CN105224735B - Generating set energy efficiency analysis method for air - Google Patents
Generating set energy efficiency analysis method for air Download PDFInfo
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- 238000004458 analytical method Methods 0.000 title claims abstract description 38
- 238000013461 design Methods 0.000 claims abstract description 105
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000004364 calculation method Methods 0.000 claims abstract description 29
- 230000007613 environmental effect Effects 0.000 claims abstract description 16
- 238000010248 power generation Methods 0.000 claims abstract description 14
- 238000011056 performance test Methods 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 5
- 239000003245 coal Substances 0.000 claims description 185
- 238000000605 extraction Methods 0.000 claims description 97
- 239000007789 gas Substances 0.000 claims description 55
- 239000007787 solid Substances 0.000 claims description 27
- 238000002485 combustion reaction Methods 0.000 claims description 26
- 230000002209 hydrophobic effect Effects 0.000 claims description 20
- 210000003296 saliva Anatomy 0.000 claims description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 18
- 239000003546 flue gas Substances 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000013598 vector Substances 0.000 claims description 11
- 208000011580 syndromic disease Diseases 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 239000002956 ash Substances 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 206010009866 Cold sweat Diseases 0.000 claims 1
- 238000002474 experimental method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 20
- 230000006870 function Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 238000001816 cooling Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
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- 238000006243 chemical reaction Methods 0.000 description 5
- 238000013210 evaluation model Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000010977 unit operation Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
Abstract
The present invention provides a kind of motor group energy efficiency analysis method for air, comprising: obtains the target value and actual value of generator 's parameter, unit performance；According to the practical Coal-fired capacity of boiler in generator 's parameter, current environmental temperature, Steam Turbine circulating water temperature, Steam Turbine heat supply power generation are compared, the generated energy of Steam Turbine calculates external condition deviation；Under multiple operating conditions, respectively by boiler performance test, Steam Turbine Performance test and station service power consumption rate test performance experiment calculation boiler efficiency deviation, Steam Turbine efficiency variation and station service power consumption rate deviation, and equipment performance deviation is calculated according to the boiler efficiency deviation, Steam Turbine efficiency variation and station service power consumption rate deviation；Value should be reached according in the generating set design parameter, the external condition deviation and equipment performance deviation computer group actual motion；The difference that should reach value and the target value and actual value is calculated separately, according to the default weight and corresponding membership function calculating generating set efficiency of two kinds of differences.
Description
Technical field
The present invention relates to Thermal generation unit Energy Efficiency Analysis technology more particularly to a kind of generating set energy efficiency analysis method for air.
Background technique
Demand with society to electric power is higher and higher, and the efficiency for how improving generating set becomes current people's concern
The problem of.
For the angle of energy conversion, the efficient energy conversion η of generating setEFor each process such as boiler, steam turbine it
Product, as following formula indicates:
ηE=ηB·ηP·ηT·(1-WS/WG)
Wherein, ηBFor boiler thermal efficiency, ηPFor pipeline efficiency, ηTFor steam turbine efficiency, WSFor from power consumption, WGFor generated energy.
Ordinary practice indicates the efficient energy conversion η of coal fired power plant with net coal consumption rate bE, both sides relation are as follows:
Unit efficiency level is according to efficient energy conversion ηEIt indicates, numerical value is the bigger the better；With using net coal consumption rate b come table
Show, then numerical value is the smaller the better.
In order to analyze energy consumption variation, in the prior art, usually counting in a certain period, the mark consumption of coal amount of coal fired power plant
BbWith outer power supply volume Wg, net coal consumption rate is calculated accordingly:
In the above method, due to efficient energy conversion ηEOr the information content of net coal consumption rate b itself is too small, what can not be analyzed
The efficiency offset issue that reason generates, can not solve the efficiency evaluation fairness problem under different working conditions.
Summary of the invention
The present invention provides a kind of generating set energy efficiency analysis method for air, with accurate analyzing generator group efficiency.
To achieve the goals above, the embodiment of the invention provides a kind of motor group energy efficiency analysis method for air, the motor group energy
Imitating analysis method includes:
Obtain includes generating set design parameter, the practical Coal-fired capacity of boiler, current environmental temperature, Steam Turbine circulating water temperature
Degree, rate of load condensate, the target value and actual value of Steam Turbine heat supply power generation ratio, the generated energy of Steam Turbine, unit performance；
According to the practical Coal-fired capacity of the boiler, current environmental temperature, Steam Turbine circulating water temperature, Steam Turbine heat supply hair
The generated energy calculating external condition deviation of electricity ratio, Steam Turbine, the external condition deviation is coal quality deviation, ambient temperature deviation
And the sum of extraction for heat supply deviation three；
Under multiple operating conditions, pass through boiler performance test, Steam Turbine Performance test and station service power consumption rate test performance respectively
Experiment calculation boiler efficiency deviation, Steam Turbine efficiency variation and station service power consumption rate deviation, and according to the boiler efficiency deviation, vapour
It takes turns unit efficiency variation and station service power consumption rate deviation calculates equipment performance deviation；
According to the generating set design parameter, the external condition deviation and the practical fortune of equipment performance deviation computer group
Value should be reached in row；
Calculate separately it is described should up to the difference of value and the target value and actual value, according to two kinds of differences default weight and
Corresponding membership function calculates generating set efficiency.
In one embodiment, according to the practical Coal-fired capacity of the boiler, current environmental temperature, Steam Turbine circulating water temperature, vapour
Take turns unit heat supply power generation ratio, the generated energy of Steam Turbine calculates external condition deviation, comprising:
The practical Coal-fired capacity of boiler is measured, judges whether the deviation of design coal Coal-fired capacity and the practical Coal-fired capacity of the boiler is big
In predetermined deviation value；
If the deviation of design coal Coal-fired capacity and the practical Coal-fired capacity of the boiler is greater than predetermined deviation value, according to formulaCalculate the variation delta q of boiler solid incomplete combustion loss4；
Furnace coal weight is calculated according to the difference of generated energy and the practical Coal-fired capacity of the boiler and design coal Coal-fired capacity to increase
Caused station service power consumption rate incrementss Δ λΔB；
Judge whether as-fired coal moisture is more than pre-set moisture value；
If as-fired coal moisture is more than pre-set moisture value, according to exhaust gas temperature deviation delta θLvCalculate heat loss due to exhaust gas variable quantity
Δq2；
According to the variation delta q of the boiler solid incomplete combustion loss4, heat loss due to exhaust gas variation delta q2, station service
Rate incrementss Δ λΔBCalculate coal consumption variation delta b caused by coal varitation；
Wherein, CfhFor the unburned combustible in fly ash of practical as-fired coal, %；AarFor the ash content of practical as-fired coal, %；Qar,net
For practical as-fired coal net calorific value as received basis, kJ/kg；q4For boiler solid incomplete combustion loss design value, %.
In one embodiment, according to the practical Coal-fired capacity of the boiler, current environmental temperature, Steam Turbine circulating water temperature, vapour
Take turns unit heat supply power generation ratio, the generated energy of Steam Turbine calculates external condition deviation, comprising:
At set environment temperature T, air preheater entrance wind-warm syndrome and air preheater entrance flue gas temperature, and root are obtained
Exhaust gas temperature is calculated according to the air preheater entrance wind-warm syndrome and air preheater entrance flue gas temperature
According to the exhaust gas temperatureCalculate the variation delta q of boiler exhaust heat loss2；
Influence based on environment temperature to back pressure obtains turbine back pressure；
LP Turbine Exhaust Pressure Correction Curves are searched according to the turbine back pressure, obtain the practical heat under the turbine back pressure
Consume HRWith design heat consumption HRTHADifference DELTA HR；
According to the variation delta q of boiler exhaust heat loss2And the difference DELTA HREnvironment temperature is calculated to the shadow of unit coal consumption
Ring total amount Δ T.
In one embodiment, according to the practical Coal-fired capacity of the boiler, current environmental temperature, Steam Turbine circulating water temperature, vapour
Take turns unit heat supply power generation ratio, the generated energy of Steam Turbine calculates external condition deviation, comprising:
Obtain the steam extraction enthalpy of the heaters at different levels under n load condition of Steam Turbine, go out saliva enthalpy, export hydrophobic enthalpy with
And the extraction for heat supply amount of heaters at different levels；Wherein, n is more than or equal to 3；
Determine the q of j-th stage heater under each load conditionj、τjAnd γj；Wherein, qjIt is 1 kilogram of heating steam in j-th stage
Thermal discharge in heater；τjFor enthalpy liter of the 1 kilogram of water in j-th stage heater；γjIt is hydrophobic in j-th stage heater for 1 kilogram
In thermal discharge；
According to the q of j-th stage heater under each load conditionj、τjAnd γj, calculate j-th stage under each load condition and heat
The equivalent enthalpy drop and steam extraction efficiency of device；
The relation information being fitted according to cubic polynomial between the steam extraction efficiency and Steam Turbine load of j-th stage heater；
The actual load of Steam Turbine is obtained, and according to the actual load and the corresponding cubic polynomial of relation information,
Calculate the practical steam extraction efficiency of the j-th stage heater under the actual load；
The generated energy of Steam Turbine is obtained, and according to the extraction for heat supply amount of j-th stage heater, the reality of j-th stage heater
The generated energy of steam extraction efficiency and the Steam Turbine calculates influence amount of the extraction for heat supply to Steam Turbine heat consumption of j-th stage heater
ΔHj；
By the extraction for heat supply of heaters at different levels to the influence amount Δ H of Steam Turbine heat consumptionjSuperposition determines that extracted steam from turbine supplies
Influence total amount Δ H of the heat to Steam Turbine heat consumption.
In one embodiment, if the deviation of design coal Coal-fired capacity and the practical Coal-fired capacity of the boiler is not more than predetermined deviation
Value, enables the variation delta q of the boiler solid incomplete combustion loss4And station service power consumption rate incrementss Δ λΔBIt is zero.
In one embodiment, if as-fired coal moisture is no more than pre-set moisture value, the heat loss due to exhaust gas variation delta q is enabled2
It is zero.
