CN109461097A - A kind of electric heating association system dispatching method based on additional heating source consumption abandonment - Google Patents
A kind of electric heating association system dispatching method based on additional heating source consumption abandonment Download PDFInfo
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Abstract
The present invention provides a kind of electric heating association system dispatching method based on additional heating source consumption abandonment, is related to electric heating association system scheduling strategy technical field.Specific step is as follows by the present invention: step 1: obtain wind-powered electricity generation prediction power output in electric heating association system, cogeneration units in system electric load and thermic load, system, fired power generating unit, electric boiler and heat storage can technical parameter；Step 2: the method based on additional heating source consumption abandonment establishes electric heating association system scheduling strategy；Step 3: it is small for regulation goal with electric heating association system cost of electricity-generating, according to electric heating association system scheduling strategy, electric heating association system scheduling model is established, and solve to this scheduling model.This method can expand the adjustable range of cogeneration units, promote wind electricity digestion, guarantee the economy of electric heating association system operation.
Description
Technical field
The present invention relates to electric heating association system scheduling strategy technical fields, more particularly to a kind of dissolved based on additional heating source to abandon
The electric heating association system dispatching method of wind.
Background technique
China is maximum wind-power electricity generation market in the world now, and by the end of 2016, China's wind-power electricity generation capacity was accounted for entirely
The 35% of ball wind-power electricity generation capacity.Although the permeability of wind-powered electricity generation is increasingly enhanced, China still suffers from serious wind-force reduction and asks
Topic, especially in northern province.The major obstacle of wind electricity digestion is that the flexibility of electric system is inadequate.However, in northern China
Area, 60% or more generating set are cogeneration of heat and power (CHP) units, and in order to guarantee heating demands, cogeneration units are used
The operational mode of " electricity determining by heat ".The operational mode of cogeneration units " electricity determining by heat " has compressed wind-powered electricity generation online space, aggravation
Wind-abandoning phenomenon.
Summary of the invention
It is a kind of based on additional heat the technical problem to be solved by the present invention is in view of the above shortcomings of the prior art, provide
Source dissolves the electric heating association system dispatching method of abandonment, and this method can expand the adjustable range of cogeneration units, promotes wind-powered electricity generation
Consumption guarantees the economy of electric heating association system operation.
In order to solve the above technical problems, the technical solution used in the present invention is:
A kind of electric heating association system dispatching method based on additional heating source consumption abandonment, comprising the following steps:
Step 1: thermoelectricity in the wind-powered electricity generation prediction power output, system electric load and thermic load, system in acquisition electric heating association system
Coproduction unit, fired power generating unit, electric boiler and heat storage can technical parameter；
Step 2: the method based on additional heating source consumption abandonment establishes electric heating association system scheduling strategy；
Step 3: it is small for regulation goal with electric heating association system cost of electricity-generating, according to electric heating association system scheduling strategy, build
Vertical electric heating association system scheduling model, and this scheduling model is solved.
