ứng dụng phần mềm plecs mô phỏng hệ thống điều khiển nối lưới cho tuabin gió sử dụng máy phát điện DFIG

^ iTNG DUNG PHAN MEM PLECS M PHONG HE T H O N G DIEU KHIEN NOI LlTcn CHO TUABIN GIO SU" DUNG MAY PHAT DIEN DFIG Application of Flees in modelUng grid-connected control for wind turbines using Dfig Le Kim Anh' Huynh Duong Khanh Linh^ Tom tat Abstract Nghien cim sic dung vd khai thdc hieu qud ngudn ndng lugng gid di phdt dien cd y nghia thiit thuc den viec gidm biin ddi hdu vd gidm suphu thugc vdo cdc ngudn nhien liiu hda thach cd nguy co cgn kiet, gdy d nhiim moi tru&ng De dieu khien tuabin gid vgn hdnh dugc tdi uu vdi van tdc gid nhdt dinh, hi thdng phdi tu dieu chinh theo su thay doi cita van tdc vd hu&ng gid Uu diim ciia hi thong la khd ndng truyin ndng lugng theo cd hai huang nh& cdc bd bien ddi dien tir cdng sudt vd kit hgp v&i mgch lgc de logi trie cdc sdng hdi bdc cao, dieu ndy coy nghia l&n den viec edi thiin chat lugng dien ndng Bdi bdo dua kit qud md phdng he thdng dieu khiin ndi lu&i ung dung phdn mimPlecs cho tuabin gid sic dung mdy phdt diin khdng dong bg ngudn kep (Doubly Fed Induction Generator — Dfig) nhdm tri cdng sudt phdt tdi da cua he thdng bdt ehdp tdi noi v&i he thdng Researching the eff'ective use and exploitation of the wind energy to generate electricity is meaningful This contributes to reduce climate change and energy dependence on fossil energy sources which are at risk of both exhausting and causing environmental pollution In order io efriciently operate wind turbines at a defined wind velocity, the rotor system must be functioned and be self-adjusted to the change of wind speed and direction The positive side of the system is able to transfer power in both directions thanks to the use of power electronic converters and the combination of harmonic filter circuits in order to filter out high level harmonics on the grid This will also have a significant effect on power quality improvement The article showed the result of modulating gridconnected control system in Plecs applied for wind turbine using Doubly Fed Induction Generator Dfig in order to maintain maximum capacity of the system regardless of connected power loads Tir khda- ndng luang gid, tuabin gid, Dfig; cdc Key words: Wind energy, Wind Turbine, Dfig, bo biin ddi dien tic cong sudt, Plecs Power electronic converters, Plecs Ngay nay, cung vdi sy phat manh me cua thd gidi, nhu cau su dyng nang lugng cua ngudi cang tang Nguon nang iugng tai tao (Renewable Energy sources - RES) noi chung va ngudn nang lugng gio noi ridng la ngudn nang lugng sach, khdng gay nhidm mdi trudng, ddng thdi tiem nang ve tru lugng nang lugng gid a nude ta rat Ion Theo sd lieu ciia Ngan hang Thd gidi, tiem nang gid ciia Viet Nam (d cao 65m) rit kha quan, udc dat 513.360MW, Idn han 200 lin cdng suit nha may thiiy dien Son La va han 10 lin tdng cdng suit dy bao ciia nganh didn ddn nam 2020 Theo Le Danh Lien (2008), day se la ngudn nang lugng tidm nang dang ke cd thd khai thac va bd sung cho ngudn dien luai qude gia, thay thd din cac nguon nang lugng hda thach cang ^ Trudng Cao can kiet, cai thien dugc mdi trudng sdng dang la muc tidu nghidn ciru cua nhieu qude gia Vi^c ung dung phin mdm Plecs md phdng he thong dieu kidn noi ludi cho tuabin gio six dung may phat dien Dfig nham hudng ddn phat trien luai dien thdng minh va didu khien linh hoat cac ngudn nang lugng tai tao *^ , •r i1 •»k -^ I Ua K&itth ""len'iiinSW) fljiiUn „0*iiai Temnirt>(KI/\ Wftrwn Denia , JM,H1 - f""w ijl Dat van de M* • m,»z 070 67! "^ãiô tiao zm 37.337 33.787 j 7,3 0% IIMW ' " S M J " * ' lOaXl S67J Z\«7 «i.«M 102 715 7,^ oat ' iBua 113 on '-"TCterAD-fMWl S7iB fi2 "asm Bang I: Tiem nang gio cua Bdng Nam A (cao 6Sm) Nguon: Ngan hang The gidi So 16, thdng 12/2014 ^ He thdng dieu khien noi ludi tnabin gio su dung may phat dien Dfig phia stator dugc noi Uyc tiep ludi dien, phia rotor dugc ndi qua hai bg bidn ddi Bg bidn ddi chinh Theo (Martin Kanalik, Frantisek Lizak 2005), luu ggi la (AC/DC) dugc dat d phia rotor cho dien he thdng didu khidn ndi luai tuabin gid sd dung ap mdt chidu (DC), bd bien ddi nghjch luu ggi may phat dien khdng ddng bg ngudn kep (Doubly la (DC/AC) dugc dat d phia ludi cho didn ap Fed Induction Generator, Dfig) bao gom cac xoay chidu (AC) ndi ludi, hai bd bidn ddi lidn he phan ca ban, nhu Hinh He thong tuabin gid, vdi vdi thong qua mach mdt chieu trung gian Bg chinh lim (AC/DC) Bg nghicb (DC/AC) —-Jig "T- ^ ir Stator 4- Ngudn gio ' Gdc ' pitch(0p) May phat dien (DFIG) Ludi didn Cacbd dieu khien Hmh 1: He thong dieu khien ndi lu&i cho tuabin gid sic dung mdy phdt dien l.\ Mo hinh tuabin gid Theo Rooholiah Fadaeinedjad, Gerry Moschopoulost, Mehrdad Moallemt (2006), cdng suat ciia tuabin gid dugc tfnh theo bidu thuc: C(A,/3)^ 'm Trong do: P^: Cdng suat dau cua tuabin (W); C (X,p): He sd bien ddi nang lugng (la ty sd giiJa Xgpt 7.6 10 12.5 tdc dd diu canh va goc canh P); A: Tidt dien vong Hinh 2: Mdi quan hi giira C vdi quay cua canh quat (m^); p: Mat ciia khdng khi, Nhu ta da bidt ty sd tdc dau canh tuabin gio p = 1.255 (kg/m^) Td bidu thuc (1) ta thay van tdc va tdc dd la: gid la yen td quan trgng nhat ciia cdng suat; cong Ro) suat dau tang theo luy thira van tdc He sd bidn Z ddi nang Iugng C (k, p) ciia bieu thuc (1) theo (Tao Sun 2004), dugc tinh nhu sau: CO tdc quay ciia tuabin, R ban kinh cua tuabin, v van tdc ciia gio Mdmen ciia tuabin gid Cp(^;5) = 0.5176(—-0.4^-5)e'' +0.0068/1 (2) duCTc tinh nhu sau: A, A + 0.08 /? 0.035 + /3^ (3) Dudng cong bidu didn mdi quan he giira C ' A, nhu Hinh T^ = —TtpR^C G) (4) "2} Mat khac, tuabin gio cd the van hanh theo cac quy tac didu khien khac tiiy thudc vao toc cua gio Dudng cong bieu didn mdi quan he giiJa P va van tdc gio (v), nhu Hinh So 16, thdng 12/2014 El_ Theo Lei Yazhou, Mullane Alan, Lightbody Gordon (et al 2006), phucmg trinh di?n dp tren stator va rotor he tga dd dq dugc tinh nhu sau: RJ, dt du/^ " r = RrK+^T^"" 2.2 Mo hinh may phat dien Dfig Mo hinh may phat dien khdng dong bd ngudn kep (Dfig) c6 hai loai he tga dugc su dyng: He tga a^ gin cd dinh vdi stator va he tga dq cdn ggi la he tga tua theo didn ap stator, dugc lya chgn dd phat Uidn md hinh ciing nhu phat trien cac thuat toan didu khidn cho may phat didn khdng ddng bd ngudn kep Rs J^rWr (6) at Trong do, co : la tdc goc cua stator, co^: la tdc gdc m?ich dien rotor {fsi= m- co^), co^: la tdc dp gdc ca ciia rotor Mat khac, tii thdng ciia stator va rotor d bidu thdc (5) vd (6) dugc tinh nhu sau: Hinh Moi quan lie giua P^ vd van tdc ¥s = h^s + 'V-^m 0) vdi L^: la hd cam gifla hai cugn day stator v^ rotor va L , L : la cac dien cam ciia stator va rotor Tu cac bidu thuc (5), (6), (7) va (8) da phan tich a tren, ta vidt lai nhu sau: ^Jjoj— Lj-^jLin L[5^_Li-Lm^ (Psd Hmh 4: Md Mnh (DFIG) tren hi tpa dp dq _M^^+±„^ (9) dt ciX L\ J ,_ — ^ ^ +1 a J T; A., - rV,j + a V