CN107121941A - Miniature gas turbine and the emulation mode and device of the stable heating of heat supply network cooperation - Google Patents
Miniature gas turbine and the emulation mode and device of the stable heating of heat supply network cooperation Download PDFInfo
- Publication number
- CN107121941A CN107121941A CN201710501404.2A CN201710501404A CN107121941A CN 107121941 A CN107121941 A CN 107121941A CN 201710501404 A CN201710501404 A CN 201710501404A CN 107121941 A CN107121941 A CN 107121941A
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- China
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- heat supply
- water
- gas turbine
- supply network
- miniature gas
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B17/00—Systems involving the use of models or simulators of said systems
- G05B17/02—Systems involving the use of models or simulators of said systems electric
Abstract
The invention discloses miniature gas turbine and the emulation mode and device of the stable heating of heat supply network cooperation, this method is by the way that control machine and analog machine are connected with Ethernet respectively, the running of the grid parts constituted using the industrial computer in analog machine to heat supply network part and by miniature gas turbine is simulated, and draws the artificial variable of dry run；Control machine draws the water-carrying capacity change curve of correspondence input heat supply network according to the change of given miniature gas turbine load, and then obtain water circulating pump changed power curve corresponding with water-carrying capacity change curve, the change of the water-carrying capacity of control input heat supply network is controlled by water circulating pump changed power curve, make water temperature constant, so as to realize the simulator used in the emulation mode of the stable heating of stable heating miniature gas turbine and heat supply network cooperation, including the control machine being connected with Ethernet, the analog machine being connected with Ethernet.The present invention can increase the stability that miniature gas turbine heats with heat supply network combined operation system, save the energy.
Description
Technical field
The present invention relates to imitating that energy internet arena, particularly miniature gas turbine and heat supply network cooperation stabilization heat
True method and device.
Background technology
Miniature gas turbine is a kind of energy exchange equipment, and with long lifespan, reliability is high, it is clever to pollute small and control mode
Living the features such as.Natural gas, electric energy and heat energy equal energy source form are included in generation system of micro turbine, conversion efficiency is higher,
It is to provide the best mode of the multi-energy systems such as cleaning, reliable, high-quality, multipurpose, small distributed generating and cogeneration.
Miniature gas turbine will play the part of extremely important role in national economy fields such as following China's electric power, power.China is to miniature
Gas turbine has done substantial amounts of research work, but still has huge gap compared with external, and imperfection is gone back in some researchs, wherein
The high-temperature flue gas utilization rate of miniature gas turbine turbine output is relatively low, is used for also more extensive, miniature gas turbine makes
The high-temperature flue gas utilization rate that there is turbine output during is relatively low, the problem of loss of heat is larger, when utilizing miniature gas
When the high-temperature flue gas of turbine turbine output carries out heat exchange heating with water, because gas turbine load changes, it can cause to supply
Thermally labile, influences heating effect.Therefore, exist when being heated using miniature gas turbine temperature control effect it is poor, heating
The relatively low shortcoming of stability.
The content of the invention
It is an object of the present invention to provide miniature gas turbine and the emulation mode and dress of the stable heating of heat supply network cooperation
Put.The present invention can increase stability and the saving energy that miniature gas turbine heats with heat supply network combined operation system.
Technical scheme：Miniature gas turbine and the emulation mode of the stable heating of heat supply network cooperation, this method
It is by the way that control machine and analog machine are connected with Ethernet respectively, using the industrial computer in analog machine to heat supply network part and by miniature
The running of grid parts that gas turbine is constituted is simulated, and draws the artificial variable of dry run, and control machine is according to giving
The change for determining miniature gas turbine load draws the water-carrying capacity change curve of correspondence input heat supply network, and then obtains changing with water-carrying capacity
Curve correspondence water circulating pump changed power curve, grid side power output, control are controlled by water circulating pump changed power curve
Pump power changes, and then the change of the water-carrying capacity of control input heat supply network, makes water temperature constant, so as to realize stable heating.
In the emulation mode that foregoing miniature gas turbine heats with heat supply network cooperation stabilization, the control machine is under
FormulaDraw water corresponding with miniature gas turbine load variations
In flow changing curve, the formulaFor heat supply Water in Water Tanks temperature variable quantity, mqcq(Tin-Tout) discharged for high-temperature flue gas
Heat, cms(T-Th) it is the heat that heating system is distributed, AU (T-Tw) it is the heat that heat supply water tank is distributed in atmosphere.
In the emulation mode that foregoing miniature gas turbine heats with heat supply network cooperation stabilization, the heat supply network part, bag
Include and water storage barrel, temperature-sensing valve, flow are provided with the heat supply water tank being connected by coil pipe with miniature gas turbine turbine, heat supply water tank
Meter, frequency-variable controller and water circulating pump, heat supply water tank are connected with warmer.
In the emulation mode that foregoing miniature gas turbine heats with heat supply network cooperation stabilization, the grid parts, bag
The TRT being connected with the rotor of miniature gas turbine is included, water circulating pump is connected through frequency-variable controller with TRT.
Foregoing miniature gas turbine and the simulator used in the emulation mode of the stable heating of heat supply network cooperation, including
The control machine being connected with Ethernet, the analog machine being connected with Ethernet.
In foregoing simulator, described analog machine includes interchanger, and interchanger is connected to industrial computer A and industry control
Machine B, industrial computer A uses big step-length simulated grid department pattern, and industrial computer B is made up of using the emulation of small step-length miniature gas turbine
Grid parts.
Compared with prior art, it is of the invention by building miniature gas turbine and heat supply network associative simulation device, by using
Two stylobates are in the industrial computer of xPCtarget technologies, and simulation heat supply network part is run with grid parts, and passes through Ethernet and interchanger
The information run in industrial computer A and industrial computer B is exchanged, real-time simulation is realized, the miniature gas turbine of simulation system operation is drawn
Load, export the emulation changes such as water-carrying capacity and required electrical power that temperature and the flow and water circulating pump of high-temperature flue gas export
Amount；Water temperature change is calculated by simulating the artificial variable drawn, and then verifies miniature gas turbine and heat supply network cooperation
The temperature of system heating is constant, improves the stability of heating；By the operating VFC of simulation system, the recirculated water drawn
The water-carrying capacity and required electrical power of pump output, it is possible to decrease water circulating pump power consumption, with the effect for saving the energy.
The high-temperature flue gas of miniature gas turbine output carries out heat exchange by the water in coil pipe and heat supply water tank, and following formula is confession
The mathematical modeling of boiler thermal change：
In formula：The quality of M- heat supply Water in Water Tanks, units/kg；The specific heat of c- water, unit J/kgK；T- Water in Water Tanks
Temperature, unit K；mqThe high-temperature flue gas flow of-turbine output, units/kg/s；cqThe specific heat of-high-temperature flue gas, unit J/kgK；
Tin、ToutThe input of-high-temperature flue gas and output temperature, unit K；ms- flow to heat supply network water flow, units/kg/s；Th- backwater
Temperature, unit K；The surface area of A- water tanks, unit m2；The heat transfer coefficient of U- water tanks and air, unit W/m2·K；Tw- outdoor temp
Degree, unit K；For heat supply Water in Water Tanks temperature variable quantity, mqcq(Tin-Tout) it is the heat that high-temperature flue gas discharges, cms(T-
Th) it is the heat that heating system is distributed, AU (T-Tw) it is the heat that heat supply water tank is distributed in atmosphere.
By giving the load variations of miniature gas turbine, it can be emulated in industrial computer and draw independent variable high-temperature flue gas
The temperature T of input and outputinAnd ToutAnd the flow m of high-temperature flue gasq；To heat supply Water in Water Tanks temperature variable quantity in fixed patternFor 0；To the water temperature T in fixed pattern in heat supply water tank, return water temperature ThAnd outdoor temperature Tw, make in formulamqcq
(Tin-Tout) and AU (T-Tw) it is known quantity, control machine can obtain cm in formula according to above-mentioned known quantitys(T-Th) in it is unknown
Measure ms, that is, flow to the flow of the water of heat supply network；The flow m of the water of heat supply network is flowed to according to gainedsDependent variable water circulating pump can be calculated
The electrical power of input is needed, and water circulating pump changed power curve is drawn out according to the data obtained；Therefore miniature gas turbine is worked as
When being changed to fixed load, because flue-gas temperature is fallen with flow, to keep the stabilization of water temperature in heat supply water tank, heat supply
The flow velocity of Water in Water Tanks should just be reduced, and the flow of water circulating pump output is reduced therewith with power.
As shown in figure 3, by given miniature gas turbine load, and give in 1.5h miniature gas turbine load from
65KW drops to 40KW；As shown in Figure 4 and Figure 5, because miniature gas turbine load falls, so the fuel quantity needed
It will fall, so the temperature of the high-temperature flue gas of turbine output drops to 790 DEG C, the flue gas flow of turbine output from 860 DEG C
0.155kg/s is dropped to from 0.15555kg/s；As shown in Figure 6 and Figure 7, because flue-gas temperature is fallen with flow, to keep
Water temperature stability in heat supply water tank, so heat supply water tank output water-carrying capacity should just be decreased to 1kg/s, and because current from 2kg/s
Amount reduces, so electrical power needed for water circulating pump can then be reduced to 0.02KW from 0.3~0.4KW, saves water circulating pump consumption
Electric energy.Given miniature gas turbine load falls in 1.5h, as shown in figure 8, not applying VFC, water to water circulating pump
Temperature will be gradually decrease to 45 DEG C from 60 DEG C；As shown in figure 9, applying VFC to water circulating pump, water temperature keeps giving 60 DEG C of perseverances
It is fixed；By being contrasted to Fig. 8 and Fig. 9, it can be seen that after electrical power needed for applying VFC reduction water circulating pump, miniature
When gas turbine load falls, the change of water-carrying capacity is controlled by water circulating pump changed power curve, water temperature can be kept
It is constant, so applying VFC advantageously ensures that the constant of system temperature, so as to increase the stability of heating.The present invention is used
Electrical power needed for VFC regulation water circulating pump, the water-carrying capacity change that benefit just can be by inputting heat supply network is dynamically controlled
Water circulating pump processed, can effectively save the electric energy needed for water circulating pump.
In summary, the present invention can increase the stability that miniature gas turbine heats with heat supply network combined operation system, save
The energy.
Brief description of the drawings
Fig. 1 is the structural representation of simulator；
Fig. 2 is the schematic diagram for the system that grid parts are run with heat supply network part combination；
Fig. 3 is oscillogram of the miniature gas turbine to fixed load；
Fig. 4 is the oscillogram of the temperature of miniature gas turbine output high-temperature flue gas；
Fig. 5 is the oscillogram of the flow of miniature gas turbine output high-temperature flue gas；
Fig. 6 be to maintain water tank temperature it is constant when, water circulating pump need export water-carrying capacity oscillogram；
Fig. 7 be to maintain water tank temperature it is constant when, water circulating pump needs power waveform figure；
Fig. 8 is the oscillogram for applying water temperature change before control；
Fig. 9 is to apply the oscillogram that water temperature changes after control.
