Isithando somlilo esiphakathi sizokhiqiza inani elikhulu lama-harmonics ngesikhathi sokusetshenziswa.Ama-harmonics ngeke abangele kuphela i-resonance parallel yendawo kanye nochungechunge lwe-resonance yamandla, kodwa futhi akhulise okuqukethwe kwe-harmonics futhi ashise imishini yesinxephezelo se-capacitor nezinye izinto zokusebenza.Ngaphezu kwalokho, i-pulse current izophinde ibangele amaphutha kumadivayisi okuvikela i-relay namadivayisi azenzakalelayo, okungaholela ekudidekeni esilinganisweni nasekuqinisekiseni amandla kazibuthe kagesi.
Ukungcoliswa kwe-harmonic yegridi yamandla kubi kakhulu.Ngaphandle kwesistimu yamandla, ama-harmonics azodala ukuphazamiseka okukhulu emishinini yokuxhumana namathuluzi kagesi, kanti ama-harmonics ayingozi kakhulu kumishini yokushisa ephakathi nendawo.Ngakho-ke, ukuthuthukisa ikhwalithi yamandla yesithando somlilo esiphakathi sibe yingxenye ebalulekile yempendulo.
Isithando somlilo esiphakathi nendawo siwumthwalo ojwayelekile wobunjiniyela bamandla ahlukanisiwe, ozokhiqiza inani elikhulu lama-harmonics athuthukile phakathi nenqubo yokusebenza, eyaziwa nangokuthi ama-harmonics aphakathi kwesithando somlilo.Isisindo sayo se-harmonic ikakhulukazi izikhathi ezi-5, 7, 11 nezingu-13.Ukuba khona kwenani elikhulu lama-harmonics asezingeni eliphezulu kuzobeka engcupheni ukuphepha nokusebenza okushelelayo kobunjiniyela bamandla kanye nezisetshenziswa zesinxephezelo somthamo womgwaqo ofanayo webhasi.I-transformer yesigaba sesithupha ingakwazi ukuvala i-harmonics yesihlanu neyesikhombisa ekhiqizwa isithando somlilo esiphakathi, kodwa uma kungekho zinyathelo zokucindezela ezihambisanayo ezithathwayo, uhlelo luzokhulisa i-harmonics, luthinte ukusebenza okuzinzile kwe-transformer, futhi lubangele ngisho ne-transformer ukushisa ngokweqile. kanye nomonakalo.
Ngakho-ke, lapho kunxeshezelwa ama-harmonics wesithando somlilo esiphakathi, kufanele kuqashelwe ukuqedwa kwama-harmonics, ukuze kuvinjwe imishini yesinxephezelo ekukhuliseni ama-harmonics asezingeni eliphakeme.Uma umthamo wokulayisha imvamisa emaphakathi mkhulu, kulula ukubangela izingozi ezikhubekayo ekugcineni kwe-voltage ephezulu yesiteshi esincane kanye nokuphazamiseka kwe-harmonic kwamabhizinisi ahambisana nolayini.Njengoba umthwalo ushintsha, isilinganiso samandla esithandweni somlilo asikwazi ukuhlangabezana nezinga lenkampani yethu, futhi sizohlawuliswa nyanga zonke.
Qonda izingozi zezithando zomlilo we-high-frequency ekusetshenzisweni kokulawula i-harmonic, indlela yokuqinisekisa ukusebenza okujwayelekile kanye nempilo yesevisi yemishini, futhi uthuthukise ukusebenza kahle.
Okokuqala, incazelo emfushane yokuvikelwa kwemvelo nokongiwa kwamandla okuhambisana nochungechunge lwamasekhethi okuphakela amandla okufakwa kwesithando somlilo okuphakathi:
1. Uma kuqhathaniswa nochungechunge noma i-parallel circuit, i-current of the load circuit iyancipha kusukela ezikhathini ezingu-10 kuya kweziyi-12.Ingonga u-3% wokusetshenziswa kwamandla okusebenza.
