CN105240211A - Variable-speed variable-pitch wind turbine generator optimized power curve control method - Google Patents
Variable-speed variable-pitch wind turbine generator optimized power curve control method Download PDFInfo
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Abstract
The invention discloses a variable-speed variable-pitch wind turbine generator optimized power curve control method which is characterized in that by dynamically adjusting the set values of the rated speed and the rated torque of a wind turbine generator, wind turbine generator wind speed-power curve deviation caused by mechanical parameter difference can be eliminated. The method can ensure that the power curve difference of a single wind turbine generator is shortened under equal external conditions, moreover, the wind energy availability of the wind turbine generator is also improved, through studying the control methods for wind turbine generators, the method for dynamically adjusting the set parameters is provided, the problem of substandard wind turbine generator wind speed-power curve caused by self characteristic difference or environmental factor difference of the wind turbine generator can be solved or alleviated, and further, optimal utilization of the wind turbine generator to wind energy is ensured.
Description
Technical field
The present invention relates to the control field of MW class wind turbine group, be specifically related to a kind of speed-changing oar-changing Wind turbines optimizing power method for controlling curves.
Background technique
The air-blower control research initial stage, the stationarity of blower fan, Security are controlled as primarily capturing target, control power curve method is not mentioned top priority, along with power curve problem is outstanding day by day, the attention controlled just is transferred, be exactly the comprehensive analysis to our factory blower fan below, propose a kind of way of Dynamic parameter adjustment, in order to solve the power curve problem of Wind turbines.
State Intellectual Property Office was on 07 16th, 2014, disclosing a publication number is CN103925155A, name is called the patent of invention of " a kind of self-adapting detecting method of Wind turbines output power exception ", this summary of the invention relates to a kind of self-adapting detecting method of Wind turbines output power exception, it comprises the following steps: collect the running of wind generating set initial stage and running state is good time Wind turbines output power corresponding to different wind speed, and it can be used as master sample data, Criterion Sample Storehouse; Adopt Shepard interpolation method, set up the Wind turbines output power weinberg salam model based on wind speed information; Air speed data in Wind turbines status monitoring is substituted into Wind turbines output power weinberg salam model, calculate the reference value of Wind turbines output power under current wind speed, according to the measured value of this reference value and Wind turbines output power, calculate the power deviation under the current wind speed of Wind turbines; Power deviation and the power deviation threshold value preset are compared, if power deviation is greater than default power deviation threshold value, then shows the output power exception of Wind turbines and report to the police.
Blower fan master controller setup parameter-rated power, rated torque, rated speed, blower fan is when normal power generation, the energy that blade absorbs is directly proportional to power, but because the mechanical property of blower interior is different, same optimum configurations likely produces different effects, such as, under 1# blower fan meets ambient conditions, just can completely send out in rated torque and rated speed, 2# blower fan to cause under same parameter and ambient conditions full not sending out due to its mechanical property and corresponding deviation, if extraneous factor can be thought of as identical temporarily, when same condition in order to optimize the wind speed power curve of blower fan, parameter is between setting range, following solution is proposed.
Summary of the invention
The present invention is MW class speed-changing oar-changing double-fed wind power generator group wind speed power curve optimal control method, by dynamic adjustments nominal parameter in control procedure, such as: rated power, rated torque, rated speed etc., make the utilization ratio of Wind turbines to wind energy reach optimum, also bonding Fans power curve and other blower fan keep in the same horizontal line simultaneously.Reach the effect optimizing power of fan curve simultaneously.
Technical solution of the present invention is as follows:
A kind of speed-changing oar-changing Wind turbines optimizing power method for controlling curves, is characterized in that comprising the following steps:
(1) mean wind velocity of 10 minutes when judging that running of wind generating set generates electricity, if unit 10 minutes mean wind velocitys are stabilized in completely to send out wind speed or be greater than completely send out wind speed always, unit is not when carrying out the meritorious management of wind field, if actual active power is all the time lower than unit power-handling capability, can this typhoon group of motors parameter matching of preliminary judgement improper, need to carry out dynamic adjustments.
