CN109026237B - A kind of organic working medium power cycle generating system coordinated control system and method - Google Patents
A kind of organic working medium power cycle generating system coordinated control system and method Download PDFInfo
- Publication number
- CN109026237B CN109026237B CN201811003367.3A CN201811003367A CN109026237B CN 109026237 B CN109026237 B CN 109026237B CN 201811003367 A CN201811003367 A CN 201811003367A CN 109026237 B CN109026237 B CN 109026237B
- Authority
- CN
- China
- Prior art keywords
- working medium
- temperature
- increases
- turbine
- evaporator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/02—Arrangement of sensing elements
- F01D17/06—Arrangement of sensing elements responsive to speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/02—Arrangement of sensing elements
- F01D17/08—Arrangement of sensing elements responsive to condition of working-fluid, e.g. pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/02—Arrangement of sensing elements
- F01D17/08—Arrangement of sensing elements responsive to condition of working-fluid, e.g. pressure
- F01D17/085—Arrangement of sensing elements responsive to condition of working-fluid, e.g. pressure to temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of organic working medium power cycle generating system coordinated control system and methods, working medium pump including being in turn connected to form working medium side circulation path, evaporator, turbine and condenser, regulating valve is provided between evaporator and turbine, pressure measurement transmitter and temperature measuring transducer are provided between evaporator and regulating valve, the coaxially connected generator of turbine, tachometric survey transmitter is provided between turbine and generator, condenser is connect with coolant intake pipe road, evaporator is connect by pipeline with organic working medium power cycle generating system, working medium pump, pressure measurement transmitter, temperature measuring transducer, regulating valve and tachometric survey transmitter are connected in parallel composition coordinated control system with controller.The present invention provides technical guarantee for the safety in running, stability, high efficiency, is conducive to promote organic working medium power cycle generating system in the application of low-grade heat source recycling field, improves efficiency of energy utilization.
Description
Technical field
The invention belongs to low-grade heat source, industrial afterheat recoveries to utilize, generate electricity coordinated control and power engineering technology field,
More particularly to a kind of organic working medium power cycle generating system coordinated control system and method.
Background technique
With fast development economic in global range, energy-output ratio is growing day by day, low-grade heat source as solar energy,
A large amount of low temperature exhaust heats that thermal energy and industrial activity generate are big, at high cost without by effective abundant land productivity due to recovery difficult
With mass energy is directly wasted.Low-grade heat source can be efficiently converted to electric energy by organic working medium power cycle generating system,
It is significant to reduction energy consumption and Promote Sustainable Social Development.
In organic working medium power cycle generating system research field, the prior art is mainly heating power, economy etc.
Design optimizing.For safe and stable, the economical operation for guaranteeing organic working medium power cycle generating system, need to be equipped with control
System processed controls electricity generation system, and control method for coordinating is necessary to design control system, but domestic at present
The control method for coordinating for being showed no perfect organic working medium power cycle generating system outside discloses.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of organic working medium
Power cycle generating system coordinated control system and method, it is intended to be the reality of organic working medium power cycle generating system control system
Border construction provides theoretical direction, provides technical guarantee for the safety in running, stability, high efficiency.
The invention adopts the following technical scheme:
A kind of organic working medium power cycle generating system coordinated control system, including be in turn connected to form working medium side circulation and lead to
Working medium pump, evaporator, turbine and the condenser on road, are provided with regulating valve between evaporator and turbine, evaporator and regulating valve it
Between be provided with pressure measurement transmitter and temperature measuring transducer, turbine coaxially connected generator is set between turbine and generator
It is equipped with tachometric survey transmitter, condenser is connect with coolant intake pipe road, and evaporator is followed by pipeline and organic working medium power
The connection of ring electricity generation system, working medium pump, pressure measurement transmitter, temperature measuring transducer, regulating valve and tachometric survey transmitter are equal
Composition coordinated control system is connected in parallel with controller.
Specifically, organic working medium power cycle generating system peace heat source include flow or temperature be adjusted heat source and flow,
Temperature is in fluctuating heat source, and it includes heat source pump that heat source, which is adjusted, in flow or temperature, and heat source pump is connect with controller, and heat source pump passes through
GEOTHERMAL WATER input channel is connected with evaporator, transfers heat to after working medium side recharge to underground；Flow, temperature are in fluctuation heat
Source includes industrial exhaust heat input channel, and industrial exhaust heat input channel connection evaporator transfers heat to working medium side.
A kind of control method for coordinating of organic working medium power cycle generating system coordinated control system, for using flow or
The operation of the organic working medium power cycle generating system of heat source in a stand-alone mode is adjusted in temperature, measures pick-up according to temperature
Device, pressure measurement transmitter and tachometric survey transmitter carry out turbine speed adjusting respectively；Wave is in for using flow, temperature
Operation of the organic working medium power cycle generating system of dynamic heat source under grid-connect mode, is surveyed according to temperature measuring transducer and pressure
Transmitter carries out turbine initial steam pressure adjusting respectively.
