CN104377911A - Humidity removing method, device and system of wind driven generator - Google Patents
Humidity removing method, device and system of wind driven generator Download PDFInfo
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- CN104377911A CN104377911A CN201410659032.2A CN201410659032A CN104377911A CN 104377911 A CN104377911 A CN 104377911A CN 201410659032 A CN201410659032 A CN 201410659032A CN 104377911 A CN104377911 A CN 104377911A
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention provides a humidity removing method, device and system of a wind driven generator. The method includes the steps that the direct current is applied on a winding in a three-phase winding unit of the wind driven generator, the winding temperature is obtained, and the current control is conducted on the direct current according to the winding temperature; the current control includes the steps that if the winding temperature is larger than the first preset temperature and smaller than the second preset temperature, the direct current is adjusted according to the obtained winding temperature, the direct current is made to increase gradually, the more the winding temperature gets close to the second preset temperature, the smaller the direct current increasing amplitude is, and if the winding temperature is equal to the second preset temperature, the direct current is kept unchanged. According to the humidity removing method and device of the wind driven generator, the direct current is applied on the winding of the wind driven generator to conduct heating and humidity removing, the changing magnitude of the direct current is adjusted according to the approaching degree between the winding temperature and the preset temperature, and thus safe and reliable humidity removing is achieved.
Description
Technical field
The present invention relates to wind power generation field, particularly relate to a kind of dehumidifying method of wind-driven generator, Apparatus and system.
Background technology
Modern large-scale wind driven generator is in transport, storage and field-mounted process, run into plum rain season, air humidity is large, or after installing at the scene because of some reason down time long time, all easily there is stators and rotators winding surface wetting, cause insulating properties to reduce.If now rashly put into operation, insulating motor coil just may be caused to puncture, cause the accident.At present, mainly take the methods such as external heat source heating, stator iron loss seasoning, short circuit current seasoning and A.C. welder seasoning for wind-driven generator dehumidifying, but, due to the limitation of said method in application scenario, applicability and fail safe etc., be not suitable for modern large-scale wind driven generator.
Such as, external heat source heating needs first to be disassembled by motor, and put into motor cavity with powerful incandescent lamp bulb and toast it, or motor being put into drying room carries out drying, the method is only applicable to easily-disassembled micro-machine.Iron loss seasoning also needs the rotor of motor and stator to disassemble, on stator around on magnet exciting coil, pass into low-voltage AC and produce magnetic flux, utilize the stator iron loss of induction to make heating unshakable in one's determination, thus dry coil, the method is also only only applicable to easily-disassembled motor.And short circuit current seasoning can be used for the in-situ processing of generator usually, short dot is located at stator outlet, stator need run under stable low speed, and there is adjustable exciting current, by regulating exciting current to control baking temperature time dry, but for large-scale direct-drive permanent-magnet synchronous generator, the excitation of rotor is provided by permanent magnet, do not have regulating power, therefore, there is modulability difference and there is the defect of certain risk in the method when this type is applied.In addition, A.C. welder seasoning can not be disassembled by electric machine rotor, only need pass into alternating current to motor winding, utilize winding resistance to generate heat and carry out drying, but because the electric current be added in when A.C. welder works on electric welder transformer is comparatively large, can not uses for a long time, otherwise may electric welding machine be burnt out, the method is only applicable to low-power machine, and can not use for a long time.
Summary of the invention
Embodiments of the invention provide a kind of dehumidifying method, Apparatus and system of wind-driven generator, to realize utilizing the winding of wind-driven generator self to carry out safe and reliable dehumidifying.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A dehumidifying method for wind-driven generator, comprising:
The winding of direction wind-driven generator applies direct current, and obtains winding temperature, and carry out Current Control according to described winding temperature to described direct current, described Current Control comprises:
If described winding temperature is greater than described first preset temperature and is less than the second preset temperature, then adjust described direct current according to the described winding temperature got, described direct current is progressively increased, described winding temperature is more close to described second preset temperature, the amplitude that described direct current increases is less, if described winding temperature equals described second preset temperature, then keep described direct current constant.
