Nghiên cứu ảnh hưởng của hồ chứa trạm thủy điện thượng lưu đến hiệu quả của trạm thủy điện điều tiết ngày ở hạ lưu

i""'.*: rit::l::!: ltl:.:r,', i 'i:,' '.:: ii: a'.t Khoa hge Thrty Wi W$€f Nsrm co 01 tdn Giao s#ys 04 t&n Phd gioo stt ndm 2816 ViQn [rRoNG s0 NIAY] Thu ch0c mr/ng ndm T3 T9 mcyi Giai.phdp t6ng the cu|n cOng trinh da muc ti6u dieu tiet ngu6n nucyc tu s6ng HOng qua sOng DuOng Trin Dinh Hoi, Ng6 ThO Hwng, B_Ui Cao Cuong, olnsly"##ll#f.H cta viQc rhap rons kiet d6n cOng trinh th0y lEi tr6n s6ng H6ng rdrc d.png Nsuy6n nigq" eu!'nh; G;ian M?nh Lihh, ky thuat trons thier k6 va thi 3it'-Itrl3Jiilff TIg xr? Xuy6n' tinh Hung Y6n ry vrENrcro4HQC THUYLoT vIt'TNAM T6ng biOn tAp NguySn Vfi Viqt Ph6 T6ng biOn tflp TSng Dirc Thang Trin Dinh Hda T29 TrlI ThT Dodn DoSn TuAn Nguy6n Dang Vy Ding Hodng Thanh TrAn 86 Hoing thty son lcvi va vdn r6ns l'rt#t[,'niQn Nguy6n Thi Anh Tuy6t, Nguy-6n Vin Ghi6n Nghien cuu [o5n thiQn ghuong phrO,irrirr va xdy dqrng chucvng trinh tinh todn bi6n hinh mat cdt k6nh d5n sau bdng k6nh mOi tqi vUng tri6u & d6ng bang Nam Q0 cv o6i Krf r 6T ung vcri bien lU hdu D6 Hoii N3*, Nguy6n Thinh c6ng, }n?JIil,llft M ot s o ket q u a, 3'Y&tl,.3,T8rli?:n H:,i hut tram bcvm Nh* Quynh qua m0 ph_ong bing ph6n m6m Fluent va dO xuSt gidi phap cdi tEo OC frtit, Oudng hut tnEm bcym Nhu Quynh }.{guy5n Tung Phong Dodn The Lqi Xay durns tuat Du tinh bien o6i mua ron ruu vuc s6ns rrtSJ+ilJHAX T60 giai doqn 2015-2039 va gidi phap cit thich HQi tl0ng bi6n tflp Nguy6n QuOc Dfrng Nguy6n Ngec Quynh Trinh Vdn Hpnh Pcpf-t @swat m0 phong que trinh phdn hyy va lan truy6n thu6c trt* c6 luu vuc sohg Sakura, Nhat Bdn va ti6m ndng r^rng dUng & ViCt NuT cdt sOng Uy vi6n thudng trqc Nguy6n Thanh Bing Nguy6n Minh viet, vu chi Linh ung dt.lng mo hinh Tl4 T8Z Dinh Anh Tudn, Phqm Vdn Thu, Pham Song Hung, Nguy6n Hdng Long X6c dlnh v6n de qrian Nam - Campuchia l1i nguon nri&c irven bien g]oi Vig*t Bui Viet HtrnE Xacdinh caonhom nguy ccr gAy mdt an nirh ;g;b; ;;; khu vqrc dong chfnh sOng Da reo xugqchbu, ,a,J,3,?,,"J,U1*?fl,i'L? ry IrtuXiJJ;lI,x3X va TIO3 Dinh Dqi Gei, Phi Nggc Tuin, Nguy6n Vdn Trang Nghi6n cuu dnh hu&ng c0a h0 chua tram th0y dien thugng luu den hiQu qudLc0a trEm th0y diQn di6u ti6t & luu Thu ky toi so?n TIIZ Dsnh sia tinh hiou qua c0a Rhizoprrx:l;I;;1Jfl,[3 fruticans gidm song tau thuyon gay 112 Vfr Th1 Tinh Gi6y ph6p xu6t bfln sO I4SOIGP.BTTTT ngiy 28 th6ng nIm 2010 In t4i: COng ty in Thriy lgi Li Wnh Trung TIZO Quan hC gicra thiCt hqi kinh te rrzs Dan! sia h *I,#.,IHX*ff1"r?Jlt??i#,il H?lIS:fl vd dao tao chuyon giao ap dung tion b0 khoa hec c6ng nghC phuc vq.r sdn