CN107451698A - A kind of Optimized Operation device and dispatching method applied to multimode heat supply power plant - Google Patents
A kind of Optimized Operation device and dispatching method applied to multimode heat supply power plant Download PDFInfo
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Abstract
A kind of Optimized Operation device and dispatching method applied to multimode heat supply power plant, it is related to Optimized Operation field.The present invention be in order to solve it is existing lack meet the instruction of electric load that power network provides and thermal load demands that heat user provides on the premise of, the problem of scheduling mode is optimized to cogeneration units.For gathering the data acquisition module of the signals such as unit pressure, temperature, flow and electrical power；For calculating and optimizing data processing and the optimization computing module of unit thermal performance；The method of operation of result dispatches output module after being handled for output；Pressure, temperature, flow and the electrical power value of data collecting module collected unit, obtain required pressure, temperature, flow and electrical power value after data processing module is handled；Method of operation scheduling output module provides the optimum operation scheduling mode of unit.The present invention is applied to the thermoelectricity scheduling of the cogeneration units of multimode heat supply.
Description
Technical field
The present invention relates to the Optimization Scheduling applied to multimode heat supply power plant, belongs to Optimized Operation field.
Background technology
The regional winter heating period peak load regulation network in China " three Norths " is difficult, abandons wind, to abandon optical phenomenon serious.Cogeneration units supply
The hot phase carries out " electricity determining by heat " policy, and coupled thermomechanics cause its peak modulation capacity poor, is to influence " three Norths " regional winter peak regulation
One of principal element.To realize the target of energy-saving and emission-reduction, National Development and Reform Committee, Bureau of Energy, which have put into effect, improves fired power generating unit flexibility
Relevant policies, for corresponding ethical policy can be given in the unit of heat supply period depth peak regulation.Some cogeneration units are real
Flexibility transformation has been applied, in addition to traditional extraction for heat supply and back pressure heat-supplying mode, Heat Supplying with Low Vacuum, heat pump heat supply, pressure and temperature reducing
A variety of heat-supplying modes such as device heat supply, accumulation of energy (water) tank, solid heat storage, electric boiler heat supply are used by successive steam power plant, join thermoelectricity
The peak modulation capacity of production unit is increased dramatically.
In the case where the thermal load demands that the electric load that dispatching of power netwoks provides instructs and heat user provides are certain, thermoelectricity
Coproduction unit has the selection of a variety of heat-supplying modes, how to optimize scheduling, makes the maximization of economic benefit of enterprise, has
Highly important meaning.
The content of the invention
The present invention be in order to solve it is existing lack born in the heat for meeting the instruction of electric load that power network provides and heat user provides
On the premise of lotus demand, the problem of scheduling mode is optimized to cogeneration units.A kind of multimode that is applied to now is provided to supply
The Optimized Operation device and dispatching method of steam power plant.
A kind of Optimized Operation device applied to multimode heat supply power plant, it includes data acquisition module 1, mean value calculation
Module 2-1, instrument correcting module 2-2, pressure pretreatment module 2-3, performance calculation module 2-4 and optimization computing module 2-
5 and the method for operation scheduling output module 3,
Data acquisition module 1, neutralized for each Steam Turbine therrmodynamic system of multi collect in outside each heating system
The pressure value of water and steam, temperature value, the Active Power of flow value and generator, motor and transformer；
Mean value calculation module 2-1, for what is arrived according to each Steam Turbine and outside each heating system multi collect
Data calculate each Steam Turbine and the outside each pressure mean values of heating system, temperature averages, flow average value respectively
And electrical power mean values；
Instrument correcting module 2-2, for correcting pressure mean values, the temperature of each Steam Turbine and outside each heating system
Average value, flow average value and electrical power mean values are spent, it is average to obtain revised pressure mean values, temperature averages, flow
Value and electrical power mean values；
Pressure pretreatment module 2-3, for the pressure to revised each Steam Turbine and outside each heating system
Average value is pre-processed, and obtains the pressure value of pretreated each Steam Turbine and outside each heating system；
Performance calculation module 2-4, for according to pressure value, revised temperature value, flow value and electricity after pretreatment
Performance number calculates the heat consumption rate of each Steam Turbine and outside each heating system respectively；
Optimize computing module 2-5, it is each on the basis of dispatching of power netwoks instruction and heat user requirement command is met, comparing
The heat consumption rate of Steam Turbine and outside each heating system, select heat consumption rate small in Steam Turbine and outside each heating system
Carry out heat supply be optimal heat-supplying mode, by optimal heat-supplying mode be sent to the method for operation scheduling output module 3；
The output module 3 of method of operation scheduling, for realizing heat supply using the small unit of heat consumption rate or outside heating system.
Beneficial effects of the present invention are：
The present invention is used by data collecting module collected unit and outside each heating system parameter, data acquisition module
Transmitter, thermocouple, flow-through orifice (differential pressure transmitter) and three-phase power meter realize that accuracy of data acquisition is high；Collect
Unit parameter respectively obtains the heat consumption of unit and outside each heating system after data processing and optimization computing module processing
Rate, supported so as to provide data for follow-up Optimization Work, the method for operation after optimization is using method of operation scheduling
Output module exports, and whole data acquisition, the data accuracy of data handling procedure are high, compared to existing Steam Turbine routinely
The processing method of energy parameter, data result accuracy rate of the invention are high by more than 30%.
Data processing method of the present invention is simple, and the unit thermal performance by data processing is more accurate, passes through
The traffic control mode of optimization will provide higher Business Economic Benefit for steam power plant.The present invention is applied to supply using various ways
The Optimized Operation of the steam power plant of heat.
Brief description of the drawings
Fig. 1 is a kind of structured flowchart of Optimized Operation device applied to multimode heat supply power plant of the present invention.
Embodiment
Embodiment one：Reference picture 1 illustrates present embodiment, and one kind described in present embodiment is applied to more
The Optimized Operation device of mode heat supply power plant, it includes data acquisition module 1, mean value calculation module 2-1, instrument correcting module
2-2, pressure pretreatment module 2-3, performance calculation module 2-4 and optimization computing module 2-5 and the method for operation are dispatched defeated
Go out module 3,
Data acquisition module 1, neutralized for each Steam Turbine therrmodynamic system of multi collect in outside each heating system
The pressure value of water and steam, temperature value, the Active Power of flow value and generator, motor and transformer；
Mean value calculation module 2-1, for what is arrived according to each Steam Turbine and outside each heating system multi collect
Data calculate each Steam Turbine and the outside each pressure mean values of heating system, temperature averages, flow average value respectively
And electrical power mean values；
Instrument correcting module 2-2, for correcting pressure mean values, the temperature of each Steam Turbine and outside each heating system
Average value, flow average value and electrical power mean values are spent, it is average to obtain revised pressure mean values, temperature averages, flow
Value and electrical power mean values；
Pressure pretreatment module 2-3, for the pressure to revised each Steam Turbine and outside each heating system
Average value is pre-processed, and obtains the pressure value of pretreated each Steam Turbine and outside each heating system；
Performance calculation module 2-4, for according to pressure value, revised temperature value, flow value and electricity after pretreatment
Performance number calculates the heat consumption rate of each Steam Turbine and outside each heating system respectively；
Optimize computing module 2-5, it is each on the basis of dispatching of power netwoks instruction and heat user requirement command is met, comparing
The heat consumption rate of Steam Turbine and outside each heating system, select heat consumption rate small in Steam Turbine and outside each heating system
Carry out heat supply be optimal heat-supplying mode, by optimal heat-supplying mode be sent to the method for operation scheduling output module 3；
The output module 3 of method of operation scheduling, for realizing heat supply using the small unit of heat consumption rate or outside heating system.
In present embodiment, in practice, optimal heat-supplying mode will combine unit income, power supply income, heat supply income, political affairs
Plan compensates income and every cost of generating and heat supply and determined.
Namely according to formula：
And the most cost effective heat-supplying mode determined；
Wherein, INCOMEoptimizeRepresent the unit income after optimization；INCOMEpow(i) power supply income is represented；INCOMEthe
(i) heat supply income is represented；INCOMEcom(i) policy compensation income is represented；COST (i) represents to generate electricity and every cost of heat supply；i
Represent a variety of different heat supply schemes.