Step 2 the following steps are included:
Step 2.1: input electric heating association system is interior, fired power generating unit forces power output, electric heating association system electric load and heat negative
Lotus；
Step 2.2: under cogeneration units " electricity determining by heat " operational mode, it is negative that cogeneration units thermal output is equal to heat
Lotus, electricity power output areBy wind-powered electricity generation prediction power output, fired power generating unit power output, cogeneration units electricity power output in system
Judge whether that abandonment occurs with system electric load, is then to carry out step 2.3；It is no, then carry out step 2.4；
Wherein, abandonment judgement symbol are as follows:
Abandonment amount are as follows:
△ P=Ptpu+PCHP+PWF-PL
In formula, QLFor system heat load；C is the hotspot stress of cogeneration units；PCHPGo out for the electricity of cogeneration units
Power；PtpuFor the electricity power output of fired power generating unit；PWFIt predicts to contribute for wind power plant；PLFor system electric load；
Step 2.3: detection heat storage can energy state；
Step 2.3.1: judge heat storage can whether can heat release, be then to carry out step 2.3.2；It is no, then it gos to step
2.3.4；
Wherein, when the heat stored in heat storage can meetsShi Weike heat release,
In formula, SHSTIt (t) is the heat of t moment heat storage can storage；For heat storage can rated capacity；α is put for heat storage can
Hot threshold value；
Step 2.3.2: heat storage can releases heat heat supply and reduces the thermic load that cogeneration units undertake, and reduces cogeneration of heat and power
Unit electricity power output；Calculating the abandonment consumption provided after heat storage can work, spatially and thermally Electricity Federation produces the electricity power output of unit, heat power output；
Wherein, the wind electricity digestion space provided after heat storage can work are as follows:
CHP unit heat is contributed after heat storage can work are as follows:
CHP unit electricity is contributed after heat storage can work are as follows:
In formula, △ PHSTFor the wind electricity digestion space provided after heat storage can work；For heat storage can heat release power；
QCHPCHP unit heat power output before working for heat storage can；QCHP'It contributes for CHP unit heat after heat storage can work；PCHP'For heat storage can work
CHP unit electricity is contributed after work；
Step 2.3.3: heat storage can work is judged by the wind electricity digestion space that electric heating association system abandonment amount and heat storage can provide
Whether abandonment can be dissolved after work；It is that then can dissolve abandonment completely after heat storage can work, carry out step 2.6；It is no, then carry out step
2.3.4；
Wherein, whether heat storage can dissolve the judgement symbol of abandonment completely are as follows:
If abandonment cannot be dissolved after heat storage can work completely, the abandonment amount after heat storage can work:
△ P'=△ P- △ PHST
In formula, △ P' is the electric heating association system abandonment amount after heat storage can work；
Step 2.3.4: electric boiler starting；
Step 2.3.5: electric boiler consumption electric energy production thermal energy carrys out heat supply, reduces the thermic load that cogeneration units undertake,
Reduce cogeneration units electricity power output；Calculating the abandonment consumption provided after electric boiler work, spatially and thermally production unit electricity in Electricity Federation goes out
Power, heat power output and system electric load；
Wherein, the wind electricity digestion space provided after electric boiler work are as follows:
CHP unit heat is contributed after electric boiler work are as follows:
CHP unit electricity is contributed after electric boiler work are as follows:
System electric load after electric boiler work are as follows:
PL'=PL+PEB
In formula, △ PEBFor the wind electricity digestion space provided after electric boiler work；η is that electric boiler electricity turns the thermal efficiency；PEBFor electricity
Boiler electric rating；QCHP”It contributes for CHP unit heat after electric boiler work；PCHP”Go out for CHP unit electricity after electric boiler work
Power；PL' it is system electric load after electric boiler work；
Step 2.3.6: the wind electricity digestion that electric heating association system abandonment amount and electric boiler after being worked by heat storage can provide is empty
Between judge electric boiler work after whether can dissolve remaining abandonment completely, be then to carry out step 2.4；It is no, then abandonment occurs, carries out
Step 2.6；
Wherein, whether electric boiler can dissolve the judgement symbol of remaining abandonment are as follows:
If remaining abandonment cannot be dissolved after electric boiler work completely, the abandonment amount after electric boiler work:
△ P "=△ P'- △ PEB
In formula, △ P " is the electric heating association system abandonment amount after electric boiler work；
Step 2.4: detection heat storage can energy state；
Step 2.4.1: judge whether heat storage can heat accumulation；It is then to carry out step 2.4.2；It is no, then go to step 2.5；
Wherein, when the heat stored in heat storage can meetsShi Weineng heat accumulation；
In formula, β is heat storage can accumulation of heat threshold value；
Step 2.4.2: cogeneration units heat power output is improved according to the heat that heat storage can needs to store；
Step 2.4.3: heat storage can absorbs thermal energy from cogeneration units；
Step 2.4.4: electricity power output, the heat power output of cogeneration units after heat storage can storage thermal energy are calculated；
Wherein, the heat of cogeneration units is contributed after heat storage can accumulation of heat are as follows:
The heat power output of cogeneration units after heat storage can accumulation of heat are as follows:
In formula, QCHP”'It contributes for CHP unit heat after heat storage can accumulation of heat；PCHP”'Go out for CHP unit electricity after heat storage can accumulation of heat
Power；For heat storage can accumulation of heat power；
Step 2.5: according to wind-powered electricity generation prediction power output, cogeneration units electricity power output, fired power generating unit power output, system electricity in system
Load judges system power equilibrium state；If generated energy is greater than system electric load, fired power generating unit power output is reduced until electric energy is flat
Weighing apparatus；If generated energy is less than system electric load, increase fired power generating unit power output until electric energy balance；If electric energy balance, thermal motor
Group power output is constant；
Step 2.6: fired power generating unit power output and system wind-powered electricity generation prediction in next dispatching cycle at the end of with this dispatching cycle
Power output, electric load and thermic load repeat step 2.2 to step 2.5, formulate next system dispatching cycle thermoelectricity connection as input
Produce the power output plan of unit, fired power generating unit, heat storage can and electric boiler；
Electric heating association system scheduling model includes fired power generating unit cost model, cogeneration units cost in the step 3
Model and fired power generating unit start-up and shut-down costs model,
Electric heating association system scheduling model are as follows:
Wherein: fired power generating unit cost function are as follows:
Cogeneration units cost function are as follows:
Fired power generating unit start-up and shut-down costs:
Si(uti)=uti(1-u(t-1)i)si
In formula, number of segment when N is dispatching cycle in one day；△ t is the duration of a dispatching cycle；StpuFor fired power generating unit
The set of quantity；SchpFor the set of cogeneration units quantity；For the electrical power of i-th fired power generating unit of t moment output；
ai、bi、ciFor the coal-fired cost coefficient of fired power generating unit；For the electrical power of i-th cogeneration units of t moment output；For the thermal power of i-th cogeneration units of t moment output；λ0.i、λ1.i、λ2.i、λ3.i、λ4.i、λ5.iJoin for i-th thermoelectricity
Produce unit coal-burning cost coefficient；uitOperation and shutdown are respectively indicated for the start and stop state of t moment fired power generating unit i, 1,0；siFor fire
The start-up cost of motor group i.
The constraint condition of the electric heating association system scheduling model includes: electric energy balance constraint, heat supply Constraints of Equilibrium, heat accumulation
Tank operation constraint, electric boiler operation constraint, Unit Commitment Constraint, each unit output constraint, unit ramp loss.
The beneficial effects of adopting the technical scheme are that
1, the present invention establishes the electric heating connection of clear reasonable utilization additional heating source consumption abandonment in the form of implementation steps
The specific scheduling strategy of collaboration system, the coordinated scheduling for electric heating association system provide technical foundation；
2, the present invention consider occur abandonment when electric heating association system operation reserve while, it is also considered that when without abandonment by
The operation reserve of traditional electric heating association system of cogeneration units and fired power generating unit composition, increases the scheduling of electric heating association system
The reasonability of strategy；
3, the start-up and shut-down costs of fired power generating unit are included in electric heating while considering using additional heating source consumption abandonment by the present invention
Combined dispatching system economy is considered, and ensure that the economy of electric heating association system operation.
Detailed description of the invention
Fig. 1 is electric heating association system scheduling strategy flow chart provided in an embodiment of the present invention；
Fig. 2 is electric heating association system structure chart provided in an embodiment of the present invention；
Fig. 3 is the cogeneration units Electrothermal Properties curve graph after increase additional heating source provided in an embodiment of the present invention；
Fig. 4 is that wind-powered electricity generation provided in an embodiment of the present invention predicts power curve and electric load curve graph；
Fig. 5 is wind-powered electricity generation provided in an embodiment of the present invention online power contrast's curve graph.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
The method of the present embodiment is as described below:
A kind of electric heating association system dispatching method based on additional heating source consumption abandonment, comprising the following steps:
Step 1: thermoelectricity in the wind-powered electricity generation prediction power output, system electric load and thermic load, system in acquisition electric heating association system
Coproduction unit, fired power generating unit, electric boiler and heat storage can technical parameter；
The technical parameter include: online group of maximum power generation of thermoelectricity, minimum generated output, maximum heating power, to
Upper creep speed, downward creep speed, coal-fired cost coefficient, hotspot stress.Fired power generating unit maximum power generation, minimum power generation function
Rate, upward creep speed, downward creep speed, coal-fired cost coefficient.Electric boiler electric rating, electricity turn the thermal efficiency.Heat storage can
Maximum heat storage capacity, maximum discharge/charge thermal power, the hot threshold value of charge and discharge.
