CN108798987A - A kind of marine tidal-current energy generator group and its generator course changing control monitoring method - Google Patents
A kind of marine tidal-current energy generator group and its generator course changing control monitoring method Download PDFInfo
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- CN108798987A CN108798987A CN201810595977.0A CN201810595977A CN108798987A CN 108798987 A CN108798987 A CN 108798987A CN 201810595977 A CN201810595977 A CN 201810595977A CN 108798987 A CN108798987 A CN 108798987A
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- Prior art keywords
- generator
- current energy
- marine tidal
- control system
- master control
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
-
- 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
- Y02E10/20—Hydro energy
-
- 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
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Abstract
The invention discloses a kind of marine tidal-current energy generator group and its generator course changing control monitoring methods, and marine tidal-current energy generator group is horizontal axial type, using 0 ° of -270 ° of feather generator positive and negative rotation system；Method includes：If short time average flow direction is at 0 ° -180 °, for generating set propeller pitch angle at -5 ° -95 °, then it is to rotate in the forward direction counterclockwise that master control system, which gives current transformer control generator speed direction,；If short time average flow direction is not at 0 ° -180 °, for generating set propeller pitch angle at 175 ° -275 °, then it is to reversely rotate clockwise that master control system, which gives current transformer control generator speed direction,；The generator direction of rotation comparison for the generator positive and negative rotation instruction and generator encoder actual feedback that can be also given by master control system is further judged；The present invention solves the problems, such as the marine tidal-current energy unit automatic controlling and monitoring that generator turns to during flood tide, ebb and slack tide, realizes unit safety stable operation, is suitable for popularization and application.
Description
Technical field
The present invention relates to marine tidal-current energy technical field of power generation, turn more particularly to a kind of marine tidal-current energy generator group and its generator
To control monitoring method.
Background technology
Tide is the periodical seawater the fluctuation phenomenon that seawater is formed under the graviational interactions such as the moon, the sun, seawater trend companion
With two kinds of forms of motion：First, seawater vertical lift, i.e. signified tide caused by flood tide and ebb；Second is that the horizontal fortune of seawater
It moves, i.e. trend.Energy entrained by tide is potential energy；And the energy entrained by trend is kinetic energy.
Marine tidal-current energy power generation has the characteristics that：Marine tidal-current energy is renewable and clean energy resource；The energy density of marine tidal-current energy is much larger than
Wind energy；Marine tidal-current energy be it is a kind of can be with space, the energy of time change, variational regularity is apparent, and can carry out prediction；Trend
It can generate electricity and be not necessarily to carry out building dam as power station, marine environment be influenced small.Therefore, the unit that exploitation design is generated electricity using marine tidal-current energy
All have great importance for energy supply diversity, using renewable and clean energy resource.
Existing marine tidal-current energy generator group is generally without yaw system, the main generating equipment using one-directional rotation, wherein single
The energy that unidirectional trend is only captured to the generating equipment of rotation will produce the waste of marine tidal-current energy resource.Therefore, applicant, which is directed to, is somebody's turn to do
Kind situation devises the generating equipment with Double-directional rotary, and energy when two-way incoming can be realized by wide-angle pitch-controlled system
Capture, greatly improves the utilization rate of marine tidal-current energy resource；But for the generating equipment of Double-directional rotary, currently without actual two-way
Forward and reverse switching is generally manually operated in switching method.And general lack of basis for estimation is manually operated and easy tos produce erroneous judgement, in turn
Cause to break down and needs to shut down and missed portion marine tidal-current energy resource.
It can be seen that above-mentioned existing marine tidal-current energy generator group is in positive and negative rotation control monitoring, it is clear that there are still have inconvenience
With defect, and need to be further improved.How to found it is a kind of can efficiently utilize two-way incoming when marine tidal-current energy resource simultaneously
The marine tidal-current energy generator group and its generator course changing control monitoring method for realizing safe and stable operation become current industry urgent need and change
Into target.
