CN104184171A - Wind power plant layer active power control system and method - Google Patents
Wind power plant layer active power control system and method Download PDFInfo
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- CN104184171A CN104184171A CN201410398436.0A CN201410398436A CN104184171A CN 104184171 A CN104184171 A CN 104184171A CN 201410398436 A CN201410398436 A CN 201410398436A CN 104184171 A CN104184171 A CN 104184171A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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Abstract
The invention discloses a wind power plant layer active power control system which comprises a power setting device and a power distributing device. The power setting device is used for classifying units according to unit operation information, collected by a wind power plant supervisory control and data acquisition (SCADA) system, of wind generating sets and super-short-term prediction power information obtained form a wind power prediction system, receiving power instructions issued by a superior dispatching system, obtaining setting instructions and a control circle of power to be distributed, judging whether the output needs to be increased or reduced in a wind field, and sending instructions whether the output is conducted or not to the corresponding power distributing device according to a judged handling pattern. The power distributing device is used for issuing control instructions to a fan control system according to current unit classification information and set power distribution strategies, and the fan control system is used for controlling all classes of units. The wind power plant layer active power control system can well control and analyze the active power of a wind power plant so as to ensure the safe and reliable operation of the wind power plant.
Description
Technical field
The present invention relates to wind-powered electricity generation generating correlation technique, relate in particular to a kind of wind energy turbine set layer active power control system and method.
Background technology
Thereby wind energy turbine set is utilized wind energy and is dealt into the object with wind generating in conjunction with a series of generating projects, is the noble and unsullied electricity-generating method of a kind of environmental protection.The principle of wind power generation, is to utilize wind-force to drive air vane rotation, then sees through booster engine by the speed lifting of rotation, impels generator generating; It by head, turn, empennage, blade form, functions is: blade is used for accepting wind-force and transfers electric energy to by head; Thereby empennage makes blade facing to the direction of the wind comes from, obtain maximum wind energy all the time; Turn and can make head rotate neatly to realize the function that empennage is adjusted direction; The rotor of head is permanent magnet, and stator winding cutting magnetic line produces electric energy.Wind-driven generator because of air quantity unstable, therefore its output is the alternating current that 13～25V changes, must be through charger rectification, then to accumulator jar charging, the electric energy that wind-driven generator is produced becomes chemical energy.Then with the inverter that has protective circuit, the chemical energy in storage battery is transformed into alternating current 220V civil power, guarantee is stable to be used.
But at present, large-scale wind power grid-connected given dispatching of power netwoks, peak regulation brings very large challenge, in the wind energy turbine set access electrical network regulation of national grid promulgation in 2009, explicitly point out wind energy turbine set and must possess active power regulation ability, and control its active power output according to the instruction of power system dispatching center, to guarantee that wind energy turbine set peak power output and power variation rate are no more than control centre's designated value, because wind energy turbine set has the dynamic change on time and space, the dynamic variation characteristic of this complexity requires wind energy turbine set management system to possess good control function and analytic function to guarantee the safe and reliable operation of wind energy turbine set.
Summary of the invention
Below provide the simplification of the various aspects of claimed theme is summarized to try hard to provide the basic comprehension to these aspects.This general introduction is not that the detailed of all aspects that contemplate scanned, and neither be intended to point out out key or decisive key element, the non-scope that is intended to describe these aspects yet.Its sole purpose is some concepts that the form simplified provides disclosed aspect, as the preorder in greater detail providing after a while.
According to one side, a kind of wind energy turbine set layer active power control system has been described herein, comprise power setting device and power distribution unit, wherein, described power setting device, for according to wind energy turbine set monitoring and data acquisition (SCADA) system acquisition to the unit operation information of wind turbine generator and the ultra-short term predicted power information that obtains from wind power prediction system by computer-assisted classification; Receive the power instruction that higher level's dispatching patcher issues, obtain the power to be allocated of setting command and a control cycle, whether judgement wind field need to rise from power and still fall and exert oneself, according to the tupe of judgement, will exert oneself and refer to send to corresponding described power distribution unit; Described power distribution unit, for according to the power distribution strategies of current computer-assisted classification information and setting, is issued to blower fan control system by control command, by described blower fan control system, controls all kinds of units.
