CN105089946B - The acquisition methods of wind turbine generator drive system rotary inertia - Google Patents
The acquisition methods of wind turbine generator drive system rotary inertia Download PDFInfo
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- CN105089946B CN105089946B CN201510279161.3A CN201510279161A CN105089946B CN 105089946 B CN105089946 B CN 105089946B CN 201510279161 A CN201510279161 A CN 201510279161A CN 105089946 B CN105089946 B CN 105089946B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The present invention relates to a kind of acquisition methods of wind turbine generator drive system rotary inertia, comprise the following steps：The initial reference value mechanical characteristic equation of rotational inertia of transmission system is set, wherein：For generating unit speed,For disturbance term,For gear-box no-load voltage ratio,For generator electromagnetic torque；To disturbance termIt is observed, observed result is expressed as；Step 4, disturbance term is detectedObserved resultMiddle frequency isComponent amplitude, and be designated as；In generator electromagnetic torque TeIt is middle addition frequency beSinusoidal signal,For amplitude；Detection adds observed result after sinusoidal signal in electromagnetic torqueMiddle frequency isComponent amplitude, and be designated as；And calculate transmission system mechanical rotation inertia。
Description
Technical field
The present invention relates to a kind of acquisition methods of rotational inertia of transmission system, more particularly to a kind of wind turbine generator drive system
The acquisition methods of rotary inertia.
Background technology
The safe and reliable operation of Wind turbines depends on good speed Control and pitch control, and generating unit speed controller
It is whether good and bad with variable-speed controller control performance, it is heavily dependent on the accurate journey of set drive system rotary inertia
Degree；Estimation to unit rotation function simultaneously, also relies on the degree of accuracy of turbine generator inertia.
However, due to Wind turbines huge structure, wind speed has randomness, causes the pneumatic torque of unit to be difficult to keep permanent
It is fixed, therefore conventional method can not be used（Such as three-line pendulum mensuration, rock mensuration）Wind turbine generator drive system is rotated
Inertia carries out actual measurement.
The content of the invention
In summary, it can effectively solve the problem that Wind turbines rotary inertia can not carry out actual measurement it is necessory to provide one kind
The problem of.
A kind of acquisition methods of wind turbine generator drive system rotary inertia, comprise the following steps：Transmission system is set to rotate
The initial reference value of inertia；Establish driving-chain mechanical characteristic equation, wherein：Turn for unit
Speed,For disturbance term,For gear-box no-load voltage ratio,For generator electromagnetic torque；To disturbance termIt is observed, observed result table
It is shown as；Step 4, disturbance term is detectedObserved resultMiddle frequency isComponent amplitude, and be designated as；In generator
Electromagnetic torque TeIt is middle addition frequency beSinusoidal signal,For amplitude；Detection adds in electromagnetic torque
Observed result after sinusoidal signalMiddle frequency isComponent amplitude, and be designated as；And calculate transmission system mechanical rotation
Inertia：。
Relative to prior art, the acquisition methods of wind turbine generator drive system rotary inertia provided by the invention, pass through by
Part beyond Wind turbines electromagnetic torque item regards disturbance as, and this disturbance is observed using extended state observer,
The evaluated error to rotary inertia is included in disturbance term, the sinusoidal signal of certain amplitude is added in generator electromagnetic torque, so
The intensity of variation of corresponding frequencies component amplitude in disturbance term is detected afterwards, and then can calculate unit actual rotation inertia value.
Brief description of the drawings
Fig. 1 is the flow chart of the acquisition methods of wind turbine generator drive system rotary inertia provided in an embodiment of the present invention.
Fig. 2 is disturbance observation and corresponding frequencies component amplitude detects schematic diagram in method shown in Fig. 1.
Embodiment
Further stated in detail below according to Figure of description and in conjunction with specific embodiments to technical scheme.
The present invention is further described below in conjunction with the accompanying drawings.
Also referring to Fig. 1 and Fig. 2, the acquisition side of wind turbine generator drive system rotary inertia provided in an embodiment of the present invention
Method, mainly comprise the following steps：
Step 1：The initial reference value of rotational inertia of transmission system is set。
The initial reference valueAs a basic parameter of state observer, in the convergent situation of state observer
Under, the selection of the initial value does not have an impact to last result of calculation, it is preferred that the rotational inertia of transmission system it is initial
Reference valueThe value more than 0 is chosen, it is consistent with the symbol of the rotary inertia with reality.
