CN109992831A - A kind of selection method of hydrogovernor - Google Patents
A kind of selection method of hydrogovernor Download PDFInfo
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- CN109992831A CN109992831A CN201910152934.XA CN201910152934A CN109992831A CN 109992831 A CN109992831 A CN 109992831A CN 201910152934 A CN201910152934 A CN 201910152934A CN 109992831 A CN109992831 A CN 109992831A
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Abstract
The present invention provides a kind of hydrogovernor selection method, comprising: step 1: calculating servomotor diameter dc；Step 2: calculating the maximum opening a that guide vanes of water turbine is characterized with aperture circular diameter0maxAnd servomotor range Smax.Wherein, a0maxAccording to formulaIt seeks, SmaxAccording to formula Smax=(1.4~1.8) a0maxIt seeks；Step 3: according to servomotor diameter dcAnd servomotor range SmaxIt asks and calculates servomotor volume V.Wherein,Step 4: according to the servomotor volume V and equivalent shut-in time T of servomotorfCalculate and select hydrogovernor main control valve diameter d.Wherein,Step 5: hydrogovernor model is selected by professional standard according to main control valve diameter.The method of the present invention is simple and quick, reliability with higher, especially a0maxCalculating relative error be no more than 0.25%.
Description
Technical field
The present invention relates to power station Hydropower Unit control technology field more particularly to a kind of hydrogovernor type selecting sides
Method.
Background technique
Hydrogovernor is the task equipment that hydroelectric power plant directly controls turbine-generator units, for controlling hydrogenerator
Each working links such as booting, zero load, grid-connected, increasing and decreasing load, the shutdown of group, can guarantee that unit frequency exists before set grid-connection
It is adjusted in 50Hz ± 0.2Hz, unit load is adjusted according to load setting value after grid-connected and participates in system by preset parameter
Primary frequency modulation.Primary control one of of the hydrogovernor as turbine-generator units, is directly related to hydroelectric machine
Therefore the reliability and safety of group control select a suitable hydrogovernor to be just particularly important.
The effect of hydrogovernor is according to controlled volume (such as generating unit speed, guide vane opening and unit active power) and to refer to
The deviation for enabling signal generates control signal according to certain control strategy, then by control guide vane servomotor (to rotary propeller type unit
Further include blade servomotor) opening size of guide vane (blade) is controlled, so that the size for controlling hydraulic turbine water flow is come
Adjust the revolving speed of the hydraulic turbine or the effect of power output.
Hydrogovernor is divided into mechanical-hydraulic type governor (i.e. ST and T-type) by regulating element, electric gas/liquid pressure die mould adjusts the speed
Device (DST type and DT type), microcomputer type governor (i.e. WST type and WT type)；But third seed type water wheels have been generallyd use now
Machine governor.For example, the hydrogovernor of model WT-80-2.5, represents and be meant that: the hydrogovernor is micro-
Type governor, main control valve diameter are 80mm, and the rated oil pressure grade of hydrogovernor hydraulic operating system is
2.5Mpa。
It is therefore seen that hydrogovernor selection is appropriate in the case where having seted the tone and saving component type and rated oil pressure level condition
Whether be dependent on the size of main control valve diameter.
Therefore, in the power station concept phase for the water turbine governing that selects a model appropriate according to actual needs
Device, it is necessary to calculate one of them critically important parameter, i.e. hydrogovernor main control valve diameter, and select on this basis
Select the model of hydrogovernor.And it has to calculate prototype according to model turbine maximum opening of guide vane to calculate the parameter
Maximum opening of guide vane value, the maximum opening of guide vane value are indicated with guide vane opening circular diameter.However, being given at present in hydraulic turbine industry
Model turbine guide vane opening out is essentially all to be indicated with guide vane corner, this just produces the type selecting of hydrogovernor
Obstacle is given birth to.The conventional method for overcoming this obstacle at present is to be with model turbine guide vane corner, guide vane pattern and guide vane number
Foundation draws corresponding guide vane layout drawing further according to the prototype guide vane pitch circle diameter and prototype guide vane size that are calculated,
And maximum opening of guide vane circular diameter is measured in this figure, it could finally complete the work of hydrogovernor type selecting, this selection
Method process is cumbersome, and low efficiency.
