CN107749646A - A kind of power plant sequence coefficient calculation method for the regulation and control of monthly electricity - Google Patents
A kind of power plant sequence coefficient calculation method for the regulation and control of monthly electricity Download PDFInfo
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- CN107749646A CN107749646A CN201710948507.3A CN201710948507A CN107749646A CN 107749646 A CN107749646 A CN 107749646A CN 201710948507 A CN201710948507 A CN 201710948507A CN 107749646 A CN107749646 A CN 107749646A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
Abstract
The invention discloses a kind of power plant sequence coefficient calculation method for the regulation and control of monthly electricity, comprise the following steps：Power plant quantity n is counted, makes current power plant sequence number k=1；Calculate power plant k should stop number of days TIt should stop；Calculate power plant k stops number of days TIt can stop；Calculate power plant k sequence coefficient Dk, whereinK=k+1 is made, calculates the sequence coefficient in next power plant；Judge whether k+1>N, that is, judge whether the sequence coefficient D in all power plantskCalculating finishes；As a result it is yes, then exports the sequence coefficient in n power plant and terminate to calculate.The sequence coefficient in power plant can arrange Unit Combination as power dispatching station under Power Market, carry out the quantitative basis of monthly electricity regulation and control, so as to improve the harmony and harmony that power dispatching station arranges each power plant to perform Contract generation.Therefore, the coefficient has important practical significance and good application prospect.
Description
Technical field
The present invention relates to technical field of power dispatching automation, is used for what monthly electricity regulated and controled more particularly, to a kind of
Sort coefficient calculation method in power plant.
Background technology
《Some opinions on further in-depth power system reform》Clearly propose " three decontrol, and one is independent, and three strengthen "
Electricity market reform general requirement, China opens new round electricity and changed.With deepening continuously for power system reform, electric power
The ratio that direct dealing electricity accounts for medium-term and long-term electricity plan is increasing.Especially in monthly aspect, the market of each generating set
Electricity plan that electricity is formed after being superimposed with base power generation need by power dispatching station within the moon by rational generation schedule
Arrange to complete with progress as far as possible, deviation clearing need to be carried out after monthly end according to actual schedule result.
Power dispatching station generally use Unit Combination technology is worked out to realize that monthly electricity regulates and controls with generation schedule.It is existing
Unit Combination technology generally use Mathematics Optimization Method, such as existing Chinese invention patent (white poplar, Zhong Haiwang, Wang Peng, Wang
Ocean, the monthly Unit Combination optimization method containing Constraint of Xia Qing, Kang Chongqing based on induction object function:Beijing,
CN103324848A [P] .2013-09-25) propose a kind of monthly Unit Combination containing Constraint based on induction object function
Optimization method.Method based on mathematical optimization can not provide clearly in-process decision-making information, be unfavorable for intuitive judgment Unit Combination
The reasonability of arrangement.
The content of the invention
Can not intuitive judgment Unit Combination peace present invention aim to address the method based on mathematical optimization used at present
The rational defect of row, propose a kind of power plant sequence coefficient calculation method for the regulation and control of monthly electricity.
To realize above goal of the invention, the technical scheme of use is：
A kind of power plant sequence coefficient calculation method for the regulation and control of monthly electricity, comprise the following steps：
S1：Power plant quantity n is counted, makes current power plant sequence number k=1；
S2：Calculate power plant k should stop number of days TIt should stop；
S3：Calculate power plant k stops number of days TIt can stop；
S4：Calculate power plant k sequence coefficient Dk, wherein
S5：K=k+1 is made, calculates the sequence coefficient in next power plant；
S6：Judge whether k+1>N, that is, judge whether the sequence coefficient D in all power plantskCalculating finishes；As a result be it is yes, then
Export the sequence coefficient in n power plant and terminate to calculate；As a result it is no, then is transferred to step S2.
Described in wherein step S2
Wherein TSubsequentlyFor current monthly remaining calendar number of days；TFollow-up maintenanceFor follow-up maintenance number of days；PIt is follow-up limitedFor power plant subsequently by
Limited capacity amount, TIt is follow-up limitedFor follow-up limited number of days；MPower plantFor power plant k total installation of generating capacity； QFollow-up surplus generationIt is monthly follow-up remaining for power plant
Generated energy；I, which is that power plant k is contained, sends out point unit sequence number, MI, unitFor the hair point unit installed capacity, KI, operationFor the generating set pair
The typical operating load rate answered.
Wherein described TFollow-up maintenanceCurrent monthly remaining residue calendar is calculated according to the power plant k repair schedules for including generating set
Power plant k includes the maintenance number of days of generating set in number of days, and the ratio of power plant's total installation of generating capacity is accounted for each generating set installed capacity
Gained is calculated after making weighted average for weight coefficient.
TIt is follow-up limitedAccording to power plant's output upper limit and restricted period, power plant's total installation of generating capacity to be subtracted into power plant's output upper limit, so
Corresponding restricted period is folded to number of days afterwards and calculates gained.
Described in step S3
Wherein TSubsequentlyFor current monthly remaining calendar number of days；TFollow-up maintenanceFor follow-up maintenance number of days；PFollow-up peakPushed up for follow-up power plant
Peak capacity, TFollow-up peakFor follow-up peak number of days；MPower plantFor power plant k total installation of generating capacity.
TFollow-up peakFor according to power plant's output lower limit and restricted period, power plant's output lower limit in each restricted period of calculated for subsequent
Corresponding capacity, then corresponding restricted period is folded to number of days and calculates gained.
Preferably, T is worked asIt can stopFor 0 when, order sequence coefficient DkThe positive number larger equal to one, can make Dk=1000.
Compared with prior art, the beneficial effects of the invention are as follows：It is proposed a kind of power plant row for the regulation and control of monthly electricity
Sequence coefficient calculation method, Unit Combination can be arranged as power dispatching station, carries out the quantitative basis of monthly electricity regulation and control, is carried
High power dispatching station arranges the harmony and harmony of each power plant execution Contract generation.
Brief description of the drawings
Fig. 1 is the flow chart of the present invention；
Fig. 2 is different coal machines and combustion engine typical load rate statistical chart.
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to be interpreted as the limitation to this patent；
Below in conjunction with drawings and examples, the present invention is further elaborated.
Embodiment 1
Fig. 1 is refer to, Fig. 1 is the flow chart of the present invention.
A kind of power plant sequence coefficient calculation method for the regulation and control of monthly electricity, comprise the following steps：
S1：Power plant quantity n is counted, makes current power plant sequence number k=1；
S2：Calculate power plant k should stop number of days TIt should stop；
S3：Calculate power plant k stops number of days TIt can stop；
S4：Calculate power plant k sequence coefficient Dk, wherein
S5：K=k+1 is made, calculates the sequence coefficient in next power plant；
S6：Judge whether k+1>N, that is, judge whether the sequence coefficient D in all power plantskCalculating finishes；As a result be it is yes, then
Export the sequence coefficient in n power plant and terminate to calculate；As a result it is no, then is transferred to step S2.
1) data needed for power plant sequence coefficient calculating, including power plant's title, power plant's total installation of generating capacity, power plant are obtained first
Comprising generating set, generating set installed capacity, GENERATOR MAINTENANCE SCHEDULING IN, power plant's output bound and restricted period, electricity
Factory monthly follow-up surplus generation, all types of generating set typical load rates；Then power plant quantity n is counted, makes current generate electricity
Factory sequence number k=1；
2) calculate power plant k should stop number of days TIt should stop；
TSubsequentlyIt is for current monthly remaining calendar number of days, the i.e. number of days of plan day to monthly last day, such as plan day
During July 5, TSubsequently=31-5+1=27；TFollow-up maintenanceFor follow-up maintenance number of days, calculated and worked as according to the repair schedule comprising generating set
Power plant k includes the maintenance number of days of generating set in preceding monthly residue calendar number of days, and it is total to account for power plant with each generating set installed capacity
The ratio of installed capacity is that weight coefficient makees weighted average, and power plant is calculated and subsequently overhauls number of days；
PIt is follow-up limitedFor the follow-up constrained capacity of power plant, TIt is follow-up limitedFor follow-up limited number of days；According to power plant's output upper limit and by limited time
Section, in each restricted period of calculated for subsequent, the constrained capacity P of power plantIt is follow-up limited, i.e. the powered down factory's output upper limit of power plant's total installation of generating capacity,
Corresponding restricted period is folded to number of days and is calculated as TIt is follow-up limited；
MPower plantFor power plant k total installation of generating capacity；
QFollow-up surplus generationFor the monthly follow-up surplus generation of power plant；
I is generating set sequence number, M contained by power plant kI, unitFor the generating set installed capacity, KI, operationFor the generating set pair
The typical operating load rate answered, distinguish and consider Thermal generation unit and jet dynamic control, and gas electricity generator group differentiation considers
Joint cargo system or two-shift operation mode (being joint cargo system if Gas Generator Set has cogeneration of heat and power requirement, other are defaulted as double shift)；
Specifically, different typical operating load rates corresponding to the different type generating set described in Fig. 2 can be used；
3) calculate power plant k stops number of days TIt can stop；
Wherein TSubsequentlyFor current monthly remaining calendar number of days, that is, plan the number of days of day to monthly last day, for example, counting
Day is drawn when being July 5, TSubsequently=31-5+1=27；
TFollow-up maintenanceFor follow-up maintenance number of days, current monthly remaining day is calculated according to the power plant k repair schedules for including generating set
The maintenance number of days that power plant k in number of days includes generating set is gone through, the ratio of power plant's total installation of generating capacity is accounted for each generating set installed capacity
Example makees weighted average for weight coefficient, and power plant is calculated and subsequently overhauls number of days；
PFollow-up peakFor follow-up power plant peak capacity, TFollow-up peakFor follow-up peak number of days；According to power plant's output lower limit and by limited time
Section, in each restricted period of calculated for subsequent, the peak capacity P of power plantFollow-up peak, i.e. power plant's output lower limit corresponds to capacity, it is corresponding by
Section is folded to number of days and is calculated as T in limited timeFollow-up peak；
MPower plantFor power plant k total installation of generating capacity；
4) power plant k sequence coefficient D is calculatedk, wherein
Work as TIt can stopWhen, make DkThe positive number larger equal to one, specifically, D can be madek=1000；
5) k=k+1 is made, calculates the sequence coefficient in next power plant；
6) k+1 is judged whether>N, i.e., whether the sequence coefficient D in all power plantskCalculating finishes；If so, n generating of output
The sequence coefficient of factory simultaneously terminates to calculate, if it is not, being then transferred to step 2).
Power plant k sequence coefficient DkIt is smaller, power plant k electricity progress hysteresis is represented, it is larger to owe risk, and it generates electricity
Minus deviation easily occurs for amount, should preferentially start shooting；Power plant k sequence coefficient DkIt is bigger, represent that power plant k electricity progress surpasses
Before, super generating risk is larger, and overgauge easily occurs for its generated energy, should preferentially shut down；If DkFor very big negative, then it represents that power plant surpasses
Send out very risky, need start of giving priority in arranging for badly, if DkFor very big positive number, then it represents that power plant's super generating is very risky, needs preferential peace badly
Row shuts down；The sequence coefficient in power plant can arrange Unit Combination as power dispatching station, carry out the amount of monthly electricity regulation and control
Change foundation, so as to improve the harmony and harmony that power dispatching station arranges each power plant to perform Contract generation.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (6)
1. a kind of power plant sequence coefficient calculation method for the regulation and control of monthly electricity, it is characterised in that comprise the following steps：
S1：Power plant quantity n is counted, makes current power plant sequence number k=1；
S2：Calculate power plant k should stop number of days TIt should stop；
S3：Calculate power plant k stops number of days TIt can stop；
S4：Calculate power plant k sequence coefficient Dk, wherein
S5：K=k+1 is made, calculates the sequence coefficient in next power plant；
S6：Judge whether k+1>N, that is, judge whether the sequence coefficient D in all power plantskCalculating finishes；As a result it is yes, then exports n
The sequence coefficient in individual power plant simultaneously terminates to calculate；As a result it is no, then is transferred to step S2.
2. according to claim 1 a kind of for monthly electricity regulation and control amount power plant sequence coefficient calculation method, it is special
Sign is, described in step S2
Wherein TSubsequentlyFor current monthly remaining calendar number of days；TFollow-up maintenanceFor follow-up maintenance number of days；PIt is follow-up limitedIt is power plant subsequently by limited capacity
Amount, TIt is follow-up limitedFor follow-up limited number of days；MPower plantFor power plant k total installation of generating capacity；QFollow-up surplus generationFor the monthly follow-up remaining generating of power plant
Amount；I, which is that power plant k is contained, sends out point unit sequence number, MI, unitFor the hair point unit installed capacity, KI, operationFor corresponding to the generating set
Typical operating load rate.
3. according to claim 2 a kind of for monthly electricity regulation and control amount power plant sequence coefficient calculation method, it is special
Sign is, the TFollow-up maintenanceCalculated according to the power plant k repair schedules for including generating set in current monthly remaining residue calendar number of days
Power plant k includes the maintenance number of days of generating set, and the ratio of power plant's total installation of generating capacity is accounted for as weight using each generating set installed capacity
Coefficient calculates gained after making weighted average.
4. according to claim 2 a kind of for monthly electricity regulation and control amount power plant sequence coefficient calculation method, it is special
Sign is, the TIt is follow-up limitedFor according to power plant's output upper limit and restricted period, power plant's total installation of generating capacity is subtracted in power plant's output
Limit, corresponding restricted period is then folded to number of days and calculates gained.
5. according to claim 1 a kind of for monthly electricity regulation and control amount power plant sequence coefficient calculation method, it is special
Sign is, described in step S3
Wherein TSubsequentlyFor current monthly remaining calendar number of days；TFollow-up maintenanceFor follow-up maintenance number of days；PFollow-up peakHold for follow-up power plant peak
Amount, TFollow-up peakFor follow-up peak number of days；MPower plantFor power plant k total installation of generating capacity.
6. according to claim 5 a kind of for monthly electricity regulation and control amount power plant sequence coefficient calculation method, it is special
Sign is, the TFollow-up peakFor according to power plant's output lower limit and restricted period, under power plant contributes in each restricted period of calculated for subsequent
The corresponding capacity of limit, then corresponding restricted period is folded to number of days and calculates gained.
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Cited By (1)
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