Wherein, electric heating association system structure chart is as shown in Fig. 2, include Wind turbines, fired power generating unit, cogeneration of heat and power in system
Unit, electric boiler and heat storage can；Load containing two kinds of forms of electric load and thermic load in system.
Step 2: the method based on additional heating source consumption abandonment establishes electric heating association system scheduling strategy；
Wherein, the method based on additional heating source consumption abandonment is as shown in Figure 3；AD sections represent the work of thermoelectricity unit in pure condensate work
Condition, unit is completely used for generating electricity without heat supply steam extraction into vapour under pure condensate operating condition.AB and DC sections for etc. into vapour operating condition, into
In the case that vapour is constant, unit heat supply steam extraction is more multiple, and electricity is fewer.CvTo increase unit heat supply under minimum and maximum throttle flow
The decreasing value of generated energy when steam extraction.The back pressure operating condition of BC sections of corresponding units, unit is completely used for heat supply, electric thermal power into vapour at this time
It is linear to use CmIt indicates.Under " electricity determining by heat " operational mode, cogeneration units electricity power output and heat power output exist
Coupled relation, in the case where no additional heating source, when system heat load is QtWhen, the electricity power output of cogeneration units can be in PF
~PESection is adjusted, after additional heating source is added, if the heat power output of additional heating source is Qs, then undertaken needed for cogeneration units
Thermic load is Qt-Qs, it can be seen from the figure that the electricity power output range of cogeneration units is PH~PG.Additional heat is added in system
The electricity power output range of cogeneration units increases behind source, this provides space for wind-powered electricity generation online.
As shown in Figure 1, the specific steps are as follows:
Step 2.1: input electric heating association system is interior, fired power generating unit forces power output, electric heating association system electric load and heat negative
Lotus；
Wherein, it is reserved 8%~10% on the basis of fired power generating unit minimum technology power output that fired power generating unit, which forces power output,
What unit spinning reserve was formed.
Step 2.2: under cogeneration units " electricity determining by heat " operational mode, it is negative that cogeneration units thermal output is equal to heat
Lotus, electricity power output areBy wind-powered electricity generation prediction power output, fired power generating unit power output, cogeneration units electricity power output in system
Judge whether that abandonment occurs with system electric load, is then to carry out step 2.3；It is no, then carry out step 2.4；
Wherein, abandonment judgement symbol are as follows:
Abandonment amount are as follows:
△ P=Ptpu+PCHP+PWF-PL
In formula, QLFor system heat load；C is the hotspot stress of cogeneration units；PCHPGo out for the electricity of cogeneration units
Power；PtpuFor the electricity power output of fired power generating unit；PWFIt predicts to contribute for wind power plant；PLFor system electric load；
Step 2.3: detection heat storage can energy state；
Step 2.3.1: judge heat storage can whether can heat release, be then to carry out step 2.3.2, it is no, then go to step
2.3.4；
Wherein, when the heat stored in heat storage can meetsShi Weike heat release,
In formula, SHSTIt (t) is the heat of t moment heat storage can storage；For heat storage can rated capacity；α is put for heat storage can
Hot threshold value is determined by the technical parameter of heat storage can；
Step 2.3.2: heat storage can releases heat heat supply and reduces the thermic load that cogeneration units undertake, and reduces cogeneration of heat and power
Unit electricity power output；Calculating the abandonment consumption provided after heat storage can work, spatially and thermally Electricity Federation produces the electricity power output of unit, heat power output；
Wherein, the wind electricity digestion space provided after heat storage can work are as follows:
CHP unit heat is contributed after heat storage can work are as follows:
CHP unit electricity is contributed after heat storage can work are as follows:
In formula, △ PHSTFor the wind electricity digestion space provided after heat storage can work；For heat storage can heat release power；
QCHPCHP unit heat power output before working for heat storage can；QCHP'It contributes for CHP unit heat after heat storage can work；PCHP'For heat storage can work
CHP unit electricity is contributed after work；
