CN108258721A - Wind electricity digestion capability acquisition methods and system under a kind of unit safety constraint - Google Patents
Wind electricity digestion capability acquisition methods and system under a kind of unit safety constraint Download PDFInfo
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- CN108258721A CN108258721A CN201711487960.5A CN201711487960A CN108258721A CN 108258721 A CN108258721 A CN 108258721A CN 201711487960 A CN201711487960 A CN 201711487960A CN 108258721 A CN108258721 A CN 108258721A
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Abstract
The present invention provides wind electricity digestion capability acquisition methods and system under a kind of unit safety constraint, the method includes：It is switched under constraints in unit safety, obtains the minimum load of unit；Timing acquisition power grid supply load to be assessed and interconnection injection data, obtain the load power demand of power grid to be assessed；According to the load power demand and unit minimum load, obtain wind electricity digestion power and abandon wind power；According to the wind electricity digestion power obtain day wind electricity digestion electricity, according to it is described abandon wind power acquisition abandon wind-powered electricity generation amount day.In the case where heating period unit safety is switched on constraints, thermal power plant unit ensures standard-sized sheet, take thermal power plant unit and carry out start-stop according to practical sculpture arrangement, determine the minimum start-up mode of unit, and determine the minimum load of unit, air quantity and consumption amount are abandoned by what the method for time stimulatiom calculated warm season wind-powered electricity generation, is analyzed so as to abandon landscape condition to warm season.
Description
Technical field
The present invention relates to wind electricity digestion capability analysis technical field, more particularly, under a kind of constraint of unit safety
Wind electricity digestion capability acquisition methods and system.
Background technology
In recent years, China's installed capacity of wind-driven power was stepped up.With the conventional power generation usages mode phase such as hydroelectric generation, thermal power generation
Than the most basic difference of wind-power electricity generation is the randomness, intermittence and uncontrollability of its active power output.Wind power generating set
Contribute significantly different from conventional hydroelectric generation or thermal power generation unit, reason is that wind power plant is typically by multiple small amounts
Wind turbine forms, and the output of entire wind power plant is influenced by many factors such as wind speed, wind direction, wake effects, i.e., entirely
The contribute accumulation process that cannot simply contribute according to multiple small amount blower fan groups, in addition to this, wind power output of wind power plant
Also there is very big fluctuation.In order to maintain the normal operation of electric system, when wind-electricity integration is run, it is necessary to by other routines
Generation mode provides compensation adjustment for its active power output, with ensure it is lasting, reliable to power load, safely power.It is this right
The compensation adjustment of wind-powered electricity generation active power output is considered as the tracking to negative load fluctuation, i.e., to wind-powered electricity generation " peak regulation ".
The peak modulation capacity of electric system is mainly determined by characteristics such as power supply, loads.After wind-powered electricity generation large-scale grid connection, electric power
Larger variation has occurred in system performance, and the peak modulation capacity that can be provided needs to do corresponding adjustment.Before wind-electricity integration operation,
The peak regulation task of power grid mainly under the premise of meeting necessary safety and spending in advance, copes with the load fluctuation of system.Wind-electricity integration
After operation, randomness, the intermittence of wind-powered electricity generation will bring larger impact to power system operating mode and peak-load regulating, need to consider that wind-powered electricity generation goes out
The many factors such as force characteristic, the restriction of normal grid equipment level, system load characteristic.In addition, if grid connected wind power is more than power grid
Can be the peak regulation limit that wind-powered electricity generation provides, power grid will be difficult to balance wind power output, and so as to cause frequency out-of-limit, electricity will be caused when serious
Net off-the-line.Therefore, the power grid wind electricity digestion capability after research large-scale wind power is grid-connected, for instructing wind-powered electricity generation orderly development that there is weight
Want meaning.
China's wind-resources are concentrated, scale is big, but far from load center, it is difficult to on-site elimination.Moreover, " the three of wind-powered electricity generation concentration
The regional wind-powered electricity generation installation in north " (North China, northeast and northwest) accounts for the total wind-powered electricity generation installation 76% in China, be China's installed capacity of wind-driven power accounting most
Big area.However, with the increase of wind-powered electricity generation installation scale, wind-abandoning phenomenon is also increasingly severe.The digestion capability of wind-powered electricity generation is by electricity
Source structure, part throttle characteristics, the limitation of electrical grid transmission channel and the influence of wind-powered electricity generation characteristic.It is frequently appeared in when wind electricity digestion is most difficult
During the evening in winter, the especially Spring Festival.These period load values are very low, and in order to meet heat demand, thermal power plant unit " with
The mode of production of the fixed electricity of heat " so that thermal power plant unit output cannot reduce.So it is an extremely urgent thing to promote wind electricity digestion
Feelings.
Invention content
The present invention provides a kind of a kind of unit safety for overcoming the above problem or solving the above problems at least partly about
Wind electricity digestion capability acquisition methods and system under beam solve wind electricity digestion capability calculating electricity determining by heat in the prior art, suddenly
It omits wind electricity digestion electricity and abandons wind-powered electricity generation amount so that the problem of thermal power plant unit capacity can not reduce.
According to an aspect of the present invention, a kind of wind electricity digestion capability acquisition methods are provided, including：
It is switched under constraints in unit safety, obtains the minimum load of unit；Timing acquisition power grid power supply to be assessed is negative
Lotus and interconnection injection data, obtain the load power demand of power grid to be assessed；
According to the load power demand and unit minimum load, obtain wind electricity digestion power and abandon wind power；According to institute
State wind electricity digestion power obtain day wind electricity digestion electricity, according to it is described abandon wind power acquisition abandon wind-powered electricity generation amount day.
As preference, timing acquisition power grid supply load to be assessed and interconnection injection data, obtain power grid to be assessed
Load power demand, specifically include：
Often it is separated by setting time value, obtains primary power grid supply load data to be assessed and interconnection transmission power data,
Load power demand is obtained based on the supply load data and the interconnection transmission power data.
As preference, the setting time value is 15 minutes.
It is under the unit safety booting constraints：
Ensure thermal power plant unit standard-sized sheet, minimum load and non-heating period of the setting thermal power plant unit in heating period in heating period
Minimum load；
The start-stop scheduler task of non-thermal power plant unit is set, and non-heat supply coal unit minimum load, non-heat supply is set separately
Gas Generator Set minimum load, water-storage factory minimum load and hydroelectric power plant's minimum load；
According to above-mentioned constraint, the minimum start-up mode of unit is determined, and obtain the minimum load of unit.
As preference, according to the load power demand and unit minimum load, obtain wind electricity digestion power and specifically wrap
It includes：
If the load power demand is less than unit minimum load, the wind electricity digestion power is zero；
If the load power demand and the difference of the unit minimum load are more than wind power output power not less than zero,
Then the wind electricity digestion power goes out activity of force equal to the risk；
If the load power demand and the difference of the unit minimum load are more than wind power output power, the wind-powered electricity generation disappears
Power of receiving is equal to the load power demand and the difference of the unit minimum load.
As preference, the difference for abandoning wind power as the wind power output power and the wind electricity digestion power.
As preference, the day wind electricity digestion electricity is：
The day abandons wind-powered electricity generation amount：
In formula, Pwin.conFor wind electricity digestion power, Pwin.abanTo abandon wind power, k represents k-th of the wind-powered electricity generation acquired in one day
Power is dissolved, n represents that is acquired in one day abandons wind power n-th.
As preference, it further includes：
Obtain year wind electricity digestion electricity：
Wind-powered electricity generation amount is abandoned in acquisition year：
In formula, N is year warm season number of days, and i represents the day wind electricity digestion amount of i-th day in warm season, and j represents in warm season the
The day of j days abandons wind-powered electricity generation amount.
A kind of wind electricity digestion capability obtains system, including：
Data acquisition module is switched in unit safety under constraints, obtains the minimum load of unit；Timing acquisition is to be evaluated
Estimate power grid supply load and interconnection injection data, obtain the load power demand of power grid to be assessed；
Wind electricity digestion capability acquisition module, for according to the load power demand and unit minimum load, obtaining wind-powered electricity generation
It dissolves power and abandons wind power；Day wind electricity digestion electricity is obtained according to the wind electricity digestion power, is obtained according to the wind power of abandoning
It obtains and abandons wind-powered electricity generation amount day.
As preference, the wind electricity digestion capability acquisition module includes wind electricity digestion power cell, the wind electricity digestion
Power cell is used to, according to the load power demand and unit minimum load, obtain wind electricity digestion power：
If the load power demand is less than unit minimum load, the wind electricity digestion power is zero；
If the load power demand and the difference of the unit minimum load are more than wind power output power not less than zero,
Then the wind electricity digestion power goes out activity of force equal to the risk；
If the load power demand and the difference of the unit minimum load are more than wind power output power, the wind-powered electricity generation disappears
Power of receiving is equal to the load power demand and the difference of the unit minimum load.
