Muzochitika zazikulu monga malo osungira deta, mafakitale akuluakulu, zipatala, ndi malo opangira magetsi adzidzidzi,ma jenereta a dizilo amphamvu kwambiriamagwira ntchito ngati gwero lalikulu lamagetsi kuti atsimikizire kuti magetsi akupezeka mosalekeza komanso kuchita ntchito yofunika kwambiri yamagetsi adzidzidzi panthawi ya kuzima kwa magetsi. Kugwira ntchito kokhazikika komanso kotetezeka kwa ma jenereta amphamvu kumakhudzana mwachindunji ndi kudalirika kwa makina onse amagetsi komanso chitetezo cha ogwira ntchito ndi zida. Anthu ambiri amadziwa bwino injini, jenereta, ndi makina owongolera a ma jenereta, koma nthawi zambiri amanyalanyaza chipangizo chothandizira chosawoneka bwino koma chofunikira -nduna yolimba yolimba(yomwe imatchedwa kabati yolimbana ndi nthaka). Imagwira ntchito ngati "valavu yotetezera chitetezo" komanso "firewall yolakwika" ya makina amagetsi a jenereta, ndi chipangizo chofunikira kwambiri mumakina oteteza nthaka a majenereta a dizilo amphamvu kwambiri, kuteteza mwakachetechete chitetezo cha makina a jenereta ndi makina onse amagetsi.
1. Kodi Kabati Yolimbana ndi Kugwa ndi Chiyani?
Kabati yolimbana ndi nthaka ya seti ya jenereta ya dizilo yamagetsi amphamvu ndi seti yonse ya zida zotetezera nthaka zomwe zakonzedwa makamaka kuti zigwirizane ndi ma seti a jenereta yamagetsi amphamvu a 6kV ~ 20kV. Imakhala ndi ma resistors amphamvu kwambiri, zinthu zothandizira zoteteza kutentha, zigawo zowunikira zolakwika, makabati otsekedwa ndi zina. Njira yake yoyikira ndiyofunika kwambiri: mbali imodzi imalumikizidwa ndi malo osalowerera ndale a jenereta, ndipo mbali inayo imalumikizidwa ndi netiweki yapadera yolumikizira nthaka ya fakitale. Kwenikweni, imamanga njira yokhazikika komanso yotetezeka yolumikizira malo osalowerera ndale ama jenereta a dizilo amphamvu kwambiri.
Mosiyana ndi njira yosavuta yokhazikitsira pansi mwachindunji ya ma jenereta otsika mphamvu, ma jenereta amphamvu a dizilo amaletsedwa mwamphamvu kuti asagwere pansi mwachindunji kapena kugwira ntchito mopanda nthaka. Kugwere pansi mwachindunji kumayambitsa vuto lalikulu ndikuwotcha nthawi yomweyo ma stator windings a jenereta; kugwere pansi kwathunthu kumabweretsa zoopsa zobisika monga overvoltage ya dongosolo ndi continuous arc discharge. Pogwiritsa ntchito resistors zofanana bwino kuti zigwere pansi mopanda malo, kabati yolimbana ndi nthaka imalinganiza bwino chitetezo chogwira ntchito ndi kukhazikika kwa ma jenereta amphamvu, zomwe zimapangitsa kuti ikhale chipangizo chodzitetezera chogwirizana ndi mawonekedwe a makina amphamvu amphamvu.
2. Mfundo Yofunika Kwambiri Yogwirira Ntchito ya Kabati Yotsutsa Kukhazikika
Pa nthawi yogwira ntchito bwino komanso mwachizolowezi ya jenereta yamagetsi amphamvu, magetsi a dongosolo amakhala okhazikika popanda zolakwika za nthaka, ndipo mphamvu ya neutral point imakhala pafupifupi zero. Kabati yolimbana ndi nthaka imakhalabe yokhazikika popanda magetsi omwe amadutsa, zomwe zimapangitsa kuti magetsi asasokonezedwe kapena kutayika kwa magetsi pakupanga ndi kutumiza kwa chipangizocho.
Pamenevuto la kukhazikika kwa gawo limodzi(vuto lofala kwambiri m'makina amphamvu kwambiri, makamaka chifukwa cha kukalamba kwa insulation, kuwonongeka kwa mzere, kugunda kwa mphezi, ndi kukhudzana ndi zinthu zakunja) kumachitika panthawi yogwira ntchito ya unit, mphamvu ya gawo lolakwika imatsika kwambiri, mphamvu ya neutral point imakwera modabwitsa, ndipo mphamvu ya capacitive grounding fault imapangidwa mu system. Pakadali pano, kabati yolimbana ndi nthaka imayamba kugwira ntchito nthawi yomweyo. Resistor yotsutsana imalumikizidwa mu fault loop kuti isinthe mtundu ndi kukula kwa fault current, kuchepetsa mphamvu yamagetsi ndikugwiritsa ntchito mphamvu kudzera mu resistance, kuletsa neutral point voltage yosagwirizana, ndikupereka zizindikiro zokhazikika za fault signals kuti ziteteze relay kuti zizindikire fault early and discharge, zomwe zimaletsa kukula kwa fault.