(2) under the prerequisite considering fan safe, when the parameter of master control inner setting being applied in controlling method, dynamic conditioning is carried out.In order to ensure that rotation speed of fan controls, the rated torque setting value of first step adjustment unit, carries out dynamic adjustments according to certain step-length, the active power simultaneously during real-time tracking set steady; Second step is when moment of torsion is adjusted to maximum adjusted value, calculate the deviation of current power of fan and rated power, rated speed during adjustment blower fan Operation at full power, if rotating speed is when setting rated speed maximum value when completely sending out (nominal speed range 1750rpm/min-1900rpm/min), then do not regulate rated speed to set, otherwise speed dynamic adjustment is up to 1900rpm/min.
(3) blower fan is because of after disorderly closedown or artificial manual shut-down, and controlling method pre-set parameter is reduced to master controller initial setting parameter, entering dynamic adjustments condition need rejudge blower fan current operating situation at every turn, guarantees the Security of blower fan.
(4) Wind turbines grid-connected after before completely sending out wind speed, nominal parameter does not need amendment, completely sending out near wind speed, due to the response characteristic of unit own and the deviation of mechanical property, indivedual blower fan cannot ensure the optimum rate of utilization to wind energy within the scope of theory setting nominal parameter, causes energy to run off, and unit is in inefficient utilization state for a long time, in the long run, the wind speed power curve of blower fan is just difficult to reach requirement.Under the prerequisite ensureing aerogenerator unit safe, by the setting of dynamic adjustments rating value, judge whether parameter current meets control overflow and carry out dynamic adjustments according to actual conditions.
(5) continue lower than rated power operation if blower fan is completely sent out in wind speed range at Theoretical Design, nominal parameter blower fan master control set carries out dynamic micro-adjustments, according to the setting value of certain proportionate relationship dynamic conditioning rated torque and rated speed, and then the active power that adjustment Wind turbines sends, improve the wind speed power curve of unit.
In practice, the setting parameter of wind power generating set, Wind turbines rated torque setting value setting range is set as 8400Nm-9030Nm (Maximum Torque setting range is for 11000Nm) with master control system, rated speed pre-set parameter setting range is 1750rpm/min-1900rpm/min (maximum (top) speed setting range is 2000rpm/min), and Rated Power Parameters setting value is 1500KW-1560KW (maximum rated generated output range is 2000KW).
The Protection parameters value of master controller setting will not change, and the newly-built intermediate variable of program-code performs as controlling method and calls, and specific measures for implementation are:
(1) judge within 10 minutes, on average completely to send out wind speed when wind speed (for 13m/s) is completely sent out in design, whether the error between the active power of Wind turbines and rated power setting value is more than 50Kw, that is: power difference (△ P)=rated power setting value (P volume)-current power actual value (P is real), if condition meets perform the control of power curve optimization method, dynamic adjustments nominal torque setting value; If 10 minutes mean wind velocitys be greater than certain value (for 16m/s) or Wind turbines because of fault stop generating time, method intermediate variable is reduced to initiating master setting value.
(2) when dynamic state of parameters regularization condition meets, first dynamic conditioning moment of torsion, its controlling method is that current setting torque value and torque setting scope maximum value 9030Nm compare calculated difference, that is: torque difference (△ T)=9030-current nominal torque setting value (T volume), combine the power difference (△ P) calculated in (1) again and do the adjustment of corresponding dynamic torque, method is as follows:
The rated torque value (T volume) calculated=K(△ P/ △ T) * 10+T volume, wherein K is control system torque damping coefficient, and the different blower control method of damping constant is different to the damping ratio of moment of torsion, determines damping coefficient according to torque system response.△ P is power difference, and △ T is torque difference, and T volume is master control rated torque pre-set parameter.In order to alleviate moment of torsion each cycle material calculation excessive and cause Wind turbines moment of torsion instability regulate, by this formula, steadily rated torque setting value is improved, 10 program control cycles of each control interval, avoid in parameter tuning process, occurring larger power swing, if adjustment process power meets the demands, then maintain current torque setting value, do not carrying out dynamic adjustments, if regulating power reaches not yet.
