Uhlelo Lokulawula Ukusebenza Okufanayo
Incazelo Yomkhiqizo
Okokuqala, yiziphi izimo zokusebenza okufanayo kwamasethi ejeneretha?
Yonke inqubo yokufaka isethi yejeneretha ekusebenzeni okuhambisanayo ibizwa ngokuthi ukusebenza okuhambisanayo. Isethi yokuqala yejeneretha izosebenza, i-voltage ithunyelwa ebhasini, kanti enye isethi yejeneretha ngemva kokuqala, kanye nesethi yangaphambilini yejeneretha, kufanele ibe sesikhathini sokuvala, isethi yejeneretha akufanele ibonakale iyingozi, umgodi awuthinteki ngokuzumayo. Ngemva kokuvala, i-rotor kufanele idonswe ngokushesha ekuvumelaniseni. (okungukuthi, ijubane le-rotor lilingana nejubane elilinganisiwe) Ngakho-ke, isethi yejeneretha kumele ihlangabezane nezimo ezilandelayo:
1. Inani elisebenzayo kanye nesimo segagasi se-voltage yesethi yejeneretha kumele kufane.
2. Isigaba samandla kagesi samajeneretha amabili siyafana.
3. Imvamisa yamasethi amabili ejeneretha iyafana.
4. Ukulandelana kwesigaba samasethi amabili ejeneretha kuyavumelana.
Okwesibili, iyiphi indlela yokuhlanganisa ama-juxtaposition ahambisanayo yamasethi ejeneretha? Ungawenza kanjani ama-juxtaposition ngesikhathi esisodwa?
I-quasi-synchronous yinkathi eqondile. Ngendlela ye-quasi-synchronous yokusebenza okuhambisanayo, i-voltage yesethi yejeneretha kumele ifane, imvamisa iyafana futhi isigaba siyahambisana, esingaqashwa ngama-voltmeter amabili, amamitha amabili emvamisa kanye nezinkomba ezihambisanayo nezingezona ezihambisanayo ezifakwe kudiski ehambisanayo, futhi izinyathelo zokusebenza okuhambisanayo zimi kanje:
Iswishi yokulayisha yesethi eyodwa yejeneretha ivaliwe, bese i-voltage ithunyelwa kubha yebhasi, kanti enye iyunithi isesimweni sokulinda.
Vala ukuqala kwenkathi efanayo, lungisa ijubane lesethi yejeneretha yokulinda, ukuze ilingane noma isondele kwijubane elihambisanayo (umehluko wemvamisa nenye iyunithi ngaphakathi kwesigamu somjikelezo), lungisa i-voltage yesethi yejeneretha yokulinda, ukuze isondele kwi-voltage yesethi yejeneretha yomunye, lapho imvamisa ne-voltage kufana, ijubane lokujikeleza kwetafula elihambisanayo lihamba kancane futhi lihamba kancane, futhi ukukhanya kwesikhombisi nakho kukhanya futhi kumnyama ngesikhathi esifanayo; Lapho isigaba seyunithi okufanele ihlanganiswe sifana neseyunithi enye, i-pointer yemitha ehambisanayo ikhombisa indawo ephakathi yesikwele ephezulu, futhi isibani esihambisanayo sifiphele. Lapho umehluko wesigaba phakathi kweyunithi okufanele ihlanganiswe nenye iyunithi mkhulu, i-synchronous meter ikhomba endaweni ephakathi ngezansi, futhi isibani esihambisanayo sivuliwe ngalesi sikhathi. Lapho i-synchronous meter pointer ijikeleza ngokwewashi, ikhombisa ukuthi imvamisa yejeneretha ehambisanayo iphakeme kuneyenye iyunithi. Ijubane lesethi yejeneretha yokulinda kufanele lincishiswe, futhi ijubane lesethi yejeneretha yokulinda kufanele landiswe lapho i-pointer yewashi ijikeleziswa ngokuphambene newashi. Uma inkomba yewashi ijikeleza kancane ohlangothini lwewashi futhi inkomba isondela endaweni efanayo, i-circuit breaker yeyunithi ezohlanganiswa ivalwa ngokushesha, ukuze amasethi amabili ejeneretha abe sendaweni efanayo. Amaswishi e-chronograph akhishwe eceleni kanye nama-chronoswitch ahlobene nawo.
Okwesithathu, yini okufanele inakwe lapho kwenziwa i-juxtaposition ehambisanayo yesethi yejeneretha?
I-quasi-synchronous parallel isebenza ngesandla, kungakhathaliseki ukuthi ukusebenza kubushelelezi futhi ulwazi lomqhubi lunobudlelwano obuhle, ukuze kuvinjelwe i-synchronous parallel ehlukene, amacala amathathu alandelayo awavunyelwe ukuvala.
1. Uma inkomba yethebula elihambisanayo ibonakala sengathi i-jumping phenomenon, ayivunyelwe ukuvala, ngoba kungase kube ne-cassette phenomenon ngaphakathi kwethebula elihambisanayo, engabonisi izimo ezifanele zokuhlangana.
2. Uma ithebula elihambisanayo lijikeleza ngokushesha kakhulu, libonisa ukuthi umehluko wemvamisa phakathi kwesethi yejeneretha kanye nesethi yejeneretha enye inkulu kakhulu, ngoba isikhathi sokuvala se-circuit breaker kunzima ukusiqonda, ngokuvamile i-circuit breaker ayivalwanga ngesikhathi esifanayo, ngakho-ke ayivunyelwe ukuvala ngalesi sikhathi.
3. Uma inkomba yewashi ima ngesikhathi esifanayo, ayivunyelwe ukuvala. Lokhu kungenxa yokuthi uma imvamisa yesethi yejeneretha ishintsha ngokuzumayo ngesikhathi senqubo yokuvala, kungenzeka ukuthi i-circuit breaker ivale nje endaweni engavumelani.
Okwesine, ungayilungisa kanjani i-reverse power phenomenon yamayunithi afanayo?
Uma amasethi amabili ejeneretha engasebenzi, kuzoba nomehluko wemvamisa kanye nomehluko we-voltage phakathi kwamasethi amabili. Futhi kuthuluzi lokuqapha lamayunithi amabili (i-ammeter, imitha yamandla, imitha ye-power factor), isimo sangempela samandla aphambene siyabonakaliswa, esinye amandla aphambene abangelwa isivinini esingaguquki (imvamisa), esinye amandla aphambene abangelwa yi-voltage engalingani, elungiswa kanje:
