NguySn Thanh Ha vd Dtg Tap chi KHOA HOC & CONG NGH£ 166(06). 133-138
MO HINH TOI Utr HOA StJ" DUNG D 6 N G THOI NHIEU DANG NANG LU'CfNG CHO KHU \ a r c
D O T H INguyen Thanh H a , Pham Thi Ngoc Dung"
'Dgi hgc Thai NguySn. ^Trudng Dgi hoc Kp thudt Cdng nghi?p - DH Thdi Nguyen
TOMTAT
Cac nghien ciiu v l mo hinh nSng tuong (NL) trayin thong trudc day thudng dirpc de cap den m6t each dpc lap va don Ie, chua cd nhilu pMn tich danh gid mpt each ting till cac loai hinh NL De nang cao hieu qua sy dyng va tSng cudng sy phoi kit hpp giQa cac loai hinh NL, bai bao tien hanh phan tich tdi mi hoa mo hinh sy dung ding thdi nguon idiiet (nong, Ianh) va NL dien ap dyng cho doi tuong khu vyc do thi. Trong do, cac qua trinh ehuyin hda, phan phoi, luu trCl, quan ly toi uu NL dupc xem xet dudi nhilu gdc do khac nhau, tu do thilt lap mo hinh danh gia tinh kmh te, dp tm cay, tinh hieu qua v^ mdt so Ipi ieh eho su phat tnen ben vftng ciia nang lupngs, Cuoi ciing, dua ra mot so quan dilm va de xuat phu hpp dua tren tinh hinh phat trien va thyc trang sii dyng nang lupng hien nay
Tir khoa: hi thdng ndng luang. toi uu hoa. mo hlnh hda, mo hinh dong chdy pho qudt, ddnh gid
M d D A U
Cac yeu cau dat ra trong lirUi vuc nang lugng (NL) nhu: Toi iru hda k i t cau, nang cao hipu suat sii dyng v d i n h i l u dgng nang lugng khac nhau, ap dung c i c g i i i phap m d i nh^m thay doi raoi t r u d n g sinh thai, dang la nhirng van de cap t h i l t dat ra trong t h u c trgng sii dyng NL hipn nay
Energy Intemet-(EI) [ I ] la k h i i nipra da dugc nha kinh t l hgc n g u d i M y Jeremy Riflcin d l cap v l mot he thong nang l u g n g da dgng. Y tudng v l he thong mang ludi nang lugng bao gom nhieu dgng N L khac nhau dugc su dyng mdt c i c h cd h e t h o n g cho den nay da cd nhieu budc p h i t t r i l n m d i , tac dgng sau sac den sy phat triln ciia khoa hoc ky thugt va x a hpi [2].
Trong hp thong ragng ludi nang lugng EI, logi hinh N L ddng vai trd vd ciing quan trpng (hinh 1). Hien nay cac Ioai hinh N L thudng dang d u g c sii dung la nang Iugng dien, nhipt va khi dot. T u y nhien, cac loai hinh nay van chu y l u d u g c nghien c u u (van h i n h , tinh toan loi uu, quy hoach) theo hinh tinic va rad hinh ddc lap, d a n le, c h u a cd nghien ciiu long hop cho mgt khu v y c cu t h i [3]. Khu v u c do thi l i noi cd mat dp phy t i i dan dung, thuong mgi, giao thdng d a y dgc. Vi vay, day la doi l u g n g dugc u u lien ap dyng m d hinh EI mpt each cd hieu qua nhat
' Tel: 0913 073591. Email: hant@tnu,edu vn
Mpt hp thong sii dung nhilu loai hinh N L k h i c nhau thi cd tiie tien hanh xay dyng giai phap nang cao hieu suat sii dung, dam b i o giam thieu t i c dpng tieu cyc tdi mdi trudng.
