CN102290855B - Combined wind farm protection device, combined wind farm protection method and wind power generation system - Google Patents
Combined wind farm protection device, combined wind farm protection method and wind power generation system Download PDFInfo
- Publication number
- CN102290855B CN102290855B CN201110191253.8A CN201110191253A CN102290855B CN 102290855 B CN102290855 B CN 102290855B CN 201110191253 A CN201110191253 A CN 201110191253A CN 102290855 B CN102290855 B CN 102290855B
- Authority
- CN
- China
- Prior art keywords
- energy
- turbine generator
- wind turbine
- wind
- electrical equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Abstract
The invention discloses a combined wind farm protection device for a wind power generation system; the system comprises at least one wind generating set, and each wind generating set comprises a set of peripheral electric installation; the device comprises a power grid monitoring module and a combined protection module; the power grid monitoring module is used for transmitting a startup instruction to the combined protection module when detecting that a wind farm is offline, and transmitting a shutdown instruction to the combined protection module when detecting that a power grid is returned to normal; and the combined protection module is used for starting up part or all of the wind generating sets to supply electricity to the peripheral electric installations corresponding to all the wind generating sets when receiving the startup instruction, and stopping operation when receiving the shutdown instruction. The invention also discloses the wind power generation system and a combined wind farm protection method. The adoption of the embodiment of the invention can guarantee energy supply for the peripheral electric installations of the wind generating sets under the circumstance that the wind farm is offline for a long time in an extreme weather, thus enhancing the self-protecting capability of the wind generating sets under extreme operation conditions.
Description
Technical field
The present invention relates to technical field of wind power generation, particularly relate to a kind of wind energy turbine set Combined Protection device and method, wind generator system.
Background technology
Along with the development and maturation of wind generating technology, wind energy becomes new forms of energy relatively with fastest developing speed.But, be accompanied by the increase of wind turbine generator single-machine capacity and the increase day by day of Construction of Wind Power scale, promote the emphasis that the self-protection of wind turbine generator under extreme service conditions and outside particular surroundings becomes research and development.
As everyone knows, wind-resources is a kind of intermittent energy source, itself has the features such as uncontrollable, unpredictable and randomness, and the harmonic wave in its output voltage, power, peak value can cause larger impact and damage to electrical network, even causes whole electrical network paralysis.
In addition, due to the noise of wind turbine generator own and the impact on environment, generally, the selection of wind energy turbine set address is, place that climate change extreme severe in environment substantially all.In order to protect wind turbine generator normally to move, conventionally can in wind turbine generator, add the peripheral electrical equipment such as heater, cooling system, heat abstractor under these environment.In order to guarantee that these using electricity systems can normally move in the time cannot exchanging energy for from electrical network, conventionally can on unit, increase the provisional power supply units such as uninterrupted power supply (UPS:Uninterruptible Power Supply).But in the situation of the long-time off-grid of wind energy turbine set causing due to the technology barriers that exist in current intelligent grid and artificial uncontrollable reason, ups power cannot meet the power supply of these normal device completely.
Therefore,, the in the situation that long-time off-grid occurring wind energy turbine set when extreme climate, how to guarantee that energy supply and the complete machine of the peripheral electrical equipment of wind turbine generator seems safely particularly important.
Summary of the invention
In view of this; the object of the present invention is to provide a kind of wind energy turbine set Combined Protection device and method, wind generator system; the in the situation that of can there is long-time off-grid in wind energy turbine set when extreme climate; guarantee the energy supply of the peripheral electrical equipment of wind turbine generator, thereby promote the self-protection ability of unit under extreme service conditions.
The embodiment of the present invention provides a kind of wind energy turbine set Combined Protection device, and described device is for wind generator system, and described system comprises at least one wind turbine generator, and every wind turbine generator comprises the peripheral electrical equipment of a set of correspondence;
Described Combined Protection device comprises: power network monitoring module and Combined Protection module;
Described power network monitoring module, when monitoring wind energy turbine set generation off-grid, sends enabled instruction to described Combined Protection module; When monitoring power system restoration when normal, send out code to described Combined Protection module;
Described Combined Protection module, when receiving described enabled instruction, actuating section or all wind turbine generator, be peripheral electrical equipment power supplies corresponding to all wind turbine generator; While receiving described out code, quit work.
Preferably, described Combined Protection module comprises:
Control unit, when receiving described enabled instruction, according to the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator, sends control command actuating section or whole wind turbine generator; While receiving described out code, quit work;
Energy conversion unit, for receiving the alternating current of described part or all of wind turbine generator output, is converted into direct current, is stored in energy-storage units; And receive the direct current that energy-storage units is exported, and be converted into alternating current, export peripheral electrical equipment corresponding to each wind turbine generator to;
Energy-storage units, for receiving the direct current of described energy conversion unit output and storing; The direct current of stable output, after described energy conversion unit transforms, is peripheral electrical equipment power supply corresponding to each wind turbine generator.
Preferably, described control unit comprises:
Wind speed detection sub-unit, for detection of current wind speed.