Specifically, the organic working medium power cycle generating system of heat source is adjusted in single machine mould for using flow or temperature
Operation under formula, turbine speed adjust method specifically:
When extraneous electric load increases, turbine active torque is less than the electromagnetic resistance square of generator, and turbine speed decline is low
In rated speed, the tach signal measured is transferred to controller by tachometric survey transmitter, and controller is exported according to revolving speed deviation
Control instruction increases control valve opening, and turbine inlet flow rate increases, and turbine active torque is gradually increased, turbine speed decrease speed
Slow down, turbine speed is gradually increasing；
Since control valve opening increase causes pipe resistance characteristic to reduce, working medium pump rate of discharge increases, outlet pressure subtracts
It is small that outlet vapor pressure while flow increases in evaporator is caused to reduce, it is lower than rated pressure, pressure measurement transmitter will be surveyed
The pressure signal obtained is transferred to controller, and controller exports control instruction according to pressure divergence and increases working medium revolution speed, working medium pump
Outlet pressure increases, and evaporator outlet steam pressure rises；Evaporator outlet vapor (steam) temperature reduces, and is lower than rated temperature；
The temperature signal measured is transmitted to controller by temperature measuring transducer, and controller is exported according to temperature deviation and controlled
Instruction increases heat source revolution speed, and heat source flow increases, and the heat exchange amount of evaporator increases, and evaporator outlet vapor (steam) temperature rises；
Final system working medium flow is stablized in the larger value, and turbine speed, evaporator outlet steam pressure and temperature are all kept
Rated value.
Specifically, the organic working medium power cycle generating system of heat source is adjusted in single machine mould for using flow or temperature
Operation under formula, turbine speed adjust method specifically:
When extraneous electric load increases, turbine active torque is less than the electromagnetic resistance square of generator, and turbine speed decline is low
In rated speed, the tach signal measured is transferred to controller by tachometric survey transmitter, and controller is exported according to revolving speed deviation
Control instruction increases heat source revolution speed, and heat source flow increases, and the heat exchange amount of evaporator increases, and evaporator outlet vapor (steam) temperature increases
Greatly, it is higher than rated temperature；
The temperature signal measured is transmitted to controller by temperature measuring transducer, and controller exports control instruction and increases working medium
Revolution speed, in the case where resistance of pipe system characteristic is constant, working medium pump rate of discharge and pressure increase, evaporator outlet vapor (steam) temperature
Decline；Evaporator outlet steam pressure rises, and is higher than rated pressure；
The pressure signal measured is transferred to controller by pressure measurement transmitter, and controller exports control instruction and increases valve
Aperture, resistance of pipe system characteristic reduce, and working medium pump discharge pressure reduces, and flow increases, and evaporator outlet steam pressure reduces, evaporation
Device outlet vapor flow increases, and turbine inlet flow rate increases, and turbine active torque increases, and turbine speed decrease speed slows down, thoroughly
Flat turn speed is gradually increasing；
Final system working medium flow is stablized in the larger value, and turbine speed, evaporator outlet steam pressure and temperature are all kept
Rated value.
Specifically, the organic working medium power cycle generating system of heat source is adjusted in single machine mould for using flow or temperature
Operation under formula, turbine speed adjust method specifically:
When extraneous electric load increases, turbine active torque is less than the electromagnetic resistance square of generator, and turbine speed decline is low
In rated speed, the tach signal measured is transferred to controller by tachometric survey transmitter, and controller is exported according to revolving speed deviation
Control instruction increases working medium revolution speed, and in the case where resistance of pipe system characteristic is constant, working medium pump discharge pressure and flow increase, thoroughly
Flat inlet flow rate increases, and turbine active torque increases, and turbine speed decrease speed slows down then turbine speed and is gradually increasing；
The increase of working medium revolution speed leads to that working medium flow in evaporator increases and heat that heat source is input to system is constant, causes
Evaporator outlet vapor (steam) temperature reduces, and is lower than rated temperature.The temperature signal measured is transmitted to control by temperature measuring transducer
Device, controller export control instruction according to temperature deviation and increase heat source revolution speed, and heat source flow increases, and the heat exchange amount of evaporator increases
Add, evaporator outlet vapor (steam) temperature rises；Simultaneously because working medium revolution speed increases, working medium pump discharge pressure increases, and causes to evaporate
Device outlet vapor pressure rises, and is higher than rated pressure；
The pressure signal measured is transferred to controller by pressure measurement transmitter, and controller is exported according to pressure divergence and controlled
Instruction increases valve opening, and resistance of pipe system characteristic reduces, and working medium pump discharge pressure reduces, and evaporator exit pressure reduces；
Final system working medium flow is stablized in the larger value, and turbine speed, evaporator outlet steam pressure and temperature are all kept
Rated value.
Further, it is assisted when extraneous electric load is reduced, the control method of coordinated control system increases with extraneous electric load
Adjust the control method of control system opposite.
Specifically, being in the organic working medium power cycle generating system of fluctuating heat source grid-connected for using flow, temperature
Operation under mode, turbine initial steam pressure are adjusted specifically:
When industrial exhaust heat flow or temperature increase, input system heat increases, and evaporator heat exchange amount increases, evaporator
Outlet steam temperature increases, and is higher than rated temperature；
The temperature signal measured is transmitted to controller by temperature measuring transducer, and controller is exported according to temperature deviation and controlled
Instruction increases working medium revolution speed, and in the case that resistance of pipe system characteristic is constant, working medium pump rate of discharge increases, working medium stream in evaporator
Amount increases, and evaporator outlet vapor (steam) temperature reduces；Working medium pump discharge pressure increase simultaneously causes evaporator outlet steam pressure to increase
Greatly, it is higher than rated pressure；
The pressure signal measured is transferred to controller by pressure measurement transmitter, and controller increases according to output control instruction
Valve opening, resistance of pipe system characteristic reduce, and working medium pump discharge pressure reduces, and evaporator outlet steam pressure reduces；
Final system working medium flow is stablized in the larger value, and evaporator outlet steam pressure and temperature are held at rated value.
