CN103199562A - Wind power station active power control method - Google Patents

Abstract

The invention discloses a wind power station active power control method which includes the following steps. Firstly, a wind power station and a net value of active power of a network point are measured. Secondly, whether a difference between objective power and actual power is in a dead zone threshold value range of power deviation is judged. Thirdly, the maximum active power of all wind turbine generator units is calculated. Fourthly, an active margin addition queue and an active margin reduction queue are generated. Fifthly, an active margin addition sum and an active margin reduction sum of all the adjustable wind turbine generator units in operation are calculated. Sixthly, a starting queue and a halting queue are generated. Seventhly, a power regulating strategy is confirmed. Eighthly, a control order is emitted to the wind turbine generator units. Ninthly, returning to the first step is not performed until the wind turbine generator units perform the order. According to the wind power station active power control method, a called active power regulating order can be automatically distributed to a single wind turbine generator unit for actuation. Labor intensity of operation staff in the wind power station and loss of generated energy by the wind power station are greatly reduced. A responding speed of a called power object, economic benefits of the wind power station and precision in regulating power are improved.

Description

Wind energy turbine set active power control method

Technical field:

The present invention relates to a kind of wind energy turbine set active power control method, belong to technical field of wind power generation.

Background technology:

In recent years, wind power generation generated electricity as renewable and clean energy resource and was greatly developed.Account for the continuous lifting of total installation of generating capacity ratio along with the installed capacity of wind-powered electricity generation unit, the wind-powered electricity generation unit is sent to the fluctuating widely of power of electrical network will bring increasing adverse effect to the stable operation of electrical network, therefore, realize that the adjustable of wind energy turbine set active power is the problem that presses for solution.

The active power regulative mode that uses in the wind energy turbine set mostly is the mode of regulating manually at present.Particularly, at first carrying out active power by dispatching of power netwoks department by liaison mode notice wind energy turbine set regulates, then, wind energy turbine set operator on duty compares active power desired value and the real value of sending out of wind energy turbine set active power at this moment of scheduling, then, by the wind energy turbine set operator on duty based on the comparison difference and manually control the wind-powered electricity generation unit by the control device in the wind energy turbine set and open/stop, lifting/lowering power reaches the desired value that scheduling requires in order to control the active power of wind farm grid-connected point.There is following defective in this mode:

1) manually finishes by operating personnel owing to above-mentioned wind energy turbine set active power regulative mode, be after operating personnel receive the scheduling adjustment requirement, obtain the desired value of scheduling by calculating with the comparison difference between wind energy turbine set reality value of sending out of this moment, and control manually according to this comparison difference that wind-powered electricity generation unit in the wind energy turbine set opens/stops, lifting/lowering power, thereby have that error is big, response speed waits problem slowly, and then causes the loss of wind energy turbine set energy output.

2) above-mentioned wind energy turbine set active power regulative mode does not call and controls it according to the concrete working condition of each wind-powered electricity generation unit in the wind energy turbine set, but comparatively randomly the wind-powered electricity generation unit is opened/stop the operation of operating or carrying out lifting/lowering power by operating personnel.Therefore; above-mentioned wind energy turbine set active power regulative mode not only highly relies on the reliability of corresponding unit work; but also ignored the concrete working condition of wind-powered electricity generation unit (for example wind-powered electricity generation unit accumulated running time, accumulative total downtime etc.) because operating corresponding wind-powered electricity generation unit randomly; thereby some unit is being moved for a long time always; other units then the long period shutting down always, thereby cause the unit failure rate to promote.And the wind-powered electricity generation unit opens/stops stability and the fail safe that itself will influence the wind-powered electricity generation unit continually, also can influence the useful life of wind-powered electricity generation unit simultaneously.

Summary of the invention:

For addressing the above problem, the objective of the invention is to be to propose a kind of wind energy turbine set active power control method, this method can be adjusted the active power of wind farm grid-connected point timely and accurately, take into full account the real work situation of each wind-powered electricity generation unit simultaneously, improved stability and the fail safe of wind-powered electricity generation unit operation.

For achieving the above object, technology of the present invention is raised difficult questions as follows:

Wind energy turbine set active power control method may further comprise the steps:

(1) active power that measures wind farm grid-connected point is sent out value P in fact _Mea, calculate and site active power desired value P _TargetWith the P of the real value of sending out of active power _MeaDifference, be designated as active power deviation delta P=P _Target-P _Mea

(2) judge that target power and actual power deviation are whether in the threshold values scope of the dead band of power deviation; The dead band threshold values δ of meritorious power deviation is set, if the absolute value of active power deviation | Δ P| then enters step (3) greater than dead band threshold values δ, otherwise returns step (1);

(3) according to surveying wind data in real time, calculate the maximum active power of each wind-powered electricity generation unit;

(4) send out active power and maximum active power according to the current reality of each wind-powered electricity generation unit, calculate meritorious nargin coefficient and the meritorious nargin coefficient that subtracts of increasing, meritorious nargin coefficient and the meritorious size that subtracts the nargin coefficient of increasing of foundation, generation is gained merit to increase the nargin formation and gain merit and is subtracted the nargin formation;

(5) adjustable wind-powered electricity generation unit meritorious that calculates all operations increases nargin summation, the meritorious nargin summation that subtracts;

(6) according to the accumulative total downtime of wind-powered electricity generation unit and the length of accumulated running time, generate the start formation and shut down formation;

(7) according to the active power deviation, determine power adjustment strategy;

(8) adjust strategy according to power, aweather group of motors is sent control command;

(9) after the action of wait wind-powered electricity generation unit execution command is finished, return step (1);

Beneficial effect of the present invention is as follows:

The present invention can be assigned to single wind-powered electricity generation unit with the active power regulating command of dispatching automatically and carry out, both can alleviate the wind energy turbine set labor intensity of operating personnel greatly, can improve again the response speed of scheduling power target and the precision of power adjustments, and then the loss of minimizing wind energy turbine set energy output, the economic benefit of raising wind energy turbine set; And can avoid the wind-powered electricity generation unit to open continually/stop; and avoid occurring then problem such as shutdown for a long time of some other unit of unit long-play; thereby reduce the failure rate of wind-powered electricity generation unit, improve stability and the fail safe of wind-powered electricity generation unit operation, and then prolong the useful life of wind-powered electricity generation unit.

Description of drawings:

Fig. 1 is wind energy turbine set active power control method flow chart of the present invention.

Embodiment:

For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.

Be illustrated in figure 1 as the flow chart of wind energy turbine set active power control method of the present invention.Present embodiment is to be to propose a kind of active power that can adjust wind farm grid-connected point timely and accurately, taken into full account the real work situation of each wind-powered electricity generation unit simultaneously, improve the stability of wind-powered electricity generation unit operation and the wind energy turbine set active power control method of fail safe, its method step is as follows:

(1) active power that measures wind farm grid-connected point is sent out value P in fact _Mea, calculate and site active power desired value P _TargetWith the P of the real value of sending out of active power _MeaDifference, be designated as active power deviation delta P=P _Target-P _Mea

(2) the dead band threshold values δ of meritorious power deviation is set, if the absolute value of active power deviation | Δ P| then enters step (3) greater than dead band threshold values δ, otherwise returns step (1);

(3) according to surveying wind data in real time, calculate the maximum active power of each wind-powered electricity generation unit;

According to power of the assembling unit curve, adopt linear interpolation method to calculate the maximum active power of unit under current wind conditions, computing formula is as follows:

$P_{i\max }=\frac{P_{\mathrm{icurve}.k+1}-P_{\mathrm{icurve}.k}}{S_{\mathrm{icurve}.k+1}-S_{\mathrm{icurve}.k}}\×(S_{\mathrm{imea}}-S_{\mathrm{icurve}.k})+P_{\mathrm{icurve}.k},(S_{\mathrm{icurve}.k}\≤S_{\mathrm{imea}}\≤S_{\mathrm{icurve}.k+1})$

Wherein, P _Icurve.k+1, P _Icurve.kBe respectively the active power value that k+1 point and k are ordered in the i typhoon group of motors power curve, S _Icurve.k+1And S _Icurve.kBe respectively the air speed value that k+1 point and k are ordered in the i typhoon group of motors power curve, S _ImeaBe the wind speed instantaneous value of i typhoon group of motors, P _ImaxBe the maximum active power of i typhoon group of motors under current wind conditions.

(4) send out active power and maximum active power according to the current reality of each wind-powered electricity generation unit, calculate meritorious nargin coefficient and the meritorious nargin coefficient that subtracts of increasing, meritorious nargin coefficient and the meritorious size that subtracts the nargin coefficient of increasing of foundation, generation is gained merit to increase the nargin formation and gain merit and is subtracted the nargin formation.Concrete steps are as follows:

(a) calculate the meritorious nargin coefficient that increases of each wind-powered electricity generation unit

Computing formula is as follows:

$C_{\mathrm{im}\arg \mathrm{in}}^{\mathrm{add}}=\frac{P_{i\max }-P_{\mathrm{imea}}}{P_{i\max }}$

Wherein, P _ImeaIt is the real value of sending out of i typhoon group of motors active power.

Increase the descending order of nargin coefficient according to gaining merit and arrange, generate the meritorious nargin formation that increases.

(b) calculate the meritorious nargin coefficient that subtracts of each wind-powered electricity generation unit

Computing formula is as follows:

$C_{\mathrm{im}\arg \mathrm{in}}^{\mathrm{sub}}=\frac{P_{\mathrm{imea}}-P_{i\min }}{P_{i\max }}$

Wherein, P _ImeaBe real value, the P of sending out of i typhoon group of motors active power _IminIt is the minimum operate power of i typhoon group of motors.

Subtract the descending order of nargin coefficient according to gaining merit and arrange, generate the meritorious nargin formation that subtracts.

(5) adjustable wind-powered electricity generation unit meritorious that calculates all operations increases nargin summation, the meritorious nargin summation that subtracts.Concrete steps are as follows:

(a) calculate the meritorious nargin summation that increases of the adjustable wind-powered electricity generation unit of all operations

Computing formula is as follows:

$P_{m\arg \mathrm{in}}^{\mathrm{add}}=\underset{i=1}{\overset{m}{\mathrm{\Σ}}}(P_{i\max }-P_{\mathrm{imea}})$

Wherein, m is the wind-powered electricity generation machine number of organizing a performance.

(b) calculate the meritorious nargin summation that subtracts of the adjustable wind-powered electricity generation unit of all operations

Computing formula is as follows:

$P_{m\arg \mathrm{in}}^{\mathrm{sub}}=\underset{i=1}{\overset{m}{\mathrm{\Σ}}}(P_{\mathrm{imea}}-P_{i\min })$

Wherein, m is the wind-powered electricity generation machine number of organizing a performance.

(6) according to the accumulative total downtime of each wind-powered electricity generation unit and the length of accumulated running time, generate the start formation and shut down formation.

(1) generation of start formation;

Record the time of each this shutdown of wind-powered electricity generation unit, after the time of this shutdown of wind-powered electricity generation unit surpassed Minimum Idle Time, the wind-powered electricity generation unit can join the start formation, again start.

The time that accumulative total was shut down before time of this shutdown of wind-powered electricity generation unit added namely obtains unit accumulative total downtime, arranges according to the unit accumulative total downtime of order from long to short, generates the start formation.

(2) generation of shutdown formation;

Record the time of each this operation of wind-powered electricity generation unit, after the time of this operation of wind-powered electricity generation unit surpassed the shortest available machine time, the wind-powered electricity generation unit can join the shutdown formation, shuts down again.

The time of accumulative total operation namely obtained unit accumulated running time before time of this operation of wind-powered electricity generation unit added, arranged according to unit accumulated running time order from long to short, generated and shut down formation.

(7) according to the active power deviation, determine power adjustment strategy.

If active power deviation delta P goes to step (A) greater than zero, if active power deviation delta P goes to step (B) less than zero.

(A) note will be started shooting, and the meritorious nargin summation that increases of all wind-powered electricity generation unit startings is P in the formation _Startup, Wherein, n is the start formation apoplexy motor number of organizing a performance.

At first judge active power deviation delta P whether less than

If be not less than Be but that current meritorious increase-volume amount is more than or equal to current all unit partition capacities, then earlier the adjustable wind-powered electricity generation unit active power of all operations is risen to maximum active power, start all wind-powered electricity generation units successively according to the start queue sequence then, and with maximum active power operation;

If less than

Next judge active power deviation delta P whether greater than If greater than

When the adjustable wind-powered electricity generation unit of i.e. all operations all operates in maximum active power, still can not satisfy the requirement of current meritorious increase-volume amount, then earlier the adjustable wind-powered electricity generation unit active power of all operations is risen to maximum active power, start the wind-powered electricity generation unit from start successively the formation then, up to start the wind-powered electricity generation unit meritorious increase the nargin summation more than or equal to

Then will

Between the wind-powered electricity generation unit that has started, adopt similar adjustment nargin principle to distribute as meritorious recruitment;

If be not more than

When the adjustable wind-powered electricity generation unit of i.e. all operations all rises to maximum active power, can satisfy the requirement of current meritorious increase-volume amount, then select the wind-powered electricity generation unit the nargin formation successively from meritorious increasing, until the meritorious nargin summation that increases of the wind-powered electricity generation unit of having selected more than or equal to Δ P, then between the wind-powered electricity generation unit of having selected, adopt similar adjustment nargin principle to distribute as meritorious recruitment Δ P, go to step 8).

(B) at first judge the absolute value of active power deviation delta P | Δ P| whether greater than

If greater than

When the adjustable wind-powered electricity generation unit of i.e. all operations all operates in minimum operate power; still can not satisfy the current meritorious capacity requirement that subtracts; then earlier the adjustable wind-powered electricity generation unit active power of all operations is down to minimum operate power; from shut down formation, stop the wind-powered electricity generation unit successively then, up to stop the wind-powered electricity generation unit meritorious subtract the nargin summation more than or equal to

Then will stop the meritorious nargin summation P that subtracts of wind-powered electricity generation unit _Stop(

N is for stopping the wind-powered electricity generation machine number of organizing a performance) with

Difference between the wind-powered electricity generation unit that does not need to shut down, adopt similar adjustment nargin principle to distribute as meritorious recruitment;

If be not more than

When the adjustable wind-powered electricity generation unit of i.e. all operations all is down to minimum operate power, can satisfy the current meritorious capacity requirement that subtracts, then select the wind-powered electricity generation unit the nargin formation successively from meritorious subtracting, subtract the nargin summation more than or equal to | Δ P| until the wind-powered electricity generation unit of having selected meritorious, then inciting somebody to action | Δ P| adopts similar adjustment nargin principle to distribute between the wind-powered electricity generation unit of having selected as meritorious reduction, goes to step 8).

(8) adjust strategy according to power, aweather group of motors is sent control command.

(9) after the action of wait wind-powered electricity generation unit execution command is finished, return step 1).

Wherein, in the above-mentioned steps (7), described similar adjustment nargin principle is that the meritorious allowance size according to the wind-powered electricity generation unit has the distribution of work, namely residue is much more meritorious, provides many meritorious, and residue is meritorious few, few gaining merit is provided, can guarantees that so every typhoon group of motors has close meritorious nargin.

If require the wind-powered electricity generation unit to increase active power, then the active power Pi of wind-powered electricity generation machine set of dispense can be expressed as:

$P_i=\frac{P_{i\max }-P_{\mathrm{imea}}}{P_{m\arg \mathrm{in}}^{\mathrm{add}}}\×\mathrm{\ΔP}+P_{\mathrm{imea}}$

If require the wind-powered electricity generation unit to reduce active power, then the active power Pi of wind-powered electricity generation machine set of dispense can be expressed as:

$P_i=\frac{P_{\mathrm{imea}}-P_{i\min }}{P_{m\arg \mathrm{in}}^{\mathrm{sub}}}\×\mathrm{\ΔP}+P_{\mathrm{imea}}.$

In the present invention, above-mentioned maximum active power is: under current wind conditions, and the maximum active power that the wind-powered electricity generation unit can be exported, that is the meritorious adjustable upper limit.

Above-mentioned minimum operate power is: when the reality of wind-powered electricity generation unit was sent out active power less than certain value, the wind-powered electricity generation unit will directly be shut down, that is meritorious adjustable lower limit.

The shortest above-mentioned available machine time is for arriving the shortest time interval of shutting down again after the start of wind-powered electricity generation unit.

Above-mentioned Minimum Idle Time is that the wind-powered electricity generation compressor emergency shutdown is afterwards to the shortest time interval of starting shooting again.

The present invention has fully taken into account the real work situation of wind-powered electricity generation unit; real work situation according to each wind-powered electricity generation unit in the wind energy turbine set is rationally controlled its power output; rather than manually carry out power at random and control; thereby; can be when improving control precision and response speed; also take into account each wind-powered electricity generation unit such as accumulated running time; add up actual operating positions such as downtime; like this; by rationally calling wind-powered electricity generation unit in the wind energy turbine set; can avoid the wind-powered electricity generation unit to open continually/stop; and avoid occurring then problem such as shutdown for a long time of some other unit of unit long-play; thereby reduce the failure rate of wind-powered electricity generation unit; improve stability and the fail safe of wind-powered electricity generation unit operation, and then prolong the useful life of wind-powered electricity generation unit.

More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (8)

1. wind energy turbine set active power control method may further comprise the steps:

(1) active power that measures wind farm grid-connected point is sent out value P in fact _Mea, calculate and site active power desired value P _TargetWith the P of the real value of sending out of active power _MeaDifference, be designated as active power deviation delta P=P _Target-P _Mea

(2) judge that target power and actual power deviation are whether in the threshold values scope of the dead band of power deviation; The dead band threshold values δ of meritorious power deviation is set, if the absolute value of active power deviation | Δ P| then enters step (3) greater than dead band threshold values δ, otherwise returns step (1);

(3) according to surveying wind data in real time, calculate the maximum active power of each wind-powered electricity generation unit; According to power of the assembling unit curve, adopt linear interpolation method to calculate the maximum active power of unit under current wind conditions, computing formula is as follows:

$P_{i\max }=\frac{P_{\mathrm{icurve}.k+1}-P_{\mathrm{icurve}.k}}{S_{\mathrm{icurve}.k+1}-S_{\mathrm{icurve}.k}}\×(S_{\mathrm{imea}}-S_{\mathrm{icurve}.k})+P_{\mathrm{icurve}.k},(S_{\mathrm{icurve}.k}\≤S_{\mathrm{imea}}\≤S_{\mathrm{icurve}.k+1})$

Wherein, P _Icurve.k+1, P _Icurve.kBe respectively the active power value that k+1 point and k are ordered in the i typhoon group of motors power curve, S _Icurve.k+1And S _Icurve.kBe respectively the air speed value that k+1 point and k are ordered in the i typhoon group of motors power curve, S _ImeaBe the wind speed instantaneous value of i typhoon group of motors, P _ImaxBe the maximum active power of i typhoon group of motors under current wind conditions;

(4) send out active power and maximum active power according to the current reality of each wind-powered electricity generation unit, calculate meritorious nargin coefficient and the meritorious nargin coefficient that subtracts of increasing, meritorious nargin coefficient and the meritorious size that subtracts the nargin coefficient of increasing of foundation, generation is gained merit to increase the nargin formation and gain merit and is subtracted the nargin formation;

(5) adjustable wind-powered electricity generation unit meritorious that calculates all operations increases nargin summation, the meritorious nargin summation that subtracts;

(6) according to the accumulative total downtime of wind-powered electricity generation unit and the length of accumulated running time, generate the start formation and shut down formation;

(7) according to the active power deviation, determine power adjustment strategy;

(8) adjust strategy according to power, aweather group of motors is sent control command;

(9) after the action of wait wind-powered electricity generation unit execution command is finished, return step (1).

2. wind energy turbine set active power control method according to claim 1 is characterized in that, in the above-mentioned steps (4), generates and meritoriously to increase the nargin formation and the meritorious concrete steps that subtract the nargin formation are as follows:

(a) calculate the meritorious nargin coefficient that increases of each wind-powered electricity generation unit

Computing formula is as follows:

$C_{\mathrm{im}\arg \mathrm{in}}^{\mathrm{add}}=\frac{P_{i\max }-P_{\mathrm{imea}}}{P_{i\max }}$

Wherein, P _ImeaIt is the real value of sending out of i typhoon group of motors active power;

Increase the descending order of nargin coefficient according to gaining merit and arrange, generate the meritorious nargin formation that increases;

(b) calculate the meritorious nargin coefficient that subtracts of each wind-powered electricity generation unit Computing formula is as follows:

$C_{\mathrm{im}\arg \mathrm{in}}^{\mathrm{sub}}=\frac{P_{\mathrm{imea}}-P_{i\min }}{P_{i\max }}$

Wherein, P _ImeaBe real value, the P of sending out of i typhoon group of motors active power _IminIt is the minimum operate power of i typhoon group of motors;

Subtract the descending order of nargin coefficient according to gaining merit and arrange, generate the meritorious nargin formation that subtracts.

3. wind energy turbine set active power control method according to claim 2 is characterized in that, described step (5), and concrete calculation procedure is as follows:

(a) calculate the meritorious nargin summation that increases of the adjustable wind-powered electricity generation unit of all operations

Computing formula is as follows:

$P_{m\arg \mathrm{in}}^{\mathrm{add}}=\underset{i=1}{\overset{m}{\mathrm{\Σ}}}(P_{i\max }-P_{\mathrm{imea}})$

Wherein, m is the wind-powered electricity generation machine number of organizing a performance;

(b) calculate the meritorious nargin summation that subtracts of the adjustable wind-powered electricity generation unit of all operations

Computing formula is as follows:

$P_{m\arg \mathrm{in}}^{\mathrm{sub}}=\underset{i=1}{\overset{m}{\mathrm{\Σ}}}(P_{\mathrm{imea}}-P_{i\min })$

Wherein, m is the wind-powered electricity generation machine number of organizing a performance.

4. according to any described wind energy turbine set active power control method of claim 1 to 3, it is characterized in that in the above-mentioned steps (6), the step of described generation start formation and shutdown formation is as follows:

The generation step of start formation is: record the time of each this shutdown of wind-powered electricity generation unit, after the time of this shutdown of wind-powered electricity generation unit surpassed Minimum Idle Time, the wind-powered electricity generation unit can join the start formation, again start.

The time that accumulative total was shut down before time of this shutdown of wind-powered electricity generation unit added namely obtains unit accumulative total downtime, arranges according to the unit accumulative total downtime of order from long to short, generates the start formation;

The generation step of shutting down formation is: record the time of each this operation of wind-powered electricity generation unit, after the time of this operation of wind-powered electricity generation unit surpassed the shortest available machine time, the wind-powered electricity generation unit can join the shutdown formation, shuts down again.

The time of accumulative total operation namely obtained unit accumulated running time before time of this operation of wind-powered electricity generation unit added, arranged according to unit accumulated running time order from long to short, generated and shut down formation.