Hien nay, rat nhilu quoc gia da tien hiinh nghien ciiu cite van de lien quan den md hinh ciia he thong nay. Tai My, nam 2007 da ban hanh hoach dinh chiln luoc c i c nguon N L (integrated resource planning) [4] Tai Canada, tang cudng sii dyng dong Ihdi nhieu loai hinh N L khac nhau nham nang cao hieu suat sii dung v i b i o toan N L , dong thdi dua ra g i i l phap cd hp thong mang ten gpi (Integrated Community Energy Solulions- ICES); d u k i l n den trudc nam 2050 se hoan t h i n h doi radi chinh sach, thdng tin va ky thuat [4], [5]
Doi vdi cac n u d e khu vuc EU Ip trinh d i n nam 2050 se g i i m thieu phat thai^ Carbon, tiln h i n h toi u u hda su dyng cac nguon N L truyen thong, quan lam d i n viec dau tu cho nghien cim sii dyng mgng ludi N L da dang [6].
Trong nghien ciiu he thong mgng ludi N L vdi c i c khai nipm nhu vi ludi (Micro grird) [7], nha m i y dien ao (virtual powr plant) [8], he thong dich vy cung u n g nang lugng [9], he thong nang lugng thdng minh [10], tiianh cdng nhat p h i i ke d i n khai niem Energy H u b (EH) ciia Vien Cdng nghe Lien Thyy si Andersson vdi md hinh nhieu dang nang lugng khac nhau d u a c t i l n hanh k i t noi thdng qua khau chuyen hda, dieu tiel, luu Irti. Cac khau nay d u g c b i l u thi dudi dgng m a trgn vec t a nhu cdng thirc 1.
Nguyin Thanh Ha vd Dtg Tap chi KHOA HOC & UUINU N U H J J
Hinh 1. Cau true ca bdn cua w
c,. JP ' (I)
Trong dd c,j la cac yeu to kit noi bilu thi moi quan hp giiia NL dau vao tgi mil tini ) vi nang lugng dau ra tgi mil j . ?{;,.,„) nang Iugng dau vap liic dau, \^i, „) nang luong chuyen hda daura.
Hinh 2. Mo hinh trung Idm ndng lucmg EH
Md hinh EH hipn dugc rdiieu nghien ciiu de cgp din nhu: [11] tiln hanh phan lich mo hinh he thong da nang lugng dua tren khii niem EH, [12] thill lap phuang trinh trang thii ciia khi tu nhien va hp thong dipn hon hgp, [13]
xem xet dua tren mo hinh EH cua thill bj tich trir dien nang dua ra phuong phap toi uu phan dogn theo ddng thdi gian va xic dinh dugc cau tnic toi uu cua EH. Nhin chung cac phugng dlpn nghien ciiu vl mgng ludi NL tiidng qua khai ni^m EH dl dugc phan tich
i hinh mgng liedi ndng lucmg EI
tugng doi cu the. Tuy nhien, khong dupc coi nhe den van dl hieu suat - ton that NL trong he thong Ngoiii cic van dl da dugc gidi thieu.
d tren, vipc xem xet md hinh hon hop cung cap NL vi md hinh nhu cau sir dung NL ciiiig dugc dl cap din trong nghien ciiu [14] nhu (mixed energy model) ILVSA-WCE3, IPAC, POLES va rad hinh HOMER. Cic mo hinh niy de dang giai quyet cac van de ve kinh te, ky thugt, cimg iing vi nhu cau ciia he Ihong.
Tuy nhien, cac logi hinh nay d nhirng ITnh vvc khac nhau, thinh tyu khac nhau can phai co nhiing budc tiln hinh tham dd. Do dd, nghim Cliu nay chii ylu ^ trung gidi thi§u may van « ca ban vl chuyin hda, phan phoi, lim tru, ton tiiat ciia he thong va dua ra md hinh NL d\ia tren phuong phap udc lugng va toi uu hda.
