CN105048511B - A kind of electricity generation system inertia integrated control method containing controllable inertia type air generator - Google Patents
A kind of electricity generation system inertia integrated control method containing controllable inertia type air generator Download PDFInfo
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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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Abstract
The invention discloses a kind of inertia integrated control method of the electricity generation system containing controllable inertia type air generating set, including judging whether the mains frequency of grid entry point changes step, if do not changed, continue to monitor, if changed, the position of controllable inertia type air generating set grid entry point is judged, if in sending end, adjusting active increment Delta PfFor：Otherwise, active increment Delta P is adjustedfFor：Compared with conventional inertia is controlled, the present invention can according to residing for wind power plant region geographical position, using corresponding inertia adjusting method, it has been provided simultaneously with the regulation of participation mains frequency and increase by two kinds of control functions of system damping, eliminate the adverse effect that traditional virtual inertia control introduces negative damping in frequency modulation.The ability of the inertia size of sub-district domain system where interconnected network can flexibly change it by wind power plant, enhancing inertial supports and power oscillation damping, improves the dynamic stability of system.
Description
Technical field
The present invention relates to a kind of control method of electricity generation system, especially a kind of hair containing controllable inertia type air generating set
Electric system inertia integrated control method, belongs to electricity generation system control technology field.
Background technology
In Future New Energy Source installs the higher electricity generation system of proportion, the virtual inertia that many power supplys possess, which will turn into, maintains system
The customized parameter of system dynamic stability, although add the difficulty of analysis grid stability, but control method also can be more flexible.
By taking variable-speed wind-power unit as an example, by independent active regulation, unit can fictionalize controllable inertial response, be prevented effectively from weakening
System inertia, the stable adverse effect of threat frequency.However, variable-speed wind-power machine different from the built-in inertia of conventional power generation usage unit
Group can be in the range of wider rotational speed regulation by discharging or absorbing rotor kinetic energy, and the flexible in size of its virtual inertia is adjustable, enters
And inertia size and the distribution of system can be changed, system frequency adjustment is faced many new problems.And multimachine inertia is controllable also can
Frequency and attenuation characteristic oscillation of power regional power grid make a significant impact.After inertia this control parameter is added,
How virtual inertia is utilized, improve frequency stabilization, will be control even with dynamic characteristics such as inertia regulation strengthening system dampings
Can method have more actual application value, and then improve the another key issue of controllable inertia generating system safety operation level.
The content of the invention
The technical problem to be solved in the present invention is：A kind of the used of electricity generation system containing controllable inertia type air generating set is provided
Property integrated control method.
The technical solution used in the present invention is：
A kind of inertia integrated control method of the electricity generation system containing controllable inertia type air generating set, comprises the following steps：
Step a：Judge whether the mains frequency of the controllable inertia type air generating set grid entry point changes, if
It is to turn to step b；If not, turning to step a；
Step b：Judge the position of controllable inertia type air generating set grid entry point described in the electricity generation system, sent if being in
Electric end, then turn to step c, otherwise turns to step d；
Step c：Adjust the power output of the controllable inertia type air generating set, active increment Delta PfFor：
In formula, TH、TLFor the first and second derivative control coefficients, and TH>TL>0；Δ f is mains frequency deviation, d Δs f/dt
Rate of change for the mains frequency deviation relative to time t；
Step d：Adjust the power output of the controllable inertia type air generating set, active increment Delta PfFor：
In formula, TvirFor the 3rd derivative control coefficient.
The beneficial effects of the invention are as follows：
With conventional inertia control compared with, strategy of the present invention can according to residing for controllable inertia type air generating set region ground
Position is managed, using corresponding inertia adjusting method, makes it be provided simultaneously with participating in mains frequency regulation and two kinds of system damping of increase
Control function, eliminates the adverse effect that traditional virtual inertia control introduces negative damping in frequency modulation.Under this control strategy, mutually
The inertia size of sub-district domain system, strengthens inertia branch where connection power network can flexibly change it by controllable inertia type air generating set
Support and the ability of power oscillation damping, improve the dynamic stability of system.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the flow chart of the present invention；
Fig. 2 is the district system of the four machine two emulation topology diagram containing wind power plant in the embodiment of the present invention 1；
Fig. 3 is wind-driven generator virtual inertia control structure figure in the embodiment of the present invention 1；
Fig. 4 is the district system frequency dynamic of four machine two response correlation curve in the embodiment of the present invention 1；
Fig. 5 is the district system power dynamic response correlation curve of four machine two in the embodiment of the present invention 1；
Fig. 6 is to contain the controllable regional generation system construction drawing of inertia two in the embodiment of the present invention 1；
Fig. 7 is to contain the controllable regional generation system equivalent circuit diagram of inertia two in the embodiment of the present invention 1；
Δ f oscillating characteristic when Fig. 8 is two regional generation system undamped in the embodiment of the present invention 1；
Fig. 9 is the district system frequency dynamic of four machine two response correlation curve in the embodiment of the present invention 2；
Figure 10 is the district system power dynamic response correlation curve of four machine two in the embodiment of the present invention 2.