Prediction of output subelement, for according to the power stage of the current single wind generator group of described current forecasting wind speed, is sent to instruction and generates subelement;
Demand analysis subelement, for the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator is carried out to statistics and analysis, and is sent to instruction generation subelement by analysis result;
Energy storage detection sub-unit, for detection of the current state that obtains described energy-storage units, is sent to instruction and generates subelement;
Instruction generates subelement, the corresponding energy requirement of peripheral electrical equipment and the current state of energy-storage units of power stage, all wind turbine generator of the current single wind generator group receiving for basis, determine the number of units of the wind turbine generator that needs startup, generate corresponding control command, be sent to air-blower control subelement;
Air-blower control subelement, the control command receiving for basis, actuating section or all wind turbine generator.
Preferably, described Combined Protection module also comprises: energy storage administrative unit;
Described energy storage administrative unit, has reached the upper of himself stored energy capacitance for the storage electric weight when described energy-storage units and has prescribed a time limit, and controls described energy-storage units and stops receiving the direct current that described energy conversion unit sends; When the storage electric weight of described energy-storage units reached himself stored energy capacitance lower in limited time, control described energy-storage units and stop to described energy conversion unit output direct current.
The embodiment of the present invention also provides a kind of wind-powered electricity generation electricity generation system, and described system comprises at least one wind turbine generator, for every wind turbine generator all arranges the peripheral electrical equipment of a set of correspondence;
Described system also comprises: power network monitoring module and Combined Protection module;
Described power network monitoring module, when monitoring wind energy turbine set generation off-grid, sends enabled instruction to described Combined Protection module; When monitoring power system restoration when normal, send out code to described Combined Protection module;
Described Combined Protection module, when receiving described enabled instruction, actuating section or all wind turbine generator, be peripheral electrical equipment power supplies corresponding to all wind turbine generator; While receiving described out code, quit work.
Preferably, described Combined Protection module comprises:
Control unit, when receiving described enabled instruction, according to the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator, sends control command actuating section or whole wind turbine generator; While receiving described out code, quit work;
Energy conversion unit, for receiving the alternating current of described part or all of wind turbine generator output, is converted into direct current, is stored in energy-storage units; And receive the direct current that energy-storage units is exported, and be converted into alternating current, export peripheral electrical equipment corresponding to each wind turbine generator to;
Energy-storage units, for receiving the direct current of described energy conversion unit output and storing; The direct current of stable output, after described energy conversion unit transforms, is peripheral electrical equipment power supply corresponding to each wind turbine generator.
Preferably, described control unit comprises:
Wind speed detection sub-unit, for detection of current wind speed.
Prediction of output subelement, for according to the power stage of the current single wind generator group of described current forecasting wind speed, is sent to instruction and generates subelement;
Demand analysis subelement, for the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator is carried out to statistics and analysis, and is sent to instruction generation subelement by analysis result;
Energy storage detection sub-unit, for detection of the current state that obtains described energy-storage units, is sent to instruction and generates subelement;
Instruction generates subelement, the corresponding energy requirement of peripheral electrical equipment and the current state of energy-storage units of power stage, all wind turbine generator of the current single wind generator group receiving for basis, determine the number of units of the wind turbine generator that needs startup, generate corresponding control command, be sent to air-blower control subelement;
Air-blower control subelement, the control command receiving for basis, actuating section or all wind turbine generator.
Preferably, described Combined Protection module also comprises: energy storage administrative unit;
Described energy storage administrative unit, has reached the upper of himself stored energy capacitance for the storage electric weight when described energy-storage units and has prescribed a time limit, and controls described energy-storage units and stops receiving the direct current that described energy conversion unit sends; When the storage electric weight of described energy-storage units reached himself stored energy capacitance lower in limited time, control described energy-storage units and stop to described energy conversion unit output direct current.
The embodiment of the present invention also provides a kind of wind energy turbine set Combined Protection method, and described method is for wind generator system, and described system comprises at least one wind turbine generator, for every wind turbine generator all arranges the peripheral electrical equipment of a set of correspondence;
Said method comprising the steps of:
When monitoring wind energy turbine set generation off-grid, actuating section or all wind turbine generator, be peripheral electrical equipment power supply corresponding to all wind turbine generator;
When monitoring power system restoration when normal, switching to electrical network, be peripheral electrical equipment power supplies corresponding to all wind turbine generator.
Preferably, described actuating section or all wind turbine generator, the peripheral electrical equipment power supply corresponding for all wind turbine generator specifically comprises:
According to the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator, actuating section or all wind turbine generator;
The alternating current that receives described part or all of wind turbine generator output, is converted into direct current, and is stored in energy-storage units;
The direct current of described energy-storage units stable output, is stable alternating current after transforming, and is peripheral electrical equipment power supply corresponding to each wind turbine generator.
