CN105989206A - Wind power plant/photovoltaic power station model verification method based on quick response generator - Google Patents

Wind power plant/photovoltaic power station model verification method based on quick response generator Download PDF

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Publication number
CN105989206A
CN105989206A CN201510083192.1A CN201510083192A CN105989206A CN 105989206 A CN105989206 A CN 105989206A CN 201510083192 A CN201510083192 A CN 201510083192A CN 105989206 A CN105989206 A CN 105989206A
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China
Prior art keywords
wind energy
energy turbine
photovoltaic plant
photovoltaic
electromotor
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CN201510083192.1A
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Chinese (zh)
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CN105989206B (en
Inventor
赵大伟
马进
朱凌志
张磊
刘艳章
韩华玲
陈宁
姜达军
曲立楠
钱敏慧
葛路明
王湘艳
赵亮
于若英
施涛
罗芳
江星星
彭佩佩
居蓉蓉
胡东平
孙檬檬
何洁琼
孙树敏
程艳
李广磊
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
State Grid Shandong Electric Power Co Ltd
North China Electric Power University
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
State Grid Shandong Electric Power Co Ltd
North China Electric Power University
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Publication of CN105989206A publication Critical patent/CN105989206A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation

Abstract

The invention relates to a wind power plant/photovoltaic power station model verification method based on a quick response generator. The method comprises the following steps: acquiring a measured voltage value, a measured frequency value, a measured active power value and a measured reactive power value at a wind power plant/photovoltaic power station grid-connection point; realizing accurate equivalence of an external power grid by taking the measured voltage value and the measured frequency value as control reference values of an excitation and speed regulation system of the quick response generator; and acquiring an active power value and a reactive power value at the grid-connection point through digital simulation computing, comparing the acquired active power value and reactive power value with the measured active power value and reactive power value, proving that a wind power plant/photovoltaic power station model is accurate if the acquired active power value and reactive power value are consistent with the measured active power value and reactive power value, otherwise indicating an error. Along with further contraction of a measured equivalent point, the method can be used for positioning the specific position of an error source of the wind power plant/photovoltaic power station model.

