CN108150995A - A kind of distributed energy cogeneration of heat and power control system and method for reducing thermal loss - Google Patents
A kind of distributed energy cogeneration of heat and power control system and method for reducing thermal loss Download PDFInfo
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- CN108150995A CN108150995A CN201711368659.2A CN201711368659A CN108150995A CN 108150995 A CN108150995 A CN 108150995A CN 201711368659 A CN201711368659 A CN 201711368659A CN 108150995 A CN108150995 A CN 108150995A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
- F22B33/185—Combinations of steam boilers with other apparatus in combination with a steam accumulator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
- F22B35/18—Applications of computers to steam boiler control
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- Thermal Sciences (AREA)
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Abstract
The embodiment of the invention discloses a kind of distributed energy cogeneration of heat and power control system and method for reducing thermal loss, which includes:User demand processing unit calculates top steam pressure setting value that all can be needed for source user;First control unit acquires the first multi-energy data and top steam pressure setting value, and is handled it control component to generate steam boiler and regenerative apparatus respectively, and steam boiler and regenerative apparatus are controlled respectively according to control component;Second control unit acquires the second multi-energy data of steaming plant, and it is handled to generate the controlled quentity controlled variable of generating set, and generating set is controlled according to the controlled quentity controlled variable of generating set;It by the embodiment scheme, realizes and coordinates each unit operation pattern according to load variations, realize and quality of steam is provided on demand, effectively reduce steam conveying thermal loss, ensure that system adapts to different working condition requirements, safe and stable, Effec-tive Function.
Description
Technical field
The present embodiments relate to heat supply process, espespecially a kind of distributed energy cogeneration of heat and power control for reducing thermal loss
System and method.
Background technology
Cogeneration of heat and power (CHP) is that heat and electricity are generated from same fuel.CHP has many forms, is related to many technologies, still
Generally it is all based on the integration system of power generation and recuperation of heat.By the heat outputting from power generation, applied to heating or industry,
CHP factories can usually make the fossil fuel of 75-80% be converted into effective energy, the efficiency of go-go CHP factories reach 90% with
On.It is near as the gas turbine cogeneration of heat and power technology of fuel using natural gas as the important motivity device in distributed energy resource system
It is quickly grown over year, the waste heat of low taste after power generation is also used for heat supply, substantially increases the energy by the system not only output electric energy
Utilization rate has good social benefit, energy-saving benefit and environmental benefit.Gas turbine co-generation unit both can individually make
With providing heat, electric two kinds of energy simultaneously for region;More can as one kind of distributed generation resource, with the identity of a subsystem and
Other distributed generation resources play a role in distributed energy resource system together.
For cogeneration of heat and power, the most critical issue to be solved is exactly the need for meeting user as far as possible in different periods to thermoelectricity
Variation is asked, that is, rationally to solve the contradiction between the demand ratio of co-generation system thermoelectricity output ratio and user to thermoelectricity, so that
Co-generation system reaches best primary energy utilization ratio, especially in the presence of in the energy resource system of multiple distributed generation resources, needs
Coordinate the operational mode of each unit, it is also contemplated that the hysteresis quality of heat supply and load variations adverse effect.
Invention content
In order to solve the above-mentioned technical problem, an embodiment of the present invention provides a kind of distributed energy heat for reducing thermal loss
Control system and method are produced in Electricity Federation, can coordinate each unit operation pattern according to load variations, realize and provide steam matter on demand
Amount can effectively reduce steam conveying thermal loss, ensure that system adapts to different working condition requirements, safe and stable, Effec-tive Function.
In order to reach purpose of the embodiment of the present invention, an embodiment of the present invention provides a kind of distributed energy for reducing thermal loss
Source cogeneration of heat and power control system, the system include:User demand processing unit, the first control unit and the second control unit;
User demand processing unit, for calculate all can be needed for source user top steam pressure setting value, and conduct
The input of first control unit;
First control unit, for acquiring the first energy number of the steam pipe network of waste heat steam boiler and energy source user
According to, and top steam pressure setting value is acquired, the first multi-energy data and top steam pressure setting value are handled, with respectively
The control component of steam boiler and regenerative apparatus is generated, and steam boiler and regenerative apparatus are controlled respectively according to control component
System;
Second control unit for acquiring the second multi-energy data of steaming plant, and is handled the second multi-energy data,
To generate the controlled quentity controlled variable of generating set, and generating set is controlled according to the controlled quentity controlled variable of generating set;
Wherein, steam pipe network is used to provide steam energy to energy source user;Steam boiler is used to generate steam by combustion gas
The energy;Generating set is used to generate electricity by combustion gas;Waste heat steam boiler is used to be generated according to the flue gas that generating set generates
Steam energy;Regenerative apparatus is used in the steam energy surplus that steam boiler and waste heat steam boiler generate to extra steam
The energy is stored.
Optionally, user demand processing unit includes:
Data acquisition module, can the steam valve switch state signal of source user and required for acquiring each respectively
Steam pressure setting value;
Steam pressure preset value calculation device switchs shape for the steam pressure setting value according to energy source user and steam valve
State signal exports each can the current desired steam pressure setting value of source user;
Signal processor, for from all maximum vapour pressure can be selected in the current desired steam pressure setting value of source user
Power setting value, and input to the first control unit.
