KHOA HOC'CONG NGHt • DIEU KHIEN TURBINE GIO MAY PHAT DHG CHO CONG SUAT NGO RA CUC DAI Bui Le Ngoc Minh - Nguyen PhUdc Tin T6MTAT Bdi bdo ndy trinh bay chiin lUgc dieu khiin turbine gio toe dd thay doi sU dung mdy phdt dien cim Ung ngudn ddi (Doubly Fed induction Generator) di cdng suit ngd cia turbine gid ludn Id cUc dgi tuong Ung vdi sU thay doi toe dd gid ngd vdo ThUc Men md phdng hai to mdy phdt dien gid sU dung turbine gid toe dd codjnh mdy phdt dien khdng dong bd vd turbine gid tdc thay doi miy phit dien nguon ddi cd ciing cdng suit vd so sdnh ddp Ung ngd da hai to mdy d cung dieu kien gid Thuat nguf C Hieu suat cua canh quat turbine H Hang sd q u i n tinh rotor ii^, i|j Ddng dien rd rotor, stator i^, ij Ddng dien rotor, stator \^ Ddng dien tU hda J J^^ Moment q u i n tinh m i y phat, turbine gid K ^^^ Ti sd truyen qua hop sd L Oien c i m tU hda L , L Oien c i m rd rotor, stator P^ Cdng suat cd m i y phat P , P^ Cdng suat t i c dung qua mach rotor, stator Q^, Q^ Cdng suat p h i n khing mach rotor, stator R Bin kinh canh quat R Oien trd tU hda m R^ R^ Oien trd rotor, stator s Op trUpt rotor S^, S^ Cdng suit bieu kien rotor, stator T T Moment dien tU, moment cd may p h i t Moment turbine gid wtr Oien ap rotor, stator Gdc pitch cinh quat P TIsd tdc dp dau canh A Mat dp khdng P Van tdc gid u •/'^, V'^Tif thdng rotor, stator (D Van tdc gdc cd hpc cCia rotor 0) , 0) Tdc dd rotor, dong bp Turbine gid tdc dd co dlnh : Oay la ky thuat dUde sU dung tU nhUng nam dau phat trien cua turbine gid Miy phit hoat ddng d tdc dp la hang sd, bat chap tdc dp gid Tdc dp rotor cua turbine gid la cd djnh dUpc xac djnh theo tan sd ludi, ti sd truyen va thiet ke cua miy phit Hlnh Sodd turblnegid tocdOcodlnh dCing mdyphdtdl6n khOng dong bO Turbine gid tdc dp cd djnh cd nhUpc diem la tdc dp may phat khdng the thay doi dUdc, vl vay khdng the thu dupe cdng suat cUc dai tU gid Turbine gl6 toe dO thay doi: Xu hUdng dUpe p h i t trien mot vai nam trd lai diy va dupe sU dung cho cac cinh ddng turbine gid hien dai, chung dUpc thiet ke de dat dupe hieu suat cUc dai mot khoing tdc dp gid rpng He thdng sU dung may dien cim Ung ngudn ddi hoac m i y dien ddng bd ket ndi vdi ludi thdng qua mot bd chuyen doi cdng suat >.1.iv M^pkB.rfthDFU- I Gidri thieu Tren the gidi hien cd nhieu chUng loai turbine gid va hoat ddng theo cac nguyen ly khic nhau, cd the phan hai dang cd b i n la turbine gid tdc dp cd djnh va turbine gid toe dp thay doi Dang turbine gid tdc dp cd djnh thUdng sU dung phat dien khdng dong bd, cdn turbine gid tdc dp thay doi thUdng sU dung m i y p h i t dien c i m Cfng ngudn ddj (DFIG) hoic m i y phat ddng bd vdi bp chuyen doi toan phan [1,2] HTffit •f ^\}/| ^ ^ i J \_x_ N A$ _1_ XX ^ > ^ i» BT AmrlmJir ^ a MMJL Hlnh SO turbine gl6 t6c dO thay dSl dCing mdy phdt DFIG men A D&i song 15 E] KHOA HQC - CONG NGHf: Khi nang thay doi tdc dp cua m i y p h i t ti le vdi cdng suat cua bd chuyen doi Chang han nhU bd chuyen doi cd kich cd bang 30% cdng suat cua m i y phat thl tam thay doi tdc dp la ± 30% Trong he thdng chi mot phan cdng suat di qua bd chuyen doi tan sd, nhU vay g i i cua bd chuyen doi va he thdng thap hdn so vdi he thong chuyen doi hoan toan toan bd cdng suat di qua bd chuyen doi L/u diem cUa turbine gid tdc dp thay doi la cd the thu dUpc cdng suat cUc dai tU gid dw' TiT thdng mdc vdng dUdc xac djnh bdi cac bieu thUc W (iW (iW TocdotuibineiiDM,^) ããdr -Ơ'drilr)=l^P(.Ơlils -Ơqfds) (27) Gpi cdng suat ngd turbine la P = l^Pi¥d/qs-¥qril) (28) Hi Oap ufng cua turbine vdi van toe gid ngd vao C la ham cUa X va B p '^ _ cOj.R A DUdng cong cdng suatcCta turblnegid Mot nhUng nhan td chinh i n h hudng den sU thUe hien mot he thdng chuyen doi nang lUpng gid la dap Ung cdng suat cUa nd vdi nhUng van tdc gid khac Oieu thdng thUdng dupe cho bdi dudng cong cdng suat cua turbine OUdng cong cdng suat p h i n i n h k h i nang ddng hpc cua m i y phit, k h i ning chuyen doi cdng suat va nhUng i n h hUdng p h i t sinh he thdng nang lUpng [9] LnOtMtoSQgwJI UikpidlcSag I {tin Wt hiiu »it V (29) Mdi quan he C vdi cic he sd X va p dUpc bieu dien [10] C„(/l,yff) = ( 4 - / ) s i n ^^~^ '^ ^^ -0.00184 ( - + yl);ff Chien lupc van hanh cdng suat cUc dai la giU cho cdng suat ngd Idn nhat, nham tdi Uu hda nang lUpng nhan dupe tU gid pham vi thay doi tdc dp lam viec cho phep, day la che dp van hanh thUdng 6Mc i p dung cho cac turbine gid cdng suat Idn.Theo nhU Hinh 4, tdc dp turbine se dupe dieu chinh tuong Ung vdi moi van tdc gid khac de cdng suat ngd ludn nam tren dudng cong cdng suat tdi Uu IV Chien lUOc van hanh cong suat cUc dai turbine gid toe thay doi may phat DFIG ^0 S 10 15 20 2k 25 Van tdc gid (m/s) Hlnh DUdng cong cdng suit /y tUdng cua turbine gid cdng suit 2MW 30 Thdng thUdng cd hai cich thUe hien dieu khien tdi Uu cdng suat dau cua m i y dien gid A Dieu khien tdi Uu ty sd tdc dd ddu eUc A Theo cich tdc dp gid d\iae lUdng lien tuc tren CO sd dOf lieu gid d\iac, tdc dp m i y p h i t se dUpc dieu B.TUang quan glOa toe dd vd cdng suat ngd cOa chinh de tdi Uu X theo tUng gia trj tdc dp gid va dd cd the turblnegid dat cdng suat dau tdi Uu, so nguyen ly cho nhU hinh 18 men A D&i song KHOA HQC - CONG NGHf: Q nhd, cdng suat dau dupe lUdng lien tuc, tren co sd dd tinh toan t^ sd AP^Ao,, ^ ' i ^ ^ -.w »*.'4ijf Hlnh 7.Sa dieu khien bdm dlnh cdng suat mdy phdt DFIG Nhu vay de tdi Uu cdng suat iuac til gid thi tdc dp cua rotor nhan Khi tdc dp gid ngd vao Idn hon phii duac dieu chinh tuong Ung vdi Vg, turbine gid dupe n g i t de b i o ve van tdc gid dau vao C i hai chien lupc m i y p h i t va cac bd p h i n co khic deu nhim muc dich dat dupe a Oliu khien bdm dlnh cdng suit tUPng quan P-C tdi Uu Nguyen ly eUa phUOng p h i p la tim cUe trj cCia cdng suat P^ theo u^ , nghia la: dP dOr- (31) P= HatmgjoMQg xft^w^tftwt I I V-Tf HlnhftDdc tuyen cdng suit theo tdc dd gid cua turbine gid mdy phdt dl6n DFIG B Kit qui md phdng V Ket quib md phdng va thio Tdc dp gid ban dau iuac dat d 5.5m/s va dUpe tang dan len 6m/s, 7m/s, 8m/s, 9m/s, lOm/s va 11 m/s O i p Ung ngd eCia hai to miy phat A Mdtd mdhlnh nhu hlnh luan Td mdy phdt diin gid 1: Gom turbine gid cdng suat djnh mUe moi turbine 2MW tai tdc dp 9m/s, tong cdng suat to may phit la 12MW sU dung miy phat dien khdng ddng bd Gdc pitch kiem soit cdng suat ngd vao cua turbine gid gidi han, Hlnh 10.Tdeddgldngdvdovdsuthayddi van tdc gid vupt q u i gidi han gdc pitch Clio cdc dang turbine gid danh djnh (9m/s) Tdc dp turbine xap xi 1.005 pu d cdng suat djnh mUc Hlnh Nguyen /y eUa dliu khiin bdm Td mdy phdt dl6n gid 2: Gdm Oinh cdng suit turbine gid cdng suat djnh mUe moi turbine 2MW, tong cdng suat to miy Thuan Ipi cUa phUOng p h i p p h i t la 12MW Tdc dp turbine gid la khdng yeu cau x i c djnh tdc dp dupe dieu khien cd the thay doi Xii gid Theo nguy#n ly nay, tdc dp rotor G.7pu den 1.3pu tUOng Ung vdi tdc dupe tang hoic g i i m vdi cic gia sd Hlnh 11 Cdng suit phin khdng eOa td mdy phdt men A D&i song 19 E] KHOA HQC CONG NGHt dai hda cdng suat thu dUpc nen cdng suat ngd Idn hon so vdi turbine gid tdc dp cd djnh d hau het van tdc gid Cdng suat ngd cua turbine gid tdc dp cd djnh se bang vdi cdng suat ngd cUa turbine gid tdc dp thay doi tai Hlnh 12.Cdng suit tdc dung ciia td tdc dp gid djnh mUc, m i y phat mdy phdt duoc thiet ke de dat he sd C cUc dai p tai van tdc gid Hlnh l3.Ddp Ctng tdc dd cua dang mdy phdt Cdng suat p h i n khing tieu thu cua turbine gid tdc dp thay doi vdi may phat DFIG rat nhd, va gan bang khdng tai cdng suat djnh mUc Trong d turbine gid tdc dp khdng doi vdi m i y phat khdng ddng bd tuong Ung vdi sU gia t i n g cdng suat t i e dung ngd ra, cdng suat phan khing tieu thu cUa m i y p h i t cung gia t i n g tuong Ung Tdc dp cua may p h i t DFIG thay doi tU 0.7pu den 1.3pu theo van Hlnh 14.Ddp momen dien tCtcCia tdc gid, tdc dp may phat dang mdy phdt khdng ddng bd gan nhU khdng doi, chi thay doi tU pu den 1.005pu Nhan xet TU ket q u i md phdng nhan thay rang: Khi van tdc gid ngd vao gia tang, turbine gid tdc dp thay doi vdi m i y p h i t DFIG cd the thay doi tdc dp, nen nd cd kha nang d i p Ung vdi sU gia t i n g van tdc gid, vl vay gdc pitch cinh quat chi thay doi rat nhd khoang dp, d turbine gid tdc dp khdng doi vdi may p h i t khdng ddng bd, gdc pitch einh quat gia tang den dp Khi van tdc gid ban dau nhd (5.5m/s), cdng suat ngd cua turbine gid tdc dp khdng doi vdi m i y phat khdng ddng bd bang khdng vl vdi van tdc ehUa dU de may p h i t quay vdi tdc dp ddng bd, turbine gid tdc dp thay doi vdi may p h i t DFIG da p h i t sinh cdng suat may phat cd the lam viec d van tdc 0.7pu Khi van tdc gid gia tang, cdng suat ngd cua turbine gid tdc dp thay doi gia tang theo dudng ddc, va cd the thay doi tdc dp de cUc 20 men A D&i song Tuong Ung vdi sU gia tang tdc dp gid, momen dien tU cua cac may phat cung gia tang, nhien d may p h i t DFIG d i p Ung cham hon vdi sU thay doi van tdc gid ket q u i la die tuyen gia tang tron hdn, d m i y p h i t khdng ddng bd gan nhU dap Ung tUe thdi vdi sU thay doi cua van tdc gid nen d i e tuyen cd cung dang gid ngd vao VI Ket luan TU ket q u i md phdng nhan thay rang turbine gid tdc dp thay doi vdi m i y phat DFIG cd the hoat ddng d d i i tdc dp rpng hdn so vdi turbine gid tdc dp khdng doi vdi m i y p h i t khdng ddng bd, nhU vay turbine gid m i y phat DFIG cd the tan dung tdt ngudn nang lupng gid hpn so vdi turbine gid m i y phat khdng ddng bd Do CO the thay doi tdc dp de eUc dai hda cdng suat thu dupe nen cdng suat ngd cua turbine gid m i y phat DFIG Idn hdn so vdi turbine gid tdc dp cd djnh d hau het van tdc gid Cdng suat phan khang tieu thu cua turisine gid tdc dp thay doi vdi miy phit DFIG rat nhd, va gan bang khdng tai cdng suat djnh mUc Trong dd d turbine gid tdc dp khdng doi vdi miy phit khdng ddng bd tUdng Ung vdi sU gia ting cdng suat t i c dung ngd ra, cdng suat phin khing tieu thu cua may phit cung gia tang tUdng Uhg Nhu vay ve phUdng dien ky thuat, turbine gid tdc dp thay doi vdi m i y p h i t DFIG cd Uu diem hdn so vdi turbine gid tdc dp khdng doi vdi miy p h i t khdng ddng bd Mot chien lUpe dieu khien tdc dp turbine thich hpp bang phUdng thUe dieu khien tdi Uu ty sd tdc dp dau cue hoac dieu khien bam dinh cdng suat cd the giup may p h i t DFIG thu dUdc cdng suat cUc dai tU gid VII Tai lieu tham khao [1] Clemens Jauch, "Stability and Control of Wind Farms In Power Systems".Ph.D thesis, Aalborg University,Denmark October 2006 [2] Aleksandar Radovan Katancevic, "Transient and Dynamic Stability on WIndFarms" Master's thesis submitted for approval for the degree of Master of Science, Helsinki university of technology, March, 3rd 2003 [3] Johannes gerlof slootweg,"W/nd power modelling and impact on power system dynamics" Ph.D Thesis Technische Universiteit Delft,December 2003 [4] Aleksandar Radovan Katancevic, "Transient and Dynamic Stability on Wind Fanvs" Master's thesis submitted for approval for the degree of Master of Science, Helsinki university of technology, March, 3rd 2003 [5] Slavomir Seman, "Transient performance analysis of wind-power induction generators" Doctoral Dissertation,Helsinki University of Technology (Espoo, Finland) on the 10th of November,2006 ... lupc dieu khien turbine gid tdc dp thay doi may phat DFIG de dat muc tieu cUc dai cdng suat thu dUpc cua turbine, thUc hien so sinh cdng suat ngd cua turbine gid tdc dp thay doi va turbine gid tdc... L,, + L Hlnh Toe dd turbine toi Uu tuang Ong vdi mdi vdn tdc gid \/lomen dien tUT cho bdi lis thj nhan thay rang ufng vdi moi van tdc gid, ton tai mot tdc dp cua turbine cho cdng suat ngd cUc... nhan thay rang turbine gid tdc dp thay doi vdi m i y phat DFIG cd the hoat ddng d d i i tdc dp rpng hdn so vdi turbine gid tdc dp khdng doi vdi m i y p h i t khdng ddng bd, nhU vay turbine gid