Preferably, described power setting device, for according to wind energy turbine set monitoring and data acquisition (SCADA) system acquisition to the unit operation information of wind turbine generator and the ultra-short term predicted power information obtaining from wind power prediction system computer-assisted classification is specifically comprised: for unit being divided into six classes: the 1st class is normal limit Power operation unit; The 2nd class is for normally can not limit Power operation unit to carry out only the unit of downrating by halt mode; The 3rd class comprises unit that fault has been recovered and the unit of idle running for next control cycle unit to be started; The 4th class waits to shut down the unit of maintenance for next control cycle; The unit of the 5th class for having shut down; The 6th class is uncontrollable unit, because communication failure cannot be accepted the unit that control system is controlled.
Preferably, described power setting device, also controls allocation algorithm for establish active power based on computer-assisted classification result, and described active power is controlled allocation algorithm and comprised power per liter algorithm and fall power algorithm.
Preferably, described power setting device, also for judging that given power target value when large, judges that in wind energy turbine set, aggregate capacity needs rising than the real value of sending out of whole audience power, described power distribution unit, also for carrying out power division according to the judged result of described power setting device and above grouping to all kinds of blower fans, wherein, described power distribution unit, also for all kinds of blower fans being carried out to power division according to the judged result of described power setting device and above grouping, specifically comprise: due to the 4th class unit at next control cycle all in stopped status, described power distribution unit is not for carrying out power division to described the 4th class unit, the 6th class unit is uncontrollable, cannot assign power instruction, power instruction to be allocated removes the power change values in described the 6th next cycle of class unit, because communication failure appears in the 6th class unit, described wind energy turbine set monitoring cannot collect related power information with data acquisition (SCADA) system, therefore described wind power prediction system is carried out predicted power according to the wind speed of next period forecasting with reference to wind speed wattmeter, can obtain thus and expect the gross power promoting this week, described power distribution unit is for giving the 1st by gained power division to be allocated, 2, 3 class units, concrete distribution method is as follows: described power distribution unit, for first calculating the power per liter nargin of the 1st class unit, if the power per liter nargin of the 1st class unit is more than or equal to power to be allocated, without regulating other units, the 1st class unit can be increased to watt level after limit power and sorts from high to low by cancelling, and cancel successively and limit power, and compare with the value that needs raise until after cumulative cancellation limit power increment reach or approach the power of required lifting, according to lacked power, from remaining unit, choose the unit that power is suitable and cancel limit power, if the power per liter nargin of the 1st class unit is less than power to be allocated, calculate the power margin that all the 3rd classes can promote after starting unit starting, if what add the 1st class unit can be more than or equal to power to be allocated after bring to power nargin, first cancel the limit power of all the 1st class units, then by the 3rd class unit by measure size sort from high to low, start successively unit, until increment reaches or approaches the power still lacking after limit power except cancelling after startup unit, according to lacked watt level, choose suitable unit starting, if what add the 1st class unit can be less than power to be allocated after bring to power nargin, determine that starting the 5th class has shut down unit, now need to start to start successively in order from prominent unit, and judge whether to meet power per liter requirement, if still can not meet, exit circulation, enter waiting process, then enter and detect next time and control.
Preferably, described power setting device, also for judging that given power target value is less than real value of whole audience power, needs to reduce exerting oneself of wind field, described power distribution unit, for all kinds of units preferentially being carried out to the order of power control, it is the 4th class unit, the 1st class unit, the 6th class unit, the 2nd class unit, so because the 5th class unit has been shut down and this time fallen power division and do not comprise such unit, and the 3rd next cycle of class unit was about to start, so power instruction to be allocated obtains instruction power to be reduced after will adding the power change values in next cycle, according to grouping information, power is distributed: described power setting device, the operation of shutting down the 4th class unit of Awaiting Overhaul for first stopping next control cycle obtains reducing power margin, if reducible power margin is more than or equal to command value, other blower fans are not controlled, if reducible power margin is less than command value, all the 1st class units of poll, and calculate the power margin that will reduce after all unit power limitations, if the power margin sum of two groups of unit energy minimizings is more than or equal to command value, by the gradient sequence from high in the end of all performance numbers that can reduce while limitting power unit to generate electricity according to minimum power, and successively unit is limit to power, and compare with the value that needs reduce, until cumulative falling performance number and shut down the power that the performance number of falling reaches or approach required reduction, suitable unit is limit power fine setting according to the power that still needs to reduce, from remaining unit, to choose power, if the power margin sum of two groups of unit energy minimizings is less than command value, the uncontrollable unit of the 6th class can be sent out to performance number gradient sequence from high to low by next cycle, shut down successively, and compare with the value that needs reduce, until after shutdown group cumulative falling power reaches or approach the power that need fall, then at the uncontrollable unit being left, choose suitable compressor emergency shutdown according to lacked watt level, as cocycle, until accumulated value be more than or equal to the value surpassing just exit circulation enter waiting process, then detect next time and control.
