Ngenxa yeemfuno zemveliso, kukho inani elikhulu lomthwalo wempompo kwishishini lepetrochemical, kwaye imithwalo yempompo emininzi ixhotyiswe ngabaguquli bamaxesha amaninzi.Inani elikhulu lezicelo ze-frequency converters zandisa kakhulu umxholo we-harmonic wenkqubo yokusabalalisa kwishishini lepetrochemical.Okwangoku, uninzi lwamakhonkco okuhlaziya abaguquleli bamaza kusetyenziso lwe-6 ye-pulse rectifier ukuguqula i-AC ibe yi-DC.Ngoko ke, ii-harmonics eziveliswayo ziyi-harmonics ye-5, yesi-7 neye-11.
1. Uhlalutyo lweempawu zomthwalo kwishishini leoli
Ngaphezulu kwe-85% yomthwalo wamandla kwigridi yoshishino lweoyile ngumthwalo ongenisayo, onjengeempompo zeoyile ezahlukeneyo, iimoto njalo njalo.Kwiminyaka yakutshanje, njengoko intsimi yeoyile ibeke phambili iimfuno eziphezulu zogcino lwamandla, iiyunithi ezininzi zamkele inani elikhulu lezixhobo zokonga amandla.Ngenxa yesiphumo esicacileyo sokugcina amandla, uhlengahlengiso olulula, ukugcinwa lula kunye nenethiwekhi, i-converter frequency isetyenziswe ngokubanzi ekusebenziseni ioli.Impompo, impompo, impompo yokuhla kunye nempompo yokuxuba kwisikhululo sokuvelisa i-oyile iqhutywa yi-converter frequency, kodwa i-converter frequency converter iya kuvelisa inani elikhulu le-harmonics ukuphazamisa umthwalo kunye nezixhobo zayo ezikufutshane, kunye ne-harmonics nayo iya kuvelisa. ichaphazela igridi yamandla oluntu ngentambo yombane engenisayo.
2. Ingozi ye-harmonics kwigridi yamandla entsimi yeoli
I-1) I-Harmonics ichaphazela ukusebenza okuzinzile kwegridi yamandla e-oilfield kunye nokunciphisa umgangatho wokunikezelwa kwamandla kwigridi yamandla ombane.
I-2) I-Harmonics yandisa amandla okulahlekelwa kwe-capacitor, inciphisa ubomi benkonzo ye-capacitor yamandla, kwaye kwimeko ye-harmonics enzulu, iya kwenza ukuba i-capacitor ikhuphe, ukuphuka okanye ukuqhuma.I-Harmonics inokunyusa ukulahlekelwa kwamandla kwi-transformer.
I-3) I-Harmonics iya kubangela ukuba ukulahlekelwa kwamandla e-motor ejikelezayo kwandiswe, kubangele ukushisa, ukuvelisa i-vibration yomatshini, ingxolo kunye ne-harmonic overvoltage, eya kunciphisa ubomi bezixhobo, kunye nomonakalo kwiimeko ezinzima;I-Harmonics iya kubangela ukungasebenzi kakuhle kokhuseleko okanye isenzo sokwaliwa;I-harmonics kwinkqubo yamandla idityaniswe nenkqubo yangoku ebuthathaka ngokungeniswa kwe-electromagnetic, ukufakwa kwe-electrostatic kunye nokuqhuba, okuya kubangela uphazamiseko kwinkqubo yangoku ebuthathaka.
Ngokusetyenziswa okubanzi kwesiguquli esiqhelekileyo kwinkqubo yokutofa kwamanzi kwintsimi yeoli, ayisombululi kuphela iingxaki zokuguquguquka koxinzelelo lwamanzi, ukusetyenziswa kwamandla aphezulu kunye nokusebenza okuphantsi, kodwa kuzisa ukwanda komxholo we-harmonic kwigridi yamandla.Ubukho benani elikhulu le-harmonics lisongela ukuthembeka kunye nokhuseleko lwenkqubo yokubonelela ngombane.Ukuze kupheliswe umonakalo obangelwa yi-harmonics, ukusetyenziswa kwemveliso, ukuphucula umgangatho wokunikezelwa kwamandla ombane wombane, ukuqinisekisa imveliso eqhelekileyo.
I-Noker Electric (/ malunga-nathi/) isihluzo esisebenzayo se-harmonicngeteknoloji ye-IGBT ye-3 yanamhlanje, yimveliso yokulawula i-harmonic efanelekileyo.Nayiphi na inkxaso, qhagamshelana nathi ngokukhululekileyo.Siza kukubonelela ngesisombululo esicwangcisiweyo.
Ixesha lokuposa: Jun-30-2023