The present invention proposes wind electricity digestion capability acquisition methods and system under a kind of unit safety constraint, in heating period unit
Under safety opening terminal constraints, thermal power plant unit ensures standard-sized sheet, takes thermal power plant unit and carries out start-stop according to practical sculpture arrangement, determines machine
The minimum start-up mode of group, and determine the minimum load of unit, abandoning for warm season wind-powered electricity generation is calculated by the method for time stimulatiom
Air quantity and consumption amount, are analyzed so as to abandon landscape condition to warm season.
Description of the drawings
Fig. 1 is the wind electricity digestion capability acquisition methods flow chart according to the embodiment of the present invention；
Fig. 2 is to compare situation curve graph with unit minimum load according to the load of the embodiment of the present invention 1；
Fig. 3 is to abandon landscape condition curve graph according to the embodiment of the present invention 1；
Fig. 4 is to abandon wind-powered electricity generation amount block diagram according to the daily of the embodiment of the present invention 1；
Fig. 5 is to compare situation curve graph with unit minimum load according to the load of the embodiment of the present invention 2；
Fig. 6 is to abandon landscape condition curve graph according to the embodiment of the present invention 2；
Fig. 7 is to abandon wind-powered electricity generation amount block diagram according to the daily of the embodiment of the present invention 2；
Fig. 8 is to compare situation curve graph with unit minimum load according to the load of the embodiment of the present invention 3；
Fig. 9 is to abandon landscape condition curve graph according to the embodiment of the present invention 3；
Figure 10 is to abandon wind-powered electricity generation amount block diagram according to the daily of the embodiment of the present invention 3；
Figure 11 is to compare situation curve graph with unit minimum load according to the load of the embodiment of the present invention 4；
Figure 12 is to abandon landscape condition curve graph according to the embodiment of the present invention 4；
Figure 13 is to abandon wind-powered electricity generation amount block diagram according to the daily of the embodiment of the present invention 4；
Figure 14 is to compare situation curve graph with unit minimum load according to the load of the embodiment of the present invention 5；
Figure 15 is to abandon landscape condition curve graph according to the embodiment of the present invention 5；
Figure 16 is to abandon wind-powered electricity generation amount block diagram according to the daily of the embodiment of the present invention 5；
Figure 17 is to compare block diagram with simulation value according to the air quantity actual value of abandoning of the embodiment of the present invention；
Figure 18 is to compare block diagram with simulation value according to the wind electricity digestion amount actual value of the embodiment of the present invention；
Figure 19 is to compare block diagram with simulation value according to the wind rate actual value of abandoning of the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but be not limited to the scope of the present invention.
As shown in Figure 1, a kind of wind electricity digestion capability acquisition methods are shown in figure, including：
It is switched under constraints in unit safety, obtains the minimum load of unit；Timing acquisition power grid power supply to be assessed is negative
Lotus and interconnection injection data, obtain the load power demand of power grid to be assessed；Often it is separated by setting time value, obtains primary to be evaluated
Power grid supply load data and interconnection transmission power data are estimated, based on the supply load data and interconnection conveying work(
Rate data obtain load power demand.
According to the load power demand and unit minimum load, obtain wind electricity digestion power and abandon wind power；According to institute
State wind electricity digestion power obtain day wind electricity digestion electricity, according to it is described abandon wind power acquisition abandon wind-powered electricity generation amount day.
If the load power demand is less than unit minimum load, the wind electricity digestion power is zero；
If the load power demand and the difference of the unit minimum load are more than wind power output power not less than zero,
Then the wind electricity digestion power goes out activity of force equal to the risk；
If the load power demand and the difference of the unit minimum load are more than wind power output power, the wind-powered electricity generation disappears
Power of receiving is equal to the load power demand and the difference of the unit minimum load.
Specifically, wind electricity digestion power is expressed as by formula：
In formula, Pload.inFor load power demand, PG.minFor unit minimum load, Pwin.conFor wind electricity digestion power, Pwin
For wind power output power.
It is under the unit safety booting constraints：
Ensure thermal power plant unit standard-sized sheet, minimum load and non-heating period of the setting thermal power plant unit in heating period in heating period
Minimum load；
The start-stop scheduler task of non-thermal power plant unit is set, and non-heat supply coal unit minimum load, non-heat supply is set separately
Gas Generator Set minimum load, water-storage factory minimum load and hydroelectric power plant's minimum load；
According to above-mentioned constraint, the minimum start-up mode of unit is determined, and obtain the minimum load of unit.
Specifically, under the constraint for considering unit safety booting, the start-up mode in heating period unit is determined, so that it is determined that
The minimum output of unit；Wherein, unit safety booting constraint is as follows：
Thermal power plant unit ensures standard-sized sheet：It is 70% that the booting of heating period thermal power plant unit minimum, which is contributed,；Heating period remaining time heat supply
It is 65% that the booting of unit minimum, which is contributed,；
Non- thermal power plant unit carries out start-stop according to actual schedule arrangement：Non- heat supply coal unit minimum load is 50%；Non- confession
Hot combustion gas unit minimum load is 60%；Water-storage factory minimum load considers according to -100%；Hydroelectric power plant's minimum load is according to 0
Consider；
Daily unit booting will consider that there are the backspin of 800MW is spare.
According to the constraints that more than unit safety is switched on, the minimum start-up mode of unit is determined, so that it is determined that unit
Minimum output.
Abandoning wind rating formula is：
Pwin.aban=Pwin-Pwin.con
It was calculated every 15 minutes once, specifically, the day wind electricity digestion electricity is：
The day abandons wind-powered electricity generation amount：
In formula, Pwin be wind power output power, Pwin.conFor wind electricity digestion power, Pwin.abanTo abandon wind power, k represents one
K-th of the wind electricity digestion power in a few days acquired, acquires altogether 96 wind electricity digestion power daily, and n represents acquired in one day n-th
A to abandon wind power, acquiring 96 abandons wind power altogether daily.
Specifically, it further includes：
Obtain year wind electricity digestion electricity：
Wind-powered electricity generation amount is abandoned in acquisition year：
In formula, N is year warm season number of days, and i represents the day wind electricity digestion amount of i-th day in warm season, and j represents in warm season the
The day of j days abandons wind-powered electricity generation amount.
Embodiment 1
Beijing-Tianjin-Tangshan in January, 2016 wind electricity digestion situation analysis：
Under the constraints that unit safety booting is considered it can be seen from Fig. 2-4, one was done for a period with 15 minutes
It is secondary relatively to test, 2976 verifications have been done to January, have there is the minimum that 285 (accounting 11.2%) load values are less than unit under security constraint
It contributes, so as to abandon wind completely；There are 805 consumption part wind-powered electricity generations (accounting 27.5%)；Wind-powered electricity generation can be dissolved completely 1886 times by, which having, (accounts for
Than 63.4%).
January all abandons the wind period in the presence of part daily, and it is 31 days to abandon wind number of days, and the wind-powered electricity generation amount of always abandoning in January is
578013MWh, total wind electricity digestion electricity are 1629283MWh.
Embodiment 2
Beijing-Tianjin-Tangshan wind electricity digestion situation analysis in 2 months in 2016：
Consider it can be seen from Fig. 5-7 under unit safety booting constraints, done once for a period with 15 minutes
2784 verifications have been done 2 months in verification, have the minimum that 830 (accounting 29.8%) load values are less than unit under security constraint to go out
Power, so as to abandon wind completely；There are 1063 consumption part wind-powered electricity generations (accounting 38.2%)；Wind-powered electricity generation (accounting can be dissolved completely by having 891 times
32%).
For 2 months, the large percentage of landscape condition appearance is abandoned, during being primarily due to the Spring Festival, electricity consumption reduces, electric system
Peak regulation pressure becomes larger, so as to cause a large amount of wind-abandoning phenomenons.All the wind period is abandoned in the presence of part within 2 months daily, it is 29 days to abandon wind number of days,
2 months always abandoned wind-powered electricity generation amount as 1180006MWh, and total wind electricity digestion electricity is 1179059MWh.
Embodiment 3
Beijing-Tianjin-Tangshan in March, 2016 wind electricity digestion situation analysis：
Under the constraints that unit safety booting is considered it can be seen from Fig. 8-10, done with 15 minutes for a period
It once relatively tests, 1440 verifications has been done to March, there is the minimum that 66 (accounting 4.6%) load values are less than unit under security constraint
It contributes, so as to abandon wind completely；There are 412 consumption part wind-powered electricity generations (accounting 28.6%)；Wind-powered electricity generation can be dissolved completely 962 times by, which having, (accounts for
Than 66.8%).
March all abandons the wind period in the presence of part daily, and it is 15 days to abandon wind number of days, and the wind-powered electricity generation amount of always abandoning in March is
240331MWh, total wind electricity digestion electricity are 952102.3MWh.