Cich tilp cgn vi giai quylt van de nhu sau^
Dau lien, liln hinh phan tich co ban cua mo hinh EI, tir do xem xet eic co sd de de xuat xay dyng hoin thien sa do da NL cho khu vyc do Ihi thdng qua vipc thilt lap md hinh dong chay NL va cac khau trong qui tiinh chuyai hda NL. Mo hinh quin ly NL doi vdi khu vyc do till d trgng tiiai tinh va ddng dupc gic"
tiiipu d myc 4; trong dd, phuong ph^ aoi;
lugng dugc sir dung trong nghien cihi nay
nham danh gia long hpp mo hinh da nang
lugng khu -vuc do thi vdi tiinh tu bao gom S
budc. Cuoi cimg, mpt so danh gii vl cac npi
dung dii thuc hipn va rapt so goc dp can tiep
1 nann n a va tJtg p cm p - n u A n v - m. L-tJiNu iNunc.
tye dugc md rgng nghien cuu dupc gidi thieu dmyc 5: "kit lugn".
DAC TINH CUA ENERGY INTERNET Myc tiey ciia EI chii ylu thda man hai ylu to kinh te va dip img nhu cau ciia ngudi sir dung. Md hinh niiy de ding nang cao do tin cgy, Iam giim 6 nhiem mdi trudng, thiic day su phit trien ciia cac hp thong su dyng NL ragt each toi uu, nang cao on dinh, vi thuc hien md hinh sii dyng NL hipu qua [15].
Dgc tinh ciia he thong da NL dugc the hipn cu the d 3 phucmg dien sau.
(1) Dudi gdc dp cong dyng, he thong su dung nhieu dgng NL Iam da dang su lua chgn, xuat hien nhu cau dieu tiet NL.
(2) Dudi gdc dp phyc vy khich hang, can dgc biet quan tam den nhu cau su dyng hang ngay cua phy tai
(3) Dudi gdc do mang ludi NL, can day manh sy phat triln ky thuat ciia nhieu logi hinh nang lugng, giim gia thanh, dong thdi nang cao dugc hieu suat cung cap NL.
THIET LAP MO HINH EI CHO KHU VUC DO THI
Cimg vdi su gia lang ciia cic nguon NL phan tan & he thong dien nhipt kit hgp (combined heating and power-CHP), cac he thong bgm nhipt, dilu hda vi nhilu iing dung khiic sii dyng NL dipn, nhiet, khi..w. Hipn nay, qui trinh san xuat, chuyen doi, luu ti^, dat ra nhilu yeu cau ma NL truyin thong khdng dap ling dugc.
Dien nang la dgng NL chilm ty lp cao, tilp dd la khi dotty nhien, tiian da...[16] NL dien vdi chat lugng di^n nang cao, dac tinh truyen lii xa, hipu suat chuyen hda cao, it phiic lgp trong qui trinh sii dyng, day la dgng NL toi im mi cac dang NL khac it so sinh dugc. Do dd, NL dipn trong mo hinh nay ddng vai trd trung tam.
Hipn cd nhilu logi md hinh NL thdng qua mo phdng vi thuc nghiera. Tgi rad hinh nay cd the xem xet vipc long hgp cic dang NL dipn, nhipt ndng, nhipt lanh [17]. Md hinh dudi diiy cho thay sy kit hgp ciia cic dgng nang Iugng lam tang tinh on dinh v i giim tiiilu nhiing tie hai khdng mong muon cua mdi tmdng (hinh 3)
„„.
N L S.nh hgn N L i i U M
M»,,El«4inS B l ^ V n g n g . *
i n ^ T K K i d i t D i t n n i n s T T Kh
H ( U . i . | d . Dien ning
z t s
, , NL ni chit thai l H « n i n g luyng N L l 4 i j j a _ * .
• " " -
-rsr
^».
H t i h l n t * .