Description

Wind energy turbine set based on fast reaction electromotor and photovoltaic plant model verification method
Technical field:
The present invention relates to electric power system model checking field, be more particularly to a kind of based on fast reaction generating The wind energy turbine set of machine and photovoltaic plant model verification method.
Background technology:
Along with the scale of the new forms of energy such as wind-powered electricity generation, photovoltaic generation access electrical network constantly increases, its shadow to electrical network Ring and get the attention and study.The accuracy of new energy power station model is to study itself and the mutual shadow of electrical network The key factor rung, but solved the most very well.At present, for obtaining generation of electricity by new energy list accurately Unit and the model parameter of station, the method for people's commonly used device context test, and need repeatedly to try Test, then by adjusting the next continuous matching trial curve of model parameter.Equipment test can affect new forms of energy electricity That stands is properly functioning, causes economic loss, and such modeling verification method is often served only for preferable list , when for the interconnected electric power system of actual complex, there is modeling period length, entirety in machine Infinite bus system Model complexity is error-prone, the model parameter uncertain factor of various element is many, can not get rid of actual electric network The error of modeling affects, is difficult to the problems such as the source of location model error, poor effect.
In recent years, along with the fast development of the technology of measurement, particularly WAMS (WAMS) is no Disconnected popularization and application, it is provided that target synchronized phasor when having unified so that be distributed in everywhere in large regional grid Point can compare under same time scale, for Validation of Simulation Models research provide new approaches. How to utilize the WAMS system measurement data of preciousness, set up the fault end of new energy power station access system Mouth characteristic model, gets rid of the impact of the error being modeled electrical network, it is achieved to actual complex interconnecting electric power The quick simulation modeling of system is verified, and the mixing injected based on WAMS system measured data is dynamically imitated True method, progressively reduces the internal modeling error of new energy power station and carrys out the scope of source location, and then complete new energy Power station, source and the modelling verification of inner member thereof, be the problem being worth further investigation.
Summary of the invention:
It is an object of the invention to provide a kind of wind energy turbine set based on fast reaction electromotor and photovoltaic plant mould Type verification method, relies on measured data to carry out the most equivalent external electrical network, is prevented effectively from outside network system The error of modeling.
For achieving the above object, the present invention is by the following technical solutions: wind based on fast reaction electromotor Electric field and photovoltaic plant model verification method, including:
Measure the parameter of wind energy turbine set/photovoltaic electric station grid connection point;
Set up fast reaction electromotor, set up described generator excitation and governing system model;
Control reference value by system model described in described parameter determination;
Set up wind energy turbine set and photovoltaic plant access system model;
In described wind energy turbine set and photovoltaic plant access system model, simulate certain on-the-spot disturbance, obtain this and disturb Described wind energy turbine set and the active power of photovoltaic electric station grid connection point and reactive power value under Dong;
Determine that described active power and reactive power value are respective with the active power of actual measurement and reactive power value Departure;
Described wind energy turbine set and the accuracy of photovoltaic plant access system model is judged by described departure;
If described wind energy turbine set and photovoltaic plant access system model are inaccurate, then shrink actual measurement equivalence further Point, position error is originated.
A kind of based on fast reaction electromotor the wind energy turbine set of present invention offer and photovoltaic plant modelling verification Method, by wind energy turbine set and photovoltaic electric station grid connection point measurement to voltage and frequency values parameter be input to described sending out In motor excitation and governing system model, control reference value as it.
A kind of based on fast reaction electromotor the wind energy turbine set of present invention offer and photovoltaic plant modelling verification side Method, in wind energy turbine set and photovoltaic plant access system model, beyond itself and site, part fast reaction is sent out Motor replaces.
Another a kind of wind energy turbine set based on fast reaction electromotor and photovoltaic electric that the present invention provides Stand model verification method, if the absolute value of described deviation value is less than each self-corresponding actual measurement active power and nothing The 5% of merit performance number, the then described wind energy turbine set set up and photovoltaic plant access system model are accurately; If described departure absolute value is more than each self-corresponding actual measurement active power and the 5% of reactive power value, then Described wind energy turbine set and the photovoltaic plant access system model set up are inaccurate.
A kind of another wind energy turbine set based on fast reaction electromotor of present invention offer and photovoltaic plant Model verification method, if the wind energy turbine set of described foundation and photovoltaic plant access system model are inaccurate, according to On-the-spot actual measurement, shrinks external electrical network equivalent point, replaces new equivalent point with fast reaction electromotor Electric network model in addition, at position error source.
Another a kind of based on fast reaction electromotor the wind energy turbine set of present invention offer and photovoltaic electric Standing model verification method, described on-the-spot disturbance includes short trouble disturbance.
Another a kind of based on fast reaction electromotor the wind energy turbine set of present invention offer and photovoltaic plant Model verification method, described wind energy turbine set and photovoltaic plant access system model include wind energy turbine set and photovoltaic electric Stand, booster transformer, circuit, step-down transformer and load.
Another a kind of based on fast reaction electromotor the wind energy turbine set of present invention offer and photovoltaic electric Standing model verification method, described parameter includes voltage, frequency, active power and reactive power value.
Another a kind of based on fast reaction electromotor the wind energy turbine set of present invention offer and photovoltaic electric Standing model verification method, described wind farm grid-connected point includes wind energy turbine set booster stations high-voltage side bus or node; If described photovoltaic plant has booster stations, described photovoltaic electric station grid connection point to include booster stations high-voltage side bus or joint Point;If photovoltaic plant includes the output aggregation point of photovoltaic plant without booster stations, described photovoltaic electric station grid connection point.
Comparing with immediate prior art, the present invention provides technical scheme to have a following excellent effect:
1, the technical scheme that the present invention provides relies on measured data to carry out the most equivalent external electrical network, effectively keeps away Exempt from the error to outside network system modeling;