3. Ntchito Zinayi Zazikulu za Kabati Yotsutsa Kukhazikika
3.1 Chepetsani Molondola Vuto la Mphamvu Yamagetsi ndi Kuteteza Zida Zapakati
Iyi ndiye ntchito yofunika kwambiri komanso yofunika kwambiri ya kabati yolimbana ndi nthaka. Chitsulo choteteza kugwedezeka cha stator chozungulira chama jenereta amphamvu kwambirindi yolondola komanso yofooka. Ngati vuto la nthaka ya gawo limodzi, popanda kuchepetsa mphamvu yamagetsi yolimbana ndi kukana, mphamvu yamagetsi yamagetsi ya system imakwera nthawi yomweyo kufika pa mazana kapena zikwi za ma ampere. Mphamvu yayikulu yamagetsi yamagetsi imapanga ma arc otentha kwambiri omwe amawotcha mwachindunji ndikuphwanya maziko achitsulo cha stator ndi kutchinjiriza kwa ma winding. Muzochitika zochepa, zimayambitsa kuwonongeka kwa kutchinjiriza ndi kuwonongeka kwa magwiridwe antchito a chipangizocho; muzochitika zazikulu, zimapangitsa kuti maziko achitsulo asungunuke ndikuwotcha, zomwe zimapangitsa kuti zida zitayike ndi ma yuan masauzande ambiri komanso nthawi yayitali yokonza.
Kabati yolimbana ndi nthaka imatha kufanana ndi kukana molondola malinga ndi mphamvu ya unit, ndikuchepetsa mphamvu ya nthaka mkati mwa mulingo wotetezeka wa jenereta yamagetsi amphamvu (nthawi zambiri imayendetsedwa mkati mwa 50A ya mayunitsi amagetsi amphamvu). Sikuti imaletsa kutopa kwa zida chifukwa cha mphamvu yayikulu, komanso imasunga mphamvu yokwanira yoyambitsa zida zotetezera, ndikukwaniritsa chitetezo chabwino kwambiri cha "kuchepetsa mphamvu yamagetsi popanda kuletsa alamu" ndikukulitsa kwambiri moyo wa ntchito wa ma jenereta.
3.2 Pewani Ma Arcs ndi Overvoltage Kuti Mupewe Ngozi Zadongosolo
Mu makina amphamvu amphamvu kwambiri, zolakwika za pansi pa gawo limodzi zimatha kupanga ma arc osinthasintha. Kuzimiririka mobwerezabwereza ndi kuyatsanso ma arc kudzayambitsa kupitirira kwa mphamvu kwa nthawi yochepa (kupitirira kwa mphamvu ya arc) kuwirikiza katatu mpaka kasanu kuposa mphamvu ya gawo. Mphamvu yapamwamba yotereyi idzawononga kapangidwe ka insulation ka zida zothandizira monga mizere, ma switchgear ndi ma transformer, zomwe zimayambitsa zolakwika za cascading kuphatikizapo ma multi-point short circuits ndi kuphulika kwa zida, zomwe zimaika pachiwopsezo chitetezo cha makina onse amagetsi.
Mphamvu yotsutsa yomwe imayambitsidwa ndi kabati yotsutsa nthaka imatha kuchepetsa kusiyana kwa gawo la mphamvu yamagetsi yamagetsi, kuchepetsa kwambiri mwayi woyatsanso arc, ndikuzimitsa mwachangu ma arc olakwika a grounding. Pakadali pano, imatha kuletsa bwino kupitirira kwa mphamvu yamagetsi yamagetsi ndikuwongolera kusinthasintha kwa magetsi mkati mwa malire otetezeka, kuchotseratu chiopsezo cha kusweka kwa insulation ndi kuzima kwamagetsi kwakukulu komwe kumachitika chifukwa cha kupitirira kwa mphamvu yamagetsi, ndikuwonetsetsa kuti makina amphamvu yamagetsi akukhazikika.
3.3 Konzani Chitetezo cha Relay ndikuzindikira Malo Olondola Olakwika
Ngati mfundo yosagwirizana ya chipangizo chamagetsi chapamwamba yatsegulidwa, mphamvu yamagetsi yomwe imapangidwa ndi zolakwika za nthaka imakhala yofooka kwambiri, zomwe zimapangitsa kuti zida zotetezera zotumizira zikhale zovuta kuzindikira molondola zizindikiro za zolakwika. Izi zimapangitsa kuti zida zotetezera zisagwiritsidwe ntchito bwino kapena kulephera kuzizindikira, kulephera kuzizindikira nthawi yake, komanso kukulitsa zolakwika zazing'ono kukhala ngozi zazikulu.