Embodiment 4
Beijing-Tianjin-Tangshan in November, 2016 wind electricity digestion situation analysis：
Under the constraints that unit safety booting is considered it can be seen from Figure 11-13, done with 15 minutes for a period
It once relatively tests, 1536 verifications has been done to November, there is no the minimum load that load value is less than unit under security constraint, so not having
There is the number for abandoning wind completely；There are 282 consumption part wind-powered electricity generations (accounting 18.4%)；Wind-powered electricity generation can be dissolved completely 1254 times by, which having, (accounts for
Than 81.6%).
Most a couple of days in November has abandons the wind period in the presence of part, and only November 25,29 days, this does not take for 2 days abandons
Wind measure, it is 29 days to abandon wind number of days, and November always abandons wind-powered electricity generation amount as 88945MWh, and total wind electricity digestion electricity is
1419757MWh。
Embodiment 5：
Beijing-Tianjin-Tangshan in December, 2016 wind electricity digestion situation analysis
Under the constraints that unit safety booting is considered it can be seen from Figure 14-16, done with 15 minutes for a period
It once relatively tests, 2976 verifications has been done to December, there is the minimum that 46 (accounting 1.5%) load values are less than unit under security constraint
It contributes, so as to abandon wind completely；There are 737 consumption part wind-powered electricity generations (accounting 25%)；Wind-powered electricity generation (accounting can be dissolved completely by having 2193 times
73.7%).
December all abandons the wind period in the presence of part daily, and it is 31 days to abandon wind number of days, and the wind-powered electricity generation amount of always abandoning in December is
347269MWh, total wind electricity digestion electricity are 1946983MWh.
Actual value compares situation analysis with simulation value
From Figure 17-19 as can be seen that in figure, in each month in two adjacent Nogata columns, left side square column represents true
Value, right side Nogata column represent simulation value, and the simulation result for abandoning air quantity is more than actual result, are because in practical management and running
Do not ensure that all thermal power plant units are shown in a fully open operation so that the minimum output of unit reduces, so as in actual schedule operation
It has dissolved wind-powered electricity generation more, but has affected Heating quality.So as to illustrate that actual schedule operation in order to dissolve wind-powered electricity generation, has sacrificed more
Some Heating qualities.
In the present embodiment under the constraint for considering unit safety booting, heating monsoon is calculated by the method for time stimulatiom
Electricity abandons air quantity and consumption amount, is analyzed so as to abandon landscape condition to warm season.
Embodiment 6
A kind of wind electricity digestion capability is additionally provided in the present embodiment and obtains system, including：
Data acquisition module is switched in unit safety under constraints, obtains the minimum load of unit；Timing acquisition is to be evaluated
Estimate power grid supply load and interconnection injection data, obtain the load power demand of power grid to be assessed；
Wind electricity digestion capability acquisition module, for according to the load power demand and unit minimum load, obtaining wind-powered electricity generation
It dissolves power and abandons wind power；Day wind electricity digestion electricity is obtained according to the wind electricity digestion power, is obtained according to the wind power of abandoning
It obtains and abandons wind-powered electricity generation amount day.
As preference, the wind electricity digestion capability acquisition module includes wind electricity digestion power cell, the wind electricity digestion
Power cell is used to, according to the load power demand and unit minimum load, obtain wind electricity digestion power：
If the load power demand is less than unit minimum load, the wind electricity digestion power is zero；
If the load power demand and the difference of the unit minimum load are more than wind power output power not less than zero,
Then the wind electricity digestion power goes out activity of force equal to the risk；
If the load power demand and the difference of the unit minimum load are more than wind power output power, the wind-powered electricity generation disappears
Power of receiving is equal to the load power demand and the difference of the unit minimum load.
In conclusion the present invention proposes wind electricity digestion capability acquisition methods and system under a kind of unit safety constraint,
Under heating period unit safety booting constraints, thermal power plant unit ensures standard-sized sheet, takes thermal power plant unit and is carried out according to practical sculpture arrangement
Start-stop determines the minimum start-up mode of unit, and determines the minimum load of unit, and heating is calculated by the method for time stimulatiom
Monsoon electricity abandons air quantity and consumption amount, is analyzed so as to abandon landscape condition to warm season.
