I-Parallel Operation Control System
Incazelo Yomkhiqizo
Okokuqala, yiziphi izimo zokusebenza okufanayo kwamasethi e-generator?
Yonke inqubo yokubeka ijeneretha ekusebenzeni okuhambisanayo ibizwa ngokuthi yi-parallel operation. Isethi yokuqala ye-generator izosebenza, i-voltage ithunyelwa ebhasini, kanti enye i-generator isethwe ngemva kokuqala, futhi isethi ye-generator yangaphambilini, kufanele ibe sesikhathini sokuvala, isethi ye-generator akufanele ibonakale i-impulse current eyingozi, i-shaft ayikho. ngaphansi komthelela ongazelelwe. Ngemuva kokuvala, i-rotor kufanele idonswe ngokushesha ukuze ivumelanise. (okungukuthi, isivinini se-rotor silingana nesivinini esilinganiselwe) Ngakho-ke, isethi ye-generator kufanele ihlangabezane nezimo ezilandelayo:
1. Inani elisebenzayo kanye ne-waveform ye-voltage yesethi ye-generator kufanele ifane.
2. Isigaba sikagesi samajeneretha amabili siyefana.
3. Imvamisa yamasethi amabili ejeneretha iyafana.
4. Ukulandelana kwesigaba kwamasethi amabili akhiqiza ugesi kuyahambisana.
Okwesibili, iyiphi indlela ye-quasi-synchronous juxtaposition yamasethi ejeneretha? Indlela yokwenza ama-juxtapositions ngesikhathi esisodwa?
I-Quasi-synchronous isikhathi esiqondile. Ngendlela ye-quasi-synchronous yokusebenza okuhambisanayo, i-voltage yesethi yejeneretha kufanele ifane, imvamisa iyafana futhi isigaba siyavumelana, esingagadwa ngama-voltmeter amabili, amamitha ama-frequency amabili kanye nezinkomba ezivumelanisiwe nezingezona ukuvumelanisa ezifakwe i-synchronous disk, kanye nezinyathelo zokusebenza ezihambisanayo zimi kanje:
Ukushintsha komthwalo wesethi yejeneretha eyodwa kuvaliwe, futhi i-voltage ithunyelwa kubha yebhasi, kuyilapho enye iyunithi isesimweni sokulinda.
Vala isiqalo sesikhathi esifanayo, lungisa isivinini sesethi yejeneretha yokulinda, ukuze ilingane noma isondele isivinini esivumelanayo (umehluko wefrequency nenye iyunithi phakathi kwesigamu somjikelezo), lungisa i-voltage yesethi ye-generator standby, ukuze isondele ku-voltage yesinye isethi ye-generator, lapho i-frequency ne-voltage ifana, isivinini sokujikeleza kwetafula le-synchronous sihamba kancane futhi sihamba kancane, futhi ukukhanya kwenkomba nakho kukhanya futhi kumnyama ngesikhathi esifanayo; Uma isigaba seyunithi ezohlanganiswa sifana nesenye iyunithi, isikhombi semitha esivumelanayo sibonisa indawo ephakathi nendawo eyisikwele ephezulu, futhi isibani esivumelanayo sifiphele. Uma umehluko wesigaba phakathi kweyunithi ezohlanganiswa nenye iyunithi inkulu, imitha yokuvumelanisa ikhomba endaweni emaphakathi ngezansi, futhi isibani sokuvumelanisa sivuliwe ngalesi sikhathi. Uma i-synchronous meter pointer izungeza njengokuya kwewashi, ikhombisa ukuthi imvamisa ye-synchronous generator ingaphezulu kweyenye iyunithi. Isivinini sesethi yejeneretha ebekwe eceleni kufanele sehliswe, futhi isivinini sesethi yejeneretha ebekwe eceleni kufanele sinyuswe lapho iphoyinti lewashi lizungeziswa ngokuphikisana newashi. Lapho iphoyinti lewashi lizungeza kancane endleleni yewashi futhi iphoyinti lisondela endaweni efanayo, i-circuit breaker yeyunithi ezohlanganiswa iyavalwa ngokushesha, ukuze amasethi amabili ejeneretha ahambisane. Amaswishi e-chronograph akhishwe ngapha nangapha kanye nama-chronoswitches ahlobene.
Okwesithathu, yini okufanele inakwe lapho kwenziwa i-quasi-synchronous juxtaposition yesethi yejeneretha?
I-Quasi-synchronous parallel iwukusebenza okwenziwa ngesandla, noma ngabe ukusebenza kushelela futhi isipiliyoni somsebenzisi sinobudlelwano obukhulu, ukuze kuvinjwe ukufana okuhlukile kokuvumelanisa, amacala amathathu alandelayo awavunyelwe ukuvala.
1. Lapho i-pointer yethebula le-synchronous ibonakala i-jumping phenomenon, ayivunyelwe ukuvala, ngoba kungase kube nesenzakalo sekhasethi ngaphakathi kwetafula le-synchronous, elingabonisi izimo ezifanele ze-juxtaposition.
2. Uma ithebula le-synchronous lizungeza ngokushesha okukhulu, libonisa ukuthi umehluko wemvamisa phakathi kwesethi ye-generator kanye nesethi ye-generator inkulu kakhulu, ngoba isikhathi sokuvala se-circuit breaker kunzima ukuyiqonda, ngokuvamile i-circuit breaker ayivaliwe ngesikhathi esifanayo, ngakho-ke akuvunyelwe ukuvala ngalesi sikhathi.
3. Uma i-pointer yewashi ima ngesikhathi esifanayo, ayivunyelwe ukuvala. Lokhu kungenxa yokuthi uma imvamisa yesinye se-generator isethi ishintsha ngokuzumayo phakathi nenqubo yokuvala, kungenzeka ukwenza i-breaker circuit ivele ivale endaweni engavumelani.
Okwesine, ungayilungisa kanjani i-reverse power phenomenon yamayunithi ahambisanayo?
Uma amasethi amabili okukhiqiza engenzi lutho, kuzoba nomehluko wemvamisa kanye nomehluko we-voltage phakathi kwamasethi amabili. Futhi kuthuluzi lokuqapha lamayunithi amabili (i-ammeter, imitha yamandla, imitha yesici samandla), isimo sangempela samandla aphambene siyaboniswa, elinye amandla aphambene abangelwa isivinini esingahambisani (imvamisa), enye amandla aphambene abangelwa ukungalingani. I-voltage, elungiswa ngale ndlela elandelayo:
