CN105989206B - Wind power plant and photovoltaic plant model verification method based on fast reaction generator - Google Patents
Wind power plant and photovoltaic plant model verification method based on fast reaction generator Download PDFInfo
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- CN105989206B CN105989206B CN201510083192.1A CN201510083192A CN105989206B CN 105989206 B CN105989206 B CN 105989206B CN 201510083192 A CN201510083192 A CN 201510083192A CN 105989206 B CN105989206 B CN 105989206B
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- 238000004088 simulation Methods 0.000 abstract description 4
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The present invention relates to a kind of wind power plant based on fast reaction generator and photovoltaic plant model verification methods, comprising: obtains measurement voltage, frequency, active power and the reactive power value of wind power plant and photovoltaic electric station grid connection point；Then using measurement voltage and frequency values as the control reference value of fast reaction generator excitation and speed-regulating system, the accurate equivalence to external electrical network is realized；Then the active power and reactive power value of grid entry point are calculated by Digital Simulation, is compared with the active power of actual measurement and reactive power value, if unanimously, proving that wind power plant and photovoltaic plant model are accurate, there are errors on the contrary then explanation；And with the further contraction of actual measurement equivalent point, this method can be used for positioning the specific location of wind power plant and photovoltaic plant model error source.
Description
Technical field:
The present invention relates to electric power system models to verify field, is more particularly to a kind of wind-powered electricity generation based on fast reaction generator
Field and photovoltaic plant model verification method.
Background technique:
Scale with the new energy such as wind-powered electricity generation, photovoltaic power generation access power grid constantly increases, and the influence to power grid obtains
Extensive concern and research.The accuracy of new energy power station model is itself and the interactional key factor of power grid of research, however still
It is not solved very well.Currently, people, which generally use, to be set to obtain the model parameter of accurate generation of electricity by new energy unit and station
The method of standby on-the-spot test, and test of many times is needed, then come to be fitted trial curve constantly by adjusting model parameter.Equipment
Test will affect the normal operation of new energy power station, lead to economic loss, and such modeling verification method is often served only for managing
The one machine infinity bus system thought, in the interconnected electric power system for actual complex, long, overall model complexity that there are modeling periods
The model parameter uncertain factor of error-prone, various elements is more, can not rule out the error of actual electric network modeling is influenced, be difficult to it is fixed
It is the problems such as source of bit model error, ineffective.
In recent years, with the fast development of measuring technique, the especially continuous popularization and application of Wide Area Measurement System (WAMS),
Target synchronized phasor when having unified is provided, allows and is distributed in point everywhere in large regional grid under same time scale
It is compared, provides new approaches for Validation of Simulation Models research.How using valuable WAMS system measurement data, establish new
The non-working port characteristic model of energy power station access system excludes the influence of the error modeled to power grid, realizes to reality
The complicated quick simulation modeling verifying of interconnected electric power system, and the hybrid dynamic simulation side based on the injection of WAMS system measured data
Method, gradually reduces the range of modeling error source positioning inside new energy power station, and then completes new energy power station and its internal member
The model of part is verified, and is the problem of being worth further investigation.
Summary of the invention:
The object of the present invention is to provide a kind of wind power plants based on fast reaction generator and photovoltaic plant model authentication
Method carrys out accurate equivalent external electrical network by measured data, effectively avoids the error modeled to external network system.
To achieve the above object, the invention adopts the following technical scheme: wind power plant and light based on fast reaction generator
Overhead utility model verification method, comprising:
Measure wind power plant/photovoltaic electric station grid connection point parameter；
Fast reaction generator is established, the generator excitation and speed-regulating system model are established；
The control reference value of the system model is determined by the parameter；
Establish wind power plant and photovoltaic plant access system model；
Certain scene disturbance is simulated in the wind power plant and photovoltaic plant access system model, is obtained described under the disturbance
The active power and reactive power value of wind power plant and photovoltaic electric station grid connection point；
Determine the active power and the respective departure of reactive power value of the active power and reactive power value and actual measurement；
The accuracy of the wind power plant and photovoltaic plant access system model is judged by the departure；
If the wind power plant and photovoltaic plant access system model inaccuracy, further shrink actual measurement equivalent point, positioning
Error source.