(3) adjustment for rotating speed needs exercise due diligence, Fan Regulation is avoided to occur hypervelocity, after torque adjustment completes in a period of time, judge whether rotating speed also needs to carry out dynamic adjustments according to actual conditions again, if initial nominal tachometer value is set to 1900rpm/min, then do not carry out rotational speed regulation.Otherwise, rotating speed difference (△ V)=1900-current nominal torque setting value (V volume), do corresponding Dynamic Speed in conjunction with the power difference calculated in (1) (△ P) and regulate, method is as follows:
Rated torque value (V volume)=K (△ the V/10)+V volume calculated, wherein K is that control system rotating speed controls damping constant, the different blower control method of damping constant is different to the damping ratio of moment of torsion, damping coefficient is determined according to real system response, △ V is rotating speed difference, and V volume is master control rated speed setting value.In order to alleviate rotating speed each cycle material calculation excessive and cause Wind turbines instability regulate.By this formula, steadily rated speed setting value is improved, in 10 program control cycles of each control interval, avoid in parameter tuning process, occurring larger power swing.
beneficial effect of the present invention is as follows:
The object of the invention is to eliminate because the individual difference of Wind turbines causes the mismatch of parameter, and then remote-effects are to the power curve of single unit.By the parameter that dynamic adjustments master control inside has set, the method that is applied to controls, make unit carry out dynamically fullly sending out coupling reaching active power when wind speed is completely sent out in design, thus solve the nonconforming problem of the power of the assembling unit curve that perplexs because of the individual mechanical property difference of blower fan at present.Single unit wind speed-power curve being improved preferably, improving Wind turbines to completely sending out the utilization ratio of wind speed to wind energy, also for wind energy turbine set brings indirect profit simultaneously.
Accompanying drawing explanation
Fig. 1 is Wind turbines optimizing power method for controlling curves FB(flow block).
Embodiment
embodiment 1:
A kind of speed-changing oar-changing Wind turbines optimizing power method for controlling curves, is characterized in that comprising the following steps:
(1) mean wind velocity of 10 minutes when judging that running of wind generating set generates electricity, if unit 10 minutes mean wind velocitys are stabilized in completely to send out wind speed or be greater than completely send out wind speed always, unit is not when carrying out the meritorious management of wind field, if actual active power is all the time lower than unit power-handling capability, can preliminary judgement for this reason typhoon group of motors parameter matching improper extremely, need to carry out dynamic adjustments.
(2) under the prerequisite considering fan safe, the air-blower control parameter of master control inner setting is carried out real-time dynamic conditioning according to actual conditions.In order to ensure that rotation speed of fan controls, the rated torque setting value of first step adjustment unit, increase according to certain step-length, judge active power during set steady simultaneously, if rated torque parameter has been set as maximum rated tachometer value 9030Nm, then do not regulate rated torque to set, otherwise rated torque is set within the scope of 8400Nm-9030Nm carries out dynamic conditioning; Second step is adjusted to maximum adjusted value at moment of torsion, rated output deviation, rated speed during adjustment blower fan Operation at full power, if rated speed parameter has been set as maximum rated tachometer value 1900rpm/min, then do not regulate rated speed to set, otherwise rated speed is carried out dynamic conditioning at 1750rpm/min-1900rpm/min.
(3) blower fan is because of disorderly closedown or think that after manual shut-down, controlling method pre-set parameter is reduced to master controller setup parameter, and each entry condition need rejudge, and guarantees the Security of blower fan.