Embodiment
Embodiment 1：
As shown in Fig. 2 the present embodiment uses the district system of tetra- machines of IEEE two, the system includes 4 thermal power plants, rated capacity
It is 900MWA, and 1 capacity is 250 × 2WM double-fed fan motor.Wherein, thermal power plant G1、G2Region 1 is constituted, to send
Electric end；G3、G4Region 2 is then constituted, is receiving end.L1And L2The respectively load in region 1 and region 2.In embodiment hereof 1,
Wind power plant DFIG is through bus B5It is incorporated to region 1；And in example 2, wind power plant DFIG in region 1 is changed by bus B11It is incorporated to area
Domain 2, as shown in phantom in FIG..Wherein, wind power plant is by double-fed induction Wind turbines (doubly fed induction
Generator, DFIG) constitute, its virtual inertia control structure is as shown in Figure 3.Wind speed setting is 11m/s in emulation, by setting
Following two control programs are put, illustrate that the present invention can be such that the controllable electricity generation system of inertia is adjusted by flexible inertia, system is improved
The ability of system inertial supports and power oscillation damping.
Scheme is 1.：Noninertia is controlled；
Scheme is 2.：First derivative control coefficient TH=20, the second derivative control coefficient TL=4.
As shown in figure 4, load L1The 200MW that uprushed at the 2.0s moment makes system frequency occur significantly falling.Without additional used
Property control when, after sudden load increase, fluctuating by a relatively large margin occurs in system frequency；After the present embodiment, controllable inertia Wind turbines
By the size of dynamic regulation virtual inertia, amplitude that system frequency is fallen and rate of change is set to be significantly decreased, frequency is most
Large deviation is decreased to 0.13Hz by 0.2Hz.
As shown in figure 5, bus B8At the 2.0s moment, occurs the three phase short circuit fault that the duration is 0.1s.Without additional used
Property control when, short trouble causes systems stay oscillation of power；After the present embodiment, sent out by dynamic regulation sending end
The inertia of electric system, effectively enhances the ability of system damping oscillation of power.As illustrated, failure occur after interacted system work(
Rate vibration only lasts about 10s and recovered to steady operational status.
The present embodiment principle analysis is as follows：
By each controllable inertia type air generating set in region in the district system of tetra- machines of IEEE two and conventional power generation usage unit each etc.
Imitate as two Synchronous generator G1、G2, then the controllable inertia generating system in two regions and its equivalent circuit as shown in Figure 6 and Figure 7,
Synchronous generator G in figure1Positioned at sending end, G2Positioned at receiving end, its equivalent inertia time constant is respectively TG1、TG2.The system
Conventional power unit in two regional power grids and a wind-powered electricity generation group of planes are carried out according to the respective center of inertia equivalent, it is adaptable to which qualitative analysis is interconnected
Oscillation of power characteristic between system realm.
As shown in fig. 7, Z1And Z2Respectively generator G1、G2To bus B4Impedance, ZLFor load impedance.If generator
G1、G2Transient potential E1'、E2' constant, then its equation of rotor motion is
In formula, k is equivalent synchronous generator group #, and value is 1 or 2；PGk、PTk、Dk、δk、ωk、ω0Respectively kth etc.
Imitate electromagnetic power, mechanical output, damped coefficient, generator rotor angle, angular speed and the rated angular velocity of Synchronous generator.