A kind of wind power plant and photovoltaic plant model verification method based on fast reaction generator provided by the invention, by wind
The voltage and frequency value parameter that electric field and photovoltaic electric station grid connection point measure are input to the generator excitation and speed-regulating system mould
In type, reference value is controlled as it.
A kind of wind power plant and photovoltaic plant model verification method based on fast reaction generator provided by the invention, in wind
In electric field and photovoltaic plant access system model, grid entry point is replaced with outer portion with fast reaction generator.
Another preferred a kind of wind power plant and photovoltaic plant model based on fast reaction generator provided by the invention is tested
Card method is established if the absolute value of the deviation is less than the 5% of corresponding actual measurement active power and reactive power value
The wind power plant and photovoltaic plant access system model be accurate；If the departure absolute value is greater than corresponding reality
The 5% of active power and reactive power value is surveyed, then the wind power plant and photovoltaic plant access system model established are inaccuracy
's.
Another preferably a kind of wind power plant and photovoltaic plant model based on fast reaction generator provided by the invention is tested
Card method, will be external according to live actual measurement if the wind power plant of the foundation and photovoltaic plant access system model inaccuracy
Network equivalence point is shunk, and replaces the electric network model other than new equivalent point with fast reaction generator, at position error source.
Another preferred a kind of wind power plant and photovoltaic plant model based on fast reaction generator provided by the invention is tested
Card method, the scene disturbance include that short trouble disturbs.
Another preferred a kind of wind power plant and photovoltaic plant model based on fast reaction generator provided by the invention is tested
Card method, the wind power plant and photovoltaic plant access system model include wind power plant and photovoltaic plant, step-up transformer, route,
Step-down transformer and load.
Another preferred a kind of wind power plant and photovoltaic plant model based on fast reaction generator provided by the invention is tested
Card method, the parameter include voltage, frequency, active power and reactive power value.
Another preferred a kind of wind power plant and photovoltaic plant model based on fast reaction generator provided by the invention is tested
Card method, the wind farm grid-connected point includes wind power plant booster stations high-voltage side bus or node；If the photovoltaic plant has boosting
It stands, the photovoltaic electric station grid connection point includes booster stations high-voltage side bus or node；If photovoltaic plant is without booster stations, the photovoltaic electric
Grid entry point of standing includes the output aggregation point of photovoltaic plant.
It is compared with the immediate prior art, the technical scheme provide by that invention has the following excellent effect:
1, technical solution provided by the invention carrys out accurate equivalent external electrical network by measured data, effectively avoids to external electrical
The error of net system modelling；
2, technical solution provided by the invention uses voltage magnitude and frequency amplitude measured data, obtains difficulty and compares voltage
Phase angle is small, and is generally also able to satisfy the requirement of data simultaneity；
3, technical solution provided by the invention is equally applicable to not install the occasion of phasor measuring set (PMU)；
4, technical solution provided by the invention reduces the influence operated normally to power station, reduces economic loss；
5, technical solution provided by the invention has versatility, is easy the standard of expanded application to each component models of electric system
True property verifying and error location problem, have a extensive future；
6, technical solution provided by the invention is by the excitation and governor system control reference value of control generator come equivalent
External electrical network, clear physics conception is easy to be easy-to-use, slaps convenient for the power industry engineer of different knowledge hierarchies and researcher
It holds and uses.
Detailed description of the invention
Fig. 1 is wind power plant of the invention/photovoltaic plant access system example structural schematic diagram；
Fig. 2 is the wind power plant and photovoltaic plant access system of the invention using fast reaction generator equivalence external electrical network
Structure chart；
Fig. 3 is the excitation system model schematic of fast reaction generator of the invention；
Fig. 4 is the speed-regulating system model schematic of fast reaction generator of the invention；
Fig. 5 is wind power plant/photovoltaic electric station grid connection point voltage magnitude of actual measurement of the invention and wind power plant/light that emulation obtains
The comparison diagram of overhead utility grid entry point voltage magnitude；
Fig. 6 is wind power plant/photovoltaic electric station grid connection dot frequency amplitude of actual measurement of the invention and wind power plant/light that emulation obtains
The comparison diagram of overhead utility grid entry point frequency amplitude.
Specific embodiment
Below with reference to embodiment, the invention will be described in further detail.
Embodiment 1:
As shown in figures 1 to 6, a kind of wind power plant and photovoltaic plant based on fast reaction generator that the invention of this example provides
Model verification method, comprising the following steps:
Step 1: measurement wind power plant/photovoltaic electric station grid connection point voltage, frequency, active power and reactive power value；
Step 2: establishing fast reaction generator and its excitation and speed-regulating system model；
Step 3: wind power plant/photovoltaic electric station grid connection point measurement voltage and frequency values are input to fast reaction generator excitation
In speed-regulating system model, reference value is controlled as it；
Step 4: establishing wind power plant/photovoltaic plant access system model, wherein grid entry point is sent out with outer portion with fast reaction
Motor replaces；
Step 5: simulating certain scene disturbance in power system digital simulation analysis software, obtain wind-powered electricity generation under the disturbance
The active power and reactive power value of field/photovoltaic electric station grid connection point；
Step 6: wind power plant/photovoltaic electric station grid connection point active power and reactive power value that step 5 obtains are subtracted into actual measurement
Active power and reactive power value, obtain departure；
Step 7: the size for the departure that discriminating step 6 obtains, if its absolute value is less than actual measurement active power and idle function
The 5% of rate value, then it is assumed that the wind power plant established in power system digital simulation software/photovoltaic plant model is accurate；If
Departure absolute value is greater than the 5% of actual measurement active power and reactive power value, then it is assumed that in power system digital simulation software
The wind power plant of foundation/photovoltaic plant model is inaccurate；
Step 8:, can be according to scene if the conclusion that step 7 obtains is established wind power plant/photovoltaic plant model inaccuracy
Actual measurement situation further shrinks external electrical network equivalent point, is replaced other than new equivalent point with fast reaction generator
Electric network model, and repeat step 5-7, then it can be at position error source.
In the step 1, wind power plant booster stations high-voltage side bus or node are referred to for wind farm grid-connected point；For photovoltaic electric
Grid entry point of standing refers to booster stations high-voltage side bus or node if photovoltaic plant has booster stations, if photovoltaic plant refers to light without booster stations
The output aggregation point of overhead utility.It for the measurement data of acquisition, needs to handle it, treatment measures include filtering, data
Interval and system emulation step-length unification etc..
Classical 2 ranks or 3 rank synchro generator models can be used in fast reaction generator model in the step 2, encourage
The naive model in country/international standard can be used in magnetic and speed-regulating system model, by the time that excitation and speed-regulating system is arranged
Constant is sufficiently small, comes so that synchronous generator has quick control characteristic.
In the step 3, by wind power plant/photovoltaic electric station grid connection point measurement voltage and frequency values input excitation and investigation model
In, it can be arranged according to the different function of simulation software, by reading a series of side such as file containing measurement voltages and frequency values
Method is realized.
Wind power plant/photovoltaic plant access system model generally comprises wind power plant/photovoltaic plant in the step 4, boosting becomes
Depressor, route, step-down transformer, load etc., can be in the country such as DIgSILENT PowerFactory, PSS/E, PSASP, BPA
It is established in common power system digital simulation analysis software outside.
Scene disturbance generally should be including short trouble etc. compared with large disturbances in the step 5.When system emulation, trend distribution
Original state should be adjusted, so that consistent with field measurement operating condition pre-fault status.
It, can be according to the abundant degree of live actual measurement data, by constantly by external electrical network equivalent point in the step 8
It shrinks, repeats step 5-7 wind power plant/photovoltaic plant model error source is accurately positioned.
Wherein, the correlated variables meaning of Fig. 4 and Fig. 5 are as follows: Vt0_measured: the wind power plant of actual measurement/photovoltaic electric station grid connection point electricity
Pressure amplitude value, Vt: wind power plant/photovoltaic electric station grid connection point voltage magnitude, E in emulationfd: excitation voltage value, Efd0: excitation voltage
Original steady state value, Vs: the output valve of power system stabilizer, PSS (PSS), omega: the per unit value of generator speed, F0_measured: hair
The per unit value of motor practical frequency value, cosr: power factor, Sr: apparent energy, pt: mechanical output.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field is although should be understood with reference to the above embodiments: still can be to a specific embodiment of the invention
It is modified or replaced equivalently, these are without departing from any modification of spirit and scope of the invention or equivalent replacement, in Shen
Within claims of the invention that please be pending.