Kabati yolimbana ndi nthaka ikayamba kugwira ntchito, imapereka mphamvu yokhazikika komanso yowongolera yolimbana ndi vuto la makinawa, zomwe zimathandiza kuti zida zotetezera kuti zigwire zizindikiro za vuto mwachangu komanso momveka bwino, ndikuweruza molondola malo ndi mtundu wa zolakwika. Imatha kuzindikira malo olondola a alamu ndi mzere wa zolakwika zazing'ono za chipangizocho, ndikuyambitsa chitetezo chokhota kuti chichepetse vuto ngati pali zolakwika zazikulu kuti tipewe kufalikira kwa zolakwika, zomwe zimapangitsa kuti magwiridwe antchito achotse zolakwika komanso chitetezo champhamvu cha makinawo.
3.4 Tetezani Chitetezo Cha Munthu Ndipo Pangani Chotchinga Cholimba cha Chitetezo cha Mphamvu
Pansi pa vuto la ma seti a jenereta okhala ndi mphamvu zambiri, mphamvu yamagetsi yosazolowereka ndi mphamvu yotuluka idzatumizidwa ku zipolopolo za zida ndi mizere yoyambira, zomwe zimabweretsa zoopsa zazikulu za mphamvu yamagetsi yokwera kwa ogwira ntchito panthawi yowunikira ndi kukonza. Mwa kukhazikitsa mphamvu ya neutral point ndikuchepetsa mphamvu yotuluka kwa mphamvu yoyambira, kabati yolimbana ndi nthaka imachepetsa mphamvu yamagetsi yoyambira ya zipolopolo za zida, imawongolera mphamvu yamagetsi yolumikizana ndi mphamvu yolowera mkati mwa chitetezo cha anthu, imachotsa zoopsa zamphamvu zamagetsi zomwe zimadza chifukwa cha kapangidwe ka zida, ndikumanga chotchinga cholimba choteteza chitetezo kwa ogwira ntchito ndi okonza.
4. Zifukwa Zofunikira Zokhazikitsira Makabati Olimba Pa Ma Unit Amphamvu Kwambiri
Ma jenereta ambiri okhala ndi mphamvu zochepa safuna makabati oletsa kutsika kwa nthaka, zomwe zikusonyeza kuti anthu ambiri sadziwa bwino za chipangizochi. Komabe,Ma jenereta a dizilo amphamvu kwambiri a 6kV kapena kupitirira apo ayenera kukhala ndi makabati oteteza nthakaMakina otsika mphamvu zamagetsi amakhala ndi mphamvu zochepa zamagetsi komanso mphamvu zochepa zamagetsi, ndipo kukhazikika mwachindunji kumatha kukwaniritsa zofunikira zachitetezo. Mosiyana ndi zimenezi, makina amphamvu mphamvu zamagetsi amakhala ndi mphamvu zambiri zamagetsi komanso mphamvu zambiri, ndipo kusakhala ndi chitetezo cholimba kumabweretsa zoopsa zopitirira muyeso za kutopa kwa zida, kugwa kwa makina ndi kugwedezeka kwa magetsi.
Mu zinthu zoyambira monga malo osungira deta, zipinda zachipatala, mizere yopangira mafakitale ndi malo opangira magetsi mwadzidzidzi, kukhazikika kwa magetsi a ma jenereta a dizilo amphamvu kwambiri kumagwirizana mwachindunji ndi magwiridwe antchito abwinobwino komanso moyo watsiku ndi tsiku. Monga chipangizo choteteza chopanda mphamvu, kabati yolimbana ndi nthaka siifuna kugwiritsa ntchito pamanja kapena magetsi akunja, ndipo imayankha yokha nthawi yeniyeni ikalakwitsa kwambiri. Ndi chipangizo cholimba chomwe sichingasinthidwe mu dongosolo loteteza nthaka la ma jenereta amphamvu komanso chofunikira kwambiri pa chitetezo cha mphamvu zamafakitale.
5. Mapeto: Kabati Kakang'ono Kokhala ndi Ntchito Zabwino
Monga chipangizo chothandizira chomwe chimawoneka chosavuta, kabati yolimba pansi imagwira ntchito ngati chitetezo chosawoneka cha ma jenereta a dizilo amphamvu kwambiri. Sichitenga nawo mbali popanga magetsi kapena kukhudza magetsi wamba, koma imatha kupewa ngozi zosiyanasiyana zachitetezo cha magetsi kudzera mu kuchepetsa mphamvu zamagetsi, kuzimiririka kwa arc, kukhazikika kwa magetsi, chitetezo cha zida ndi chitetezo chaumwini panthawi yovuta kwambiri yamavuto mwadzidzidzi, kuonetsetsa kuti ma jenereta amagetsi amphamvu amagwira ntchito bwino kwa nthawi yayitali komanso motetezeka.
Pa makina opangira magetsi a dizilo amphamvu kwambiri, kabati yolimba pansi si chinthu chowonjezera chomwe mungasankhe, koma ndi chipangizo chofunikira chomwe chimatsimikizira moyo wa ntchito ya zida, kukhazikika kwa makina ndi chitetezo cha munthu, chomwe chimagwira ntchito ngati mwala wofunikira kwambiri pakugwira ntchito bwino kwa makina opangira magetsi amphamvu kwambiri.
Nthawi yotumizira: Juni-10-2026