A damp-eliminating apparatus for wind-driven generator, comprises DC power supply, winding temperature acquisition module and current control module,
The winding that described DC power supply is used for direction wind-driven generator applies direct current;
Described winding temperature acquisition module is for obtaining winding temperature;
Described current control module is used for carrying out Current Control according to described winding temperature to described direct current,
Described current control module comprises the first current control unit: for being greater than described first preset temperature at described winding temperature and being less than the second preset temperature, described winding temperature according to getting adjusts described direct current, described direct current is progressively increased, described winding temperature is more close to described second preset temperature, the amplitude that described direct current increases is less, if described winding temperature equals described second preset temperature, then keep described direct current constant.
A dehumidifying system for wind-driven generator, comprises the stator of above-mentioned damp-eliminating apparatus and wind-driven generator or a three-phase windings unit of rotor or multiple three-phase windings unit.
In the dehumidifying method of wind-driven generator of the present invention, device and system, apply direct current by the winding of direction wind-driven generator and carry out heating dehumidifying, and the amplitude of variation of direct current is adjusted according to the degree of closeness between winding temperature and default temperature, thus realize safe and reliable dehumidifying, and owing to utilizing the winding of self to carry out heating dehumidifying, therefore, not by the restriction of site conditions, on-the-spot directly application can be used at wind-driven generator, need not motor be disassembled.
Accompanying drawing explanation
Fig. 1 is the structural representation of the damp-eliminating apparatus of the embodiment of the present invention three;
Fig. 2 is one of structural representation of the dehumidifying system of the embodiment of the present invention four;
Fig. 3 is the structural representation two of the dehumidifying system of the embodiment of the present invention four;
Fig. 4 is the structural representation three of the dehumidifying system of the embodiment of the present invention four;
Fig. 5 is the structural representation four of the dehumidifying system of the embodiment of the present invention four;
Fig. 6 is the structural representation five of the dehumidifying system of the embodiment of the present invention four;
Fig. 7 is the structural representation six of the dehumidifying system of the embodiment of the present invention four.
Drawing reference numeral explanation
11-DC power supply; 12-winding temperature acquisition module; 13-current control module; 131-first current control unit; 132-second current control unit; 133-the 3rd current control unit; 134-the 4th current control unit; 14-three-phase windings unit; 141-winding access on-off controller; K1-alternating-current switch; K2-winding access switch; K3-winding access switch; R-adjustable resistance; 1,2,3,4,5 is terminal label.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
Embodiment one
The dehumidifying method of the embodiment of the present invention applies direct current by the winding in the three-phase windings unit of direction wind-driven generator, and obtains winding temperature, carries out Current Control, realize the dehumidifying to wind-driven generator according to winding temperature to direct current.
Current Control main policies can comprise: if winding temperature is greater than the first preset temperature and be less than the second preset temperature, then according to get winding temperature adjustment flow electric current, direct current is progressively increased, winding temperature is more close to the second preset temperature, the amplitude that direct current increases is less, if winding temperature equals the second preset temperature, then keep direct current constant.Wherein, the second preset temperature is the target heating temperature of winding, namely wishes progressively to increase electric current by FEEDBACK CONTROL and winding temperature is stabilized on target heating temperature the most at last, thus carries out dehumidifying with the winding temperature of constant to wind-driven generator.First preset temperature is the starting point performing above-mentioned control strategy, can be zero also can for being less than arbitrary value of the second preset temperature, this first preset temperature can rule of thumb or test set.
In above-mentioned control strategy, increase electric current can reduce the damage to winding step by step, and the trend that electric current increases reduces along with the degree close to the second preset temperature, like this, more accurately winding temperature can be controlled on target heating temperature, thus dehumidifying safely and steadly can be realized.
Further, when winding temperature is less than the first preset temperature, the winding of direction wind-driven generator can be adopted to apply fixing direct current to carry out winding heating, the direct current of change also can be adopted to heat winding.Owing to being just started to heat motor winding, for avoiding the impact injury to winding insulation, not easily too fast heating, namely not easily super-high-current is adopted, and it is too fast not easily to make heating-up temperature increase, therefore, preferably, above-mentioned Current Control can also comprise: direct current is risen to according to predetermined climbing speed the initial DC electric current being less than winding rated current from zero, and keeps this initial DC electric current.Wherein, initial DC electric current can be less than or equal to winding rated current 30%.
