Zambiri za ogwiritsa ntchito
Kampani yopanga magalimoto imapanga zida zamagalimoto otetezeka.Kampaniyo ili ndi mizere 4 yabwino kwambiri yopanga.Mizere yopangira imagwiritsa ntchito kutentha kwapakati pafupipafupi ndi ma DC variable frequency drive motors, okhala ndi 2000KVA2 (mndandanda wantchito).Chithunzi cha dongosolo lamagetsi ndi motere:
Zomwe zimagwira ntchito
Transformer ya 2000KVA yokhala ndi ng'anjo yapakatikati komanso inverter ili ndi mphamvu yayikulu ya 1500KVA, mphamvu yeniyeni ndi PF = 0.82, yomwe ikugwira ntchito ndi 2250A, ma harmonics makamaka 5 ndi 7, ndipo kuchuluka kwaposachedwa kwaposachedwa ndi 23.6% .
Kusanthula Mkhalidwe Wamagetsi
Katundu wamkulu wa ng'anjo yapakatikati yolumikizira ma frequency, ng'anjo yapakatikati yolumikizira ma frequency ndi magetsi osinthira ma inverter ndi 6th pulse rectifier.Zipangizo zokonzanso zimapanga ma pulse ambiri posintha AC yapano kukhala voteji ya AC.Mphamvu yamagetsi yomwe imalowetsedwa mu gridi yamagetsi imatha kuyambitsa kugunda kwamagetsi apano, zomwe zimabweretsa kusinthasintha kwamagetsi ogwiritsira ntchito ndi apano, kuyika pachiwopsezo chachitetezo chamagetsi osinthira magetsi, kutayika kwa mizere ndikusokonekera kwamagetsi ogwiritsira ntchito, komanso kusokoneza gridi yamagetsi, zida zamagetsi zamagetsi amagetsi okha.
Pulogalamu yoyang'anira makompyuta (PLC) imakhudzidwa ndi kusokonekera kwa mphamvu yamagetsi yamagetsi osinthira magetsi.Nthawi zambiri zimanenedwa kuti mphamvu yamagetsi yomwe ikugwira ntchito pakali pano (THD) ndi yochepera 5%, ndipo mphamvu yamagetsi yomwe ikugwira ntchito pakali pano ngati chiwongola dzanja chakwera kwambiri, kuwonongeka kwa makina owongolera kungayambitse kusokonezeka kwa magetsi. kupanga kapena kugwira ntchito, zomwe zimapangitsa kuti pakhale ngozi yayikulu yopangira.
Chifukwa chake, chipukuta misozi chochepa chamagetsi chamagetsi cha fyuluta chokhala ndi ntchito ya pulse current fyuluta chiyenera kugwiritsidwa ntchito kubweza katundu wothamanga ndi kukonza mphamvu yamagetsi.
Sefa dongosolo lothandizira chipukuta misozi
Zolinga zaulamuliro
Mapangidwe a zida zolipirira zosefera amakwaniritsa zofunikira pakuponderezedwa kwa ma harmonic ndi kasamalidwe kamphamvu koletsa mphamvu.
Pansi pa makina ogwiritsira ntchito a 0.4KV, zida zolipirira zosefera zitayamba kugwira ntchito, kugunda kwamagetsi kumaponderezedwa, ndipo mphamvu yapakati pamwezi imakhala pafupifupi 0.92.
High-order harmonic resonance, resonance overvoltage, ndi overcurrent chifukwa cholumikizana ndi fyuluta compensation nthambi dera sizidzachitika.
Mapangidwe Amatsatira Miyezo
Ubwino wa mphamvu Public gululi harmonics GB/T14519-1993
Kusinthasintha kwamphamvu kwa Voltage ndi kusinthasintha kwa GB12326-2000
General mikhalidwe luso otsika-voteji zotakasika mphamvu chipukuta misozi chipangizo GB/T 15576-1995
Chipangizo cholipirira magetsi otsika-voltage JB/T 7115-1993
Chiwongola dzanja champhamvu chaukadaulo JB/T9663-1999 "Low-voltage reactive power automatic compensation controller" High-order harmonic panopa malire mtengo kuchokera ku low-voltage power and electronic equipment GB/T17625.7-1998
Electrotechnical mawu Mphamvu capacitors GB/T 2900.16-1996
Low voteji shunt capacitor GB/T 3983.1-1989
Mphamvu ya GB10229-88
Mphamvu ya IEC 289-88
Low-voltage reactive power compensation controller order mikhalidwe DL/T597-1996
Low-voltage magetsi mpanda chitetezo kalasi GB5013.1-1997
Low-voltage wathunthu switchgear ndi kulamulira zida GB7251.1-1997
Malingaliro opangira
Malinga ndi momwe kampaniyo idakhalira, kampaniyo idapanga mapulani atsatanetsatane amalipiro amagetsi opangira ng'anjo yapakatikati komanso ma inverter magetsi.Poganizira za katundu wamagetsi ndi pulse current fyuluta, A seti ya sefa yotsika-voltage reactive mphamvu yamagetsi, zosefera kugunda kwapano, kubweza katundu wotakataka, ndikuwongolera mphamvu yamagetsi.
Munthawi yonse ya ng'anjo yapakatikati yolowera ma frequency ndi chosinthira, zigawo zonse zimapanga 6K pulse currents, zomwe zimasinthidwa molingana ndi kutuluka kwaposachedwa kwa mndandanda wa Fourier, ndipo mafunde amtunduwu amapangidwa pa 5250Hz ndi 7350Hz.Chifukwa chake, popanga chiwongola dzanja chowongolera mphamvu, choyambira chofewa ndi 350Hz frequency design scheme zimawonetsetsa kuti zosefera zolipirira mphamvu zamagetsi ndizoyenera komanso kusefera komwe kumatulutsa mphamvu zamagetsi kumakonzedwa kuti kuwongolera mphamvu yamagetsi kuti pulogalamu yamapulogalamu yamapulogalamu yapano ikhalepo. mogwirizana ndi GB/T3 mogwirizana.
ntchito yopanga
Aliyense seti 2000KVA thiransifoma limafanana wapakatikati pafupipafupi ng'anjo ndi mabuku mphamvu chinthu cha inverter amalipidwa kuchokera 0,8 kuti pamwamba 0,95, ndi harmonic 5 yafupika kuchokera 420A kuti 86A, ndi 7th harmonic yafupika kuchokera 230A kuti 46A.Chipangizo cholipirira zosefera chiyenera kukhazikitsidwa ndi mphamvu ya 1060KVar.Agawika m'magulu 6 mphamvu zosinthira basi, lolingana ndi wapakatikati pafupipafupi ng'anjo, inverter rectifier mphamvu kotunga fyuluta chipukuta misozi, ogaŵikana nthawi 5, nthawi 7 ndi chabwino chipukuta misozi chipukuta misozi msewu basi kusintha, kukumana wapakatikati pafupipafupi ng'anjo, inverter fyuluta ndi mphamvu zochitira Chipukuta misozi Zofuna kupanga.
Kapangidwe kameneka kamatsimikizira kuti kuwongolera kwa ma harmonic kumayenderana ndi muyezo wadziko lonse wa GB/T 14549-93, ndikusintha mphamvu ya ng'anjo yapakatikati ndi ma frequency converter pamwamba pa 0,95.Monga momwe tawonetsera pachithunzichi: Kusanthula kwa zotsatira pambuyo poika chipukuta misozi
Mu June 2010, ng'anjo yapakatikati ya ng'anjo ndi makina osinthira ma frequency converter reactive power compensation device inayikidwa ndikuyamba kugwira ntchito.Chipangizocho chimangotsata kusintha kwa katundu wa ng'anjo yapakatikati ndi kutembenuza pafupipafupi, ndipo kumachotsa ma harmonics apamwamba kuti athe kubwezera mphamvu yogwira ntchito ndikuwongolera mphamvu.zambiri monga izi:
Nthawi yotumiza: Apr-14-2023