Optionally, the first control unit includes:The first acquisition module, first processing module and the first control being sequentially connected
Module;
First acquisition module, for acquiring the first multi-energy data;
First processing module, for the control according to the first multi-energy data and top steam pressure preset value calculation steam boiler
The control component of component and regenerative apparatus processed;
First control module, for respectively according to the control component of the control component of steam boiler and regenerative apparatus to steam
Boiler and regenerative apparatus are controlled.
Optionally, the first multi-energy data includes:Steam pressure, steam pipe network total flow and the waste heat boiler of steam pipe network steam
Steam flow amount.
Optionally, first processing module includes:
Steam pipe network pressure controller, for the vapour pressure according to top steam pressure setting value and the steam pipe network of feedback
Power calculates the steam pressure feedback control component of steam pipe network;
Steam pipe network total flow compensator, for calculating the first feed-forward control component of the steam pressure of steam pipe network;
Waste heat boiler steam flow compensator, for calculating the second feed-forward control component of the steam pressure of steam pipe network;
First calculator, for steam pressure feedback control component, the steam pressure of steam pipe network according to steam pipe network
The first feed-forward control component, steam pipe network steam pressure the second feed-forward control component and preset first algorithm carry out
First controlled quentity controlled variable calculates;
First Staged cotrol device, for obtaining the control component of steam boiler according to the first controlled quentity controlled variable calculated;
Second Staged cotrol device, for obtaining the control component of regenerative apparatus according to the first controlled quentity controlled variable calculated.
Optionally, the first control module includes:
First controller is connected with the first Staged cotrol device, is obtained for the control component according to steam boiler and feedback
The steam flow that the steam boiler obtained generates is implemented to control to steam boiler;
Second controller is connected with the second Staged cotrol device, is obtained for the control component according to regenerative apparatus and feedback
The accumulation of heat steam flow of the regenerative apparatus obtained is implemented to control to regenerative apparatus.
Optionally, the second control unit includes:The second acquisition module and Second processing module being connected with each other;
Second acquisition module, for acquiring the second multi-energy data of steaming plant;Steaming plant includes:Afterheat steam pot
Stove, steam boiler and regenerative apparatus;
Second processing module, for calculating the controlled quentity controlled variable of generating set according to the second multi-energy data of acquisition, and according to hair
The controlled quentity controlled variable of motor group controls generating set.
Optionally, the second multi-energy data includes:The steam flow and storage that waste heat boiler steam flow, steam boiler generate
The accumulation of heat steam flow of thermal.
Optionally, Second processing module includes:
Second calculator, for steam flow, the regenerative apparatus according to waste heat boiler steam flow, steam boiler generation
Accumulation of heat steam flow calculates the total steam flow of output;
Third calculator carries out the second control gauge for the total steam flow according to output and preset second algorithm
It calculates;
Signal selector, for according to the second controlled quentity controlled variable, the feedback signal of signal selector and the switching value calculated
The controlled quentity controlled variable of signal acquisition generating set, and generating set is controlled according to the controlled quentity controlled variable of generating set.
The embodiment of the present invention additionally provides a kind of distributed energy cogeneration of heat and power control method for reducing thermal loss, the party
Method includes:
Top steam pressure setting value that all can be needed for source user is calculated, and acquires waste heat steam boiler and energy use
First multi-energy data of the steam pipe network at family, and the first multi-energy data and top steam pressure setting value are handled, to divide
Not Sheng Cheng steam boiler and regenerative apparatus control component, and according to the control component respectively to steam boiler and regenerative apparatus into
Row control;And
The second multi-energy data of steaming plant is acquired, and the second multi-energy data is handled, to generate generating set
Controlled quentity controlled variable, and generating set is controlled according to the controlled quentity controlled variable of generating set;
Wherein, steam pipe network is used to provide steam energy to energy source user;Steam boiler is used to generate steam by combustion gas
The energy;Generating set is used to generate electricity by combustion gas;Waste heat steam boiler is used to be generated according to the flue gas that generating set generates
Steam energy;Regenerative apparatus is used in the steam energy surplus that steam boiler and waste heat steam boiler generate to extra steam
The energy is stored.
The embodiment of the present invention includes:User demand processing unit, for calculate all can be needed for source user maximum steam
Pressure set points, and as the input of the first control unit;First control unit, for acquiring waste heat steam boiler and the energy
First multi-energy data of the steam pipe network of user, and top steam pressure setting value is acquired, and to the first multi-energy data and maximum
Steam pressure setting value is handled, to generate the control component of steam boiler and regenerative apparatus respectively, and according to control component
Steam boiler and regenerative apparatus are controlled respectively;Second control unit, for acquiring the second multi-energy data of steaming plant,
And the second multi-energy data is handled, to generate the controlled quentity controlled variable of generating set, and according to the controlled quentity controlled variable of generating set to power generation
Unit is controlled;Wherein, steam pipe network is used to provide steam energy to energy source user;Steam boiler is used to generate by combustion gas
Steam energy;Generating set is used to generate electricity by combustion gas;Waste heat steam boiler is used for the flue gas generated according to generating set
Generate steam energy;Regenerative apparatus is used in the steam energy surplus that steam boiler and waste heat steam boiler generate to extra
Steam energy is stored.It by the embodiment scheme, realizes and coordinates each unit operation pattern according to load variations, realize
Quality of steam is provided on demand, can effectively reduce steam conveying thermal loss, the system of ensure that can adapt to different working condition requirements, pacify
Entirely, stablize, Effec-tive Function.
The other feature and advantage of the embodiment of the present invention will illustrate, also, in the following description partly from explanation
It becomes apparent in book or is understood by implementing the embodiment of the present invention.The purpose of the embodiment of the present invention and other advantages
It can realize and obtain by specifically noted structure in specification, claims and attached drawing.
Description of the drawings
Attached drawing is used for providing further understanding technical solution of the embodiment of the present invention, and one of constitution instruction
Point, for explaining the technical solution of the embodiment of the present invention together with embodiments herein, do not form to the embodiment of the present invention
The limitation of technical solution.
Fig. 1 is that the distributed energy cogeneration of heat and power control system simple structure of the reduction thermal loss of the embodiment of the present invention is shown
It is intended to;
Fig. 2 is the steam energy supply system schematic diagram of the embodiment of the present invention;
Fig. 3 is the user demand processing unit structure diagram of the embodiment of the present invention;
Fig. 4 is the first control unit structure diagram of the embodiment of the present invention;
Fig. 5 is the second control unit structure diagram of the embodiment of the present invention;
Fig. 6 is that the distributed energy cogeneration of heat and power control system detailed construction of the reduction thermal loss of the embodiment of the present invention is shown
It is intended to schematic diagram.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are more clearly understood, below in conjunction with attached drawing pair
The embodiment of the present invention is described in detail.It should be noted that in the absence of conflict, embodiment and reality in the application
Applying the feature in example mutually can arbitrarily combine.
Step shown in the flowchart of the accompanying drawings can be in the computer system of such as a group of computer-executable instructions
It performs.Also, although logical order is shown in flow charts, it in some cases, can be to be different from herein suitable
Sequence performs shown or described step.
In order to reach purpose of the embodiment of the present invention, an embodiment of the present invention provides a kind of distributed energy for reducing thermal loss
Source cogeneration of heat and power control system, as shown in Figure 1, the system includes:User demand processing unit 1, the first control unit 2 and second
Control unit 3;
User demand processing unit 1, for acquire all can be needed for source user top steam pressure setting value, and conduct
The input of first control unit 2;
First control unit 2, for acquiring first energy of the steam pipe network of waste heat steam boiler Y2 and energy source user
Data, and top steam pressure setting value is acquired, the first multi-energy data and top steam pressure setting value are handled, to divide
Not Sheng Cheng steam boiler Y3 and regenerative apparatus Y4 control component, and steam boiler Y3 and accumulation of heat are filled respectively according to control component
Y4 is put to be controlled;
Second control unit 3, for acquiring the second multi-energy data of steaming plant, and to the second multi-energy data at
Reason, to generate the controlled quentity controlled variable of generating set Y1, and controls generating set Y1 according to the controlled quentity controlled variable of generating set Y1;
Wherein, steam pipe network is used to provide steam energy to energy source user;Steam boiler Y3 is used to generate steaming by combustion gas
The vapour energy;Generating set Y1 is used to generate electricity by combustion gas;Waste heat steam boiler Y2 is used for what is generated according to generating set Y1
Flue gas generates steam energy;Regenerative apparatus Y4 is used for the steam energy surplus generated in steam boiler Y3 and waste heat steam boiler Y2
When extra steam energy is stored.
In embodiments of the present invention, as shown in Fig. 2, steam energy supply system schematic diagram for the embodiment of the present invention.Its
In, generating set Y1 and steam boiler Y3 are connected respectively with gas pipeline, and generating set Y1 can be generated electricity by combustion gas, steam
Boiler furnace Y3 can generate steam energy by combustion gas, and control is provided in the communication paths of steam boiler Y3 and gas pipeline
Valve VFb.Since generating set Y1 can carry out that in power generation process flue gas can be generated by combustion gas, in order to enable the flue gas is filled
Divide and utilize, waste heat steam boiler Y2 can be set, waste heat steam boiler Y2 is used to be produced according to the flue gas that generating set Y1 is generated
Raw steam energy.
In embodiments of the present invention, based on above-mentioned steam energy supply system, in each energy source user, such as user 1 uses
Family 2 ..., user m it is larger to steam energy demand when, waste heat steam boiler Y2 and steam boiler Y3 can be controlled to increase steam
Yield, so as to meet user demand;However, when user is smaller to steam energy demand, waste heat steam boiler can be controlled
Y2 and steam boiler Y3 reduces steam production.However for whole system, there are during certain reaction for any control
Between, therefore, not timely supplying energy or waste heat steam boiler Y2 and steam boiler Y3 have been produced within the reaction time
Superfluous energy, can so that user experience is poor, it is impossible to realize rationally energy supply.For these reasons, accumulation of heat can be set to fill
Put Y4.Regenerative apparatus Y4 is connected respectively with waste heat steam boiler Y2 and steam boiler Y3, in steam boiler Y3 and waste heat steaming
Extra steam energy is stored during the steam energy surplus that boiler furnace Y2 is generated.