Step 2.3.3: heat storage can work is judged by the wind electricity digestion space that electric heating association system abandonment amount and heat storage can provide
Whether abandonment can be dissolved after work；It is that then can dissolve abandonment completely after heat storage can work, carry out step 2.6；It is no, then carry out step
2.3.4；
Wherein, whether heat storage can dissolve the judgement symbol of abandonment completely are as follows:
If abandonment cannot be dissolved after heat storage can work completely, the abandonment amount after heat storage can work:
△ P'=△ P- △ PHST
In formula, △ P' is the electric heating association system abandonment amount after heat storage can work；
Step 2.3.4: electric boiler starting；
Step 2.3.5: electric boiler consumption electric energy production thermal energy carrys out heat supply, reduces the thermic load that cogeneration units undertake,
Reduce cogeneration units electricity power output；Calculating the abandonment consumption provided after electric boiler work, spatially and thermally production unit electricity in Electricity Federation goes out
Power, heat power output and system electric load；
Wherein, the wind electricity digestion space provided after electric boiler work are as follows:
CHP unit heat is contributed after electric boiler work are as follows:
CHP unit electricity is contributed after electric boiler work are as follows:
System electric load after electric boiler work are as follows:
PL'=PL+PEB
In formula, △ PEBFor the wind electricity digestion space provided after electric boiler work；η is that electric boiler electricity turns the thermal efficiency；PEBFor electricity
Boiler electric rating；QCHP”It contributes for CHP unit heat after electric boiler work；PCHP”Go out for CHP unit electricity after electric boiler work
Power；PL' it is system electric load after electric boiler work；
Step 2.3.6: the wind electricity digestion that electric heating association system abandonment amount and electric boiler after being worked by heat storage can provide is empty
Between judge electric boiler work after whether can dissolve remaining abandonment completely, be then to carry out step 2.4；It is no, then abandonment occurs, carries out
Step 2.6；
Wherein, whether electric boiler can dissolve the judgement symbol of remaining abandonment are as follows:
If remaining abandonment cannot be dissolved after electric boiler work completely, the abandonment amount after electric boiler work:
△ P "=△ P'- △ PEB
In formula, △ P " is the electric heating association system abandonment amount after electric boiler work；
Step 2.4: detection heat storage can energy state；
Step 2.4.1: judge whether heat storage can heat accumulation；It is then to carry out step 2.4.2；It is no, then go to step 2.5；
Wherein, when the heat stored in heat storage can meetsShi Weineng heat accumulation；
In formula, β is heat storage can accumulation of heat threshold value, is determined by the technical parameter of heat storage can；
Step 2.4.2: cogeneration units heat power output is improved according to the heat that heat storage can needs to store；
Step 2.4.3: heat storage can absorbs thermal energy from cogeneration units；
Step 2.4.4: electricity power output, the heat power output of cogeneration units after heat storage can storage thermal energy are calculated；
Wherein, the heat of cogeneration units is contributed after heat storage can accumulation of heat are as follows:
The heat power output of cogeneration units after heat storage can accumulation of heat are as follows:
In formula, QCHP”'It contributes for CHP unit heat after heat storage can accumulation of heat；PCHP”'Go out for CHP unit electricity after heat storage can accumulation of heat
Power；For heat storage can accumulation of heat power；
Step 2.5: according to wind-powered electricity generation prediction power output, cogeneration units electricity power output, fired power generating unit power output, system electricity in system
Load judges system power equilibrium state；If generated energy is greater than system electric load, fired power generating unit power output is reduced until electric energy is flat
Weighing apparatus；If generated energy is less than system electric load, increase fired power generating unit power output until electric energy balance；If electric energy balance, thermal motor
Group power output is constant；
Wherein, after cogeneration units electricity power output increases, it is standby will to serve as system by fired power generating unit for system power not rebalancing
With.If electric energy is superfluous, reduces fired power generating unit power output or even part fired power generating unit is shut down；If electric energy is insufficient, increase fire
Electric unit output.