According on the other hand, a kind of wind energy turbine set layer active power control method is described herein, wherein, described method comprises: wind energy turbine set layer active power control system according to wind energy turbine set monitoring and data acquisition (SCADA) system acquisition to the unit operation information of wind turbine generator and the ultra-short term predicted power information that obtains from wind power prediction system by computer-assisted classification; Described wind energy turbine set layer active power control system receives the power instruction that higher level's dispatching patcher issues, and obtains the power to be allocated of setting command and a control cycle, and judgement wind field need to rise from power and still fall and exert oneself; Described wind energy turbine set layer active power control system, according to the power distribution strategies of current computer-assisted classification information and setting, is issued to blower fan control system by control command, by described blower fan control system, controls all kinds of units.
Preferably, described wind energy turbine set layer active power control system according to wind energy turbine set monitoring and data acquisition (SCADA) system acquisition to the unit operation information of wind turbine generator and the ultra-short term predicted power information obtaining from wind power prediction system computer-assisted classification is specifically comprised: described wind energy turbine set layer active power control system is divided into six classes by unit: the 1st class is normal limit Power operation unit; The 2nd class is for normally can not limit Power operation unit to carry out only the unit of downrating by halt mode; The 3rd class comprises unit that fault has been recovered and the unit of idle running for next control cycle unit to be started; The 4th class waits to shut down the unit of maintenance for next control cycle; The unit of the 5th class for having shut down; The 6th class is uncontrollable unit, because communication failure cannot be accepted the unit that control system is controlled.
Preferably, described method also comprises: based on computer-assisted classification result, establish active power and control allocation algorithm, described active power is controlled allocation algorithm and comprised power per liter algorithm and fall power algorithm.
Preferably, described method also comprises: judge when given power target value is larger than real value of whole audience power, judge that in wind energy turbine set, aggregate capacity needs to raise, according to judged result and above grouping, all kinds of blower fans are carried out to power division, wherein, describedly according to described judged result and above grouping, all kinds of blower fans are carried out to power division and specifically comprise: due to the 4th class unit at next control cycle all in stopped status, described the 4th class unit is not carried out to power division, the 6th class unit is uncontrollable, cannot assign power instruction, power instruction to be allocated removes the power change values in described the 6th next cycle of class unit, because communication failure appears in the 6th class unit, described wind energy turbine set monitoring cannot collect related power information with data acquisition (SCADA) system, therefore described wind power prediction system is carried out predicted power according to the wind speed of next period forecasting with reference to wind speed wattmeter, can obtain thus and expect the gross power promoting this week, by gained power division to be allocated, give the 1st, 2, 3 class units, concrete distribution method is as follows: the power per liter nargin of first calculating the 1st class unit, if the power per liter nargin of the 1st class unit is more than or equal to power to be allocated, without regulating other units, the 1st class unit can be increased to watt level after limit power and sorts from high to low by cancelling, and cancel successively and limit power, and compare with the value that needs raise until after cumulative cancellation limit power increment reach or approach the power of required lifting, according to lacked power, from remaining unit, choose the unit that power is suitable and cancel limit power, if the power per liter nargin of the 1st class unit is less than power to be allocated, calculate the power margin that all the 3rd classes can promote after starting unit starting, if what add the 1st class unit can be more than or equal to power to be allocated after bring to power nargin, first cancel the limit power of all the 1st class units, then by the 3rd class unit by measure size sort from high to low, start successively unit, until increment reaches or approaches the power still lacking after limit power except cancelling after startup unit, according to lacked watt level, choose suitable unit starting, if what add the 1st class unit can be less than power to be allocated after bring to power nargin, determine that starting the 5th class has shut down unit, now need to start to start successively in order from prominent unit, and judge whether to meet power per liter requirement, if still can not meet, exit circulation, enter waiting process, then enter and detect next time and control.