xu6tn6ng nghiQp Nguy6n Tung Phong, TrAn Dwc Tritrh, LO Thi Hong Nhung vcvi muc dO ng0p tut thi cUu ANn uUouc cua HO cnrlr rRAM THrry,DrEN THUqNGI,Uu ?EN HrEUpuA cfia Tn4M THUvETEN orru rrrr xcAy o HA r,tlu NGHTEN Nguy6n Vin Nghia Trudng Dqi hqc fh*y lqi T6m tit: Thuy diQn nhd clang cluqc ildu tu xdy dqng nhiiu tqi ViQt Nam, phdn l6n cdc trqm thuy diQn nhd ndy ldm viQc ffAn citng hQ thting bQc thang vd xdy dttng dwdi dqng BOT Chd aO tam t,i€c cila cdc trgm th*y di€n phia thuqng bu dnh hu&ng trrc fi6p d1n hi€u qud ndng luo ng vd kinh ft cria trqm th*y diQn phia hq lru M*c d0 dnh hudng dAn di€n ndng mila kh6, diQn idng thd.nh phin phrt thu\c vdo dung tich vd hinh thrhc diiu tiiit cia trqm thtiy diQn phia thuqng tm H6 chtia ct)a trqm th*y diQn d thuqng bu cdng l6n, hi dtiu tiAt cdng ddi hqn thi m*c dQ dnh huhng cdng cao Do ttnh todn *a piang rin pnk nw ra" ni"n iii,, na riry ri -vQy, vdn hdnh d\c tdp nhiim dem lqi hiQu qud ktnh $ cao hon Tir khda: _Trgm thfi-y iliQn, bQc thang, hiQu qud ndng lugng, iliQn ndng mlta khA, iliQn ndng thdnh phdn, cao iti6m mila kh6, itiiu tidt ngdy ,iir Summary: Small hydropower construction investment is developW in Yietnam, most of these small lrydroelectric stations working on the same river system and buitt under BOTform Working mode of the hydroelectric stations at upstream directly affect the energt fficiency and economy of hydroelectric stations at downstream The affects on the power of dry season, component powers depending on capacity ond regulatory forms of upstream lrydroelectric stations The larger reservoirs of lrydroelectric stations at upstream, the longlerm regulation ffict the higher influence Therefore, in the simulation calculation should coordinate inter-reservoir operotion instead of operating independently in order to bring greater economic efiiciency Keywords: Hydroelectric plant, the same river systemt poto€r efJiciency, power of dry season, component power, pick of dry season, daily regulation GIdI THIEU ning cria HiQn viQc xdy dWrg cdc tr?m thuy diQn (TTE) nh6 dang phdt tri6n tr6n khap citc vung \ l , t A , mi0n tr6n cd nudc, phdn lfu la c6c TTE nh6 c6 hO di6u titit d€m Trong sd d6, c6 rdt nhi6u c6c TTD dugc xdy dpng tr6n mQt bflc thang nOi ti6p nhau, Trong qu6 trinh thitit kC lpa chgn circ thdng sO ctia c6ng trinh cflng nhu cdc TTD di vio van hanh thi c6 rdt nhi€u \ A ,A n a r ' ' y0u tO anh hucrng d6n cfuc phan diQn Ngiy nhpn bii: 19/1012016 Ngiy th6ng qua phin bipn: 07 11212016 Ngiy duyQt dlng: 2611212016 TTD O ltnr nhu: chiS dg ldm TTE o thugng ltnr , ddc tinh thi6t cdc viQc c&a cdc bi cria cdc tO m6y thtry diQn, t6n