Further, winding temperature is exceeded to the situation of the second preset temperature, need the measure of taking to lower direct current, enable winding temperature return on the second preset temperature, therefore, Current Control can also comprise: if winding temperature is greater than the second preset temperature and be less than the 3rd preset temperature, then according to the winding temperature adjustment direct current got, direct current is progressively reduced, and winding temperature is more close to the second preset temperature, and the amplitude that direct current reduces is less.
Further, winding temperature can not increase unlimitedly, when being increased to more than the 3rd above-mentioned preset temperature, need to take safety control strategy, stop heating winding, namely Current Control can also comprise: if winding temperature is more than or equal to the 3rd preset temperature, then stop applying direct current to winding.
In the present embodiment, winding temperature divided in order to four temperature range sections and adopt different control strategies to control, thus realize safe and reliable dehumidifying, and carry out heating dehumidifying owing to utilizing the winding of wind-driven generator self, therefore, not by the restriction of site conditions, on-the-spot directly application can be used at wind-driven generator, need not motor be disassembled.
Embodiment two
The present embodiment is further described in more detail to the control strategy of each temperature range in embodiment one.Wherein, the concrete mode obtaining winding temperature can be obtain winding temperature with predetermined time interval, preferably, by (not shown for the multiple first winding temperature detectors be arranged in wind-driven generator, such as, 3 the first winding temperature detectors can be set for every phase winding, like this, in each three-phase windings unit, being provided with 9 the first winding temperature detectors) mean value of temperature that records is as the winding temperature got.
Particularly, each temperature range and control strategy can be:
1) as t≤T
1time, I < I
a, wherein t is current winding temperature, T
1be the first preset temperature (such as can be 70 DEG C), I is the direct current of current applying, I
afor winding rated current, in this temperature range, preferably, I can be set as winding rated current I
aless than 30% constant current.
2) T is worked as
1< t≤T
2time, T
2be the second preset temperature (such as can be 100 DEG C), following formula can be adopted in temperature range to adjust direct current:
I
n+1=I
n× K
1formula (1)
K
1=A
1-B
1× (t-T
1)-C
1× dt ... formula (2)
Wherein, I
nrepresent the direct current of current time, I
n+1represent the direct current of the subsequent time after adjustment, K
1for electric current regulation coefficient, t is the winding temperature that current time obtains, and dt is the difference of winding temperature that the winding temperature that obtains of current time and previous moment obtain, T
1be the first preset temperature, A
1, B
1, C
1for the winding temperature rise gradient parameter preset, its value can according to the setting flexibly such as the blower fan type of reality and environmental factor, as long as can realize direct current is progressively increased and winding temperature more close to the second preset temperature, the less control objectives of amplitude that direct current increases.Such as, A
1span can be 1 to 1.5, B
1span can be 0.001 to 0.005, C
1span can be 0.01 to 0.05.At t close to T
2time, above-mentioned K
11 will be leveled off to, namely at t=T
2time, realize keeping the direct current of current applying constant.
3) T is worked as
2< t≤T
3time, T
3be the 3rd preset temperature (such as can be 130 DEG C), following formula can be adopted in temperature range to adjust direct current:
I
n+1=I
n× K
2formula (3)
K
2=A
2-B
2× (t-T
2)-C
2× dt ... formula (4)
Wherein, I
nrepresent the direct current of current time, I
n+1represent the direct current of the subsequent time after adjustment, K
2for electric current regulation coefficient, t is the winding temperature that current time obtains, and dt is the difference of winding temperature that the winding temperature that obtains of current time and previous moment obtain, T
2be the second preset temperature, A
2, B
2, C
2for the winding temperature rise gradient parameter preset, its value can according to the setting flexibly such as the blower fan type of reality and environmental factor, as long as can realize direct current is progressively reduced and winding temperature more close to the second preset temperature, the less control objectives of amplitude that direct current reduces.Such as, A
2span can the A of 0.5 times
1, B
1span can be the B of 10 times
1, C
2span can with C
1identical.At t close to T
2time, above-mentioned K
11 will be leveled off to, namely at t=T
2time, realize keeping the direct current of current applying constant.
4) as t > T
3time, need to perform power safety protection, stop applying direct current to winding.