Preferably, describedly according to the judged result of described power setting device and above grouping, all kinds of blower fans are carried out to power division and specifically comprise: real to send out value little than whole audience power to judge given power target value, need to reduce exerting oneself of wind field, the order of all kinds of units preferentially being carried out to power control is the 4th class unit, the 1st class unit, the 6th class unit, the 2nd class unit, because so the 5th class unit has been shut down and is this time fallen power division and do not comprise such unit, and the 3rd next cycle of class unit was about to start, so power instruction to be allocated obtains instruction power to be reduced after will adding the power change values in next cycle, according to grouping information, power is distributed: the operation that first stops the 4th class unit of next control cycle shutdown Awaiting Overhaul obtains reducing power margin, if reducible power margin is more than or equal to command value, other blower fans is not controlled, if reducible power margin is less than command value, all the 1st class units of poll, and calculate the power margin that will reduce after all unit power limitations, if the power margin sum of two groups of unit energy minimizings is more than or equal to command value, by the gradient sequence from high in the end of all performance numbers that can reduce while limitting power unit to generate electricity according to minimum power, and successively unit is limit to power, and compare with the value that needs reduce, until cumulative falling performance number and shut down the power that the performance number of falling reaches or approach required reduction, suitable unit is limit power fine setting according to the power that still needs to reduce, from remaining unit, to choose power, if the power margin sum of two groups of unit energy minimizings is less than command value, the uncontrollable unit of the 6th class can be sent out to performance number gradient sequence from high to low by next cycle, shut down successively, and compare with the value that needs reduce, until after shutdown group cumulative falling power reaches or approach the power that need fall, then at the uncontrollable unit being left, choose suitable compressor emergency shutdown according to lacked watt level, as cocycle, until accumulated value be more than or equal to the value surpassing just exit circulation enter waiting process, then detect next time and control.
Compared with prior art, wind energy turbine set layer active power control system and method that the present invention describes, can be good the safe and reliable operation of wind energy turbine set is controlled and analyzed to guarantee to active power of wind power field.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, in referring to each figure of the following drawings of similar units, similar label, by example rather than by restriction, the present invention is described, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of wind energy turbine set layer control system structural representation of one embodiment of the invention;
Fig. 2 is the active power control method schematic flow sheet of a kind of wind energy turbine set layer active power control system of another embodiment of the present invention.
Embodiment
In below describing, in order to illustrate rather than in order limiting, to have proposed the detail such as particular system structure, interface, technology, to thoroughly cut, understand the present invention.Yet, not it will be clear to one skilled in the art that in there is no other embodiment of these details and can realize the present invention yet.In other situation, omit the detailed description to well-known device, circuit and method, in order to avoid unnecessary details hinders description of the invention.
As shown in Figure 1, a kind of wind energy turbine set layer control system structural representation for one embodiment of the invention, described wind energy turbine set layer control system comprises wind energy turbine set layer active power control system 10, blower fan control system 11, wind energy turbine set monitoring and data acquisition (SCADA) system 12, higher level's dispatching patcher 13 and wind power prediction system 14, wherein, described wind energy turbine set layer active power control system 10 further comprises power setting device 101 and the power distribution unit 102 of mutual communication connection.Wherein blower fan control system 11, wind energy turbine set monitoring and data acquisition (SCADA) system 12, and higher level's dispatching patcher 13 and wind power prediction system 14 communicate to connect with described wind energy turbine set layer active power control system 10 respectively.
Described power setting device 101, for the unit operation information of the wind turbine generator that collects according to the monitoring of described wind energy turbine set and data acquisition (SCADA) system 12 and the information such as ultra-short term predicted power that obtain from described wind power prediction system 14 by computer-assisted classification; Receive the power instruction that described higher level's dispatching patcher 13 issues, obtain the power to be allocated of setting command and a control cycle, whether judgement wind field need to rise from power and still fall and exert oneself, according to the tupe of judgement, will exert oneself and refer to send to corresponding described power distribution unit 102.
Described power distribution unit 102, for according to the power distribution strategies of current computer-assisted classification information and setting, is issued to described blower fan control system 11 by control command, by described blower fan control system 11, controls all kinds of units.
Described blower fan control system 11, for receiving the control command of described wind energy turbine set layer active power control system 10, carries out wind turbine generator control.
Described wind energy turbine set monitoring and data acquisition (SCADA) system 12, for gathering the unit operation information of wind turbine generator, state informations such as communication, fault, realtime power, and send to described wind energy turbine set layer active power control system 10.
Described higher level's dispatching patcher 13, for to described wind energy turbine set layer active power control system 10 transmit power command.
Described wind power prediction system 14, for predicting the information such as ultra-short term power, and sends to described wind energy turbine set layer active power control system 10.