thdt cQt nudc c6ng trinh dAn nudc, nhu cAu dung nudc thugng-hA lmr, ddng chiy m6i trudrng, Trong s6 cdc y6u td tr6n thi crre aO lam vigc cta cdc TTE o thugng ltru c6 6nh huong d6ng k6 Khi citc TTD phfa thugng luu v0n hanh thi ctrc og lam viQc chring sc enh hucrng r6t lon dOn hi0u qua dien nlng cira cdcTTD phfa hp luu DOi voi citc TTD co hd diAu tiOt dei han ft diAu tiiSt mira trd l6n o thugng ltru di vio v4n henh thi sE lam t5ng sin lugng dign mta kiet tll cfing nhu dien n6ng gid cao di6m mira kho ctia cdc lr A TAp CHt KHOA HgC VA C0XC ruCHE rHuy r-Ol Sd 36 - 2016 103 TTD phfa dudi Trong trucmg hgp citc TTD tr€n cung bOc thang dAu c6 h6 chria di6u titit thi viQc c6 hay khong TTD & thuqng luu khdng ldm thay doi d6ng kc s6n lugng diQn mtra kiet ctia circ TTD o ltru cfing nhu cria toin b0 bOc thang Tuy nhicn cdc TTE di6u tict & thugng ltnr c6 lim thay d6i diQn n61g cua cdc khung gid cao di6m-trung binhth6p di6m (c6c thenh phAn diQn ndng) cta c6c TTD cli0u tiOt cv ltnr hay khong la cdu t , I hoi cdn dugc gi6i dep Bei b6o tflp trung nghiOn ctnr enh hucmg ctia cdc ho di6u titit & thugng luu d6n cdc thenh phAn dien nrng cria TTE di6u ti6t ngey o phia hp luu, ti6n hanh xdy dung chucrng trinh tinh todn md phong qu6 trinh vOn henh d6 danh gia srJ thay d6i dipn ndng va thinh phen dien ndng cdra cdc h0 thtiy dien & ltnr c6 vi kh6ng c6 ho thugng luu Mo hinh todn dugc sri dung d6 tfnh to6n ki6m chimg cho m0t vdi hq th6ng bpc thang thuy diqn nh6 e viet Nam, d6 c6c TTE o luu la c6c tr?m thuy dien co h6 diou ti6t dom rct qua tfnh to6n md phong cho th6y, h6 chua thu$g lmr co dung ticlr-di€u titit thi sc lam tdng sin luqmg dien mtra kho cf,ng nhu dipn n[ng gi] cao di6m mtra kho cho trpm thuy dipn phfa dudi PhAn diqn ning cao di6m mtra kho cria TTD phia duoi tlng thcm phu thuQc vdo dung tich diAu tiot cua ho phia tron d6ng thdi phu thuQc vio c6ng su6t lep d6t ctra TTE phia du6i Vi vfly, d0i vcri he th6ng bflc thang dang qu6 trinh thi6t k6 cfing nhu vAn hAnh thi viQc tfnh to6n phOi hqp c6 xdt cl6n ch6 dq lam viQc ctia ho phfa tr6n s6 giqp danh gie xdc dinh hgp l)7 hcrn cdng su6t lip d6t cho TTE phfa hp lrru vi M0 sixn roAN vA u6l rUqryc NGHrcX CTIU Doi tugng nghi€n cuu bai b6o niy li c6c TTE c6 hO di6u titit ltru h9 th6ng bflc thang lem viQc h9 thdng diQn luc Phia thugng ltru cdc tram niy c6 thd c6 hO tli6u titit ngey hopc diAu ti6t mira 104 TAp cH[ KHoA Hgc vA cOruc rucHE rH0y r-or Trong bai b6o ndry, mo hinh to6n dugc l0p cho viQc mo phong qua trinh vOn hanh cria cdc TTD nho di0u ti6t dom ldm viQc bOc thang cdc TTD li trpm thuy dien tu nhdn ddu tu n6n him muc ti€u cria bai toan la