Star network shown in Fig. 7 is transformed into triangular net, load bus is eliminated, synchronous generator G can be tried to achieve1And G2
Electromagnetic power expression formula it is as follows：
In formula, δ12=δ1-δ2For G1With G2Between generator rotor angle it is poor；Wherein
Formula (4) substitution formula (3) is linearized, two machine systems are obtained with Δ δ12、Δω1With Δ ω2For state variable
System linear state equation is
Wherein
It is rewritten as matrix form：
Formula (8) is the state equation of three ranks, it is difficult to direct influence of the qualitative analytic systems inertia to oscillation of power, because
This needs to carry out depression of order processing to model.Therefore, herein by integral manifold method, by state variable Δ ω2Corresponding is micro-
Point equation is represented with a rational integral manifold, so that simplification mathematical modeling, and this method can guarantee that depression of order before and after system it is steady
It is qualitative constant.
Take singular perturbation parameter ε=TG2/(mTG1), wherein, m>2, formula (7) both sides are multiplied by ε together and obtained
If integral manifold
Δω2=h (Δ δ12,Δω1,ε) (10)
When m values meet ε fully it is small when, formula (10) can expand into power series at ε=0
Δω2=h=h0+εh1+ε2h2+… (11)
Function h must meet formula (9), then
Wherein
Formula (12) left and right sides is on ε0, ε1, ε2... each term coefficient should be equal, can obtain
Formula (13) is substituted into formula (11), state variable Δ ω is obtained2For
Understood according to formula (14), pass through the method for integral manifold, state variable Δ ω2Can approximate representation be Δ δ12、Δω1
Function, formula (14) is substituted into formula (5)
The state equation depression of order of system be formula (6), (15), i.e.,
The characteristic equation of equation (16) is represented by
In formula, p is differential operator.
The formulation character root is asked to be by formula (17)
P=λ ± j ω (18)
Wherein
Because λ has reacted the damping characteristic of system, and λ absolute values are bigger, and the damping capacity vibrated to system power is stronger.
It can be obtained and such as drawn a conclusion by (19)：
1) in above-mentioned two machines electricity generation system, power transmission end system G is increased1Inertia TG1, system damping will reduction, even wind-powered electricity generation
The regional power grid is accessed, although larger virtual inertia can improve frequency dynamic stabilization, is unfavorable for damping system power and shakes
Swing；
2) increase receiving end system G2Inertia TG2, system damping is strengthened, i.e., in the regional power grid, Wind turbines
Virtually inertia control has improves frequency dynamic stabilization and two kinds of control functions of system damping simultaneously, more effectively improves hair
The stability of electric system.
As the above analysis, in system frequency change procedure, the larger inertia of receiving end can effective strengthening system
Dynamic stability；And in sending end, while wind power plant provides inertia support, but reduce system damping, easily induce low frequency
Vibration, is restricted the application of conventional inertia control program.For this problem, propose that the Dynamic Inertia of variable-speed wind-power unit is comprehensive
Control technology is closed, the control technology is adjusted by flexible inertia, wind power plant is still had inertia and resistance concurrently even at sending end
Buddhist nun's double control function.
Two regional generation system Δ f oscillating characteristic when Fig. 8 show undamped, by being carried out to Δ f and its rate of change
Conversion, can be by its point of four-stage using θ as signal is judged.
According to θ judgement signal, the Dynamic Inertia control of the controllable inertia type air generating set of sending end can be described as follows：
If 1) θ>0, show that 1., 3. Δ f is in oscillation phase, amplitude gradually increases, and now larger system inertia is helped
The increase of oscillation amplitude can effectively be suppressed by possessing larger virtual inertia in reduction oscillation amplitude, i.e. Wind turbines.
If 2) θ<0, show that 2., 4. Δ f is in oscillation phase, Δ f will be gradually decrease to 0 by peak swing, now smaller
System inertia can speed up the reduction of oscillation amplitude, i.e. Wind turbines and should reduce virtual inertia in the stage, accelerate vibration width
Value decay.
To sum up, the Dynamic Inertia integrated control strategy of controllable inertia type air generating set is by detecting signal θ, in vibration rank
Section 1. and 3. in, larger parameter T is setH, and the stage 2. and 4. in, control parameter is reduced to TL, you can realize and suppress system
The control targe for oscillation of power of uniting, control program is shown in Table 1.
Table 1
Embodiment 2：
It is with the difference of embodiment 1, controllable inertia type air generating set is changed to receiving end in embodiment 2, by
Bus B11Region 2 is incorporated to, as shown in phantom in Figure 2.Wind speed setting is 11m/s in emulation, sets control program 3., the 3rd differential
Control coefrficient Tvir=20.
As shown in figure 9, load L1The 200MW that uprushed at the 2.0s moment makes system frequency occur significantly falling.Without additional used
Property control when, after sudden load increase, fluctuating by a relatively large margin occurs in system frequency；After the present embodiment, controllable inertia Wind turbines
The larger and constant inertia fictionalized using it so that the amplitude and rate of change that system frequency is fallen are significantly decreased,
There is same frequency modulation effect compared with Example 1.
As shown in Figure 10, bus B8At the 2.0s moment, occurs the three phase short circuit fault that the duration is 0.1s.Without additional used
Property control when, short trouble causes systems stay oscillation of power；After the present embodiment, according to the analysis in embodiment 1
Understand, Wind turbines fictionalize larger inertia using it, you can the interregional damping of power oscillation of increase, accelerate vibration to decline
Subtract.
Above-described embodiment is only used for illustrating the present invention, rather than the restriction to rights protection of the present invention, every in this hair
The change of any unsubstantiality carried out on the basis of bright essential scheme, all should fall within the scope of protection of the present invention.
Claims (1)
1. a kind of inertia integrated control method of the electricity generation system containing controllable inertia type air generating set, it is characterised in that：Including
Following steps：
Step a：Judge whether the mains frequency of the controllable inertia type air generating set grid entry point changes, if it is, turning
To step b；If not, turning to step a；
Step b：The position of controllable inertia type air generating set grid entry point described in the electricity generation system is judged, if in power transmission
End, then turn to step c, otherwise turns to step d；
Step c：Adjust the power output of the controllable inertia type air generating set, active increment Delta PfFor：
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In formula, TH、TLRespectively the first and second derivative control coefficients, and TH>TL>0；Δ f is mains frequency deviation, d Δs f/dt
Rate of change for mains frequency deviation relative to time t；
Step d：Adjust the power output of the controllable inertia type air generating set, active increment Delta PfFor：
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</mrow>
In formula, TvirFor the 3rd derivative control coefficient.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058922B (en) * | 2016-06-14 | 2019-05-31 | 华北电力大学 | A kind of the double-fed fan motor unit depression of order analogue system and method for the control containing virtual inertia |
| CN106230021B (en) * | 2016-08-16 | 2018-12-04 | 华北电力大学（保定） | The transient rotor angle stability control method of regional internet power grid containing controllable inertia wind-powered electricity generation |
| CN111022254B (en) * | 2019-12-25 | 2021-02-26 | 金陵科技学院 | Time-lag control method for tracking maximum power point of singular perturbation wind power generation model |
| CN111224411B (en) * | 2020-04-24 | 2020-08-11 | 中国电力科学研究院有限公司 | Inertial parameter determination method and device of inertia compensation equipment in power system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006262583A (en) * | 2005-03-16 | 2006-09-28 | Institute Of National Colleges Of Technology Japan | Control device for reducing output fluctuation, and control method for wind power generator in variable speed range therefor |
| CN102594244A (en) * | 2012-02-20 | 2012-07-18 | 江苏省电力试验研究院有限公司 | Joint control method of primary frequency modulation for doubly-fed wind power generation set |
| CN102611132A (en) * | 2012-02-27 | 2012-07-25 | 山东大学 | Method for adjusting parameters of additional frequency controller of double-fed variable-speed wind turbine generator |
-
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- 2015-06-26 CN CN201510362411.XA patent/CN105048511B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006262583A (en) * | 2005-03-16 | 2006-09-28 | Institute Of National Colleges Of Technology Japan | Control device for reducing output fluctuation, and control method for wind power generator in variable speed range therefor |
| CN102594244A (en) * | 2012-02-20 | 2012-07-18 | 江苏省电力试验研究院有限公司 | Joint control method of primary frequency modulation for doubly-fed wind power generation set |
| CN102611132A (en) * | 2012-02-27 | 2012-07-25 | 山东大学 | Method for adjusting parameters of additional frequency controller of double-fed variable-speed wind turbine generator |
Non-Patent Citations (2)
| Title |
|---|
| 朱晓荣等.双馈感应风力发电机组复合频率控制策略研究.《电力系统保护与控制》.2012,第40卷(第8期),第20-24、29页. * |
| 郝正航.双馈风电机组的暂态行为及其对电力系统稳定性影响.《中国博士学位论文全文数据库 工程科技Ⅱ辑（月刊）》.2012,(第5期), * |
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