As shown in Figure 2, be the active power control method schematic flow sheet of a kind of wind energy turbine set layer active power control system of another embodiment of the present invention.
Step 201, the unit operation information of the wind turbine generator that wind energy turbine set layer active power control system 10 collects according to described wind energy turbine set monitoring and data acquisition (SCADA) system 12 and the information such as ultra-short term predicted power that obtain from described wind power prediction system 14 are by computer-assisted classification.
Described wind energy turbine set layer active power control system 10 is divided into six classes by unit: the 1st class is normal limit Power operation unit; The 2nd class is for normally can not limit Power operation unit to carry out only the unit of downrating by halt mode; The 3rd class comprises unit that fault has been recovered and the unit of idle running for next control cycle unit to be started; The 4th class waits to shut down the unit of maintenance for next control cycle; The unit of the 5th class for having shut down; The 6th class is uncontrollable unit, because communication failure cannot be accepted the unit that control system is controlled.
Step 202, described wind energy turbine set layer active power control system 10 receives the power instruction that described higher level's dispatching patcher 13 issues, and obtains power setting command, obtains the power to be allocated of a control cycle, and judgement wind field need to rise from power and still fall and exert oneself.
Step 203, described wind energy turbine set layer active power control system 10 is according to the tupe of judgement, the power distribution strategies of current computer-assisted classification information and setting, is issued to described blower fan control system 11 by control command, by described blower fan control system 11, controls all kinds of units.
Described wind energy turbine set layer active power control system 10 is established active power based on computer-assisted classification result and is controlled allocation algorithm, is divided into power per liter algorithm and falls power algorithm.
The power per liter algorithm of described wind energy turbine set layer active power control system 10 is as described below.
When the given power target value of described power setting device 101 judgement is larger than the real value of sending out of whole audience power, judge that in wind energy turbine set, aggregate capacity needs to raise, described power distribution unit 102 carries out power division according to the judged result of described power setting device 101 and above grouping to all kinds of blower fans.For example due to the 4th class unit at next control cycle all in stopped status, therefore described the 4th class unit is not carried out to power division.The 6th class unit is uncontrollable, cannot assign power instruction, power instruction to be allocated will remove the power change values in described the 6th next cycle of class unit, because communication failure appears in the 6th class unit, described wind energy turbine set monitoring cannot collect related power information with data acquisition (SCADA) system 12, therefore described wind power prediction system 14 can be carried out predicted power with reference to wind speed wattmeter according to the wind speed of next period forecasting, can obtain thus and expect the gross power promoting this week, described power distribution unit 102 gives the 1st by gained power division to be allocated, 2, 3 class units, concrete distribution method is as follows: first described power distribution unit 102 calculates the power per liter nargin of the 1st class unit, if the power per liter nargin of the 1st class unit is more than or equal to power to be allocated, without regulating other units, the 1st class unit can be increased to watt level after limit power and sorts from high to low by cancelling, and cancel successively and limit power, and compare with the value that needs raise until after cumulative cancellation limit power increment reach or approach the power of required lifting, according to lacked power, from remaining unit, choose the unit that power is suitable and cancel limit power.If the power per liter nargin of the 1st class unit is less than power to be allocated, calculate the power margin that all the 3rd classes can promote after starting unit starting.If what add the 1st class unit can be more than or equal to power to be allocated after bring to power nargin, first cancel the limit power of all the 1st class units, then by the 3rd class unit by measure size sort from high to low, start successively unit, until increment reaches or approaches the power still lacking after limit power except cancelling after startup unit, according to lacked watt level, choose suitable unit starting.If what add the 1st class unit can be less than power to be allocated after bring to power nargin, determine that starting the 5th class has shut down unit.Now need to start to start successively in order from prominent unit, and judge whether to meet power per liter requirement, if still can not meet and exit circulation, enter waiting process, then enter and detect next time and control.
Described wind energy turbine set layer active power control system 10 to fall power algorithm as described below.