Embodiment three
As shown in Figure 1, it is the damp-eliminating apparatus structural representation of the embodiment of the present invention three, this damp-eliminating apparatus comprises DC power supply 11, winding temperature acquisition module 12 and current control module 13, and wherein, DC power supply 11 applies direct current for the winding of direction wind-driven generator; Winding temperature acquisition module 12 is for obtaining winding temperature; Current control module 13 is for carrying out Current Control according to winding temperature to direct current, current control module 13 comprises the first current control unit 131: for being greater than the first preset temperature at winding temperature and being less than the second preset temperature, according to the winding temperature adjustment direct current got, direct current is progressively increased, winding temperature is more close to the second preset temperature, the amplitude that direct current increases is less, if winding temperature equals the second preset temperature, then keep direct current constant.
In above-mentioned damp-eliminating apparatus, the control of current control module 13 pairs of direct currents, increase electric current step by step, thus the damage that can reduce winding, and the trend that electric current increases reduces along with the degree close to the second preset temperature, more accurately winding temperature can be controlled on target heating temperature, thus dehumidifying safely and steadly can be realized.
Further, damp-eliminating apparatus can also comprise the second current control unit 132, for when winding temperature is less than or equal to the first preset temperature, make direct current rise to according to predetermined climbing speed the initial DC electric current being less than winding rated current from zero, and keep this initial DC electric current.Wherein, initial DC electric current is less than or equal to winding rated current 30%.
Further, damp-eliminating apparatus can also comprise the 3rd current control unit 133, for being greater than the second preset temperature at winding temperature and being less than the 3rd preset temperature, according to the winding temperature adjustment direct current got, direct current is progressively reduced, winding temperature is more close to the second preset temperature, and the amplitude that direct current reduces is less.
Further, damp-eliminating apparatus also comprises the 4th current control unit 134, for being more than or equal to the 3rd preset temperature at winding temperature, stops applying direct current to winding.
Further, damp-eliminating apparatus also comprises the multiple first winding temperature detectors (not shown) be arranged in wind-driven generator, and wherein, winding temperature is the mean value of the temperature that the plurality of first winding temperature detector records.
In addition, the control strategy of each current control unit corresponding to each above-mentioned temperature range can adopt in above-described embodiment two the various concrete control strategy introduced, and does not repeat them here.
Embodiment four
As shown in Figures 2 to 7, the present embodiment relates to the dehumidifying system of wind-driven generator, and it mainly comprises damp-eliminating apparatus and the stator of wind-driven generator or a three-phase windings unit 14 of rotor or multiple three-phase windings unit 14 that embodiment three introduces.Namely the generator windings that damp-eliminating apparatus of the present invention or dehumidifying system relate to can be stator winding, also can be rotor windings, and the number of three-phase windings unit 14 is not limit.Each three-phase windings unit 14 comprises U, V, W three-phase windings, and three-phase windings can adopt delta connection also can adopt wye connection.
What the three-phase windings unit 14 shown in Fig. 2 adopted is delta connection, and the output (in figure terminal 2 and terminal 3) of the three-phase windings in three-phase windings unit 14 and DC power supply 11 forms series loop.Delta connection winding externally has 6 joints, and can be connected by three-phase windings very easily, the direct current that three-phase is flow through is identical, thus motor is heated evenly.
Alternatively, what the three-phase windings unit 14 shown in Fig. 3 adopted is wye connection, winding due to wye connection is not easy to carry out three-phase windings and is connected in series, therefore, in this three-phase windings unit 14, also comprise two winding access K switch 2 and K3 and winding access on-off controller 141, and the free end of a phase winding (such as Figure 3 shows that winding W) in the three-phase windings of three-phase windings unit 14 is connected with an output (terminal 3) of DC power supply 11, the free end of other two phase windings (such as Figure 3 shows that winding U with V) is connected with another output (terminal 2) of DC power supply 11 with K3 respectively by two winding access K switch 2, winding access on-off controller 141 is for carrying out switch control rule to two winding access K switch 2 and K3, other two phase windings are made alternately to access another output (terminal 2) of DC power supply 11, thus ensure that any time has two phase windings to have electric current to flow through.Along with the lengthening of wind-driven generator dehumidifying time and the switching of different phase winding, the winding of wind-driven generator and core portion finally can be made to become the hot equipotentiality body of thermally equivalent.