In embodiments of the present invention, it based on the above, provides a kind of based on the more of above-mentioned steam energy supply system
Variable control system can acquire different multi-energy datas, so as to fulfill to the steam respectively by two control units respectively
The closed-loop control of generating set Y1, steam boiler Y3 and regenerative apparatus Y4 in energy supply system.Wherein, by generator
The control of group Y1 can realize the control to waste heat steam boiler Y2 indirectly.And the distributed energy of the reduction thermal loss
Source cogeneration of heat and power control system can be according to the top steam pressure setting value needed for all users by the use of steam as steam
Ductwork pressure setting value carries out closed loop control using Multivariable Feedforward-feedback, Staged cotrol strategy to boiler load and regenerative apparatus
System is realized and provides quality of steam on demand, can effectively reduce steam conveying thermal loss.
Optionally, as shown in Fig. 3, Fig. 6, user demand processing unit 1 can include:
Data acquisition module DD1, for acquiring the steam valve switch state signal of each energy source user and institute respectively
It is required that steam pressure setting value.
Steam pressure preset value calculation device Di switchs for the steam pressure setting value according to energy source user and steam valve
Status signal exports each can the current desired steam pressure setting value of source user.
In embodiments of the present invention, steam pressure preset value calculation device Di includes calculator D1~Dm, wherein, m is just whole
Number represents m energy source user.As shown in figure 3, Pisp is the steam pressure setting value of i-th of energy source user, Xi is i-th of energy
The steam valve switch state signal of source user entrance, input 1 and input 2 respectively as calculator Di.When Xi is ON, steam
The output DiO=Pisp of steam pressure preset value calculation device Di, when Xi is OFF, DiO=0.
Signal processor DD2, for calculate all can the current desired steam pressure setting value of source user, i.e., from whole energy
The top steam pressure setting value is selected in the current desired steam pressure setting value of source user, and inputs to the first control list
Member.
In embodiments of the present invention, D1O~DmO is the output signal of steam pressure preset value calculation device D1~Dm respectively,
It is also the m input of signal processor DD2 simultaneously, the output of signal processor DD2 takes the maximum value of its all input, as most
Big steam pressure setting value inputs to the first control unit 2.
Optionally, as shown in Fig. 4, Fig. 6, the first control unit 2 can include:The first acquisition module 21 for being sequentially connected,
22 and first control module 23 of first processing module;
First acquisition module 21, for acquiring the first multi-energy data.
Optionally, the first multi-energy data can include:Steam pressure P, the steam pipe network total flow Ft of steam pipe network and remaining
Heat boiler steam flow Fchp.
In embodiments of the present invention, it is formed using steam pipe network pressure, steam pipe network total flow, waste heat boiler steam flow
Multivariable Feedforward-feedback control strategy, generating set power can effectively be overcome to adjust caused waste heat boiler steam stream
Amount changes the adverse effect to ductwork pressure, while also can effectively overcome steam pipe network load change to the unfavorable of ductwork pressure
It influences.And the top steam pressure setting value according to needed for all users by the use of steam is set as steam pipe network pressure
Value is realized and provides quality of steam on demand, can effectively reduce steam conveying thermal loss.
The distributed energy cogeneration of heat and power control system for reducing thermal loss is according to waste heat boiler steam flow, combustion gas
Steam flow of boiler, the load of regenerative apparatus vapor flow rate, periodically adjustment generating set, the electricity determining by heat control realized by this method
System not only meets the interoperability requirement of multiple-energy-source production, but also the adjustment frequency by reducing generating set, improves generator
The security and stability of group operation.
First processing module 22, for according to the first multi-energy data and top steam pressure preset value calculation steam boiler
Control the control component of component and regenerative apparatus.
Optionally, first processing module 22 can include:
Steam pipe network pressure controller A1, for the steam according to top steam pressure setting value and the steam pipe network of feedback
Pressure P calculates steam pipe network steam pressure feedback control component;
Steam pipe network total flow compensator A2, for calculating steam pipe network steam pressure according to steam pipe network total flow Ft
First feed-forward control component;
Waste heat boiler steam flow compensator A3, for calculating steam pipe network steam according to waste heat boiler steam flow Fchp
Second feed-forward control component of pressure;
First calculator C1, for according to steam pipe network steam pressure feedback control component, the vapour pressure of steam pipe network
First feed-forward control component of power, the second feed-forward control component of the steam pressure of steam pipe network and preset first algorithm into
The first controlled quentity controlled variable of row calculates;
First Staged cotrol device A4, for obtaining the control component of steam boiler according to the first controlled quentity controlled variable calculated;
Second Staged cotrol device A5, for obtaining the control component of regenerative apparatus according to the first controlled quentity controlled variable calculated.
