Yini okufanele inakwe lapho ukuvumelanisa okulinganayo kwamaqoqo ejeneretha?
I-Quasi-simultaneous association iyinqubo eyenziwa ngezandla.Ukuthi umsebenzi uhamba kahle noma unobambiswano oluhle kakhulu nolwazi lomsebenzisi.Ukuze uvimbele ukuhlangana ngezikhathi ezihlukene, ukunamathela ezimeni ezi-3 akuvunyelwe ukuvala.
1. Uma ithiphu letafula lokuvumelanisa ligxuma, alivunyelwe ukuvala, ngenxa yokuthi kungase kube khona ukuzwa kwetheyiphu ngaphakathi kwetafula lokuvumelanisa, elingakwazi ukukhombisa izinkinga ezifanele ezifanayo.
2. Uma ithebula ngasikhathi sinye liphenduka ngokushesha, libonisa ukuthi umehluko wefrikhwensi phakathi kwejeneretha elungele ukufana kanye nelelinye iqoqo lejeneretha elihlukile mukhulu kakhulu.Ngenxa yokuthi isikhathi sokuvala se-circuit breaker kunzima ukusibona, i-circuit breaker ngokuvamile ayivalwanga endaweni yokuvumelanisa.Ayivunyelwe ukuvala.
3. Uma ithiphu yetafula lokuvumelanisa ima endaweni yokuhlanganisa, ayivunyelwe ukuvala iswishi lapho ima.Lokhu kungenxa yokuthi uma imvamisa yenye yejeneretha isungula izinguquko ngokuzumayo phakathi nenqubo yokuvala i-breaker, kungenzeka ukuthi i-breaker ivale kusici esingavumelanisiwe.
4. Ulungiswa kanjani nje umuzwa wamandla ahlehlayo wamasistimu ahambisanayo?
Lapho amasethi ejeneretha angu-2 ehlanganiswa kungabikho amathani, kuzoba nenkinga yomehluko wefrikhwensi kanye nomehluko kagesi phakathi kwamaqoqo amabili akhiqiza ugesi.Futhi kumathuluzi okuqapha (i-ammeter, imitha yamandla, imitha yesici samandla) wawo womabili amasistimu, isimo sangempela samandla ahlehlayo siyaboniswa, elinye lingamandla ahlehlayo abangelwa isivinini esingavamile (isikhathi esijwayelekile), kanti enye ibangelwa umehluko we-voltage. .Umsebenzi ohlanekezelwe, ukuguqulwa kwawo kuhambisana nalokhu:
1. Ukuguqulwa kwesenzakalo samandla ahlehlayo okubangelwa imvamisa: uma amafrikhwensi amasistimu womabili engalingani, kanye nomehluko mkhulu, uzovezwa ethuluzini (i-ammeter, imitha yamandla), i-current of the idivayisi enejubane eliphezulu iveza ukubaluleka okuhle, kanye imitha yamandla ikhombisa ukubaluleka okuhle.Amandla, ngakolunye uhlangothi, akhona akhombisa ukubaluleka okungafanele, futhi amandla akhombisa ukubaluleka okubi.Njengamanje, shintsha isilinganiso (imvamisa) yeyunithi eyodwa, futhi uyiguqule ngokuya ngenkomba yemitha yamandla, futhi ushintshe isibonakaliso semitha yamandla sibe cha.Yenza izinkomba zamandla womabili amayunithi cha, ukuze amazinga okujikeleza (okujwayelekile) awo womabili amadivayisi afane ngokuyisisekelo.Kodwa-ke, lapho i-ammeter isabonisa khona manje, lena isenzakalo samandla ahlehlayo esibangelwa umehluko we-voltage.
2. Ukuguqulwa kwesenzakalo samandla ahlehlayo okubangelwa ukuhlukaniswa kwe-voltage: lapho izinkomba zemitha yamandla zamasethi amabili ejeneretha zingucha, futhi i-ammeter isenophawu lwamanje (okungukuthi, inkomba eyodwa ehlanekezelwe kanye neyodwa evumayo), i-voltage. ukuguqulwa phakathi kwamasethi ejeneretha kungalungiswa kabusha.Lapho ushintsha i-knob, kuya ngenkomba ye-ammeter kanye nesici samandla.Susa uphawu lwe-ammeter (okungukuthi, lulungise lube ngu-cha nhlobo).Ngemuva kokuthi i-ammeter ingenakho inkomba, lungisa isici samandla sibe ngaphezulu kuka-0.5 kuye ngophawu lwemitha yesici samandla.Imvamisa, ingalungiswa ibe ngu-0.8, okuyisimo esihle kakhulu.