The given power target value of described power setting device 101 judgement is less than the real value of sending out of whole audience power; need to reduce exerting oneself of wind field; the order of all kinds of units preferentially being carried out to power control is the 4th class unit; the 1st class unit; the 6th class unit; the 2nd class unit; because so the 5th class unit has been shut down and is this time fallen power division and do not comprise such unit; and the 3rd next cycle of class unit be about to start, so power instruction to be allocated obtains instruction power to be reduced after will adding the power change values in next cycle.According to grouping information, power is distributed.For example, the operation that first consideration stops the 4th class unit of next control cycle shutdown Awaiting Overhaul obtains reducing power margin, if reducible power margin is more than or equal to command value, other blower fans is not controlled, if reducible power margin is less than command value, all the 1st class units of poll, and calculate the power margin that will reduce after all unit power limitations, if the power margin sum of two groups of unit energy minimizings is more than or equal to command value, by the gradient sequence from high in the end of all performance numbers that can reduce while limitting power unit to generate electricity according to minimum power, and successively unit is limit to power, and compare with the value that needs reduce, until cumulative falling performance number and shut down the power that the performance number of falling reaches or approach required reduction, suitable unit is limit power fine setting according to the power that still needs to reduce, from remaining unit, to choose power.If the power margin sum of two groups of unit energy minimizings is less than command value; the uncontrollable unit of the 6th class can be sent out to performance number gradient sequence from high to low by next cycle; shut down successively; and compare with the value that needs reduce; until after shutdown group cumulative falling power reaches or approach the power that need fall, then at the uncontrollable unit being left, choose suitable compressor emergency shutdown according to lacked watt level.As cocycle, until accumulated value be more than or equal to the value surpassing just exit circulation enter waiting process, then detect next time and control.
The above, above embodiment is only described in detail in order to the technical scheme to the application, but the explanation of above embodiment is just understood method of the present invention and core concept thereof for helping, and should not be construed as limitation of the present invention.In the technical scope that those skilled in the art disclose in the present invention, the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. a wind energy turbine set layer active power control system, is characterized in that, comprises power setting device and power distribution unit, wherein,
Described power setting device, for according to wind energy turbine set monitoring and data acquisition (SCADA) system acquisition to the unit operation information of wind turbine generator and the ultra-short term predicted power information that obtains from wind power prediction system by computer-assisted classification; Receive the power instruction that higher level's dispatching patcher issues, obtain the power to be allocated of setting command and a control cycle, whether judgement wind field need to rise from power and still fall and exert oneself, according to the tupe of judgement, will exert oneself and refer to send to corresponding described power distribution unit;
Described power distribution unit, for according to the power distribution strategies of current computer-assisted classification information and setting, is issued to blower fan control system by control command, by described blower fan control system, controls all kinds of units.
2. the system as claimed in claim 1, it is characterized in that, described power setting device, for according to wind energy turbine set monitoring and data acquisition (SCADA) system acquisition to the unit operation information of wind turbine generator and the ultra-short term predicted power information obtaining from wind power prediction system computer-assisted classification is specifically comprised: for unit being divided into six classes: the 1st class is normal limit Power operation unit; The 2nd class is for normally can not limit Power operation unit to carry out only the unit of downrating by halt mode; The 3rd class comprises unit that fault has been recovered and the unit of idle running for next control cycle unit to be started; The 4th class waits to shut down the unit of maintenance for next control cycle; The unit of the 5th class for having shut down; The 6th class is uncontrollable unit, because communication failure cannot be accepted the unit that control system is controlled.
3. system as claimed in claim 1 or 2, is characterized in that, described power setting device is also controlled allocation algorithm for establish active power based on computer-assisted classification result, and described active power is controlled allocation algorithm and comprised power per liter algorithm and fall power algorithm.
