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Tiiu ban Cdc Khoa hgc vi Trdi ddt ISBN 978 604 913 016 ^ BlTC XA MAT TROI VA GIO TAI MOT SO DIA DIEM • • • • • TREN LANH THO VIET NAM SOLAR RADIATION AND WIND AT SEVERAL LOCATIONS IN THE TERRITORY OF[.]
Tiiu ban: Cdc Khoa hgc vi Trdi ddt ISBN: 978-604-913-016-^ BlTC XA MAT TROI VA GIO TAI MOT SO DIA DIEM • • • • • TREN LANH THO VIET NAM SOLAR RADIATION AND WIND AT SEVERAL LOCATIONS IN THE TERRITORY OF VIETNAM Le Van Luu, Le Vict Huy, Pham Xuan Thanh, Hoang Hai Son Vien Vat ly Dja ciu 18-Hoang QuIc Viet, Ciu Giiy, H i Ndi Email: bhson(a;igp-vast.vn Tom tat: Tir nhirng ndm 70 ciia thi ky truac, du trfr ndng lugng hda thgch tren todn thi giai da ddn cgn kiet, diing ndng lirgng di phdt diin, se phdt thdi CO2 vdo quyin, Trdi ddt ndng lin, hdu bj biin ddi, cdc rid ro cho lodi nguai cdng trdm trgng Vi vdy, tir ddu nhirng ndm 80, hdu hit cdc nhd khoa hgc trin thi giai, bdt ddu khai thdc cdc sd lieu birc xg Mat trai vd van tdc gid, hiin cd vd td chirc cdc trgm mdi, vdi thiet bj cd tin cdy cao, liin tuc cdc sd lifu birc xg Mat trai tgi mat ddt vd van tdc gid a cao 60-7Om, di ddnh gid tiim ndng, ndng lugng birc xg Mat trai vd ndng lugng gid cho tuang lai Tgi Viet Nam, ciing da cd nhiiu di tdi khoa hgc theo hirang nghiin cim trin Abstract: Since 70s of the last century, fossil energy reserves around the world have gradually dried up, when to use that energy for power generation, that energy releases CO2 into the atmosphere causing global warming, climate change and ever-serious risks for mankind So, right in the early '80s, most of the world's scientists started to explore the available solar radiation data and wind speed, and build new measure stations with high reliability equipment which can continuously measure the solar radiation data at ground level and wind speed at 60-70m high, to evahiate potential solar radiation and wind energies for the future In Vietnam, there are many scientific topics under the direction of research KET QUA NGHIEN ClTU VE BlTC XA MAT T R d i Ngay tir diu nim 1980, Phdng Vit ly Khi quyen d i thyc hien de tai cap Vien Khoa hgc Viet Nam, m i sd 82.49.098, de tii cip Nhi nude nghien cim gid thdi ky 1998-2000, cic de tii chuong trinh nghien cim co ban, , de dinh gii ning lugng Birc xa Mat trdi tai mat dit vi gid d cao 40m tai Binh Djnh Mdt sd ket qui nghien cim die trung eho Birc xa Mat trdi, gid, dugc trinh biy dudi diy 1.1 Quan he giira true xa (S) vdi lugng may tren bau trdi (N < 2/10), [2] Khi lugng miy tren biu trdi N < 2/10, che phin bd cua Tryc xa (S) phy thude vio cao Mat trdi (he) v i sudt quyin (P) Chi phan bd Tryc xa (S) tai H i Ndi, duge the hien tren hinh 300 Hdi nghi Khoa hgc ky' niem 35 ndm Vien Khoa hgc vd Cdng nghe Viet Nam - Hd Ndi JO 20JO Hinh I Quan hi giua S{Q)vd'i //© va P s(©-) cai cm phut 1.40 10 20 30 40 50 60 "0 ; 0,722 - 0,764 0,675^ 0,721 0,625 ^0,674 0,550 - 0,624 80 90 1.2 Moi quan he giira tong cudng true xa (S) va thdi gian nang thang Mdi quan he giira tdng cudng tryc xa vi tdng thdi gian ning thing, tai hai diem Ling va Phii Lien, duge trinh biy qua he sd tuong quan r vi lech chuin cua be sd tuong quan dr d cic thdi gian khie Bdng I Hi sd tuang quan giira tdng cuang true xg vd thdi gian ndng vd thai gian ndng thdng cua Ldng vd Phii Liin [3] Ten tram Ky quan trac 9g30 12g30 15g30 9g30 12g30 15g30 Lang Phil Lien r 0,85 0,87 0,84 0,89 0,87 0,86 dr 0,05 0,04 0,05 0,04 0,05 0,05 r 0,44 0,75 0,78 (0,28) 0,50 0,53 ^r 0,15 0,08 0,07 0,21 0,15 0,14 Ghi chii: r - he sd tuong quan giira y = V S v i x = ^ dr = \\.-v^)/VN X VII IV r 0,61 0,77 0,78 0,70 0,64 0,54 ^r 0,12 0,08 0,08 0,10 0,12 0,14 r 0,60 0,57 0,67 0,60 0,57 0,67 ^r 0,10 0,10 0,09 0,10 0,14 0,14 SS - lech binh phuong trung binh cua r; N- sd nim quan trie 1.3 Moi quan he gifira True xa tu ngoai (Suv), nhin thay (Svi) va hong ngoai (SIR) vdi True xa toan dai phd (S), [4] Tryc xa phd (Suv), (Svi) va (SIR) SO vdi tryc xa toan dii phd (S) ludn ludn bien ddi theo thdi gian ngiy vi cic thing nim dugc the hien qua bang Bdng Ty sd giira Tnrc xg cdc viing phd so vai True xg todn ddi phd Thanh phan Sijv/S Sv/S S,R/S 9h30 VI VII VIII IX X 8 48 46 46 39 45 46 48 53 Thdi gian 12h30 VI VII VIII IX X 9 46 48 47 47 44 45 44 44 46 48 15h30 VI VII VIII IX X 8 46 46 45 39 46 46 48 53 301 ISBN: 978-604-913-016-8 Tieu ban: Cdc Khoa hoc ve Trdi ddt 1.4 Xac dinh he so phuong trinh Angtrdm-Prescott, [5, 10] Cac tram birc xa Mat trdi rit it so vdi cic tram gid ning Vi viy, eic nhi khoa hgc tren the gidi thudng diing phuong trinh Angtrdm-Prescott de xic djnh tdng xa noi cd gid nang Phuong trinh Angtrdm-Prescott dugc bieu dien dudi dang sau: XdQ XdQo XdSS ZdSSo = a-t-b- Trong dd: ^ dQ - Tdng xa ngiy tai mat dit, ^ dQ - Tdng xa ngiy tai gidi ban tren cua quyen, ^ d S S - Sd gid ning ngiy, ^dSSf, - Do dai Dya tren sd lieu tdng xa ngay, tai NghTa Dd tir 1983-1986, da xic djnh dugc cac thira sd a vi b Bdng Cdc thira sd ciia phuang trinh Angtrotn-Prescott Dia diem Versailles, Phip Congo NghTa Dd, Viet Nam Tac gia Durand Henry Le Vin Luu Chuoi so lieu 30 nim nim a 0,22 0,24 0,30 b 0,50 0,50 0,45 a+b 0,72 0,74 0,75 *Ghi chii: tir sd lieu Birc xa Mat trdi de ding chuyen ning lugng Mat trdi VAN TOC GIO VA NANG LUONG GIO TAI BINH DINH • • • • Nam 1997, Phdng Vit ly Khi quyen thire hien de in cip Nhi nude ve khio sit gid d cao 40m, bing thiet bj hien dai, ed tin ciy cao vi dugc xir ly sd lieu theo phin mem E99800-53 IBM Cic kit qua dugc trinh biy dudi day, [9] V(m,'s) 2.1 Bien thien toe gid theo thdi