Summary of the invention
It is an object of the invention to solve above-mentioned obstacle of the existing technology, one kind is provided with guide vanes of water turbine cornerUnder the conditions of defining maximum opening of guide vane, the selection method of hydrogovernor.
With guide vanes of water turbine cornerUnder the conditions of defining maximum opening of guide vane, hydrogovernor selection method,
This method is to calculate acquisition maximum opening of guide vane circular diameter a0maxOn the basis of, to pass through the hydraulic turbine tune further calculated
The model that fast device main control valve diameter d is foundation to select hydrogovernor.With guide vane number Z024 are taken, nominal operation oil pressure
2.5MPa, for double straight-cylinder servomotors, including maximum opening of guide vane circular diameter a0max, servomotor volume V and hydraulic turbine tune
The hydrogovernor selection method counted of fast device main control valve diameter d the following steps are included:
Step 1: calculating servomotor diameter dc；
Step 2: calculating the maximum opening a that guide vanes of water turbine is characterized with aperture circular diameter0maxAnd servomotor range
Smax；
D0=1.16D1 (2)
L1=0.072D0 (3)
Smax=(1.4~1.8) a0max (6)
Wherein, the D1Indicate rotary wheel of water turbine nominal diameter；D0Indicate guide vane pitch circle diameter；Z0Indicate guide vane number；L1
Indicate guide vane center of rotation axis to guide vane tail length；aojIndicate guide vane maximum radial opening value；Indicate guide vane from Quan Guan
Position rotates the degree turned over to radial position, is 82.237 ° for symmetric form guide vane, and asymmetric guide vane is 81.14 °；For the maximum guide vane opening value indicated with guide vane corner；kvIndicate correction factor, symmetric form guide vane selects formula (7), non-right
Title type guide vane selects formula (8).
Step 3: according to servomotor diameter dcAnd servomotor range passes through SmaxServomotor volume V is calculated, by double straight
Cylinder servomotor is calculated by formula (9).
Step 4: according to the servomotor volume V and equivalent shut-in time T of servomotorfIt calculates and selection hydrogovernor master matches
Pressure valve diameter d.
Wherein, the V is servomotor volume, TfFor the servomotor equivalent shut-in time, determined by regulation assurance calculation；V is
Oily flow velocity in pipeline, generally takes v≤4~5m/s.
Step 5: hydrogovernor model is determined by professional standard according to main control valve diameter.
The utility model has the advantages that
The present invention by provide hydrogovernor selection method, according to formula (2)~(5), so that it may directly acquire with
The maximum opening of guide vane value a that maximum opening of guide vane circular diameter indicates0max；According to a0maxServomotor maximum row can be calculated
Journey Smax, to calculate servomotor volume V；Distributing valve diameter can be calculated according to servomotor volume V and other relevant parameters
D, and finally determine the model of hydrogovernor.This method is simple and quick, reliability with higher, especially a0maxMeter
It calculates relative error and is no more than 0.25% or so.
Detailed description of the invention
Fig. 1 is that guide vane is in full pass and radial aperture status diagram；
Fig. 2 is guide vane corner and guide vane opening circular diameter schematic diagram；
Fig. 3 is the guide vane opening circular diameter obtained according to experimental example 2 and guide vane angle relation curve graph, and * is indicated by guide vane
Corner calculates gained opening value, and solid line indicates to calculate resulting opening value by formula.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the technical solution in the present invention is carried out below
Clearly and completely describe.Obviously, described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
Embodiment 1:
The present embodiment provides a kind of hydrogovernor selection methods, comprising: is with hydrogovernor distributing valve diameter d
According to come the model that selects hydrogovernor；Wherein by taking domestic some hydropower station Preliminary design as an example, hydraulic turbine model
HLD307-LJ-290, runner nominal diameter D1=2.9m, guide vane number Z0=24, guide vane blade profile is symmetric form, power station maximum work
Make head Hmax=184.02m, guide vane height b0=0.535m, maximum opening of guide vane (in terms of guide vane corner)
The equivalent shut-in time T of servomotor is obtained by regulation assurance calculationf=5s (takes the quick closedown time for sequence closing rule).It is quasi-
Selecting hydrogovernor is microcomputer type, and nominal operation oil pressure is 4.0MPa.With the matched governor selection steps of hydraulic turbine institute
It is as follows:
Step 1: calculating servomotor diameter dc。
Therefore selection standard servomotor diameter series, dc=0.45m.
