TAP CHl KHOA HQC & C 6 N G N C H ? C A C TRU''''ONG DA'''' HQC K V T H U A T • S 6 90 2012 KHAO SAT 6 N D I N H LU''''Ol PHAN P H 6 I KHI C 6 MAY PHAT G l 6 N G U 6 N K E P EXAMINING THE TRANSIENT STABILITY OF[.]
TAP CHl KHOA HQC & C N G N C H ? C A C T R U ' O N G DA' HQC K V T H U A T • S 90 - 2012 KHAO SAT N D I N H LU'Ol PHAN P H I KHI C MAY P H A T G l N G U N K E P EXAMINING THE TRANSIENT STABILITY OF DISTRIBUTION NETWORK WITH DOUBLY FED INDUCTION GENERATOR Phan Thf Thanh Binh, Nguyen Trung Trudng Dgi hqc Bdch khoa Tp H6 Chi Minh Nh^n ngiy 15 tii^g n5ni 2011, chap nhfin dSng thing nSm 2012 T6M TAT Sv thdm nh$p cOa cdc mdy phdt d}$n gid g&y dnh hutng lin 6n dinh lirdi di$n vd d\rqrc quan tdm nhiiu thirl glan gin d&y Si/ tin t^i cOa mdy phdt dl^n gl6 ldm bdl to6n trdo lu-u cdng suit si bl cdi bidn V6i' bdl todn 6n djnh, cdc thdng s6 ban diu phu thu^c vdo kit qud cOa bdi todn ndy Luin ph&n phil cd a$c thO Id kit ciu {ho$c v$n hdnh) h& Khi cSt ngin m$ch, cdc nOt Itrdi dlin cd thi s§ khdng cdn dux?c kit nil vdi Dliu ndy ldm cho cdch tInh in Olnh truyin ^6ng theo i^imng phdp si khdng hliu qui Bdi bdo trinh bdy cdch flip c$n tInh todn 6n dinh trin liriri f^dn phil cd DG, d$c bi$t DG gid lo^i DFIG vdi vide tich hiyp bdl todn trdo luv cdng suit vdo chwcmg trinh tInh todn in dinh cDng nhw xi> /y luirl bl c5 l$p thdnh nhiiu vOng sau dt ngin m^ch Md hlnh b^ dliu khiin DFIG cQng dUr?c dtra vdo chuvng tiinh tInh todn in i^nh Chuvng trinh cdn cho phdp khdo sdt dnh huimg cOe cdc yiu ti nhir thdi glan dt ngin m§ch, vi trI ngin m^ch tiri nguin DG, ti/ ddng I9I ABSTRACT The penetration of wind generation effects on the power network stability causes a lot of attention for current time The existence of wind generator makes some modificaSon of tracSSonal power flow problem This affects on the initial conditions of stability problem The distribution network is open loop (by design or by operation) When fault Is cut out, the buses In network may be not connected (directly or indirectly) This makes the traditional numerical c^ahulation for the power system stability ineffec^tive This paper will introduce the approach for calculaUng the stabiiity of dstributkin network with distributed generation (DG), In particular doubly Fed Indutijon Generator (DFIG), integrated with the modified power flow problem In this approach, the mcHMing of DFIG's controllers and the treatment of Isolated sections of the original power network due to fauH cut out will be considered The proposed program allows examining all tfie factors that vinit atkct on the stability of network such as the fault clearing time, the fault location, auto- recloser Keywords: Distributed generator (DG), Doubly Fed Induction Generator (DFIG) G i d l THI|)U c6 ngin m^ch, nhat la ngSn m^ch dau c^ic khio sat inh huing len in djnh lu« di?n CO DG duac quan tam nhiiu th« gian g i day Sv tham nhjp eua cic may phit di?n gio 14 diiu dang chu y hem ci Ly la cac DG gio khong CO cuon kich thich D I tao tir tmdng, chiing s8 hut Q tit lu6i di?n Nhu tnirnig hgp may phat di^n gio lo^i fixed speed, c6 s\r c6 nhu ngin m?ch, di§n dp dau luoi giim, mfit lu(?ngQlcms5du(tchuttirltt6i KotquilidiSn ap s i p tyc giim va c6 thi sS gSy raft In dinh Vdi cdc may phdt DFIG, tmh hinh se duoc cdi thien hon nhd b$ converter 'f^ "^'l ^ !^"8 " ^ " " ^ ^'^."?." P''!"^e '"l^P " " * ™ ™ " ' ^ ^ ^ •""I J^'" "! T '^' * " ^ •)" •"'"8 ^J^ ?"• "^^ '.= " ' ^ '^' mjch vong km Khi ngan mach ten diiong f"^- =»" " " '^ " ^ ""=''• "^ " " ' ™ "•"''™ '^ ^"^ " " ' " ' • Ve m6 hinh cua may phat DFIG, ton t?i nhiiu c6ng tiinh lien quan tcfi mo hinh DFIG khio sit 6n dinh.Tuy nhicn hJu het cac c6ng trinh khio sdt dIu cho 14 mo hinh b|c la day dii cho khdo sdt on dinh qua dO [4],[1],[2],[31 M$t so quan diim phan tich on djnh cua may phat gid dya tren phuong phdp gidi tich, gid thiet id di|n dp dau cue mdy khdng dli [1],[6] Dieu ndy khdng phi hop vdi th\rc S Vdi cac mdy phdt DG bom vao luoi phan phli, vi|c khdo sit on dinh 14 can thiet khong nhimg cho bai todn v§n hanh ma cdn cho bai todn thiit kl Vi|c chgn Iiia, phoi hop thdi gian TAP CHt KHOA HOC & CdNGNGH£ CAC TRU'dNG D ^ HQC Kt THUAT • S6 90 - 2012 cat svr c6 phi^ h^rp cd ve quan (fiem b i o v$ ro le lan on $ n h ludi di^n Lu6i phan phoi c6 d^c thu la k i t c4u (ho^c v ^ hanh) hb Khi cit ngin m^ch, cac mit lucd &.^n c6 thk se khdng dupe ket noi v6i Dieu n i y Iim cho each tinh hn djnh truyen thong theo phuong phap so khdng hieu qua Ly l i c i c vung b) cd l|ip sau c i t ngin m^ch, di$n ap c i c mit vung s\r CO se v^ tri zero Vdi ludi truyen tii, thiit k i kin, di^n ^ c i c mit k h i c kli6ng Ngoai ra, nhu [5] d l c$p, s\i t6n t^i ciia may p h i t di^n gi6 Iim b i i t o i n trio luu c6ng suat se bi cii bi€n Cac mit may phat dien gi6 du(7c khai bao nhu cac mit P.Q Tuy nhi€n cac gia it} P, Q c6 the se bj thay doi trfin ttmg budc ^ Vdi bai toin hn dinh, c i c thong so ban d^u phu thuQC vao ket q u i ciia b i i t o i n trao luu cdng suat Do viec tich hi^p b i i toan v i o chuong trinh tinh toan Sn (^nh la can thiet M H I N H T O A N C O A C A C M A Y P H A T DFIG Cac hS phuong trinh vi phan md t i m i y di^n ddng bg (ke c i bQ t\i dgng dieu chinh kich tii) dugic mo t i nhu [7] Khi x i y q u i thi thai gian qua dp stator rat nhanh nen chiing ta c6 the bd qua chiing [6] Nhu v|iy phuong trinh dpng hpc DFIG l^i ba phuong trinh la : ^ Xs = i [ - r o W ^ V + Toio>, ~ 6J^)£, • , X ^ ^ Lni Lr,L,-ho cim, di^n c i m t i n rotor, stator Ngoai c6n c i c phuong trinh d ^ s6 m^ich stator v i hai phuong trinh li6n k i t m ^ h ngoai vdi lu6i dien Anh hudng ciia b$ dieu khien DFIG c ^ dugfc luu tam k h i o sit Sn djnh: >-Hi Hinh 5(5 diiu khiin ciia DFIG Dau ciia bp dieu khiin cdng s u ^ t i c dyng l i / ^ dupe so sinh vdi dong rotor i^ ciia m i y phit (£$n gio Bp (£eu khien dong rotor vdi thdi gian isip \m% rat nhanh chi khoang 1ms Con doi vdi bO dieu khien cdng suat thi thdi gian dap ung la 10ms Dau ciia bp dieu khien dong rotor la h§ so dieu bi€n m^ Thdng thudng bd qua bp £ e u khien cua rotor vi thdi gian d£^ ung rat nhanh Dong r^ phu thudc v i o £ § n i p rotor Ur va dd tiupt s [4] ,- , - , V "^ R, "'•'-, (l + o-^)/?^ (2) a^r _ " J rn dt 2H •• ™ -Vas'ds-Vqslqs] (3) Vdi: E'd E'q-i&^n ap (Kmg sau cac dien khang qua dO dpc tr^c v i ngang trvic; /f-hing so quin tinh m i y phit; ai, -v$n toe gdc trudng stator, Or - v | n toe goc rotor To=(Lr+L„;/Rr Xr+^« (5) *-^™J-'"or-^rf-^ ' ^Vj (4) '' 1^N„R, il + CT,)R, ^^(l + arJi^ d day N„ l i ti so vdng day giua rotor va stator, ^„-di^n i p dinh miic stator; K-di^n trd ciia rotor; f/d^-di^n ap cua tv tren hinh I at=X/Ka, (ti s6 giiia d i ^ khing t i n stator v i bo c i m stator-rotor); N I U di§n i p rotor thay doi thi can thdi gian de t90 til thong mdi m i y di^n, thdi gian n i y khoing tram miligiay C i c mo hinh cua cac D G can dugc qui ve m§t h$ qui c h i l u TAP CHl KHOA HQC & C6NG NGH? CAC TRU'dNG DAI HQC K? THU^T * S6 90 - 2012 BAITOANPHANB6C6NGSUATCAI BlfiN KHI C M A Y P H A T G I DFIG Trong cic kilu miy phit cd t6c d$ thay d6i, dii diiu chinh cdng suk ngO P, Q cd the bj gidi h^n klii bp diiu khiin ddng cd gidi h?m, Iim giim ning diiu chlnh cda I^r (tiiinh phan phin khing ciia ddng di^n rotor) vi 7,^ (tiianh p h ^ tic dyng ciia ddng di^n rotor) Phit trien y tudng [5], l^ mSi budc Igp, nlu vu(rt qui gidi hgn cOa ddng rotor, c ^ thiet cd thi phii tinh Igi P hay Q ciia miy phdt gid PHUONG P H A P G I A I BAI T O A N N DINH DONG Cd hai cich tilp cin de giii bii toin on dinh: Simultaneous-implicit (SI) method, Partitioned-explicit (PE) method [7] Bii bio ip d\mg phuong phip SI dugc coi li chinh xic hem phuong phap PE giii h§ phuong trinh tren Moi nut tii dupe bieu dien bdi hai phuong trinh d^ so CACDitMDACBIfTKHIKHAosAT NGANMACH Ludi truyen tii thudng cd ket cAu mgch vdng kin Doi vdi so it nmch vdng kin, sau cit ngin m^ch pha, ludi sS khong bj tich thinh tling vung rieng bi§t Ludi phin phoi c6 dac diem la v^n hinh hd Do xayrangin mach d mpt mit bit ki cd till dan tdi vi§c ludi se bi catrathinh tung viing riSng bi^t Day cung chuih la khd khin Idn nhit can xd ly khio sat on djnh dong ludi phin phoi cd gin DG De Iim diiu cin phii t\T dpng phan lo^ cic viing c6 cic nguon cap di^n sau s\f c6 dupe cit Neu vin de chung mpt h$ thong, kit qui tinh toan hoin toin khdng chinh xic Mpt viing sau cit sv c6 la t|p h?p cic niit cdn lien kit vdi Nd bj gidi h^n bdi mpt hay nhieu thiit bj ddng cit Vi dy mdt do^n ludi phan phoi nhu hmh 2 MC25 -hB- Cd viing: viing I du^c gidi h^n bdi miy cit MC25; viing dupe gidi h^n bdi may cit MC25 vi MC89; viing du^c gidi h^n bdi miy cit MC89 Nhu v^y cd s^ c6, cin tfailt phii tir d$ng phit hi^n vung cd s\f ct Nhung mit thudc viin^ niy sS bj xda chuong trinh khio sit cit s^ c^ Do v$y sau cit s\f cd, chi th\ic hi^n vigc khio sit on djnh nhiJng vung mi cho cit sv c6 van cdn mit nguon, hoic cd ci hai lo9i miy phit: miy phat gid lo^i DFIG vi miy phit Diezel, ho$c cd mpt lo9i miy phat Diezel Moi vimg dupe coi l i mpt he thong ricng bipt Khi cd tvr dong l^i s€ cau tnic l^i ludi dien nhu viy sS khdi ph^c l^i ma tr^n tong dan Ybus Bii bio niy de xuit mpt chuong tiinb khio sat on djnh cd ddng cit tai, thay doi cau hinh ludi, s^i cd (ngan m^ch doi xiing, bat ddi xixng) VIDVAPDVNG Xet m^g dien 15 mit (Mnh 3) Thdng s6 m?ng di§n: Miy bien ap t?i may phit DG: 5*.= 2.5MVA, 0.39kV/22kV Miy bien i p t^ may phit DG gid; S^ = 2.5MVA, 0.69kV/22kV Miy bien ip t^i nut h$ thdng: S*, = 60MVA 110/22 kV "Didng sd miy phit Diezen: 5*,=2MVA; Vam= O.SSkV; //=I(giSy), ;frf=1.014; X'd=0.l 14; A"^0.228; 7"rfO=6.55(giay); 7"90=0.85(guay) Bp kich tir: Ab=100; Ke=l\ 7'fl=0.278(giay); re=0.02(giay); A^O.063; Thong -f f sd DHG: 5A,=0.66MVA • UA,=0.69kV; Rj=0.0067; ft^.0058; Ar,=0.03; Jr,=0.0506; A'„=2.31; ^=lgiay I-Khdo sdt dnh hudng thdi gian cdt ngSn mgch (Tcdt) Hinh vi dy m0t dogn lut!n phdn phSi Xet mgng trSn chi cd DFIG (niitlS) va ngin m?ch (NM) pha t^i nut 14 (hinh 4-7) TAP CHi KHOA HQC & CdNG NGH$ C AC TRU'dNG DAI HQC Ki THU AT * S6 90 - 2U12 \= ^ fe cdc nit Tcdt ^O.Spdy Nhu V9y bien dd dao dpng Idn hon thdi gian cat tre hon 2-Anh hudng cua vi tri NM (tdi vj tri ddu n6i DFIG) Hinh T6C d6 gdc c&a m&y DFIG Tcdt =0.5 DFIG dau vio nut 13, thdi gian cit 0.2 giay (hinh 9,10) Khi cd tu ddng Igi, ket qua thu dupe li hmh 11-12 Nhu v|y ty ddng lai lam cho h$ tren on djnh trd lai Xet mgng chi c6 DFIG diu vao mit 15 Khio sit nhieu vi tri sv cd khic cho thay vj tri xa hem thi tinh on (Qnh tot hon Hinh minh hpa cho tinh hudng sy cd t^ nut sd 7, tiidi gian ch Tc = 0.2 giay So vdi hinh (vj tri sy cd t^i nut 14), bien dp dao dpng ciia v|in tdc gdc DFIG nhd hon 3-Anh hudng ciia tw ddng Igi (TDL) Xet ngin m^ch pha xiy tai mit 14 d m^g difn cd miy ddng bd (Hkn vao ntit 2, Hinh T6C d^ gdc ciia mdy DFIG NM text niit TAP CHl KHOA HQC & CdNG NGH? CAC TRU'ONG O^ HQC Kt THUi^T * S6 90 - 2012 Hinh T6C d() gdc cua mdy Sng b(> NM Hinh lO^c d$ gdt tc da DFIG MNMlglnig 14, pha lai niit 14 ih&i gum cdi Id 0-2s cdldO2gidy I" ••\j|||ftVi|^^ [(Ai'f.j^hmwwv^-•*t- Hinh 11 T6C d0 gdc cua mdy ddng b$ cd ngdn mach Ipha vd TDL K^TLUAJN Vi$c ton t^i cac DG gid inh hudng tdi cac cich tiep c§n bai toin trao luu cdng suit truyen thdng Vi dieu niy se inh hudng tdi dieu kien dau cua bii toin Bii bio dS xSy dpig vi tich hpp dupe bai toin cii bi£n niy vio chuong trinh khio sit on djnh Cac chuong trinh khio sit on dinh truyen thdng khdng fte trien khai dupe cho ludi phan phdi vdi ly li cin giii quyet van (^ t^o thinh idiieu ming ludi dpc 1^ Hlnh 12 T6Crf(5gdc ciia DFIG cd ngdn mgch pha vd TDI c3t ngin m^h Viec tv dpng phan lo^i cic viing sau su cd, lo^i bd vung bj sv cd la van dl quan trpng d day Bai bao cung da thi hi^ dupe vai trd ciia cac bp dieu khien mo hinh hda DFIG Chuong tiinh du^c xay dpng cho ph£p khio sit inh hudng ciia cic ylu to khic len on dinh ciia ludi phiin phdi cd miy phat gid cd cic nhiiu Idn Tv ddng Igi cd inh hudng tdt tdi on djnh ludi T A I L I ? U THAM K H A O Ahda Pionkoski Grilo, Alexandre de Assis Mota, "An Analytical Metiiod for Analysis of LaigeDisturbance Stiibility of Induction Generators," IEEE Trans On power system,Vol 22 no pp.1861-1869, November, 2007, Pablo Ledesma, and Julio Usaola, "Doubly Fed Induction Generator Model for Transient Stability Analysis," Trans On energy conversion Vol 20, no 2, pp.388-397, June 2005 J G Slootweg, P H Schavemaker, " Modelling and Analysing Impacts of Wind Power on Transient Stability of Power Systems," Wind energy, Vol 25, no 6, pp 3-20,2001 A.D Hasen, T Lund and H Bmdner, "Reduced Model of Double Fed Induction Generator System for Wind Tuibine Simulations," Wind Energy 2006; 9:299-311 K.C Divya, P.S Nagendra Rao, "Models for wind tuibme generating systems and their ^plication in load flow shidies," Electiic Power Systems Research 76 (2006) 844-856 Marcus V A Nunes, J A Pe9as Lopes, "Influence of the Variable-Speed Wind Generators in Transient Stability Margin of the Conventional Generators Integrated in Electiical Grids.," IEEE Tran.on energy conversion, Vol 19, no.4, pp 692-701, December 2004 Kundur.Povrer system stability and Control, Mc Graw Hill, 1994 Dia chi liin h$: Phan Tlii Tlianh Bmh - Tel: 0908327382, email: thanhbinh055@yahoo.com Trudng D?i hpc Bach khoa IP Hd Chi Minh, 268 L^ Thudng K i ^ TP HCM ... h ngoai vdi lu6i dien Anh hudng ciia b$ dieu khien DFIG c ^ dugfc luu tam k h i o sit Sn djnh: >-Hi Hinh 5(5 diiu khiin ciia DFIG Dau ciia bp dieu khiin cdng s u ^ t i c dyng l i / ^ dupe so sinh... phit (£$n gio Bp (£eu khien dong rotor vdi thdi gian isip \m% rat nhanh chi khoang 1ms Con doi vdi bO dieu khien cdng suat thi thdi gian dap ung la 10ms Dau ciia bp dieu khien dong rotor la h§... (hinh 9,10) Khi cd tu ddng Igi, ket qua thu dupe li hmh 11-12 Nhu v|y ty ddng lai lam cho h$ tren on djnh trd lai Xet mgng chi c6 DFIG diu vao mit 15 Khio sit nhieu vi tri sv cd khic cho thay