Mean value calculation module 2-1, for according to each Steam Turbine multi collect to data calculate each vapour respectively
The process for taking turns the pressure mean values of unit, temperature averages, flow average value and electrical power mean values is：
According to formula：
Pressure mean values, temperature averages, flow average value and electrical power mean values are obtained respectively,
Wherein, XnRepresent that pressure, temperature, flow or electrical power, n are times of collection.
The application is by obtaining the heat consumption rate of each Steam Turbine and outside each heating system, so as to select heat consumption rate small
Unit and outside heating system carry out heat supply, so reduce heat cost.
Embodiment two：Present embodiment is to be applied to multimode heat supply to one kind described in embodiment one
The Optimized Operation device of power plant is described further, and in present embodiment, gathers Steam Turbine therrmodynamic system reclaimed water and steam
Pressure value is realized using pressure transmitter；The temperature value for gathering Steam Turbine therrmodynamic system reclaimed water and steam is real using thermocouple
It is existing；The flow value for gathering Steam Turbine therrmodynamic system reclaimed water and steam is realized using flow-through orifice and differential pressure transmitter；Collection hair
The Active Power of motor, motor and transformer is realized using three-phase power meter.
In present embodiment, differential pressure transmitter has the function that gathered data.
Embodiment three：Present embodiment is to be applied to multimode heat supply to one kind described in embodiment two
The Optimized Operation device of power plant is described further, and in present embodiment, corrects pressure mean values, the temperature of each Steam Turbine
Average value, flow average value and electrical power mean values, obtain revised pressure mean values, temperature averages, flow average value
Process with electrical power mean values is：
Pressure mean values are added with the error amount that pressure converter obtains after calibrating by adder, so as to be repaiied
Pressure value after just；
Temperature averages are added with the error amount that thermocouple obtains after calibrating by adder, after obtaining amendment
Temperature value；
Flow average value is added with the error amount that flow-through orifice obtains after calibrating by adder, so as to be corrected
Flow value afterwards；
Electrical power mean values are added with the error amount that three-phase power meter obtains after calibrating by adder, so as to obtain
Revised electrical power value.
In present embodiment, pressure converter error amount refers to the error amount that pressure converter obtains after calibrating；Heat
Galvanic couple error amount refers to the error amount that thermocouple obtains after calibrating；Flow-through orifice (differential pressure transmitter) error amount refers to flowing
The error amount that orifice (differential pressure transmitter) obtains after calibrating；Three-phase power meter error amount refers to three-phase power meter through calibrating
The error amount obtained afterwards.
Embodiment four：Present embodiment is to be applied to multimode heat supply to one kind described in embodiment two
The Optimized Operation device of power plant is described further, in present embodiment, the pressure value of pretreated each Steam Turbine
Acquisition process is：
Step A, by the way that revised pressure value is added with actual measurement atmospheric pressure value, so as to obtain absolute pressure value；
If step B, the installation site of pressure transmitter is higher than pressure samples point, by adder by absolute pressure value with
Head pressure force value is added, so as to obtain pretreated amendment pressure value；
If the installation site of pressure transmitter is less than pressure samples point, by subtracter by absolute pressure value and head pressure
Force value is subtracted each other, so as to correct pressure value after being pre-processed；
Wherein, the pressure value that altitude conversion of the head pressure force value between pressure transmitter and pressure samples point position goes out,
Head pressure force value is represented with P, and P=ρ gh, wherein, ρ is water density, and g is acceleration of gravity, and h is that pressure transmitter takes with pressure
Height between sampling point position.
Embodiment five：Present embodiment is to be applied to multimode heat supply to one kind described in embodiment one
The Optimized Operation device of power plant is described further, in present embodiment, according to pressure value, revised temperature after pretreatment
The process for the heat consumption rate that value, flow value and electrical power value calculate each Steam Turbine is：
Pretreated amendment pressure value and amendment temperature value are input in water and the software for calculation of vapor quality, from this
Enthalpy is exported in software,
Further according to formula：
HRtest=(Gms*Ims+Ghrh*Ihrh-Gfw*Ifw-Gcrh*Icrh-Gshs*Ishs-Grhs*Irhs)/P,
Obtain heat consumption rate HRtest,
Wherein, G represents flow；I represents enthalpy, and P represents the net electrical power of the generator of steam turbine；Gms represents main steam flow
Amount；Ims represents the enthalpy of main steam；Ghrh represents reheat heat steam flow, and Ihrh represents the enthalpy of reheat heat steam, and Gfw is represented to
Water-carrying capacity, Ifw represent the enthalpy of feedwater, and Gcrh represents cold reheated steam flow, the enthalpy of the cold reheated steams of Icrh, and Gshs represents overheat
Attemperation water flow, Ishs represent the enthalpy of overheat desuperheating water, and Grhs represents reheating attemperation water flow, and Irhs represents reheating desuperheating water
Enthalpy.