In embodiments of the present invention, the measured value that steam pipe network pressure P is steam pipe network pressure controller A1 inputs, signal
The setting value that the output DD2O of processor DD2 is steam pipe net pressure controller A1 inputs, the control of steam pipe net pressure controller A1
Algorithm can include but is not limited to pid control algorithm (proportional integral differential control algorithm).Steam pipe network total flow Ft conducts
The input of steam pipe network total flow compensator A2, the control algolithm of steam pipe network total flow compensator A2 can include but is not limited to
PD control algorithm (proportional-plus-derivative control algolithm).Waste heat boiler steam flow Fchp is as waste heat boiler steam flow compensator
The input of A3, the control algolithm of waste heat boiler steam flow compensator A3 can include but is not limited to PD control algorithm.
In embodiments of the present invention, the output of steam pipe network pressure controller A1 can be denoted as A1O, steam pipe network total flow
The output of compensator A2 can be denoted as A2O, and the output of waste heat boiler steam flow compensator A3 can be denoted as A3O, respectively as
Input 1, input 2 and the input 3 of first calculator C1.
In embodiments of the present invention, which can be read group total, that is, calculate input 1, input 2 and input 3
With.And 1, input 2 will be inputted and input 3 and as the first calculator C1 output C1O, i.e. the first controlled quentity controlled variable is C1O.
In embodiments of the present invention, the output of the first calculator C1 is program-controlled with the first Staged cotrol device A4 and second point respectively
The input terminal of device A5 processed is connected.The output C1O of first calculator C1 is as the first Staged cotrol device A4 and the second Staged cotrol device
The input of A5.
In embodiments of the present invention, the first Staged cotrol device A4 can be obtained according to the first controlled quentity controlled variable C1O calculated and be steamed
The control component of boiler furnace Y3.Wherein, the control component (i.e. the output A4O of the first Staged cotrol device A4) of steam boiler Y 3
Inputting (C1O) with it can be in a linear relationship.For example, A4O=a*C1O+b;Wherein, a is linear coefficient, and b is constant.According to this
When linear relationship can so that C1O meets 50~100% situation of change so that A4O meets 0%*Fbe~100%*Fbe's
Variation range, the Fbe are the nominal steam flow of steam boiler Y 3.
In embodiments of the present invention, the output A4O of the first Staged cotrol device A4, which with it inputs (C1O) and includes but not limited to, is in
Linear relationship, can be according to its input/output relation of concrete application scene self-defining.
In embodiments of the present invention, the second Staged cotrol device A5 can be obtained according to the first controlled quentity controlled variable C1O calculated and be stored
The control component of thermal Y4.Wherein, the control component (i.e. the output A5O of the second Staged cotrol device A5) of regenerative apparatus Y4 with
It inputs (C1O) can be in a linear relationship.For example, A5O=c*C1O+d;Wherein, c is linear coefficient, and d is constant.According to the line
When sexual intercourse can so that C1O meets 0~50% situation of change so that A5O meets the variation of 100%*Fse~0%*Fse
Range, the Fse are the nominal steam flow of regenerative apparatus Y4.
In embodiments of the present invention, the output A5O of the second Staged cotrol device A5, which with it inputs (C1O) and includes but not limited to, is in
Linear relationship, can be according to its input/output relation of concrete application scene self-defining.
First control module 23, for respectively according to the control component of the control component of steam boiler and regenerative apparatus to steaming
Boiler furnace and regenerative apparatus are controlled.
Optionally, the first control module 23 can include:
First controller A6 is connected with the first Staged cotrol device A4, for the control component according to steam boiler Y3 and
The steam flow that the steam boiler that feedback obtains generates is implemented to control to steam boiler Y3;
Second controller A7 is connected with the second Staged cotrol device A5, for the control component according to regenerative apparatus Y4 and
The accumulation of heat steam flow for feeding back the regenerative apparatus obtained is implemented to control to regenerative apparatus Y4.
In embodiments of the present invention, the output A4O of the first Staged cotrol device A4 is the first controller A6 (i.e. boiler load controls
Device processed) given input, steam flow of boiler Fb be the first controller A6 measurement input, the first controller A6 may be used pre-
Imputation method, such as pid algorithm carry out operation, to obtain the control of steam boiler Y3 calculation to the given input A4O and measurement input Fb
Method.The output A6O of first controller A6 may be coupled on the gas control valve VFb of steam boiler Y3, pass through the control to VFb
Realize the control to steam boiler Y3.
In embodiments of the present invention, the output A5O of the second Staged cotrol device A5 is second controller A7 (i.e. regenerative apparatus controls
Device processed) given input, regenerative apparatus flow Fs be second controller A7 measurement input, second controller A7 may be used pre-
Imputation method, such as pid algorithm carry out operation, to obtain the control of regenerative apparatus Y4 calculation to the given input A5O and measurement input Fs
Method.The output A7O of second controller A7 may be coupled on the steam control valve VFs of regenerative apparatus Y4, pass through the control to VFs
Realize the control to regenerative apparatus Y4.
