Zambiri za ogwiritsa ntchito
Kampani yopanga pulasitiki makamaka imapanga nsalu zamkati ndi zakunja zotsatsa, nsalu zopopera, ndi zinthu zamafilimu zopindika za PVC.Zida zopangira za kampaniyi zili ndi mizere inayi yotambasula ya PVC yozungulira, yokhala ndi mzere wopangira ❖ kuyanika ndi mizere iwiri yopangira zithunzi, Gawo lamphamvu limagwiritsa ntchito ma frequency kutembenuka kwagalimoto ndi mota ya DC, seti 1000KVA, seti 2 za 1250KVA zosinthira, 2 seti ya 800KVA thiransifoma, 1 seti ya 630KVA thiransifoma, ndi mbale yolipirira mphamvu imayikidwa pambali yotsika voteji ya thiransifoma.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:
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)
Miyezo yoyendetsera katundu Zomwe zimagwiritsidwa ntchito ndi seti iliyonse ya 2000KVA zosintha zimachepetsedwa kuchokera ku 2250A mpaka 1860A, dontho la 17%;mtengo wochepetsedwa wa kutaya mphamvu pambuyo pa chipukuta misozi 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 (Kutengera ntchito maola 20 patsiku. , masiku 30 pamwezi, ndi miyezi 10 pachaka, 0.7 yuan pa kilowati-ola yamagetsi;bilu yamagetsi yopulumutsidwa chifukwa cha kuchepa kwa ma harmonics: Zowonongeka zomwe zimachitika chifukwa cha mafunde a ma harmonic kwa ma transfoma makamaka chifukwa cha kutayika kwa ferromagnetic komanso kutayika kwa Copper ndi kutayika kwa ferromagnetic kumakhudzana ndi mphamvu yachitatu ya ma frequency apano.Nthawi zambiri, 2% ~ 5% imatengedwa mu engineering, ndipo 2% imatengedwa kuti ikonzedwenso, ndiye: WS = 2000 * 6000 * 0.7 * 0.02≈168,000 yuan, ndiye kuti, ndalama zamagetsi zitha kupulumutsidwa chaka chonse. (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