5. Isekhethi yokuphepha ye-generator
1. Amandla ahlehlayo Umuzwa wamandla ahlehlayo ulethwa umehluko wezinga (ukuvamile) kanye ne-voltage yeqoqo le-generator, okungukuthi, iqoqo lejeneretha elilodwa linamandla avumayo, kuyilapho elinye iqoqo elihlukahlukene linamandla amabi.Okusho ukuthi, isistimu enamandla angalungile ifika ekubeni amathani okwamanje (imvamisa yalesi simiso iphansi futhi izinga lokujikeleza alihambisani).Lapho ama-voltages engafani, uhlelo olunamandla kagesi oluphezulu luzonikeza amandla amanje asabelayo kanye ne-voltage esebenzayo kudivayisi ene-voltage encishisiwe (i-ammeter yale yunithi ikhombisa isiqondiso esihle), okufana nokwengeza uhlelo lokulawula isigaba uhlelo lokuhlinzeka ngogesi.Iyunithi ene-voltage ephansi igcina isiyinkatho enkulu ngalesi sikhathi, ithola amandla amakhulu asebenzayo ukuze igcine ukulingana kwamandla kagesi wamayunithi amabili (i-ammeter yalolu hlelo ikhombisa isiqondiso esibuyela emuva).Uma ugada, lungisa i-voltage yeyunithi ethile ibe mkhulu noma wehlise i-voltage yolunye uhlelo, okubangele ukuthi idivayisi ibe namandla ahlehlayo akhona, futhi ukusebenza kwayo kuhlobene no-20% wesilinganiso esikhona.I-reverse power relay iyasebenza, iyahamba, futhi nama-alamu, nokho ayiyeki.
2. Okwedlulele: Amandla alinganiselwe wesethi yamanje yejeneretha aqinisekile, futhi umthamo wayo wokulayishwa ngokweqile uphansi kakhulu, ngokuvamile ngokuphathelene no-5% wamandla asezingeni.Isikhathi sokulayisha esivunyelwe imizuzu eyi-15 ~ 30, kanti futhi umkhawulo awukho ngaphezu kwemizuzu engama-60.Isethi yejeneretha izofudumala, futhi nokufakwa kwentambo ngokuqinisekile kuzoncipha, okuzonciphisa impilo yesevisi.Ngaleso sizathu, uma singekho isidingo esiyingqayizivele lapho kusungulwa ukuzivikela okudlulele, ukuvikelwa kwe-overcurrent kungasethwa ku-110% yamanje elinganiselwe.Kuso sonke isikhathi sokuhlolwa kokulayishwayo, letha okwamanje ku-110% wamanje olinganiselwe, kanye ne-overcurrent relay ngokuqinisekile izosebenza.Uhambo, isistimu ye-alamu, akukho ukuvalwa.
3. I-overvoltage: Uma amasethi ejeneretha esetshenziswa ngokuhambisana, okunye okusatshwa kakhulu ukuthi uhlelo lokuphakela amandla luzonyakaza.Ngokushesha nje lapho i-voltage yesistimu ye-oscillating ikhuphuka, kulula ukuqalisa ukuhlukaniswa kwe-insulation yamathuluzi kagesi kanye nempahla yokuphakela amandla, kanye namathuluzi okuphakela amandla kagesi kanye namathuluzi kagesi azobe enganyakazi.Ngale njongo, amasethi ejeneretha asetshenziswa ngokuhambisana afakwe ukuvikelwa kwe-overvoltage, futhi inani lawo lokusetha lingu-105% we-voltage elinganiselwe yilona elisebenza kahle kakhulu.I-short-circuit over-voltage relay, uhambo kanye nokuyeka, isenzo se-alamu.
Isikhathi sokuthumela: Dec-30-2022