In embodiments of the present invention, above-mentioned preset algorithm includes but not limited to pid algorithm, can be according to concrete application field
Its control algolithm of scape self-defining.
Optionally, as shown in Figure 5, Figure 6, the second control unit 3 can include:31 He of the second acquisition module being connected with each other
Second processing module 32;
Second acquisition module 31, for acquiring the second multi-energy data of steaming plant;Steaming plant includes:Afterheat steam pot
Stove, steam boiler and regenerative apparatus;
Optionally, the second multi-energy data can include but is not limited to:Waste heat boiler steam flow Fchp, steam boiler generate
Steam flow Fb and regenerative apparatus accumulation of heat steam flow Fs.
It in embodiments of the present invention, in advance can be respectively in steam such as waste heat steam boiler, steam boiler and regenerative apparatus
Corresponding data acquisition device at equipment is set, is acquired with the multi-energy data to each steaming plant.For specifically adopting
Acquisition means and equipment are not limited, for example, can include flowmeter.
Second processing module 32, for the controlled quentity controlled variable according to the second multi-energy data of acquisition calculating generating set, and according to
The controlled quentity controlled variable of generating set controls generating set.
Optionally, Second processing module 32 can include:
Second calculator B1, for generated according to waste heat boiler steam flow Fchp, steam boiler Y3 steam flow Fb,
The accumulation of heat steam flow Fs of regenerative apparatus calculates the total steam flow of output.
Third calculator B2 carries out the second controlled quentity controlled variable for the total steam flow according to output and preset second algorithm
It calculates;
Signal selector S2, for according to the second controlled quentity controlled variable calculated, the feedback signal of signal selector S2 and open
The controlled quentity controlled variable of pass amount signal acquisition generating set Y1, and generating set is controlled according to the controlled quentity controlled variable of generating set.
In embodiments of the present invention, waste heat boiler steam flow Fchp, steam boiler steam flow Fb and regenerative apparatus
For the accumulation of heat steam flow Fs of Y4 respectively as the input 1, input 2 and input 3 of the second calculator B1, the second calculator B1 is defeated to this
Summation operation can be included by entering the algorithm of 1, input 2 and input 3, for example, the output B1O of the second calculator B1 can be:B1O=
Fchp+Fb-Fs。
In embodiments of the present invention, the output B1O of the second calculator B1 is the input of third calculator B2, third calculator
Output B2O and its of B2 inputs (i.e. the output B1O of the second calculator B1) can be linear.For example, B2O=e*C1O+f;Its
In, e is linear coefficient, and f is constant.B1O can be caused to meet 0%*Fchpe~100%*Fchpe's according to the linear relationship
During situation of change so that corresponding B2O meets the variation range of 0%*Pee~100%*Pee, and the wherein Fchpe is waste heat pot
Stove nominal steam flow, Pee are generating set power.
In embodiments of the present invention, the output B2O of third calculator B2 inputs (B1O) with it and includes but not limited to linearly
Relationship, can be according to its input/output relation of concrete application scene self-defining.
In embodiments of the present invention, the output Pesp difference of the output B2O and signal selector S2 of third calculator B2
It is the input 1 of signal selector S2 and input 2.Signal selector S2 can also include input 3, such as on-off model Stc;When pre-
If time tc (such as:Tc=600 seconds) then, the state of Stc is ON, and automatically reset into OFF at next moment, works as Stc
State when being ON, the input 1 of the output of signal selector S2 for signal selector S2, the otherwise output of signal selector S2 is
The input 2 of signal selector S2.Controlled quentity controlled variables of the output Pesp of S2 as generating set Y1.
In embodiments of the present invention, which can include but is not limited to above-mentioned switch control algolithm,
Its specific algorithm can not be limited, any can realize gets power generation according to different application scenarios self-definings
The algorithm of the controlled quentity controlled variable of unit Y1 is within the protection domain of the embodiment of the present invention.
In embodiments of the present invention, signal selector S2 can directly be connected with generating set, signal selector S2's
The load instruction that output Pesp is directly used in generating set acts on generating set, to realize the control to generating set.
The embodiment of the present invention additionally provides a kind of distributed energy cogeneration of heat and power control method for reducing thermal loss, the party
Method includes:
Top steam pressure setting value that all can be needed for source user is calculated, and acquires waste heat steam boiler and energy use
First multi-energy data of the steam pipe network at family, and the first multi-energy data and top steam pressure setting value are handled, to divide
Not Sheng Cheng steam boiler and regenerative apparatus control component, and according to the control component respectively to steam boiler and regenerative apparatus into
Row control;And
The second multi-energy data of steaming plant is acquired, and the second multi-energy data is handled, to generate generating set
Controlled quentity controlled variable, and generating set is controlled according to the controlled quentity controlled variable of generating set;
Wherein, steam pipe network is used to provide steam energy to energy source user;Steam boiler is used to generate steam by combustion gas
The energy;Generating set is used to generate electricity by combustion gas;Waste heat steam boiler is used to be generated according to the flue gas that generating set generates
Steam energy;Regenerative apparatus is used in the steam energy surplus that steam boiler and waste heat steam boiler generate to extra steam
The energy is stored.
