CN107782999A - A kind of method of work of wind light mutual complementing nature imitation experiment device - Google Patents

A kind of method of work of wind light mutual complementing nature imitation experiment device Download PDF

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CN107782999A
CN107782999A CN201711242404.1A CN201711242404A CN107782999A CN 107782999 A CN107782999 A CN 107782999A CN 201711242404 A CN201711242404 A CN 201711242404A CN 107782999 A CN107782999 A CN 107782999A
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capacitance
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voltage
wind
electric capacity
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2605—Measuring capacitance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/003—Environmental or reliability tests
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
    • G09B23/188—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for motors; for generators; for power supplies; for power distribution

Abstract

The present invention relates to a kind of method of work of wind light mutual complementing nature imitation experiment device, including：Photovoltaic generation experimental considerations unit, Wind Generation Research unit, and the off-network inversion module being connected with the battery；The photovoltaic generation experimental considerations unit includes：Photovoltaic grid-connected inversion module, dc switch module, photovoltaic module module；The Wind Generation Research unit includes：Wind-driven generator module, main transformer module, filtering compensation device module；Each module is tested wire by grafting respectively and is connected；The present invention passes through included photovoltaic generation experimental considerations unit, Wind Generation Research unit and tested with completing photovoltaic and wind power grid.

Description

A kind of method of work of wind light mutual complementing nature imitation experiment device
Technical field
The present invention relates to one kind to supply distribution experimental system, more particularly to a kind of work side of wind light mutual complementing nature imitation experiment device Method, it is established that there is the method for work for distribution experimental system using new energy as representative of certain capacity.
Background technology
There are two types using solar power generation：One kind is solar power generation（Also known as solar energy generates electricity）, it is another kind of to be Solar thermal power generation（Also known as solar energy thermal-power-generating）.It is economical and practical because the utilization rate that solar energy generates electricity is high, largely promoted Use.It is a kind of generation mode that solar energy is translates directly into electric energy that solar energy, which generates electricity,.It includes photovoltaic generation, photochemistry Four kinds of forms that Generate, Generation, Generator sensing generates electricity and photo-biological generates electricity, wherein, technology relative maturity at this stage, using it is more be the sun Can photovoltaic generation.And the principle of wind-power electricity generation, it is to drive air vane rotation using wind-force, then through booster engine by the speed of rotation Degree lifting, to promote electrical power generators.Its essence is that the kinetic energy of wind is transformed into mechanical kinetic energy, then mechanical kinetic energy is converted into electricity Energy.
But although wind energy, solar energy is there is many of the above advantage, but we still can not ignore their own Shortcoming.They are all not only a kind of very low energy of energy density, and can all be changed with the change of weather and weather, I.e. and a kind of energy stability difference the energy.These drawbacks bring problem to their popularization and application.Thus in order to establish Play more reliable and more stable, the energy resource system of economical rationality, it would be desirable to make full use of wind energy with solar energy in many complementations Property, wind energy and solar energy composite are used.
The content of the invention
It is an object of the invention to provide a kind of method of work of wind light mutual complementing nature imitation experiment device, its meet to solar energy and The needs of wind power grid experiment.
In order to solve the above-mentioned technical problem, the invention provides a kind of method of work of wind light mutual complementing nature imitation experiment device, Wherein, the wind light mutual complementing nature imitation experiment device includes：Photovoltaic generation experimental considerations unit, Wind Generation Research unit, and with institute State the connected off-network inversion module of battery；The photovoltaic generation experimental considerations unit includes：Photovoltaic grid-connected inversion module, dc switch Module, photovoltaic module module；The Wind Generation Research unit includes：Wind-driven generator module, main transformer module, filtering are mended Repay apparatus module；The method of work includes：During experiment, by each wire distinguish each near modules of grafting input and output hole so that The input of corresponding module, output end are connected.
Further, the wind light mutual complementing nature imitation experiment device also includes：For carrying out the electric capacity of electric capacity on-line checking experiment Test cell, the method for work of the capacity measurement unit comprise the following steps：
Step 1：The voltage vector at measured capacitance both ends is gathered, and the voltage vector is decomposited into fundamental voltageWithnIt is secondary Harmonic voltage component, i.e. the superimposed voltage at the measured capacitance both ends, i.e.,, calculating should The virtual value of superimposed voltageU, the virtual value of fundamental voltageU 0。
Step 2：Electric capacity sound pressure level database is established, the database includes：All types of electric capacity are in only fundamental voltage Virtual value distinguish corresponding to electric capacity sound pressure level.
Default measured capacitance type, rated capacitanceC 0, according to measured capacitance type and the virtual value of current fundamental voltageU 0 Corresponding capacitance sound pressure level is obtained from the electric capacity sound pressure level database。
Voice signal caused by measured capacitance is gathered, to obtain corresponding capacitance sound pressure level, pass through formula, calculate the actual capacitance of measured capacitanceC x 。
Step 3：According to the actual capacitance of measured capacitanceC x With the virtual value of superimposed voltageUEstablish capacitance and estimate public affairs Formula, i.e.,；Wherein,CExtreme capacitance values when being damaged for measured capacitance,tFor capacitance damage expeced time,kFor list Virtual value U of the measured capacitance in current fundamental voltage in the time of position0Electric capacitance change coefficient corresponding to lower, i.e., wherein,C x1WithC x2For the capacitance initial value and final value of measured capacitance in the unit time.
Set the extreme capacitance valuesC, capacitance damage t expeced time meter is derived by the capacitance predictor formula Formula is calculated, i.e.,, to calculate the expeced time that measured capacitance is damaged.
Further, the virtual value U of the superimposed voltage passes through fundamental voltageWith nth harmonic component of voltageHave The square root of valid value quadratic sum obtains.
Further, the nth harmonic component of voltageMiddle n takes 5.
The above-mentioned technical proposal of the present invention has advantages below compared with prior art：（1）The present invention passes through included light Volt generator experimental unit, Wind Generation Research unit are tested with completing photovoltaic and wind power grid；（2）The present invention is supersonic sensing Device and High Frequency Current Sensor combine, and realize the on-line checking that need not close power supply；（3）The present invention is passed by ultrasonic wave Electric capacity sound pressure level caused by sensor collection measured capacitance；The magnitude of voltage at High Frequency Current Sensor collection electric capacity both ends, establishes electricity Capacity predictor formula, the life-span of measured capacitance is predicted using the formula, it is actual than traditional only detection capacitance present Capacitance is more forward-looking to judge the electric capacity life-span, and can open up Power Electronic Technique class by the experimental provision Journey, the assessment to electric capacitor have reference value.
Brief description of the drawings
In order that present disclosure is more likely to be clearly understood, below according to specific embodiment and with reference to accompanying drawing, The present invention is further detailed explanation, wherein
The structured flowchart of Fig. 1 wind light mutual complementing nature imitation experiment devices；
The theory diagram of Fig. 2 capacity measurement units；
Fig. 3 is the flow chart of the method for work of capacity measurement unit.
Embodiment
To make the object, technical solutions and advantages of the present invention of greater clarity, with reference to embodiment and join According to accompanying drawing, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit this hair Bright scope.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring this The concept of invention.
Embodiment 1
As shown in figure 1, a kind of method of work of wind light mutual complementing nature imitation experiment device, wherein, wind light mutual complementing nature imitation experiment device bag Include：Photovoltaic generation experimental considerations unit, Wind Generation Research unit, and the off-network inversion module being connected with the battery；It is described Photovoltaic generation experimental considerations unit includes：Photovoltaic grid-connected inversion module, dc switch module, photovoltaic module module；The wind-power electricity generation Experimental considerations unit includes：Wind-driven generator module, main transformer module, filtering compensation device module；The method of work includes：It is real When testing, each wire is distinguished into the input and output hole of each near modules of grafting so that the input of corresponding module, output end are connected.
The corresponding module refers to that each module in an experimental considerations unit is attached according to requirement of experiment, i.e. photovoltaic The input hole of the delivery outlet connection dc switch module of assembly module, the delivery outlet connection of the dc switch module are grid-connected inverse Become the input hole of module.
The photovoltaic grid-connected inversion module, dc switch module, main transformer module, filtering compensation device module, off-network For inversion module respectively on experimental substrate, each module both sides are respectively equipped with input and output hole, and the interface, which is suitable to grafting experiment, leads Line builds experimental circuit.
Above-mentioned each module is that it is used to allow student to complete experimental wiring in the prior art with disclosed circuit module, with And used in measurement necessary data.Student can carry out respective gut according to curriculum requirements, improve the manipulative ability of student.
Embodiment 2
As shown in Fig. 2 the wind light mutual complementing nature imitation experiment device on the basis of embodiment 1 also includes：Exist for carrying out electric capacity The capacity measurement unit of line test experience, the capacity measurement unit include：
Ultrasonic sensor, for gathering voice signal caused by measured capacitance, to obtain corresponding capacitance sound pressure level。
High Frequency Current Sensor, for gathering the voltage vector at electric capacity both ends.
The ultrasonic sensor, High Frequency Current Sensor pass through corresponding data conditioning unit and data processing and control respectively Unit is connected；That is, ultrasonic sensor, High Frequency Current Sensor respectively by first, second data conditioning unit and numerical control at Reason control unit is connected, and first, second data conditioning unit can use the certain proportion being made up of integrated operational amplifier Amplifier.
The data processing control units, including：
Electric capacity superimposed voltage computing module, suitable for the voltage vector of acquisition is decomposited into fundamental voltageWithnSubharmonic voltage Component, i.e. the superimposed voltage at the measured capacitance both ends, i.e.,, calculate the superimposed voltage Virtual valueU, while calculate the virtual value of fundamental voltageU 0；Wherein, obtaining harmonic wave and the method for fundamental wave is obtained by FFT computings Arrive, this method existing a large amount of descriptions in the prior art document, such as：Outstanding in the September, 2009 of Li Jiasheng, bavin generation is published in periodical 《Electric power system protection and control》On paper " electric energy quality harmonic m-Acetyl chlorophosphonazo on-line quick detection technique study " in existing phase Close description.
Capacitance computing module, suitable for according to default measured capacitance type, rated capacitanceC 0, pass through the electric capacity acoustic pressure DBMS storehouse obtains measured capacitance electric capacity sound pressure level corresponding with the virtual value of only each fundamental voltage；Pass through measured capacitance Caused voice signal, to obtain corresponding capacitance sound pressure level, pass through formula, Calculate the actual capacitance of measured capacitanceC x ；Wherein, the electric capacity sound pressure levelBy establishing electric capacity sound pressure level database Mode obtain, i.e., all types of electric capacity electric capacity sound pressure level corresponding with the virtual value of each fundamental voltage is stored with the database, By the type of default input measured capacitance, and the currently virtual value of fundamental voltage obtained by calculating, from electric capacity acoustic pressure series Electric capacity acoustic pressure DBMS corresponding to the electric capacity is obtained according to library lookup；Calculate corresponding capacitance sound pressure levelMethod in paper document： In June, 2010 is published in《Electronic technology journal》The capacitor noise level calculation method based on vibration signal in be disclosed.
Measured capacitance life-span computing module, suitable for the actual capacitance according to measured capacitanceC x With the virtual value of superimposed voltageUCapacitance predictor formula is established, i.e.,；Wherein,CExtreme capacitance values when being damaged for measured capacitance,tFor Capacitance damage expeced time,kFor measured capacitance in the unit time current fundamental voltage virtual valueU 0Capacitance corresponding to lower Variation coefficient, i.e., whereinC x1WithC x2For in the virtual value of current fundamental voltageU 0Under unit when The capacitance initial value and final value of interior measured capacitance；Electric capacitance change coefficientkCan be according to all types of electric capacity in each fundamental voltage Virtual value under by actual measurement establish electric capacitance change coefficient data storehouse obtain, the electric capacitance change coefficient data storehouse is according to electricity The virtual value for holding model and corresponding fundamental voltage searches to obtain