^
— * • P h v m i khu vift
^ B
Phiftal
, J . L K « . « - ^
Hinh 3. Sa do he thong da nang lugng khu vife do thi
XAy dipig mo hlnh linh hoat cdc ddng chdy ndngluang
Dua tren nhiing phan tich vl md hinh he thong da nang lugng d tren. Mo hinh ddng chay NL dugc xay dung thdng qua he thong mieu ta qua dac tinh cua khau phat, chuyen dot, tmyen lii, tich trir v i sii dung (hinh 4).
f^5 hmh hoa dbae chay NL cu> ! " ^ ™ '^'^^ '''"^ *^ ]
' dAng chay NL
" 1_
1 Xfly dimg mjiig
rKi.-"^ i
"V
1
H
l~C :- r
Chuyen hoa NL 1 Phin phii NL
T.ch us NL j Si. dgng NL | Quan ly NL ' Hinh 4. Cdc khdu chuyiu trong phuang phdp
thiit lap mo hinh dong chdy NL
Md hinh ddng chay NL chu ylu gora 3 ylu to lan cau tiianh: NL (energy), thilt bi (device), thdng tin (information), Thdng qua 3 ylu to nay cd thi thiet lgp duac mo hinh ddng chay NL ciia khu vuc do thi nhu hinh 5:
Hinh 5. Mo hinh ddng chdy NL cua he thong da NL khu -virc da th]
Phan tich md hinh tren can dl cgp den khai
niem NL hiiu cdng va vd cdng, tir do cho thay
(3) cd till dling hai khai nipra nay d l b i l u Ihi raiic dp hieu q u i ciia moi dgng N L :
E = E,+A„ (2) Trong dd. E^ la N L cd hipu qua. An la N L
khong hipu q u i .
Qua trinh chuyen h d a the hien theo p h u a n g trinh sau.
E„, A^i,P^, + A^P^+A^^^^P^^
^ K A.P,.
Trong dd: q la tri so hieu suat ciia q u i trinh chuyen hda N L ; Eom la N L dau ra ctia thiet bi;
Pcoid, Phoi, Ppaivsr, Pm l i luoug chuvcn hda dau ra ciia cac dang N L ; A . .la t n so h i m lugng ciia N L dau ra va dau vao.
Xdy dirng qud trinh chuyin hda NL Ddng chay N L cd the phan thanh N L dau v i o , nang lucmg thu hoi va ton hao N L va cac dgng N L khong giong nhau. Doi vdi q u i trinh chuyen hda can p h i i sap xep phan logi theo cac q u i trinh: Chuyen hda, phan phoi, tich trii va sau dd Ihiet lap qua tririh chuyen hda doi vdi md hinh thilt bi N L .
Ngoai ra, N L da qua su dung ciing t h u c hien qua trinh chuyen h d a N L thdng qua cac thilt bl nhu den dien, khi ndng,,.
C i c t h i l l bi N L d tren cd cac khau N L tirang ling ciia nd. Thiel bi quan ly N L d u g c dmh nghia la hp thdng quan ly toi uu (he thdng quan ly NL ciia vi ludi), thdng qua thiet bi, hiim Iuang N L , so Iugng, toe dp, dien a p . . . , cac khau n i y d u a c the hipn d hinh 6.
Chuyen hfiiiNl, DOM Nl < huvJn TliohftiNLI„
I) Kh^tt chu)'^n limi .SL
•Iflng luijnE Jfin hao l^lo
hi KhSuilch iritvi phdn phoi SI.
Hinh 6. Cdc khdu chu yeu trong qud trinh chuyen hdaNL
TOI U U H O A E H T A I K H U VLTC DO T H I Khi tong hgp cac dang N L , la cd t h i nang cao duoc c i c chi tieu, kinh t l , dp tin cay, g i i m
thilu d nhiem mdi t m d n g , tang khdng gian loi uu ciia he thong T i i lipu [18] cho ta biet cac Iham so dieu khien doi vdi he thong niiy, bao gom nhiet dd, ap luc, luu Iugng... cac tham so nay d u g c tien hanh toi uu hda va s6 Iam giam g i i thanh ciia he thong. T i i lieu [19] ^ thanh lap ragt rad hinh he thong bao gom cac dang N L nhu- khi dot, N L sinh hpc, NL m|t trdi va t i l n h i n h quiin li loi uu cac dgng NL dau ra bao gom Idii, nhiet va dien. Tai liSo [20] sii dung thuat loan di t m y i n va mo phdng Monte Carlo de tinh toan toi uu hoa md hinh n h i l u dang N L khac nhau. Hien nay
•viec loi uu hda he thong nhieu dang NL co rat it cac nghien ciiu xuat p h i t tir gdc dp loi uu tinh v i dpng H a n niia doi vdi md hinh toSi hoc ciia ddng c h i y N L , cd till xem xet toan bp he thong chuyen h d a N L ragt each toi uu, vi vgy can xem xet d i n hai md hinh niy.