In present embodiment, P represents the net electrical power of the generator of steam turbine, and net electrical power actually refers to steam turbine generator
The general power that group is sent-(power of each heating system autophage in power+outside of Steam Turbine autophage)=remaining
Power.
Embodiment six：A kind of Optimized Operation side applied to multimode heat supply power plant described in present embodiment
Method, in present embodiment, it the described method comprises the following steps：
Outside each heating system reclaimed water and the pressure of steam are neutralized for each Steam Turbine therrmodynamic system of multi collect
The step of Active Power of value, temperature value, flow value and generator, motor and transformer；
For according to each Steam Turbine and outside each heating system multi collect to data calculate each vapour respectively
Take turns the step of unit and the outside each pressure mean values of heating system, temperature averages, flow average value and electrical power mean values
Suddenly；
Put down for correcting each Steam Turbine and the outside each pressure mean values of heating system, temperature averages, flow
Average and electrical power mean values, obtain revised pressure mean values, temperature averages, flow average value and electrical power mean values
The step of；
For being pre-processed to the pressure mean values of revised each Steam Turbine and outside each heating system, obtain
The step of to the pressure value of pretreated each Steam Turbine and outside each heating system；
For calculating each vapour respectively according to pressure value, revised temperature value, flow value and electrical power value after pretreatment
The step of taking turns unit and outside each heat consumption rate of heating system；
For on the basis of dispatching of power netwoks instruction and heat user requirement command is met, more each Steam Turbine and outside to be every
The heat consumption rate of individual heating system, it is optimal that the small carry out heat supply of heat consumption rate is selected in Steam Turbine and outside each heating system
Heat-supplying mode, by optimal heat-supplying mode be sent to the method for operation scheduling output module 3 the step of；
The step of for realizing heat supply using the small unit of heat consumption rate or outside heating system.
Claims (6)
1. a kind of Optimized Operation device applied to multimode heat supply power plant, it is characterised in that it includes data acquisition module
(1), mean value calculation module (2-1), instrument correcting module (2-2), pressure pretreatment module (2-3), performance calculation mould
Block (2-4) and optimization computing module (2-5) and the output module (3) of method of operation scheduling,
Data acquisition module (1), outside each heating system reclaimed water is neutralized for each Steam Turbine therrmodynamic system of multi collect
The Active Power of pressure value, temperature value, flow value and generator, motor and transformer with steam；
Mean value calculation module (2-1), for the number arrived according to each Steam Turbine and outside each heating system multi collect
According to calculate respectively the pressure mean values of each Steam Turbine and outside each heating system, temperature averages, flow average value and
Electrical power mean values；
Instrument correcting module (2-2), for correcting pressure mean values, the temperature of each Steam Turbine and outside each heating system
Average value, flow average value and electrical power mean values, obtain revised pressure mean values, temperature averages, flow average value
And electrical power mean values；
Pressure pretreatment module (2-3), for being put down to the pressure of revised each Steam Turbine and outside each heating system
Average is pre-processed, and obtains the pressure value of pretreated each Steam Turbine and outside each heating system；
Performance calculation module (2-4), for according to pressure value, revised temperature value, flow value and electric work after pretreatment
Rate value calculates the heat consumption rate of each Steam Turbine and outside each heating system respectively；
Optimize computing module (2-5), on the basis of dispatching of power netwoks instruction and heat user requirement command is met, more each vapour
Unit and the heat consumption rate of outside each heating system are taken turns, selects heat consumption rate small in Steam Turbine and outside each heating system
Progress heat supply is optimal heat-supplying mode, and optimal heat-supplying mode is sent to the output module (3) of method of operation scheduling；
The output module (3) of method of operation scheduling, for realizing heat supply using the small unit of heat consumption rate or outside heating system.