5. wind energy turbine set active power control method according to claim 3 is characterized in that, in the described step (7), the method of determining power adjustment strategy is: if active power deviation delta P is greater than zero, go to step (A), if active power deviation delta P goes to step (B) less than zero;

(A) at first judge active power deviation delta P whether less than

Note will be started shooting, and the meritorious nargin summation that increases of all wind-powered electricity generation unit startings is P in the formation _Startup, formula is:

Wherein, n is the start formation apoplexy motor number of organizing a performance;

(B) at first judge the absolute value of active power deviation delta P | Δ P| whether greater than

If | Δ P| greater than

Then earlier the adjustable wind-powered electricity generation unit active power of all operations is down to minimum operate power, from shut down formation, stops the wind-powered electricity generation unit successively then, up to stop the wind-powered electricity generation unit meritorious subtract the nargin summation more than or equal to

Then will stop the meritorious nargin summation P that subtracts of wind-powered electricity generation unit _StopWith

Difference between the wind-powered electricity generation unit that does not need to shut down, adopt similar adjustment nargin principle to distribute as meritorious recruitment; Wherein,

N is for stopping the wind-powered electricity generation machine number of organizing a performance,

If | Δ P| is not more than

Then select the wind-powered electricity generation unit the nargin formation successively from meritorious subtracting, subtract the nargin summation more than or equal to | Δ P| until the wind-powered electricity generation unit of having selected meritorious, then inciting somebody to action | Δ P| adopts similar adjustment nargin principle to distribute between the wind-powered electricity generation unit of having selected as meritorious reduction, goes to step (8).

6. described wind energy turbine set active power control method according to claim 5 is characterized in that, in the above-mentioned steps (A), if active power deviation delta P is not less than

Then earlier the adjustable wind-powered electricity generation unit active power of all operations is risen to maximum active power, start all wind-powered electricity generation units successively according to the start queue sequence then, and with maximum active power operation;

If active power deviation delta P less than

Judge then active power deviation delta P whether greater than

If active power deviation delta P greater than

Then earlier the adjustable wind-powered electricity generation unit active power of all operations is risen to maximum active power, from the start formation, starts the wind-powered electricity generation unit successively then, up to start the wind-powered electricity generation unit meritorious increase the nargin summation more than or equal to

Then will

Between the wind-powered electricity generation unit that has started, adopt similar adjustment nargin principle to distribute as meritorious recruitment;

If be not more than

When the adjustable wind-powered electricity generation unit of i.e. all operations all rises to maximum active power, can satisfy the requirement of current meritorious increase-volume amount, then select the wind-powered electricity generation unit the nargin formation successively from meritorious increasing, until the meritorious nargin summation that increases of the wind-powered electricity generation unit of having selected more than or equal to Δ P, then between the wind-powered electricity generation unit of having selected, adopt similar adjustment nargin principle to distribute as meritorious recruitment Δ P, go to step (8).

7. described wind energy turbine set active power control method according to claim 6 is characterized in that, described similar adjustment nargin principle is that the meritorious allowance size according to the wind-powered electricity generation unit has the distribution of work, more than namely residue is gained merit, many gaining merit is provided, and residue is meritorious few, and few gaining merit is provided.

8. described wind energy turbine set active power control method according to claim 7 is characterized in that, if require the wind-powered electricity generation unit to increase active power, then the active power P of wind-powered electricity generation machine set of dispense _iCan be expressed as:

$P_i=\frac{P_{i\max }-P_{\mathrm{imea}}}{P_{m\arg \mathrm{in}}^{\mathrm{add}}}\×\mathrm{\ΔP}+P_{\mathrm{imea}};$

If require the wind-powered electricity generation unit to reduce active power, then the active power P of wind-powered electricity generation machine set of dispense _iCan be expressed as:

$P_i=\frac{P_{\mathrm{imea}}-P_{i\min }}{P_{m\arg \mathrm{in}}^{\mathrm{sub}}}\×\mathrm{\ΔP}+P_{\mathrm{imea}}.$

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