Step 2：Establish driving-chain mechanical characteristic equation, its
In：For generating unit speed,For pneumatic torque,For driving-chain mechanical loss,For gear-box no-load voltage ratio,For generator electromagnetism
Torque,For unit mechanical rotation inertia.
Wherein, willRegard disturbance as, be expressed as,
Then the driving-chain mechanical characteristic equation is expressed as：
。
Step 3：To disturbance termIt is observed, observed result is expressed as。
The disturbance termObserved pattern can be selected as needed, in the present embodiment, the disturbance term's
Observed pattern uses extended state observer.It is appreciated that the observed pattern of the disturbance term is only specific embodiment, as long as
Disturbance term can be obtainedValue method can, the extended state observer be intended only as obtain disturbance termValue one
Individual specific means.
Step 4：Detect disturbance termObserved resultMiddle frequency isComponent amplitude, and be designated as。
It is describedThe amplitude of component can use conventional detection techniques, to disturbance termIt is multiplied by an identical frequency
Signal is with regard to that can obtain the amplitude of corresponding frequencies signal.
Step 5：In generator electromagnetic torque TeIt is middle addition frequency beSinusoidal signal,For width
Value.
Step 6：Detection adds observed result after sinusoidal signal in electromagnetic torqueMiddle frequency isComponent amplitude,
And it is designated as。
Fig. 2 is shown in the detection of observation and corresponding frequencies component amplitude to unit disturbance.
Step 7：Calculate transmission system mechanical rotation inertia。
WhenWhen, add sinusoidal signal in generator electromagnetic torqueAfterwards, disturbance termIt will deposit
It is in amplitude, frequency isItem；
Therefore transmission system mechanical rotation inertiaFormula it is as follows：
The mechanical rotation inertia of unit can be calculated by above formula；
Step 8：Change frequency, sinusoidal signalAmplitudeWith inertia initial value, repeat above-mentioned
Step（1-7）Step, resulting rotary inertia is averaged.
The acquisition methods of wind turbine generator drive system rotary inertia provided by the invention, by by Wind turbines electromagnetic torque
Part beyond regards disturbance as, and this disturbance is observed using extended state observer, is included in disturbance term to turning
The evaluated error of dynamic inertia, the sinusoidal signal of certain amplitude is added in generator electromagnetic torque, then detects phase in disturbance term
The intensity of variation of frequency component amplitude is answered, and then unit actual rotation inertia value can be calculated.Compared with prior art, this hair
The scene extraction of bright achievable wind turbine generator drive system rotary inertia, and do not influenceed by outside wind speed, it is not required to increase cost
Input, has preferable economic benefit.
In addition, those skilled in the art can also make other changes in spirit of the invention, these are according to present invention essence certainly
The change that god is made, it should all be included in scope of the present invention.
Claims (7)
1. a kind of acquisition methods of wind turbine generator drive system rotary inertia, comprise the following steps：
Step 1, the initial reference value J of rotational inertia of transmission system is set*；
Step 2, driving-chain mechanical characteristic equation is establishedWherein：Ω is generating unit speed,To disturb
Dynamic item, n0For gear-box no-load voltage ratio, TeFor generator electromagnetic torque；
Step 3, to disturbance termIt is observed, observed result is expressed as Q1；
Step 4, disturbance term is detectedObserved result Q1Middle frequency is ω0Component amplitude, and be designated as
Step 5, in generator electromagnetic torque TeMiddle addition frequency is ω0Sinusoidal signal Δ Te=Asin (ω0T), A is amplitude；
Step 6, detect in electromagnetic torque add sinusoidal signal after observed result Q1Middle frequency is ω0Component amplitude, and remember
ForAnd
Step 7, transmission system mechanical rotation inertia J is calculated：
<mrow>
<mi>J</mi>
<mo>=</mo>
<mn>1</mn>
<mo>/</mo>
<mrow>
<mo>(</mo>
<mo>(</mo>
<mrow>
<msubsup>
<mi>Q</mi>
<msub>
<mi>&omega;</mi>
<mn>0</mn>
</msub>
<mrow>
<mo>*</mo>
<mo>*</mo>
</mrow>
</msubsup>
<mo>-</mo>
<msubsup>
<mi>Q</mi>
<msub>
<mi>&omega;</mi>
<mn>0</mn>
</msub>
<mo>*</mo>
</msubsup>
</mrow>
<mo>)</mo>
<mo>/</mo>
<msub>
<mi>n</mi>
<mn>0</mn>
</msub>
<mo>*</mo>
<mi>A</mi>
<mo>+</mo>
<mn>1</mn>
<mo>/</mo>
<msup>
<mi>J</mi>
<mo>*</mo>
</msup>
<mo>)</mo>
</mrow>
<mo>.</mo>
</mrow>
2. the acquisition methods of wind turbine generator drive system rotary inertia as claimed in claim 1, it is characterised in that the transmission
The initial reference value J of system rotary inertia*Choose the value more than 0.
