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1、<p> Energy Management System of Admixture Electricity-generating</p><p> 1. One preface The admixture that wind force and solar cells generate electricity to constitute generates electricity the
2、system and is called the breeze/ light to repair the system with each other, all having some common weakness because of the breeze and solar energies, such as the energy density low, the stability is bad and is subjected
3、 to the weather influence not to continue, have the strong weak conjugation, solar energy of seasonal to interrupted etc. day and night. Be generate elect</p><p> The wind energy, solar energy has to repair
4、 sex with each other certainly, if the sun light of daytime is strong, the night breeze is many, the summer sunshine good, the breeze is weak; The spring stanza breeze of winter is strong but the sunlight is opposite wea
5、ker. Develop the wind force a solar energy to supply again to give or get an electric shock the system with each other, take into wind force and the solar energy techniques to synthesize the exploitation, thus constitute
6、 a kind of repair</p><p> Because the exportation power and the burden powers of the breeze electrical engineering set, the solar cell array is affect by the outside factor, changing the scope to compare gr
7、eatly, as a result turned the energy of generate electricity the system management to also put forward the higher request towards control and excellently. This text aims at the movement efficiency and credibility’s that
8、the characteristics of the system movement designs one energy management system( energy management </p><p> This text with the south science and engineering university dispersion type wind force a solar
9、energy of the new energy center admixture generates electricity the system for study the view, the structure diagram of the system, such as 2 -1 of figure 1 show:</p><p> May known by the chart 2-1, the sys
10、tem includes following several parties:The wind power machine and its controller: Total 15KW / sets of the biggest exportation power of the breeze machine, the wind force machine generates electricity the controller to
11、make the wind force machine been placed in the biggest power to output the appearance always.Solar cell and its electricity generation controller: The altogether 5 groups, solar cell each group of peaks tile 3 k W, the
12、solar energy electricity </p><p> The energy manages the system: collect each function of system unit movement parameter that system provide according to the data, carry out the valid management to the sys
13、tem and controls. Buffer electric capacity: carry out parts of electric voltages of the system direct current steady. Load and inversion: The new energy center load classification, a kind of load is a load which
14、the energy center work and the experiment must guarantee; Two kind of loads are the electrical energies whic</p><p> In the wind power, the solar energy and the load constitution electricity generation, use
15、s electricity in the system, as a result of the wind speed, the sunshine intensity and other climatic conditions changes, the wind electrical machinery, the solar cell array output and the load power all has comparativel
16、y wide range the undulation, thus set the very high request to the energy management system management system.This article in view of is being constructed a South China technical University </p><p> EMBED
17、Equation.3 , EMBED Equation.3 , EMBED Equation.3 , EMBED Equation.3 and EMBED Equation.3 difference for female line electric voltage, exportable and biggest power in the wind force machine, exportable and biggest
18、 power, system in the solar cell array of the direct current of the system a the type load the power and two loads needed need of power;</p><p> EMBED Equation.3 and EMBED Equation.3 output to make use
19、 of the coefficient and the solar cell arrays to output the utilization for the wind force machine of the system with respectively, namely count to amount it with the wind force machine for the set that the wind force
20、machine be in use than, for the number and the solar energy array set total amount that the solar energy array be in use than. Take EMBED Equation.3 、 EMBED Equation.3 EMBED Equation.3 [0,0.2,0.4,0.6,0.8,1], EMBED&
21、lt;/p><p> A power of the breeze electrical engineering capacity that constitutes to mix with to generate electricity the system is more and greatly, as a result the choice regard a power supply of the breeze
22、electrical engineering as principle, the solar cell array is the energy tiny adjust the part.</p><p> (2)Rule two According to the system work characteristic, takes the direct current side terminal volt
23、age EMBED Equation.3 expected value is 216 V, when the renewable energy may output the maximum work rate is bigger than the load request, the renewable energy to the electrical network does not transport the electrica
24、l energy.(3)Rule three Takes when here the direct current generator voltage is lower than 192 V, through incorporates the controller to put through the electrical network,</p><p> Inputs the multi- out
25、puts, the change complex characteristic in view of the system, this system uses in the intelligent control the fuzzy control technology (Fuzzy Control, is called FC) to realize to the system carries on the management and
26、 the control; Studied and has designed one kind based on the graduation fuzzy control (Hierarchical Fuzzy Control, was called HFC) the algorithm energy management system management system.</p><p> 3. Misty
27、controls</p><p> The fuzzy set with the fuzzy control concept is by American University of California famous Professor L. A. Z a d e h in it Fuzzy Sets,F(xiàn)uzzy Algorithm and Rationale for Fuzzy Control and so
28、 on famously discusses center first was proposing one kind is completely different with the traditional mathematics and the control theory intelligent theory. Its production not only developed the broad classical mathema
29、tics foundation, moreover was causes the computer science to simulate the significant break</p><p> It include: The importation quantity faintness turns to connect, knowledge base( database and the rule dat
30、abase), reason logically the machine to reach agreement the faintness to connect.</p><p> (1)The faintness turns to connect</p><p> The importation of the misty controller is usually certain q
31、uantity, must after faintness turn change into the language that controller know or change the quantity then can be use by the controller, the faintness turns to connect is to convert the certain importation quantity as
32、the faintness to measure, it is also the importation of the misty controller to connect.</p><p> (2)Knowledge base</p><p> The knowledge base description form mainly has two kinds of: Database
33、 and rule database. Database is deposits all importations and output to change to measure of all misty son gather of belong to one degree relation of vector value; If in order to continue the area, the theory area datab
34、ase then for belong to the function correspond.The regular storehouse is the operator which and has the rich experience based on the expert knowledge acts according to the long-term accumulation the experience,</p>
35、;<p> (3)Reason logically to reach agreement the faintness to connect</p><p> While reason logically, the controller reasons logically the machine according to the misty quantity that input, control
36、ling the rule through the faintness to solve the faintness to relate to the square distance, obtaining the misty control quantity of the misty controller.</p><p> From reason logically the amount of control
37、 that machine acquire and is a misty vector, can't be use directly to control to be control object, must still convert the certain control measure, we be called this process to solve the faintness or faintnesses to m
38、easure clear to turn. Usually reason logically and the exportation carries to have to convert the misty quantity as clear value of process be called the solution faintness.4. Designs of the EMS </p><p> Th
39、is article designs the wind can a solar energy mix generating system structure diagram like chart 2 - 6 show</p><p> For the sake of the exaltation can the exploitation efficiency of the renewable energy, u
40、nder the condition that wind energy and solar energies can satisfy to load the request, the load then is provide by the wind energy and solar energy the demanding energy; At the wind energy and solar energies can't s
41、atisfy the load request, at making use of well can the foundation of the renewable energy up, the load is provided together by the wind energy, solar energy and charged barbed wire nets the deman</p><p> Am
42、ong them EMBED Equation.3 —female line electric voltage of direct current, EMBED Equation.3 —the wind power equips the exportation electric current, EMBED Equation.3 —the solar energy generates electricity to equip