The embodiment of the present invention additionally provides a kind of computer readable storage medium, is stored thereon with computer program, described
The distributed energy cogeneration of heat and power control method of above-mentioned reduction thermal loss is realized when computer program is executed by processor.
The embodiment of the present invention includes:User demand processing unit, for calculate all can be needed for source user maximum steam
Pressure set points, and as the input of the first control unit;First control unit, for acquiring waste heat steam boiler and the energy
First multi-energy data of the steam pipe network of user, and top steam pressure setting value is acquired, and to the first multi-energy data and maximum
Steam pressure setting value is handled, to generate the control component of steam boiler and regenerative apparatus respectively, and according to control component
Steam boiler and regenerative apparatus are controlled respectively;Second control unit, for acquiring the second multi-energy data of steaming plant,
And the second multi-energy data is handled, to generate the controlled quentity controlled variable of generating set, and according to the controlled quentity controlled variable of generating set to power generation
Unit is controlled;Wherein, steam pipe network is used to provide steam energy to energy source user;Steam boiler is used to generate by combustion gas
Steam energy;Generating set is used to generate electricity by combustion gas;Waste heat steam boiler is used for the flue gas generated according to generating set
Generate steam energy;Regenerative apparatus is used in the steam energy surplus that steam boiler and waste heat steam boiler generate to extra
Steam energy is stored.It by the embodiment scheme, realizes and coordinates each unit operation pattern according to load variations, realize
Quality of steam is provided on demand, can effectively reduce steam conveying thermal loss, the system of ensure that can adapt to different working condition requirements, pacify
Entirely, stablize, Effec-tive Function.
The embodiment of the present invention includes at least following advantage:
1st, the distributed energy cogeneration of heat and power multivariable control system uses Staged cotrol strategy to boiler load and storage
Thermal carries out closed-loop control, can effectively establish the thermodynamic equilibrium of system, meets the needs of thermic load, and can be by extra heat
It is collected by accumulation of energy, avoids the waste of the energy;
2nd, the Multivariable Feedforward formed using steam pipe network pressure, steam pipe network total flow, waste heat boiler steam flow-anti-
Control strategy is presented, generating set power can effectively be overcome to adjust caused waste heat boiler steam flow and changed to ductwork pressure
Adverse effect, while also can effectively overcome adverse effect of the steam pipe network load change to ductwork pressure;
3rd, the top steam pressure setting value according to needed for all users by the use of steam is set as steam pipe network pressure
Value is realized and provides quality of steam on demand, can effectively reduce steam conveying thermal loss;
4th, the distributed energy cogeneration of heat and power multivariable control system is steamed according to waste heat boiler steam flow, gas fired-boiler
Steam flow amount, the load of regenerative apparatus vapor flow rate, periodically adjustment generating set, the electricity determining by heat control realized by this method, no
The interoperability requirement of multiple-energy-source production, and the adjustment frequency by reducing generating set are only met, improves generating set fortune
Capable security and stability.
Although the embodiment disclosed by the embodiment of the present invention is as above, the content only for ease of understanding the present invention and
The embodiment of use, is not limited to the embodiment of the present invention.Technical staff in any fields of the embodiment of the present invention,
Under the premise of the spirit and scope disclosed by the embodiment of the present invention are not departed from, it can be appointed in the form and details of implementation
What modification and variation, but the scope of patent protection of the embodiment of the present invention, the model that must be still defined with appended claims
Subject to enclosing.
Claims (10)
1. a kind of distributed energy cogeneration of heat and power control system for reducing thermal loss, which is characterized in that the system comprises:With
Family demand processing unit, the first control unit and the second control unit;
The user demand processing unit, for calculate all can be needed for source user top steam pressure setting value, and conduct
The input of first control unit;
First control unit, for acquiring the first energy number of the steam pipe network of waste heat steam boiler and energy source user
According to, and acquire the top steam pressure setting value, to first multi-energy data and the top steam pressure setting value into
Row processing, to generate the control component of steam boiler and regenerative apparatus respectively, and according to the control component respectively to the steaming
Boiler furnace and the regenerative apparatus are controlled;
Second control unit for acquiring the second multi-energy data of steaming plant, and carries out second multi-energy data
Processing, to generate the controlled quentity controlled variable of generating set, and controls the generating set according to the controlled quentity controlled variable of the generating set;
Wherein, the steam pipe network is used to provide steam energy to the energy source user;The steam boiler is used to pass through combustion gas
Generate the steam energy;The generating set is used to generate electricity by combustion gas;The waste heat steam boiler is used for according to institute
The flue gas for stating generating set generation generates the steam energy;The regenerative apparatus is used in the steam boiler and the waste heat
Extra steam energy is stored during the steam energy surplus that steam boiler generates.
2. the distributed energy cogeneration of heat and power control system according to claim 1 for reducing thermal loss, which is characterized in that
The user demand processing unit includes:
Data acquisition module, for acquire respectively each it is described can the steam valve switch state signal of source user and required
Steam pressure setting value;
Steam pressure preset value calculation device is opened for the steam pressure setting value according to energy source user and the steam valve
Off status signal exports the current desired steam pressure setting value of each energy source user;
Signal processor, for from all described the maximum steaming can be selected in the current desired steam pressure setting value of source user
Steam pressure setting value, and input to first control unit.