(4) Wind turbines grid-connected after before completely sending out wind speed, nominal parameter does not need amendment, completely sending out near wind speed, due to the response characteristic of unit own and the deviation of mechanical property, indivedual blower fan cannot ensure the optimum rate of utilization to wind energy within the scope of theory setting nominal parameter, causes energy to run off, and unit is in inefficient utilization state for a long time, in the long run, the wind speed power curve of blower fan is just difficult to reach requirement.Under the prerequisite ensureing aerogenerator unit safe, by the setting of dynamic adjustments rating value, judge whether parameter current meets control overflow and carry out dynamic adjustments according to actual conditions.
(5) continue lower than rated power operation if blower fan is completely sent out in wind speed range at Theoretical Design, nominal parameter blower fan master control set carries out dynamic micro-adjustments, according to the setting value of certain proportionate relationship dynamic conditioning rated torque and rated speed, and then the active power that adjustment Wind turbines sends, improve the wind speed power curve of unit.
With reference to the setting parameter of certain wind power generating set, between master control system setting Wind turbines rated torque range of set value 8400Nm-9030Nm (Maximum Torque setting range is for 11000Nm), between rated speed pre-set parameter setting range 1750rpm/min-1900rpm/min (maximum (top) speed setting range is 2000rpm/min), Rated Power Parameters setting value is between 1500KW-1560KW (maximum rated generated output range is 2000KW), there is calculated difference in actual power power and theoretical power (horse-power) curve, suppose that rated torque is set as 8400Nm, rated speed is set as 1790rpm/min, rated power setting 1520KW, if this blower fan cannot reach full hair-like state completely sending out in wind speed interval, namely by the dynamic regulating method in the present invention, the first step is carried out torque and carry out dynamic adjustments in range ability, blower fan generated output is increased, if power does not still meet the demands need carry out second step adjustment, second step carries out rotational speed regulation, carries out dynamic adjustments according in the interval of rated speed setting parameter, and blower fan generated output is got a promotion, the power of the assembling unit more presses close to contract standard power curve.
embodiment 2:
A kind of speed-changing oar-changing Wind turbines optimizing power method for controlling curves, is characterized in that comprising the following steps:
(1) mean wind velocity of 10 minutes when judging that running of wind generating set generates electricity, if unit 10 minutes mean wind velocitys are stabilized in completely to send out wind speed or be greater than completely send out wind speed always, unit is not when carrying out the meritorious management of wind field, if actual active power is all the time lower than unit power-handling capability, can preliminary judgement for this reason typhoon group of motors parameter matching improper extremely, need to carry out dynamic adjustments.
(2) under the prerequisite considering fan safe, the air-blower control parameter of master control inner setting is carried out real-time dynamic conditioning according to actual conditions.If unit rated torque has been set to maximum adjusted value, there is calculation deviation in unit generation power and rated power, rated speed during adjustment blower fan Operation at full power, if rated speed parameter has been set as maximum rated tachometer value 1900rpm/min, then do not regulate rated speed to set, otherwise rated speed is carried out dynamic conditioning at 1750rpm/min-1900rpm/min.
(3) blower fan is because of disorderly closedown or think that after manual shut-down, controlling method pre-set parameter is reduced to master controller setup parameter, and each entry condition need rejudge, and guarantees the Security of blower fan.
(4) Wind turbines grid-connected after before completely sending out wind speed, nominal parameter does not need amendment, completely sending out near wind speed, due to the response characteristic of unit own and the deviation of mechanical property, indivedual blower fan cannot ensure the optimum rate of utilization to wind energy within the scope of theory setting nominal parameter, causes energy to run off, and unit is in inefficient utilization state for a long time, in the long run, the wind speed power curve of blower fan is just difficult to reach requirement.Under the prerequisite ensureing aerogenerator unit safe, by the setting of dynamic adjustments rating value, judge whether parameter current meets control overflow and carry out dynamic adjustments according to actual conditions.
(5) continue lower than rated power operation if blower fan is completely sent out in wind speed range at Theoretical Design, nominal parameter blower fan master control set carries out dynamic micro-adjustments, according to the setting value of certain proportionate relationship dynamic conditioning rated speed, and then the active power that adjustment Wind turbines sends, improve the wind speed power curve of unit.