2, the technical scheme that the present invention provides uses voltage magnitude and frequency amplitude measured data, and it obtains Difficulty is less than voltage phase angle, and typically also can meet the requirement of data synchronism;
3, the technical scheme that the present invention provides is equally applicable to not install phasor measuring set (PMU) Occasion;
4, the technical scheme that the present invention provides reduces the impact properly functioning on power station, reduces economy and damages Lose;
5, the technical scheme that the present invention provides possesses versatility, each unit of easy expanded application to power system The Accuracy Verification of part model and error location problem, have a extensive future;
6, the technical scheme that the present invention provides is by controlling excitation and the governor system control reference of electromotor Value comes equivalent external electrical network, clear physics conception, and simplicity is easy-to-use, it is simple to the electric power row of different knowledge hierarchies Industrial engineering (IE) teacher and researcher are grasped and use.
Accompanying drawing explanation
Fig. 1 is the wind energy turbine set/photovoltaic plant access system example structural representation of the present invention;
Fig. 2 is the wind energy turbine set using fast reaction electromotor equivalence external electrical network and the photovoltaic electric of the present invention Access system of standing structure chart;
Fig. 3 is the excitation system model schematic of the fast reaction electromotor of the present invention;
Fig. 4 is the governing system model schematic of the fast reaction electromotor of the present invention;
Fig. 5 is that the wind energy turbine set/photovoltaic electric station grid connection point voltage amplitude of the actual measurement of the present invention obtains with emulation The comparison diagram of wind energy turbine set/photovoltaic electric station grid connection point voltage amplitude;
Fig. 6 is the wind energy turbine set/photovoltaic electric station grid connection dot frequency amplitude of the actual measurement of the present invention and emulates the wind obtained The comparison diagram of electric field/photovoltaic electric station grid connection dot frequency amplitude.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be described in further detail.
Embodiment 1:
As shown in figures 1 to 6, this example invention provide a kind of based on fast reaction electromotor wind energy turbine set and Photovoltaic plant model verification method, comprises the following steps:
Step 1: measure the wind energy turbine set/voltage of photovoltaic electric station grid connection point, frequency, active power and idle merit Rate value;
Step 2: set up fast reaction electromotor and excitation thereof and governing system model;
Step 3: wind energy turbine set/photovoltaic electric station grid connection point actual measurement voltage and frequency values are input to fast reaction and send out In motor excitation and governing system model, control reference value as it;
Step 4: set up wind energy turbine set/photovoltaic plant access system model, wherein and partly use soon beyond site Speed reaction electromotor replaces;
Step 5: simulate certain on-the-spot disturbance in power system digital simulation analyzes software, obtain this and disturb The active power of dynamic lower wind energy turbine set/photovoltaic electric station grid connection point and reactive power value;
Step 6: the wind energy turbine set that step 5 is obtained/photovoltaic electric station grid connection point active power and reactive power value Deduct active power and the reactive power value of actual measurement, obtain departure;
Step 7: the size of the departure that discriminating step 6 obtains, if its absolute value is less than actual measurement wattful power Rate and the 5% of reactive power value, then it is assumed that the wind energy turbine set/light set up in power system digital simulation software Overhead utility model is accurately;If departure absolute value is more than actual measurement active power and reactive power value 5%, then it is assumed that the wind energy turbine set/photovoltaic plant model set up in power system digital simulation software is inaccurate True;
Step 8: if wind energy turbine set/photovoltaic plant model that the conclusion that step 7 obtains is set up is inaccurate, External electrical network equivalent point can be shunk further according to on-the-spot actual measurement situation, generates electricity with fast reaction Machine replaces the electric network model beyond new equivalent point, and repeats step 5-7, then can be at position error source.
In described step 1, wind energy turbine set booster stations high-voltage side bus or node are referred to for wind farm grid-connected point; For photovoltaic electric station grid connection point, if photovoltaic plant has booster stations, refer to booster stations high-voltage side bus or node, If photovoltaic plant is without booster stations, refer to the output aggregation point of photovoltaic plant.For the measurement data obtained, need Will process it, treatment measures include filtering, data break and system emulation step-length unification etc..
Fast reaction generator model in described step 2 can use 2 rank or the 3 rank synchronous generators of classics Machine model, excitation and governing system model can use the naive model in country/international standard, by arranging The time constant of excitation and governing system is sufficiently small, makes synchronous generator possess quick control characteristic.
In described step 3, by wind energy turbine set/photovoltaic electric station grid connection point actual measurement voltage and frequency values input excitation and In investigation model, can be according to the different function setting of simulation software, by reading containing a series of actual measurement electricity The methods such as the file of pressure and frequency values realize.
In described step 4 wind energy turbine set/photovoltaic plant access system model generally comprise wind energy turbine set/photovoltaic plant, Booster transformer, circuit, step-down transformer, load etc., can DIgSILENT PowerFactory, The most conventional power system digital simulation such as PSS/E, PSASP, BPA is analyzed in software and is set up.
In described step 5, on-the-spot disturbance typically should include the relatively large disturbances such as short trouble.During system emulation, The original state of trend distribution should be adjusted so that consistent with field measurement operating mode pre-fault status.
In described step 8, can be according to the abundant degree of on-the-spot actual measurement data, by constantly by outside Network equivalence point shrinks, and repeats step 5-7 and is accurately positioned the source of wind energy turbine set/photovoltaic plant model error.
Wherein, the correlated variables implication of Fig. 4 and Fig. 5 is: Vt0_measured: the wind energy turbine set/photovoltaic electric of actual measurement Stand grid-connected point voltage amplitude, Vt: the voltage magnitude of wind energy turbine set/photovoltaic electric station grid connection point, E in emulationfd: encourage Magnetic magnitude of voltage, Efd0: the original steady state value of excitation voltage, Vs: power system stabilizer, PSS (PSS) defeated Go out value, omega: the perunit value of generator speed, F0_measured: the perunit value of electromotor practical frequency value, Cosr: power factor, Sr: apparent energy, pt: mechanical output.
Finally should be noted that: above example is only in order to illustrate technical scheme rather than to it Limit, although those of ordinary skill in the field with reference to above-described embodiment it is understood that still can be right The detailed description of the invention of the present invention is modified or equivalent, and these are without departing from present invention spirit and model Any amendment enclosed or equivalent, the claims of the present invention all awaited the reply in application it In.