Further, when industrial exhaust heat flow or temperature reduce the operation of control system and industrial exhaust heat flow or
The operation of control system is opposite when temperature increases.
Compared with prior art, the present invention at least has the advantages that
A kind of organic working medium power cycle generating system coordinated control system of the present invention, by working medium pump, evaporator, turbine and
Condenser is in turn connected to form working medium side circulation path, and sensing element and controller parallel connection composition coordinated control system is arranged
The real-time monitoring to system controlled volume may be implemented in system, setting sensing element, once controlled volume actual measured value and controlled volume
Rated value deviates, and can be adjusted in real time by controller to respective element in system, guarantees that organic working medium power follows
Controlled volume control rapidly and accurately near rated value and can be reached stable by ring electricity generation system, to guarantee system operation
High efficiency, while preventing a wide range of offrating of controlled volume and causing generating system equipment malfunction or damage, thus guarantee be
The safety of system operation.
The present invention proposes a kind of organic working medium power cycle generating system control method for coordinating, adjusts method by turbine speed
It can control and the operation of the organic working medium power cycle generating system of heat source in a stand-alone mode is adjusted using flow or temperature,
By guaranteeing that turbine speed stablizes the stabilization to guarantee electricity generation system generation frequency；Adjusting method by turbine initial steam pressure can control
System is in operation of the organic working medium power cycle generating system of fluctuating heat source under grid-connect mode using flow, temperature, to protect
Electricity generation system Waste Heat Reuse is demonstrate,proved to maximize.Utilize organic working medium power cycle generating system proposed by the present invention coordinated control side
Method, system can utilize low-grade heat source with high efficiente callback, improve efficiency of energy utilization, mitigate the dependence to fossil energy, for
It reduces energy consumption and alleviates atmosphere pollution and be of great significance, be conducive to social sustainable development.
Further, the characteristics of the first turbine speed adjusting method is when external load changes, can to make full use of evaporation
The heat storage capacity of device makes system reach stable state more quickly, can adapt to power grid external load quickly and require simultaneously
Guarantee the stabilization of turbine power generation frequency.
Further, second turbine speed, which adjusts the characteristics of method, is, when external load changes, can Steam Pressure Fluctuation very
System is set to reach stable state in the case where small to guarantee the stabilization of turbine power generation frequency.
Further, the third turbine speed adjust method the characteristics of be, external load change when, can Steam Pressure Fluctuation not
Make system relatively quickly reach stable state to guarantee the stabilization of turbine power generation frequency in the case where big, avoids pressure oscillation
Big and too long regulating time situation generates.
Further, turbine initial steam pressure, which adjusts the characteristics of method, is, can be in vapour pressure wave when waste heat flow or temperature change
Make system rapidly reach stable state in the case where dynamic very little, organic working medium cycle power generation system is allow to guarantee turbine
Initial steam pressure maximumlly utilizes the heat of waste heat source in the case where stablizing.
In conclusion the method for the present invention is it is intended that the practical construction of organic working medium power cycle generating system control system mentions
For theoretical direction, technical guarantee is provided for the safety in running, stability, high efficiency, is conducive to promote organic
Working medium power cycle generating system improves efficiency of energy utilization in the application of low-grade heat source recycling field, saves for China
Energy emission reduction cause is contributed.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the organic working medium power cycle generating system schematic diagram using GEOTHERMAL WATER；
Fig. 2 is the organic working medium power cycle generating system schematic diagram using industrial exhaust heat.
Wherein: 1. working medium pumps；2. heat source pumps；3. GEOTHERMAL WATER input channel；4. evaporator；5. pressure measurement transmitter；6.
Temperature measuring transducer；7. regulating valve；8. controller；9. turbine；10. tachometric survey transmitter；11. generator；12. condensation
Device；13. coolant intake pipe road；14. industrial exhaust heat input channel.
Specific embodiment
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The a large amount of low temperature exhaust heats generated in industrial activity are simply discarded or are recycled with very low efficiency, in addition to this certainly
The low-grade heat sources such as solar energy and geothermal energy present in right boundary are not recovered efficiently utilization yet, cause serious energy wave
Take.Organic working medium power cycle generating system can with high efficiente callback utilize these low-grade heat sources, for reduce energy consumption with
And alleviate atmosphere pollution and be of great significance, be conducive to social sustainable development.
There are two types of the operational modes of organic working medium power cycle generating system: single-unit operation and being incorporated into the power networks；Single-unit operation
The task of control system is to control Turbo-generator Set revolving speed near rated speed to guarantee the steady of generation frequency under mode
It is fixed；The task of control system is to guarantee system waste heat using maximization under the mode that is incorporated into the power networks.
Organic working medium power cycle generating system and power station electricity generation system the difference is that, power station electricity generation system boiler goes out
Mouth steam parameter is stablized, and does not need to be controlled it in Steam Turhine Adjustment, and organic working medium power cycle generating system steams
The steam parameter of hair device outlet can change as system condition changes, and needing to be controlled stablizes it near rated value.
When Heating style difference, i.e., the flow of heat source or temperature can be adjusted according to system condition (heat source adjustable) and heat source flow,
The arrangement form different from of control system when temperature is in fluctuation (heat source fluctuations)
A kind of organic working medium power cycle generating system coordinated control system of the present invention, including working medium pump 1, evaporator 4, tune
Valve 7, controller 8, turbine 9, generator 11 and condenser 12 are saved, one end of working medium pump 1 is successively through evaporator 4, turbine 9 and condensation
Device 12 connect to form working medium side circulation path with the other end of working medium pump 12, and regulating valve 7 is arranged between evaporator 4 and turbine 9
Connecting pipe on, the coaxially connected generator 11 of turbine 9 is provided with tachometric survey transmitter 10 between turbine 9 and generator 11,
Condenser 12 is connect with coolant intake pipe road 13, and evaporator 4 is connect by pipeline with organic working medium power cycle generating system,
Pressure measurement transmitter 5 and temperature measuring transducer 6 are provided on pipeline between evaporator 4 and regulating valve 7, controller 8 divides
It is not connected in parallel with pressure measurement transmitter 5, temperature measuring transducer 6, regulating valve 7, tachometric survey transmitter 10 and working medium pump 1
Form coordinated control system.
Organic working medium power cycle generating system includes flow or heat source is adjusted for temperature and flow, temperature are in fluctuation heat
It includes heat source pump 2 that heat source, which is adjusted, in source, flow or temperature, and heat source pump 2 is connect with controller 8, and heat source pump 2 is inputted by GEOTHERMAL WATER
Pipeline 3 and evaporator 4 connect, and transfer heat to after working medium side recharge to underground；It includes work that flow, temperature, which are in fluctuating heat source,
Amateurish heat input pipeline 14, industrial exhaust heat input channel 14 connect evaporator 4 and transfer heat to working medium side.
The present invention provides a kind of organic working medium power cycle generating system coordinated control system and methods, flow for utilizing
The operation of the organic working medium power cycle generating system of heat source (by taking GEOTHERMAL WATER as an example) in a stand-alone mode is adjusted in amount or temperature
It is proposed three kinds of adjusting methods；For the organic working medium power for being in fluctuating heat source (by taking industrial exhaust heat as an example) using flow, temperature
Operation of the cycle generating system under grid-connect mode proposes two kinds of adjusting methods；For the control of organic working medium power cycle generating system
The practical construction of system provides theoretical direction, provides technology for the safety in running, stability, high efficiency and protects
Barrier.The recycling for being conducive to promote low-grade heat source and renewable energy, improves efficiency of energy utilization.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being described and shown in usually here in attached drawing is real
The component for applying example can be arranged and be designed by a variety of different configurations.Therefore, below to the present invention provided in the accompanying drawings
The detailed description of embodiment be not intended to limit the range of claimed invention, but be merely representative of of the invention selected
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
By taking GEOTHERMAL WATER as an example, referring to Fig. 1, a kind of adjustable organic working medium cycle power generation system of heat source of the present invention, by
Working medium pump 1, heat supply input channel 3, evaporator 4, pressure measurement transmitter 5, temperature measuring transducer 6, is adjusted heat source pump 2
Valve 7, controller 8, turbine 9, tachometric survey transmitter 10, generator 11, condenser 12, coolant intake pipe road 13 is saved to form.
Working medium pump 1 is connect with evaporator 4, and evaporator 4 is connect with regulating valve 7, the connecting pipe of evaporator 4 and regulating valve 7
On be sequentially installed with temperature measuring transducer 5 and pressure measurement transmitter 6, regulating valve 7 is connect with turbine 9, turbine 9 and generator
11 is coaxially connected, and tachometric survey transmitter 10 is equipped in the connecting shaft of turbine 9 and generator 11, and turbine 9 and condenser 12 connect
It connects, condenser 12 connect to form working medium side circulation path with working medium pump 1.
GEOTHERMAL WATER input channel 3 is sequentially connected heat source pump 2 and evaporator 4 transfer heat to after working medium side recharge to
Under.
Coolant intake pipe road 13 is condensed organic working medium to liquid by exchanging heat with condenser 12.
Controller 8 and working medium pump 1, heat source pump 2, temperature measuring transducer 5, pressure measurement transmitter 6, regulating valve 7, revolving speed
Measuring transducer 10 is connected in parallel, and forms coordinated control system.
Organic working medium power cycle generating system is generally run in a stand-alone mode using GEOTHERMAL WATER as when heat source, quick
There are three sensing units: the temperature measuring transducer 6 of 4 outlet vapor of evaporator, the pressure measurement transmitter 5 that evaporator 4 exports, thoroughly
Flat 9 tachometric survey transmitter 10；There are three controlled volumes: turbine speed, evaporator outlet vapor (steam) temperature, evaporator outlet steam
Pressure.
Adjusting method has following three kinds:
1) turbine speed adjusts method
When extraneous electric load increases, turbine active torque is less than the electromagnetic resistance square of generator, and turbine speed decline is low
In rated speed, the tach signal measured is transferred to controller by tachometric survey transmitter, and controller is exported according to revolving speed deviation
Control instruction increases control valve opening, so that turbine inlet flow rate increases, turbine active torque is gradually increased, turbine speed decline
Speed slows down then turbine speed and is gradually increasing.
Control valve opening increase causes pipe resistance characteristic to reduce, and working medium pump rate of discharge increases, outlet pressure reduction is led
Outlet vapor pressure reduces while flow increases in induced evaporation device, is lower than rated pressure.