3. the acquisition methods of wind turbine generator drive system rotary inertia as claimed in claim 1, it is characterised in that the disturbance
For：
<mrow>
<msubsup>
<mi>Q</mi>
<mn>1</mn>
<mo>*</mo>
</msubsup>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>T</mi>
<mi>a</mi>
</msub>
<mo>-</mo>
<msub>
<mi>T</mi>
<mrow>
<mi>l</mi>
<mi>o</mi>
<mi>s</mi>
<mi>s</mi>
</mrow>
</msub>
</mrow>
<mi>J</mi>
</mfrac>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mfrac>
<mn>1</mn>
<mi>J</mi>
</mfrac>
<mo>-</mo>
<mfrac>
<mn>1</mn>
<msup>
<mi>J</mi>
<mo>*</mo>
</msup>
</mfrac>
<mo>)</mo>
</mrow>
<mo>*</mo>
<msub>
<mi>n</mi>
<mn>0</mn>
</msub>
<mo>*</mo>
<msub>
<mi>T</mi>
<mi>e</mi>
</msub>
<mo>,</mo>
</mrow>
Wherein, TaFor pneumatic torque, TlossFor driving-chain mechanical loss.
4. the acquisition methods of wind turbine generator drive system rotary inertia as claimed in claim 1, it is characterised in that work as J*≠J
When, sinusoidal signal Δ T is added in generator electromagnetic torquee=Asin (ω0T) after, disturbance termAmplitude be present isFrequency is ω0Item.
5. the acquisition methods of wind turbine generator drive system rotary inertia as claimed in claim 4, it is characterised in that further bag
Include change frequencies omega0, sinusoidal signal Δ Te=Asin (ω0T) amplitude A and rotary inertia initial reference value J*, repeat above-mentioned step
Suddenly (1-7) step, resulting rotary inertia is averaged.
6. the acquisition methods of wind turbine generator drive system rotary inertia as claimed in claim 1, it is characterised in that to the ω0
The amplitude of component use detection techniques.
7. the acquisition methods of wind turbine generator drive system rotary inertia as claimed in claim 1, it is characterised in that to disturbance termThe signal for being multiplied by an identical frequency obtains the amplitude of corresponding frequencies signal.
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| CN201510279161.3A CN105089946B (en) | 2015-05-28 | 2015-05-28 | The acquisition methods of wind turbine generator drive system rotary inertia |
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| CN107834937A (en) * | 2017-11-09 | 2018-03-23 | 上海辛格林纳新时达电机有限公司 | Method for identification of rotational inertia and system |
| CN112922782B (en) * | 2021-02-03 | 2022-08-02 | 浙江运达风电股份有限公司 | Resistance adding method for transmission chain of wind generating set based on ADRC control |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410659A (en) * | 2013-05-03 | 2013-11-27 | 浙江大学 | Effective wind speed obtaining method of wind generating set based on High-Gain observer |
| CN104196678A (en) * | 2014-05-26 | 2014-12-10 | 沈阳工业大学 | Torsional vibration suppression control method for transmission system of wind turbine generator |
| CN104329220A (en) * | 2014-09-03 | 2015-02-04 | 上海交通大学 | Torsion load controller for restraining torsional vibration of wind turbine generator and control method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0744862B2 (en) * | 1988-02-26 | 1995-05-15 | 富士電機株式会社 | Electric motor speed controller |
| JP2009038942A (en) * | 2007-08-03 | 2009-02-19 | Yaskawa Electric Corp | Load inertia identification method and servo motor controller |
| JP4565034B2 (en) * | 2008-12-16 | 2010-10-20 | ファナック株式会社 | Control device and control system for inertia estimation |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410659A (en) * | 2013-05-03 | 2013-11-27 | 浙江大学 | Effective wind speed obtaining method of wind generating set based on High-Gain observer |
| CN104196678A (en) * | 2014-05-26 | 2014-12-10 | 沈阳工业大学 | Torsional vibration suppression control method for transmission system of wind turbine generator |
| CN104329220A (en) * | 2014-09-03 | 2015-02-04 | 上海交通大学 | Torsion load controller for restraining torsional vibration of wind turbine generator and control method |
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