and actual value to regulate and control online.
2. heat supply network hydraulic equilibrium as described in claim 1 regulates and controls method, which is characterized in that
It is described setting global coordination system method include: beyond the clouds server end setting global coordination system, in global coordination
Established in system with the consistent thermal-hydraulic computation model of practical heat supply network structure, and dock the upper and lower position data of heat supply network, to heat supply network into
Row simulation analysis, i.e.,
The heat supply network structure mould with physics pipe network structure and the consistent virtualization of physical equipment is established in global coordination system beyond the clouds
Type and virtual unit, to constitute thermal-hydraulic computation model, to each virtual unit set corresponding property parameters, operation data with
Duty parameter makes heat supply network structural model emulate the operating condition of practical heat supply network, and calculates the operation characteristic of equipment, heat supply network heat transfer shape
State and flow regime, heating network pressure distribution, the drag characteristic distribution of thermal substation.
3. heat supply network hydraulic equilibrium as claimed in claim 2 regulates and controls method, which is characterized in that
The method of the actual value of each thermal substation characteristics resistance coefficient of local analytics includes:
Data processing module is added in each heat-exchanging station controlling device, local analytics processing, In are carried out to each thermal substation operation data
Marginal end analyzes the actual value of thermal substation characteristics resistance coefficient in real time, i.e.,
The actual value ζ of each thermal substation characteristics resistance coefficient is calculated by the controller of each thermal substationmi；
Then the actual value of all thermal substations is ζm=[ζm1,ζm2,ζm3,...,ζmi,...,ζmn]；
Wherein, n is the thermal substation quantity of heat supply network, i ∈ n；
U is weather duty parameter；For the measured discharge of i-th of thermal substation；
It is i-th of thermal substation actual measurement for return water pressure difference.
4. heat supply network hydraulic equilibrium as claimed in claim 3 regulates and controls method, which is characterized in that
The target value by each thermal substation characteristics resistance coefficient of global coordination system-computed, and the method for generating control strategy
Include:
By global coordination system, the demand load and demand volume of each thermal substation are calculated, i.e.,
Wherein:
Φ is the calculating function of demand load and demand volume；
Q is demand load, is expressed as Q=[Q1,Q2,...,Qi,...,Qn], unit GJ/h；
Q is demand volume, is expressed as q=[q1,q2,...,qi,...,qn], unit t/h；
F is the identification model of demand volume, passes through the U in history run operating condition, Ts p,TfData training obtain；
Ts pFor thermal substation level-one net supply water temperature, unit is DEG C；
For thermal substation second level net return water temperature, unit is DEG C；
TfThe cell Average indoor temperature where thermal substation, unit are DEG C.
5. heat supply network hydraulic equilibrium as claimed in claim 4 regulates and controls method, which is characterized in that
The target value by each thermal substation characteristics resistance coefficient of global coordination system-computed, and the method for generating control strategy
Further include:
Demand pressure differential deltap p is calculated by global coordination system access boundary condition, i.e.,
Δpi=Γ (Ps,Pr,q,Q,D),i∈n；
Wherein:
Γ is heating system pipe network Simulation Calculation function；
PSFor pressure of supply water, it is expressed as Ps=[Ps1,Ps2,...,Psi,...,Psn]；
PrFor pressure of return water, it is expressed as Pr=[Pr1,Pr2,...,Pri,...,Prn]；
Δ p is demand pressure difference, is expressed as Δ p=[Δ p1,Δp2,...,Δpi,...,Δpn]；
D is the infrastructure data of heat supply network；
The boundary condition includes: heat source side supply water temperature T, pressure of supply water Ps, pressure of return water PrAnd demand volume q.
6. heat supply network hydraulic equilibrium as claimed in claim 5 regulates and controls method, which is characterized in that
The target value by each thermal substation characteristics resistance coefficient of global coordination system-computed, and the method for generating control strategy
Further include:
By the calculating function phi of demand load and demand volume and heating system pipe network Simulation Calculation function gamma, calculating is obtained
Obtain the calculating parameter [q of i-th of thermal substation target resistance characteristici,Δpi]；
According to the calculating parameter of thermal substation, the target value of i-th of thermal substation characteristics resistance coefficient is calculated:
With ζgiAs the control strategy of the thermal substation, then the control strategy ζ of physics heat supply network the whole network thermal substationgAre as follows: ζg=[ζg1,
ζg2,...,ζgi,...,ζgn]。
7. heat supply network hydraulic equilibrium as claimed in claim 6 regulates and controls method, which is characterized in that
It is described to carry out the method that heat supply network hydraulic equilibrium regulates and controls online according to control strategy and actual value and include:
The demand volume q for predicting each thermal substation when weather duty parameter is U in real time by global coordination system, in conjunction with each heating power
The measured discharge q to standm, calculate the hydraulic equilibrium degree of each thermal substation；
The then hydraulic equilibrium degree of i-th of thermal substation are as follows:
Work as θiWhen > ω, k=k+1, ifWhen, feedback control strategy is executed, current hydraulic equilibrium is kept, realizes heat
The regulation of net hydraulic equilibrium；
Wherein, ω is single thermal substation hydraulic regime stability；K is the quantity that single operating condition is lauched dynamic balance thermal substation, initial value
It is 0；μ is heat supply network hydraulic equilibrium degree under single operating condition；ρ is waterpower stabilization of thermostatic station accounting standard；
As μ < ρ, corresponding control strategy is sent to by corresponding thermal substation by global coordination system, thermal substation is according to control
Strategy completes hydraulic equilibrium regulation, to realize that heat supply network hydraulic equilibrium regulates and controls, i.e.,
According to the relationship of the actual value of thermal substation characteristics resistance coefficient and target value, the valve opening or water pump frequency of thermal substation are adjusted
Rate realizes the hydraulic equilibrium regulation of thermal substation；
Work as ζmi> ζgiWhen, increase the valve opening of the thermal substation or increase the frequency of water pump, reduces the reality of characteristics resistance coefficient
Value, so that thermal substation realizes hydraulic equilibrium；
Work as ζmi< ζgiWhen, reduce the valve opening of the thermal substation or reduce the frequency of water pump, increases the reality of characteristics resistance coefficient
Value, so that thermal substation realizes hydraulic equilibrium；
As the actual value ζ of the characteristics resistance coefficient of thermal substation imiWith target value ζgiDeviation when being less than preset value ξ, that is, meet public
Formula:
Realize the hydraulic equilibrium of thermal substation i.
8. a kind of heat supply network hydraulic equilibrium regulator control system based on thermal substation drag characteristic characterized by comprising
Cloud server and controller；
The controller is arranged in thermal substation, and the cloud server is connect with the controller；
It is suitable for setting global coordination subsystem in the cloud server, and passes through each thermal substation resistance of global coordination system-computed
The target value of force characteristic coefficient, and generate control strategy；
The controller is suitable for analyzing the actual value of corresponding thermal substation characteristics resistance coefficient, and according to control strategy and actual value
The thermal substation hydraulic equilibrium is controlled, and then realizes that heat supply network hydraulic equilibrium regulates and controls online.
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