electric capacitance change coefficient k corresponding to the electric capacity, its specific acquisition side Method：Capacitance initial value and final value of the measured all types of electric capacity within a period of time under the virtual value of various fundamental voltages, then Corresponding capacitance initial value and final value in a unit interval are conversed, according to the type of default measured capacitance, and calculates institute The virtual value of current fundamental voltage is obtained, that is searched from electric capacitance change coefficient data storehouse goes out electric capacity quantitative change corresponding to the electric capacity Change coefficientk, for the ease of calculating, if variable quantity of the electric capacity within the unit interval is linear；And estimated by the capacitance The derivation of equation goes out capacitance damage t expeced time calculation formula, i.e.,, set the extreme capacitance valuesC, to calculate Go out the expeced time that measured capacitance is damaged.
The superimposed voltageVirtual value U computational methods include：Fundamental voltageWithnSubharmonic voltage componentVirtual value quadratic sum square root.It is describednSubharmonic voltage componentInnTake 5.
The data processing control units are realized by FPGA module, i.e. fpga chip XC6SLX9-TQG144.
Table 1 is experimental data and actual measurement comparing result one, and the electric capacitor of table 1 selects huge magnificent electric capacitor BSMJ- 0.415-15-3 15Kvar, the extreme capacitance values C is set as the 40% of former capacity.
The experimental data of table 1 and the actual measurement table of comparisons
Wherein, when calculating electric capacitance change coefficient k, the unit interval is 24 hours, i.e., under 525V fundamental wave virtual values, one day Capacitance change is 0.08uF through actual measurement.
Table 2 is experimental data and actual measurement comparing result two, and the electric capacitor of table 2 selects Shanghai Wei Sikang electric capacitors BSMJ0.4-15-3 and electric capacity BSMJ 0.45-15-3, the extreme capacitance values C is set as the 40% of former capacity.
The experimental data of table 2 and the actual measurement table of comparisons
Wherein, when calculating electric capacitance change coefficient k, the unit interval is 24 hours, i.e., under 450V fundamental wave virtual values, one day Capacitance change is 0.12uF through actual measurement；Or under 415V fundamental wave virtual values, the capacitance change of one day is by actual measurement 0.11uF。
Table 3 is experimental data and actual measurement comparing result three, and the electric capacitor of table 3 selects De Lixi self-healing low-voltage capacitors The parallel power condenser BSMJS0.4 20-3 BSMJ, the extreme capacitance values C is set as the 40% of former capacity.
The experimental data of table 3 and the actual measurement table of comparisons
Wherein, when calculating electric capacitance change coefficient k, the unit interval is 24 hours, i.e., under 380V fundamental wave virtual values, one day Capacitance change is 0.063uF through actual measurement.
Fundamental wave virtual value in the present invention is it is also assumed that be voltage effective value ideally.
From table 1 to table 3 as can be seen that the present invention electric capacity on-line checking estimate electric capacity remaining time be it is effective, With accuracy it is high the characteristics of, during extreme capacitance values C when close to electric capacity actual capacitance close to capacitance damage, settled accounts As a result closer to measured result.Therefore, this experimental provision can complete necessary electric capacity on-line checking experiment, and its data has very high Reference value；Student can have very deep understanding by capacity measurement unit to the use of electric capacitor, enrich scene The subject of complementary emulation experiment.
Embodiment 3
As shown in figure 3, on the basis of embodiment 2, there is provided a kind of method of work of wind light mutual complementing nature imitation experiment device, wherein, The wind light mutual complementing nature imitation experiment device also includes：For carrying out the capacity measurement unit of electric capacity on-line checking experiment, the electricity The method of work for holding test cell comprises the following steps：
Step S100, obtain superimposed voltage, the virtual value of fundamental voltage at measured capacitance both ends.
The voltage vector at measured capacitance both ends is gathered, and the voltage vector is decomposited into fundamental voltageWithnSubharmonic Component of voltage, i.e. the superimposed voltage at the measured capacitance both ends, i.e.,, calculate superposition electricity The virtual value of pressureU, while calculate the virtual value U of fundamental voltage0；Wherein, it is by FFT computings to obtain harmonic wave and the method for fundamental wave Obtain, this method existing a large amount of descriptions in the prior art document, such as：Outstanding in the September, 2009 of Li Jiasheng, bavin generation is published in periodical 《Electric power system protection and control》On paper " electric energy quality harmonic m-Acetyl chlorophosphonazo on-line quick detection technique study " in existing phase Close description.Electric capacity is electric capacitor in the present invention.