gian Tren hinh 2, dang bien thien tdc gid trung binh gid, theo thdi gian ngiy, eiia eic miia, deu cd dang gidng nhau, nhung khac ve tdc Tir gid den gid sing, ve miia He vi thdi ky chuyen tiep, tdc gid dao ddng tir 3,5-3,8m/s Ve miia Ddng, eiing khoing thdi gian neu tren, tdc gid xip xi 6,0m/s Tu 11 gid den 19 gid, eiia miia He vi thdi ky ehuyen tiep tdc gid ting din len tir 4,4-6,3 m/s Ve miia Ddng, tdc gid tang din tir 6,5-8,0 m/s, sau giim din xudng cdn 6,3 m/s Clor 10 12 14 16 18 20 22 24 Chuyen tiep Miia He Miia Dong Hinh Bien thien tdc gid trung binh gia ngdy (tai cao 40m) 1.1 Bien thien tdc gid theo thdi gian nam Tren hinh 3, dudng cong bien thien tdc gid trung binh nim, ed cyc dai ldn nhit vao thing 12 va cyc dai phu vao thing 7, cd hai eye tieu vio thing vi thing Nhu viy, tua bin phit dien manh nhit hi giira thing 10 den thing nim sau Thing 4, vi 9, 10 Uia bin phit dien thip 302 Hinh Bien thien tdc gid trung binh thdng Hdi nghi Khoa hgc ky niem 35 ndm \ 'ien Khoa hgc vd Cdng nghe Viet Nam - Hd Ndi 102010 ndm 2.3 Tan suat cac hudng va tdc gid cua chiing Tai Phude Hoa, Binh Djnh, ed ba gdc hudng chii yeu, hudng SW-NW chiem 53,5%, tdc dao ddng tir 2,7 den 3,7m/s Gdc NW-NE chiem 26,1%, tdc dao dgng tir 3,5-5,7 m/s Gdc hudng ENE-SSW chilm 19,4%, tie dao ddng tir 3,0-5,0 m/s Khoing thdi gian cdn lai 1,0%, tdc gid yeu vi ling gid, (hinh 4) North NNB NB HNB B ESB SB SSB S SSW SW 12.193 S.l 4.430 5.7 3.6N sa 1J31 4.1 1J2S 1.161 3-6 2.961 A J 8.470 5JJ 2.712 3.7 1J03 3J0 2.71& 2.7 9.688 3J0 wsw 21-7S3 * w WNW 1S.099 3.7 NW 3.2S9 i NNW l.%7 3 CALM 0.818 "'• Hinh Tdn sudt vd tdc ciia cdc hic&ng gid 2.4, Duong cong phan bd cac cap tdc gid (phan bd Weibull) Tdc gid li dai lugng ngiu nhien Dudng cong phin bd cic eip tdc gid khdng ddi xiing, duong Him phin bd Weibull duge xic djnh theo edng thirc sau: ^kYv^ f(v)^ \CJ ycj k-1 ^v^ exp Trong do: k li tham sd hinh dang, c la tham sd ty le, v vc; li tdc gid trung binh, v >0, c>0, k>0 Dya vio sd lieu tdc gid d cao 40m, tir 5/1998 den 4/2000, da xic djnh dugc tham sd c, k, eiing vdi eic die trung Ps/A (Mat ning lugng gid),VMAx (Tdc gid mang ning lugng ldn nhit), VMP (Tdc gid cd xic suit ldn nhit), (Tdc gid trung binh), vi a (Do lech binh phuong trung binh), (xem binh 5) 2.5 Tinh tdng dien nang nam theo tdc gid trung binh nam Dya vio sd lieu do, d cao 10m, 20m, 30m vi 40m de tinh profile thing dimg cua tdc gid, d eao 60m,V6o= 6,5 m/s [6, 7, 8] Theo cdng thiic Betz [11], tdng dien ning nim dugc tinh theo cdng thirc sau: E = 0,37x V xSxT, dd p/2= 0.37, p li mat khdng khi, v li tdc trung binh 3 Pa /A = nim, S la dien tich quet cua roto, p c r(i + ) 28.0 n k T = 8740 gid Khi diing tua bin 188.2W/m^ VESTAS(V9o-l,8MW) (S = 6362 24.0 V c(l + - ) m^), tdng dien ning li E = 0,37 x k