M o hinh q u a n Iy toi m i NL d t r a n g thai tinh Quan ly h e thong N L trong khu vuc do Ihi o trang thai linh chii yeu la quan tara den van de hieu suat sii dyng va c h u y i n hda NL, lien hanh nang cap thiet bi, toi uu ky thugt, nang cao hieu suat c h u y i n doi N L va sii dyng 6 trang thiii tinh. Chi phi phuang i n nang cap va cai tgo ky thugt (C) dugc b i l u dien qua bieu tinic sau-
C'Y.nD,) (4)
Trong do D|j li NL sir dyng hoac NL chuyen
hda cua mgng ludi NL Ket hop dieu kien CM bang h vil g, tir thuc nghiem ta cd:
/i,(Z),j) = 0,/ = l,2,...,i
g (D,)<0,j = l,2, .,Z,
(5.6) Trong dd / v a s b i l u thj lugng can bang va khdng can bang ciia N L chuyen hda hoac sir dung; I v i j tham so b i l u thi qua trinh chuyen h d a N LQua phan tich tren ta thay yeu cau dat ra la chi phi cho phucmg an nang cap v i cii tgo Ity thuat phai dgt gia tri nhd nhat. Qua trinh linh t o i n t h i l t ke can chon Iya d u g c phuang an 3e thyc hien q u i n Iy toi im.
Mo hinh q u a n Iy t l i u u NL d t r a n g t h ^ dong Ap dung y tirdng toi uu loan cyc va toi uu cue bd, thong qua hinh thiic khdng giong nhau va
INguyen l nanh Ha va Dig Tap chi KHOA HQC & CONG NGHE 166(Ub) iii - U 8
chii dpng khong chl ddng NL ti6u chuan.
Quin ly tdi uu dgng chii yeu quylt dinh d vi§c lua chon mo hinh, thilt kl du bio, vgn hanh thuc te va dieu dgng toi uu 4 bp phan, mang tinh tuan hoan, bao gom:
1/Quyit dinh md hinh. NL phan tan, phy tii, tich trir NL kit noi hoac tach ludi thi thong tin ciing thay doi theo. Hp thong dilu khien cung can Cli v ^ su thay doi thdng tin dl cd thi ty dpng thay doi kit cau, quylt dinh md hinh vgn hinh tdi uu.
2/ Quy hoach dif bdo. Can cii dac tinh him lucmg cac dang NL va cau thanh ciia phy tai dien, nhiet, Ignh, cd thi thdng qua mgng Naron de dua ra du bao ngSn hgn hoac dii hgn; dua vao ket qua du biio, kit hop vdi him myc tieu san xuat, tinh toan quy hogch du bio cho he thong.
3/ Vdn hdnh thiic tS. Giira kha nang cung cap thyc te va nhu cau cung cap cd sy khac nhau, hon niia giiia cac logi hinh NL khong giong nhau thi qua trinh chuyen hda ciing khic biet.
Thong ke khic nhau vl mgt nhu cau quylt dinh dilu chinh toi im ham muc tiSu.
4/Biiu do toi uu. Dya tren ca sd du bio va vgn hanh thuc te ca bin tren, tong hap cic dilu kipn van hanh on dinh cua he thong, tien hanh dilu dp cung cap NL cho thilt bj chuyin hda va sii dung NL cho phu hgp vdi ham myc tieu.