It is to be appreciated that it is 2.5MPa calculating that formula (1), which is by operating oil pressure, it must be by formula (2) to 4.0Mpa operating oil pressure grade
It corrects.
Step 2: calculating the maximum opening a that guide vanes of water turbine is characterized with aperture circular diameter0maxAnd servomotor range
Smax。
D0=1.16D1=3.364m (3)
L1=0.072D0=0.242m (4)
Smax=(1.4~1.8) aomax=0.227~0.292m (8)
S is tentatively taken according to formula (8) calculated resultmax=0.292m.
Step 3: according to servomotor diameter dcAnd servomotor range passes through SmaxCalculate servomotor volume V.
Step 4: according to the servomotor volume V and equivalent shut-in time T of servomotorfIt calculates and selection hydrogovernor master matches
Pressure valve diameter d.
Wherein, v takes 4m/s.Main control valve diameter d=80mm is selected according to JB/T7072-2004.
Step 5: hydrogovernor model is determined by professional standard according to main control valve diameter.
According to above-mentioned known conditions and calculated result, it may be determined that hydrogovernor model WT-80-4.0.
Experimental example 1:
Table 1 be with hydraulic turbine nominal diameter 2.5m, guide vane blade profile be it is asymmetric, for guide vane number is 24, according to figure
1, Fig. 2 draws guide vane layout drawing and measures aperture circular diameter, obtains the example that guide vane opening value compares with the calculation method.
1 drawing of table measures aperture circular diameter and calculating method Comparative result sample table (one)
Experimental example 2:
Table 2 is with hydraulic turbine nominal diameter 2.5m, and guide vane blade profile is symmetric form, for guide vane number is 24, according to Fig. 1,
Fig. 2 draws guide vane layout drawing and measures aperture circular diameter, obtains the example that guide vane opening value compares with the calculation method.
2 drawing of table measures aperture circular diameter and calculating method Comparative result sample table (two)
In Fig. 3, solid line is the relation curve that aperture circular diameter and guide vane corner are obtained by guide vane layout drawing, and * is indicated by leading
Leaf corner calculates gained opening value, as can be seen from Figure 3 calculates opening value with by guide vane layout drawing and obtains aperture circular diameter curve co-insides
Property is fine, possesses preferable reliability.
By Tables 1 and 2 it is found that by drawing acquired in guide vane layout drawing with the guide vane represented by guide vane opening circular diameter
Opening value with it is very close with guide vane opening circular diameter acquired in the calculation formula, relative error is no more than
0.25%, therefore the method for the present invention has comparable reliability and rapidity.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (1)
1. a kind of hydrogovernor selection method, which comprises the following steps:
Step 1: calculating servomotor diameter dc；
Wherein, the D1Indicate runner nominal diameter, boIndicate guide vane height, HmaxIndicate hydraulic turbine maximum functional head, λ be with
The related design factor of guide vane pattern, Standard Symmetric Multivariate type guide vane take 0.027~0.030, and asymmetric guide vane takes 0.029~
0.032；
Step 2: calculating the maximum opening a that guide vanes of water turbine is characterized with aperture circular diameter0maxAnd servomotor range Smax；
D0=1.16D1 (2)
L1=0.072D0 (3)
Smax=(1.4~1.8) a0max (6)
Wherein, the D1Indicate rotary wheel of water turbine nominal diameter；D0Indicate guide vane pitch circle diameter；Z0Indicate guide vane number；L1It indicates
Guide vane center of rotation axis is to guide vane tail length；aojIndicate radial opening of guide vane value；Indicate that guide vane is rotated from closed positions
It is 82.237 ° for symmetric form guide vane to radial position angle number, asymmetric guide vane is 81.14 °；For with guide vane corner
The maximum opening of guide vane value of expression；kvIndicate that correction factor, symmetric form guide vane select formula (7), asymmetric guide vane is selected public
Formula (8)；
Step 3: according to servomotor diameter dcAnd servomotor range passes through SmaxCalculate servomotor volume V；
Step 4: according to the servomotor volume V and equivalent shut-in time T of servomotorfCalculate and select hydrogovernor main control valve
Diameter d；
Wherein, the V is servomotor volume, TfFor the servomotor equivalent shut-in time, determined by regulation assurance calculation；V is in pipeline
The flow velocity of oil, generally takes v≤4~5m/s；
Step 5: hydrogovernor model is determined by professional standard according to main control valve diameter.