2. Isekethe yochungechunge ayidingi isihlungi esinamandla amakhulu, esingagcina u-1% wokusetshenziswa kwamandla.
3. Isithando somlilo ngasinye sokuncibilika kwe-induction sinikezwa amandla ngokuzimela yiqembu lama-inverters, futhi asikho isidingo sokufaka umshini wokushisa ophezulu wamanje wokushintsha, ngaleyo ndlela ulondoloze u-1% wokusetshenziswa kwamandla.
4. Ochungechungeni lwamandla kagesi we-inverter, ayikho ingxenye ye-concave yamandla ejika lesici samandla okusebenza, okungukuthi, ingxenye yokulahleka kwamandla, ngakho-ke isikhathi sokuncibilika sincishiswa kakhulu, okukhiphayo kuyathuthukiswa, amandla ayagcinwa, futhi ukuvikelwa kwemvelo nokonga ugesi kungu-7%.
Okwesibili, isizukulwane kanye nokulimala kwe-harmonics yesithando somlilo esiphakathi:
1. I-Parallel intermediate intermediate intermediate power power supply system ingumthombo omkhulu we-harmonic ohlelweni lwamandla.Ngokuvamile, isithando somlilo esiphakathi kwe-6-pulse intermediate frequency kagesi sikhiqiza ikakhulukazi i-harmonics ye-6 kanye ne-7, kuyilapho i-inverter ye-12-pulse ikhiqiza ikakhulukazi i-harmonics ye-5, 11 kanye ne-13.Ngokuvamile, ama-pulses angu-6 asetshenziselwa amayunithi amancane okuguqula futhi ama-pulse angu-12 asetshenziselwa amayunithi amakhulu okuguqula.Uhlangothi lwamandla kagesi aphezulu lweziguquli zesithando somlilo ezimbili zisebenzisa izinyathelo zokushintsha isigaba ezifana nokuxhumeka kwe-delta enwetshiwe noma i-zigzag, futhi lisebenzisa uxhumano lwesibili lwenkanyezi enezinhlangothi ezimbili ukuze kwakheka ukunikezwa kwamandla okuvama kwama-pulse amaphakathi angama-24 ukunciphisa umthelela wama-harmonics igridi yamandla.
2. Isithando somlilo se-medium frequency induction sizokhiqiza ama-harmonics amaningi ngesikhathi sokusetshenziswa, okuzodala ukungcoliswa kwe-harmonic okubi kakhulu kugridi yamandla.Ama-Harmonics anciphisa ukudluliswa kanye nokusetshenziswa kwamandla kagesi, enze okokusebenza kukagesi kushise ngokweqile, abangele ukudlidliza nomsindo, afinyeze ungqimba olufakwayo, afinyeze impilo yesevisi, futhi abangele ukwehluleka noma ukusha.I-Harmonics izobangela i-resonance yochungechunge lwendawo noma i-parallel resonance ohlelweni lokuhlinzeka ngamandla, okuzokhuphula okuqukethwe kwe-harmonic futhi kubangele ukuthi imishini yesinxephezelo ye-capacitor nezinye izinto zokusebenza zishise.
Uma isinxephezelo samandla asebenzayo singeke sisetshenziswe, kuzovela isijeziso samandla asebenzayo, okuholela ekwenyukeni kwezikweletu zikagesi.I-Pulse current ingase futhi ibangele amaphutha kumadivayisi okuvikela i-relay namadivayisi azenzakalelayo, okungaholela ekudidekeni esilinganisweni nasekuqinisekiseni amandla kazibuthe.Ngaphandle kwesistimu yokuphakelwa kwamandla, i-pulse current izoba nomthelela omkhulu ezintweni zokuxhumana kanye nemikhiqizo ye-elekthronikhi, ngakho-ke ukuthuthukisa ikhwalithi yamandla yesithando somlilo esiphakathi nendawo sekuyinto ehamba phambili.
Isikhathi sokuthumela: Apr-12-2023