Mark in accompanying drawing for：1- Ethernets, 2- control machines, 3- analog machines, 4- interchangers, 5- industrial computer As, 6- industrial computers
B, 7- coil pipe, 8- water storage barrels, 9- flowmeters, 10- frequency-variable controllers, 11- water circulating pumps, 12- warmers.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment.Miniature gas turbine and the emulation mode of the stable heating of heat supply network cooperation, as depicted in figs. 1 and 2, should
Method be by the way that control machine and analog machine are connected with Ethernet respectively, using the industrial computer in analog machine to heat supply network part and by
The running for the grid parts that miniature gas turbine is constituted is simulated, and draws the artificial variable of dry run, control machine root
The water-carrying capacity change curve of correspondence input heat supply network is drawn according to given miniature gas turbine load variations, and then is obtained and water-carrying capacity
Change curve correspondence water circulating pump changed power curve, grid side power output is controlled by water circulating pump changed power curve,
And then the water-carrying capacity change of control input heat supply network, make water temperature constant, so as to realize stable heating.
The control machine passes through following formulaDraw with it is miniature
In the corresponding water-carrying capacity change curve of gas turbine load variations, the formulaFor heat supply Water in Water Tanks temperature variable quantity, mqcq
(Tin-Tout) it is the heat that high-temperature flue gas discharges, cms(T-Th) it is the heat that heating system is distributed, AU (T-Tw) it is heat supply water tank
The heat distributed in atmosphere；The heat supply network part, including the supplying hot water being connected by coil pipe 7 with miniature gas turbine turbine
Water storage barrel 8, temperature-sensing valve, flowmeter 9, frequency-variable controller 10 and water circulating pump 11 are provided with case, heat supply water tank, heat supply water tank is with taking
Warmer 12 is connected；The grid parts, including the TRT being connected with the rotor of miniature gas turbine, water circulating pump 11 is through becoming
Frequency controller 10 is connected with TRT；Described miniature gas turbine and the emulation mode institute of the stable heating of heat supply network cooperation
Simulator, including the control machine 2 being connected with Ethernet 1, the analog machine 3 being connected with Ethernet 1；Described analog machine 3
Including interchanger 4, interchanger 4 is connected to industrial computer A 5 and industrial computer B 6, and industrial computer A uses big step-length simulated grid part
Model, industrial computer B emulates the grid parts being made up of miniature gas turbine using small step-length.
Operation principle：Miniature gas turbine and heat supply network associative simulation device are built by MATLAB/Simulink, two are used
Industrial computer based on xPCtarget technologies passes through following formula
System operation is emulated, the given miniature gas turbine load of input, which changes, show that miniature gas turbine exports high temperature cigarette
The temperature of gas and the change of flow, give heat supply Water in Water Tanks temperature variable quantityFor 0；Water temperature T in given heat supply water tank,
Return water temperature ThAnd outdoor temperature Tw, make in formulamqcq(Tin-Tout) and AU (T-Tw) it is known quantity, control machine
Cm in formula can be obtained according to above-mentioned known quantitys(T-Th) in unknown quantity msFlow to the flow of the water of heat supply network；Flowed according to gained
To the flow m of the water of heat supply networksShow that dependent variable water circulating pump needs the electrical power inputted, and circulation is drawn out according to the data obtained
Pump power change curve；Simulate following running in simulator, miniature gas turbine include compressor, combustion chamber,
The parts such as turbine, rotor and revolution speed control system, extraneous air is compacted into high temperature and high pressure gas by compressor, to connect
Continuous constantly to provide gases at high pressure for combustion chamber, fuel is inputted by petrolift, speed proportional valve and fuel control valve to burn
Room, the gases at high pressure mixed combustion then provided in combustion chamber with compressor discharges chemical energy, and driving turbine rotation is done
Work, portion of energy is changed into electric power output by TRT, is partly dissipated by high-temperature flue gas with form of thermal energy；By setting
Turbine is connected by coil pipe 7 with heat supply water tank, and the high-temperature flue gas of output carries out heat exchange by the water in coil pipe 7 and heat supply water tank,
Raise water temperature, by setting temperature-sensing valve in heat supply water tank exit, temperature-sensing valve can draw the current of output according to given temperature
Amount, then the electrical power for controlling frequency-variable controller 10 to adjust water circulating pump 11, so as to adjust the flow for the water for flowing to heat supply network, it is ensured that water
The stabilization of the temperature inside the box；It is user's heating to flow to the water of heat supply network to enter warmer 12 by flowmeter 9 and heat supply pipeline；From user
The water that warmer 12 flows out is recycled back into heat supply water tank through water return pipeline.
Claims (6)
1. miniature gas turbine and the emulation mode of the stable heating of heat supply network cooperation, it is characterised in that：This method is by inciting somebody to action
Control machine and analog machine are connected with Ethernet respectively, using the industrial computer in analog machine to heat supply network part and by miniature gas turbine
The running of the grid parts of composition is simulated, and draws the artificial variable of dry run；Control machine is according to given miniature combustion
The change of gas-turbine load draws the water-carrying capacity change curve of correspondence input heat supply network, and then obtains corresponding with water-carrying capacity change curve
Water circulating pump changed power curve, grid side power output is controlled by water circulating pump changed power curve, controls pump power
Change, and then the change of the water-carrying capacity of control input heat supply network, make water temperature constant, so as to realize stable heating.
2. miniature gas turbine according to claim 1 and the emulation mode of the stable heating of heat supply network cooperation, its feature
It is：The control machine passes through following formulaDraw and miniature combustion
In the corresponding water-carrying capacity change curve of gas-turbine load variations, the formulaFor heat supply Water in Water Tanks temperature variable quantity, mqcq
(Tin-Tout) it is the heat that high-temperature flue gas discharges, cms(T-Th) it is the heat that heating system is distributed, AU (T-Tw) it is heat supply water tank
The heat distributed in atmosphere.
3. miniature gas turbine according to claim 1 and the emulation mode of the stable heating of heat supply network cooperation, its feature
It is：In the heat supply network part, including the heat supply water tank being connected by coil pipe (7) with miniature gas turbine turbine, heat supply water tank
Provided with water storage barrel (8), temperature-sensing valve, flowmeter (9), frequency-variable controller (10) and water circulating pump (11), heat supply water tank and warmer
(12) connect.
4. miniature gas turbine according to claim 1 and the emulation mode of the stable heating of heat supply network cooperation, its feature
It is：The grid parts, including the TRT being connected with the rotor of miniature gas turbine, water circulating pump (11) is through frequency conversion control
Device (10) processed is connected with TRT.
5. heated according to the miniature gas turbine described in Claims 1-4 any claim and heat supply network cooperation stabilization
Simulator used in emulation mode, it is characterised in that：Including the control machine (2) being connected with Ethernet (1), with Ethernet (1)
The analog machine (3) of connection.
6. simulator according to claim 5, it is characterised in that：Described analog machine (3) includes interchanger (4), hands over
Change planes (4) be connected to industrial computer A (5) and industrial computer B (6), industrial computer A emulates heat supply network department pattern, work using big step-length
Control machine B emulates the grid parts being made up of miniature gas turbine using small step-length.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710501404.2A CN107121941B (en) | 2017-06-27 | 2017-06-27 | Simulation method and device for stable heating of combined operation of micro gas turbine and heat supply network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710501404.2A CN107121941B (en) | 2017-06-27 | 2017-06-27 | Simulation method and device for stable heating of combined operation of micro gas turbine and heat supply network |
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| CN107121941A true CN107121941A (en) | 2017-09-01 |
| CN107121941B CN107121941B (en) | 2021-04-06 |
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2017
- 2017-06-27 CN CN201710501404.2A patent/CN107121941B/en active Active
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| CN1558363A (en) * | 2004-01-15 | 2004-12-29 | 上海理工大学 | Simulation experiment method and device for energy source island |
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| EP2973118A4 (en) * | 2013-03-15 | 2016-11-09 | United Technologies Corp | Compact aero-thermo model real time linearization based state estimator |
| DE102015208739A1 (en) * | 2015-05-12 | 2016-11-17 | Robert Bosch Gmbh | Device for operating a heating system and / or an air conditioning system and / or a device system and method for operating such a device |
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| CN107121941B (en) | 2021-04-06 |
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