Step S200, obtain the actual capacitance of measured capacitance.
Electric capacity sound pressure level database is established, the database includes：All types of electric capacity are effective only each fundamental voltage It is worth electric capacity sound pressure level corresponding to distinguishing.
Default measured capacitance type, rated capacitanceC 0, measured capacitance is obtained by the electric capacity sound pressure level database and existed The virtual value of current fundamental voltageU 0Electric capacity sound pressure level corresponding to lower；Voice signal caused by measured capacitance is gathered, to obtain Obtain corresponding capacitance sound pressure level, pass through formula, calculate the actual electricity of measured capacitance CapacityC x ；Wherein, the electric capacity sound pressure levelObtained by way of establishing electric capacity sound pressure level database, i.e., in the database All types of electric capacity electric capacity sound pressure level corresponding with the virtual value of only each fundamental voltage is stored with, passes through default input measured capacitance Type, and obtained by calculating current fundamental voltage virtual value, obtain the electric capacity pair from electric capacity sound pressure level database lookup The electric capacity acoustic pressure DBMS answered；Wherein, only each fundamental voltage refers to no harmonic voltage；Calculate corresponding capacitance sound pressure level Method in paper document：In June, 2010 is published in《Electronic technology journal》The capacitor noise leveler based on vibration signal It has been disclosed in calculation method.
Step S300, by establishing capacitance predictor formula, calculate the expeced time that measured capacitance is damaged.
Step S310, establish capacitance predictor formula and electric capacitance change coefficient k calculation formula.
According to the actual capacitance of measured capacitanceC x With the virtual value of superimposed voltageUCapacitance predictor formula is established, i.e.,；Wherein,CExtreme capacitance values when being damaged for measured capacitance,tFor capacitance damage expeced time,kFor the unit time Virtual value of the interior measured capacitance in current fundamental voltageU 0Electric capacitance change coefficient corresponding to lower, i.e.,C x1 WithC x2For in the virtual value of current fundamental voltageU 0Under unit interval in measured capacitance capacitance initial value and final value；Capacitance Variation coefficientkThe electric capacitance change system that can be established according to the virtual value of all types of electric capacity and only each fundamental voltage by actual measurement Number database obtains, and the electric capacitance change coefficient data storehouse searches to obtain according to the virtual value of electric capacity model and corresponding fundamental voltage Electric capacitance change coefficient corresponding to the electric capacityk, its specific acquisition methods：It is all kinds of measured by under the virtual value of various fundamental voltages Capacitance initial value and final value of the type electric capacity within a period of time, then converse in a unit interval corresponding capacitance initial value and Final value, according to the virtual value of current fundamental voltage obtained by the type of default measured capacitance, and calculating, from electric capacitance change system That is searched in number database goes out electric capacitance change coefficient corresponding to the electric capacityk, for the ease of calculating, if electric capacity is within the unit interval Variable quantity be linear.
Step S320, calculate the expeced time that measured capacitance is damaged.
Capacitance damage expeced time is derived by the capacitance predictor formulatCalculation formula, i.e.,If The fixed extreme capacitance valuesC, to calculate the service life of the expeced time that measured capacitance is damaged, i.e. measured capacitance；Its In, extreme capacitance valuesCBy being manually set, the threshold value that also gives a warning for capacitance, it is easy to carry out online evaluation to electric capacity.
Further, the virtual value of the superimposed voltageUPass through fundamental voltageWithnSubharmonic voltage component's The square root of virtual value quadratic sum obtains.
Further, it is contemplated that harmonic energy is distributed, describednSubharmonic voltage componentInnTake 5.
It should be appreciated that the above-mentioned embodiment of the present invention is used only for exemplary illustration or explains the present invention's Principle, without being construed as limiting the invention.Therefore, that is done without departing from the spirit and scope of the present invention is any Modification, equivalent substitution, improvement etc., should be included in the scope of the protection.In addition, appended claims purport of the present invention Covering the whole changes fallen into scope and border or this scope and the equivalents on border and repairing Change example.