Step 2.6: fired power generating unit power output and system wind-powered electricity generation prediction in next dispatching cycle at the end of with this dispatching cycle
Power output, electric load and thermic load repeat step 2.2 to step 2.5, formulate next system dispatching cycle thermoelectricity connection as input
Produce the power output plan of unit, fired power generating unit, heat storage can and electric boiler；
Step 3: with the minimum regulation goal of electric heating association system cost of electricity-generating, according to electric heating association system scheduling strategy,
Electric heating association system scheduling model is established, and this scheduling model is solved；Electric heating association system scheduling model are as follows:
Wherein: fired power generating unit cost function are as follows:
Cogeneration units cost function are as follows:
Fired power generating unit start-up and shut-down costs:
Si(uti)=uti(1-u(t-1)i)si
In formula, number of segment when N is dispatching cycle in one day；△ t is the duration of a dispatching cycle；StpuFor fired power generating unit
The set of quantity；SchpFor the set of cogeneration units quantity；For the electrical power of i-th fired power generating unit of t moment output；
ai、bi、ciFor the coal-fired cost coefficient of fired power generating unit；For the electrical power of i-th cogeneration units of t moment output；For the thermal power of i-th cogeneration units of t moment output；λ0.i、λ1.i、λ2.i、λ3.i、λ4.i、λ5.iJoin for i-th thermoelectricity
Produce unit coal-burning cost coefficient；uitOperation and shutdown are respectively indicated for the start and stop state of t moment fired power generating unit i, 1,0；siFor fire
The start-up cost of motor group i.
Wherein, since system power may be superfluous, at this moment part fired power generating unit may need to shut down, and work as system power not
When sufficient, the fired power generating unit of shutdown may need to restart, therefore consider that fired power generating unit opens in electric heating association system scheduling model
Stop cost；And cogeneration units need to undertake always thermic load, therefore cogeneration units have been at working condition.
The constraint condition of the electric heating association system scheduling model includes: electric energy balance constraint, heat supply Constraints of Equilibrium, heat accumulation
Tank operation constraint, electric boiler operation constraint, Unit Commitment Constraint, each unit output constraint, unit ramp loss.
It include two fired power generating units and 6 cogeneration units in the present embodiment, system configuration maximum power is 200MW's
Electric boiler and maximum storage system power are 100MW, and maximum heat storage capacity is the heat-storing device of 1000MW h, it is assumed that this is in a few days hot
Load does not change (being 900MW) substantially.Scheduling slot number T=24, unit scheduling time Δ t=1h.Cogeneration of heat and power machine
Group design parameter is as shown in table 1:
1 cogeneration units parameter of table
Cogeneration units design parameter is as shown in table 2:
2 fired power generating unit parameter of table
Wind-powered electricity generation predicts force curve in the present embodiment and electric load curve is as shown in Figure 4；
It is tactful that the present embodiment comparative analysis considers that wind-powered electricity generation online power after the mentioned strategy of the present invention and do not consider mentions
The scheduling result of wind-powered electricity generation online power, as shown in table 3 and Fig. 5 it is found that after using the scheduling strategy of the invention mentioned, system call
Cost has dropped 8.6 ten thousand yuan, and wind electricity digestion amount increases 83MWh, it is seen then that the mentioned strategy of the present invention may advantageously facilitate wind electricity digestion；
Scheduling result comparison under 3 different running method of table
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous embodiment, or some or all of the technical features are equal
Replacement；And these are modified or replaceed, model defined by the claims in the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (4)
1. a kind of electric heating association system dispatching method based on additional heating source consumption abandonment, it is characterised in that: the following steps are included:
Step 1: cogeneration of heat and power in the wind-powered electricity generation prediction power output, system electric load and thermic load, system in acquisition electric heating association system
Unit, fired power generating unit, electric boiler and heat storage can technical parameter；
Step 2: the method based on additional heating source consumption abandonment establishes electric heating association system scheduling strategy；
Step 3: it is small for regulation goal with electric heating association system cost of electricity-generating, electric heating is established according to electric heating association system scheduling strategy
Association system scheduling model, and this scheduling model is solved.