4. system as claimed in claim 3, is characterized in that,
Described power setting device, also for judging that given power target value when large, judges that in wind energy turbine set, aggregate capacity needs rising than the real value of sending out of whole audience power;
Described power distribution unit, also for carrying out power division according to the judged result of described power setting device and above grouping to all kinds of blower fans;
Wherein, described power distribution unit, also specifically comprises for all kinds of blower fans being carried out to power division according to the judged result of described power setting device and above grouping:
Due to the 4th class unit at next control cycle all in stopped status, described power distribution unit is not for carrying out power division to described the 4th class unit;
The 6th class unit is uncontrollable, cannot assign power instruction, power instruction to be allocated removes the power change values in described the 6th next cycle of class unit, because communication failure appears in the 6th class unit, described wind energy turbine set monitoring cannot collect related power information with data acquisition (SCADA) system, therefore described wind power prediction system is carried out predicted power according to the wind speed of next period forecasting with reference to wind speed wattmeter, can obtain thus and expect the gross power promoting this week, described power distribution unit is for giving the 1st by gained power division to be allocated, 2, 3 class units, concrete distribution method is as follows: described power distribution unit, for first calculating the power per liter nargin of the 1st class unit, if the power per liter nargin of the 1st class unit is more than or equal to power to be allocated, without regulating other units, the 1st class unit can be increased to watt level after limit power and sorts from high to low by cancelling, and cancel successively and limit power, and compare with the value that needs raise until after cumulative cancellation limit power increment reach or approach the power of required lifting, according to lacked power, from remaining unit, choose the unit that power is suitable and cancel limit power, if the power per liter nargin of the 1st class unit is less than power to be allocated, calculate the power margin that all the 3rd classes can promote after starting unit starting, if what add the 1st class unit can be more than or equal to power to be allocated after bring to power nargin, first cancel the limit power of all the 1st class units, then by the 3rd class unit by measure size sort from high to low, start successively unit, until increment reaches or approaches the power still lacking after limit power except cancelling after startup unit, according to lacked watt level, choose suitable unit starting, if what add the 1st class unit can be less than power to be allocated after bring to power nargin, determine that starting the 5th class has shut down unit, now need to start to start successively in order from prominent unit, and judge whether to meet power per liter requirement, if still can not meet, exit circulation, enter waiting process, then enter and detect next time and control.
5. system as claimed in claim 3, is characterized in that,
Described power setting device, also for judging that given power target value is less than real value of whole audience power, needs to reduce exerting oneself of wind field;
Described power distribution unit, for all kinds of units preferentially being carried out to the order of power control, it is the 4th class unit, the 1st class unit, the 6th class unit, the 2nd class unit, so because the 5th class unit has been shut down and this time fallen power division and do not comprise such unit, and the 3rd next cycle of class unit was about to start, so power instruction to be allocated obtains instruction power to be reduced after will adding the power change values in next cycle, according to grouping information, power is distributed: described power setting device, the operation of shutting down the 4th class unit of Awaiting Overhaul for first stopping next control cycle obtains reducing power margin, if reducible power margin is more than or equal to command value, other blower fans are not controlled, if reducible power margin is less than command value, all the 1st class units of poll, and calculate the power margin that will reduce after all unit power limitations, if the power margin sum of two groups of unit energy minimizings is more than or equal to command value, by the gradient sequence from high in the end of all performance numbers that can reduce while limitting power unit to generate electricity according to minimum power, and successively unit is limit to power, and compare with the value that needs reduce, until cumulative falling performance number and shut down the power that the performance number of falling reaches or approach required reduction, suitable unit is limit power fine setting according to the power that still needs to reduce, from remaining unit, to choose power, if the power margin sum of two groups of unit energy minimizings is less than command value, the uncontrollable unit of the 6th class can be sent out to performance number gradient sequence from high to low by next cycle, shut down successively, and compare with the value that needs reduce, until after shutdown group cumulative falling power reaches or approach the power that need fall, then at the uncontrollable unit being left, choose suitable compressor emergency shutdown according to lacked watt level, as cocycle, until accumulated value be more than or equal to the value surpassing just exit circulation enter waiting process, then detect next time and control.
6. a wind energy turbine set layer active power control method, is characterized in that, described method comprises:
Wind energy turbine set layer active power control system according to wind energy turbine set monitoring and data acquisition (SCADA) system acquisition to the unit operation information of wind turbine generator and the ultra-short term predicted power information that obtains from wind power prediction system by computer-assisted classification;
Described wind energy turbine set layer active power control system receives the power instruction that higher level's dispatching patcher issues, and obtains the power to be allocated of setting command and a control cycle, and judgement wind field need to rise from power and still fall and exert oneself;
Described wind energy turbine set layer active power control system, according to the power distribution strategies of current computer-assisted classification information and setting, is issued to blower fan control system by control command, by described blower fan control system, controls all kinds of units.
7. method as claimed in claim 6, it is characterized in that, described wind energy turbine set layer active power control system according to wind energy turbine set monitoring and data acquisition (SCADA) system acquisition to the unit operation information of wind turbine generator and the ultra-short term predicted power information obtaining from wind power prediction system computer-assisted classification is specifically comprised:
Described wind energy turbine set layer active power control system is divided into six classes by unit: the 1st class is normal limit Power operation unit; The 2nd class is for normally can not limit Power operation unit to carry out only the unit of downrating by halt mode; The 3rd class comprises unit that fault has been recovered and the unit of idle running for next control cycle unit to be started; The 4th class waits to shut down the unit of maintenance for next control cycle; The unit of the 5th class for having shut down; The 6th class is uncontrollable unit, because communication failure cannot be accepted the unit that control system is controlled.
8. the method as described in claim 6 or 7, is characterized in that, described method also comprises:
Based on computer-assisted classification result, establish active power and control allocation algorithm, described active power is controlled allocation algorithm and is comprised power per liter algorithm and fall power algorithm.
9. method as claimed in claim 8, is characterized in that, described method also comprises:
Judge when given power target value is larger than real value of whole audience power, judge that in wind energy turbine set, aggregate capacity needs to raise;
According to judged result and above grouping, all kinds of blower fans are carried out to power division;
Wherein, describedly according to described judged result and above grouping, all kinds of blower fans are carried out to power division and specifically comprise:
Due to the 4th class unit at next control cycle all in stopped status, described the 4th class unit is not carried out to power division;
The 6th class unit is uncontrollable, cannot assign power instruction, power instruction to be allocated removes the power change values in described the 6th next cycle of class unit, because communication failure appears in the 6th class unit, described wind energy turbine set monitoring cannot collect related power information with data acquisition (SCADA) system, therefore described wind power prediction system is carried out predicted power according to the wind speed of next period forecasting with reference to wind speed wattmeter, can obtain thus and expect the gross power promoting this week, by gained power division to be allocated, give the 1st, 2, 3 class units, concrete distribution method is as follows: the power per liter nargin of first calculating the 1st class unit, if the power per liter nargin of the 1st class unit is more than or equal to power to be allocated, without regulating other units, the 1st class unit can be increased to watt level after limit power and sorts from high to low by cancelling, and cancel successively and limit power, and compare with the value that needs raise until after cumulative cancellation limit power increment reach or approach the power of required lifting, according to lacked power, from remaining unit, choose the unit that power is suitable and cancel limit power, if the power per liter nargin of the 1st class unit is less than power to be allocated, calculate the power margin that all the 3rd classes can promote after starting unit starting, if what add the 1st class unit can be more than or equal to power to be allocated after bring to power nargin, first cancel the limit power of all the 1st class units, then by the 3rd class unit by measure size sort from high to low, start successively unit, until increment reaches or approaches the power still lacking after limit power except cancelling after startup unit, according to lacked watt level, choose suitable unit starting, if what add the 1st class unit can be less than power to be allocated after bring to power nargin, determine that starting the 5th class has shut down unit, now need to start to start successively in order from prominent unit, and judge whether to meet power per liter requirement, if still can not meet, exit circulation, enter waiting process, then enter and detect next time and control.
10. method as claimed in claim 8, is characterized in that, describedly according to the judged result of described power setting device and above grouping, all kinds of blower fans is carried out to power division and specifically comprises:
Judge that given power target value is less than real value of whole audience power, need to reduce exerting oneself of wind field, the order of all kinds of units preferentially being carried out to power control is the 4th class unit, the 1st class unit, the 6th class unit, the 2nd class unit, so because the 5th class unit has been shut down and this time fallen power division and do not comprise such unit, and the 3rd next cycle of class unit be about to start, so power instruction to be allocated obtains instruction power to be reduced after will adding the power change values in next cycle, according to grouping information, power is distributed: the operation that first stops the 4th class unit of next control cycle shutdown Awaiting Overhaul obtains reducing power margin, if reducible power margin is more than or equal to command value, other blower fans is not controlled, if reducible power margin is less than command value, all the 1st class units of poll, and calculate the power margin that will reduce after all unit power limitations, if the power margin sum of two groups of unit energy minimizings is more than or equal to command value, by the gradient sequence from high in the end of all performance numbers that can reduce while limitting power unit to generate electricity according to minimum power, and successively unit is limit to power, and compare with the value that needs reduce, until cumulative falling performance number and shut down the power that the performance number of falling reaches or approach required reduction, suitable unit is limit power fine setting according to the power that still needs to reduce, from remaining unit, to choose power, if the power margin sum of two groups of unit energy minimizings is less than command value, the uncontrollable unit of the 6th class can be sent out to performance number gradient sequence from high to low by next cycle, shut down successively, and compare with the value that needs reduce, until after shutdown group cumulative falling power reaches or approach the power that need fall, then at the uncontrollable unit being left, choose suitable compressor emergency shutdown according to lacked watt level, as cocycle, until accumulated value be more than or equal to the value surpassing just exit circulation enter waiting process, then detect next time and control.
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