Invention content
The technical problem to be solved in the present invention is to provide it is a kind of can efficiently utilize two-way incoming when marine tidal-current energy resource and real
The marine tidal-current energy generator group and its generator course changing control monitoring method of existing safe and stable operation,.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
On the one hand, the present invention provides a kind of marine tidal-current energy generator group generator course changing control monitoring method, the marine tidal-current energy
Generating set is horizontal axial type, using 0 ° of -270 ° of feather generator positive and negative rotation system；The method includes：
If short time average flow direction is at 0 ° -180 °, at -5 ° -95 °, then master control system is given becomes generating set propeller pitch angle
Stream device control generator speed direction is to rotate in the forward direction counterclockwise；
If short time average flow direction is not at 0 ° -180 °, generating set propeller pitch angle at 175 ° -275 °, then give by master control system
It is to reversely rotate clockwise to determine current transformer control generator speed direction.
It further improves, is judged first according to short time average flow direction, according further to hair as the present invention
Motor group propeller pitch angle is judged, the judgement of short time average flow direction is back to if not meeting corresponding pitch corner condition.
Further, the short time average flow direction is 3-10min average flow directions.
Further, the short time average flow direction is 5min average flow directions.
Further, the marine tidal-current energy generator group generator course changing control monitoring method further includes：
The generator rotation of the generator positive and negative rotation instruction and generator encoder actual feedback that are given by master control system
Direction is compared, and if there is inconsistent, is then first compared with pre-set slack period generator speed limits value, super
When going out slack period generator speed limits value, need to carry out disorderly closedown.
Further, the slack period generator speed limits value is 45-55RPM/s.
Further, the slack period generator speed limits value is 50RPM/s.
On the other hand, the present invention provides a kind of marine tidal-current energy generator group, including master control system and is connect with master control system
Pitch-controlled system, current transformer and current meter；Computer program is stored in the master control system, the master control system executes the meter
Above-mentioned method and step is realized when calculation machine program.
Further, the marine tidal-current energy generator group is horizontal axial type, is transfered from one department to another using 0 ° of -270 ° of feather generator is positive and negative
System.
Further, the marine tidal-current energy generator group is two blade generating set of horizontal axial type.
By using above-mentioned technical proposal, the present invention has at least the following advantages：
1, the present invention is for the marine tidal-current energy generator using horizontal axial type, 0 ° of -270 ° of feather generator positive and negative rotation system
Group is provided for a kind of the automatically controlling of generator speed direction, monitoring method during flood tide ebbs tide generator operation, avoids
Drawback caused by manual operation positive and negative rotation switching can efficiently utilize marine tidal-current energy resource when two-way incoming, meanwhile, for flat
The switching of generator speed direction gives automatic judging method during the damp phase shuts down, and avoids non-faulting shutdown, realizes unit
Safe and stable operation.
2, the present invention is by experimental results demonstrate using short time average flow direction, especially 5min average flow directions are used as
Basis for estimation judges precisely, to substantially increase the accuracy rate of switching.
3, the present invention has found by long-term experiment, and when slack period generator speed limits value is 50RPM/s, False Rate is most
It is low.
Description of the drawings
The above is merely an overview of the technical solutions of the present invention, in order to better understand the technical means of the present invention, below
In conjunction with attached drawing, the present invention is described in further detail with specific implementation mode.
Fig. 1 is that master control system gives generator positive and negative rotation flag bit program flow diagram；
Fig. 2 is master control system monitoring generator positive and negative rotation program mal flow chart.
Specific implementation mode
The present invention mainly during developing marine tidal-current energy unit, for the horizontal axial type of designed, designed, two blades,
The marine tidal-current energy generator group of 0 ° of -270 ° of feather generator positive and negative rotation system devises a kind of generator course changing control prison for it
Survey method, to solve unit during flood tide and ebb and slack tide, the control and monitoring problem that generator turns to, control prison
Survey method includes mainly two parts, and respectively master control system gives generator positive and negative rotation flag bit and master control system monitoring power generation
Machine positive and negative rotation program mal, below describes to it in detail.