The pressure signal measured is transferred to controller by pressure measurement transmitter, and controller is exported according to pressure divergence and controlled
Instruction increases working medium revolution speed, and working medium pump discharge pressure increases, and evaporator outlet steam pressure is caused to rise；Simultaneously because heat source
The heat for being input to system is constant and the working medium flow increase in evaporator causes evaporator outlet vapor (steam) temperature to reduce, and is lower than volume
Determine temperature.
The temperature signal measured is transmitted to controller by temperature measuring transducer, and controller is exported according to temperature deviation and controlled
Instruction increases heat source revolution speed, and heat source flow increases, and the heat exchange amount of evaporator increases, and evaporator outlet vapor (steam) temperature rises.
Final system working medium flow is stablized in the larger value, and turbine speed, evaporator outlet steam pressure and temperature are all kept
Near rated value.
Coordinated control system when the control method of coordinated control system and extraneous electric load increase when extraneous electric load is reduced
The control method of system is completely opposite.
The first turbine speed, which adjusts method, can make full use of the heat storage capacity of evaporator to make system more quickly
Reach stable state, the requirement of power grid external load can be adapted to quickly, but Steam Pressure Fluctuation is larger in adjustment process.
2) turbine speed adjusts method
When extraneous electric load increases, turbine active torque is less than the electromagnetic resistance square of generator, and turbine speed decline is low
In rated speed, the tach signal measured is transferred to controller by tachometric survey transmitter, and controller is exported according to revolving speed deviation
Control instruction increases heat source revolution speed, and heat source flow increases, and the heat exchange amount of evaporator is consequently increased, so that evaporator outlet steams
Stripping temperature increases, and is higher than rated temperature.
The temperature signal measured is transmitted to controller by temperature measuring transducer, and controller exports control instruction and increases working medium
Revolution speed, in the case where resistance of pipe system characteristic is constant, working medium pump rate of discharge and pressure will all increase, and lead to work in evaporator
Mass flow amount increases, so that evaporator outlet vapor (steam) temperature declines；The rising of evaporator outlet steam pressure is also resulted in, is higher than
Rated pressure.
The pressure signal measured is transferred to controller by pressure measurement transmitter, and controller exports control instruction and increases valve
Aperture, resistance of pipe system characteristic reduce, and working medium pump discharge pressure reduces, and flow increases, and evaporator outlet steam pressure is caused to reduce,
Evaporator outlet steam flow increases, so that turbine inlet flow rate increases, turbine active torque is caused to increase, turbine speed decline
Speed slows down then turbine speed and is gradually increasing.
Final system working medium flow is stablized in the larger value, and turbine speed, evaporator outlet steam pressure and temperature are all kept
Near rated value.
Coordinated control system when the control method of coordinated control system and extraneous electric load increase when extraneous electric load is reduced
The control method of system is completely opposite.
Second of turbine speed adjusts method can make system reach stable state to protect in the case where Steam Pressure Fluctuation very little
The stabilization of turbine power generation frequency is demonstrate,proved, but adjustment speed is slower.
3) turbine speed adjusts method
When extraneous electric load increases, turbine active torque is less than the electromagnetic resistance square of generator, and turbine speed decline is low
In rated speed, the tach signal measured is transferred to controller by tachometric survey transmitter, and controller is exported according to revolving speed deviation
Control instruction increases working medium revolution speed, and in the case where resistance of pipe system characteristic is constant, working medium pump discharge pressure and flow all increase,
So that turbine inlet flow rate increases with it, turbine active torque is caused to increase, then turbine speed decrease speed slows down thoroughly
Flat turn speed is gradually increasing.The increase of working medium revolution speed leads to working medium flow increase in evaporator and heat source is input to the heat of system not
Become, evaporator outlet vapor (steam) temperature is caused to reduce, is lower than rated temperature.
The temperature signal measured is transmitted to controller by temperature measuring transducer, and controller is exported according to temperature deviation and controlled
Instruction increases heat source revolution speed, and heat source flow increases, and the heat exchange amount of evaporator is consequently increased, in evaporator outlet vapor (steam) temperature
It rises；Simultaneously because working medium revolution speed increases, working medium pump discharge pressure increases, and causes evaporator outlet steam pressure to rise, is higher than
Rated pressure.
The pressure signal measured is transferred to controller by pressure measurement transmitter, and controller is exported according to pressure divergence and controlled
Instruction increases valve opening, and resistance of pipe system characteristic reduces, and working medium pump discharge pressure reduces, and evaporator exit pressure is caused to reduce.
Final system working medium flow is stablized in the larger value, and turbine speed, evaporator outlet steam pressure and temperature are all kept
Near rated value.
Coordinated control system when the control method of coordinated control system and extraneous electric load increase when extraneous electric load is reduced
The control method of system is completely opposite.
The third turbine speed adjusts the characteristics of comprehensive first two turbine speed of method adjusts method, can be little in Steam Pressure Fluctuation
In the case where make system faster reach stable state to guarantee the stabilization of turbine power generation frequency, without generating pressure oscillation
The excessive and too long situation of regulating time.
By taking industrial exhaust heat as an example, referring to Fig. 2, a kind of organic working medium cycle power generation system of heat source fluctuations, by working medium pump
1, industrial exhaust heat input channel 14, evaporator 4, pressure measurement transmitter 5, temperature measuring transducer 6, regulating valve 7, controller 8,
Turbine 9, generator 11, condenser 12, coolant intake pipe road 13 form.