Claims (7)
1. wind power plant or photovoltaic plant model verification method based on fast reaction generator, it is characterised in that: include:
Measure wind power plant/photovoltaic electric station grid connection point parameter；
Establish fast reaction generator and the fast reaction generator excitation and speed-regulating system model；
The control reference value of the system model is determined by the parameter；
Wind power plant or photovoltaic plant access system model are established, wherein grid entry point is replaced with outer portion with fast reaction generator；
Certain scene disturbance is simulated in the wind power plant or photovoltaic plant access system model, obtains the wind-powered electricity generation under the disturbance
The active power and reactive power value of field or photovoltaic electric station grid connection point；
Determine the active power and the respective departure of reactive power value of the active power and reactive power value and actual measurement；
The accuracy of the wind power plant or photovoltaic plant access system model is judged by the departure；If the deviation
Absolute value is less than the 5% of corresponding actual measurement active power and reactive power value, the then wind power plant or photovoltaic electric established
Access system of standing model is accurate；If the departure absolute value is greater than corresponding actual measurement active power and reactive power
The 5% of value, then the wind power plant or photovoltaic plant access system model established are inaccurate；
If the wind power plant or photovoltaic plant access system model inaccuracy, further shrink actual measurement equivalent point, position error
Source.
2. wind power plant or photovoltaic plant model verification method as described in claim 1 based on fast reaction generator, special
Sign is: by voltage and frequency value parameter that wind power plant or photovoltaic electric station grid connection point measure be input to the generator excitation and
In speed-regulating system model, reference value is controlled as it.
3. wind power plant or photovoltaic plant model verification method as described in claim 1 based on fast reaction generator, special
Sign is:, will be external according to live actual measurement if the wind power plant of the foundation or photovoltaic plant access system model inaccuracy
Network equivalence point is shunk, and replaces the electric network model other than new equivalent point with fast reaction generator, at position error source.
4. wind power plant or photovoltaic plant model verification method as described in claim 1 based on fast reaction generator, special
Sign is: the scene disturbance includes that short trouble disturbs.
5. the wind power plant or photovoltaic plant model verification method as claimed in claim 1 or 3 based on fast reaction generator,
Be characterized in that: the wind power plant or photovoltaic plant access system model include wind power plant or photovoltaic plant, step-up transformer, line
Road, step-down transformer and load.
6. wind power plant or photovoltaic plant model verification method as described in claim 1 based on fast reaction generator, special
Sign is: the parameter includes voltage, frequency, active power and reactive power value.
7. wind power plant or photovoltaic plant model verification method as described in claim 1 based on fast reaction generator, special
Sign is: the wind farm grid-connected point includes wind power plant booster stations high-voltage side bus or node；If the photovoltaic plant has boosting
It stands, the photovoltaic electric station grid connection point includes booster stations high-voltage side bus or node；If photovoltaic plant is without booster stations, the photovoltaic electric
Grid entry point of standing includes the output aggregation point of photovoltaic plant.
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| CN107069808A (en) * | 2017-03-28 | 2017-08-18 | 中国电力科学研究院 | A kind of new energy power station model error localization method and device |
| CN108964122B (en) * | 2018-07-16 | 2021-01-15 | 中国电力科学研究院有限公司 | Verification method and device for frequency response characteristic of wind turbine generator electrical model |
| CN111064234B (en) * | 2020-03-02 | 2022-05-31 | 张家口安智科为新能源有限公司 | Primary frequency modulation control method and system for new energy power station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013143009A (en) * | 2012-01-11 | 2013-07-22 | Hitachi Ltd | Equipment state monitoring method and device using the same |
| CN103887815A (en) * | 2014-02-21 | 2014-06-25 | 华南理工大学 | Wind power plant parameter identification and dynamic equivalence method based on operation data |
| CN104242336A (en) * | 2014-07-14 | 2014-12-24 | 国家电网公司 | New energy power station equivalent modeling method based on interaction coefficient of power generating units |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013143009A (en) * | 2012-01-11 | 2013-07-22 | Hitachi Ltd | Equipment state monitoring method and device using the same |
| CN103887815A (en) * | 2014-02-21 | 2014-06-25 | 华南理工大学 | Wind power plant parameter identification and dynamic equivalence method based on operation data |
| CN104242336A (en) * | 2014-07-14 | 2014-12-24 | 国家电网公司 | New energy power station equivalent modeling method based on interaction coefficient of power generating units |
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