DOAI{H THU tt b6n diQn nlm dat gie tr[ lon nh6t Vi le TTD diAu ti6t d6m n6n chu ky didu tiiSt ph6t diOn di6n tron g 24h, vOy de dat doanh thu ndm ltu nh6t thi doanh thu hang phai dat gietri lcrn nh6t 24 24 8,.g, =) (l) = B- 1u, max I O &y: B li doanh thu til bdn dipn tong mQt nga)d0m; Bi ld, doanh thu tt b6n dien thu dugc gb tht i; Eivi& mn luqt h dien n6ng thucrng phdm va gi|bdn diqn grd tht i;24h sO gid rong Ei = N,l, (2) r/, vd ri l6n luqt ld cong sudt trung binh va thoi gian (eio) tucrng rmg vdi c6ng su6t ph6t l/, MAt kh6c ddy ld cdc TTD nh6 c6 cong sujt nho hon 30Mw hoflc c6ng su6t trung binh circ trym tr6n b0c thang nh6 hcrn 30Mw non theo qu)' dinh so I8/2008/QE-BCT cria Bq c6ng thucrng gi6 b6n diOn sc dugc 6p dung bi€u gia chi phr tranh d,ugc [6] Gi6 bfu diqn dugc tinh theo cdc kht*g gi& cao ditim-trung binh-ttil5p diOm cho ci mta kho vi mta mua, di0n nrng du vio mua mua Gid cao di6m dugc quy dinh t& gh30 den 11h30 sang va tu l7hdOn z}htoi, gid thdp di6rn tid 22h c16n 4h sang hdm sau, cdc gid l?i l&,=" gio trung binh, ngey cht nhAt kh6ng co gio cao di6m vdi bi6u gilbtu diQn theo quytit oirr, sd 14579/QE-BCT ban hanh ngey 3anzlza$ ap dwrg cho n[m 2016 thi gia bdn diQn gid cao di6m mira kho (^-2800d&wh) h cao vugt trgi so voi citc khung gid cdn lai (,-.610il1$,yh) l7l.Do vay, ham muc ti6u (1) chuyiin sang dqng t6i rru diQn n[ng gid cao di€m mtra kho nhu phuong trinh (3) sau ddy Tra E:: s6 36 - 2at6 = Ij=l E:u = T"a I i=l N,t, =+ max (3) - vi N,tr, lAn luqt ld c6ng su6t tuorng trng (i:1+5) thri i khoang thoi gian cria khung gio cao di6m c6 cQt nudc th6p Viec h4 mpc nudc hO cu6i gicr cao di6m thf hai (20h) xu6ng bao nhiOu cdn c6n cri vdo hnr lugng nudc d6n hd cua h6m sau (Hinh 1) Nhu vay, d6 vfln hanh dtrgc nhu t6n ddi h6i phii c6 dg b6o chinh xdc lmr lugng nudc d6n cta ngey hdm sau t l , , DC dam b6o ph6t dugc dien nang tOi da vio gid th30 hO phii o mgc nudc ddng binh thuong (MNIDBT), vay c6c cao diOm thi thoi di6m tru6c khrurg gid kh6c hd sE tich nudc Ai5 frO dat MNDBT cho ph6t k€ titip DiAu niy s€ x, \ ,' v ,r , t X Y, atl 'lt co lqi v0 mflt c6ng su6t va diQn nang so vol vtgc q vilr hanh frO tu mpc nudc ch6t (IvtNC) 16n d6n MNDBT [5], nnat le d6i voi c6c fiam thty dien - \ - MNDBT 1m3/s) Qtd*u* zilrqiq-li J -f ttl-t- tz otl t3 t4 t4 24h 24h (a) MNDBT MNDBT zrt lqra-f tt lt MNC l zrt MNC l- -i - - o tl ,, (r) t3 1q.e*) ll t4 24h i l l 11l tl t3 tZ t4 24h (d) Ifinh 1: (a) So di fich nudc gid thiip diAm vd trung binh-phdt tiit da c6ng sudt gid cao.ctiAm (Q:Q); @ Ai6n thiAn mvc nudc hO Q:Q*; @) BiAn thiAn mttc nudc hO ngoykhiQ>Q*; @) gidnthiAnmvcnudchdtrongngdykhiQ