Working medium pump 1 is connect with evaporator 4, and evaporator 4 is connect with regulating valve 7, the connecting pipe of evaporator 4 and regulating valve 7
On be sequentially installed with pressure measurement transmitter 5 and temperature measuring transducer 6, regulating valve 7 is connect with turbine 9, turbine 9 and generator
11 is coaxially connected, and turbine 9 is connect with condenser 12, and condenser 12 connect to form working medium side circulation path with working medium pump 1.
Industrial exhaust heat input channel 14 connects evaporator 4 and transfers heat to working medium side.
Coolant intake pipe road 13 is condensed organic working medium to liquid by exchanging heat with condenser 12；Controller 8 and working medium
Pump 1, temperature measuring transducer 6, pressure measurement transmitter 5, regulating valve 7 are connected in parallel, and form coordinated control system.
Organic working medium power cycle generating system is using industrial exhaust heat as when heat source, since heat source temperature flow is in wave
In dynamic, single-unit operation it is difficult to ensure that turbine speed and generation frequency stabilization, generally run under grid-connect mode；It is incorporated into the power networks
When, using the organic working medium driven power generation system of industrial exhaust heat according to Waste Heat Reuse maximization principle, turbine speed is tieed up by power grid
It holds, there are two sensing elements: the temperature measuring transducer 6 of 4 outlet vapor of evaporator, the pressure measurement pick-up that evaporator 4 exports
Device 5；There are two controlled volumes: evaporator outlet steam pressure, evaporator outlet vapor (steam) temperature.
Adjusting method is that turbine initial steam pressure adjusts method
When industrial exhaust heat flow or temperature increase, input system heat increases, so that evaporator heat exchange amount increases, into
And evaporator outlet vapor (steam) temperature is increased, it is higher than rated temperature.Temperature measuring transducer transmits the temperature signal measured
To controller, controller exports control instruction according to temperature deviation and increases working medium revolution speed, the constant situation of resistance of pipe system characteristic
Under, working medium pump rate of discharge increases, and causes working medium flow in evaporator to increase, so that evaporator outlet vapor (steam) temperature subtracts
It is small；Working medium pump discharge pressure increase simultaneously causes evaporator outlet steam pressure to increase, and is higher than rated pressure.
The pressure signal measured is transferred to controller by pressure measurement transmitter, and controller increases according to output control instruction
Valve opening, resistance of pipe system characteristic reduce, and working medium pump discharge pressure reduces, and evaporator outlet steam pressure is caused to reduce.
Final system working medium flow is stablized in the larger value, and it is attached that evaporator outlet steam pressure and temperature are held at rated value
Closely.
When industrial exhaust heat flow or temperature reduce the control method of coordinated control system and industrial exhaust heat flow or
The control method that temperature increases constantly coordinated control system is completely opposite.
Turbine initial steam pressure adjusts method can make system rapidly reach stable shape in the case where Steam Pressure Fluctuation very little
State allows organic working medium cycle power generation system to reach the maximum of UTILIZATION OF VESIDUAL HEAT IN in the case where guaranteeing that turbine initial steam pressure is stablized
Change.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (9)
1. a kind of organic working medium power cycle generating system coordinated control system, which is characterized in that including being in turn connected to form work
Working medium pump (1), evaporator (4), turbine (9) and the condenser (12) of matter side circulation path, between evaporator (4) and turbine (9)
It is provided with regulating valve (7), pressure measurement transmitter (5) and temperature measurement pick-up is provided between evaporator (4) and regulating valve (7)
Device (6), turbine (9) coaxially connected generator (11), is provided with tachometric survey transmitter between turbine (9) and generator (11)
(10), condenser (12) is connect with coolant intake pipe road (13), and evaporator (4) is sent out by pipeline and organic working medium power cycle
Electric system connection, working medium pump (1), pressure measurement transmitter (5), temperature measuring transducer (6), regulating valve (7) and tachometric survey
Transmitter (10) is connected in parallel composition coordinated control system with controller (8).
2. a kind of organic working medium power cycle generating system coordinated control system according to claim 1, which is characterized in that
Organic working medium power cycle generating system peace heat source includes flow or heat source is adjusted for temperature and flow, temperature are in fluctuation heat
It includes heat source pump (2) that heat source, which is adjusted, in source, flow or temperature, and heat source pump (2) is connect with controller (8), and heat source pump (2) passes through ground
Hot water input channel (3) and evaporator (4) connection transfer heat to after working medium side recharge to underground；Flow, temperature are in wave
Dynamic heat source includes industrial exhaust heat input channel (14), and industrial exhaust heat input channel (14) connection evaporator (4) transfers heat to
Working medium side.
3. a kind of coordinated control side of organic working medium power cycle generating system coordinated control system as claimed in claim 1 or 2
Method, which is characterized in that the organic working medium power cycle generating system of heat source is adjusted in single machine mould for using flow or temperature
Operation under formula carries out turbine speed according to temperature measuring transducer, pressure measurement transmitter and tachometric survey transmitter respectively
It adjusts；Fortune of the organic working medium power cycle generating system of fluctuating heat source under grid-connect mode is in for using flow, temperature
Row, carries out turbine initial steam pressure adjusting according to temperature measuring transducer and pressure measurement transmitter respectively.