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| CN201910152934.XA CN109992831B (en) | 2019-02-28 | 2019-02-28 | Model selection method for water turbine speed regulator |
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| CN201910152934.XA CN109992831B (en) | 2019-02-28 | 2019-02-28 | Model selection method for water turbine speed regulator |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007107427A (en) * | 2005-10-12 | 2007-04-26 | Toshiba Corp | Speed ring, and centrifugal pump and water turbine or pump water turbine using the same |
| CN102156045A (en) * | 2011-03-16 | 2011-08-17 | 陕西电力科学研究院 | Method for testing response time constant of main servomotor of hydraulic turbine governor |
| CN102364088A (en) * | 2011-11-03 | 2012-02-29 | 武汉三联水电控制设备有限公司 | Double-feedback positioning high-flow hydraulic control valve and control system of turbine governor |
| US20130113128A1 (en) * | 2011-11-03 | 2013-05-09 | Linde Aktiengesellschaft | Device for bringing about a phase contact between a liquid phase and a gaseous phase, in particluar a heat and mass transfer column |
| CN103696899A (en) * | 2013-11-15 | 2014-04-02 | 陈永远 | Ultra-large type hydroelectric power plant |
| CN105022286A (en) * | 2015-07-01 | 2015-11-04 | 贵州电力试验研究院 | Test method for reaction time constant of main servomotor of water turbine generator set |
| JP2016061151A (en) * | 2014-09-12 | 2016-04-25 | 株式会社東芝 | Guide vane for hydraulic machine and repairing method thereof |
| CN108443057A (en) * | 2018-05-25 | 2018-08-24 | 云南电网有限责任公司电力科学研究院 | A kind of control method and control device of guide vanes of water turbine aperture |
-
2019
- 2019-02-28 CN CN201910152934.XA patent/CN109992831B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007107427A (en) * | 2005-10-12 | 2007-04-26 | Toshiba Corp | Speed ring, and centrifugal pump and water turbine or pump water turbine using the same |
| CN102156045A (en) * | 2011-03-16 | 2011-08-17 | 陕西电力科学研究院 | Method for testing response time constant of main servomotor of hydraulic turbine governor |
| CN102364088A (en) * | 2011-11-03 | 2012-02-29 | 武汉三联水电控制设备有限公司 | Double-feedback positioning high-flow hydraulic control valve and control system of turbine governor |
| US20130113128A1 (en) * | 2011-11-03 | 2013-05-09 | Linde Aktiengesellschaft | Device for bringing about a phase contact between a liquid phase and a gaseous phase, in particluar a heat and mass transfer column |
| CN103696899A (en) * | 2013-11-15 | 2014-04-02 | 陈永远 | Ultra-large type hydroelectric power plant |
| JP2016061151A (en) * | 2014-09-12 | 2016-04-25 | 株式会社東芝 | Guide vane for hydraulic machine and repairing method thereof |
| CN105022286A (en) * | 2015-07-01 | 2015-11-04 | 贵州电力试验研究院 | Test method for reaction time constant of main servomotor of water turbine generator set |
| CN108443057A (en) * | 2018-05-25 | 2018-08-24 | 云南电网有限责任公司电力科学研究院 | A kind of control method and control device of guide vanes of water turbine aperture |
Non-Patent Citations (3)
| Title |
|---|
| VIMAL PATEL等: "Influence of overlap ratio and aspect ratio on the performance of Savonius hydrokinetic turbine", 《ENERGY RESEARCH》 * |
| 史千等: "负曲率导叶在高水头混流式水轮机中的应用及性能分析", 《防爆电机》 * |
| 杨新伟: "乌江构皮滩水电站水轮机稳定性问题研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
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Inventor after: Yu Bo Inventor after: Wang Yi Inventor after: Su Ting Inventor after: Huang Zongliu Inventor before: Wang Yi Inventor before: Su Ting Inventor before: Yu Bo Inventor before: Huang Zongliu |
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