Kusho Ukuthini Ukulahlekelwa Kwe-Generator-of-Excitation Protection? (Ingxenye 1)

Isethulo Sokuvikela Ukulahlekelwa Kokuvusa Injabulo Isivikelo Sokulahlekelwa Kokuzithokozisa kuwuhlobo lokuvikelwa kokudluliselwa kwejeneretha. Isho ukunyamalala kungazelelwe noma ingxenye yesasasa lejeneretha. Lapho i-generator ilahlekelwa injabulo ngokuphelele, amandla amanje ajabulisayo azobola kancane kancane aze afike ku-zero. Uma inani elingu-δ lidlula i-engeli yomkhawulo wokuzinza, ijeneretha ilahlekelwa ukuvumelanisa nesistimu yamandla. Ngalesi sikhathi, idivayisi yokuvikela i-generator isebenza ku-generator outlet circuit breaker ukuze inqamule i-generator kugridi yamandla, ivimbele ukulimala ku-generator nokuqinisekisa ukusebenza okuzinzile kwegridi yamandla. Lolu hlobo lokuvikela lubizwa ngokuthi ukuvikelwa kokulahlekelwa yinjabulo.

Ngokuvamile, i-voltage relay isetshenziswa njengento yokuvala kumjikelezo we-rotor, futhi i-impedance yokulinganisa isethwe ngokusho kombuthano obalulekile ongaphandle kwesinyathelo njengesisekelo sesenzo. Umbandela we-impedance kutheminali yokukhiqiza uyisisekelo esiyinhloko sokuvikela ukulahlekelwa kwe-excitation ye-generator. Uma kuhlangatshezwana nombandela wokuqina omile kanye nesimiso se-voltage ye-rotor ephansi kuhlangatshezwana nayo, kusho ukuthi ijeneretha ilahlekelwe ukujabula nokuzinza. Imishini yokuvikela i-generator izothumela ngokushesha isignali yokungazinzi, futhi i-generator izonqanyulwa ngemva kwesikhathi sokulibaziseka esimisiwe.

Umbandela wokuzinza onganyakazi nawo ungasetshenziswa uwedwa ukuze ugibele ijeneretha. Uma i-voltage ye-rotor ephansi idlula inani elibekiwe lokuvikela, idivayisi yokuvikela izothumela isignali yokulahlekelwa kokuvusa. Uma idlula ibanga ledivayisi yokuvikela, idivayisi yokuvikela ijeneretha izonqamula iphutha ngokushesha. Lo mbandela ungabikezela ukuthi ijeneretha izolahlekelwa ukuzinza ngenxa yokulahlekelwa ukuvuthwa, ukuze kuthathwe izinyathelo ezenziwa ngesandla kusenesikhathi ngaphambi kokuba i-generator ilahlekelwe ukuzinza ukuze kuvinjelwe ingozi ekukhuleni.

✽ Umdwebo Owuhlelo Wedivayisi Yokuvikela Isipele Sejeneretha - Ukulahleka Kokuvikela Okujabulisayo

✽ Isimiso Sokuvikela Ukulahlekelwa-Injabulo

Ukuvikelwa kokulahlekelwa kwe-excitation kuphendula ekusebenzeni kwe-asynchronous okubangelwa amaphutha kumjikelezo we-generator excitation futhi kusebenzisa umbuthano we-asynchronous impedance.

Umbandela wesenzo uthi:

Lapho: U-U1 kanye ne-I1 amavolthemu alandelanayo ephozithivu futhi awamanje ngokulandelana, i-UN ivolumu elinganiselwe yejeneretha (57.7V), okusho ukuthi iyinani lesibili elilinganiselwe lejeneretha, i-Xd inani leyunithi ngayinye yokusabela okuhambisanayo kwejeneretha, futhi i-X'd iyinani leyunithi ngayinye yokusabela kwesikhashana komshini.

Ngokuthembeka, umbandela osizayo uyengezwa: U2 <0.1UN, lapho i-UN iyi-voltage elinganiselwe yejeneretha (57.7V).

Ukuvikelwa kuzokhubeka kuphela uma zombili lezi zimo zifinyelelwa. Isivikelo sisethwe ngemikhawulo yesikhathi emibili, engasethwa ngokuhlukana. Ngokuvamile, umkhawulo wesikhathi sokuqala usetshenziselwa ukunciphisa amandla okukhiphayo futhi ushintshele ekuvusweni kwekhophi yasenqolobaneni, futhi umkhawulo wesikhathi sesibili usetshenziselwa ukunqamula ijeneretha nokucisha inkambu kazibuthe.

Vimba Umdwebo Wesimiso Sokuvikela Ukulahlekelwa-Injabulo

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