NGHIEN CUU PHU'ONG P H A P U6C L U O N G
Hp thong da NL khu vuc do thi la mdt dgng hp thong van hanh phi tuyin, dugc mieu ta qua hp phuang trinh vi phan. Tinh toan on dinh thdng qua vipc lugng hda chi tieu dinh tinh, cic gia tri chuyen hda duac xac dinh trong khoang tir 0 den 9.
Doi tuang udc lugng ciia hp thong da NL khu vuc do thi bao gora 4 loai- NL, thilt bi, thdng tin vi h? thong. Chi tieu danh gii gom 7 ylu to bao gora tinh hipu qua cao, tinh on dinh, tinh an toan, dg tin cay, tinh kinh te, chat lugng vi tinh chinh xac - hinh 7.
Ve eg bin tong kit danh gii vl hp tiiong NL chii ylu thdng qua tor uu cac chi lieu kinh te ky thugt vdi ham muc tieu phiic tap, dau tien thong qua md hinh lugng hda sau dd sii dung
ciic chi tieu ky thugt khac de tiph loan loi uu Danh gii long hgp md hinh da NL khu vyc dd thi trinh ty bao gom nhu sau:
1/ Tliilt lgp md hinh danh gia tong hpp
Hinh 7. He thong ddnh gid EI khu -vuc do thf
2/ Dua ra cac chi tieu tinh toin thdng qua xic dinh cac chi tieu toi uu cd gia tri Idn, chuyen hda cd gia tri lir 0 den 9
3/Tilnhanh i£inhgiarriptso dii tieu quan trpng 4/ Tiln hinh dinh gia mdt muc tieu trong so cic muc tieu quan trgng sau dd quyet dinh gii In ciia chiing
5/Xac dinh gii til toi uu ciia kinh te va ky thual A = o\B^ + oi^B-, + eo^B^ + oi,,B^ (7) Trong dd A bieu thi tong hap gia tri toi uu cua kinh te ky thugt, Bi bilu thi gia tri cua logi NL (bao gom chi tiSu chat luong, chi tieu kinh le NL), B2 la phi trang bi thiet bi (bao gom chi so hipu qua thilt bi, chi phi d^u tu kinh tl thiet bi); "B, la phi thdng tin gom chi tieu chinh xac thdng tin; B4 la phi logi hp Ihong (bao gom tinh an toin, dp on dinh, do lin cgy, tinh hieu qui).
KET LUAN
Bai bao da thio lugn 3 van de: Dinh gia, toi im v i dua ra md hinh h$ thong da NL khu vuc do thi. Phuang phip toi uu trang thai dgng vi tinh ciia hp thong dugc thilt Igp vi danh gia bdi hp thong cic chi tieu duac thuc hien lugng hda timg budc cac dang NL khdng giong nhau, tir dd tiln hinh danh gia phan lich tong hap cic khiiu sii dung NL bp phan va long till.
Cung vdl viec hinh thanh he thong NL gom
nhilu dgng NL khic nhau, thi tmdng NL
Cling tirng budc hinh thinh va phat trien cic
van dl mdi. Thi tmdng NL can phai tang
cudng vipc cung cap c6 hipu qua cho phy tii
Nguyen Thanh Ha va iJtg 1 ap cm is.nuA n y u oc L
va thilt lap dong nhat co che, tang cudng xiiy dung moi lien hp giua nhu cau v i gia thiinh NL. Dilu phoi lot t^ lp NL, lam giim tinh hinh bo sung dan xen, thuc hipn nhieu mgng ludi Cling phuc vu.
T A I LIEU THAM K H A O 1 RifkinJ (2008), "The Uurd industrial reolution", J.
Engineenng & Technology, 3(7) pp.26-27 2. SUN Hongbin, GUO Qmg lai, PAN 2Energy Intemet: Concept, Architecture and Frontier Outlook. Automation of electric power system Vol 39 No 19 Oct 10, 2015
3 Congress of US Energy independence and security ACT of 2007[EB/OL]
htqji/Zwww.gpo gov/fdsys/pkg/BILLSl 10hr6enr/p df/BILLS-110hr6enrpd.