4. according to the method described in claim 3, it is characterized in that, for organic work that heat source is adjusted using flow or temperature
The operation of matter power cycle generating system in a stand-alone mode, turbine speed adjust method specifically:
When extraneous electric load increases, turbine active torque is less than the electromagnetic resistance square of generator, and turbine speed decline is lower than volume
Determine revolving speed, the tach signal measured is transferred to controller by tachometric survey transmitter, and controller is exported according to revolving speed deviation and controlled
Instruction increases control valve opening, and turbine inlet flow rate increases, and turbine active torque is gradually increased, and turbine speed decrease speed subtracts
Slow, turbine speed is gradually increasing；
Since control valve opening increase causes pipe resistance characteristic to reduce, working medium pump rate of discharge increases, outlet pressure reduction is led
Outlet vapor pressure reduces while flow increases in induced evaporation device, is lower than rated pressure, and pressure measurement transmitter will measure
Pressure signal is transferred to controller, and controller exports control instruction according to pressure divergence and increases working medium revolution speed, working medium pump discharge
Pressure increases, and evaporator outlet steam pressure rises；Evaporator outlet vapor (steam) temperature reduces, and is lower than rated temperature；
The temperature signal measured is transmitted to controller by temperature measuring transducer, and controller exports control instruction according to temperature deviation
Increase heat source revolution speed, heat source flow increases, and the heat exchange amount of evaporator increases, and evaporator outlet vapor (steam) temperature rises；
Final system working medium flow is stablized in the larger value, and turbine speed, evaporator outlet steam pressure and temperature all keep specified
Value.
5. according to the method described in claim 3, it is characterized in that, for organic work that heat source is adjusted using flow or temperature
The operation of matter power cycle generating system in a stand-alone mode, turbine speed adjust method specifically:
When extraneous electric load increases, turbine active torque is less than the electromagnetic resistance square of generator, and turbine speed decline is lower than volume
Determine revolving speed, the tach signal measured is transferred to controller by tachometric survey transmitter, and controller is exported according to revolving speed deviation and controlled
Instruction increases heat source revolution speed, and heat source flow increases, and the heat exchange amount of evaporator increases, and evaporator outlet vapor (steam) temperature increases, high
In rated temperature；
The temperature signal measured is transmitted to controller by temperature measuring transducer, and controller exports control instruction and increases working medium pump turn
Speed, in the case where resistance of pipe system characteristic is constant, working medium pump rate of discharge and pressure increase, under evaporator outlet vapor (steam) temperature
Drop；Evaporator outlet steam pressure rises, and is higher than rated pressure；
The pressure signal measured is transferred to controller by pressure measurement transmitter, and controller output control instruction increases valve and opens
Degree, resistance of pipe system characteristic reduce, and working medium pump discharge pressure reduces, and flow increases, and evaporator outlet steam pressure reduces, evaporator
Outlet vapor flow increases, and turbine inlet flow rate increases, and turbine active torque increases, and turbine speed decrease speed slows down, turbine
Revolving speed is gradually increasing；
Final system working medium flow is stablized in the larger value, and turbine speed, evaporator outlet steam pressure and temperature all keep specified
Value.
6. according to the method described in claim 3, it is characterized in that, for organic work that heat source is adjusted using flow or temperature
The operation of matter power cycle generating system in a stand-alone mode, turbine speed adjust method specifically:
When extraneous electric load increases, turbine active torque is less than the electromagnetic resistance square of generator, and turbine speed decline is lower than volume
Determine revolving speed, the tach signal measured is transferred to controller by tachometric survey transmitter, and controller is exported according to revolving speed deviation and controlled
Instruction increases working medium revolution speed, and in the case where resistance of pipe system characteristic is constant, working medium pump discharge pressure and flow increase, turbine into
Mouth flow increases, and turbine active torque increases, and turbine speed decrease speed slows down then turbine speed and is gradually increasing；
The increase of working medium revolution speed leads to that working medium flow in evaporator increases and heat that heat source is input to system is constant, causes to evaporate
Device outlet steam temperature reduces, and is lower than rated temperature；The temperature signal measured is transmitted to controller by temperature measuring transducer, control
Device processed exports control instruction according to temperature deviation and increases heat source revolution speed, and heat source flow increases, and the heat exchange amount of evaporator increases, and steams
Device outlet steam temperature is sent out to rise；Simultaneously because working medium revolution speed increases, working medium pump discharge pressure increases, and leads to evaporator outlet
Steam pressure rises, and is higher than rated pressure；
The pressure signal measured is transferred to controller by pressure measurement transmitter, and controller exports control instruction according to pressure divergence
Increase valve opening, resistance of pipe system characteristic reduces, and working medium pump discharge pressure reduces, and evaporator exit pressure reduces；
Final system working medium flow is stablized in the larger value, and turbine speed, evaporator outlet steam pressure and temperature all keep specified
Value.
7. according to method described in claim 4 or 5 or 6, which is characterized in that the coordinated control system when extraneous electric load is reduced
Control method when increasing with extraneous electric load the control method of coordinated control system it is opposite.