With reference to the setting parameter of certain wind power generating set, master control system setting Wind turbines rated torque setting value setting range 9030Nm (rated torque setting range is 8400Nm-9030Nm), between rated speed pre-set parameter setting range 1750rpm/min-1900rpm/min (maximum (top) speed setting range is 2000rpm/min), Rated Power Parameters setting value is between 1500KW-1560KW (maximum rated generated output range is 2000KW), there is calculated difference in actual power power and theoretical power (horse-power) curve, suppose that rated speed is set as 1790rpm/min, rated power setting 1520KW, if this blower fan cannot reach full hair-like state completely sending out in wind speed interval, namely by the dynamic regulating method in the present invention, dynamic adjustments is carried out according in the interval of rated speed setting parameter, blower fan generated output is got a promotion, more close to blower fan contract standard power curve.
embodiment 3:
A kind of speed-changing oar-changing Wind turbines optimizing power method for controlling curves, is characterized in that comprising the following steps:
(1) mean wind velocity of 10 minutes when judging that running of wind generating set generates electricity, if unit 10 minutes mean wind velocitys are stabilized in completely to send out wind speed or be greater than completely send out wind speed always, unit is not when carrying out the meritorious management of wind field, if actual active power is all the time lower than unit power-handling capability, can preliminary judgement for this reason typhoon group of motors parameter matching improper extremely, need to carry out dynamic adjustments.
(2) under the prerequisite considering fan safe, the air-blower control parameter of master control inner setting is carried out real-time dynamic conditioning according to actual conditions.The rated torque setting value of unit, rated speed setting value have set maximum nominal torque value (9030Nm), maximum rated tachometer value (1900rpm/min) all, if setting value has been maximum rated 1560KW(Rated Power Parameters setting value to rated power is 1500KW-1560KW), then do not regulate rated speed to set, otherwise rated power is carried out dynamic conditioning at 1500KW-1560KW.
(3) blower fan is because of disorderly closedown or think that after manual shut-down, controlling method pre-set parameter is reduced to master controller setup parameter, and each entry condition need rejudge, and guarantees the Security of blower fan.
(4) Wind turbines grid-connected after before completely sending out wind speed, nominal parameter does not need amendment, completely sending out near wind speed, due to the response characteristic of unit own and the deviation of mechanical property, indivedual blower fan cannot ensure the optimum rate of utilization to wind energy within the scope of theory setting nominal parameter, causes energy to run off, and unit is in inefficient utilization state for a long time, in the long run, the wind speed power curve of blower fan is just difficult to reach requirement.Under the prerequisite ensureing aerogenerator unit safe, by the setting of dynamic adjustments rating value, judge whether parameter current meets control overflow and carry out dynamic adjustments according to actual conditions.
(5) continue lower than rated power operation if blower fan is completely sent out in wind speed range at Theoretical Design, nominal parameter blower fan master control set carries out dynamic micro-adjustments, according to the setting value of certain proportionate relationship dynamic conditioning rated torque and rated speed, and then the active power that adjustment Wind turbines sends, improve the wind speed power curve of unit.
With reference to the setting parameter of certain wind power generating set, Wind turbines rated torque setting value setting range is set as 8400Nm-9030Nm (Maximum Torque setting range is for 11000Nm) with master control system, rated speed pre-set parameter setting range is 1750rpm/min-1900rpm/min (maximum (top) speed setting range is 2000rpm/min), Rated Power Parameters setting value is 1500KW-1560KW (maximum rated generated output range is 2000KW) is example, suppose that wind power generating set rated torque is set as 9030Nm, rated speed is set as 1900rpm/min, rated power is set as 1520KW, if this blower fan cannot reach full hair-like state completely sending out in wind speed interval, namely by the dynamic regulating method in the present invention, dynamic adjustments is carried out according in the interval of Rated Power Parameters setting, blower fan generated output is got a promotion, more close to blower fan contract standard power curve.
Further, the Protection parameters value of master controller setting will not change, and the newly-built intermediate variable of program-code performs as controlling method and calls, and specific measures for implementation are:
(1) judge within 10 minutes, on average completely to send out wind speed when wind speed (for 13m/s) is completely sent out in design, whether the error between the active power of Wind turbines and rated power setting value is more than 50Kw, that is: power difference (△ P)=rated power setting value (P volume)-current power actual value (P is real), if condition meets perform the control of power curve optimization method, dynamic adjustments nominal torque setting value; If 10 minutes mean wind velocitys be greater than certain value (for 16m/s) or Wind turbines because of fault stop generating time, method intermediate variable is reduced to initiating master setting value.
(2) when dynamic state of parameters regularization condition meets, first dynamic conditioning moment of torsion, its controlling method is that current setting torque value and torque setting scope maximum value 9030Nm compare calculated difference, that is: torque difference (△ T)=9030-current nominal torque setting value (T volume), combine the power difference (△ P) calculated in (1) again and do the adjustment of corresponding dynamic torque, method is as follows:
The rated torque value (T volume) calculated=K(△ P/ △ T) * 10+T volume, wherein K is control system torque damping coefficient, and the different blower control method of damping constant is different to the damping ratio of moment of torsion, determines damping coefficient according to torque system response.△ P is power difference, and △ T is torque difference, and T volume is master control rated torque pre-set parameter.In order to alleviate moment of torsion each cycle material calculation excessive and cause Wind turbines moment of torsion instability regulate, by this formula, steadily rated torque setting value is improved, 10 program control cycles of each control interval, avoid in parameter tuning process, occurring larger power swing, if adjustment process power meets the demands, then maintain current torque setting value, do not carrying out dynamic adjustments, if regulating power reaches not yet.
(3) adjustment for rotating speed needs exercise due diligence, Fan Regulation is avoided to occur hypervelocity, after torque adjustment completes in a period of time, judge whether rotating speed also needs to carry out dynamic adjustments according to actual conditions again, if initial nominal tachometer value is set to 1900rpm/min, then do not carry out rotational speed regulation.Otherwise, rotating speed difference (△ V)=1900-current nominal speed setting value (V volume), do corresponding Dynamic Speed in conjunction with the power difference calculated in (1) (△ P) and regulate, method is as follows:
Rated torque value (V volume)=K (△ the V/10)+V volume calculated, wherein K is that control system rotating speed controls damping constant, the different blower control method of damping constant is different to the damping ratio of moment of torsion, damping coefficient is determined according to real system response, △ V is rotating speed difference, and V volume is master control rated speed setting value.In order to alleviate rotating speed each cycle material calculation excessive and cause Wind turbines instability regulate.By this formula, steadily rated speed setting value is improved, in 10 program control cycles of each control interval, avoid in parameter tuning process, occurring larger power swing.
(4) when rated torque and rated speed are all without adjustment space, if initial nominal performance number is set to 1560KW, then rotational speed regulation is not carried out.Otherwise, rotating speed difference (△ P)=1560-current nominal set value of the power (P volume), do corresponding Dynamic Speed in conjunction with the power difference calculated in (1) (△ P) and regulate, method is as follows:
Rated torque value (P volume)=K (△ the P/10)+P volume calculated, wherein K is that control system power controls damping constant, and determine damping coefficient according to real system response, △ P is rotating speed difference, and P volume is master control rated power setting value.In order to alleviate power each cycle material calculation excessive and cause Wind turbines instability regulate.By this formula, steadily rated power setting value is improved, in 10 program control cycles of each control interval, avoid in parameter tuning process, occurring larger power swing.
Claims (5)
1. a speed-changing oar-changing Wind turbines optimizing power method for controlling curves, is characterized in that comprising the following steps:
(1) mean wind velocity of 10 minutes when judging that running of wind generating set generates electricity, if unit 10 minutes mean wind velocitys are stabilized in completely to send out wind speed or be greater than completely send out wind speed always, unit is not when carrying out the meritorious management of wind field, if actual active power is all the time lower than unit power-handling capability, can this typhoon group of motors parameter matching of preliminary judgement improper, need to carry out dynamic adjustments;
(2) under the prerequisite considering fan safe, dynamic conditioning is carried out when the parameter of master control inner setting being applied in controlling method, in order to ensure that rotation speed of fan controls, the rated torque setting value of first step adjustment unit, increase according to certain step-length, judge active power during set steady simultaneously; Second step is adjusted to maximum adjusted value at moment of torsion, rated output deviation, and rated speed during adjustment blower fan Operation at full power, if rotating speed completely sends out rated speed maximum value rotating speed in setting, does not then regulate rated speed to set, otherwise speed dynamic adjusted maximum; 3rd adjustment unit rated power setting value, judges active power during set steady simultaneously;
(3) blower fan is because of disorderly closedown or think that after manual shut-down, controlling method pre-set parameter is reduced to master controller setup parameter, and each entry condition need rejudge, and guarantees the Security of blower fan;
(4) Wind turbines grid-connected after before completely sending out wind speed, nominal parameter does not need amendment, completely sending out near wind speed, due to the response characteristic of unit own and the deviation of mechanical property, indivedual blower fan cannot ensure the optimum rate of utilization to wind energy within the scope of theory setting nominal parameter, energy is caused to run off, if unit is in inefficient utilization state for a long time, the wind speed power curve of blower fan is just difficult to reach requirement, under the prerequisite ensureing aerogenerator unit safe, by the setting of dynamic adjustments rating value, judge whether parameter current meets control overflow and carry out dynamic adjustments according to actual conditions,
(5) continue lower than rated power operation if blower fan is completely sent out in wind speed range at Theoretical Design, nominal parameter blower fan master control set carries out dynamic micro-adjustments, according to the setting value of certain proportionate relationship dynamic conditioning rated torque and rated speed, and then the active power that adjustment Wind turbines sends, improve the wind speed power curve of unit.
2. a kind of speed-changing oar-changing Wind turbines optimizing power method for controlling curves according to claim 1 its levy and be also to comprise: the Protection parameters value of master controller setting will not change; the newly-built intermediate variable of program-code performs as controlling method and calls, and its concrete methods && steps of implementation is:
(1) judge within 10 minutes, on average completely to send out wind speed when wind speed 13m/s is completely sent out in design, whether the error between the active power of Wind turbines and rated power setting value is more than 50Kw, that is: power difference (△ P)=rated power setting value (P volume)-current power actual value (P is real), if condition meets perform the control of power curve optimization method, dynamic adjustments nominal torque setting value; If 10 minutes mean wind velocitys be greater than with during 16m/s or Wind turbines because of fault stop generating time, method intermediate variable is reduced to initiating master setting value;
(2) when dynamic state of parameters regularization condition meets, first dynamic conditioning moment of torsion, its controlling method is that current setting torque value and 9030Nm compare and calculate difference, that is: torque difference (△ T)=9030-current nominal torque setting value (T volume), combine the power difference (△ P) calculated in (1) again and do the adjustment of corresponding dynamic torque, method is as follows:
The rated torque value (T changes) calculated=K(△ P/ △ T) * 10+T volume, wherein K is frequency variator torque system damping constant, △ P is power difference, △ T is torque difference, T volume is master control rated torque pre-set parameter, in order to alleviate moment of torsion each cycle material calculation excessive and cause Wind turbines moment of torsion instability regulate, by this formula, steadily rated torque setting value is improved, 10 program control cycles of each control interval, avoid in parameter tuning process, occurring larger power swing, if adjustment process power meets the demands, then maintain current torque setting value, do not carrying out dynamic adjustments,
(3) adjustment for rotating speed needs careful accepting, Fan Regulation is avoided to occur hypervelocity, after torque adjustment completes in a period of time, judge whether rotating speed also needs to carry out dynamic adjustments according to actual conditions again, if initial nominal tachometer value has reached rated speed maximum value and the 1900rpm/min of setting, then do not carry out rotational speed regulation;
(4) otherwise, rotating speed difference (△ V)=1900-current nominal torque setting value (V volume), in conjunction with the power difference calculated in (1) (△ P) do corresponding dynamic torque regulate, method is as follows:
Rated torque value (V changes)=K (△ the V/10)+V volume calculated, wherein K is rotary speed system damping constant, and △ V is rotating speed difference, and V volume is master control rated speed setting value;
(5) for Rated Power Parameters setting, when beginning power-handling capability has reached rated power maximum value and the 1560KW of setting, then rotational speed regulation has not been carried out;
(6) otherwise, power difference (△ P)=1560-current nominal set value of the power (P volume), in conjunction with the power difference calculated in (1) do corresponding dynamic torque regulate, method is as follows:
Rated torque value (P changes)=K (△ the P/10)+P volume calculated, wherein K is system damping coefficient, and △ P is power difference, and P volume is master control rated power setting value.
3. a kind of speed-changing oar-changing Wind turbines optimizing power method for controlling curves according to claim 1 its levy and be also to comprise: described Wind turbines rated torque setting value setting range is 8400Nm-9030Nm.
4. a kind of speed-changing oar-changing Wind turbines optimizing power method for controlling curves according to claim 1 its levy and be also to comprise: described Wind turbines rated speed pre-set parameter setting range is 1750rpm/min-1900rpm/min.
5. a kind of speed-changing oar-changing Wind turbines optimizing power method for controlling curves according to claim 1 its levy and be also to comprise: described Wind turbines Rated Power Parameters setting value is 1500KW-1560KW.
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Cited By (8)
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| CN111720265A (en) * | 2019-03-21 | 2020-09-29 | 北京金风科创风电设备有限公司 | Wind turbine generator system comprising multiple windings, control method and control device thereof |
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| CN105736253A (en) * | 2016-02-04 | 2016-07-06 | 华电电力科学研究院 | Method for judging state of wind turbine generator on basis of air speed and power and calculating energy utilization ratio |
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| CN107100795A (en) * | 2017-07-05 | 2017-08-29 | 四川东方电气自动控制工程有限公司 | A kind of low wind speed apparatus for lower wind generating set MPPT self-adaptation control methods |
| CN109973302A (en) * | 2017-12-28 | 2019-07-05 | 北京金风科创风电设备有限公司 | Power limiting control method and device for wind generating set |
| CN109973302B (en) * | 2017-12-28 | 2020-05-05 | 北京金风科创风电设备有限公司 | Power limiting control method and device for wind generating set |
| CN111720265A (en) * | 2019-03-21 | 2020-09-29 | 北京金风科创风电设备有限公司 | Wind turbine generator system comprising multiple windings, control method and control device thereof |
| CN111720265B (en) * | 2019-03-21 | 2023-09-05 | 北京金风科创风电设备有限公司 | Wind power generator set comprising multiple windings, control method thereof and control device thereof |
| CN112943528A (en) * | 2019-11-26 | 2021-06-11 | 新疆金风科技股份有限公司 | Control method and device of wind generating set |
| CN111322200A (en) * | 2020-04-03 | 2020-06-23 | 上海电气风电集团股份有限公司 | Control method and control device of wind generating set |
| CN111322200B (en) * | 2020-04-03 | 2022-03-01 | 上海电气风电集团股份有限公司 | Control method and control device of wind generating set |
| CN111894815A (en) * | 2020-07-29 | 2020-11-06 | 上海电气风电集团股份有限公司 | Method and device for determining power curve of wind generating set and computer readable storage medium |
| CN111894815B (en) * | 2020-07-29 | 2021-11-02 | 上海电气风电集团股份有限公司 | Method and device for determining power curve of wind generating set and computer readable storage medium |
| CN114251235A (en) * | 2020-09-22 | 2022-03-29 | 新疆金风科技股份有限公司 | Method and device for determining relation between rotating speed and torque and capturing wind energy |
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