(1) master control system gives generator positive and negative rotation flag bit, coordinates shown in Fig. 1：
(1) because seawater is in flood tide and at ebb tide, the flow direction of seawater is different, and flows to more stable.Therefore first have into
The acquisition and judgement of row flow direction.Judged using short time average flow direction in the method for the present invention, in the range of 0 ° -360 °,
Range is flowed to when being defined as ebb in 0 ° -180 °, being defined as flood tide in 180 ° -360 ° flows to range.By many experiments
It proves, basis for estimation is used as using 3-10min average flow directions, especially 5min average flow directions, judge precisely, to be greatly improved
The accuracy rate of switching.
(2) 0 ° of -270 ° of pitch-variable system of unit design, on the ebb when propeller pitch angle at 0 °
- 90 ° are adjusted, and propeller pitch angle is adjusted at 180 ° -270 ° when flood tide.Pass through the change of blade pitch angle
It is dynamic, the absorption to trend energy is adjusted, and then drive generator rotary electrification.Therefore master control system gives generator positive and negative rotation mark
Will position needs to judge pitch angle state in which.It is above-mentioned flow to condition meet under the premise of, when propeller pitch angle -5 ° -
At 95 °, generator stress (forward direction) will rotate counterclockwise, and master control system gives generator direction of rotation flag bit and (represented inverse for 1
Hour hands rotate in the forward direction).When propeller pitch angle is at 175 ° -275 °, generator (reversed) rotation, master control system will give power generation clockwise
Machine direction of rotation flag bit is -1 (being rotated clockwise).
Usual unit operation propeller pitch angle is run in 0 ° -90 ° and 180 ° -270 ° of section, but since pitch-controlled system is
By speed discrepancy, output propeller pitch angle instruction after PI adjustings is carried out, variable pitch executing agency is given, realizes that propeller pitch angle is adjusted.Propeller pitch angle
PI adjustings have overshoot, therefore here given the determination range of 175 ° -275 ° of -5 ° -95 ° of ebb propeller pitch angle and flood tide propeller pitch angle.
(2) master control system monitors generator positive and negative rotation program mal, coordinates shown in Fig. 2：
Master control system monitors generator positive and negative rotation program mal general thought, and the generator given by master control system is positive and negative
The generator direction of rotation for turning mark bit instruction and generator encoder actual feedback is compared, if there is inconsistent, need
Carry out disorderly closedown.
When the generator direction of generator encoder actual feedback is counterclockwise (forward direction), and the given generator of master control system
Flag bit is also (forward direction) counterclockwise, is at this time normal condition.With should generator encoder actual feedback generator direction
For clockwise (reversed), and it is (reversed) clockwise that master control system, which gives generator flag bit also, is also normal condition at this time.On
It is abnormal condition to state other states except two states.
Unit needs to shut down progress propeller pitch angle commutation, goes to meet flood tide, the flow direction of ebb in slack tide.Its propeller pitch angle will
There is the angle in 95 ° of -175 ° of sections, but due to being slack period, flow velocity is smaller, the rotating speed of generator is smaller, can be by flat
Damp phase generator speed setting limits value escapes such fault condition.
Slack period generator speed setting limits value 45-55RPM/s in the method for the present invention, it is preferable that flat by 1S
Equal generator speed variable GenSpeed1S >=50RPM (the grid-connected rotating speed of unit design is 122RPM, rated speed 301RPM) is come
It realizes.If meeting above-mentioned condition, unit will quote generator and turn to fault, shut down and propeller pitch angle receives security bit
It sets.It is inconsistent that generator flag bit appearance is given with master control system when the generator direction of generator encoder actual feedback
When, then it is first compared with pre-set slack period generator speed limits value, exceeds slack period generator speed limits value
When, it needs to carry out disorderly closedown.