Preferably, described according to the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator, actuating section or all wind turbine generator specifically comprise:
Detect current wind speed;
According to the power stage of the current single wind generator group of described current forecasting wind speed;
Energy requirement to peripheral electrical equipment corresponding to all wind turbine generator carries out statistics and analysis;
Detection obtains the current state of described energy-storage units;
According to the power stage of described current single wind generator group, the corresponding energy requirement of peripheral electrical equipment and the current state of described energy-storage units of all wind turbine generator, determine the number of units of the wind turbine generator that needs startup;
Actuating section or all wind turbine generator.
Preferably, described method also comprises:
The electric energy storing when described energy-storage units has reached himself stored energy capacitance upper in limited time, control described energy-storage units and stop receiving direct current;
When the storage electric weight of described energy-storage units reached himself stored energy capacitance lower in limited time, control described energy-storage units and stop exporting direct current
According to specific embodiment provided by the invention, the invention discloses following technique effect:
System and method described in the embodiment of the present invention, when electrical network works, is that peripheral electrical equipment corresponding to each wind turbine generator is powered by electrical network; When electrical network breaks down, for example, when extreme climate, cause in the situation of wind energy turbine set off-grid, start the Combined Protection to wind energy turbine set, by described Combined Protection module actuating section or whole wind turbine generator, be peripheral electrical equipment power supplies corresponding to all wind turbine generator; When power system restoration is normal, close described Combined Protection module, continuing is that peripheral electrical equipment corresponding to each wind turbine generator is powered by electrical network.
Thus; at wind energy turbine set generation off-grid or power system restoration when normal; can realize the switching between electrical network and Combined Protection device; guarantee that peripheral electrical equipment corresponding to wind turbine generator can remain normal operation, thereby promote the self-protection ability of wind turbine generator under extreme service conditions.
Accompanying drawing explanation
Fig. 1 is the wind generator system structure chart of the embodiment of the present invention;
Fig. 2 is control unit structure chart described in the embodiment of the present invention;
Fig. 3 is the flow chart of wind energy turbine set Combined Protection method described in the embodiment of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
In view of this; the object of the present invention is to provide a kind of wind energy turbine set Combined Protection device and method, wind generator system; the in the situation that of can there is long-time off-grid in wind energy turbine set when extreme climate; guarantee the energy supply of the peripheral electrical equipment of wind turbine generator, thereby promote the self-protection ability of unit under extreme service conditions.
With reference to Fig. 1, it is the wind generator system structure chart of the embodiment of the present invention.As shown in Figure 1, described wind generator system comprises: at least one wind turbine generator.As shown in Figure 1, described system can comprise n platform wind turbine generator: 1# unit, 2# unit ... n# unit, n is more than or equal to 1 integer.
Every wind turbine generator includes the peripheral electrical equipment (not shown in figure 1) of a set of correspondence, for the protection of the normal operation under extreme conditions of each wind turbine generator.
Each wind turbine generator is all connected with electrical network by bus, by electrical network, is that peripheral electrical equipment corresponding to each wind turbine generator is powered.
Described in the embodiment of the present invention, wind generator system also comprises: wind energy turbine set Combined Protection device, guarantees the normal operation of described wind generator system when under extreme conditions there is wind energy turbine set off-grid.
Described Combined Protection device comprises: power network monitoring module 20 and Combined Protection module 10.
Described power network monitoring module 20, when monitoring wind energy turbine set generation off-grid, sends enabled instruction to described Combined Protection module 10; When monitoring power system restoration when normal, send out code to described Combined Protection module 10.
Described Combined Protection module 10, when receiving described enabled instruction, actuating section or all wind turbine generator, be peripheral electrical equipment power supplies corresponding to all wind turbine generator; While receiving described out code, quit work.
Concrete, wind energy turbine set generation off-grid is likely that electrical network breaks down to use and causes, also may be because power grid maintenance needs people cause for power-off.
The selection of wind energy turbine set address is, place that climate change extreme severe in environment substantially all, for example the northeast of China, North China, the Northwest's wind energy resources enrich, extremely be conducive to wind power generation, but these regional regions are wide, dimension span large, temperature and humidity changes huge.Extreme climate is easy to the normal operation of wind turbine generator to impact.For example mist is many in the winter time, snow is many, air humidity situation large, that temperature is lower is descended, wind turbine generator is easy to occur so-called " rime " phenomenon, cause the blade surface crystallization of generator, sometimes can adhere to irregular sleet at blade surface even, blade surface degree of roughness is increased, or cause vane airfoil profile to change, reduce the aeroperformance of aerofoil profile, thereby reduce wind wheel power, affect the normal operation of wind turbine generator.Now, can keep the ambient temperature of blade surface by the heater in peripheral electrical equipment corresponding to wind turbine generator, avoid blade crystallization.
Once wind energy turbine set generation off-grid, peripheral electrical equipment degradedness supply corresponding to each wind turbine generator cannot work on, thereby cause under extreme weather conditions, be difficult to guarantee the normal operation of wind turbine generator.
Therefore, system described in the embodiment of the present invention, when electrical network works, is that peripheral electrical equipment corresponding to each wind turbine generator is powered by electrical network; When electrical network breaks down, for example, when extreme climate, cause in the situation of wind energy turbine set off-grid, start Combined Protection module 10, by described Combined Protection module 10 actuating sections or whole wind turbine generator, be peripheral electrical equipment power supplies corresponding to all wind turbine generator; When power system restoration is normal, close described Combined Protection module 10, continuing is that peripheral electrical equipment corresponding to each wind turbine generator is powered by electrical network.
Thus; at wind energy turbine set generation off-grid or power system restoration when normal; can realize the switching between electrical network and Combined Protection device; guarantee that peripheral electrical equipment corresponding to wind turbine generator can remain normal operation, thereby promote the self-protection ability of wind turbine generator under extreme service conditions.
As shown in Figure 1, described Combined Protection module 10 can comprise: control unit 101, energy-storage units 102, energy conversion unit 103.
Described control unit 101, when receiving described enabled instruction, according to the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator, sends control command actuating section or whole wind turbine generator; While receiving described out code, quit work.
Described energy conversion unit 103, for receiving the alternating current of described part or all of wind turbine generator output, is converted into direct current, is stored in energy-storage units 102; And receive the direct current that energy-storage units 102 is exported, and be converted into alternating current, export peripheral electrical equipment corresponding to each wind turbine generator to.
Described energy-storage units 102, for receiving the direct current of described energy conversion unit 103 outputs and storing; According to the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator, the reliable direct current of stable output is to described energy conversion unit 103, described reliable and stable direct current is converted into reliable and stable alternating current through described energy conversion unit 103, for peripheral electrical equipment power supply corresponding to each wind turbine generator, guarantee the normal operation of the peripheral electrical equipment that all wind turbine generator are corresponding.
As shown in Figure 1, in the embodiment of the present invention, described energy-storage units 102 can export electric energy peripheral electrical equipment corresponding to each wind turbine generator to by bus.
Concrete, described control unit 101 can pass through the detection to current wind speed, predict the power stage of current single unit, and the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator is added up, analyzed, detect the current state of energy-storage units 102 simultaneously, determine the number of units of the wind turbine generator that needs startup, send control command actuating section or whole wind turbine generator.
With reference to Fig. 2, it is control unit structure chart described in the embodiment of the present invention.As shown in Figure 2, described control unit 101 can comprise: wind speed detection sub-unit 1011, prediction of output subelement 1012, demand analysis subelement 1013, energy storage detection sub-unit 1014, instruction generate subelement 1015 and air-blower control subelement 1016.
Wind speed detection sub-unit 1011, for detection of current wind speed.
Prediction of output subelement 1012, for detect the power stage of the current single wind generator group of current forecasting wind speed obtaining according to described wind speed detection sub-unit 1011, is sent to instruction and generates subelement 1015.
The operation principle of wind turbine generator is: using wind-force as power, driving generator is electric energy by wind energy transformation.Thereby the power stage of wind turbine generator is directly subject to the impact of the wind speed of current external environment.When current wind speed is high, the power stage of wind turbine generator is also corresponding higher; When current wind speed is low, the power stage of wind turbine generator is also corresponding lower.
Therefore the current wind speed, obtaining according to detection can be predicted the power stage that obtains current single wind generator group.
Energy storage detection sub-unit 1014, for detection of the current state that obtains energy-storage units 102, is sent to instruction and generates subelement 1015.
Instruction generates subelement 1015, the corresponding energy requirement of peripheral electrical equipment and the current state of energy-storage units 102 of power stage, all wind turbine generator of the current single wind generator group receiving for basis, determine the number of units of the wind turbine generator that needs startup, generate corresponding control command, be sent to air-blower control subelement 1016.
It should be noted that, in the situation that wind speed is higher, energy-storage units 102 energy are sufficient, because the power stage of single wind generator group is all relatively high, now, may only need actuating section wind turbine generator just can meet the energy requirement of peripheral electrical equipment, for avoiding the safe operation of energy waste and guarantee wind turbine generator, can an actuating section wind turbine generator be the power supply of peripheral electrical equipment; If current wind speed is lower, may need to start whole wind turbine generator; If current wind speed is too low and energy-storage units 102 energy shortages, even if start the energy requirement that whole wind turbine generator can not meet all peripheral electrical equipment, can select is only important peripheral electrical equipment power supply, for example, at severe cold weather, is preferably heater power supply.
Now, need described instruction to generate subelement 1015, current state in conjunction with the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator that receive, the power stage of current single wind generator group and energy-storage units 102, current energy requirement and energy supply are made overall planning, determine the number of units of the wind turbine generator that needs startup, and generate corresponding control command, be sent to air-blower control subelement 1016.
Air-blower control subelement 1016, the control command receiving for basis, actuating section or all wind turbine generator.
In the embodiment of the present invention, by described Combined Protection device is set for wind energy turbine set, when monitoring electrical network, break down, for example, when extreme climate, cause in the situation of wind energy turbine set off-grid, start Combined Protection module 10, by described Combined Protection module 10 actuating sections or whole wind turbine generator, for peripheral electrical equipment power supply corresponding to all wind turbine generator, can realize in the situation that long-time off-grid occurs wind energy turbine set thus, guarantee the energy supply of the peripheral electrical equipment of wind turbine generator, thereby promote the self-protection ability of unit under extreme service conditions.
Preferably, Combined Protection module 10 can also comprise described in the embodiment of the present invention: energy storage administrative unit 104, and for the energy adjustmenting management of described energy-storage units 102.Concrete, described energy storage administrative unit 104 can be controlled according to the stored energy capacitance of described energy-storage units 102 self charge volume and the discharge capacity of described energy-storage units 102; When the storage electric weight of described energy-storage units 102 reached himself stored energy capacitance upper in limited time, control described energy-storage units 102 and stop receiving the direct current that described energy conversion unit 103 sends; When the storage electric weight of described energy-storage units 102 reached himself stored energy capacitance lower in limited time, control described energy-storage units 102 and stop, to described energy conversion unit 103 output direct currents, being and stopping as the power supply of peripheral electrical equipment.
By described energy storage administrative unit 104, can avoid described energy-storage units 102 to occur overcharging or cross putting phenomenon, effectively guaranteed described energy-storage units 102 operating state in safety all the time.
But, it should be noted that, in the extreme weather situation of wind-force state difference (being wind speed very low), the charge volume that occurs possibly described energy-storage units 102 is less than discharge capacity, cause it to store the lower limit that electric weight closes on himself stored energy capacitance, now, can select only for important peripheral electrical equipment is powered, for example, at severe cold weather, be preferably heater power supply.In necessary situation, the performance that can sacrifice described energy-storage units 102 meets power demands, for example, and under the weather of severe cold particularly, even if the charge volume of energy-storage units 102, lower than the lower limit of himself stored energy capacitance, also will guarantee the normal operation of the heater of each wind turbine generator.
The wind energy turbine set Combined Protection device providing corresponding to the embodiment of the present invention, the embodiment of the present invention also provides a kind of wind energy turbine set Combined Protection method.Described method guarantees the normal operation of described wind generator system while being used under extreme conditions wind energy turbine set off-grid occurring.
For every wind turbine generator all arranges the peripheral electrical equipment of a set of correspondence, for the protection of the normal operation under extreme conditions of each wind turbine generator.
Each wind turbine generator is all connected with electrical network by bus, by electrical network, is that peripheral electrical equipment corresponding to each wind turbine generator is powered.
With reference to Fig. 3, it is the flow chart of wind energy turbine set Combined Protection method described in the embodiment of the present invention.As shown in Figure 3, described method can comprise the following steps:
Step S301: when monitoring wind energy turbine set generation off-grid, actuating section or all wind turbine generator, be peripheral electrical equipment power supply corresponding to all wind turbine generator.
Step S302: be peripheral electrical equipment power supplies corresponding to all wind turbine generator when monitoring power system restoration when normal, switching to electrical network.
Therefore, method described in the embodiment of the present invention, when electrical network works, is that peripheral electrical equipment corresponding to each wind turbine generator is powered by electrical network; When electrical network breaks down, for example, when extreme climate, cause in the situation of wind energy turbine set off-grid, start the Combined Protection to wind energy turbine set, by actuating section or whole wind turbine generator, be peripheral electrical equipment power supplies corresponding to all wind turbine generator; When power system restoration is normal, stop described Combined Protection, switching to by electrical network is that peripheral electrical equipment corresponding to each wind turbine generator is powered.
Thus; at wind energy turbine set generation off-grid or power system restoration when normal; can realize the switching between electrical network and Combined Protection device; guarantee that peripheral electrical equipment corresponding to wind turbine generator can remain normal operation, thereby promote the self-protection ability of wind turbine generator under extreme service conditions.
Concrete, in step S301, when monitoring wind energy turbine set generation off-grid, actuating section or all wind turbine generator, be peripheral electrical equipment power supply corresponding to all wind turbine generator, specifically can realize by following steps:
Step S3011: according to the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator, actuating section or all wind turbine generator.
It should be noted that, in step S3011, can pass through the detection to current wind speed, predict the power stage of current single unit, and the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator is added up, analyzed, detect the current state of energy-storage units simultaneously, determine the number of units of the wind turbine generator that needs startup, send control command actuating section or whole wind turbine generator.
Concrete, described step S3011 can realize by following step:
Step S3011-1: detect current wind speed.
Step S3011-2: according to the power stage of the current single wind generator group of described current forecasting wind speed.
Step S3011-3: the energy requirement to peripheral electrical equipment corresponding to all wind turbine generator carries out statistics and analysis.
Step S3011-4: detect the current state that obtains described energy-storage units.
Step S3011-5: according to the power stage of described current single wind generator group, the corresponding energy requirement of peripheral electrical equipment and the current state of described energy-storage units of all wind turbine generator, determine the number of units of the wind turbine generator that needs startup.
It should be noted that, in the situation that wind speed is higher, energy-storage units energy is sufficient, because the power stage of single wind generator group is all relatively high, now, may only need actuating section wind turbine generator just can meet the energy requirement of peripheral electrical equipment, for avoiding the safe operation of energy waste and guarantee wind turbine generator, can an actuating section wind turbine generator be the power supply of peripheral electrical equipment; If current wind speed is lower, may need to start whole wind turbine generator; If current wind speed is too low and energy-storage units energy shortage, even if start the energy requirement that whole wind turbine generator can not meet all peripheral electrical equipment, can select is only important peripheral electrical equipment power supply, for example, at severe cold weather, is preferably heater power supply.
Now, need to be in conjunction with energy requirement, the power stage of current single wind generator group and the current state of energy-storage units of peripheral electrical equipment corresponding to all wind turbine generator, current energy requirement and energy supply are made overall planning, determine the number of units of the wind turbine generator that needs startup.
Step S3011-6: according to the described number of units that needs the wind turbine generator of startup, actuating section or all wind turbine generator.
Step S3012: receive the alternating current of described part or all of wind turbine generator output, be converted into direct current, and be stored in energy-storage units.
Step S3013: according to the energy requirement of peripheral electrical equipment corresponding to wind turbine generator, the reliable direct current of stable output from described energy-storage units, after transforming, it is stable alternating current, for peripheral electrical equipment power supply corresponding to each wind turbine generator, guarantee the normal operation of the peripheral electrical equipment that wind turbine generator is corresponding.
Preferably, described in the embodiment of the present invention, method can further include: the energy of described energy-storage units is carried out to adjustmenting management, according to the stored energy capacitance of described energy-storage units self, control its charge volume and discharge capacity.
Concrete, when the storage electric weight of described energy-storage units reached himself stored energy capacitance upper in limited time, control described energy-storage units and stop receiving direct current; When the storage electric weight of described energy-storage units has reached the lower of himself stored energy capacitance, control described energy-storage units and stop exporting direct current in limited time, be and stop electric equipment power supply to the periphery.
By above-mentioned steps, can avoid described energy-storage units to occur overcharging or cross putting phenomenon, effectively guaranteed the described energy-storage units operating state in safety all the time.
But, it should be noted that, in the extreme weather situation of wind-force state difference (being wind speed very low), the charge volume that occurs possibly described energy-storage units is less than discharge capacity, cause it to store the lower limit that electric weight closes on himself stored energy capacitance, now, can select only for important peripheral electrical equipment is powered, for example, at severe cold weather, be preferably heater power supply.In necessary situation, the performance that can sacrifice described energy-storage units meets power demands, for example, and under the weather of severe cold particularly, even if the charge volume of energy-storage units, lower than the lower limit of himself stored energy capacitance, also will guarantee the normal operation of the heater of each wind turbine generator.
Above to a kind of wind energy turbine set Combined Protection device and method provided by the present invention, wind generator system, be described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications.In sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. a wind energy turbine set Combined Protection device, is characterized in that, described device is for wind generator system, and described system comprises at least one wind turbine generator, and every wind turbine generator comprises the peripheral electrical equipment of a set of correspondence;
Described Combined Protection device comprises: power network monitoring module and Combined Protection module;
Described power network monitoring module, when monitoring wind energy turbine set generation off-grid, sends enabled instruction to described Combined Protection module; When monitoring power system restoration when normal, send out code to described Combined Protection module;
Described Combined Protection module, while being used for receiving described enabled instruction, actuating section or all wind turbine generator, for peripheral electrical equipment power supply corresponding to all wind turbine generator, wherein, described in current separate unit, the power stage of wind turbine generator is that the current wind speed that obtains according to detection is predicted and obtained; While receiving described out code, quit work;
Wherein, described Combined Protection module comprises:
Control unit, when receiving described enabled instruction, according to the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator, sends control command actuating section or whole wind turbine generator; While receiving described out code, quit work;
Energy conversion unit, for receiving the alternating current of described part or all of wind turbine generator output, is converted into direct current, is stored in energy-storage units; And receive the direct current that energy-storage units is exported, and be converted into alternating current, export peripheral electrical equipment corresponding to each wind turbine generator to;
Energy-storage units, for receiving the direct current of described energy conversion unit output and storing; The direct current of stable output, after described energy conversion unit transforms, is peripheral electrical equipment power supply corresponding to each wind turbine generator;
Wherein, described control unit comprises:
Wind speed detection sub-unit, for detection of current wind speed;
Prediction of output subelement, for according to the power stage of the current single wind generator group of described current forecasting wind speed, is sent to instruction and generates subelement;
Demand analysis subelement, for the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator is carried out to statistics and analysis, and is sent to instruction generation subelement by analysis result;
Energy storage detection sub-unit, for detection of the current state that obtains described energy-storage units, is sent to instruction and generates subelement;
Instruction generates subelement, the corresponding energy requirement of peripheral electrical equipment and the current state of energy-storage units of power stage, all wind turbine generator of the current single wind generator group receiving for basis, determine the number of units of the wind turbine generator that needs startup, generate corresponding control command, be sent to air-blower control subelement;
Air-blower control subelement, the control command receiving for basis, actuating section or all wind turbine generator.