2. a kind of Optimized Operation device applied to multimode heat supply power plant according to claim 1, it is characterised in that adopt
The pressure value for collecting Steam Turbine therrmodynamic system reclaimed water and steam is realized using pressure transmitter；Gather in Steam Turbine therrmodynamic system
The temperature value of water and steam is realized using thermocouple；The flow value of collection Steam Turbine therrmodynamic system reclaimed water and steam uses flow
Orifice plate and differential pressure transmitter are realized；The Active Power for gathering generator, motor and transformer is realized using three-phase power meter.
3. a kind of Optimized Operation device applied to multimode heat supply power plant according to claim 2, it is characterised in that repair
Pressure mean values, temperature averages, flow average value and the electrical power mean values of just each Steam Turbine, obtain revised pressure
Power average value, temperature averages, the process of flow average value and electrical power mean values are：
Pressure mean values are added with the error amount that pressure converter obtains after calibrating by adder, after obtaining amendment
Pressure value；
Temperature averages are added with the error amount that thermocouple obtains after calibrating by adder, so as to obtain revised temperature
Angle value；
Flow average value is added with the error amount that flow-through orifice obtains after calibrating by adder, it is revised so as to obtain
Flow value；
Electrical power mean values are added with the error amount that three-phase power meter obtains after calibrating by adder, so as to be corrected
Electrical power value afterwards.
4. a kind of Optimized Operation device applied to multimode heat supply power plant according to claim 2, it is characterised in that pre-
The acquisition process of the pressure value of each Steam Turbine after processing is：
Step A, by the way that revised pressure value is added with actual measurement atmospheric pressure value, so as to obtain absolute pressure value；
If step B, the installation site of pressure transmitter is higher than pressure samples point, by adder by absolute pressure value and the discrepancy in elevation
Pressure value is added, so as to obtain pretreated amendment pressure value；
If the installation site of pressure transmitter is less than pressure samples point, by subtracter by absolute pressure value and head pressure force value
Subtract each other, so as to correct pressure value after being pre-processed；
Wherein, the pressure value that altitude conversion of the head pressure force value between pressure transmitter and pressure samples point position goes out, the discrepancy in elevation
Pressure value is represented with P, and P=ρ gh, wherein, ρ is water density, and g is acceleration of gravity, and h is pressure transmitter and pressure samples point
Height between position.
A kind of 5. Optimized Operation device applied to multimode heat supply power plant according to claim 1, it is characterised in that root
Pressure value, revised temperature value, flow value and electrical power value calculate the mistake of the heat consumption rate of each Steam Turbine after Data preprocess
Cheng Wei：
Pretreated amendment pressure value and amendment temperature value are input in water and the software for calculation of vapor quality, from the software
Middle output enthalpy,
Further according to formula：
HRtest=(Gms*Ims+Ghrh*Ihrh-Gfw*Ifw-Gcrh*Icrh-Gshs*Ishs-Grhs*Irhs)/P,
Obtain heat consumption rate HRtest,
Wherein, G represents flow；I represents enthalpy, and P represents the net electrical power of the generator of steam turbine；Gms represents main steam flow；
Ims represents the enthalpy of main steam；Ghrh represents reheat heat steam flow, and Ihrh represents the enthalpy of reheat heat steam, and Gfw is represented to current
Amount, Ifw represent the enthalpy of feedwater, and Gcrh represents cold reheated steam flow, the enthalpy of the cold reheated steams of Icrh, and Gshs represents overheat desuperheat
Water-carrying capacity, Ishs represent the enthalpy of overheat desuperheating water, and Grhs represents reheating attemperation water flow, and Irhs represents the enthalpy of reheating desuperheating water.
6. a kind of Optimization Scheduling applied to multimode heat supply power plant, it is characterised in that the described method comprises the following steps：
Outside each heating system reclaimed water and pressure value, the temperature of steam are neutralized for each Steam Turbine therrmodynamic system of multi collect
The step of Active Power of angle value, flow value and generator, motor and transformer；
For according to each Steam Turbine and outside each heating system multi collect to data calculate each steam turbine respectively
The step of pressure mean values of group and outside each heating system, temperature averages, flow average value and electrical power mean values；
For correcting each Steam Turbine and the outside each pressure mean values of heating system, temperature averages, flow average value
And electrical power mean values, obtain the step of revised pressure mean values, temperature averages, flow average value and electrical power mean values
Suddenly；
For being pre-processed to the pressure mean values of revised each Steam Turbine and outside each heating system, obtain pre-
The step of pressure value of each Steam Turbine and outside each heating system after processing；
For calculating each steam turbine respectively according to pressure value, revised temperature value, flow value and electrical power value after pretreatment
The step of heat consumption rate of group and outside each heating system；
For on the basis of dispatching of power netwoks instruction and heat user requirement command is met, more each Steam Turbine and outside each to supply
The heat consumption rate of hot systems, it is optimal heat supply that the small carry out heat supply of heat consumption rate is selected in Steam Turbine and outside each heating system
Mode, by optimal heat-supplying mode be sent to the method for operation scheduling output module (3) the step of；
The step of for realizing heat supply using the small unit of heat consumption rate or outside heating system.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006783A (en) * | 2017-12-18 | 2018-05-08 | 新智能源***控制有限责任公司 | A kind of distributed energy cogeneration of heat and power control system and method |
| CN108985544A (en) * | 2018-05-28 | 2018-12-11 | 北京华远意通热力科技股份有限公司 | A kind of heating system Energy Efficiency Analysis output method and device |
| CN109685310A (en) * | 2018-11-16 | 2019-04-26 | 江阴利港发电股份有限公司 | A method of the heat supply sacurity dispatching based on N-1 principle |
| CN109785185A (en) * | 2019-01-09 | 2019-05-21 | 清华大学 | The level of factory complex energy management system of more grade heat supplies is dispatched in steam power plant |
| CN110197321A (en) * | 2019-04-17 | 2019-09-03 | 无锡利信能源科技有限公司 | A method of based on the collaboration heat supply safety economy scheduling of multicomputer heating unit |
| CN110568357A (en) * | 2019-09-10 | 2019-12-13 | 国网黑龙江省电力有限公司电力科学研究院 | nuclear power unit electric output monitoring and diagnosing system |
| CN112069677A (en) * | 2020-09-03 | 2020-12-11 | 润电能源科学技术有限公司 | Method, device and equipment for determining running mode of cold end circulating pump of power plant and storage medium |
| CN112146156A (en) * | 2020-09-07 | 2020-12-29 | 华北电力大学 | Multi-mode flexible operation method and system for power plant with electric boiler |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108006783A (en) * | 2017-12-18 | 2018-05-08 | 新智能源***控制有限责任公司 | A kind of distributed energy cogeneration of heat and power control system and method |
| CN108006783B (en) * | 2017-12-18 | 2020-04-21 | 新智能源***控制有限责任公司 | Distributed energy cogeneration control system and method |
| CN108985544A (en) * | 2018-05-28 | 2018-12-11 | 北京华远意通热力科技股份有限公司 | A kind of heating system Energy Efficiency Analysis output method and device |
| CN109685310A (en) * | 2018-11-16 | 2019-04-26 | 江阴利港发电股份有限公司 | A method of the heat supply sacurity dispatching based on N-1 principle |
| CN109685310B (en) * | 2018-11-16 | 2020-09-08 | 江阴利港发电股份有限公司 | N-1 principle-based heat supply safety scheduling method |
| CN109785185A (en) * | 2019-01-09 | 2019-05-21 | 清华大学 | The level of factory complex energy management system of more grade heat supplies is dispatched in steam power plant |
| CN110197321A (en) * | 2019-04-17 | 2019-09-03 | 无锡利信能源科技有限公司 | A method of based on the collaboration heat supply safety economy scheduling of multicomputer heating unit |
| CN110568357A (en) * | 2019-09-10 | 2019-12-13 | 国网黑龙江省电力有限公司电力科学研究院 | nuclear power unit electric output monitoring and diagnosing system |
| CN112069677A (en) * | 2020-09-03 | 2020-12-11 | 润电能源科学技术有限公司 | Method, device and equipment for determining running mode of cold end circulating pump of power plant and storage medium |
| CN112146156A (en) * | 2020-09-07 | 2020-12-29 | 华北电力大学 | Multi-mode flexible operation method and system for power plant with electric boiler |
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