Finally, method of the invention is only preferable embodiment, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. a kind of wind electricity digestion capability acquisition methods, which is characterized in that including：
It is switched under constraints in unit safety, obtains the minimum load of unit；Timing acquisition power grid supply load to be assessed and
Interconnection injects data, obtains the load power demand of power grid to be assessed；
According to the load power demand and unit minimum load, obtain wind electricity digestion power and abandon wind power；According to the wind
Electricity consumption power obtain day wind electricity digestion electricity, according to it is described abandon wind power acquisition abandon wind-powered electricity generation amount day.
2. wind electricity digestion capability acquisition methods according to claim 1, which is characterized in that timing acquisition power grid to be assessed supplies
Electric load and interconnection injection data, obtain the load power demand of power grid to be assessed, specifically include：
Often it is separated by setting time value, obtains primary power grid supply load data to be assessed and interconnection transmission power data, be based on
The supply load data and the interconnection transmission power data obtain load power demand.
3. wind electricity digestion capability acquisition methods according to claim 2, which is characterized in that the setting time value is 15 points
Clock.
4. wind electricity digestion capability acquisition methods according to claim 1, which is characterized in that the unit safety booting constraint
Under the conditions of be：
Ensure thermal power plant unit standard-sized sheet in heating period, setting thermal power plant unit is in the minimum load of heating period and the minimum of non-heating period
It contributes；
The start-stop scheduler task of non-thermal power plant unit is set, and non-heat supply coal unit minimum load is set separately, is non-for hot combustion gas
Unit minimum load, water-storage factory minimum load and hydroelectric power plant's minimum load；
According to above-mentioned constraint, the minimum start-up mode of unit is determined, and obtain the minimum load of unit.
5. wind electricity digestion capability acquisition methods according to claim 1, which is characterized in that according to the load power demand
With unit minimum load, obtain wind electricity digestion power and specifically include：
If the load power demand is less than unit minimum load, the wind electricity digestion power is zero；
If the load power demand and the difference of the unit minimum load are more than wind power output power not less than zero, then institute
It states wind electricity digestion power and goes out activity of force equal to the risk；
If the load power demand and the difference of the unit minimum load are more than wind power output power, the wind electricity digestion work(
Rate is equal to the load power demand and the difference of the unit minimum load.
6. wind electricity digestion capability acquisition methods according to claim 5, which is characterized in that the wind power of abandoning is the wind
Electricity goes out the difference of activity of force and the wind electricity digestion power.
7. wind electricity digestion capability acquisition methods according to claim 1, which is characterized in that the day wind electricity digestion electricity
For：
The day abandons wind-powered electricity generation amount：
In formula, Pwin.conFor wind electricity digestion power, Pwin.abanTo abandon wind power, k represents k-th of the wind electricity digestion acquired in one day
Power, n represent that is acquired in one day abandons wind power n-th.
8. wind electricity digestion capability acquisition methods according to claim 7, which is characterized in that further include：
Obtain year wind electricity digestion electricity：
Wind-powered electricity generation amount is abandoned in acquisition year：
In formula, N is year warm season number of days, and i represents the day wind electricity digestion amount of i-th day in warm season, and j represents jth day in warm season
Abandon wind-powered electricity generation amount day.
9. a kind of wind electricity digestion capability obtains system, which is characterized in that including：
Data acquisition module is switched in unit safety under constraints, obtains the minimum load of unit；Timing acquisition electricity to be assessed
Net supply load and interconnection injection data, obtain the load power demand of power grid to be assessed；
Wind electricity digestion capability acquisition module, for according to the load power demand and unit minimum load, obtaining wind electricity digestion
Power and abandon wind power；Day wind electricity digestion electricity is obtained according to the wind electricity digestion power, day is obtained according to the wind power of abandoning
Abandon wind-powered electricity generation amount.
10. wind electricity digestion capability according to claim 9 obtains system, which is characterized in that the wind electricity digestion capability obtains
Modulus block includes wind electricity digestion power cell, and the wind electricity digestion power cell is used for according to the load power demand and unit
Minimum load obtains wind electricity digestion power：
If the load power demand is less than unit minimum load, the wind electricity digestion power is zero；
If the load power demand and the difference of the unit minimum load are more than wind power output power not less than zero, then institute
It states wind electricity digestion power and goes out activity of force equal to the risk；
If the load power demand and the difference of the unit minimum load are more than wind power output power, the wind electricity digestion work(
Rate is equal to the load power demand and the difference of the unit minimum load.
Priority Applications (1)
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| CN110707760A (en) * | 2019-07-09 | 2020-01-17 | 中国电力科学研究院有限公司 | Method and system for obtaining new energy critical occupation ratio based on conventional power supply startup |
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