Further, the second winding temperature detector that three-phase windings unit 14 can also comprise the winding temperature measuring other two phase windings (such as Figure 3 shows that winding U and V) is respectively (not shown, this the second winding temperature detector also can be the part in above-mentioned multiple first winding temperature detector, such as, the first winding temperature detector corresponding to winding U and V is adopted to serve as this second winding temperature detector), the winding temperature of other two phase windings that winding access on-off controller 141 records according to the second winding temperature detector (not shown), calculate the temperature difference between other two phase windings, if this temperature difference exceedes predetermined threshold value (such as, this predetermined threshold value can between 10K to 20K value, K is kelvin degree unit, this predetermined threshold value specifically sets according to concrete generator type and application scenarios), then switch control rule is carried out to described two windings access switch, other two phase windings described are made alternately to access another output of described DC power supply 11.Such as, when the state of front winding access switch is that K2 is closed, K3 disconnects, when after heating a period of time, the temperature of winding U raises, and when the temperature difference between winding U and winding V is higher than predetermined threshold value, then disconnects K2 and closes K3, winding V is made to be linked in DC power supply 11, start to heat winding V, so repeatedly, make winding U roughly the same with the temperature of winding V.
In addition, it will be understood by those skilled in the art that, the quantity of its three-phase windings of the wind-driven generator of different type of machines can difference to some extent, namely the wind-driven generator had may have multiple three-phase windings unit 14, with reference to Fig. 4, it is the expansion of the system configuration of delta connection, system after expansion comprises n three-phase windings unit 14 and 3n phase winding, wherein, n three-phase windings unit 14 is connected by parallel way, for each three-phase windings unit 14, the control mode of its winding temperature and consistent in Fig. 2, do not repeat them here.
As shown in Figure 5, its system configuration for the wye connection shown in Fig. 3 is expanded, the same with Fig. 4, system after expansion comprises the damp-eliminating apparatus shown in a set of Fig. 1, a n three-phase windings unit 14, a n winding access on-off controller 141,2n winding access switch (K2 and K3) and 3n phase winding, wherein, n three-phase windings unit 14 is connected by parallel way, for each three-phase windings unit 14, the control mode of its winding temperature and winding access the control mode of switch and consistent in Fig. 3, do not repeat them here.
In addition, three-phase windings unit 14 can also be connected by series system, as shown in Figures 6 and 7.
As shown in Figure 6, its another kind of system configuration being the delta connection shown in Fig. 2 is expanded, the same with Fig. 4, system after expansion comprises n three-phase windings unit 14 and 3n phase winding, wherein, n three-phase windings unit 14 is connected by series system and (is connected in series exemplarily with two three-phase windings unit 14 in figure, in actual applications, series system as illustrated in the drawing can be adopted to be connected in series by multiple three-phase windings unit 14), for each three-phase windings unit 14, the control mode of its winding temperature and consistent in Fig. 2, do not repeat them here.
As shown in Figure 7, its system configuration for the wye connection shown in Fig. 3 is expanded, system after expansion comprises the damp-eliminating apparatus shown in a set of Fig. 1, n three-phase windings unit 14, n winding access on-off controller 141, 2n winding access switch (K2 and K3) and 3n phase winding, wherein, n three-phase windings unit 14 is connected by series system and (is connected in series exemplarily with two three-phase windings unit 14 in figure, in actual applications, series system as illustrated in the drawing can be adopted to be connected in series by multiple three-phase windings unit 14), for each three-phase windings unit 14, the control mode of its winding temperature and winding access the control mode of switch and consistent in Fig. 3, do not repeat them here.
It should be noted that, those skilled in the art are to be understood that, the function of above-mentioned winding access on-off controller 141 also can be incorporated in current control module 13 to concentrate carries out computer heating control, on-off controller 141 in different three-phase windings unit 14 also can be integrated into a control module and carry out execution control function, and each control module in the present invention or unit can also be incorporated in blower fan control system and exercise its controlling functions.
Introduce again in actual applications below, the concrete formation example of above-mentioned damp-eliminating apparatus part.As shown in Figures 2 to 7, the DC power supply 11 in above-mentioned damp-eliminating apparatus can be made up of alternating-current switch K1, ac power input end (terminal 1), multiple low pressure parallel connection direct power supply 11 (the AC/DC module in figure), DC fuse (being arranged on terminal 2 and 3 place) and diesel engine generator.Terminal 1 can be become with the case of blower fan system by cable and is connected, and introduces the device power supply (DPS) of wind-driven generator as power source, or diesel engine generator also can be adopted to power, also can save terminal 1 and external cable in this case.Terminal 2 and terminal 3 are connected to wind-driven generator winding by cable, apply DC circuit to winding.In addition, the moment induced voltage produced for avoiding switch OFF punctures the insulation protection of winding coil, and connected adjustable resistance R in generator windings link circuit.
DC power supply 11 belongs to off-line firing equipment, and it moves with easy for installation, and configurable movable trailer is used for the dehumidifying work of different seats in the plane generator.During dehumidifying, DC power supply 11 is placed on outside tower cylinder, termination case low pressure side or a generator, is connected with generator windings in other end access tower cylinder.
In actual applications, current control module 13 shown in dotted line frame in Fig. 2, except each current control unit comprising above-described embodiment three, can also comprise communication interface and power interface.Communication interface is by terminal 4 connection control cable, (winding temperature acquisition module 12 can be included in blower fan control system with blower fan control system in realization, namely utilize the acquisition that the winding temperature monitoring modular in existing blower fan system realizes winding temperature) communication, specifically can comprise two aspects: on the one hand, current control module 13 sends instruction fan control system by terminal 4, requirement enters winding heating mode, then K switch 1 closes by blower fan control system, and obtains the winding temperature of feedback from blower fan control system; On the other hand, current control module 13, according to the generator windings temperature fed back, generates Current Control instruction according to control strategy, controls DC power supply 11.Power interface introduces DC power supply 11, as the power supply of control module by No. 5 terminals from blower fan system.
In sum, the dehumidifying method of the wind-driven generator that the embodiment of the present invention provides, device and system, apply direct current by the winding of direction wind-driven generator and carry out heating dehumidifying, and the amplitude of variation of direct current is adjusted according to the degree of closeness between winding temperature and default temperature, thus realize safe and reliable dehumidifying, and carry out heating dehumidifying owing to utilizing the winding of self, therefore, not by the restriction of site conditions, on-the-spot directly application can be used at wind-driven generator, need not motor be disassembled.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (21)
1. a dehumidifying method for wind-driven generator, is characterized in that, comprising:
Winding in the three-phase windings unit of direction wind-driven generator applies direct current, and obtains winding temperature, and carry out Current Control according to described winding temperature to described direct current, described Current Control comprises:
If described winding temperature is greater than described first preset temperature and is less than the second preset temperature, then adjust described direct current according to the described winding temperature got, described direct current is progressively increased, described winding temperature is more close to described second preset temperature, the amplitude that described direct current increases is less, if described winding temperature equals described second preset temperature, then keep described direct current constant.
2. method according to claim 1, it is characterized in that, described Current Control also comprises: if described winding temperature is less than or equal to described first preset temperature, then make described direct current rise to according to predetermined climbing speed the initial DC electric current being less than winding rated current from zero, and keep this initial DC electric current.
3. method according to claim 2, is characterized in that, described initial DC electric current is less than or equal to winding rated current 30%.
4. method according to claim 1, it is characterized in that, described Current Control also comprises: if described winding temperature is greater than described second preset temperature and be less than described 3rd preset temperature, then adjust described direct current according to the described winding temperature got, described direct current is progressively reduced, described winding temperature is more close to described second preset temperature, and the amplitude that described direct current reduces is less.
5. method according to claim 4, is characterized in that, described Current Control also comprises: if described winding temperature is more than or equal to described 3rd preset temperature, then stop applying described direct current to winding.
6. method according to claim 1, it is characterized in that, described acquisition winding temperature for obtain described winding temperature with predetermined time interval, then adjusts described direct current according to the described winding temperature got and is specially: use following formula to the described direct current of adjustment
I
n+1＝I
n×K
1；
K
1＝A
1-B
1×(t-T
1)-C
1×dt，
Wherein, I
nrepresent the direct current of current time, I
n+1represent the direct current of the subsequent time after adjustment, K
1for electric current regulation coefficient, t is the winding temperature that current time obtains, and dt is the difference of winding temperature that the winding temperature that obtains of current time and previous moment obtain, T
1be the first preset temperature, A
1, B
1, C
1for the winding temperature rise gradient parameter preset.
7. method according to claim 4, it is characterized in that, described acquisition winding temperature for obtain described winding temperature with predetermined time interval, then adjusts described direct current according to the described winding temperature got and is specially: use following formula to adjust described direct current
I
n+1＝I
n×K
2；
K
2＝A
2-B
2×(t-T
2)-C
2×dt，
Wherein, I
nrepresent the direct current of current time, I
n+1represent the direct current of the subsequent time after adjustment, K
2for electric current regulation coefficient, t is the winding temperature that current time obtains, and dt is the difference of winding temperature that the winding temperature that obtains of current time and previous moment obtain, T
2be the second preset temperature, A
2, B
2, C
2for the winding temperature rise gradient parameter preset.
8. method according to claim 1, is characterized in that, described winding temperature is the mean value of the temperature that the multiple first winding temperature detectors be arranged in described wind-driven generator record.
9. a damp-eliminating apparatus for wind-driven generator, is characterized in that, comprises DC power supply, winding temperature acquisition module and current control module,
The winding that described DC power supply is used for direction wind-driven generator applies direct current;
Described winding temperature acquisition module is for obtaining winding temperature;
Described current control module is used for carrying out Current Control according to described winding temperature to described direct current,
Described current control module comprises the first current control unit: for being greater than described first preset temperature at described winding temperature and being less than the second preset temperature, described winding temperature according to getting adjusts described direct current, described direct current is progressively increased, described winding temperature is more close to described second preset temperature, the amplitude that described direct current increases is less, if described winding temperature equals described second preset temperature, then keep described direct current constant.
10. device according to claim 9, it is characterized in that, described damp-eliminating apparatus also comprises the second current control unit, for when described winding temperature is less than or equal to described first preset temperature, make described direct current rise to according to predetermined climbing speed the initial DC electric current being less than winding rated current from zero, and keep this initial DC electric current.
11. devices according to claim 10, is characterized in that, described initial DC electric current is less than or equal to winding rated current 30%.
12. devices according to claim 9, it is characterized in that, described damp-eliminating apparatus also comprises the 3rd current control unit, for being greater than described second preset temperature at described winding temperature and being less than described 3rd preset temperature, described winding temperature according to getting adjusts described direct current, described direct current is progressively reduced, and described winding temperature is more close to described second preset temperature, and the amplitude that described direct current reduces is less.
13. devices according to claim 10, is characterized in that, described damp-eliminating apparatus also comprises the 4th current control unit, for when described winding temperature is more than or equal to the 3rd preset temperature, stop applying described direct current to described winding.
14. devices according to claim 9, it is characterized in that, described winding temperature acquisition module obtains described winding temperature with predetermined time interval, then in described first current control unit, adjust described direct current according to the described winding temperature got to be specially: use following formula to the described direct current of adjustment
I
n+1＝I
n×K
1；
K
1＝A
1-B
1×(t-T
1)-C
1×dt，
Wherein, I
nrepresent the direct current of current time, I
n+1represent the direct current of the subsequent time after adjustment, K
1for electric current regulation coefficient, t is the winding temperature that current time obtains, and dt is the difference of winding temperature that the winding temperature that obtains of current time and previous moment obtain, T
1be the first preset temperature, A
1, B
1, C
1for the winding temperature rise gradient parameter preset.
15. devices according to claim 12, it is characterized in that, described winding temperature acquisition module obtains described winding temperature with predetermined time interval, then in described 3rd current control unit, adjust described direct current according to the described winding temperature got to be specially: use following formula to the described direct current of adjustment
I
n+1＝I
n×K
2；
K
2＝A
2-B
2×(t-T
2)-C
2×dt，
Wherein, I
nrepresent the direct current of current time, I
n+1represent the direct current of the subsequent time after adjustment, K
2for electric current regulation coefficient, t is the winding temperature that current time obtains, and dt is the difference of winding temperature that the winding temperature that obtains of current time and previous moment obtain, T
2be the second preset temperature, A
2, B
2, C
2for the winding temperature rise gradient parameter preset.
16. devices according to claim 9, is characterized in that, described device also comprises the multiple first winding temperature detectors be arranged in described wind-driven generator, and described winding temperature is the mean value of the temperature that described multiple first winding temperature detector records.
The dehumidifying system of 17. 1 kinds of wind-driven generators, is characterized in that, comprise as arbitrary in claim 9 to 16 as described in damp-eliminating apparatus and the stator of wind-driven generator or a three-phase windings unit of rotor or multiple three-phase windings unit.
18. systems according to claim 17, is characterized in that, described three-phase windings unit adopts delta connection, and the three-phase windings in described three-phase windings unit and the output of described DC power supply form series loop.
19. systems according to claim 17, it is characterized in that, described three-phase windings unit adopts wye connection, two winding access switches and winding access on-off controller is also comprised in described three-phase windings unit, the free end of the phase winding in the three-phase windings of described three-phase windings unit is connected with an output of described DC power supply, the free end of other two phase windings is connected with another output of described DC power supply respectively by described two windings access switch, described winding access on-off controller is used for carrying out switch control rule to two described winding access switches, other two phase windings described are made alternately to access another output of described DC power supply.
20. systems according to claim 19, it is characterized in that, described three-phase windings unit also comprises the second winding temperature detector of the winding temperature measuring other two phase windings described respectively, the winding temperature of other two phase windings described in described winding access on-off controller records according to described second winding temperature detector, calculate the temperature difference between other two phase windings described, if this temperature difference exceedes predetermined threshold value, then switch control rule is carried out to described two windings access switch, other two phase windings described are made alternately to access another output of described DC power supply.
21., according to claim 17 to 20 arbitrary described systems, is characterized in that, described multiple three-phase windings unit in parallel or be connected on described damp-eliminating apparatus the output of DC power supply between.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104901492A (en) * | 2015-05-14 | 2015-09-09 | 北京天诚同创电气有限公司 | Moisture drying and heating control method and system of wind driven generator |
| CN105846618A (en) * | 2016-03-25 | 2016-08-10 | 中国冶集团有限公司 | Motor drying device and drying method |
| CN106339019A (en) * | 2015-07-15 | 2017-01-18 | 成都阜特科技股份有限公司 | Internal dehumidification device and dehumidification method of permanent magnet AC motor |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0956097A (en) * | 1995-08-10 | 1997-02-25 | Toshiba Corp | Insulated coil for rotating electric machine and its manufacture |
| CN101478202A (en) * | 2008-01-02 | 2009-07-08 | 新疆金风科技股份有限公司 | Heating and dehumidifying method and apparatus for motor |
| CN202872700U (en) * | 2012-08-29 | 2013-04-10 | 中国一冶集团有限公司 | Motor control circuit having insulation automatic maintenance and drying function |
-
2014
- 2014-11-18 CN CN201410659032.2A patent/CN104377911B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0956097A (en) * | 1995-08-10 | 1997-02-25 | Toshiba Corp | Insulated coil for rotating electric machine and its manufacture |
| CN101478202A (en) * | 2008-01-02 | 2009-07-08 | 新疆金风科技股份有限公司 | Heating and dehumidifying method and apparatus for motor |
| CN202872700U (en) * | 2012-08-29 | 2013-04-10 | 中国一冶集团有限公司 | Motor control circuit having insulation automatic maintenance and drying function |
Non-Patent Citations (1)
| Title |
|---|
| 左宝信: "《用电设备和用电的节能方法》", 31 October 1998 * |
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| CN107525823A (en) * | 2016-06-20 | 2017-12-29 | 新疆金风科技股份有限公司 | Monitor the pilot system of the magnetic pole temperature of permanent-magnetic wind driven generator |
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| CN107478348A (en) * | 2017-08-09 | 2017-12-15 | 中国标准化研究院 | Winding temperature rise detection means, device and method |
| CN108390493A (en) * | 2018-01-24 | 2018-08-10 | 广西投资集团方元电力股份有限公司桥巩水电站分公司 | A kind of hydrogenerator dampproof method and equipment |
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