8. according to the method described in claim 3, it is characterized in that, being in the organic of fluctuating heat source for using flow, temperature
Operation of the working medium power cycle generating system under grid-connect mode, turbine initial steam pressure are adjusted specifically:
When industrial exhaust heat flow or temperature increase, input system heat increases, and evaporator heat exchange amount increases, evaporator outlet
Vapor (steam) temperature increases, and is higher than rated temperature；
The temperature signal measured is transmitted to controller by temperature measuring transducer, and controller exports control instruction according to temperature deviation
Increase working medium revolution speed, in the case that resistance of pipe system characteristic is constant, working medium pump rate of discharge increases, and working medium flow increases in evaporator
Greatly, evaporator outlet vapor (steam) temperature reduces；Working medium pump discharge pressure increase simultaneously causes evaporator outlet steam pressure to increase, high
In rated pressure；
The pressure signal measured is transferred to controller by pressure measurement transmitter, and controller increases valve according to output control instruction
Aperture, resistance of pipe system characteristic reduce, and working medium pump discharge pressure reduces, and evaporator outlet steam pressure reduces；
Final system working medium flow is stablized in the larger value, and evaporator outlet steam pressure and temperature are held at rated value.
9. according to the method described in claim 8, it is characterized in that, when industrial exhaust heat flow or temperature reduce control system
Operation and industrial exhaust heat flow or temperature when increasing the operation of control system it is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003367.3A CN109026237B (en) | 2018-08-30 | 2018-08-30 | A kind of organic working medium power cycle generating system coordinated control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003367.3A CN109026237B (en) | 2018-08-30 | 2018-08-30 | A kind of organic working medium power cycle generating system coordinated control system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109026237A CN109026237A (en) | 2018-12-18 |
| CN109026237B true CN109026237B (en) | 2019-11-08 |
Family
ID=64625660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811003367.3A Active CN109026237B (en) | 2018-08-30 | 2018-08-30 | A kind of organic working medium power cycle generating system coordinated control system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109026237B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230524A (en) * | 2019-03-12 | 2019-09-13 | 华电电力科学研究院有限公司 | A kind of efficient distributed top pressure power generation Power quality management system and method |
| CN109990202A (en) * | 2019-03-19 | 2019-07-09 | 华电电力科学研究院有限公司 | A kind of pressure regulating system and method based on steam top pressure power generation |
| CN113217132B (en) * | 2021-04-29 | 2023-09-19 | 广东核电合营有限公司 | Steam conversion control device and method for nuclear power station and steam conversion system |
| CN116430924B (en) * | 2023-06-13 | 2023-09-08 | 百穰新能源科技(深圳)有限公司 | Temperature control method, temperature control device, computer equipment and computer readable storage medium |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594966A (en) * | 2015-01-27 | 2015-05-06 | 杭州哲达科技股份有限公司 | ORC (Organic Rankine Cycle) compressed air making device provided with liquid ejection device and method thereof |
| CN105041586B (en) * | 2015-07-23 | 2018-02-06 | 中国科学院广州能源研究所 | Geothermal power generation plant and its real-time monitoring system |
| CN106545476B (en) * | 2016-12-26 | 2023-03-07 | 天津大学 | Flash evaporation active control system and method adaptive to solar organic Rankine cycle |
-
2018
- 2018-08-30 CN CN201811003367.3A patent/CN109026237B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109026237A (en) | 2018-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109026237B (en) | A kind of organic working medium power cycle generating system coordinated control system and method | |
| US11236633B2 (en) | Solar aided coal-fired power generation system participating in primary frequency regulation and control method thereof | |
| CN102562504B (en) | Wind energy-solar energy combined energy storage generating system | |
| AU2015245828B2 (en) | Solar thermal and BIGCC-integrated hybrid power generation system | |
| CN104251143B (en) | Start control unit for steam turbine plant | |
| CN102094690B (en) | Engine exhaust gas and waste heat utilization system based on single-screw expansion engine | |
| CN111058911B (en) | Thermal generator set cold end back pressure real-time control method based on environment wet bulb temperature | |
| CN103216282A (en) | Thermal power generating unit loading control system and method based on continuously adjustable back pressure | |
| CN103696816B (en) | A kind of resuperheat low capacity split shaft Turbo-generator Set | |
| CN103678915A (en) | Thermal power plant generator set varying duty energy consumption analysis method based on approach method | |
| CN203925625U (en) | Waste heat of coke oven crude gas reclaims power generation system | |
| CN104807205A (en) | Photovoltaic, photo-thermal and medium heat storage combined energy supply system | |
| CN204267119U (en) | Oil field geothermal tail water is utilized to carry out the equipment of dual-circulation screw expansion machine generating | |
| CN110360538A (en) | A kind of vapor (steam) temperature control method of double reheat boiler during varying duty | |
| CN201891524U (en) | Engine exhaust afterheat utilization system based on single-screw expansion machine | |
| CN201705576U (en) | Hydraulic transmission speed change frequency stabilization windmill generator | |
| CN108196452B (en) | Heat supply unit optimal initial pressure operation control system and method based on heat balance | |
| CN207212422U (en) | Automatic feedback adjustable type steam source organic Rankine bottoming cycle generating set | |
| CN206942815U (en) | Steam Turbine attachment structure | |
| CN215057621U (en) | Double-fed system-based water supply and condensed water optimization cooperative system for wet cooling unit | |
| CN111486069B (en) | Energy management device for solar-assisted ocean thermoelectric power generation system | |
| CN104061031B (en) | Waste heat of coke oven crude gas reclaims power generation system and method | |
| CN107269334A (en) | A kind of new and effective steam electric power generator | |
| CN103670942A (en) | Gas-liquid two-phase energy storage and power compensation system of wind power plant | |
| CN209469458U (en) | A kind of back pressure type heat supply steam turbine energy conservation regulating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |