Zambiri za ogwiritsa ntchito
Bizinesi yayikulu yamakampani opanga ma hardware ndi zomangira imapanga zitsulo zozungulira za PC, mbale zomaliza, mizere yamalata, mizere yosinthidwa, 30MnSi ndi zinthu zina.Kampaniyo ili ndi mizere 4 yabwino kwambiri yopangira, yomwe imagwiritsa ntchito kutentha kwapakati pafupipafupi ndi ma DC variable frequency drive motors, okhala ndi 2000KVA2 (yogwiritsidwa ntchito motsatira).Chithunzi cha dongosolo lamagetsi ndi motere:
Zomwe zimagwira ntchito
Mphamvu yeniyeni ndi PF = 0.82, yomwe ikugwira ntchito ndi 2250A, mphamvu yaikulu yamagetsi ndi nthawi 5, ndipo chiwerengero chonse chimakhala 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" kuchokera pamlingo wapanthawiyo wapamalire wamagetsi otsika ndi zida zamagetsi 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
Mphamvu zoyambira zofewa komanso zoyambira zofewa za gulu lililonse la zosintha za 2000KVA zimalipidwa kuchokera ku 0.8 mpaka 0.95, kugunda kwachisanu kumachepetsedwa kuchokera ku 420A mpaka 86A, kugunda kwachisanu ndi chiwiri kumachepetsedwa kuchoka pa 230A mpaka 46A, ndipo zida zolipirira zosefera ziyenera kukhazikitsidwa ndi voliyumu ya 1060KVar.Fyulutayo imagawidwa m'magulu 6, chipukuta misozi chimagwiritsidwa ntchito poyambira zofewa ndi ballast switching power supply, fyulutayo imagawidwa nthawi 5, nthawi 7, ndipo gawo lamagetsi lamagetsi la fyuluta limasinthidwa kuti liganizire ng'anjo yapakatikati. , fyuluta ndi mphamvu zogwiritsa ntchito Makonzedwe a dongosolo la chipukuta misozi.
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 zilili pansipa:
Kusanthula zotsatira pambuyo kukhazikitsa 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:
Chithunzi chogawa cha Harmonic spectrum
Lowetsani Waveform
Chida cholipirira chosefera chikagwiritsidwa ntchito, mphamvu yosinthira mphamvu ikagwiritsidwa ntchito ndi 0.97 (gawo lokwezeka limakhala pafupifupi 0.8 pomwe chida cholipirira chosefera chachotsedwa)
Katundu ntchito
Zomwe zimagwiritsidwa ntchito ndi seti iliyonse ya 2000KVA zosintha zimachepetsedwa kuchokera ku 2250A mpaka 1860A, dontho la 17%;pambuyo pa chipukuta misozi, mtengo wochepetsera kutaya mphamvu ndi WT=△Pd*(S1/S2)2*τ*[1-(cosφ1/cosφ2)2]=24 ×{(0.85×2000)/2000}2×0.4≈16 (kw h) Mu chilinganizo, Pd ndi kutayika kwafupipafupi kwa thiransifoma, yomwe ndi 24KW, ndipo kupulumutsa ndalama zamagetsi pachaka ndi 16 * 20 * 30 * 10 * 0.7 = 67,000 yuan (malinga ndi Ntchito maola 20 a tsiku, masiku 30 pamwezi, miyezi 10 pachaka, 0,7 yuan pa kilowatt-ola);mabilu amagetsi opulumutsidwa chifukwa cha kuchepa kwa ma harmonic: Kutayika komwe kumachitika chifukwa cha ma harmonic ku thiransifoma makamaka kumawonjezera kutayika kwa ferromagnetic ndi kutayika kwa mkuwa, Kutayika kwa ferromagnetic kumagwirizana ndi mphamvu yachitatu yama frequency apano.Nthawi zambiri, 2% ~ 5% imatengedwa mu uinjiniya, ndipo 2% imatengedwa kuti ikakule bwino, ndiye: WS=2000*6000*0.7*0.02≈168,000 yuan, ndiye kuti, Sungani magetsi pachaka (6.7+16.8)* 2=47 (10,000 yuan).
mphamvu factor situation
Ufulu wonse wa kampaniyo wakulitsidwa kuchokera ku 0.8 mpaka 0.95, ndipo mwezi uliwonse ufulu waufulu wasungidwa pa 0.96-0.98, ndi mphotho yowonjezera ya 6,000-10,000 yuan.
Zonsezi, zosefera za MFF ndi VF zocheperako zimakhala ndi zosefera zabwino kwambiri ndipo zimabwezeranso katundu wokhazikika, zimathetsa vuto la zilango zamphamvu zamagetsi, zimawonjezera mphamvu yotulutsa ma thiransifoma, zimakweza mphamvu zamagetsi, zimasintha mawonekedwe amagetsi ogwiritsidwa ntchito. zida, ndi amachepetsa yogwira mphamvu chipukuta misozi Kugwiritsa, dzuwa kuwongolera, phindu lalikulu zachuma kwa kampani, ndalama ndi mlingo kubwerera zosakwana chaka kwa makasitomala, etc. Choncho, kampani ndi wokhutira kwambiri ndi chipukuta misozi wapakati pafupipafupi kupatsidwa ulemu ng'anjo. ndi fyuluta reactive katundu wa inverter magetsi, ndipo adzayambitsa makasitomala ambiri mtsogolo.
Nthawi yotumiza: Apr-14-2023