2. wind energy turbine set Combined Protection device according to claim 1, is characterized in that, described Combined Protection module also comprises: energy storage administrative unit;
Described energy storage administrative unit, has reached the upper of himself stored energy capacitance for the storage electric weight when described energy-storage units and has prescribed a time limit, and controls described energy-storage units and stops receiving the direct current that described energy conversion unit sends; When the storage electric weight of described energy-storage units reached himself stored energy capacitance lower in limited time, control described energy-storage units and stop to described energy conversion unit output direct current.
3. a wind-powered electricity generation electricity generation system, is characterized in that, described system comprises at least one wind turbine generator, for every wind turbine generator all arranges the peripheral electrical equipment of a set of correspondence;
Described system also comprises: power network monitoring module and Combined Protection module;
Described power network monitoring module, when monitoring wind energy turbine set generation off-grid, sends enabled instruction to described Combined Protection module; When monitoring power system restoration when normal, send out code to described Combined Protection module;
Described Combined Protection module, while being used for receiving described enabled instruction, actuating section or all wind turbine generator, for peripheral electrical equipment power supply corresponding to all wind turbine generator, wherein, described in current separate unit, the power stage of wind turbine generator is that the current wind speed that obtains according to detection is predicted and obtained; While receiving described out code, quit work;
Wherein, described Combined Protection module comprises:
Control unit, when receiving described enabled instruction, according to the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator, sends control command actuating section or whole wind turbine generator; While receiving described out code, quit work;
Energy conversion unit, for receiving the alternating current of described part or all of wind turbine generator output, is converted into direct current, is stored in energy-storage units; And receive the direct current that energy-storage units is exported, and be converted into alternating current, export peripheral electrical equipment corresponding to each wind turbine generator to;
Energy-storage units, for receiving the direct current of described energy conversion unit output and storing; The direct current of stable output, after described energy conversion unit transforms, is peripheral electrical equipment power supply corresponding to each wind turbine generator;
Wherein, described control unit comprises:
Wind speed detection sub-unit, for detection of current wind speed;
Prediction of output subelement, for according to the power stage of the current single wind generator group of described current forecasting wind speed, is sent to instruction and generates subelement;
Demand analysis subelement, for the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator is carried out to statistics and analysis, and is sent to instruction generation subelement by analysis result;
Energy storage detection sub-unit, for detection of the current state that obtains described energy-storage units, is sent to instruction and generates subelement;
Instruction generates subelement, the corresponding energy requirement of peripheral electrical equipment and the current state of energy-storage units of power stage, all wind turbine generator of the current single wind generator group receiving for basis, determine the number of units of the wind turbine generator that needs startup, generate corresponding control command, be sent to air-blower control subelement;
Air-blower control subelement, the control command receiving for basis, actuating section or all wind turbine generator.
4. wind generator system according to claim 3, is characterized in that, described Combined Protection module also comprises: energy storage administrative unit;
Described energy storage administrative unit, has reached the upper of himself stored energy capacitance for the storage electric weight when described energy-storage units and has prescribed a time limit, and controls described energy-storage units and stops receiving the direct current that described energy conversion unit sends; When the storage electric weight of described energy-storage units reached himself stored energy capacitance lower in limited time, control described energy-storage units and stop to described energy conversion unit output direct current.
5. a wind energy turbine set Combined Protection method, is characterized in that, described method is for wind generator system, and described system comprises at least one wind turbine generator, for every wind turbine generator all arranges the peripheral electrical equipment of a set of correspondence;
Said method comprising the steps of:
When monitoring wind energy turbine set generation off-grid, actuating section or all wind turbine generator, for the power supply of peripheral electrical equipment corresponding to all wind turbine generator, wherein, the power stage of wind turbine generator is that the current wind speed that obtains according to detection is predicted and obtained described in current separate unit;
When monitoring power system restoration when normal, switching to electrical network, be peripheral electrical equipment power supplies corresponding to all wind turbine generator;
Wherein, described actuating section or all wind turbine generator, the peripheral electrical equipment power supply corresponding for all wind turbine generator specifically comprises:
According to the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator, actuating section or all wind turbine generator;
The alternating current that receives described part or all of wind turbine generator output, is converted into direct current, and is stored in energy-storage units;
The direct current of described energy-storage units stable output, is stable alternating current after transforming, and is peripheral electrical equipment power supply corresponding to each wind turbine generator;
Wherein, described according to the energy requirement of peripheral electrical equipment corresponding to all wind turbine generator, actuating section or all wind turbine generator specifically comprise:
Detect current wind speed;
According to the power stage of the current single wind generator group of described current forecasting wind speed;
Energy requirement to peripheral electrical equipment corresponding to all wind turbine generator carries out statistics and analysis;
Detection obtains the current state of described energy-storage units;
According to the power stage of described current single wind generator group, the corresponding energy requirement of peripheral electrical equipment and the current state of described energy-storage units of all wind turbine generator, determine the number of units of the wind turbine generator that needs startup;
Actuating section or all wind turbine generator.