4 Natural Resources Canada, Integrated community energy solutions- a roadmap for cation[R/OL] 2009-2015.
5 Govemment of Canada, Combining ou enegies- mtergrated energy system for Camnadian commission
6 European Commission Energy Roadmap 2050[B/OL]2015
7 Lasseter R H (2001), "Smart distribution: coupled microgrids", J. Proceedings oflheEEE, vol. 99(6) pp,1074-1082.
8 http./Zwww.fenixprojectorg
9. Dugan R , McDermott T E , Ball G. (2001),
"Jplanning for distributed generation", J IEEE Industry Appbcations Magazine, vol 7(2) pp 80-88.
10. Wang Ming Jun (2010), "Smart grid and smart energy resource gud", J. Power system Technology, vol 34(10)' pp.l-5.
S U M M A R Y
OPTIMIZE M O D E L A L S O U S E D F O R O F E N E R G Y U R B A N A R E A S
11 Krause T, Andersson G, Froehlich K, el al (2011), "Multiple-energy earners, modeling nf production, delivery, and consumption", J Proceedings of IEEE, voI.99(l), pp 15-27 12 Geidl M , Andersson G. (2007), "Optimal powi flow of multiple energy carriers", J IEEE TransacUm on Power Systems, vol 22(1): 145-155.
13 Geidl M. Andersson G. (2005), "A modeling and optimization approach for multiple eaqpgl carrier power flow[C]//Power TecH™
IEEE. Russia: IEEE2005, pp, 1-7.
14, Koeppel G, Andersson G (2009), "Reliability modeling of multi-carrier energy systems", J.
Energy, vol. 34(3) pp. 235-244.
15 Yu Yixin. Qin Chao (2014), "Expatiation on the basic ideas of smart grid", J. Scieniia Sinica: Informalionis, vol 44(6): pp 694-701.
16 Jiang Y I , Liu Xiaohua, Xue Zhifeng et al (2004), "Sudy on ECC index of energy conversion system", J. Energy of China, vol 26(3), pp 27-31 17 Ju Ping, Qin Chuan, Huang Hua, et al (2012),
"Reasearch trends of power system modeling greated to smart gnd", / Automation of Eleclric Power Systems, vol. 36(11). pp. 1-6.
18. Pirouti M, Bagdanavicius A, Ekanayake J et al (2013), "Energy consumption and economic analyses of a distnct heatmg network", J Energy, vol. 57: pp. 149-59.
19. Rubio-Maya C (2011), "Design optimization of a polygeneration plant fueled by natural gas and renewable energy sources", J Applied nergy, voI.88(2): pp.449-457,
20 Zhou Z, Zhang J. Liu P. et al. (2013), "A two-stage stochastic programming model for the optimal design of distributed energy systems", J. Applied Energy, vol.103: pp 135-14, .
MANY TYPES
Nguyen Thanh Ha' , Pham Thi Ngoc Dung"
'Thai Nguyen University, •'University ofTechnology - TNU rj The traditional study of energy model was previously mentioned independentiy and individually, without other analysis assessed overall energy forms To improve efficiency and strengthen the coordination between different types of energy, the paper analyzed optimize usage patterns and sources of heat (hot and cold) and electric power applied to urban audience In which, the process of transformation, distnbution, storage, optimized energy management is considered under many different angles, thereby evaluahng the economics, reliability, efficiency and some benefits for the sustainable development of national energy system Finally, it gives some perspective and appropriate recommendations based on the development situation and the state of current energy use Key words multi energy system, optimization, modeling, universal flow model, evaluation Ngdy nhdn bdi: 11/4/2017; Ngdy phdn biin: 21/4/2017; Ngdy duy$t ddng: 31/5/2017
Tel: 0913 073591. Email: [email protected],