In one embodiment, according to the difference of generated energy and the practical Coal-fired capacity of the boiler and design coal Coal-fired capacity calculate into
Station service power consumption rate incrementss Δ λ caused by furnace coal amount increasesΔB, comprising:
Bring the difference of generated energy and the practical Coal-fired capacity of the boiler and design coal Coal-fired capacity into formula
Calculate station service power consumption rate incrementss Δ λ caused by furnace coal weight increasesΔB, wherein Δ B is the practical Coal-fired capacity of boiler and design coal
The difference of Coal-fired capacity；WfFor generated energy.
In one embodiment, according to exhaust gas temperature deviation delta θLvCalculate heat loss due to exhaust gas variation delta q2, comprising: by smoke evacuation temperature
Spend deviation delta θLvBring Δ q into2=0.0035 Δ θLv, calculate heat loss due to exhaust gas variation delta q2, wherein Δ θLv=0.7 Δ Mar, Δ
MarIncrement for practical as-fired coal kind moisture relative to design coal moisture.
In one embodiment, according to the variation delta q of the boiler solid incomplete combustion loss4, heat loss due to exhaust gas variation
Measure Δ q2, station service power consumption rate incrementss Δ λΔBCalculate coal consumption variation delta b caused by coal varitation, comprising: by the boiler solid
The variable quantity of incomplete combustion loss, heat loss due to exhaust gas variable quantity, station service power consumption rate incrementss bring formula intoIn, calculate coal consumption variation delta b caused by coal varitation, wherein bstFor unit design coal
Consumption, ηBFor boiler efficiency design value, electromechanical consumption design value supplemented by λ.
In one embodiment, boiler is calculated according to the air preheater entrance wind-warm syndrome and air preheater entrance flue gas temperature
Exhaust gas temperatureInclude:
It brings the air preheater entering air temperature and air preheater entrance flue gas temperature into following formula, calculates
The exhaust gas temperature
Wherein, θEnFor air preheater entrance flue gas temperature, θLvFor air preheater outlet flue-gas temperature, tEnAir is pre-
Hot device entering air temperature.
In one embodiment, according to the exhaust gas temperatureCalculate the variation delta q of boiler exhaust heat loss2, comprising:
By the exhaust gas temperatureIt brings following formula into, calculates the variation delta q of the boiler exhaust heat loss2:
Wherein, q2For the boiler exhaust heat loss design value under the set environment temperature T.
In one embodiment, when the steam turbine is air cooling unit, the influence based on environment temperature to back pressure obtains steamer
Machine back pressure, comprising: according to environment temperature to the influence curve of back pressure, obtain the turbine back pressure under current environmental temperature.
In one embodiment, when the steam turbine is wet type cooling unit, the influence based on environment temperature to back pressure obtains steamer
Machine back pressure, comprising:
Condenser, which is calculated, according to the design data under load condition exports the temperature difference；
According to Inlet Temperature of Circulating Water and the practical exhaust temperature of the differential thermal calculation；
Water vapor pressure property list is searched according to the practical exhaust temperature, obtains the corresponding vapour of the practical exhaust temperature
Turbine back pressure.
In one embodiment, condenser is calculated according to the design data under load condition and exports the temperature difference, comprising:
Water vapor pressure property list is searched according to setting back pressure value, obtain the exhaust temperature under the setting back pressure value and is coagulated
Vapour device inflow temperature；
The condenser, which is calculated, according to the exhaust temperature and condenser inflow temperature exports the temperature difference.
In one embodiment, according to the variation delta q of boiler exhaust heat loss2And the difference DELTA HRCalculate environment temperature pair
The influence total amount Δ T of unit coal consumption, comprising:
By the variation delta q according to boiler exhaust heat loss2And the difference DELTA HRIt brings following formula into, calculates ring
Influence total amount Δ T of the border temperature to unit coal consumption:
Wherein, bstFor unit design coal consumption, g/kWh；ηBFor the boiler efficiency at a temperature of design environment, %；HRDFor design
Thermal loss of steam turbine under environment temperature, kJ/kWh.
In one embodiment, the q of j-th stage heater under each load condition of determinationj、τjAnd γj, comprising:
Judge the type of the j-th stage heater；
If the type of the j-th stage heater is surface heater, the q of j-th stage heater is determined according to formula onej、τj
And γj；
The formula one are as follows:
Wherein, tjGo out saliva enthalpy for j-th stage heater；tj-1Go out saliva enthalpy for -1 grade of heater of jth；hjFor j-th stage
The steam extraction enthalpy of heater；tsjFor the hydrophobic enthalpy in outlet of j-th stage heater；
If the type of the j-th stage heater is collective-type heater, the q of j-th stage heater is determined according to formula twoj、τj
And γj；
The formula two are as follows:
Wherein, tjGo out saliva enthalpy for j-th stage heater；tj-1Go out saliva enthalpy for -1 grade of heater of jth；hjFor j-th stage
The steam extraction enthalpy of heater；ts(j+1)For the hydrophobic enthalpy in outlet of+1 grade of heater of jth.
In one embodiment, the q according to j-th stage heater under each load conditionj、τjAnd γj, calculate each load
The equivalent enthalpy drop of j-th stage heater and steam extraction efficiency under operating condition, comprising:
The equivalent enthalpy drop H of j-th stage heater under each load condition is calculated according to formula threejWith steam extraction efficiency etaj；
The formula three are as follows:
Wherein, hCFor condensing enthalpy；AiFor the τ of i-stage heateriOr γi；qiIt is 1 kilogram of heating steam in i-stage heater
In thermal discharge；HiFor the equivalent enthalpy drop of i-stage heater；Wherein, i=j-m, m >=1, and i >=1；τiIt is 1 kilogram of water i-th
Enthalpy liter in grade heater；γiFor 1 kilogram of hydrophobic thermal discharge in i-stage heater.
In one embodiment, if j-th stage heater is collective-type heater, AiFor τi；If j-th stage heater is surface-type
Heater, the then A of -1 grade of heater of jth to-m grades of heaters of jthiFor γi, the jth-m grades of heaters are collective-type heating
Device；- m-1 grades of heaters of jth to the 1st grade of heater AiFor τi。
In one embodiment, the steam extraction efficiency and Steam Turbine load that j-th stage heater is fitted according to cubic polynomial
Between relation information, comprising:
The steam extraction efficiency eta of j-th stage heater is fitted according to cubic polynomialjRelationship between Steam Turbine load x is bent
Line；The relation curve are as follows:
ηj=a1x3+a2x2+a3x+a4
Wherein, a1、a2、a3、a4For constant.
In one embodiment, the actual load for obtaining Steam Turbine, and according to the actual load and relation information pair
The cubic polynomial answered calculates the practical steam extraction efficiency of the j-th stage heater under the actual load, comprising:
The actual load x of Steam Turbine is obtained, and according to the actual load x and formula η of Steam Turbinej=a1x3+a2x2+
a3x+a4, calculate the practical steam extraction efficiency eta of the j-th stage heater under the actual load x of Steam Turbinej。
In one embodiment, the generated energy for obtaining Steam Turbine, and according to extraction for heat supply amount, the jth of j-th stage heater
The practical steam extraction efficiency of grade heater and the generated energy of the Steam Turbine calculate the extraction for heat supply of j-th stage heater to steam turbine
The influence amount Δ H of group heat consumptionj, comprising:
The generated energy for obtaining Steam Turbine is Wf；
According to formula:Calculate influence of the extraction for heat supply of j-th stage heater to Steam Turbine heat consumption
Measure Δ Hj；
Wherein, QjFor the extraction for heat supply amount of j-th stage heater；ηjFor the practical steam extraction efficiency of j-th stage heater.
In one embodiment, set according to the calculating of the boiler efficiency deviation, Steam Turbine efficiency variation and station service power consumption rate deviation
Standby aberrations in property, comprising:
The multiple work is calculated separately according to the boiler efficiency deviation, Steam Turbine efficiency variation and station service power consumption rate deviation
Net coal consumption rate deviation delta b' under condition；
According to the load point and net coal consumption rate deviation generating device performance curve under the multiple operating condition, in current loads
Under, equipment performance deviation is obtained according to the equipment performance curve.
In one embodiment, counted respectively according to the boiler efficiency deviation, Steam Turbine efficiency variation and station service power consumption rate deviation
Calculate the net coal consumption rate deviation delta b' under the multiple operating condition, comprising:
The boiler efficiency deviation, Steam Turbine efficiency variation and station service power consumption rate deviation is brought into following formula respectively to calculate
Net coal consumption rate deviation delta b' under the multiple operating condition:
Wherein, b is coal consumption design value, ηbFor boiler efficiency design value, Δ (ηb) it is boiler efficiency deviation, ηtbFor steam turbine
Group efficient design value, Δ (ηtb) it is Steam Turbine efficiency variation.
In one embodiment, according to the default weight and corresponding membership function calculating generating set efficiency of two kinds of differences, comprising:
Generating set efficiency R is calculated according to following formula:
Wherein, A is the default weight vectors of two kinds of deviations；Point
Not Wei unit coal consumption should reach value bsldWith unit coal consumption target value bobjDeviation delta bobjIt is under the jurisdiction of the first order being subordinate to level V
Degree；Respectively unit coal consumption should reach value bsldIt is practical with unit coal consumption
Value bactDeviation delta bactIt is under the jurisdiction of the degree of membership of the first order to level V.
In one embodiment, according to the default weight and corresponding membership function calculating generating set efficiency of two kinds of differences, comprising:
Generating set efficiency R is calculated according to following formula:
Wherein, A is the default weight vectors of two kinds of deviations；Point
Not Wei unit efficiency should reach value ηsldWith unit efficiency target value ηobjDeviation delta ηobjIt is under the jurisdiction of the first order being subordinate to level V
Degree；Respectively unit efficiency should reach value ηsldWith unit efficiency reality
Value ηactDeviation delta ηactIt is under the jurisdiction of the degree of membership of the first order to level V.
Using the present invention, influence total amount Δ H of the extracted steam from turbine heat supply to Steam Turbine heat consumption can be determined, consequently facilitating
Research to the final attainable efficiency level of generating set.Current extraction for heat supply not yet is solved to Steam Turbine heat consumption
The problem of calculation method of influence amount.
Using the present invention, influence of the variation of ambient temperature to Thermal generation unit coal consumption can be quantitatively calculated, it is accurate to calculate
External condition deviation, and then study generating set finally attainable efficiency level.
Using the present invention, influence of the coal quality deviation to Thermal generation unit coal consumption can be quantitatively calculated, it is accurate to calculate outside
Condition deviation, and then study generating set finally attainable efficiency level.
Influence, variation of ambient temperature by quantitative calculating extraction for heat supply to Steam Turbine heat consumption is to Thermal generation unit coal
Influence, equipment performance deviation and design value of the influence, coal quality deviation of consumption to Thermal generation unit coal consumption can be calculated quantitatively and be answered
It, can be accurate according to preset weight and corresponding membership function based on the deviation that should reach value and target value and design value up to value
Analyzing generator group efficiency.To determine that unit energy effect provides scientific and reasonable calculation basis up to value, to instruct unit operation pipe
Manage horizontal raising.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the motor group energy efficiency analysis method for air flow chart of the influence generating set efficiency of the embodiment of the present invention；
Fig. 2 is the calculation method schematic diagram that the coal quality deviation of the embodiment of the present invention influences Thermal generation unit coal consumption；
Fig. 3 is that the coal quality deviation of another embodiment of the present invention shows the calculation method process that Thermal generation unit coal consumption influences
It is intended to；
Fig. 4 is the calculation method flow chart that variation of ambient temperature of the embodiment of the present invention influences Thermal generation unit coal consumption；
Fig. 5 is influence curve schematic diagram of the environment temperature of the embodiment of the present invention to back pressure；
Fig. 6 is that influence of the embodiment of the present invention based on environment temperature to back pressure obtains the method flow diagram of turbine back pressure；
Fig. 7 is typical unit back pressuce fair curve schematic diagram；
Fig. 8 is a kind of calculation method of the extraction for heat supply provided in an embodiment of the present invention to the influence amount of Steam Turbine heat consumption
Flow chart one；
Fig. 9 is a kind of calculation method of the extraction for heat supply provided in an embodiment of the present invention to the influence amount of Steam Turbine heat consumption
Flowchart 2；
Figure 10 is the structural schematic diagram of the Steam Turbine with multiple stage heater in the embodiment of the present invention；
Figure 11 is Δ b in the embodiment of the present inventionobjTriangle and half trapezoidal evaluation model；
Figure 12 is Δ b in the embodiment of the present inventionactTriangle and half trapezoidal evaluation model.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
For the generating set determining for one, final attainable efficiency level depends on the factor of three aspects,
That is: this generating set designs and manufactures level；The application conditions of this generator unit；Pipe of the manager to generating set
Manage application level.Manager is the subjective factor of unit operation to the management application level of generating set, can be managed by operation
The improvement of reason is improved.The design and manufacture level and the application conditions of generator unit of generating set are unit operations
Objective factor.
Factor in terms of based on above three defines value relevant to economy as follows in the prior art:
(a) target value or optimal value: the peak performance value based on the design of identical steam design parameter can for ideal value or
Optimal value, it is best that optimal value represents same type units design, and management level height its performance is performed to it is best；
(b) design value: the efficiency of certain unit design to be evaluated is horizontal；
(c) actual value: the efficiency that certain unit to be evaluated actually reaches is horizontal；
(d) value should be reached: refers to unit in actual operation, in a certain objective condition (such as temperature, circulating water temperature not able person
For under the objective condition of change) under and a certain operating condition (such as rate of load condensate), a certain heat supply power generation ratio under the conditions of in Optimum operating control
The optimum value that should theoretically reach is run under mode.
It should be up to value on the basis of Energy design value, by the influence of remover apparatus aberrations in property and objective condition deviation come really
It is fixed.Equipment performance deviation refers to that unit performance, with the difference of design value, integrates the design for embodying equipment, system under design condition
It makes and installation is horizontal, if facilities and equipments are not transformed, equipment performance deviation cannot be changed.Objective condition deviation refers to that unit is run
Deviation caused by locating objective condition and design condition is inconsistent, geographical location, gas locating for so-called objective condition, that is, unit
The service condition not being affected by human factors as condition, network load limitation etc..Design value deducts equipment performance deviation and objective
Efficiency deviation caused by condition deviation is that the unit should reach value, it may be assumed that
Value=design value ± equipment performance deviation ± external condition deviation should be reached
External condition deviation effects mainly consider the factor of three aspects: practical common coal quality deviates machine caused by designing coal quality
Group efficiency deviation, actual ambient temperature deviates unit efficiency deviation caused by design environment temperature and the practical power output of unit is inclined
From efficiency deviation caused by nominal output, the external condition deviation i.e. adduction of this three parts efficiency deviation.
The present invention is based on the deviation that should reach value and target value and design value, according to preset weight and corresponding it is subordinate to letter
Number, can accurate analyzing generator group efficiency.
The embodiment of the invention provides a kind of generating set energy efficiency analysis method for air, as shown in Figure 1, the generating set efficiency point
Analysis method includes:
S101: it obtains and is followed comprising generating set design parameter, the practical Coal-fired capacity of boiler, current environmental temperature, Steam Turbine
Ring coolant-temperature gage, rate of load condensate, Steam Turbine heat supply power generation ratio, the generator 's parameter of generated energy of Steam Turbine, unit performance
Target value and actual value；
S102: according to the practical Coal-fired capacity of the boiler, current environmental temperature, Steam Turbine circulating water temperature, Steam Turbine
The generated energy calculating external condition deviation of heat supply power generation ratio, Steam Turbine, the external condition deviation is coal quality deviation, environment temperature
Spend the sum of deviation and extraction for heat supply deviation three；
S103: under multiple operating conditions, pass through boiler performance test, Steam Turbine Performance test and station service power consumption rate test respectively
Performance test calculates boiler efficiency deviation, Steam Turbine efficiency variation and station service power consumption rate deviation, and inclined according to the boiler efficiency
Difference, Steam Turbine efficiency variation and station service power consumption rate deviation calculate equipment performance deviation；
S104: according to the generating set design parameter, the external condition deviation and equipment performance deviation computer group
Value should be reached in actual motion；
S105: calculate separately it is described should be up to the difference of value and the target value and actual value, according to presetting for two kinds of differences
Weight and corresponding membership function calculate generating set efficiency.
Process as shown in Figure 1 is it is found that the present invention calculates separately coal quality deviation, ambient temperature deviation, extraction for heat supply deviation
And equipment performance deviation, can calculate should reach value under arbitrary load, according to the target value and reality that should reach value, unit performance
Value, can be with quantitative analysis generating set efficiency.
The practical Coal-fired capacity of boiler in S101, current environmental temperature, Steam Turbine circulating water temperature, rate of load condensate, steam turbine
Group heat supply power generation ratio, Steam Turbine generated energy generator 's parameter, need the parameter used to calculate external condition deviation,
External condition deviation is made of coal quality deviation, ambient temperature deviation and extraction for heat supply deviation three, is calculating coal quality deviation, environment
When temperature deviation and extraction for heat supply deviation one of them, needs to use the one or more of above-mentioned generator 's parameter, divide below
It is not described as follows and calculates coal quality deviation, ambient temperature deviation and extraction for heat supply deviation, actual value is similar or same duty generator
The unit performance average value of predetermined rank in group.Predetermined rank can for example take similar or with unit performance in duty generator group
10% before ranking.
Fig. 2 is the flow chart of coal quality deviation calculation method in the embodiment of the present invention, as shown in Fig. 2, the calculating of coal quality deviation
Method includes:
S201: the measurement practical Coal-fired capacity of boiler judges the deviation of design coal Coal-fired capacity and the practical Coal-fired capacity of the boiler
Whether predetermined deviation value is greater than；
S202: if the deviation of design coal Coal-fired capacity and the practical Coal-fired capacity of the boiler is greater than predetermined deviation value, according to
Following formula calculates the variation delta q of boiler solid incomplete combustion loss4:
S203: furnace coal weight is calculated according to the difference of generated energy and the practical Coal-fired capacity of the boiler and design coal Coal-fired capacity
Station service power consumption rate incrementss Δ λ caused by increasingΔB；
S204: judge whether as-fired coal moisture is more than pre-set moisture value；
S205: if as-fired coal moisture is more than pre-set moisture value, according to exhaust gas temperature deviation delta θLvCalculate heat loss due to exhaust gas
Variation delta q2；
S206: according to the variable quantity of the boiler solid incomplete combustion loss, heat loss due to exhaust gas variable quantity, station service power consumption rate
Incrementss calculate coal consumption variation delta b caused by coal varitation.
In formula 1, CfhFor the unburned combustible in fly ash of practical as-fired coal, %；AarFor the ash content of practical as-fired coal, %；
Qar,netFor practical as-fired coal net calorific value as received basis, kJ/kg；q4For boiler solid incomplete combustion loss design value, %.
Process as shown in Figure 2 is it is found that the present invention calculates separately the variable quantity of boiler solid incomplete combustion loss, smoke evacuation
Then heat loss variable quantity and station service power consumption rate incrementss utilize the variable quantity of boiler solid incomplete combustion loss, exhaust gas heat loss
It loses variable quantity and station service power consumption rate incrementss calculates coal consumption variable quantity caused by coal varitation, quantitatively calculate coal quality deviation to fire coal
The influence of generating set coal consumption provides data for the accurate external condition deviation that calculates.
Fig. 3 is the calculation method process that the coal quality deviation of another embodiment of the present invention influences Thermal generation unit coal consumption
Figure, below with reference to Fig. 2 and Fig. 3, the present invention will be described in detail.
Design coal is coal-fired when the influence of calculating coal quality should be based on the practical Coal-fired capacity of boiler and calorific value minimum check coal
Deviation between amount.Practical as-fired coal matter deviates designing coal quality, and the main economy for influencing boiler shows endless to boiler solid
Full combustible loss design value (q4) influence and influence to heat loss due to exhaust gas.
If judging that the deviation of design coal Coal-fired capacity and the practical Coal-fired capacity of boiler is greater than predetermined deviation value by S201, need
The variation delta q of boiler solid incomplete combustion loss is calculated by above-mentioned formula4.It also needs by according to generated energy and institute
The difference for stating the practical Coal-fired capacity of boiler and design coal Coal-fired capacity calculates station service power consumption rate incrementss Δ caused by furnace coal weight increases
λΔB.Specifically, station service power consumption rate incrementss Δ λ is calculated by following formulaΔB:
In formula 2, Δ B is the difference of boiler practical Coal-fired capacity and design coal Coal-fired capacity, t/h；WfFor generated energy, kW.
Bring the difference of generated energy and the practical Coal-fired capacity of the boiler and design coal Coal-fired capacity into formula 2, so that it may count
Calculate station service power consumption rate incrementss Δ λ caused by furnace coal weight increasesΔB。
In one preferred embodiment, predetermined deviation value can be 10%, and invention is not limited thereto.
If S204 judges that as-fired coal moisture is more than pre-set moisture value, need according to exhaust gas temperature deviation delta θLvCalculate smoke evacuation
Heat loss variation delta q2, in particular it is required that bringing exhaust gas temperature deviation into following formula, calculate heat loss due to exhaust gas variation delta
q2:
Δq2=0.0035 Δ θLv (3)
In formula 3, Δ θLvFor exhaust gas temperature deviation.
ΔθLvFor the exhaust gas temperature variable quantity of estimation, such as according to moisture is every increase by 1 percentage point, Δ θLvIncrease by 0.7 DEG C
It calculates, that is, Δ θLv=0.7 Δ Mar, Δ MarIncrement for practical as-fired coal kind moisture relative to design coal moisture, unit %.
In one preferred embodiment, pre-set moisture value can be 20%, and invention is not limited thereto.
According to the exhaust gas heat loss calculated in the variable quantity of the boiler solid incomplete combustion loss calculated in formula 1, formula 3
The station service power consumption rate incrementss calculated in variable quantity and formula 2 are lost, coal consumption variation delta b caused by coal varitation can be calculated, are had
Body, it needs the variable quantity, heat loss due to exhaust gas variable quantity, station service power consumption rate incrementss of the boiler solid incomplete combustion loss
It brings into and calculates coal consumption variation delta b caused by coal varitation in following formula.
In formula 4, bstFor unit design coal consumption, g/kWh；ηBFor boiler efficiency design value, %；Electromechanical consumption design supplemented by λ
Value, %.
In formula 4, Δ q4+Δq2It can be indicated with following formula:
ΔηB=Δ q4+Δq2 (5)
ΔηBCause boiler efficiency variable quantity for coal varitation.
In one embodiment, as shown in Fig. 2, when judge the inclined of design coal Coal-fired capacity and the practical Coal-fired capacity of boiler by S201
Difference is less than or equal to predetermined deviation value, needs not move through the S202 and S203 of Fig. 1, i.e., without calculating boiler by formula 2 and formula 3
The variation delta q of solid incomplete combustion loss4And station service power consumption rate incrementss Δ λΔB, boiler solid imperfect combustion is directly enabled to damage
The variation delta q of mistake4And station service power consumption rate incrementss Δ λΔBIt is zero, then carries out S204.
In one embodiment, as shown in Fig. 2, being needed not move through when S204 judges that as-fired coal moisture is no more than pre-set moisture value
S205, i.e., without calculating heat loss due to exhaust gas variation delta q by formula 32, it is only necessary to enable heat loss due to exhaust gas variation delta q2It is zero.
As can be seen from the above description, when calculating coal consumption variation delta b caused by coal varitation in formula 4, it can be only pot
The variation delta q of furnace solid incomplete combustion loss4And station service power consumption rate incrementss Δ λΔBIt is zero, heat loss due to exhaust gas variation delta q2
It is calculated by formula 3；It is also possible to only heat loss due to exhaust gas variation delta q2It is zero, the variation of boiler solid incomplete combustion loss
Measure Δ q4And station service power consumption rate incrementss Δ λΔBIt is calculated respectively by formula 1 and formula 2；It can also be boiler solid imperfect combustion
The variation delta q of loss4, station service power consumption rate incrementss Δ λΔBAnd heat loss due to exhaust gas variation delta q2It is zero or boiler solid
The variation delta q of incomplete combustion loss4, station service power consumption rate incrementss Δ λΔBAnd heat loss due to exhaust gas variation delta q2It is not to be
Zero, it is calculated separately by formula 1, formula 2 and formula 3.
Using coal quality deviation calculation method of the invention, coal quality deviation can be quantitatively calculated to Thermal generation unit coal consumption
It influences, it is accurate to calculate external condition deviation, and then study generating set finally attainable efficiency level.
Fig. 4 is the calculation method process that the variation of ambient temperature of the embodiment of the present invention influences Thermal generation unit coal consumption
Figure, as shown in figure 4, the calculation method includes the following steps:
S401: at set environment temperature T, air preheater entrance wind-warm syndrome and air preheater inlet flue gas temperature are obtained
Degree, and exhaust gas temperature is calculated according to the air preheater entrance wind-warm syndrome and air preheater entrance flue gas temperature
S403: according to the exhaust gas temperatureCalculate the variation delta q of boiler exhaust heat loss2；
S403: the influence based on environment temperature to back pressure obtains turbine back pressure；
S404: LP Turbine Exhaust Pressure Correction Curves are searched according to the turbine back pressure, are obtained under the turbine back pressure
Practical heat consumption HRWith design heat consumption HRTHADifference DELTA HR；
S405: according to the variation delta q of boiler exhaust heat loss2And the difference DELTA HREnvironment temperature is calculated to unit coal
The influence total amount Δ T of consumption.
Process as shown in Figure 4 it is found that when variation of ambient temperature need while considering variation of ambient temperature to boiler efficiency
With the influence of turbine efficiency.The present invention calculates the variable quantity and thermal loss of steam turbine difference of boiler exhaust heat loss first, then
Influence total amount of the environment temperature to unit coal consumption is calculated according to the variable quantity of boiler exhaust heat loss and thermal loss of steam turbine difference, is led to
This method is crossed, influence of the calculating variation of ambient temperature that can be quantified to Thermal generation unit coal consumption.
Influence of the variation of ambient temperature to boiler efficiency is mainly reflected in its influence to boiler exhaust heat loss.It calculates
Influence of the variation of ambient temperature to heat loss due to exhaust gas, it is necessary first to according to air preheater entering air temperature and air preheater
Entrance flue gas temperature, to calculate exhaust gas temperature when environment temperature TSpecific formula for calculation is as follows:
Bring the parameters such as air preheater entering air temperature and air preheater entrance flue gas temperature into above-mentioned formula
(6), so that it may calculate exhaust gas temperature
In formula (6), θEnFor air preheater entrance flue gas temperature, θLvFor air preheater outlet flue-gas temperature, tEnIt is empty
Air preheater entering air temperature.
During the present invention implements, it is assumed that environment temperature T is 25 DEG C, and formula (6) translates into following formula:
Exhaust gas temperature when using TThe variation delta q of boiler exhaust heat loss can be calculated2, specifically,
By exhaust gas temperatureIt brings following formula into, calculates the variation delta q of the boiler exhaust heat loss2:
In formula (8), q2For the boiler exhaust heat loss design value under set environment temperature T.
Steam turbine is divided into wet type cooling unit and air cooling unit, and in step S403, the influence based on environment temperature to back pressure is obtained
The method of turbine back pressure, wet type cooling unit and air cooling unit are different, need to calculate separately.
For air cooling unit, step S403 can be directly according to environment temperature to the influence curve of back pressure, and front ring is worked as in acquisition
Turbine back pressure at a temperature of border, environment temperature are as shown in Figure 5 to the influence curve of back pressure.
It, also should be based on environment temperature to the influence curve of back pressure for wet type cooling unit.Curve needs are designed according to producer
Based on parameter, carries out Correlation method for data processing and obtain.As shown in fig. 6, step S403 is when it is implemented, include the following steps:
S601: condenser is calculated according to the design data under load condition and exports the temperature difference.
In particular it is required that searching water vapor pressure property list according to setting back pressure value, obtain under the setting back pressure value
Exhaust temperature and condenser inflow temperature；Then the condenser is calculated according to the exhaust temperature and condenser inflow temperature to go out
The mouth temperature difference.
For example, inquiry water vapor pressure property list is known under the back pressure if certain unit design back pressure is 5.88kPa
Exhaust temperature is 31.8 DEG C, and condenser inflow temperature is 24 DEG C under design condition, then the condenser outlet temperature difference is 7.8 DEG C.It should
The temperature difference is to guarantee the required temperature difference of heat-transfer temperature difference of condensor, can be changed with the size of circulating water flow, but in condensing
Under conditions of device heating surface is constant, big degree of convergence, which reduces the temperature difference, can pay higher cost, therefore think that condenser exports in calculating
The temperature difference is design value, is remained unchanged.
S602: according to Inlet Temperature of Circulating Water and the practical exhaust temperature of the differential thermal calculation.Practical exhaust temperature is practical
The sum of circulating water temperature and the condenser outlet temperature difference.
S603: water vapor pressure property list is searched according to the practical exhaust temperature, obtains the practical exhaust temperature pair
The turbine back pressure answered.
For S404, every unit requires the back pressure fair curve of oneself, and typical unit back pressuce fair curve is as follows
Shown in Fig. 7.
In S405, need to calculate influence total amount Δ T of the environment temperature to unit coal consumption according to following formula.
In particular it is required that by the variation delta q of boiler exhaust heat loss2And difference DELTA HRIt brings into formula (9), calculates environment
Influence total amount Δ T of the temperature to unit coal consumption.
In formula (9), bstFor unit design coal consumption, g/kWh；ηBFor the boiler efficiency at a temperature of design environment, %；HRDFor
Thermal loss of steam turbine at a temperature of design environment, kJ/kWh.
The calculation method influenced using variation of ambient temperature of the invention on Thermal generation unit coal consumption can be calculated quantitatively
Influence of the variation of ambient temperature to Thermal generation unit coal consumption, it is accurate to calculate external condition deviation, and then study generating set most
Attainable efficiency is horizontal eventually.
Fig. 8 is calculation method flow chart of the extraction for heat supply to the influence amount of Steam Turbine heat consumption of inventive embodiments, such as Fig. 1
Shown, which includes:
Step 801, obtain Steam Turbine n load condition under heaters at different levels steam extraction enthalpy, go out saliva enthalpy, export
The extraction for heat supply amount of hydrophobic enthalpy and heater at different levels.
Wherein, n is more than or equal to 3, i.e., needs to obtain the heating at different levels under at least three load condition in embodiments of the present invention
The steam extraction enthalpy of device, the extraction for heat supply amount for going out saliva enthalpy, exporting hydrophobic enthalpy and heater at different levels.
Step 802, the q for determining j-th stage heater under each load conditionj、τjAnd γj。
Wherein, qjThermal discharge of the steam in j-th stage heater is heated for 1 kilogram；τjIt is 1 kilogram of water in j-th stage heater
In enthalpy liter；γjFor 1 kilogram of hydrophobic thermal discharge in j-th stage heater.
Step 803, according to the q of j-th stage heater under each load conditionj、τjAnd γj, calculate j-th stage under each load condition
The equivalent enthalpy drop and steam extraction efficiency of heater.
Step 804, the pass being fitted according to cubic polynomial between the steam extraction efficiency and Steam Turbine load of j-th stage heater
It is information.
Step 805, the actual load for obtaining Steam Turbine, and it is corresponding multinomial three times according to actual load and relation information
Formula calculates the practical steam extraction efficiency of the j-th stage heater under the actual load.
Step 806, the generated energy for obtaining Steam Turbine, and heated according to the extraction for heat supply amount of j-th stage heater, j-th stage
The practical steam extraction efficiency of device and the generated energy of Steam Turbine calculate shadow of the extraction for heat supply to Steam Turbine heat consumption of j-th stage heater
Ring amount Δ Hj。
Step 807, by the extraction for heat supply of heaters at different levels to the influence amount Δ H of Steam Turbine heat consumptionjSuperposition, determines steamer
Influence total amount Δ H of the machine extraction for heat supply to Steam Turbine heat consumption.
A kind of extraction for heat supply provided in an embodiment of the present invention, can be true to the calculation method of the influence amount of Steam Turbine heat consumption
Influence total amount Δ H of the extracted steam from turbine heat supply to Steam Turbine heat consumption is determined, consequently facilitating to the final attainable energy of generating set
Imitate horizontal research.Solve the problems, such as current calculation method of the extraction for heat supply to the influence amount of Steam Turbine heat consumption not yet.
In order to make those skilled in the art be better understood by the present invention, a more detailed embodiment is set forth below,
As shown in figure 9, the embodiment of the present invention provides a kind of extraction for heat supply to the calculation method of the influence amount of Steam Turbine heat consumption, it is applied to
Steam Turbine with multiple stage heater as shown in Figure 10, this have the Steam Turbine of multiple stage heater include steam turbine 21,
Boiler 22, the 1st grade of heater 23, the 2nd grade of heater 24,3rd level heater 25 etc..The extraction for heat supply is to Steam Turbine heat consumption
The calculation method of influence amount, comprising:
Step 901, obtain Steam Turbine n load condition under heaters at different levels steam extraction enthalpy, go out saliva enthalpy, export
The extraction for heat supply amount of hydrophobic enthalpy and heater at different levels.
Wherein, n is more than or equal to 3, i.e., needs to obtain the heating at different levels under at least three load condition in embodiments of the present invention
The steam extraction enthalpy of device, the extraction for heat supply amount for going out saliva enthalpy, exporting hydrophobic enthalpy and heater at different levels.N load of the Steam Turbine
The steam extraction enthalpy of heaters at different levels under operating condition, out saliva enthalpy, the hydrophobic enthalpy in outlet can be known from Design of Steam Turbine data.This is each
The extraction for heat supply amount of grade heater can be obtained by extraction for heat supply port table.
Step 902, the type for judging j-th stage heater.
If the type of j-th stage heater is surface heater, step 903 is executed；If the type of j-th stage heater is to converge
Diversity heater executes step 904.
Step 903, the q that j-th stage heater is determined according to formula 10j、τjAnd γj。
Formula 10 are as follows:
Wherein, tjGo out saliva enthalpy, unit kJ/kg for j-th stage heater；tj-1 goes out saliva for -1 grade of heater of jth
Enthalpy, unit kJ/kg；hjFor the steam extraction enthalpy of j-th stage heater, unit kJ/kg；tsjOutlet for j-th stage heater is hydrophobic
Enthalpy, unit kJ/kg.
Step 904, the q that j-th stage heater is determined according to formula 11j、τjAnd γj。
Formula 11 are as follows:
Wherein, tjGo out saliva enthalpy, unit kJ/kg for j-th stage heater；tj-1Go out saliva for -1 grade of heater of jth
Enthalpy, unit kJ/kg；hjFor the steam extraction enthalpy of j-th stage heater, unit kJ/kg；ts(j+1)For the outlet of+1 grade of heater of jth
Hydrophobic enthalpy, unit kJ/kg.
It is worth noting that above-mentioned qjThermal discharge of the steam in j-th stage heater, unit kJ/ are heated for 1 kilogram
kg；τjFor enthalpy liter of the 1 kilogram of water in j-th stage heater, unit kJ/kg；γjIt is hydrophobic in j-th stage heater for 1 kilogram
Thermal discharge, unit kJ/kg.
After step 903 and step 304, step 905 is continued to execute.
Step 905, the equivalent enthalpy drop H that j-th stage heater under each load condition is calculated according to formula 12jWith steam extraction efficiency etaj。
The formula 12 are as follows:
Wherein, hCFor condensing enthalpy；AiFor the τ of i-stage heateriOr γi；qiIt is 1 kilogram of heating steam in i-stage heater
In thermal discharge；HiFor the equivalent enthalpy drop of i-stage heater；Wherein, i=j-m, m >=1, and i >=1；τiIt is 1 kilogram of water i-th
Enthalpy liter in grade heater；γiFor 1 kilogram of hydrophobic thermal discharge in i-stage heater.
It is worth noting that if j-th stage heater is collective-type heater, AiFor τi；If j-th stage heater is surface
Formula heater, the then A of -1 grade of heater of jth to-m grades of heaters of jthiFor γi,-m grades of heaters of the jth are collective-type heating
Device；- m-1 grades of heaters of jth to the 1st grade of heater AiFor τi。
For example, as shown in Figure 10, the equivalent enthalpy drop of the 1st grade of heater are as follows: H1=h1-hc；
The equivalent enthalpy drop of 2nd grade of heater are as follows:
The equivalent enthalpy drop of 3rd level heater are as follows:
Step 906, the steam extraction efficiency eta that j-th stage heater is fitted according to cubic polynomialjBetween Steam Turbine load x
Relation curve.
The relation curve can indicate are as follows: ηj=a1x3+a2x2+a3x+a4
Wherein, a1、a2、a3、a4For constant, can be known by least square method.
Step 907, the actual load x for obtaining Steam Turbine, and according to the actual load x and formula η of Steam Turbinej=
a1x3+a2x2+a3x+a4, calculate the practical steam extraction efficiency eta of the j-th stage heater under the actual load x of Steam Turbinej。
Step 908, the generated energy for obtaining Steam Turbine are Wf, and according to formula:J-th stage is calculated to add
Influence amount Δ H of the extraction for heat supply of hot device to Steam Turbine heat consumptionj。
Wherein, QjFor the extraction for heat supply amount of j-th stage heater；ηjFor the practical steam extraction efficiency of j-th stage heater.
Step 909, by the extraction for heat supply of heaters at different levels to the influence amount Δ H of Steam Turbine heat consumptionjSuperposition, determines steamer
Influence total amount Δ H of the machine extraction for heat supply to Steam Turbine heat consumption.
For example, can be indicated by formula are as follows: Δ H=∑ Δ Hj。
The extraction for heat supply of the embodiment of the present invention can determine steam turbine to the calculation method of the influence amount of Steam Turbine heat consumption
Influence total amount Δ H of the extraction for heat supply to Steam Turbine heat consumption, consequently facilitating finally attainable efficiency is horizontal to generating set
Research.Solve the problems, such as current calculation method of the extraction for heat supply to the influence amount of Steam Turbine heat consumption not yet.
The description of Fig. 2 to Figure 10, which is described in detail, to be illustrated how to calculate coal quality deviation, ambient temperature deviation and extraction for heat supply
Deviation can quantitatively calculate the size that external condition deviation influences generating set efficiency, to calculate objective factor to generator
The size that group efficiency influences lays the foundation.
S103 is when it is implemented, need the boiler efficiency deviation, Steam Turbine efficiency variation and station service power consumption rate deviation
It brings following formula into respectively and calculates net coal consumption rate deviation delta b' under the multiple operating condition:
Wherein, b is coal consumption design value, ηbFor boiler efficiency design value, Δ (ηb) it is boiler efficiency deviation, ηtbFor steam turbine
Group efficient design value, Δ (ηtb) it is Steam Turbine efficiency variation.
In addition, the right first item is coal consumption design value multiplied by boiler efficiency deviation/boiler efficiency design value in formula 13；
Section 2 is coal consumption design value multiplied by Steam Turbine efficiency variation/Steam Turbine efficient design value, according to Steam Turbine heat consumption
When deviation replaces Steam Turbine efficiency, be changed to before this+number；Section 3 is coal consumption design value multiplied by station service power consumption rate deviation/(100-
Design station service power consumption rate).
S104 is when it is implemented, generating set design parameter, the external condition deviation and equipment performance deviation are brought into
Above-mentioned formula should be up to value calculation formula, so that it may which value should be reached by calculating in unit actual motion.
It should be noted that the number of multiple operating conditions is at least three in the embodiment of the present invention, to increase the accurate of curve
Property.
In S105, according to the default weight and corresponding membership function calculating generating set efficiency of two kinds of differences, it can pass through
Accomplished in many ways in one embodiment, can calculate generating set efficiency R according to following formula:
Wherein, A is the default weight vectors of two kinds of deviations；Point
Not Wei unit coal consumption should reach value bsldWith unit coal consumption target value bobjDeviation delta bobjIt is under the jurisdiction of the first order being subordinate to level V
Degree；Respectively unit coal consumption should reach value bsldIt is practical with unit coal consumption
Value bactDeviation delta bactIt is under the jurisdiction of the degree of membership of the first order to level V.
The default weight vectors (1 row 2 column) of two kinds of deviations can be according to user to influencing objective factor and subjective factor
Assessment of Important result is set, and the sum of two elements should be equal to 1 in vector, and as in an embodiment, the weight of two kinds of deviations is
0.3:0.7, i.e. objective factor weight are 0.3, and subjective factor weight is 0.7, and sum of the two is equal to 1, above-mentioned formula transformation are as follows:
The following detailed description of how calculating
By Δ bobjWith the Deviation of Coal Consumption value that sets directly compared with, carried out using the trapezoidal evaluation model of triangle and half
It calculates, as shown in figure 11.
As shown in Figure 11:
ΔbobjFor S grades of degree of membership are as follows:
ΔbobjFor A grades of degree of membership are as follows:
ΔbobjDegree of membership for B grades:
ΔbobjFor C grades of degree of membership are as follows:
ΔbobjFor D grades of degree of membership are as follows:
S grades above-mentioned, A grades, B grades, C grades, D grades respectively corresponds the 1st grade to the 5th grade, and the 5th grade of rank of the 1st grade of rank highest is most
It is low.
By Δ bactWith the Deviation of Coal Consumption value that sets directly compared with, carried out using the trapezoidal evaluation model of triangle and half
It calculates, as shown in figure 12.
As shown in Figure 12:
ΔbactFor the membership function of S are as follows:
ΔbactFor the membership function of A are as follows:
ΔbactFor the membership function of B:
ΔbactFor the membership function of C are as follows:
ΔbactFor the membership function of D are as follows:
In another embodiment, generating set efficiency R can be calculated according to following formula:
Wherein, A is the default weight vectors of two kinds of deviations；Point
Not Wei unit coal consumption should reach value bsldWith unit coal consumption target value bobjDeviation delta bobjIt is under the jurisdiction of the first order being subordinate to level V
Degree；Respectively unit coal consumption should reach value bsldIt is practical with unit coal consumption
Value bactDeviation delta bactIt is under the jurisdiction of the degree of membership of the first order to level V.
In another embodiment, generating set efficiency R can be calculated according to following formula:
Wherein, A is the default weight vectors of two kinds of deviations；Point
Not Wei unit efficiency should reach value ηsldWith unit efficiency target value ηobjDeviation delta ηobjIt is under the jurisdiction of the first order being subordinate to level V
Degree；Respectively unit efficiency should reach value ηsldWith unit efficiency reality
Value ηactDeviation delta ηactIt is under the jurisdiction of the degree of membership of the first order to level V.
The effective of the embodiment of the present invention be,
Using the present invention, influence total amount Δ H of the extracted steam from turbine heat supply to Steam Turbine heat consumption can be determined, consequently facilitating
Research to the final attainable efficiency level of generating set.Current extraction for heat supply not yet is solved to Steam Turbine heat consumption
The problem of calculation method of influence amount.
Using the present invention, influence of the variation of ambient temperature to Thermal generation unit coal consumption can be quantitatively calculated, it is accurate to calculate
External condition deviation, and then study generating set finally attainable efficiency level.
Using the present invention, influence of the coal quality deviation to Thermal generation unit coal consumption can be quantitatively calculated, it is accurate to calculate outside
Condition deviation, and then study generating set finally attainable efficiency level.
Influence, variation of ambient temperature by quantitative calculating extraction for heat supply to Steam Turbine heat consumption is to Thermal generation unit coal
Influence, equipment performance deviation and design value of the influence, coal quality deviation of consumption to Thermal generation unit coal consumption can be calculated quantitatively and be answered
Up to value, can be quantified based on the deviation that should reach value and target value and actual value according to preset weight and corresponding membership function
Determine that generating set efficiency is horizontal, to instruct unit equipment to improve and operation and management level raising, provides the Appreciation gist of science.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Specific embodiment is applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Explanation be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (27)
1. a kind of motor group energy efficiency analysis method for air characterized by comprising
Obtain comprising generating set design parameter, the practical Coal-fired capacity of boiler, current environmental temperature, Steam Turbine circulating water temperature,
The target value and actual value of rate of load condensate, Steam Turbine heat supply power generation ratio, the generated energy of Steam Turbine, unit performance；
According to the practical Coal-fired capacity of the boiler, current environmental temperature, Steam Turbine circulating water temperature, Steam Turbine heat supply power generation
Generated energy than, Steam Turbine calculates external condition deviation, the external condition deviation be coal quality deviation, ambient temperature deviation and
The sum of extraction for heat supply deviation three；
Under multiple operating conditions, pass through boiler performance test, Steam Turbine Performance test and the test of station service power consumption rate test performance respectively
Boiler efficiency deviation, Steam Turbine efficiency variation and station service power consumption rate deviation are calculated, and according to the boiler efficiency deviation, steam turbine
Group efficiency variation and station service power consumption rate deviation calculate equipment performance deviation；
According in the generating set design parameter, the external condition deviation and equipment performance deviation computer group actual motion
Should up to value；
The difference that should reach value and the target value and actual value is calculated separately, according to the default weight and correspondence of two kinds of differences
Membership function calculates generating set efficiency.
2. motor group energy efficiency analysis method for air according to claim 1, which is characterized in that practical coal-fired according to the boiler
Amount, current environmental temperature, Steam Turbine circulating water temperature, Steam Turbine heat supply power generation ratio, the generated energy calculating of Steam Turbine are outer
Portion's condition deviation, comprising:
The practical Coal-fired capacity of boiler is measured, it is pre- to judge whether the deviation of design coal Coal-fired capacity and the practical Coal-fired capacity of the boiler is greater than
If deviation；
If the deviation of design coal Coal-fired capacity and the practical Coal-fired capacity of the boiler is greater than predetermined deviation value, according to formulaCalculate the variation delta q of boiler solid incomplete combustion loss4；
Calculating furnace coal weight increase according to the difference of generated energy and the practical Coal-fired capacity of the boiler and design coal Coal-fired capacity causes
Station service power consumption rate incrementss Δ λΔB；
Judge whether as-fired coal moisture is more than pre-set moisture value；
If as-fired coal moisture is more than pre-set moisture value, according to exhaust gas temperature deviation delta θLvCalculate heat loss due to exhaust gas variation delta
q2；
According to the variation delta q of the boiler solid incomplete combustion loss4, heat loss due to exhaust gas variation delta q2, station service power consumption rate increase
Dosage Δ λΔBCalculate coal consumption variation delta b caused by coal varitation；
Wherein, CfhFor the unburned combustible in fly ash of practical as-fired coal, %；AarFor the ash content of practical as-fired coal, %；Qar,netFor reality
Border as-fired coal net calorific value as received basis, kJ/kg；q4For boiler solid incomplete combustion loss design value, %.
3. motor group energy efficiency analysis method for air according to claim 2, which is characterized in that practical coal-fired according to the boiler
Amount, current environmental temperature, Steam Turbine circulating water temperature, Steam Turbine heat supply power generation ratio, the generated energy calculating of Steam Turbine are outer
Portion's condition deviation, comprising:
At set environment temperature T, air preheater entrance wind-warm syndrome and air preheater entrance flue gas temperature are obtained, and according to institute
It states air preheater entrance wind-warm syndrome and air preheater entrance flue gas temperature calculates exhaust gas temperature
According to the exhaust gas temperatureCalculate the variation delta q of boiler exhaust heat loss2；
Influence based on environment temperature to back pressure obtains turbine back pressure；
LP Turbine Exhaust Pressure Correction Curves are searched according to the turbine back pressure, obtain the practical heat consumption H under the turbine back pressureR
With design heat consumption HRTHADifference DELTA HR；
According to the variation delta q of boiler exhaust heat loss2And the difference DELTA HRIt is total to calculate influence of the environment temperature to unit coal consumption
Measure Δ T.
4. motor group energy efficiency analysis method for air according to claim 3, which is characterized in that practical coal-fired according to the boiler
Amount, current environmental temperature, Steam Turbine circulating water temperature, Steam Turbine heat supply power generation ratio, the generated energy calculating of Steam Turbine are outer
Portion's condition deviation, comprising:
It obtains the steam extraction enthalpy of the heaters at different levels under n load condition of Steam Turbine, go out saliva enthalpy, the hydrophobic enthalpy in outlet and respectively
The extraction for heat supply amount of grade heater；Wherein, n is more than or equal to 3；
Determine the q of j-th stage heater under each load conditionj、τjAnd γj；Wherein, qjIt is 1 kilogram of heating steam in j-th stage heater
In thermal discharge；τjFor enthalpy liter of the 1 kilogram of water in j-th stage heater；γjFor 1 kilogram of hydrophobic putting in j-th stage heater
Heat；
According to the q of j-th stage heater under each load conditionj、τjAnd γj, calculate j-th stage heater under each load condition
Equivalent enthalpy drop and steam extraction efficiency；
The relation information being fitted according to cubic polynomial between the steam extraction efficiency and Steam Turbine load of j-th stage heater；
The actual load of Steam Turbine is obtained, and according to the actual load and the corresponding cubic polynomial of relation information, is calculated
The practical steam extraction efficiency of j-th stage heater under the actual load；
The generated energy of Steam Turbine is obtained, and according to the extraction for heat supply amount of j-th stage heater, the practical steam extraction of j-th stage heater
The generated energy of efficiency and the Steam Turbine calculates influence amount Δ of the extraction for heat supply to Steam Turbine heat consumption of j-th stage heater
Hj；
By the extraction for heat supply of heaters at different levels to the influence amount Δ H of Steam Turbine heat consumptionjSuperposition, determines extracted steam from turbine heat supply pair
The influence total amount Δ H of Steam Turbine heat consumption.
5. motor group energy efficiency analysis method for air according to claim 2, which is characterized in that if design coal Coal-fired capacity and institute
The deviation of the practical Coal-fired capacity of boiler is stated no more than predetermined deviation value, enables the variation delta of the boiler solid incomplete combustion loss
q4And station service power consumption rate incrementss Δ λΔBIt is zero.
6. motor group energy efficiency analysis method for air according to claim 2, which is characterized in that if as-fired coal moisture is no more than in advance
If moisture value, the heat loss due to exhaust gas variation delta q is enabled2It is zero.
7. motor group energy efficiency analysis method for air according to claim 2, which is characterized in that real according to generated energy and the boiler
The difference of border Coal-fired capacity and design coal Coal-fired capacity calculates station service power consumption rate incrementss Δ λ caused by furnace coal weight increasesΔB, comprising:
Bring the difference of generated energy and the practical Coal-fired capacity of the boiler and design coal Coal-fired capacity into formula
Calculate station service power consumption rate incrementss Δ λ caused by furnace coal weight increasesΔB, wherein Δ B is the practical Coal-fired capacity of boiler and design coal
The difference of Coal-fired capacity；WfFor generated energy.
8. motor group energy efficiency analysis method for air according to claim 2, which is characterized in that according to exhaust gas temperature deviation delta θLvMeter
Calculate heat loss due to exhaust gas variation delta q2, comprising: by exhaust gas temperature deviation delta θLvBring Δ q into2=0.0035 Δ θLv, calculate smoke evacuation heat
Lose variation delta q2, wherein Δ θLv=0.7 Δ Mar, Δ MarIt is practical as-fired coal kind moisture relative to design coal moisture
Increment.
9. the motor group energy efficiency analysis method for air according to any one of claim 2 to 6, which is characterized in that according to the pot
The variation delta q of furnace solid incomplete combustion loss4, heat loss due to exhaust gas variation delta q2, station service power consumption rate incrementss Δ λΔBIt calculates
Coal consumption variation delta b caused by coal varitation, comprising: by the variable quantity of the boiler solid incomplete combustion loss, smoke evacuation heat
Loss variable quantity, station service power consumption rate incrementss bring formula intoIn, caused by calculating coal varitation
Coal consumption variation delta b, wherein bstFor unit design coal consumption, ηBFor boiler efficiency design value, electromechanical consumption design value supplemented by λ.
10. motor group energy efficiency analysis method for air according to claim 3, which is characterized in that entered according to the air preheater
The mild air preheater entrance flue gas temperature of one's intention as revealed in what one says calculates exhaust gas temperatureInclude:
The air preheater entering air temperature and air preheater entrance flue gas temperature are brought into following formula, described in calculating
Exhaust gas temperature
Wherein, θEnFor air preheater entrance flue gas temperature, θLvFor air preheater outlet flue-gas temperature, tEnAir preheater
Entering air temperature.
11. motor group energy efficiency analysis method for air according to claim 10, which is characterized in that according to the exhaust gas temperatureCalculate the variation delta q of boiler exhaust heat loss2, comprising:
By the exhaust gas temperatureIt brings following formula into, calculates the variation delta q of the boiler exhaust heat loss2:
Wherein, q2For the boiler exhaust heat loss design value under the set environment temperature T.
12. motor group energy efficiency analysis method for air according to claim 11, which is characterized in that when the steam turbine is air cooler
When group, the influence based on environment temperature to back pressure obtains turbine back pressure, comprising: the influence according to environment temperature to back pressure is bent
Line obtains the turbine back pressure under current environmental temperature.
13. motor group energy efficiency analysis method for air according to claim 11, which is characterized in that when the steam turbine is clammy machine
When group, the influence based on environment temperature to back pressure obtains turbine back pressure, comprising:
Condenser, which is calculated, according to the design data under load condition exports the temperature difference；
According to Inlet Temperature of Circulating Water and the practical exhaust temperature of the differential thermal calculation；
Water vapor pressure property list is searched according to the practical exhaust temperature, obtains the corresponding steam turbine of the practical exhaust temperature
Back pressure.
14. motor group energy efficiency analysis method for air according to claim 13, which is characterized in that according to the design under load condition
Data calculate condenser and export the temperature difference, comprising:
Water vapor pressure property list is searched according to setting back pressure value, obtains exhaust temperature and condenser under the setting back pressure value
Inflow temperature；
The condenser, which is calculated, according to the exhaust temperature and condenser inflow temperature exports the temperature difference.
15. motor group energy efficiency analysis method for air according to claim 3, which is characterized in that according to boiler exhaust heat loss
Variation delta q2And the difference DELTA HRCalculate influence total amount Δ T of the environment temperature to unit coal consumption, comprising:
By the variation delta q according to boiler exhaust heat loss2And the difference DELTA HRIt brings following formula into, calculates environment temperature
Spend the influence total amount Δ T to unit coal consumption:
Wherein, bstFor unit design coal consumption, g/kWh；ηBFor the boiler efficiency at a temperature of design environment, %；HRDFor design environment
At a temperature of thermal loss of steam turbine, kJ/kWh.
16. motor group energy efficiency analysis method for air according to claim 4, which is characterized in that under each load condition of determination
The q of j-th stage heaterj、τjAnd γj, comprising:
Judge the type of the j-th stage heater；
If the type of the j-th stage heater is surface heater, the q of j-th stage heater is determined according to formula onej、τjWith
γj；
The formula one are as follows:
Wherein, tjGo out saliva enthalpy for j-th stage heater；tj-1Go out saliva enthalpy for -1 grade of heater of jth；hjFor j-th stage heating
The steam extraction enthalpy of device；tsjFor the hydrophobic enthalpy in outlet of j-th stage heater；
If the type of the j-th stage heater is collective-type heater, the q of j-th stage heater is determined according to formula twoj、τjWith
γj；
The formula two are as follows:
Wherein, tjGo out saliva enthalpy for j-th stage heater；tj-1Go out saliva enthalpy for -1 grade of heater of jth；hjFor j-th stage heating
The steam extraction enthalpy of device；ts(j+1)For the hydrophobic enthalpy in outlet of+1 grade of heater of jth.
17. motor group energy efficiency analysis method for air according to claim 16, which is characterized in that described according to each load work
The q of j-th stage heater under conditionj、τjAnd γj, the equivalent enthalpy drop of j-th stage heater and steam extraction efficiency under each load condition are calculated, is wrapped
It includes:
The equivalent enthalpy drop H of j-th stage heater under each load condition is calculated according to formula threejWith steam extraction efficiency etaj；
The formula three are as follows:
Wherein, hCFor condensing enthalpy；AiFor the τ of i-stage heateriOr γi；qiIt is 1 kilogram of heating steam in i-stage heater
Thermal discharge；HiFor the equivalent enthalpy drop of i-stage heater；Wherein, i=j-m, m >=1, and i >=1；τiAdd for 1 kilogram of water in i-stage
Enthalpy liter in hot device；γiFor 1 kilogram of hydrophobic thermal discharge in i-stage heater.
18. motor group energy efficiency analysis method for air according to claim 17, which is characterized in that if j-th stage heater is to collect
Formula heater, then AiFor τi；If j-th stage heater is surface heater, -1 grade of heater of jth to-m grades of heaters of jth
AiFor γi, the jth-m grades of heaters are collective-type heater；- m-1 grades of heaters of jth to the 1st grade of heater AiFor τi。
19. motor group energy efficiency analysis method for air according to claim 18, which is characterized in that described quasi- according to cubic polynomial
Close the relation information between the steam extraction efficiency and Steam Turbine load of j-th stage heater, comprising:
The steam extraction efficiency eta of j-th stage heater is fitted according to cubic polynomialjWith the relation curve between Steam Turbine load x；Institute
State relation curve are as follows:
ηj=a1x3+a2x2+a3x+a4
Wherein, a1、a2、a3、a4For constant.
20. motor group energy efficiency analysis method for air according to claim 19, which is characterized in that the reality for obtaining Steam Turbine
Border load, and according to the actual load and the corresponding cubic polynomial of relation information, the j-th stage calculated under the actual load adds
The practical steam extraction efficiency of hot device, comprising:
The actual load x of Steam Turbine is obtained, and according to the actual load x and formula η of Steam Turbinej=a1x3+a2x2+a3x+a4,
Calculate the practical steam extraction efficiency eta of the j-th stage heater under the actual load x of Steam Turbinej。
21. motor group energy efficiency analysis method for air according to claim 20, which is characterized in that the hair for obtaining Steam Turbine
Electricity, and according to the extraction for heat supply amount of j-th stage heater, the practical steam extraction efficiency of j-th stage heater and the Steam Turbine
Generated energy calculates influence amount Δ H of the extraction for heat supply to Steam Turbine heat consumption of j-th stage heaterj, comprising:
The generated energy for obtaining Steam Turbine is Wf；
According to formula:Calculate influence amount Δ of the extraction for heat supply to Steam Turbine heat consumption of j-th stage heater
Hj；
Wherein, QjFor the extraction for heat supply amount of j-th stage heater；ηjFor the practical steam extraction efficiency of j-th stage heater.
22. motor group energy efficiency analysis method for air according to claim 1, which is characterized in that according to the boiler efficiency deviation,
Steam Turbine efficiency variation and station service power consumption rate deviation calculate equipment performance deviation, comprising:
It is calculated separately under the multiple operating condition according to the boiler efficiency deviation, Steam Turbine efficiency variation and station service power consumption rate deviation
Net coal consumption rate deviation delta b'；
According to the load point and net coal consumption rate deviation generating device performance curve under the multiple operating condition, under current loads, root
Equipment performance deviation is obtained according to the equipment performance curve.
23. motor group energy efficiency analysis method for air according to claim 22, which is characterized in that inclined according to the boiler efficiency
Difference, Steam Turbine efficiency variation and station service power consumption rate deviation calculate separately the net coal consumption rate deviation delta b' under the multiple operating condition, wrap
It includes:
The boiler efficiency deviation, Steam Turbine efficiency variation and station service power consumption rate deviation are brought into respectively described in following formula calculating
Net coal consumption rate deviation delta b' under multiple operating conditions:
Wherein, b is coal consumption design value, ηbFor boiler efficiency design value, Δ (ηb) it is boiler efficiency deviation, ηtbFor Steam Turbine effect
Rate design value, Δ (ηtb) it is Steam Turbine efficiency variation.
24. according to claim 1 to motor group energy efficiency analysis method for air described in any one of 8,10 to 23, which is characterized in that press
According to the default weight and corresponding membership function calculating generating set efficiency of two kinds of differences, comprising: calculated and generated electricity according to following formula
Unit efficiency R:
Wherein, A is the default weight vectors of two kinds of deviations；Respectively
Unit coal consumption should reach value bsldWith unit coal consumption target value bobjDeviation delta bobjIt is under the jurisdiction of the degree of membership of the first order to level V；Respectively unit coal consumption should reach value bsldWith unit coal consumption actual value
bactDeviation delta bactIt is under the jurisdiction of the degree of membership of the first order to level V.
25. motor group energy efficiency analysis method for air according to claim 9, which is characterized in that according to the default power of two kinds of differences
Weight and corresponding membership function calculate generating set efficiency, comprising: calculate generating set efficiency R according to following formula:
Wherein, A is the default weight vectors of two kinds of deviations；Respectively
Unit coal consumption should reach value bsldWith unit coal consumption target value bobjDeviation delta bobjIt is under the jurisdiction of the degree of membership of the first order to level V；Respectively unit coal consumption should reach value bsldWith unit coal consumption actual value
bactDeviation delta bactIt is under the jurisdiction of the degree of membership of the first order to level V.
26. according to claim 1 to motor group energy efficiency analysis method for air described in any one of 8,10 to 23, which is characterized in that press
According to the default weight and corresponding membership function calculating generating set efficiency of two kinds of differences, comprising: calculated and generated electricity according to following formula
Unit efficiency R:
Wherein, A is the default weight vectors of two kinds of deviations；Respectively
Unit efficiency should reach value ηsldWith unit efficiency target value ηobjDeviation delta ηobjIt is under the jurisdiction of the degree of membership of the first order to level V；Respectively unit efficiency should reach value ηsldWith unit efficiency actual value
ηactDeviation delta ηactIt is under the jurisdiction of the degree of membership of the first order to level V.
27. motor group energy efficiency analysis method for air according to claim 9, which is characterized in that according to the default power of two kinds of differences
Weight and corresponding membership function calculate generating set efficiency, comprising: calculate generating set efficiency R according to following formula:
Wherein, A is the default weight vectors of two kinds of deviations；Respectively
Unit efficiency should reach value ηsldWith unit efficiency target value ηobjDeviation delta ηobjIt is under the jurisdiction of the degree of membership of the first order to level V；Respectively unit efficiency should reach value ηsldWith unit efficiency actual value
ηactDeviation delta ηactIt is under the jurisdiction of the degree of membership of the first order to level V.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111260138B (en) * | 2020-01-18 | 2023-05-26 | 湖南大学 | Dynamic optimization method for thermal power unit energy consumption by weighting and self-adaptive parallel association rule |
| CN111581787B (en) * | 2020-04-20 | 2023-05-30 | 中国大唐集团科学技术研究院有限公司华东电力试验研究院 | Method and system for screening heat rate analysis data of steam turbine in real time |
| CN111639417B (en) * | 2020-05-07 | 2023-04-28 | 西安陕鼓动力股份有限公司 | Steam parameter optimization method and system for waste heat utilization power generation steam turbine |
| CN111737859B (en) * | 2020-06-02 | 2024-03-12 | 国网江西省电力有限公司电力科学研究院 | Improved turbine unit variable-pressure operation consumption difference quantitative calculation model construction method |
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| CN112231908B (en) * | 2020-10-15 | 2023-03-21 | 国网山东省电力公司电力科学研究院 | Method for determining upper and lower load limits corresponding to extraction flow of extraction condensing unit |
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| CN112507534B (en) * | 2020-11-25 | 2022-07-19 | 国网山东省电力公司电力科学研究院 | Conversion method and system for power supply coal consumption rate of cogeneration unit in heat supply period |
| CN112765227B (en) * | 2020-12-09 | 2023-02-24 | 华能陕西发电有限公司 | Coal-fired generator set backpressure characteristic curve acquisition system and method based on DCS data mining |
| CN112685969A (en) * | 2020-12-24 | 2021-04-20 | 润电能源科学技术有限公司 | Optimization method for cold end of large-scale thermal power plant |
| CN112700350A (en) * | 2020-12-28 | 2021-04-23 | 润电能源科学技术有限公司 | Method and device for calculating coal consumption of heat supply influence power supply of cogeneration unit |
| CN112594776A (en) * | 2020-12-30 | 2021-04-02 | 华电郑州机械设计研究院有限公司 | Control method and system suitable for load adjustment of heat supply unit |
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| CN115017730B (en) * | 2022-06-29 | 2024-03-12 | 西安热工研究院有限公司 | Condensate pump electricity consumption correction calculation method in station service electricity consumption calculation of thermal power generating unit |
| CN115860438A (en) * | 2023-02-23 | 2023-03-28 | 大唐山东能源营销有限公司 | Method, system and medium for distributing electric quantity of coal-fired power plant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1611920A (en) * | 2003-11-01 | 2005-05-04 | 许建壮 | On-line intelligent analysis and economic diagnosis for steam turbo-generator unit |
| CN101799848A (en) * | 2010-03-09 | 2010-08-11 | 江西省电力科学研究院 | Method for obtaining energy loss analysis parameter answer value of furnace of thermal power set |
| CN102621945A (en) * | 2012-03-05 | 2012-08-01 | 内蒙古自治区电力科学研究院 | Efficiency dynamic optimizing operation closed-loop optimization control method based on optimum operating conditions of thermal generator set |
| CN103678915A (en) * | 2013-12-12 | 2014-03-26 | 广东电网公司电力科学研究院 | Thermal power plant generator set varying duty energy consumption analysis method based on approach method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105224735B (en) * | 2015-09-21 | 2019-01-11 | 华北电力科学研究院有限责任公司 | Generating set energy efficiency analysis method for air |
-
2015
- 2015-09-21 CN CN201510603343.1A patent/CN105224735B/en active Active
-
2016
- 2016-09-20 WO PCT/CN2016/099426 patent/WO2017050207A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1611920A (en) * | 2003-11-01 | 2005-05-04 | 许建壮 | On-line intelligent analysis and economic diagnosis for steam turbo-generator unit |
| CN101799848A (en) * | 2010-03-09 | 2010-08-11 | 江西省电力科学研究院 | Method for obtaining energy loss analysis parameter answer value of furnace of thermal power set |
| CN102621945A (en) * | 2012-03-05 | 2012-08-01 | 内蒙古自治区电力科学研究院 | Efficiency dynamic optimizing operation closed-loop optimization control method based on optimum operating conditions of thermal generator set |
| CN103678915A (en) * | 2013-12-12 | 2014-03-26 | 广东电网公司电力科学研究院 | Thermal power plant generator set varying duty energy consumption analysis method based on approach method |
Non-Patent Citations (10)
| Title |
|---|
| Chenxi Song 等.A data envelopment analysis for energy efficiency of coal-fired power units in China.《Energy Conversion and Management》.2015,第102卷第121-130页. |
| Energy-consumption Benchmark Diagnosis of Thermal Power Units Under Varying Operation Boundary;WANG Ningling 等;《Proceedings of the CSEE》;20131017;第26卷;第1-7页 |
| Method for Determining Energy-consumption Benchmark State in the Thermal System of Coal-fired Units Based on Hybrid Model;Longfei Zhu 等;《Applied Mechanics and Materials》;20141001;第654卷;第93-96页 |
| Performance Analysis From The Efficiency Estimation of Coal Fired Boiler;Moni Kuntal Bora 等;《International Journal of Advanced Research》;20140531;第2卷(第5期);第561-574页 |
| 变工况下热力系统仿真与能效诊断研究;董坤;《中国优秀硕士论文全文数据库.工程科技II辑》;20121015;第2012年卷(第10期);第C042-930页 |
| 基于偏差分析和人工智能方法的电厂机炉运行优化研究;祝芳;《中国优秀硕士学位论文全文数据库.工程科技II辑》;20070315;第2007年卷(第3期);第C042-14页 |
| 基于机组热力性能与负荷因素的火电厂燃料计划研究;蔺剑飞;《中国优秀硕士学位论文全文数据库.工程科技II辑》;20030315;第2003年卷(第1期);第C042-31页 |
| 火电机组性能检测与优化研究;杨志平;《中国优秀硕士学位论文全文数据库.工程科技II辑》;20030615;第2003年卷(第2期);第C039-47页 |
| 电站锅炉运行参数对供电煤耗率的影响;张斌;《中国优秀硕士学位论文全文数据库.工程科技II辑》;20110515;第2011年卷(第5期);第C042-190页 |
| 超临界锅炉能量系统仿真与运行优化研究;代勇;《中国优秀硕士学位论文.工程科技II辑》;20121015;第2012年卷(第10期);第C039-56页 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109785187A (en) * | 2019-03-14 | 2019-05-21 | 国网山东省电力公司电力科学研究院 | A kind of electric set electric supply coal consumption detection data bearing calibration |
| CN109785187B (en) * | 2019-03-14 | 2020-10-16 | 国网山东省电力公司电力科学研究院 | Method for correcting power supply coal consumption detection data of generator set |
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