43、the exportation electric current, EMBED Equation.3 —the system transport the load get electric current, EMBED Equation.3 —the charged barbed wire net transports to give or get an electric shock the direct current the
44、 part get electric current, an electric capacity of C—dir</p><p> May know by the 2-7 chart, the system input value are more, in view of a wind power solar energy mix generating system characteristic, uses
45、 the graduation fuzzy control in here us the strategy to come to the system to carry on the control, and designs four level of graduation fuzzy controllers to realize to mixes the generating system to carry on thee energ
46、y management and the control.System structure drawing like chart 2 - 8 show:</p><p> The burden of the system is to be provided directly by the direct current electric power and through go against to chang
47、e the machine exportation, the stability of the direct current electric voltage becomes direct influence's is a system to output the exchanges electric power quantity, stability and dependable key factors. As a resul
48、t the choice direct current is part of physically the direct current electric voltage EMBED Equation.3 measure with the direct current electric voltage variety E</p><p> EMBED Equation.3 is a comprehen
49、sive direct current electric voltage EMBED Equation.3 measure with the direct current electric voltage variety EMBED Equation.3 , get EMBED Equation.3 future appearance. Substantially, it reflected the system on t
50、he current direct current electric voltage foundation, if don't change the control quantity, then next sample the estimate value of the time direct current side electric voltage is EMBED Equation.3 , because of be
51、fore next adoption period arriv</p><p> EMBED Equation.3 is a comprehensive burden EMBED Equation.3 and load the direct current electric voltage etc. the effect be worth EMBED Equation.3 get of a thr
52、ee change the quantity. When EMBED Equation.3 big in expect to be worth, the energy that the system burden need is in addition to from can renewable energy in addition to provide, still having a part to need to be kep
53、t the ability component electric capacity by the direct current, then can lower the direct current side electric v</p><p> The fourth cascade control output EMBED Equation.3 and the third cascade control
54、 output EMBED Equation.3 affects to the electricity generation control device to the load power supply. When EMBED Equation.3 and EMBED Equation.3 cannot satisfy the load request, when the direct component voltage
55、is lower than 192 V, puts through the electrical network, can a solar energy mix generating system provide the electrical energy together by the electrical network gentle breeze; When the direct co</p><p>
56、5. Summary</p><p> This chapter first simply introduced the wind power solar energy mix generating system disposition, afterwards aimed at this multi- inputs to be most the variable the disperser-like wind
57、power solar energy mix electricity generation energy management system management system, the research has designed based on the heredity algorithm graduation fuzzy control algorithm, and produced this system to use grad
58、uation fuzzy control the detailed design procedure. Finally, with the aid of to the simulatio</p><p> 混合發(fā)電能量管理系統(tǒng)</p><p> 1. 引言 風(fēng)力與太陽(yáng)能電池發(fā)電組成的混合發(fā)電系統(tǒng)又叫作風(fēng)/光互補(bǔ)系統(tǒng),由于風(fēng)和太陽(yáng)能都有一些共同的缺點(diǎn),如能量密度低、穩(wěn)定性差、 受
59、天氣影響不連續(xù)、有季節(jié)性強(qiáng)弱變化、太陽(yáng)能日夜間斷等。分別由風(fēng)力和太陽(yáng)能發(fā)電來(lái)供電,其供電的可靠性大大降低。 風(fēng)能、太陽(yáng)能具有一定的互補(bǔ)性,如白天太陽(yáng)光強(qiáng),夜晚風(fēng)多,夏天日照好、風(fēng)弱;冬春季節(jié)風(fēng)大而陽(yáng)光相對(duì)較弱。開(kāi)發(fā)風(fēng)力一太陽(yáng)能互補(bǔ)發(fā)電系統(tǒng),將風(fēng)力與太陽(yáng)能技術(shù)加以綜合利用,從而構(gòu)成一種互補(bǔ)的可分散布點(diǎn)的新型能源,將是本世紀(jì)能源結(jié)構(gòu)中一個(gè)新的增長(zhǎng)點(diǎn)。有條件時(shí)通過(guò)搭配適當(dāng)容量的蓄電池或接入市電作為備用電源,可使運(yùn)行費(fèi)用大大的降低、供電
60、的可靠性大大的提高。 目前國(guó)內(nèi)主要針對(duì)獨(dú)立的風(fēng)力發(fā)電、光伏發(fā)電及風(fēng)一光互補(bǔ)發(fā)電控制系統(tǒng)的研究較多。在設(shè)計(jì)風(fēng)一光發(fā)電系統(tǒng)中,普遍采用的設(shè)計(jì)思路是根據(jù)負(fù)載每天的總耗電量,和由當(dāng)?shù)貧庀髷?shù)據(jù)得到的日輻射量來(lái)確定太陽(yáng)能電池陣列、風(fēng)力發(fā)電機(jī)的容量,再來(lái)確定可再生能源發(fā)電控制裝置的功率和蓄電池容量,但是在混合發(fā)電系統(tǒng)的運(yùn)行控制和優(yōu)化管理方法方面的研究較少。 由于風(fēng)電機(jī)組、太陽(yáng)能電池陣列的輸出功率和負(fù)荷功率受外界因</p>
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