6. method according to claim 5, is characterized in that, described method also comprises:
The electric energy storing when described energy-storage units has reached himself stored energy capacitance upper in limited time, control described energy-storage units and stop receiving direct current;
When the storage electric weight of described energy-storage units reached himself stored energy capacitance lower in limited time, control described energy-storage units and stop exporting direct current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110191253.8A CN102290855B (en) | 2011-07-08 | 2011-07-08 | Combined wind farm protection device, combined wind farm protection method and wind power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110191253.8A CN102290855B (en) | 2011-07-08 | 2011-07-08 | Combined wind farm protection device, combined wind farm protection method and wind power generation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102290855A CN102290855A (en) | 2011-12-21 |
| CN102290855B true CN102290855B (en) | 2014-01-15 |
Family
ID=45337036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110191253.8A Expired - Fee Related CN102290855B (en) | 2011-07-08 | 2011-07-08 | Combined wind farm protection device, combined wind farm protection method and wind power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102290855B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632542A (en) * | 2014-11-14 | 2015-05-20 | 无锡信大气象传感网科技有限公司 | Wind power generation method |
| CN106523278A (en) * | 2015-09-14 | 2017-03-22 | 天津捷金金属制品有限公司 | PID control system based on humidity information and used for wind driven generator |
| CN106523277A (en) * | 2015-09-14 | 2017-03-22 | 天津捷金金属制品有限公司 | Wind driven generator PID control system based on temperature information |
| CN107453390B (en) * | 2016-06-01 | 2019-11-15 | 北京睿能世纪科技有限公司 | A kind of electricity generation system and electricity-generating method for power grid power supply |
| CN107800190B (en) * | 2017-10-23 | 2020-06-30 | 新疆金风科技股份有限公司 | Wind generating set standby power system and control method thereof |
| CN116014706A (en) * | 2020-03-05 | 2023-04-25 | 超聚变数字技术有限公司 | Power supply method, system, power supply device and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299540A (en) * | 2007-04-30 | 2008-11-05 | 国网南京自动化研究院 | Apparatus for implementing low voltage cross-over of wind generator set |
| CN102104263A (en) * | 2009-12-17 | 2011-06-22 | 台达电子工业股份有限公司 | High voltage direct current uninterruptible power supply system with multiple input power sources |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2235367B1 (en) * | 2007-12-21 | 2016-03-16 | 2-B Energy Holding B.V. | Wind turbine park |
| US7952232B2 (en) * | 2008-03-13 | 2011-05-31 | General Electric Company | Wind turbine energy storage and frequency control |
-
2011
- 2011-07-08 CN CN201110191253.8A patent/CN102290855B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299540A (en) * | 2007-04-30 | 2008-11-05 | 国网南京自动化研究院 | Apparatus for implementing low voltage cross-over of wind generator set |
| CN102104263A (en) * | 2009-12-17 | 2011-06-22 | 台达电子工业股份有限公司 | High voltage direct current uninterruptible power supply system with multiple input power sources |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102290855A (en) | 2011-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102290855B (en) | Combined wind farm protection device, combined wind farm protection method and wind power generation system | |
| Tan et al. | Coordinated control strategy of a battery energy storage system to support a wind power plant providing multi-timescale frequency ancillary services | |
| KR100694485B1 (en) | Hybrid generation system using solar light and wind power | |
| US9870593B2 (en) | System, method and controller for managing and controlling a micro-grid | |
| KR101478791B1 (en) | Method and System for Power Management | |
| JP2012039821A (en) | Power fluctuation relaxing device of power generating system and power fluctuation relaxing method | |
| Misak et al. | Off-grid power systems | |
| CN102208815A (en) | Household multi-energy system and control method thereof | |
| CN104052159A (en) | Energy management controller used for wind and light storage micro-grid system | |
| CN104184171A (en) | Wind power plant layer active power control system and method | |
| CN104410089A (en) | Electric vehicle based real-time scheduling method for power balance of wind power generation microgrid | |
| CN104463697A (en) | Risk assessment method for power system including large-scale wind power | |
| CN103488864A (en) | Evaluation method for risk of wind power, photovoltaic power generation and energy storage combined power generation system | |
| JP2016116401A (en) | Power load leveling device | |
| CN202435115U (en) | Standby power supply system of wind generating set | |
| CN105305428A (en) | Method and system for improving reliability of wind prediction system by use of double-redundancy mode | |
| KR20140111118A (en) | Solar-cell system having maximum power saving function and method thereof | |
| Nguyen et al. | Determination of the optimal battery capacity based on a life time cost function in wind farm | |
| CN109989882B (en) | Standby control method and device of wind generating set | |
| CN103956827A (en) | Harmonic monitoring control system based on multi-source microgrid | |
| CN103762936A (en) | Photovoltaic wind energy engine, air compression system and electrical power generating system | |
| CN203233179U (en) | Wind power prediction system | |
| CN203722565U (en) | Photovoltaic wind turbine, air compression system and a power generation system | |
| Xu et al. | Optimal configuration of battery energy storage system for peak-load regulation | |
| CN102738816A (en) | Bus load predicting method under photovoltaic distributed power source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20140708 |
|
| EXPY | Termination of patent right or utility model |