Zambiri za ogwiritsa ntchito
The pulasitiki mankhwala kampani makamaka umabala Pe madzi mipope, zitsulo Bellows ngalande mipope, etc. kampani 4 mizere kupanga, mbali ya mphamvu yoyendetsa amagwiritsa DC brushless Motors ndi DC variable pafupipafupi pagalimoto Motors, pali seti zinayi za 400KVA, aliyense thiransifoma pansi kuthamanga mbali Okonzeka ndi capacitance chipukuta misozi bokosi.Chithunzi cha dongosolo lamagetsi ndi motere:
Zomwe zimagwira ntchito
DC motor ya 400KVA transformer, mphamvu yayikulu ya inverter ndi 360KW, mphamvu yapakati ndi PF = 0.7, yomwe ikugwira ntchito ndi 780A, bokosi lolipira lopanda ntchito pansi pa thiransifoma nthawi zambiri limayenda, capacitor imakula ndikutuluka, ndipo wolamulira sangathe kulamulira zachilendo, etc. Phenomena, mlingo wokwanira ndi 0,8 okha, ndipo chindapusa chosavomerezeka ndi pafupifupi 15,000 pamwezi.Kuphatikiza apo, ma mota ndi zoyambira zofewa pamzere wopanga nthawi zina zimawonongeka, zomwe zimakhudza kupanga.
Kusanthula Mkhalidwe Wamagetsi
Katundu wamkulu wa DC brushless mota ndi inverter rectifier magetsi ndi 6 single-pulse rectifier magetsi.Pakugwira ntchito kwa zida zowongolera, AC imatha kusinthidwa kukhala DC, kupanga magwero ambiri aposachedwa, kuyambitsa mafunde amtundu wamagetsi mu gridi yamagetsi, komanso kukhudza gridi yamagetsi.Kuwonongeka kwa mawonekedwe kumapangitsa kuti mphamvu yamagetsi igwire ntchito, zomwe zimapangitsa kuti mphamvu yamagetsi igwire ntchito komanso yapano, kuyika pachiwopsezo chachitetezo chamagetsi osinthira, ndikuwonjezera kutayika kwa mizere ndi kupotoka kwamagetsi, komanso kukhudzidwa koyipa pa gridi yamagetsi ndi zida zamagetsi zopangira mphamvu zokha.
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.
Pamene zotakataka zotakasuka mphamvu chipukuta misozi capacitor banki aikidwa ntchito, chifukwa zimachitika panopa khalidwe impedance wa banki capacitor ndi yaing'ono, kuchuluka kwa kugunda panopa anayambitsa zikuchokera capacitor zikuchokera, ndipo kuchuluka panopa amakula mofulumira, kukhudza kwambiri moyo utumiki wake. .Kumbali ina, pamene kugunda panopa capacitor wa capacitor banki ndi lofanana pulse panopa inductor pulogalamu dongosolo, kuwonjezeka harmonic panopa (2-10 nthawi) kuchititsa capacitor kutenthedwa ndi kuwononga izo, ndi pulse current idzapangitsa kuti ma frequency amphamvu atuluke asinthe.Sinusoidal waveform yatuluka mu chimango, zomwe zimapangitsa kuti pakhale mawotchi akuthwa ngati macheka, ndipo amayambitsa kutulutsa kwapang'onopang'ono kwa zinthu zosanjikiza zotchingira, potero kufulumizitsa kufalikira kwa zinthu zosanjikiza, ndikuwononga capacitor.Chifukwa chake, capacitor reactive power compensation cabinet singagwiritsidwe ntchito pa DC brushless motor ndi inverter power compensation, ndipo fyuluta yokhala ndi pulse current kupondereza ntchito iyenera kusankhidwa kuti ikhale yochepetsetsa yamagetsi 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, kampani yathu idapanga zida zatsatanetsatane zamagalimoto a DC komanso chiwembu chofewa choyambira mphamvu zolipirira mphamvu zolipirira.Ganizirani mozama za katundu wamagetsi ndi kuponderezedwa kwa ma harmonic, ndikuyika zosefera pa 0.4KV pansi voteji mbali ya thiransifoma ya kampaniyo kuti mulipire mphamvu yamagetsi yocheperako kuti ipondereze ma harmonics, kubweza mphamvu zotakataka, ndikuwongolera mphamvu yamagetsi.Pakugwira ntchito kwa mota ya DC ndi inverter, chipangizo chowongolera chimapanga ma 6K + 1 apamwamba kwambiri.Zamakono zikawonongeka ndikusinthidwa ndi mndandanda wa Fourier, nthawi 5 za 250HZ ndi nthawi 7 za ma harmonics apamwamba pamwamba pa 350HZ amapangidwa.Chifukwa chake, pamapangidwe apakati pafupipafupi ng'anjo yamagetsi yamagetsi yamagetsi yamagetsi, ndikofunikira kupanga ma frequency a 250HZ, 350HZ ndi pamwambapa kuwonetsetsa kuti nthambi yolipirira zosefera imatha kupondereza ma harmonics ndikubwezera mphamvu zotakataka ndikuwongolera mphamvu.
ntchito yopanga
Mphamvu zonse zamtundu wa DC motor ndi frequency converter mzere wofananira ndi 400KVA thiransifoma amalipidwa kuchokera pa 0,7 kupita kupitilira 0.95.Filter compensator iyenera kukhazikitsidwa pamlingo wa 380kvar, womwe umagawidwa m'magulu 4 a mphamvu ndikudulidwa kuti ulipire kupindika kwa mbali yotsika ya thiransifoma motsatana.The wachinsinsi kusintha mphamvu ndi 45kvar, amene akhoza Agwirizane ndi zofunika zosiyanasiyana mphamvu ya mzere kupanga, kotero kapangidwe amaonetsetsa kuti mphamvu zosinthidwa ndi pamwamba 0,9.
Kusanthula zotsatira pambuyo kukhazikitsa chipukuta misozi
Mu Julayi 2010, chida cholipirira mphamvu zogwiritsa ntchito fyuluta yama motors a DC ndi ma frequency converter chidayikidwa ndikuyamba kugwira ntchito.Chipangizochi chimangotsata kusintha kwa katundu wa ma motors a DC ndi ma frequency converter, kupondereza ma harmonics mu nthawi yeniyeni, kubwezera mphamvu zogwira ntchito, ndikuwongolera mphamvu yamagetsi.zambiri monga izi:
Chida cholipirira chosefera chikagwiritsidwa ntchito, chosinthira chosinthira mphamvu chikagwiritsidwa ntchito ngati 0.99 (gawo lokwezeka limakhala pafupifupi 0.7 pomwe chida cholipirira zosefera chachotsedwa)
Katundu ntchito
Zomwe zimagwiritsidwa ntchito ndi 400KVA transformer zimachepetsedwa kuchokera ku 770A mpaka 520A, dontho la 33%.Pambuyo pa chipukuta misozi, mtengo wochepetsera kutaya mphamvu ndi WT=△Pd*(S1/S2)2*τ*[1-(cosφ1/cosφ2)2]=5×{(0.7×400)400}2×0.4≈2.8( kw· h) Munjirayi, Pd ndiye kutayika kwakanthawi kochepa kwa thiransifoma, komwe ndi 5KW, ndipo kupulumutsa ndalama zamagetsi pachaka ndi 2.8*20*30*10*0.7=11,700 yuan (kutengera kugwira ntchito maola 20 a tsiku, masiku 30 pamwezi, miyezi 10 pachaka, pa kwh magetsi 0,7 yuan).
mphamvu factor situation
Ufulu wonse wa kampaniyo udakwera kuchokera pa 0.7 mpaka 0.95, ufulu wa mwezi uliwonse umakhalabe pa 0.96-0.98, ndipo chilango chawonjezeka kuchokera ku 15,000 yuan pamwezi kufika 3,000-5,000 yuan pamwezi.
Makina a BLDC ndi fyuluta yoyambira yofewa
Chipangizo cholipirira mphamvu chogwira ntchito chimatha kupondereza kugunda kwapano ndikubwezera mphamvu yokhazikika, kuthetsa vuto lachilango champhamvu, kukulitsa kuchuluka kwa thiransifoma, kuchepetsa kugwiritsa ntchito mphamvu, ndikuwonjezera zomwe zimatuluka, kubweretsa phindu lazachuma. ku kampani ndikubweza ndalama zama projekiti yamakasitomala chaka chapitacho.Chifukwa chake, kampaniyo ndiyokhutitsidwa kwambiri ndi kubwezeredwa kwamphamvu kwamagetsi a brushless DC ndi zosefera za inverter, ndipo iwonetsa makasitomala ena mtsogolo.
Nthawi yotumiza: Apr-14-2023