Hpi nghi khoa hoc ki thudt md qudc ti 2010 Cong nghiep md tien tiin vi su phdt trien bin vung CHAT LlTONG CUNG CAP DIEN CHO CAC XI NGHIEP MO VA MOT SO GIAI PHAP CAN LUU Y D£ DAP UiNG NHU CAU TANG CITO[.]
Hpi Cong nghi nghiep khoa hoc md tien ki thudt tiin md qudc vi su phdt ti - trien 2010 bin vung CHAT LlTONG CUNG CAP DIEN CHO CAC XI NGHIEP MO VA MOT SO GIAI PHAP CAN LUU Y D£ DAP UiNG NHU CAU TANG CITONG CO GIOI HOA NGANH THAN TS Dao D5c Tao; ThS Luu Quang Vu K S Pham Thanh L i e i n V i e n K h o a hoc C o n g nghe M o - T K V Chat luong dien nang co dnh huong rdt 1&n den su lain viec ciia may moc thiet bi Bdo cdo trinh bay mot so ket qua nghien ciru, danh gid ve chat luong mang cap dien cho cdc xi nghiep mo a khu virc Quang Ninh vd de xudt mot so gidi phap can hru y cung cap dien de ddp img nhu cdu tdng cuong ca giai hoa a cdc mo nhirng nam tai day Cung cap dien nang d a m bao cac c h i tieu chat l u g n g de dap i m g yeu cau cong nghe ciia cac ho tieu t h u , n h a m g i u p hg xuat x u a n g n h u n g san p h a m co chat l u g n g , gia la mot yeu cau cap thiet va dugc hau het cac n u a c cong nghiep phdt t r i e n quan tam Do cung la ca sa de hg dua cac giai phap sir d u n g dien nang n o i r i e n g va nang l u g n g noi chung tiet k i e m v a hieu qua, dugc da so cac n u a c tren the g i a i lira c h g n u u tien de thuc hien " C h i e n luge phat t r i e n ben v i r n g " giai doan hien Chat luong dien nang co anh huong Ion den sy lam vice cua thiet bj cac day c h u y e n c o n g n g h e : Cac chi t i e u chat l u g n g cung cap d i e n lech k h o i gia t r i danh d i n h co anh h u a n g rat l a n den su l a m viec ciia thiet b i dien t r o n g cac x i nghiep c o n g nghiep n o i chung ciing nhu nganh m o n o i r i e n g , gay nen n h u n g thiet hai k i n h t l dang k l t r o n g cac day c h u y l n cong nghe (nang suat, chat l u g n g san pham, tai nan lao d o n g ) V a n g u g c l a i , c h i n h cac p h u tai dac t r u n g cua nganh m o ( n h u may xuc, m a y k h o a n , t a i true, tau d i e n m o , m a y khau than, may dao 16, may d a y ) l u o n co p h u tai thay d i , t h u a n g x u y e n p h a i l a m viec d che dao chieu lien tuc yeu cau cua cong nghe, l a i l a m cho cac c h i t i e u chdt l u g n g cung cap dien xau d i dang ke * Do lech dien ap co anh hudng rat ldn den su lam viec ciia cac ddng co khong dong bd, la p h u tai chii y e u ciia cac x i nghiep cdng nghiep K h i d i e n ap tren cue ddng co giam qua mire, m o m e n can cd the v u g t qua gia t r i ciia m d m e n quay, l a m cho d d n g c o k h o n g the quay dugc N e u k h o n g cdt dien, ddng ca se b i chay D i e n ap tren cue d d n g c a thap l a m cho dieu k i e n k h d i d d n g ciia dong c o g i a m d i dang ke K h i dd, c u d n g tir t r u d n g ciia stator cung g i a m d i (den - % k h i dien ap g i a m 1%) v a n h u vay c i i n g v d i cdng sudt t i e u t h u n h u trudc t h i ddng phai tang len, k h i e n cho c u o n day b i n o n g qua m i i c , l a m g i a m each dien ciia cuon day, k e m theo d d la t u d i tho ciia d d n g ca; * D i e n ap lech k h d i gia t r i danh d i n h l a m tang dang ke cdng suat phan k h a n g tieu tan tren d u d n g day, t r o n g cac m a y bien ap v a cac ddng c o dien N e u dien ap tren cue d d n g ca tang len % t h i cdng suat phan khang tang t h e m tir 3% t r d len (do tang d d n g k h o n g tai ciia dong ca); 102 Hoi Cong nghi nghiep khoa hoc md tien ki thudt tien md quoc vi su phdt te - trien 2010 ben vimg * Cac thilt bi nhay cam vai sir dao dong dien dp la cac 16 dien, cac den chieu sang va cac t h i l t b i dien tir Sir nhap nhay cua n g u o n sang gay sir kho c h i u , met m o i , anh h u o n g d i n nang sudt lao dong, t i e m an nguy co gay tai nan t r o n g qua t r i n h san xuat; * Dao d o n g dien ap l a m cho nhieu he thong dien tir, tir d o n g hoa, t h o n g t i n lien lac, quan trac, g i a m sat k h o n g the hoat dong duoc b i n h t h u o n g , gay t o n hai cho qua t r i n h giam sat, dieu hanh san xuat D i e n ap dao dong I o n h o n 15% l a m cho cac cuon hut ciia cac role dieu khien, cac attomat va k h o i dong tir k h o n g g i u duoc, can t r o den sir hoat dong binh t h u o n g ciia m a y cong tac t r o n g cac day chuyen san xuat D i e n ap dao dong khoang tir ( H % co the l a m h u h o n g cac t u dien b u cung n h u cac bo b i e n d o i ban dan; * Su mat d o i x u n g pha anh h u o n g true tiep den cac p h u t a i , dien h i n h nhat la cac dong co k h o n g dong bo N g u o i ta da c h i m g m i n h rang t u o i tho ciia d o n g c o k h o n g dong bo mang day t a i , k h i l a m viec t r o n g l u o i co dien ap mat d o i x i r n g % se b i g i a m d i lan va neu n h u su mat d o i x i r n g la 5% t h i cong suat ciia dong co se g i a m d i tir 5-^10% Su mat d o i xung pha ciing gay nen ton hao cong suat va phat nhiet t r o n g stator va rotor, anh h u o n g true tiep den su l a m viec ciia cac dong co dong bo S u mat d o i x u n g pha l a m cho che lam viec ciia ciia cac bo bien d o i , bo c h i n h l u u nhieu pha x a u d i rat n h i e u - l a m tang dang ke su nhap nho ciia d i e n ap nan, l a m cho he thong dieu k h i e n x u n g - pha ciia cac bo bien doi tiristor k h o n g the l a m viec b i n h t h u o n g duoc; * K h i dien ap mat d o i xirng cac t u b u se tieu thu cong suat v o cong cac pha k h o n g deu D o vay m a t u dien k h o n g duoc sir dung het d u n g l u o n g lap dat N g o a i ra, su mat doi xirng ciia cac pha m a c h i n h cac bo t u dien t r o n g t r u o n g h o p c o n l a m tang them sir mat d o i xirng b o i v i cong suat phan khang ciia t u t r o n g pha co dien ap thap se nho h o n cac pha khac (ty le thuan v o i b i n h p h u o n g dien ap ciia l u o i ) ; * D i e n ap " k h o n g s i n " cung mang lai n h u n g t o n hai g i o n g n h u la su mat doi xirng Song hai bac cao cung gay nen t o n that h u u cong tren tat ca cac phan tir ciia he thong cung cap dien n h u m a n g cung cap, may bien ap, cac may dien, cac bo t u dien b o i v i dien tro ciia cac phan tir p h u thuoc vao tan so; * Sir dao dong ciia tan so co anh h u o n g true tiep den phan dien tir, lien quan mat thiet den su tieu hao cong suat h u u cong va v o cong t r o n g m a n g N g u o i ta da c h i i n g minh rang - neu n h u tan so g i a m d i % (0,5 hez) t h i l u o n g t o n hao cong suat t r o n g mang se la 2% D o dao d o n g ciia tan so ma su thiet hai mang lai cho chat l u o n g san p h a m day chuyen cong nghe ciia x i nghiep nhieu k h i c o n I o n h o n n h i l u , so v o i n h u n g t i n hao k l tren Dao dong tan so ciia dien ap co anh h u o n g ro ret nhat d o i v o i cac thiet b i dien tir Dao dong tan so qua +0,1 hez da l a m cho cac t i n hieu ciia cac m a n h i n h m o n i t o r , camera theo doi, man h i n h v o t u y e n b i meo d i ro ret T a n so a t r o n g khoang tir 49,5 + 49,9 hez l a m cho tin hieu tren m a n h i n h bien dang den ldn so v o i t i n h i e u chuan T a n so ti - trien bin 0? Op QV 2010 vung S> fs> Hinh Dudng phdn phoi tan sudt cua dien dp (a) vd tan so (b) tqi tram 35/6 kV, Cong ty than Vang Danh £33 , Q ^ 50.1 J Hz 27/11/09 10:22 OB 43.35ft ©107.4 A Q) 113.3 A (3)111.5 A Ah 01 0100.0% (2)100.0% (5)100.0% > 180 Af 34.8 A 36.0 A 35.2 A +000°