Claims (1)

  1. A kind of 1. method of work of wind light mutual complementing nature imitation experiment device, it is characterised in that the wind light mutual complementing nature imitation experiment device Including：Photovoltaic generation experimental considerations unit, Wind Generation Research unit, and the off-network inversion module being connected with the battery；
    The photovoltaic generation experimental considerations unit includes：Photovoltaic grid-connected inversion module, dc switch module, photovoltaic module module；
    The Wind Generation Research unit includes：Wind-driven generator module, main transformer module, filtering compensation device module；
    The method of work includes：During experiment, each wire is distinguished into the input and output hole of each near modules of grafting so that respective mode The input of block, output end are connected；
    The wind light mutual complementing nature imitation experiment device also includes：For carrying out the capacity measurement unit of electric capacity on-line checking experiment, institute The method of work for stating capacity measurement unit comprises the following steps：
    Step 1：The voltage vector at measured capacitance both ends is gathered, and the voltage vector is decomposited into fundamental voltageWithnIt is secondary humorous Wave voltage component, you can draw the superimposed voltage at the measured capacitance both ends, i.e.,, then Calculate the virtual value of the superimposed voltageU, the virtual value of fundamental voltageU 0；
    Step 2：Electric capacity sound pressure level database is established, the database includes：All types of electric capacity have with only fundamental voltage Electric capacity sound pressure level corresponding to valid value difference；
    Default measured capacitance type, rated capacitanceC 0, according to measured capacitance type and the virtual value of current fundamental voltageU 0From institute State electric capacity sound pressure level database and obtain corresponding capacitance sound pressure level；
    Voice signal caused by measured capacitance is gathered, to obtain corresponding capacitance sound pressure level, pass through formula, Calculate the actual capacitance of measured capacitanceC x ；
    Step 3：According to the actual capacitance of measured capacitanceC x With the virtual value of superimposed voltageUCapacitance predictor formula is established, i.e.,；Wherein,CExtreme capacitance values when being damaged for measured capacitance,tFor capacitance damage expeced time,kFor the unit time Virtual value of the interior measured capacitance in current fundamental voltageU 0Electric capacitance change coefficient corresponding to lower, i.e., its In,C x1WithC x2For the capacitance initial value and final value of measured capacitance in the unit time；
    Set the extreme capacitance valuesC, capacitance damage expeced time is derived by the capacitance predictor formulatCalculating it is public Formula, i.e.,, to calculate the expeced time that measured capacitance is damaged；
    The virtual value of the superimposed voltageUPass through fundamental voltageWithnSubharmonic voltage componentVirtual value quadratic sum Square root obtain.
CN201711242404.1A 2014-06-11 2014-09-18 A kind of method of work of wind light mutual complementing nature imitation experiment device Withdrawn CN107782999A (en)

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CN201711245009.9A Active CN107991563B (en) 2014-06-11 2014-09-18 Wind-solar complementary simulation experiment device for power supply and distribution and grid-connected experiment and working method
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CN201711077611.6A Withdrawn CN107807291A (en) 2014-06-11 2014-09-18 For the wind light mutual complementing nature imitation experiment device for distribution, grid-connected experiment
CN201711245018.8A Expired - Fee Related CN108037386B (en) 2014-06-11 2014-09-18 Wind-solar complementary simulation experiment device for power supply and distribution and grid-connected experiment
CN201711075357.6A Withdrawn CN107607823A (en) 2014-06-11 2014-09-18 A kind of method of work of wind light mutual complementing nature imitation experiment device
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CN107607823A (en) * 2014-06-11 2018-01-19 钱珺佳 A kind of method of work of wind light mutual complementing nature imitation experiment device

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CN110649656B (en) * 2019-10-14 2023-03-24 国网山东省电力公司莱芜供电公司 Grid-connected system of photovoltaic power station

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