2. a kind of electric heating association system dispatching method based on additional heating source consumption abandonment according to claim 1, special
Sign is: the step 2 the following steps are included:
Step 2.1: input electric heating association system is interior, fired power generating unit forces power output, electric heating association system electric load and thermic load；
Step 2.2: under cogeneration units " electricity determining by heat " operational mode, cogeneration units thermal output is equal to thermic load,
Its electricity, which is contributed, isBy in system wind-powered electricity generation prediction power output, fired power generating unit power output, cogeneration units electricity power output and
System electric load judges whether that abandonment occurs, and is then to carry out step 2.3；It is no, then carry out step 2.4；
Wherein, abandonment judgement symbol are as follows:
Abandonment amount are as follows:
△ P=Ptpu+PCHP+PWF-PL
In formula, QLFor system heat load；C is the hotspot stress of cogeneration units；PCHPFor the electricity power output of cogeneration units；Ptpu
For the electricity power output of fired power generating unit；PWFIt predicts to contribute for wind power plant；PLFor system electric load；
Step 2.3: detection heat storage can energy state；
Step 2.3.1: judge heat storage can whether can heat release, be then to carry out step 2.3.2；No, then go to step 2.3.4；
Wherein, when the heat stored in heat storage can meetsShi Weike heat release,
In formula, SHSTIt (t) is the heat of t moment heat storage can storage；For heat storage can rated capacity；α is heat storage can heat release threshold
Value；
Step 2.3.2: heat storage can releases heat heat supply and reduces the thermic load that cogeneration units undertake, and reduces cogeneration units
Electricity power output；Calculating the abandonment consumption provided after heat storage can work, spatially and thermally Electricity Federation produces the electricity power output of unit, heat power output；
Wherein, the wind electricity digestion space provided after heat storage can work are as follows:
CHP unit heat is contributed after heat storage can work are as follows:
CHP unit electricity is contributed after heat storage can work are as follows:
In formula, △ PHSTFor the wind electricity digestion space provided after heat storage can work；For heat storage can heat release power；QCHPFor
CHP unit heat power output before heat storage can works；QCHP'It contributes for CHP unit heat after heat storage can work；PCHP'After heat storage can work
CHP unit electricity power output；
Step 2.3.3: after judging heat storage can work by the wind electricity digestion space that electric heating association system abandonment amount and heat storage can provide
Whether abandonment can be dissolved；It is that then can dissolve abandonment completely after heat storage can work, carry out step 2.6；It is no, then carry out step
2.3.4；
Wherein, whether heat storage can dissolve the judgement symbol of abandonment completely are as follows:
If abandonment cannot be dissolved after heat storage can work completely, the abandonment amount after heat storage can work:
△ P'=△ P- △ PHST
In formula, △ P' is the electric heating association system abandonment amount after heat storage can work；
Step 2.3.4: electric boiler starting；
Step 2.3.5: electric boiler consumption electric energy production thermal energy carrys out heat supply, reduces the thermic load that cogeneration units undertake, and reduces
Cogeneration units electricity power output；Calculating the abandonment consumption provided after electric boiler work, spatially and thermally Electricity Federation produces unit electricity power output, heat
Power output and system electric load；
Wherein, the wind electricity digestion space provided after electric boiler work are as follows:
CHP unit heat is contributed after electric boiler work are as follows:
QCHP”=QCHP'-ηPEB
CHP unit electricity is contributed after electric boiler work are as follows:
System electric load after electric boiler work are as follows:
PL'=PL+PEB
In formula, △ PEBFor the wind electricity digestion space provided after electric boiler work；η is that electric boiler electricity turns the thermal efficiency；PEBFor electric boiler
Electric rating；QCHP”It contributes for CHP unit heat after electric boiler work；PCHP”It contributes for CHP unit electricity after electric boiler work；PL'
For system electric load after electric boiler work；
Step 2.3.6: sentence in the wind electricity digestion space that electric heating association system abandonment amount and electric boiler after being worked by heat storage can provide
Whether remaining abandonment can be dissolved completely after power-off boiler work, be then to carry out step 2.4；It is no, then abandonment occurs, carries out step
2.6；
Wherein, whether electric boiler can dissolve the judgement symbol of remaining abandonment are as follows:
If remaining abandonment cannot be dissolved after electric boiler work completely, the abandonment amount after electric boiler work:
△ P "=△ P'- △ PEB
In formula, △ P " is the electric heating association system abandonment amount after electric boiler work；
Step 2.4: detection heat storage can energy state；
Step 2.4.1: judge whether heat storage can heat accumulation；It is then to carry out step 2.4.2；It is no, then go to step 2.5；
Wherein, when the heat stored in heat storage can meetsShi Weineng heat accumulation；
In formula, β is heat storage can accumulation of heat threshold value；
Step 2.4.2: cogeneration units heat power output is improved according to the heat that heat storage can needs to store；
Step 2.4.3: heat storage can absorbs thermal energy from cogeneration units；
Step 2.4.4: electricity power output, the heat power output of cogeneration units after heat storage can storage thermal energy are calculated；
Wherein, the heat of cogeneration units is contributed after heat storage can accumulation of heat are as follows:
The heat power output of cogeneration units after heat storage can accumulation of heat are as follows:
In formula, QCHP”'It contributes for CHP unit heat after heat storage can accumulation of heat；PCHP”'It contributes for CHP unit electricity after heat storage can accumulation of heat；For heat storage can accumulation of heat power；
Step 2.5: according to wind-powered electricity generation prediction power output, cogeneration units electricity power output, fired power generating unit power output, system electric load in system
Judge system power equilibrium state；If generated energy is greater than system electric load, fired power generating unit power output is reduced until electric energy balance；If
Generated energy is less than system electric load, then increases fired power generating unit power output until electric energy balance；If electric energy balance, fired power generating unit power output
It is constant；
Step 2.6: at the end of with this dispatching cycle fired power generating unit power output and next dispatching cycle in system wind-powered electricity generation prediction power output,
Electric load and thermic load repeat step 2.2 to step 2.5, formulate next system dispatching cycle cogeneration of heat and power machine as input
The power output plan of group, fired power generating unit, heat storage can and electric boiler.
3. a kind of electric heating association system dispatching method based on additional heating source consumption abandonment according to claim 1, special
Sign is: electric heating association system scheduling model includes fired power generating unit cost model, cogeneration units cost mould in the step 3
Type and fired power generating unit start-up and shut-down costs model,
Electric heating association system scheduling model are as follows:
Wherein: fired power generating unit cost function are as follows:
Cogeneration units cost function are as follows:
Fired power generating unit start-up and shut-down costs:
Si(uti)=uti(1-u(t-1)i)si
In formula, number of segment when N is dispatching cycle in one day；△ t is the duration of a dispatching cycle；StpuFor the quantity of fired power generating unit
Set；SchpFor the set of cogeneration units quantity；For the electrical power of i-th fired power generating unit of t moment output；ai、
bi、ciFor the coal-fired cost coefficient of fired power generating unit；For the electrical power of i-th cogeneration units of t moment output；For
The thermal power of i-th cogeneration units of t moment output；λ0.i、λ1.i、λ2.i、λ3.i、λ4.i、λ5.iFor i-th cogeneration units
Coal-fired cost coefficient；uitOperation and shutdown are respectively indicated for the start and stop state of t moment fired power generating unit i, 1,0；siFor fired power generating unit i
Start-up cost.
4. a kind of electric heating association system dispatching method based on additional heating source consumption abandonment according to claim 1 or 3,
Be characterized in that: the constraint condition of the electric heating association system scheduling model includes: electric energy balance constraint, heat supply Constraints of Equilibrium, storage
Hot tank operation constraint, electric boiler operation constraint, Unit Commitment Constraint, each unit output constraint, unit ramp loss.
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