Claims (9)

1. wind energy turbine set based on fast reaction electromotor and photovoltaic plant model verification method, it is characterised in that: Including:
Measure the parameter of wind energy turbine set/photovoltaic electric station grid connection point;
Set up fast reaction electromotor, set up described generator excitation and governing system model;
Control reference value by system model described in described parameter determination;
Set up wind energy turbine set and photovoltaic plant access system model;
In described wind energy turbine set and photovoltaic plant access system model, simulate certain on-the-spot disturbance, obtain under this disturbance Described wind energy turbine set and the active power of photovoltaic electric station grid connection point and reactive power value;
Determine that described active power and reactive power value are respective partially with the active power of actual measurement and reactive power value Residual quantity;
Described wind energy turbine set and the accuracy of photovoltaic plant access system model is judged by described departure;
If described wind energy turbine set and photovoltaic plant access system model are inaccurate, then shrink actual measurement equivalent point further, Position error is originated.
2. wind energy turbine set based on fast reaction electromotor as claimed in claim 1 and photovoltaic plant modelling verification Method, it is characterised in that: the voltage and the frequency values parameter that wind energy turbine set and photovoltaic electric station grid connection point measurement are arrived are defeated Enter in described generator excitation and governing system model, control reference value as it.
3. wind energy turbine set based on fast reaction electromotor as claimed in claim 1 and photovoltaic plant modelling verification Method, it is characterised in that: in wind energy turbine set and photovoltaic plant access system model, part beyond itself and site Replace with fast reaction electromotor.
4. wind energy turbine set based on fast reaction electromotor as claimed in claim 1 and photovoltaic plant modelling verification Method, it is characterised in that: if the absolute value of described deviation value is less than each self-corresponding actual measurement active power and nothing The 5% of merit performance number, the then described wind energy turbine set set up and photovoltaic plant access system model are accurately;If institute State departure absolute value more than each self-corresponding actual measurement active power and the 5% of reactive power value, the then institute set up State wind energy turbine set and photovoltaic plant access system model is inaccurate.
5. wind energy turbine set based on fast reaction electromotor as claimed in claim 4 and photovoltaic plant modelling verification Method, it is characterised in that: if the wind energy turbine set of described foundation and photovoltaic plant access system model are inaccurate, root According to on-the-spot actual measurement, external electrical network equivalent point is shunk, replaces new equivalent point with fast reaction electromotor Electric network model in addition, at position error source.
6. wind energy turbine set based on fast reaction electromotor as claimed in claim 1 and photovoltaic plant modelling verification Method, it is characterised in that: described on-the-spot disturbance includes short trouble disturbance.
7. the wind energy turbine set based on fast reaction electromotor as described in claim 1,4 or 5 and photovoltaic plant mould Type verification method, it is characterised in that: described wind energy turbine set and photovoltaic plant access system model include wind energy turbine set and Photovoltaic plant, booster transformer, circuit, step-down transformer and load.
8. wind energy turbine set based on fast reaction electromotor as claimed in claim 1 and photovoltaic plant modelling verification Method, it is characterised in that: described parameter includes voltage, frequency, active power and reactive power value.
9. wind energy turbine set based on fast reaction electromotor as claimed in claim 1 and photovoltaic plant modelling verification Method, it is characterised in that: described wind farm grid-connected point includes wind energy turbine set booster stations high-voltage side bus or node; If described photovoltaic plant has booster stations, described photovoltaic electric station grid connection point to include booster stations high-voltage side bus or node; If photovoltaic plant includes the output aggregation point of photovoltaic plant without booster stations, described photovoltaic electric station grid connection point.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN108964122A (en) * 2018-07-16 2018-12-07 中国电力科学研究院有限公司 A kind of verification method and device of Wind turbines electrical model frequency response characteristic

Citations (3)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN108964122A (en) * 2018-07-16 2018-12-07 中国电力科学研究院有限公司 A kind of verification method and device of Wind turbines electrical model frequency response characteristic
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

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