3. the distributed energy cogeneration of heat and power control system according to claim 1 for reducing thermal loss, which is characterized in that
First control unit includes:The first acquisition module, first processing module and the first control module being sequentially connected;
First acquisition module, for acquiring first multi-energy data;
The first processing module, for according to first multi-energy data and the top steam pressure preset value calculation
The control component of steam boiler and the control component of the regenerative apparatus;
First control module, for respectively according to the control point of the control component of the steam boiler and the regenerative apparatus
Amount controls the steam boiler and the regenerative apparatus.
4. the distributed energy cogeneration of heat and power control system according to claim 3 for reducing thermal loss, which is characterized in that
First multi-energy data includes:The steam pressure of the steam pipe network, the steam pipe network total flow and the waste heat
Steam flow of boiler.
5. the distributed energy cogeneration of heat and power control system according to claim 4 for reducing thermal loss, which is characterized in that
The first processing module includes:
Steam pipe network pressure controller, for the steaming according to the top steam pressure setting value and the steam pipe network of feedback
Steam pressure calculates the steam pressure feedback control component of the steam pipe network;
Steam pipe network total flow compensator, for calculating the first feed-forward control component of the steam pressure of the steam pipe network;
Waste heat boiler steam flow compensator, for calculating the second feed-forward control component of the steam pressure of the steam pipe network;
First calculator, for steam pressure feedback control component, the steam of the steam pipe network according to the steam pipe network
First feed-forward control component of pressure, the second feed-forward control component of the steam pressure of the steam pipe network and preset first
Algorithm carries out the first controlled quentity controlled variable calculating;
First Staged cotrol device, for obtaining the control component of the steam boiler according to first controlled quentity controlled variable calculated;
Second Staged cotrol device, for obtaining the control component of the regenerative apparatus according to first controlled quentity controlled variable calculated.
6. the distributed energy cogeneration of heat and power control system according to claim 5 for reducing thermal loss, which is characterized in that
First control module includes:
First controller is connected with the first Staged cotrol device, for the control component according to the steam boiler and instead
The steam flow that the steam boiler that feedback obtains generates is implemented to control to the steam boiler;
Second controller is connected with the second Staged cotrol device, for the control component according to the regenerative apparatus and instead
The accumulation of heat steam flow for presenting the regenerative apparatus obtained is implemented to control to the regenerative apparatus.
7. the distributed energy cogeneration of heat and power control system according to claim 4 for reducing thermal loss, which is characterized in that
Second control unit includes:The second acquisition module and Second processing module being connected with each other;
Second acquisition module, for acquiring the second multi-energy data of the steaming plant;The steaming plant includes:It is described
Waste heat steam boiler, the steam boiler and the regenerative apparatus;
The Second processing module, for calculating the controlled quentity controlled variable of the generating set according to second multi-energy data of acquisition,
And the generating set is controlled according to the controlled quentity controlled variable of the generating set.
8. the distributed energy cogeneration of heat and power control system according to claim 7 for reducing thermal loss, which is characterized in that
Second multi-energy data includes:The steam flow and described that the waste heat boiler steam flow, the steam boiler generate
The accumulation of heat steam flow of regenerative apparatus.
9. the distributed energy cogeneration of heat and power control system according to claim 8 for reducing thermal loss, which is characterized in that
The Second processing module includes:
Second calculator, for steam flow, the storage according to the waste heat boiler steam flow, steam boiler generation
The accumulation of heat steam flow of thermal calculates the total steam flow of output;
Third calculator carries out the second control gauge for the total steam flow according to the output and preset second algorithm
It calculates;
Signal selector, for according to second controlled quentity controlled variable, the feedback signal of signal selector and the switching value calculated
The controlled quentity controlled variable of generating set described in signal acquisition, and the generating set is controlled according to the controlled quentity controlled variable of the generating set
System.
10. a kind of distributed energy cogeneration of heat and power control method for reducing thermal loss, which is characterized in that the method includes:
Top steam pressure setting value that all can be needed for source user is calculated, and acquires waste heat steam boiler and energy source user
First multi-energy data of steam pipe network handles first multi-energy data and the top steam pressure setting value, with
The control component of steam boiler and regenerative apparatus is generated respectively, and according to the control component respectively to the steam boiler and institute
Regenerative apparatus is stated to be controlled;And
The second multi-energy data of steaming plant is acquired, and second multi-energy data is handled, to generate generating set
Controlled quentity controlled variable, and the generating set is controlled according to the controlled quentity controlled variable of the generating set;
Wherein, the steam pipe network is used to provide steam energy to the energy source user;The steam boiler is used to pass through combustion gas
Generate the steam energy;The generating set is used to generate electricity by combustion gas;The waste heat steam boiler is used for according to institute
The flue gas for stating generating set generation generates the steam energy;The regenerative apparatus is used in the steam boiler and the waste heat
Extra steam energy is stored during the steam energy surplus that steam boiler generates.
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