CN105844097B - Wind power calculation algorithms are abandoned in the electric system of the steam power plant of the heat-accumulator tank containing configuration - Google Patents

Wind power calculation algorithms are abandoned in the electric system of the steam power plant of the heat-accumulator tank containing configuration Download PDF

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CN105844097B
CN105844097B CN201610168847.XA CN201610168847A CN105844097B CN 105844097 B CN105844097 B CN 105844097B CN 201610168847 A CN201610168847 A CN 201610168847A CN 105844097 B CN105844097 B CN 105844097B
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heat
unit
power plant
accumulator tank
thermal power
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CN105844097A (en
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李纯
王海霞
吕泉
巴宇
刘娆
李卫东
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Dalian University of Technology
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Dalian University of Technology
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Abstract

The present invention provides a kind of electric system of the heat-accumulator tank steam power plant containing configuration and abandons wind power calculation algorithms, including：Set the systematic parameter of electric system；It abandons wind power according to the original of day part before systematic parameter computer system configurations heat-accumulator tank and original abandons wind-powered electricity generation amount；Judge that heat-accumulator tank working condition abandons landscape condition with original, if abandoning wind and heat-accumulator tank heat not discharging all, the system operational parameters of heat-accumulator tank exothermic process are then calculated according to heat-accumulator tank heat release power limit etc., if nothing abandons wind and heat-accumulator tank does not store completely, the system operational parameters of heat-accumulator tank heat-accumulating process are then calculated according to heat-accumulator tank accumulation of heat power limit etc., the system operational parameters include：The amount of stored heat for abandoning wind power and heat-accumulator tank after system configuration heat-accumulator tank；It abandons wind power calculation according to day part after system configuration heat-accumulator tank it always abandons wind-powered electricity generation amount, and combine and original abandon the calculating of wind-powered electricity generation amount and abandon wind consumption electricity.Wind power calculation is abandoned in electric system after the present invention realizes steam power plant's configuration heat-accumulator tank.

Description

Wind power calculation algorithms are abandoned in the electric system of the steam power plant of the heat-accumulator tank containing configuration
Technical field
The present embodiments relate to Power System Planning and operation field, more particularly to a kind of steam power plant of the heat-accumulator tank containing configuration Electric system abandon wind power calculation algorithms.
Background technology
At present China " three Norths " area power grid to abandon landscape condition very serious, main reason is that heating period thermoelectricity unit is adopted With " electricity determining by heat " method of operation, lead to peak load regulation ability degradation, to cause peak load regulation network scarce capacity.It is existing to grind Study carefully and show to configure heat-accumulator tank in the large-scale steam-extracting type steam power plant of " three Norths " area, thermoelectricity unit " electricity determining by heat " can be effectively decoupled Operation constraint, improves generating set peak modulation capacity, and wind is abandoned to reduce.
Steam-extracting type thermoelectricity power generator turbine electric thermal power traffic coverage in the prior art, as shown in Figure 1, setting machine under certain state It is Pel that group electricity, which is contributed, and it is Ph that heat, which is contributed, and operating point should be located in range shown in ABCDA, and model is as follows：
Pel≥Pelmin
Pel≤Pelmax
Pel≥Cm·Ph+K
Pel≤Pelmax-Cv·Ph
Ph≤Phmax
P=Pel+CvPh
Wherein, Pelmin, Pelmax are respectively minimum load, maximum output under unit pure condensate operating mode, Cm=Δ Pel/ Δs The coefficient of elasticity (back pressure slope of a curve can be approximately considered constant) of electrical power and thermal power when Ph is back pressure operation, K is Constant, Cv are the reduction amount that generated output under unit heat supply heat more is extracted when throttle flow is constant.Phmax is that extraction steam unit is maximum Heating power, steam turbine heating power when Phmin is unit generation power minimum, it is Pelmin that corresponding electricity, which is contributed, and P is thermoelectricity Unit steam extraction power.
If it is Ph (E) that certain moment unit heat, which is contributed, then its electricity output can change between Pel (E)~Pel (F), wherein Pel (E) contributes for the period thermalization, that is, the minimum electricity of " electricity determining by heat " is contributed.The corresponding electricity of unit maximum heat output goes out Power is Pelhmax.
As shown in Fig. 2, " system maximum output " refers to the sum of all booting unit variable capacities in figure, usually spike generates electricity Load adds a certain proportion of spinning reserve.Requirement according to system to variable capacity, in conjunction with China《Energy-saving power generation dispatching method Detailed rules for the implementation (tentative)》The safe and stable operation demand of relevant regulations and power grid, you can determine opening for all kinds of units in system Shut down situation.After startup-shutdown determination, according to system to the regulation of all kinds of peak load regulations and the supplying hot water of thermal power plant unit It is flat, you can to determine that the minimum load of system is horizontal, i.e., in figure " system minimum load ".If at this point, equivalent load (i.e. generation load Checking electrical power, as shown in Figure 2) be less than " system minimum load ", then mean that power generation is more than load, to ensure power balance, It just needs to limit wind power output, to cause to abandon wind, as shown in dash area in figure.
However there is no the computational methods that wind power is abandoned about electric system after steam power plant's configuration heat-accumulator tank at present.
Invention content
The embodiment of the present invention provides a kind of electric system of the heat-accumulator tank steam power plant containing configuration and abandons wind power calculation algorithms, with gram Take above-mentioned technical problem.
The present invention abandons wind power calculation algorithms for a kind of electric system of the steam power plant of the heat-accumulator tank containing configuration, including：
The systematic parameter of electric system is set, the systematic parameter includes：Generation load, wind power, the unit of system The accumulation of heat tankage size that parameter, the startup-shutdown state of each unit day part and each thermoelectricity unit are configured；
The original wind power and total abandoned of day part before electric system configuration heat-accumulator tank is calculated according to the systematic parameter Original abandon wind-powered electricity generation amount；
Judge the heat-accumulator tank working condition and to abandon landscape condition, if abandoning wind and the heat-accumulator tank heat does not discharge all, Then according to the heat-accumulator tank heat release power limit, it is original abandon wind power limit, the limitation of thermoelectricity unit climbing rate calculates the accumulation of heat The system operational parameters of tank exothermic process, if nothing abandons wind and the heat-accumulator tank does not store completely, according to the heat-accumulator tank accumulation of heat power Limitation, equivalent load power limit, thermoelectricity unit climbing rate limit the system operational parameters for calculating the heat-accumulator tank heat-accumulating process, The system operational parameters include：The amount of stored heat for abandoning wind power and heat-accumulator tank after system configuration heat-accumulator tank；
According to after the system configuration heat-accumulator tank day part abandon it is total after system configuration heat-accumulator tank described in wind power calculation Abandon wind-powered electricity generation amount, and in conjunction with it is described it is original abandon the calculating of wind-powered electricity generation amount and abandon wind dissolve electricity.
Further, the original of day part abandons wind before calculating the electric system configuration heat-accumulator tank according to the systematic parameter Power and always original abandon wind-powered electricity generation amount, including：
According to systematic parameter, using formula
Pels (j, t)=Cm (j) Phs (j, t)+K (j) j ∈ CHP (1)
The minimum electricity for calculating thermal power plant unit is contributed, wherein the Pels (j, t) is that the minimum electricity of thermal power plant unit is contributed, institute The unit parameter that Cm, K are thermoelectricity unit is stated, Cm=Δ Pel/ Δs Ph indicates unit back pressuce slope of a curve, can be approximately considered often Number, K is constant；Phs (j, t) is thermal power plant unit i horizontal in the heat supply of t moment；CHP is thermal power plant unit number set；
Using formula
Pels (k, t)=Pelmin (k) U (k, t) k ∈ CON (2)
The minimum electricity of calculating pure condensate unit is contributed, wherein and the Pels (k, t) is that the minimum electricity of pure condensate booting unit is contributed, Pelmin is that the minimum electricity of unit is contributed, and fires load by its minimum steady and minimum operational mode determines, U (k, t) is pure condensate unit k In the startup-shutdown state of t moment, it is worth and indicates booting for 1, is worth and indicates to shut down for 0；CON is pure condensate machine group # set；
It is contributed according to the minimum electricity of the thermal power plant unit and the minimum electricity of pure condensate booting unit is contributed when determining each The minimum electricity of section system, which is contributed, is
Wherein, the N is total number of units of thermoelectricity unit and pure condensate unit in the electric system；
It is contributed according to the minimum electricity of the system and determines that the original wind power of abandoning of the period is：
Wherein, PDel (the t)-wind (t) is the equivalent load of the electric system of t moment.
Wind power and formula are abandoned according to the day part is original
Calculate that the system is original to abandon wind-powered electricity generation amount Qwabs, T is period sum in formula.
Further, according to the heat-accumulator tank heat release power limit, it is original abandon wind power limit, thermoelectricity unit climbing rate limit System calculates the system operational parameters of the heat-accumulator tank exothermic process, including：
According to the configured heat-accumulator tank of thermal power plant unit it is maximum can heat release power contribute with corresponding unit heat and can decline space First ratio and the original wind power and thermal power plant unit electricity output abandoned can decline second ratio in the sum of space or first ratio Value and the original third ratio for abandoning the sum of wind power and the electricity output of thermal power plant unit reduction correct the minimum electricity of the thermal power plant unit It contributes and corresponding heat is contributed；
The heat for correcting the thermal power plant unit with the limitation of climbing rate according to the steam extraction power of thermal power plant unit is contributed and corresponding minimum Electricity is contributed；
It is contributed according to the revised heat and the amount of stored heat of corresponding minimum electric output calculation heat-accumulator tank and abandons wind power.
Further, the maximum according to the configured heat-accumulator tank of thermal power plant unit can heat release power contribute with corresponding unit heat Can decline space the first ratio and it is original abandon wind power and thermal power plant unit electricity contribute can decline the sum of space the second ratio or First ratio described in person and the original third ratio for abandoning the sum of wind power and the electricity output of thermal power plant unit reduction correct the heat supply The minimum electricity of unit is contributed and corresponding heat is contributed, including：
Using formula
Calculate the configured heat-accumulator tank of thermal power plant unit maximum can heat release power and the thermal power plant unit heat contribute and can decline sky Between the first ratio cc (i, t), wherein HS (i, t-1) is that the heat-accumulator tank of thermoelectricity unit i configuration is remaining after the t-1 moment Amount of stored heat, Down (i) are configured the exothermic maximum power of heat-accumulator tank by thermoelectricity unit i, so molecule indicates thermal power plant unit i in formula The heat that configured heat-accumulator tank can at most be released in t moment；Phmin (i) is that thermal power plant unit i corresponds to its minimum under back pressure operating mode The heat of electric output Pelmin is contributed, so denominator indicates that thermal power plant unit i contributes in the at most reducible heat of t moment in formula；
If first ratio is more than 1, according to formula
Original wind power and the thermal power plant unit electricity abandoned is calculated to contribute second ratio beta (t) in the sum of space that can decline；
Judge whether second ratio is more than 1, if so, it is Pelmin to determine that the minimum electricity of the thermal power plant unit is contributed (i), it is Phmin (i) that corresponding heat, which is contributed,；If it is not, then according to formula
Pel (i, t)=Pels (i, t)-β (t) (Pels (i, t)-Pelmin (i))
Correct the minimum electricity output Pel (i, t) of the thermal power plant unit and corresponding hot output Ph (i, t)；
If first ratio is not more than 1, according to formula
It calculates the thermal power plant unit heat and contributes and correspond to minimum electricity output, and according to formula
Calculate the original third ratio η (t) for abandoning the sum of wind power and the electricity output of thermal power plant unit reduction；
If the third ratio is less than 1, according to formula
Pel (i, t)=Pels (i, t)-η (t) (Pels (i, t)-Pel (i, t))
It corrects the electric output of minimum of the thermal power plant unit and corresponds to heat and contribute, make the sum of electric output of thermal power plant unit reduction just Well wind power is abandoned equal to original；
If the third ratio is not less than 1, the minimum electricity for not correcting the thermal power plant unit is contributed and corresponding heat is contributed.
Further, the heat that the thermal power plant unit is corrected according to the steam extraction power of thermal power plant unit and the limitation of climbing rate contribute and Corresponding minimum electricity is contributed, including：
According to formula
P (i, t)=Pel (i, t)+Cv (i) Ph (i, t) (12)
Up (i, t)=max (0, P (i, t)-P (i, t-1)) (13)
Down (i, t)=max (0, P (i, t-1)-P (i, t)) (14)
The steam extraction power of the thermal power plant unit and the upper climbing power of the thermal power plant unit and lower climbing power are calculated, In, Cv is the reduction amount that generated output under unit heat supply heat more is extracted when thermoelectricity unit throttle flow is constant, and P (i, t) is heat supply Steam extraction power of the unit i in t moment；Up (i, t), down (i, t) be respectively thermal power plant unit i in the upper climbing power of t moment and Lower climbing power；
If the lower climbing power is more than under the thermal power plant unit maximum power of climbing, according to formula
Pel (i, t)=Cm (i) Ph (i, t)+K (i)
The heat for correcting the thermal power plant unit is contributed and corresponding minimum electricity is contributed, and wherein downramp (i) is thermoelectricity unit i's The lower power of climbing of maximum；
If the upper climbing power is more than in the thermal power plant unit maximum power of climbing, according to formula
Pel (i, t)=Cm (i) Ph (i, t)+K (i)
The heat for correcting the thermal power plant unit is contributed and corresponding minimum electricity is contributed, wherein upramp (i) be thermoelectricity unit i most Big upper power of climbing.
Further, the accumulation of heat according to the revised heat output and corresponding minimum electric output calculation heat-accumulator tank Wind power is measured and abandons, including：
According to formula
Calculate each configured heat-accumulator tank of thermoelectricity unit t moment amount of stored heat；
According to formula
System abandons wind power after calculating thermoelectricity crew qiting heat-accumulator tank.
Further, it is limited according to the heat-accumulator tank accumulation of heat power limit, equivalent load power limit, thermoelectricity unit climbing rate System calculates the system operational parameters of the heat-accumulator tank heat-accumulating process, including：
According to heat-accumulator tank it is maximum can accumulation of heat power and heat contribute can the rising space the 4th ratio and thermal power plant unit heat Elelctrochemical power generation power regulating range and thermal power plant unit electricity contribute can the sum of the rising space the 5th ratio or the 4th ratio and 6th ratio of the sum of the electric output rising value of thermalization generated output adjustable range and thermal power plant unit corrects the thermal power plant unit Heat is contributed；
It is contributed with the minimum electricity of the climbing rate limitation amendment thermal power plant unit according to the steam extraction power of thermal power plant unit and corresponding Heat is contributed；
The amount of stored heat of minimum electric output calculation heat-accumulator tank is contributed and correspond to according to the revised heat and abandons wind power.
Further, according to heat-accumulator tank it is maximum can accumulation of heat power and heat contribute can the 4th ratio of the rising space, heat supply The thermalization generated output adjustable range of unit and thermal power plant unit electricity contribute can the sum of the rising space the 5th ratio or the described 4th 6th ratio of the sum of the electric output rising value of ratio and thermalization generated output adjustable range and thermal power plant unit corrects the heat supply The heat of unit is contributed, including：
Using formula
Computing system thermal power plant unit maximum heat dissolve the sum of power and pure condensate booting unit minimum load t moment value and t When both etching system equivalent loads minimum value, wherein UCHP (t) is t moment Phs (i, t)>0 unit (i.e. thermal power plant unit) Number set；The number set for the booting unit (i.e. pure condensate booting unit) that UCON (t) is t moment Phs (i, t)=0, Pelhmax (i) is the electricity output that thermoelectricity unit i corresponds to maximum heat output Phmax；
Using formula
Calculate the maximum of heat-accumulator tank that thermal power plant unit is configured can accumulation of heat power contribute and can rise with corresponding thermal power plant unit heat Space the 4th ratio, wherein C (i)-HS (i, t-1) indicates that the remaining accumulation of heat of heat-accumulator tank of i-th crew qiting of t moment is empty Between, Up (i) indicates that the maximum accumulation of heat power of the heat-accumulator tank of i-th crew qiting, the γ (i, t) indicate i-th unit of t moment The ratio in the space that the accumulation of heat power that the heat-accumulator tank of configuration can provide can rise with corresponding unit heat output,
If the 4th ratio is more than 1, according to formula
The thermalization generated output adjustable range of computing system and thermal power plant unit electricity contribute can the sum of the rising space the 5th ratio Value；
If the 5th ratio is more than 1, it is determined that it is Pelhmax (i) that the minimum electricity of the thermal power plant unit, which is contributed, corresponding heat It is Phmax (i) to contribute；
If the 5th ratio is not more than 1, according to formula
Pel (i, t)=Pels (i, t)+σ (t) (Pelhmax (i)-Pels (i, t))
The electricity for calculating the thermal power plant unit is contributed and corresponding heat is contributed；
If the 4th ratio is not more than 1, according to formula
Ph (i, t)=Phs (i, t)+min (C (i)-HS (i, t-1), Up (i))
Pel (i, t)=Cm (i) Ph (i, t)+K (i) (23)
It calculates the thermal power plant unit heat and contributes and correspond to minimum electricity output, and according to formula
Calculate the 6th ratio of the sum of electric output rising value of the system thermalization generated output adjustable range and thermal power plant unit Value；
If the 6th ratio is less than 1, according to formula
Pel (i, t)=Pel (i, t)-θ (t) (Pel (i, t)-Pels (i, t))
The minimum electricity for correcting the thermal power plant unit is contributed and corresponding heat is contributed；
If the 6th ratio is not less than 1, the minimum electricity for not correcting the thermal power plant unit is contributed and corresponding heat is contributed.
Further, the heat that the thermal power plant unit is corrected according to the steam extraction power of thermal power plant unit and the limitation of climbing rate contribute and Corresponding minimum electricity is contributed, including：
If the upper climbing power of the thermal power plant unit steam extraction power is more than in the thermal power plant unit maximum power of climbing, root According to formula
Pel (i, t)=Cm (i) Ph (i, t)+K (i) (26)
The heat for correcting the thermal power plant unit is contributed and corresponding minimum electricity is contributed；
If the lower climbing power of the thermal power plant unit steam extraction power is more than under the thermal power plant unit maximum power of climbing, root According to formula
Pel (i, t)=Cm (i) Ph (i, t)+K (i) (27)
The heat for correcting the thermal power plant unit is contributed and minimum electricity is contributed.
Further, contributed according to the revised heat and the amount of stored heat of corresponding minimum electric output calculation heat-accumulator tank with Wind power is abandoned, including：
According to formula
Calculate each configured heat-accumulator tank of thermoelectricity unit t moment amount of stored heat；
According to formula
System abandons wind power after calculating thermoelectricity crew qiting heat-accumulator tank.
The present invention accurately calculate steam power plant configuration heat-accumulator tank after electric system abandon wind consumption electricity, to realize The assessment of the effect of wind electricity digestion after steam power plant's configuration heat-accumulator tank.
Description of the drawings
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 technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair Some bright embodiments for those of ordinary skill in the art without having to pay creative labor, can be with Obtain other attached drawings according to these attached drawings.
Fig. 1 is steam-extracting type thermoelectricity power generator turbine electric thermal power traffic coverage schematic diagram in the prior art；
Fig. 2 is the power balance figure of electric system heating period typical day in the prior art；
Fig. 3 is that wind power calculation algorithms flow chart is abandoned in electric system after present invention configuration heat-accumulator tank；
Fig. 4 is that wind schematic diagram is abandoned in steam power plant of the present invention configuration heat-accumulator tank consumption；
Fig. 5 is that wind power calculation algorithms overall flow figure is abandoned in electric system after present invention configuration heat-accumulator tank；
Fig. 6 is that present system heating period abandons wind power profile；
Typical all power balance figures in January in Fig. 7 embodiment of the present invention；
January, typical case abandoned wind changed power figure week in Fig. 8 embodiment of the present invention；
Typical case in January certain unit heat of week output and heating load diagram in Fig. 9 embodiment of the present invention；
The configured heat-accumulator tank amount of stored heat variation diagram of certain typical all unit in January in Figure 10 embodiment of the present invention；
Heating period abandons wind-powered electricity generation amount with heat-accumulator tank volume change figure in Figure 11 embodiment of the present invention；
Heating period abandons wind and dissolves effect with heat-accumulator tank volume change figure in Figure 12 embodiment of the present invention；
Heating period abandons the marginal electricity of wind consumption with heat-accumulator tank volume change figure in Figure 13 embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fig. 3 is that wind power calculation algorithms flow chart is abandoned in electric system after steam power plant of the present invention configuration heat-accumulator tank, such as Fig. 3 institutes Show, the method for the present embodiment, including：
Step 101, the systematic parameter for setting electric system, the systematic parameter include：Generation load, the wind-powered electricity generation work(of system The accumulation of heat tankage size that rate, unit parameter, the startup-shutdown state of each unit day part and each thermoelectricity unit are configured；
Specifically, entire heating period is 1. divided into T period, takes moment t ∈ 1..T.It is negative to set the power generation of t moment system Lotus PDel (t), wind power wind (t), the setting value can be obtained by prediction or historical data；
2. setting in system has N platform units, every unit includes following parameter：Unit installed capacity Pc, minimum thermal are contributed Phmin and corresponding minimum electric output Pelmin, maximum heat output Phmax and corresponding electric output Pelhmax, the ratio of slope that swashes limit Upramp processed, lower climbing rate limitation downramp and unit electric heating traffic coverage parameter Cv, Cm, K (as shown in Figure 1).
Take i-th unit t moment thermic load be Phs (i, t) i ∈ 1..N.For thermal power plant unit, heating period is divided into In The Initial Period Of Heating, heat supply mid-term, heating latter stage three phases, it is different in the thermic load of heating period different phase, but in same stage Thermic load, which is believed that, to be basically unchanged；And pure condensate unit is considered as thermic load as 0 thermal power plant unit, therefore Phs (i, t)=0, it is corresponding The unit parameter that heat is contributed also is 0.
3. unit is in the startup-shutdown state of heating period, by power grid minimum operational mode, generation load, Heating State, unit The factors such as peak modulation capacity determine (content is the prior art, is not repeated herein), are expressed as U (i, t), are worth and indicate booting, value for 1 It indicates to shut down for 0.
Each booting unit electricity, heat, which are contributed, meets traffic coverage described in Fig. 1 (pure condensate unit operation section is in figure " DA " sections), Shut down unit electricity, heat output is 0.
4. in view of current China's electric system uses balance dispatching mode, so assume each steam power plant's configuration heat-accumulator tank Afterwards, each steam power plant abandons the consumption task of wind power according to the ability fair distribution of thermoelectricity unit, so every thermoelectricity unit is disappearing The producing level during abandoning wind of receiving just is regarded as identical.So this patent assumes the regenerative capacity of every crew qiting Ratio (i.e. heat-accumulator tank utilizes hourage) with its maximum digestion capability (i.e. heating period each stage (Phs-Phmin) maximum value) is It is identical.At this point, the corresponding storage of wind-powered electricity generation maximum digestion capability that the configured accumulation of heat tankage size of every unit, which is it, can be provided Hot tank heat release power is multiplied by fixed hourage τ.I.e.：C (i)=max (Phs (i, t)-Phmin (i)) τ,
The heat-accumulator tank total capacity then configured in system is
As available from the above equation, the accumulation of heat tankage size of pure condensate crew qiting is 0.
Simultaneously, it is assumed that the heat release of each heat-accumulator tank, accumulation of heat power limit are some identical multiple of its capacity, so It is abandoning in wind consumption process, the behavior of each thermoelectricity unit and heat-accumulator tank and effect are regarded as identical.
Step 102, electric system configuration heat-accumulator tank is calculated according to the systematic parameter before the original of day part abandon wind Power；
Specifically, it is determined according to its heat supply level to the thermal power plant unit of day part booting according to systematic parameter " with The fixed electricity of heat " minimum load, using formula
Pels (j, t)=Cm (j) Phs (j, t)+K (j) j ∈ CHP (1)
The minimum electricity for calculating thermal power plant unit is contributed, wherein the Pels (j, t) is that the minimum electricity of thermal power plant unit is contributed, institute The unit parameter that Cm, K are thermoelectricity unit is stated, Cm=Δ Pel/ Δs Ph indicates unit back pressuce slope of a curve, can be approximately considered often Number, K is constant；Phs (j, t) is thermal power plant unit i horizontal in the heat supply of t moment；CHP is thermoelectric perpetual motion machine group # set；
Using formula
Pels (k, t)=Pelmin (k) U (k, t) k ∈ CON (2)
Calculate pure condensate unit minimum electricity contribute, wherein the Pels (k, t) be pure condensate be switched on unit k t moment most Small electricity is contributed, and Pelmin is that the minimum electricity of unit is contributed, and fires load by its minimum steady and minimum operational mode determines that U (k, t) is Pure condensate unit k is worth in the startup-shutdown state of t moment and indicates booting for 1, is worth and indicates to shut down for 0；CON is pure condensate machine group # collection It closes；
It is contributed according to the minimum electricity of the thermal power plant unit and the minimum electricity of pure condensate booting unit is contributed when determining each The minimum electricity of section system, which is contributed, is
Wherein, the N is total number of units of thermoelectricity unit and pure condensate unit in the electric system；
It is contributed according to the minimum electricity of the system and determines that the original wind power of abandoning of the period is：
Wherein, PDel (the t)-wind (t) is the equivalent load of the electric system of t moment.As shown in Figure 2.
Wind power and formula are abandoned according to the day part is original
Calculate that the system is original to abandon wind-powered electricity generation amount Qwabs, T is period sum in formula.
Step 103 judges the heat-accumulator tank working condition and to abandon landscape condition, if abandoning wind and the heat-accumulator tank heat is not complete Portion discharge, then according to the heat-accumulator tank heat release power limit, it is original abandon wind power limit, thermoelectricity unit climbing rate limitation calculate institute The system operational parameters of heat-accumulator tank exothermic process are stated, if nothing abandons wind and the heat-accumulator tank does not store completely, are stored according to the heat-accumulator tank Thermal power limitation, equivalent load power limit, thermoelectricity unit climbing rate limit the system work for calculating the heat-accumulator tank heat-accumulating process Make parameter, the system operational parameters include：The amount of stored heat for abandoning wind power and heat-accumulator tank after system configuration heat-accumulator tank；
Specifically, day part abandons wind power after the present embodiment cycle calculations thermal power plant unit configuration heat-accumulator tank
Thermoelectricity unit is after configuring heat-accumulator tank, on the basis of minimum load point can be with (Phs (i, t), Pels (i, t)), It is adjusted by adjusting heat-accumulator tank charge and discharge thermal power.
It is calculated using following steps and abandons wind power after configuring accumulation of heat：
1. setting HS (i, 0)=C (i) i ∈ 1..N, it is full to indicate that the heat-accumulator tank of all crew qitings has stored before carving at the beginning Heat；
2. taking t=1；
3. all operating states of the units of t moment are judged, if meeting HS (i, t-1)>0Pwabs(t)>0 (wherein HS (i, t-1) For amount of stored heat of the heat-accumulator tank after t-1 moment of i-th crew qiting), heat-accumulator tank is corresponded at this time answers heat release to dissolve wind Electricity, thermal power plant unit minimum load point should on the basis of (Phs (i, t), Pels (i, t)) along Fig. 1 BC sections move down, turn heat-accumulator tank and put Hot calculating process A；If meeting HS (i, t-1)<C (i) Pwabs (t)=0, correspond at this time heat-accumulator tank should accumulation of heats more as possible in case abandoning Wind arrive, thermal power plant unit minimum load point should on the basis of (Phs (i, t), Pels (i, t)) along Fig. 1 BC sections move up, turn accumulation of heat Tank accumulation of heat calculating process B；Other situations, heat-accumulator tank not accumulation of heat also not heat release, turn calculating process C；
4. if t=T at this time, indicates that the minimum electricity of all moment units is contributed, heat is contributed, heat-accumulator tank amount of stored heat and system abandon wind Power etc., which has all calculated, to be finished, and is gone to step 5.；Otherwise t=t+1 is enabled, subsequent time calculating is turned, 3. return to step judges t moment item Part；
5. calculating terminates, by data summarizations such as unit Pel (i, t), Ph (i, t), HS (i, t), Pwab (t) and export.
Wind power of abandoning after computer system configurations heat-accumulator tank includes heat-accumulator tank exothermic process and heat-accumulating process：
A, heat-accumulator tank heat release calculation process：
Exothermic process need to consider the constraint of thermoelectricity unit traffic coverage, abandon wind power limit, heat-accumulator tank heat release power limit, heat Motor group climbing rate limits, calculate each thermoelectricity unit heat output Ph (i, t) of t moment, " electricity determining by heat " and the electric output Pel of minimum Heat-accumulator tank amount of stored heat, concrete model are as follows after (i, t) and t moment：
According to the configured heat-accumulator tank of thermal power plant unit it is maximum can heat release power contribute with corresponding unit heat and can decline space First ratio and the original wind power and thermal power plant unit electricity output abandoned can decline second ratio in the sum of space or first ratio Value and the original third ratio for abandoning the sum of wind power and the electricity output of thermal power plant unit reduction correct the minimum electricity of the thermal power plant unit It contributes and corresponding heat is contributed；
The heat for correcting the thermal power plant unit with the limitation of climbing rate according to the steam extraction power of thermal power plant unit is contributed and corresponding minimum Electricity is contributed；
It is contributed according to the revised heat and the amount of stored heat of corresponding minimum electric output calculation heat-accumulator tank and abandons wind power.
A1, using formula
First ratio cc (i, t) in space can be declined by calculating thermal power plant unit heat release power and contributing with the thermal power plant unit heat, In, HS (i, t-1) be thermoelectricity unit i configuration heat-accumulator tank after the t-1 moment remaining heat, Down (i) be thermoelectric perpetual motion machine The exothermic maximum power of group the configured heat-accumulator tanks of i multiplies some constant for accumulation of heat tankage size, so molecule indicates thermal power plant unit in formula The heat that the configured heat-accumulator tanks of i can at most be released in t moment；Phmin (i) is that thermal power plant unit i corresponds to it most under back pressure operating mode The heat of small electricity output Pelmin is contributed, so denominator indicates that thermal power plant unit i contributes in the at most reducible heat of t moment in formula；Formula Middle molecule indicates that the heat release power that the configured heat-accumulator tank of the unit can be provided in t moment, denominator indicate that unit heat output can The space of decline, thus parameter alpha " heat is contributed " that can be supplemented to indicate heat-accumulator tank that thermoelectricity unit is configured in t moment with should The magnitude relationship that the heat that unit can decline is contributed.
If α (i, t)>1, indicate that the heat release power that the heat-accumulator tank of i-th crew qiting can be provided in t moment is more than corresponding machine The space that group heat output can decline, the heat of unit, which is contributed, at this time is considered as unit operation section and abandons wind power limit, goes to step A2；
Otherwise, indicate the heat release power that can provide of heat-accumulator tank of i-th crew qiting be less than or equal to unit heat contribute can under The space of drop, should by crew qiting heat-accumulator tank can each unit heat of heat release power decision contribute, i.e. the hot output drop of thermal power plant unit Space is equal to the heat release power that corresponding heat-accumulator tank can provide, and goes to step A3 at this time, considers heat-accumulator tank heat release power limit；
A2, according to formula
Original wind power and the thermal power plant unit electricity abandoned is calculated to contribute second ratio beta (t) in the sum of space that can decline；
Molecule is that original when heat-accumulator tank is not configured of unit abandons wind power in formula, and denominator indicates that all booting thermoelectricity units are electric The sum of space that output can decline (it is 0 that pure condensate booting unit electricity output, which can decline space), therefore parameter beta indicates that t moment is original Abandon the magnitude relationship in the sum of space that wind power can decline with all booting thermoelectricity unit electricity outputs.
If β (t)>1, in expression system it is original abandon wind power and be more than all booting thermoelectricity unit electricity contribute the space that can decline The sum of, therefore the minimum load point of all thermal power plant units should be arranged at point (Phmin (i), Pelmin (i)), i.e. Pel (i, t)= Pelmin (i) Ph (i, t)=Phmin (i)；
Otherwise, in expression system it is original abandon wind power less than or equal to all thermal power plant unit electricity contribute the space that can decline it The declines space contributed with, thermal power plant unit electricity should abandon wind power decision by this time original, consider and adopted to current China's electric system With balance dispatching mode, therefore all thermal power plant unit electricity output should all be declined by beta ratio, while to ensure unit balance dispatching Consumption all abandons wind, i.e.,
Pel (i, t)=Pels (i, t)-β (t) (Pels (i, t)-Pelmin (i))
A4 is gone to step, considers the limitation of thermoelectricity unit climbing rate；
Correct the minimum electricity output Pel (i, t) of the thermal power plant unit and corresponding hot output Ph (i, t)；
A3, the α (i, t)≤1 described in A1, i-th unit heat output of t moment are：
Ph (i, t)=Phs (i, t)-min (HS (i, t-1), Down (i)) U (i, t)
Pel (i, t)=Cm (i) Ph (i, t)+K (i) (9)
It calculates the thermal power plant unit heat and contributes and correspond to minimum electricity output, and according to formula
Calculate the original third ratio η (t) for abandoning the sum of wind power and the electricity output of thermal power plant unit reduction；To verify heat supply Whether it is more than original to abandon wind power that the electricity that unit reduces the sum of is contributed.Denominator indicates what all thermal power plant units of t moment reduced in formula The sum of electricity output.
If η (t)<1, indicate that the sum of electricity output that all thermal power plant units of t moment reduce abandons wind power, corresponding drop more than original It has also been more than just to abandon the demand that the heat that wind should reduce is contributed for consumption that low heat, which is contributed, and heat-accumulator tank also just needs to release more at this time Heat.To make full use of heat-accumulator tank amount of stored heat, moment thermal power plant unit electricity, heat output is needed to this to be carried out according to original wind power of abandoning It corrects, formula is as follows：
Pel (i, t)=Pels (i, t)-η (t) (Pels (i, t)-Pel (i, t))
It corrects the electric output of minimum of the thermal power plant unit and corresponds to heat and contribute, make the sum of electric output of thermal power plant unit reduction just Well wind power is abandoned equal to original；
Otherwise, indicate thermal power plant unit reduce electricity contribute the sum of be less than it is original abandon wind power, at this time thermal power plant unit electricity, heat Output is not required to correct.
A4 is gone to step, considers the limitation of thermoelectricity unit climbing rate；
If A4, t=1, it is not required to consider the limitation of thermoelectricity unit climbing rate, goes to step A5；
Otherwise, to the thermoelectricity unit (i.e. thermal power plant unit) that the t-1 moment is switched on, according to Fig. 1 and formula
P (i, t)=Pel (i, t)+Cv (i) Ph (i, t) (12)
Up (i, t)=max (0, P (i, t)-P (i, t-1)) (13)
Down (i, t)=max (0, P (i, t-1)-P (i, t)) (14)
Calculate the steam extraction power of thermal power plant unit and the upper climbing power of the thermal power plant unit and lower climbing power, wherein be The reduction amount that generated output under unit heat supply heat more is extracted when thermoelectricity unit throttle flow is constant is thermal power plant unit i in t moment Steam extraction power；Upper climbing power and lower climbing power of the respectively thermal power plant unit i in t moment；
If lower climbing power is more than under the thermal power plant unit maximum power of climbing, unit t moment should be scaled Electricity, heat are contributed, i.e.,
Pel (i, t)=Cm (i) Ph (i, t)+K (i) (15)
Wherein, Pel (i, t-1), Ph (i, t-1) are respectively the electricity of t-1 moment units, heat output.
If upper climbing power is more than in the thermal power plant unit maximum power of climbing, unit t moment should be scaled Electricity, heat are contributed, i.e.,
Pel (i, t)=Cm (i) Ph (i, t)+K (i) (16)
If the unit t-1 moment is not switched on, the minimum load point of t moment unit run on (Phs (i, t), Pels (i, t))。
It goes to step A5, calculates the amount of stored heat of all heat-accumulator tanks after t moment；
Amount of stored heat is after A5, t moment
Parameter alpha (i, t), β (t), η (t) are emptied, goes to step A6, calculates t moment system after thermoelectricity crew qiting heat-accumulator tank Abandon wind power；
System t moment abandons wind and is after A6, thermoelectricity crew qiting heat-accumulator tank
Turn above-mentioned steps 4.；
B, heat-accumulator tank accumulation of heat calculating process：
According to heat-accumulator tank it is maximum can accumulation of heat power and heat contribute can the rising space the 4th ratio and thermal power plant unit heat Elelctrochemical power generation power regulating range and thermal power plant unit electricity contribute can the sum of the rising space the 5th ratio or the 4th ratio and 6th ratio of the sum of the electric output rising value of thermalization generated output adjustable range and thermal power plant unit corrects the thermal power plant unit Heat is contributed；
It is contributed with the minimum electricity of the climbing rate limitation amendment thermal power plant unit according to the steam extraction power of thermal power plant unit and corresponding Heat is contributed；
The amount of stored heat of minimum electric output calculation heat-accumulator tank is contributed and correspond to according to the revised heat and abandons wind power.
Specifically, heat-accumulating process need to consider that the constraint of thermoelectricity unit traffic coverage, equivalent load power limit, heat-accumulator tank store Thermal power limitation, the limitation of thermoelectricity unit climbing rate, each thermoelectricity unit heat output Ph (i, t) of calculating t moment, " electricity determining by heat " most Small electricity output Pel (i, t), and heat-accumulator tank amount of stored heat after t moment is calculated, concrete model is as follows：
B1, calculating parameter S (t) are indicated in Fig. 3 " maximum heat dissolves power+pure condensate minimum load " curve t moment value and System equivalent load both values of t moment minimum value, i.e.,
Computing system thermal power plant unit maximum heat dissolve the sum of power and pure condensate booting unit minimum load t moment value and t When both etching system equivalent loads minimum value, wherein UCHP (t) is t moment Phs (i, t)>0 unit (i.e. thermal power plant unit) Number set；The number set for the booting unit (i.e. pure condensate booting unit) that UCON (t) is t moment Phs (i, t)=0, Pelhmax (i) is the electricity output that thermoelectricity unit i corresponds to maximum heat output Phmax；
Using formula
Calculate the configured heat-accumulator tank of thermal power plant unit it is maximum can accumulation of heat power can rise with corresponding thermal power plant unit heat output 4th ratio in space, wherein C (i)-HS (i, t-1) indicate that the remaining accumulation of heat of the heat-accumulator tank of i-th crew qiting of t moment is empty Between, Up (i) indicates the maximum accumulation of heat power of the heat-accumulator tank of i-th crew qiting, multiplies some constant for accumulation of heat tankage size.The γ (i, t) indicates the sky that the accumulation of heat power that the heat-accumulator tank of i-th crew qiting of t moment can provide can rise with corresponding unit heat output Between ratio, molecule indicates that the accumulation of heat power that the configured heat-accumulator tank of the unit can be provided in t moment, denominator indicate the machine in formula Group heat is contributed the space that can rise, therefore parameter γ is indicating that heat-accumulator tank that thermoelectricity unit is configured can be provided in t moment The magnitude relationship that accumulation of heat power is contributed with the heat that the unit can rise.
If γ (i, t)>1, indicate that the accumulation of heat power that the heat-accumulator tank of i-th crew qiting of t moment can provide is more than corresponding machine The space that group heat output can rise, goes to step B2, considers unit operation section and equivalent load power limit at this time；
Otherwise, indicate that the accumulation of heat power that the heat-accumulator tank of i-th crew qiting of t moment can provide is contributed less than or equal to unit heat The space that can rise, should by the heat-accumulator tank of crew qiting can each unit heat output rising space of accumulation of heat power decision, turn at this time Step B3 considers heat-accumulator tank accumulation of heat power limit；
B2, according to formula
The thermalization generated output adjustable range of computing system and thermal power plant unit electricity contribute can the sum of the rising space the 5th ratio Value, in formula in molecule expression system total thermal power plant unit thermalization generated output adjustable range, denominator indicates all thermal power plant units Electricity is contributed the sum of the space that can rise, thus in parameter σ expression systems total thermal power plant unit thermalization generated output adjustable range The magnitude relationship in the sum of space that can rise with all thermal power plant unit electricity output.
Otherwise, the thermalization generated output adjustable range of total thermal power plant unit is less than or equal to all thermal power plant units in expression system The sum of the space that electricity output can rise, the rising space that thermal power plant unit electricity is contributed should be by the total thermalization generated output tune of system at this time Adjusting range determines, it is contemplated that current China's electric system uses balance dispatching mode, therefore all thermal power plant unit electricity output should be by σ ratios Example rises, and is mostly that heat-accumulator tank stores heat as far as possible while to ensure unit balance dispatching, i.e.,
Pel (i, t)=Pels (i, t)+σ (t) (Pelhmax (i)-Pels (i, t))
B4 is gone to step, considers the limitation of thermoelectricity unit climbing rate；
B3, the γ (i, t)≤1 described in B1, the heat-accumulator tank of i-th unit crew qiting can accumulation of heat power be each unit heat The output rising space, i.e.,
Ph (i, t)=Phs (i, t)+min (C (i)-HS (i, t-1), Up (i))
Pel (i, t)=Cm (i) Ph (i, t)+K (i) (23)
It calculates the thermal power plant unit heat and contributes and correspond to minimum electricity output, and according to formula
Calculate the 6th ratio of the sum of electric output rising value of the system thermalization generated output adjustable range and thermal power plant unit Value；Molecule indicates that the total thermalization generated output adjustable range of t moment system, denominator indicate that the electricity of t moment thermal power plant unit goes out in formula The sum of power rising value, therefore parameter θ indicates that t moment system total thermalization generated output adjustable range and the electricity of its thermal power plant unit go out The magnitude relationship of the sum of power rising value.
If θ (t)<1, indicate that the sum of electric output rising value of t moment thermal power plant unit is more than the total thermalization power generation of t moment system Power regulating range abandons wind to avoid generating, and thermal power plant unit electricity, heat are contributed and should be corrected as follows：
Pel (i, t)=Pel (i, t)-θ (t) (Pel (i, t)-Pels (i, t))
Otherwise, indicate that the sum of the electric output rising value of t moment thermal power plant unit is less than the total thermalization power generation of etching system at this time Power regulating range, therefore thermal power plant unit electricity, heat contribute and are not required to correct.
B4 is gone to step, considers the limitation of thermoelectricity unit climbing rate；
If B4, t=1, it is not required to consider the limitation of thermoelectricity unit climbing rate, goes to step B5；
Otherwise, to the thermoelectricity unit that the t-1 moment is switched on, the value of P (i, t)-P (i, t-1) is calculated.
Climb power if the upper climbing power of thermal power plant unit steam extraction power is more than in the thermal power plant unit maximum, should by than The electricity of example adjustment unit t moment, heat are contributed, i.e.,
Pel (i, t)=Cm (i) Ph (i, t)+K (i) (26)
Climb power if the lower climbing power of thermal power plant unit steam extraction power is more than under the thermal power plant unit maximum, should by than The electricity of example adjustment unit t moment, heat are contributed, i.e.,
Pel (i, t)=Cm (i) Ph (i, t)+K (i) (27)
If the unit t-1 moment is not switched on, t moment unit minimum load point should be set to (Phs (i, t), Pels (i, t))。
It goes to step B5, calculates the amount of stored heat of all heat-accumulator tanks after t moment；
Amount of stored heat is after B5, t moment
Parameter S (t), γ (i, t), σ (t), θ (t) are emptied, B6 is gone to step；
System t moment abandons wind and is after B6, thermoelectricity crew qiting heat-accumulator tank
Because heat-accumulating process has contemplated that the case where avoiding abandoning wind caused by accumulation of heat, therefore it is 0 to abandon wind power；
Turn above-mentioned steps 4.；
C, other situations, i.e. (when heat-accumulator tank drains heat and abandons wind or heat-accumulator tank stores full heat and without when abandoning wind) HS (i, t-1)=0Pwabs (t)>0 or HS (i, t-1)=C (i) Pwabs (t)=0, heat-accumulator tank neither accumulation of heat nor heat release are kept Operating status when thermoelectricity unit is unworthy of setting heat-accumulator tank, i.e.,
Ph (i, t)=Phs (i, t)
Pel (i, t)=Pels (i, t) (30)
At this point, the system after configuration heat-accumulator tank abandons wind power, each heat-accumulator tank accumulation of heat identical as the case where heat-accumulator tank is not configured Amount does not change compared with the t-1 moment；Turn above-mentioned steps 4.；
Step 104 abandons system configuration accumulation of heat described in wind power calculation according to day part after the system configuration heat-accumulator tank It is total after tank to abandon wind-powered electricity generation amount, and in conjunction with it is described it is original abandon the calculating of wind-powered electricity generation amount and abandon wind dissolve electricity, including：
Wind power and formula are abandoned according to day part after the heat-accumulator tank of capacity described in the system configuration
The system abandons wind-powered electricity generation amount Qwab after calculating the heat-accumulator tank for configuring the capacity
Original wind-powered electricity generation amount Qwabs is abandoned according to described and the system abandons wind-powered electricity generation amount Qwab and formula
Q=Qwabs-Qwab
(32)
Calculate capacity heat-accumulator tank described in the system configuration abandons wind consumption electricity.
In the present invention steam power plant configuration heat-accumulator tank consumption abandons wind principle, as shown in figure 4, when steam power plant configuration heat-accumulator tank it Afterwards, the wind period is being abandoned, is passing through heat-accumulator tank heat release, you can steam turbine heat demand is being reduced, to reduce steam turbine " electricity determining by heat " Minimum load, it is horizontal to reduce system minimum load, in Fig. 4 " shown in HLKJI " sections, it can be seen that the reduction of minimum load Space is conceded for wind-powered electricity generation online, consumption is abandoned in wind-powered electricity generation amount such as Fig. 4 shown in right diagonal line hatches part.Wherein, heat-accumulator tank heat release disappears It receives and abandons wind process：The thermoelectricity unit being switched on for every, when heat-accumulator tank heat release, steam turbine heating power, which is accordingly reduced, (to be subtracted A small amount of heat release power for being equal to heat-accumulator tank), so as to reduce its " electricity determining by heat " minimum load, space is conceded for wind-powered electricity generation online. In general, depending on the heat release power of heat-accumulator tank supplement for the online space that wind-powered electricity generation is conceded.Heat-accumulator tank heat release power is bigger, vapour The thermic load that turbine is undertaken is smaller, " electricity determining by heat " minimum load it is lower, the online space conceded for wind-powered electricity generation is also got over Greatly.It is less than however, steam turbine electric heating operation characteristic according to figure 1 can be seen that the thermic load undertaken when steam turbine When Phmin, the minimum electricity output of steam turbine can no longer be reduced by continuing through increase heat-accumulator tank heat release power reduction steamer machine-heating load. At this point, the minimum electricity of steam turbine contributes and reaches minimum, the minimum electricity of system, which is contributed, also just reaches minimum, in Fig. 4 " LK " sections institute Show, also just reaches maximum for the online space that wind-powered electricity generation is conceded.This is constrained for thermoelectricity unit traffic coverage.
When system need that thermoelectricity unit dissolves abandon wind power less than its can it is increased it is maximum dissolve space when, can lead to Cross the mode for controlling every unit heat-accumulator tank heat release power so that total consumption space that all thermal power plant units are provided is exactly equal to Wind power is abandoned, in Fig. 4 " shown in HL " sections, to reduce the use to accumulation of heat as far as possible.This is to abandon wind power constraint.
Since the amount of stored heat of heat-accumulator tank is always limited, when system abandon the wind time it is longer when, it is likely that when the storage of heat-accumulator tank Heat still remains when discharging completely abandons wind, and at this time to meet heating demand, the heat supply level of steam turbine needs to be increased to again Heating demand is horizontal, and the minimum load of electricity determining by heat is also restored to the level before heat-accumulator tank heat release, in Fig. 4 " KJI " sections It is shown.This is heat-accumulator tank heat release power constraint.
Other than being influenced by above-mentioned factor, in steam turbine minimum load because heat-accumulator tank coordinates carried out adjustment process to work as In, also suffer from steam turbine output power regulate the speed (i.e. thermoelectricity unit climbing rate) limitation, heat-accumulator tank heat release power limit ( Can make heat-accumulator tank heat release power constraint a part consider) etc. factors influence.Wherein, heat-accumulator tank heat-accumulating process：Heat-accumulator tank is wanted Wind can be abandoned abandoning wind period heat release consumption, it is necessary to carry out accumulation of heat in advance before abandoning wind and arriving.Since context of methods is only Landscape condition is abandoned after assessment steam power plant configuration heat-accumulator tank, so assume that heat-accumulator tank uses following operation reserve：Heat-accumulator tank heat is not When storing full and this moment without wind is abandoned, then improve as possible thermoelectricity unit heating power (such as Fig. 1, corresponding " electricity determining by heat " minimum electricity goes out Power also accordingly improves) to heat-accumulator tank accumulation of heat, as early as possible to store heat-accumulator tank completely, what reply may face abandons landscape condition；And in accumulation of heat Tank heat does not drain and this moment is in the presence of when abandoning wind, then according to wind and heat-accumulator tank emission capacity is abandoned, reduces steam turbine power generation power, Insufficient heat supply part is then met by heat-accumulator tank heat release.
It according to above-mentioned strategy, is abandoned the wind period non-, the steam turbine of thermoelectricity unit should carry out maximum power storage to heat-accumulator tank Heat, it means that the heating power of steam turbine should be set as Phmax at this time, and it be Fig. 1 that minimum electricity corresponding at this time, which is contributed, The corresponding generated output of middle B points, i.e. Pelhmax.All thermoelectricity units in integrated system, the at this time minimum load of system such as Fig. 4 In " shown in CD " sections.This is constrained for thermoelectricity unit traffic coverage.
When due to operation, it is impossible to cause to abandon wind because of accumulation of heat, therefore, when equivalent load curve is less than in Fig. 4 " CD " Section line when, accumulation of heat power should be reduced at this time, cause to abandon wind to avoid minimum load is excessive, in Fig. 4 " BC " and " DE " sections institute Show.This is equivalent load power constraint.
In addition to steam turbine traffic coverage and equivalent load curve influence whether heat-accumulating process, the climbing rate limitation of steam turbine, The accumulation of heat power limit of heat-accumulator tank also influences whether heat-accumulating process.
For example, this example is to rely on to supplying with the practical installation of northeast province power grid and certain year heating period actual operating data Landscape condition of abandoning in warm period is carried out by hour simulation analysis.Wherein the 1-2 months, December are heating mid-term, and March is heating latter stage, 11 The moon is In The Initial Period Of Heating, totally 3648 hours, i.e. T=3648.Above-mentioned computational methods overall flow figure, as shown in Figure 5.Wherein heating period Day part electric load uses the sum of each fired power generating unit output and wind power output in real system, and wind power is by historical data and reality Border wind power output is fitted, and each unit parameter uses actual set data, day part Unit Combination to use actual operating data, Heating period each stage, each thermoelectricity unit heating demand was determined by thermal power plant's minimum operational mode and thermoelectricity unit Electrothermal Properties.Its In, for the accumulation of heat tankage size of each thermoelectricity crew qiting, fixed hourage τ=6 are taken, then heat-accumulator tank total capacity is in system
With reference to existing pilot project, heat-accumulator tank accumulation of heat, heat release power limit constant take 0.13,0.15 respectively.Table 1 is power grid Power supply installation structure.
Table 1
Simulation calculation is carried out in aforementioned manners, and no hold over system heating period abandons wind-powered electricity generation amount and reaches 4.6x105MWh accounts for wind-force 10%；After configuring the heat-accumulator tank that total capacity is 25002MWh, wind-powered electricity generation amount is abandoned in heating period and is decreased to 2.1x105Wind is abandoned in MWh, consumption Electricity 2.5x105MWh is accounted for and original is abandoned the 54.2% of wind-powered electricity generation amount.
Heating period abandons the distribution of wind power as shown in fig. 6, as can be seen from Figure, system abandons more points of wind power when heat-accumulator tank is not configured Cloth is in January, 2 months, December, and it is almost 0 to abandon wind power March；After system configuration heat-accumulator tank, day part abandon wind power both less than etc. Wind power is abandoned in original, it is larger to abandon wind consumption electricity with January, 2 months, November, December.
It takes and is analyzed for typical week in January, wherein typical all power balance figures in January are as shown in fig. 7, allusion quotation in January Wind changed power figure is abandoned in type week as shown in figure 8, certain typical all thermal power plant unit heat in January is contributed and thermic load is as shown in figure 9, January Certain configured heat-accumulator tank amount of stored heat variation diagram of certain typical all thermal power plant unit is as shown in Figure 10.It is worth noting that, thermoelectric perpetual motion machine in Fig. 9 Group is 300MW units, is 276MW in the heating demand in January, configuration capacity is the heat-accumulator tank of 122x6=732MWh, such as Figure 10 institutes Show.
Each moment systematic electricity balances, abandons wind changed power in corresponding diagram 7, Fig. 8, Fig. 9, Figure 10, thermal power plant unit heat is contributed And its heat-accumulator tank thermal change of configuration, following four kinds of situations can be divided by the heat-accumulator tank method of operation：
1. when heat-accumulator tank amount of stored heat is less than accumulation of heat tankage size and abandons wind power (32h-46h in such as Fig. 8, Figure 10) without original When：
Heat-accumulator tank accumulation of heat (32h-46h in corresponding diagram 10), the heat of thermoelectricity unit, which is contributed, corresponding improves (32h- in corresponding diagram 9 46h, hot output raising amount are equal with heat-accumulator tank accumulation of heat power)；This results in steam power plant to configure system after heat-accumulator tank " it is fixed with heat Accumulation of heat can system minimum load is not configured more than steam power plant in electricity " minimum load, but system minimum goes out after steam power plant's configuration heat-accumulator tank Power dissolves the minimum value (32h-46h in corresponding diagram 7) of the sum of power and pure condensate minimum load with both equivalent loads less than maximum heat, To ensure not generating to abandon wind power.
2. when heat-accumulator tank amount of stored heat be more than 0 and have it is original abandon wind power (1h-7h in such as Fig. 8, Figure 10) when：
To concede online space to wind-powered electricity generation, the heat of heat-accumulator tank heat release at this time (1h-7h in corresponding diagram 10), thermoelectricity unit is contributed It is corresponding to reduce (1h-7h, hot output reduction amount are equal with heat-accumulator tank heat release power in corresponding diagram 9)；This results in steam power plant to configure Accumulation of heat can system minimum load is not configured less than steam power plant in system minimum load after heat-accumulator tank, is relatively not configured to make to abandon wind power Accumulation of heat can system reduces, but after steam power plant's configuration heat-accumulator tank system minimum load be more than under pure condensate operating mode the sum of minimum load with etc. Imitate both loads maximum value (1h-7h in corresponding diagram 7).
3. when heat-accumulator tank amount of stored heat be 0 and have it is original abandon wind power (19h-31h in such as Fig. 8, Figure 10) when：
Heat-accumulator tank can not heat release to dissolve wind-powered electricity generation, can not accumulation of heat make to abandon the increase of wind power, therefore heat-accumulator tank neither accumulation of heat Can not heat release (19h-31h in corresponding diagram 10), also heat-accumulator tank just is not configured with thermoelectricity unit in the minimum load point of thermal power plant unit When it is consistent；So wind power (19h-31h in corresponding diagram 8) and thermoelectricity are contributed (19h-31h in corresponding diagram 7) and abandoned to the minimum electricity of system Unit is not configured identical when heat-accumulator tank.
4. when heat-accumulator tank store full heat but without it is original abandon wind power (69h-118h in such as Fig. 8, Figure 10) when：
Heat-accumulator tank is not required to heat release consumption wind-powered electricity generation, also can not accumulation of heat to increase amount of stored heat, therefore heat-accumulator tank is unable to accumulation of heat also not Heat release (69h-118h in corresponding diagram 8), the minimum load point of thermal power plant unit are consistent when being also just not configured heat-accumulator tank with thermoelectricity unit； So wind power (69h-118h in corresponding diagram 6) and thermoelectricity unit are contributed (69h-118h in corresponding diagram 7) and abandoned to the minimum electricity of system It is not configured identical when heat-accumulator tank, is 0.
Accumulation of heat tankage size sensitivity analysis：Figure 11 abandons wind-powered electricity generation amount by heating period and becomes with configuration heat-accumulator tank total capacity in system Change figure, Figure 12 is that heating period abandons wind consumption effect with heat-accumulator tank volume change figure, and Figure 13 is that heating period abandons the marginal electricity of wind consumption With configured heat-accumulator tank total capacity variation diagram in system, it is τ=1..87, i.e. heat-accumulator tank that hourage variation range is fixed in three figures Total capacity is 0..362529MWh.
As seen from Figure 11, become larger with heat-accumulator tank total capacity, heating period is abandoned wind-powered electricity generation amount and is gradually reduced, until minimum value 4.2x104MWh is accounted for and original is abandoned the 9.2% of wind.
As seen from Figure 12, become larger with heat-accumulator tank total capacity, heating period abandons wind consumption effect and (abandons wind consumption electricity to account for The original ratio for abandoning wind-powered electricity generation amount) it is gradually increased, it is eventually held in maximum value 90.8%, and improve speed and become larger with accumulation of heat tankage size And it is from fast to slow, it is finally 0.
As shown in figure 13, i.e., often increase τ a unit, abandon the increase of wind consumption electricity, also be understood as abandoning wind-powered electricity generation Measure the speed reduced.As can be seen that becoming larger with heat-accumulator tank total capacity, the speed for abandoning the reduction of wind-powered electricity generation amount continuously decreases, until last It is 0.
The present invention accurately calculate steam power plant configuration heat-accumulator tank after electric system abandon wind consumption electricity, to realize The assessment of the effect of wind electricity digestion after steam power plant's configuration heat-accumulator tank.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme.

Claims (10)

1. wind power calculation algorithms are abandoned in a kind of electric system of the steam power plant of the heat-accumulator tank containing configuration, which is characterized in that including：
The systematic parameter of electric system is set, the systematic parameter includes：The generation load of system, wind power, unit parameter, The accumulation of heat tankage size that each unit day part startup-shutdown state and each thermoelectricity unit are configured；
The original of day part abandons wind power and total original before calculating the electric system configuration heat-accumulator tank according to the systematic parameter Beginning abandons wind-powered electricity generation amount；
Judge the heat-accumulator tank working condition and to abandon landscape condition, if abandoning wind and the heat-accumulator tank heat does not discharge all, root According to the heat-accumulator tank heat release power limit, it is original abandon wind power limit, the limitation of thermoelectricity unit climbing rate calculates the heat-accumulator tank and puts The system of thermal process abandons the amount of stored heat of wind power and each heat-accumulator tank, if nothing abandons wind and the heat-accumulator tank does not store completely, according to Heat-accumulator tank accumulation of heat power limit, equivalent load power limit, the limitation of thermoelectricity unit climbing rate calculate the heat-accumulator tank heat-accumulating process System abandon the amount of stored heat of wind power and heat-accumulator tank；
Total after system configuration heat-accumulator tank described in wind power calculation wind is abandoned according to abandoning for day part after the system configuration heat-accumulator tank Electricity, and in conjunction with it is described it is original abandon wind-powered electricity generation amount calculate configuration heat-accumulator tank after system abandon wind dissolve electricity.
2. according to the method described in claim 1, being configured it is characterized in that, calculating the electric system according to the systematic parameter Before heat-accumulator tank day part it is original abandon wind power and it is total it is original abandon wind-powered electricity generation amount, including：
According to systematic parameter, using formula
Pels (j, t)=Cm (j) Phs (j, t)+K (j) j ∈ CHP (1)
Minimum electricity output Pelss (j, t) of the calculating thermal power plant unit j in t moment, wherein the Cm (j), K (j) are thermoelectricity unit j Unit parameter, Cm=Δ Pel/ Δs Ph indicates the coefficient of elasticity and unit of electrical power and thermal power when unit back pressuce operation Back pressure slope of a curve, when Δ Pel, Δ Ph are respectively unit back pressuce operation the difference of the electrical power of arbitrary point-to-point transmission, thermal power it Difference, K are constant；Phs (j, t) is thermal power plant unit j horizontal in the heat supply of t moment；CHP is thermal power plant unit number set；
Using formula
Pels (k, t)=Pelmin (k) U (k, t) k ∈ CON (2)
Minimum electricity output Pelss (k, t) of the calculating pure condensate unit k in t moment, wherein the Pelmin (k) is to correspond to unit k most Small electricity is contributed, and fires load by its minimum steady and minimum operational mode determines, U (k, t) is startup-shutdowns of the pure condensate unit k in t moment State is worth and indicates booting for 1, is worth and indicates to shut down for 0；CON is pure condensate machine group # set；
It is contributed according to the minimum electricity of the thermal power plant unit and the minimum electricity of pure condensate booting unit contributes and determines that each period is The minimum electricity of system, which is contributed, is
Wherein, the N is total number of units of thermoelectricity unit and pure condensate unit in the electric system；
It is contributed according to the minimum electricity of the system and determines that the original wind power P wabs (t) that abandons of the period is：
Wherein, the PDel (t) is the load of t moment electric system；Wind (t) is the wind power of t moment；PDel(t)- Wind (t) is the equivalent load of t moment electric system；
Wind power and formula are abandoned according to the day part is original
Calculate that the system is original to abandon wind-powered electricity generation amount Qwabs, T is period sum in formula.
3. according to the method described in claim 1, it is characterized in that, according to the heat-accumulator tank heat release power limit, original abandoning wind Power limit, the limitation of thermoelectricity unit climbing rate calculate the system operational parameters of the heat-accumulator tank exothermic process, including：
According to the configured heat-accumulator tank of thermal power plant unit it is maximum can heat release power contribute with corresponding thermal power plant unit heat and can decline space First ratio and the original wind power and thermal power plant unit electricity output abandoned can decline second ratio in the sum of space or first ratio Value and the original third ratio for abandoning the sum of wind power and the electricity output of thermal power plant unit reduction correct the minimum electricity of the thermal power plant unit It contributes and corresponding heat is contributed；
The heat for correcting the thermal power plant unit with the limitation of climbing rate according to the steam extraction power of thermal power plant unit is contributed and corresponding minimum electricity goes out Power；
It is contributed according to the revised heat and the amount of stored heat of corresponding minimum electric output calculation heat-accumulator tank and abandons wind power.
4. according to the method described in claim 3, it is characterized in that, the maximum according to the configured heat-accumulator tank of thermal power plant unit can Heat release power can decline first ratio in space with corresponding thermal power plant unit heat output and original wind power of abandoning goes out with thermal power plant unit electricity Power can decline second ratio in the sum of space or first ratio and original abandon the electricity that wind power is reduced with thermal power plant unit and go out The third ratio of the sum of power corrects the minimum electricity output of the thermal power plant unit and corresponding heat is contributed, including：
Using formula
Calculate the configured heat-accumulator tank of thermal power plant unit it is maximum can heat release power contribute with the thermal power plant unit heat and can decline space First ratio cc (i, t), wherein HS (i, t-1) is heat-accumulator tank remaining accumulation of heat after the t-1 moment of thermoelectricity unit i configurations Amount, Down (i) are configured the exothermic maximum power of heat-accumulator tank by thermoelectricity unit i, and U (i, t) is thermoelectricity unit i opening in t moment Shutdown status is worth and indicates booting for 1, is worth and indicates to shut down for 0, and Phs (i, t) is thermoelectricity unit i horizontal in the heat supply of t moment, Phmin (i) is the heat output that thermal power plant unit i corresponds to its minimum electric output Pelmin under back pressure operating mode；
If first ratio is more than 1, according to formula
Original wind power and the thermal power plant unit electricity abandoned is calculated to contribute second ratio beta (t) in the sum of space that can decline；Wherein Pwabs (t) it is that the original of t moment system abandons wind power；Pels (i, t) is that thermal power plant unit i contributes in the minimum electricity of t moment；N is described Total number of units of thermoelectricity unit and pure condensate unit in electric system；
Judge whether second ratio is more than 1, if so, it is Pelmin (i) to determine that the minimum electricity of the thermal power plant unit is contributed, It is Phmin (i) that corresponding heat, which is contributed,；If it is not, then according to formula
Correct the minimum electricity output Pel (i, t) of the thermal power plant unit and corresponding hot output Ph (i, t), wherein Cm (i), K (i) are The unit parameter of thermoelectricity unit i；
If first ratio is not more than 1, according to formula
The thermal power plant unit heat output Ph (i, t) and corresponding minimum electricity output Pel (i, t) are calculated, and according to formula
Calculate the original third ratio η (t) for abandoning the sum of wind power and the electricity output of thermal power plant unit reduction；
If the third ratio is less than 1, according to formula
Correct the minimum electricity output Pel (i, t) of the thermal power plant unit and corresponding hot output Ph (i, t)；
If the third ratio is not less than 1, the minimum electricity output Pel (i, t) and corresponding heat that do not correct the thermal power plant unit go out Power Ph (i, t).
5. according to the method described in claim 3, it is characterized in that, being repaiied according to the steam extraction power of thermal power plant unit and the limitation of climbing rate The heat of the just described thermal power plant unit is contributed and corresponding minimum electricity is contributed, including：
According to formula
P (i, t)=Pel (i, t)+Cv (i) Ph (i, t) (12)
Up (i, t)=max (0, P (i, t)-P (i, t-1)) (13)
Down (i, t)=max (0, P (i, t-1)-P (i, t)) (14)
The thermal power plant unit i is calculated in the steam extraction power P (i, t) of t moment and the upper climbing power up (i, t) of the thermal power plant unit With lower climbing power down (i, t), wherein Cv (i) be thermoelectricity unit i when throttle flow is constant under back pressure operation operating mode more extract The reduction amount of generated output under unit heat supply heat, Ph (i, t), Pel (i, t) are respectively heat of the corresponding thermal power plant unit i in t moment It contributes and corresponding minimum electricity is contributed；
If the lower climbing power is more than under the thermal power plant unit maximum power of climbing, according to formula
The thermal power plant unit i is corrected in the hot output Ph (i, t) of t moment and corresponding minimum electricity output Pel (i, t), wherein Downramp (i) is power of climbing under the maximum of thermoelectricity unit i；Cm (i), K (i) are the unit parameter of thermoelectricity unit i；
If the upper climbing power is more than in the thermal power plant unit maximum power of climbing, according to formula
The hot output Ph (i, t) of the thermal power plant unit and corresponding minimum electricity output Pel (i, t) are corrected, wherein upramp (i) is heat Climb in the maximum of motor group i power.
6. according to the method described in claim 3, it is characterized in that, it is described according to it is described it is revised heat contribute and it is corresponding most The amount of stored heat of small electricity output calculation heat-accumulator tank and wind power is abandoned, including：
According to formula
Calculate each configured heat-accumulator tank of thermoelectricity unit t moment amount of stored heat, wherein HS (i, t) configures storage by thermoelectricity unit i Amount of stored heat of the hot tank in t moment；N is total number of units of thermoelectricity unit and pure condensate unit in the electric system；Phs (i, t) is heat Motor group i is horizontal in the heat supply of t moment；Ph (i, t) is that the thermal power plant unit i contributes in the heat of t moment after correcting；
According to formula
System abandons wind power in t moment after calculating thermoelectricity crew qiting heat-accumulator tank, wherein the PDel (t) is t moment electric power The load of system；Wind (t) is the wind power of t moment；PDel (t)-wind (t) is the equivalent load of t moment electric system； Pel (i, t) is that affiliated thermal power plant unit i contributes in the minimum electricity of t moment after correcting.
7. according to the method described in claim 1, it is characterized in that, it is described according to the heat-accumulator tank accumulation of heat power limit, it is equivalent Load power limitation, the limitation of thermoelectricity unit climbing rate calculate the system operational parameters of the heat-accumulator tank heat-accumulating process, including：
According to heat-accumulator tank it is maximum can accumulation of heat power and corresponding thermal power plant unit heat output can the rising space the 4th ratio and heat supply The thermalization generated output adjustable range of unit and thermal power plant unit electricity contribute can the sum of the rising space the 5th ratio or described the 6th ratio of the sum of the electric output rising value of four ratios and thermalization generated output adjustable range and thermal power plant unit corrects the confession The heat of heat engine group is contributed；
The minimum electricity for correcting the thermal power plant unit with the limitation of climbing rate according to the steam extraction power of thermal power plant unit is contributed and corresponding heat goes out Power；
The amount of stored heat of minimum electric output calculation heat-accumulator tank is contributed and correspond to according to the revised heat and abandons wind power.
8. the method according to the description of claim 7 is characterized in that can accumulation of heat power and corresponding heat supply according to the maximum of heat-accumulator tank Unit heat is contributed can the 4th ratio of the rising space, the thermalization generated output adjustable range of thermal power plant unit and thermal power plant unit electricity output Can the sum of the rising space the 5th ratio or the 4th ratio and the electricity of thermalization generated output adjustable range and thermal power plant unit go out The heat that 6th ratio of the sum of power rising value corrects the thermal power plant unit is contributed, including：
Using formula
Computing system thermal power plant unit maximum heat dissolve the sum of power and pure condensate booting unit minimum load t moment value and t moment The minimum value S (t) of both equivalent loads, wherein UCHP (t) is the number set of the thermal power plant unit of t moment booting；UCON(t) For the number set of the pure condensate unit of t moment booting, Pelhmax (i) is the electricity that thermoelectricity unit i corresponds to maximum heat output Phmax It contributes；The minimum electricity that Pelmin (j) is pure condensate unit j is contributed；PDel (t) is the load of t moment electric system；Wind (t) is t The wind power at moment；PDel (t)-wind (t) is the equivalent load of t moment electric system；
Using formula
Calculate the configured heat-accumulator tank of thermal power plant unit it is maximum can the space that can rise with thermal power plant unit heat output of accumulation of heat power the Four ratio γ (i, t), wherein HS (i, t-1) is heat-accumulator tank remaining accumulation of heat after the t-1 moment of thermoelectricity unit i configurations Amount；C (i) is configured the capacity of heat-accumulator tank by thermoelectricity unit i；C (i)-HS (i, t-1) indicates the storage of i-th crew qiting of t moment The hot remaining accumulation of heat space of tank, Up (i) indicate that the maximum accumulation of heat power of the heat-accumulator tank of i-th crew qiting, Phmax (i) are heat The maximum heat of motor group i is contributed；Phs (i, t) is thermoelectricity unit i horizontal in the heat supply of t moment；U (i, t) is thermoelectricity unit i in t The startup-shutdown state at moment is worth and indicates booting for 1, is worth and indicates to shut down for 0；
If the 4th ratio is more than 1, according to formula
The thermalization generated output adjustable range of computing system and thermal power plant unit electricity contribute can the sum of the rising space the 5th ratio σ (t), wherein Pels (i, t) is that thermal power plant unit i contributes in the minimum electricity of t moment；N be the electric system in thermoelectricity unit and Total number of units of pure condensate unit；
If the 5th ratio is more than 1, it is determined that it is Pelhmax (i) that the minimum electricity of the thermal power plant unit, which is contributed, and corresponding heat is contributed For Phmax (i)；
If the 5th ratio is not more than 1, according to formula
Pel (i, t)=Pels (i, t)+σ (t) (Pelhmax (i)-Pels (i, t))
The thermal power plant unit i is calculated in the hot output Ph (i, t) of t moment and corresponding minimum electricity output Pel (i, t), wherein Cm (i), K (i) is the unit parameter of thermoelectricity unit i；
If the 4th ratio is not more than 1, according to formula
Ph (i, t)=Phs (i, t)+min (C (i)-HS (i, t-1), Up (i))
Pel (i, t)=Cm (i) Ph (i, t)+K (i) (23)
The thermal power plant unit heat output Ph (i, t) and corresponding minimum electricity output Pel (i, t) are calculated, and according to formula
Calculate the 6th ratio θ of the sum of electric output rising value of the system thermalization generated output adjustable range and thermal power plant unit (t)；
If the 6th ratio is less than 1, according to formula
Pel (i, t)=Pel (i, t)-θ (t) (Pel (i, t)-Pels (i, t))
Correct the minimum electricity output Pel (i, t) of the thermal power plant unit and corresponding hot output Ph (i, t)；
If the 6th ratio is not less than 1, the minimum electricity for not correcting the thermal power plant unit is contributed and corresponding heat is contributed.
9. the method according to the description of claim 7 is characterized in that being repaiied according to the steam extraction power of thermal power plant unit and the limitation of climbing rate The heat of the just described thermal power plant unit is contributed and corresponding minimum electricity is contributed, including：
According to formula
P (i, t)=Pel (i, t)+Cv (i) Ph (i, t) (12)
Up (i, t)=max (0, P (i, t)-P (i, t-1)) (13)
Down (i, t)=max (0, P (i, t-1)-P (i, t)) (14)
The thermal power plant unit i is calculated in the steam extraction power P (i, t) of t moment, upper climbing power up (i, t) and lower climbing power Down (i, t), wherein Cv (i) is to be extracted under unit heat supply heat when throttle flow is constant under thermoelectricity unit back pressure operation operating mode more The reduction amount of generated output；
If the upper climbing power of the thermal power plant unit steam extraction power is more than in the thermal power plant unit maximum power of climbing, according to public affairs Formula
Pel (i, t)=Cm (i) Ph (i, t)+K (i) (26)
Correct hot output Ph (i, t) and the corresponding minimum electricity output Pel (i, t) of the thermal power plant unit, wherein upramp (i) is Climb in the maximum of thermoelectricity unit i power；Cm (i), K (i) are the unit parameter of thermoelectricity unit i；
If the lower climbing power of the thermal power plant unit steam extraction power is more than under the thermal power plant unit maximum power of climbing, according to public affairs Formula
Pel (i, t)=Cm (i) Ph (i, t)+K (i) (27)
It is thermoelectricity to correct the hot output Ph (i, t) of the thermal power plant unit and minimum electricity output Pel (i, t), wherein downramp (i) Climb under the maximum of unit i power.
10. the method according to the description of claim 7 is characterized in that it is described according to the revised hot output Ph (i, t) and Corresponding minimum electricity output Pel (i, t) calculates the amount of stored heat of heat-accumulator tank and abandons wind power, including：
According to formula
It is thermoelectricity unit i that each configured heat-accumulator tank of thermoelectricity unit, which is calculated, in the amount of stored heat HS (i, t) of t moment, wherein Phs (i, t) It is horizontal in the heat supply of t moment；Ph (i, t) is to correspond to thermal power plant unit i after correcting to contribute in the heat of t moment；
According to formula
Calculate system after thermoelectricity crew qiting heat-accumulator tank abandons wind power P wab (t), and wherein PDel (t) is t moment electric system Load；Wind (t) is the wind power of t moment；PDel (t)-wind (t) is the equivalent load of t moment electric system；Pel (i, t) is to correspond to thermal power plant unit i after correcting to contribute in the minimum electricity of t moment；N is thermoelectricity unit and pure condensate in the electric system Total number of units of unit.
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