It is horizontal axial type, two blades, 0 ° of -270 ° of variable pitch in addition, the present invention also provides a kind of marine tidal-current energy generator group
Marine tidal-current energy generator group away from generator positive and negative rotation system, including master control system and connect with master control system pitch-controlled system, become
Stream device and current meter (for measuring flow direction)；Computer program is stored in the master control system, the master control system executes institute
Above-mentioned control monitoring method step is realized when stating computer program.
The marine tidal-current energy generator group and its generator course changing control monitoring method of the present invention automatically controlling monitoring side for one kind
Method avoids drawback caused by manual operation positive and negative rotation switching, can efficiently utilize marine tidal-current energy resource when two-way incoming, together
When, generator speed direction, which switches, during being shut down for slack period gives automatic judging method, avoids non-faulting shutdown, real
Unit safety stable operation is showed, has been suitable for popularization and application.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, this
Field technology personnel make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above, all fall within this hair
In bright protection domain.
Claims (10)
1. a kind of marine tidal-current energy generator group generator course changing control monitoring method, which is characterized in that the marine tidal-current energy generator group
For horizontal axial type, using 0 ° of -270 ° of feather generator positive and negative rotation system；The method includes：
If short time average flow direction is at 0 ° -180 °, for generating set propeller pitch angle at -5 ° -95 °, then master control system gives current transformer
Control generator speed direction is to rotate in the forward direction counterclockwise；
If short time average flow direction is not at 0 ° -180 °, at 175 ° -275 °, then master control system is given becomes generating set propeller pitch angle
It is to reversely rotate clockwise to flow device control generator speed direction.
2. marine tidal-current energy generator group generator course changing control monitoring method according to claim 1, which is characterized in that first
Judged according to short time average flow direction, judged according further to generating set propeller pitch angle, is not met such as corresponding
Pitch corner condition is then back to the judgement of short time average flow direction.
3. marine tidal-current energy generator group generator course changing control monitoring method according to claim 1, which is characterized in that described
Short time average flow direction is 3-10min average flow directions.
4. marine tidal-current energy generator group generator course changing control monitoring method according to claim 3, which is characterized in that described
Short time average flow direction is 5min average flow directions.
5. according to claim 1-4 any one of them marine tidal-current energy generator group generator course changing control monitoring methods, feature
It is, the method further includes：
Pass through the generator direction of rotation of generator positive and negative rotation instruction and generator encoder actual feedback that master control system gives
It is compared, if there is inconsistent, is then first compared with pre-set slack period generator speed limits value, beyond putting down
When damp phase generator speed limits value, need to carry out disorderly closedown.
6. marine tidal-current energy generator group generator course changing control monitoring method according to claim 5, which is characterized in that described
Slack period generator speed limits value is 45-55RPM/s.
7. marine tidal-current energy generator group generator course changing control monitoring method according to claim 6, which is characterized in that described
Slack period generator speed limits value is 50RPM/s.
8. a kind of marine tidal-current energy generator group, which is characterized in that the pitch-controlled system that is connect including master control system and with master control system becomes
Flow device and current meter；
It is stored with computer program in the master control system, realizes that right is wanted when the master control system executes the computer program
Seek 1-7 any one of them method and steps.
9. marine tidal-current energy generator group according to claim 8, which is characterized in that the marine tidal-current energy generator group is trunnion axis
Formula, using 0 ° of -270 ° of feather generator positive and negative rotation system.
10. marine tidal-current energy generator group according to claim 9, which is characterized in that the marine tidal-current energy generator group is level
Two blade generating set of shaft type.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810595977.0A CN108798987B (en) | 2018-06-11 | 2018-06-11 | tidal current energy generator set and generator steering control monitoring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810595977.0A CN108798987B (en) | 2018-06-11 | 2018-06-11 | tidal current energy generator set and generator steering control monitoring method thereof |
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| CN108798987A true CN108798987A (en) | 2018-11-13 |
| CN108798987B CN108798987B (en) | 2020-01-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979945A (en) * | 2018-09-14 | 2018-12-11 | 国电联合动力技术有限公司 | A kind of the marine tidal-current energy generator group and its system of two-way power generation |
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