Core Arc Extinguishing Txoj Cai
Arc tso tawm yog qhov nyuaj tshaj plaws rau DC Circuit Court breakers. Tsis zoo li AC circuits nrog ntuj tam sim no xoom- hla cov ntsiab lus, DC arcs muaj ntau dua. Cov kev daws teeb meem tseem ceeb suav nrog peb cov kauj ruam tseem ceeb: ua ntej, cov neeg kho tshuab kev sib cuag sai sai rau (ntev) lub arc; thib ob, insulating media (xws li SF6 gas) txias thiab cais cov arc; thib peb, auxiliary circuits qhia rov qab tam sim no los tsim cov ntsiab lus xoom xoom, ua kom muaj txiaj ntsig zoo arc extinguishing. Cov khoom tseem ceeb suav nrog arc extinguishing chambers thiab tshwj xeeb alloy hu ncaj qha txiav txim siab extinguishing efficiency.
Main Technology Paths
Mechanical DC Circuit Breakers
Raws li cov txheej txheem kev sib cuag ntawm cov neeg kho tshuab, lawv muaj cov qauv tsim yooj yim thiab tus nqi qis. Txawm li cas los xij, lawv qhov kev qhib ceev (ntaus milliseconds) kuj qeeb, ua rau lawv haum rau qis -voltage DC scenarios xws li tsev neeg microgrids.
Khoom -Lub Xeev DC Circuit Breakers
Ua los ntawm cov khoom siv hluav taws xob hluav taws xob zoo li IGBTs, lawv ua tiav microsecond - theem qhib ceev thiab tsis muaj kev sib cuag. Cov fwj tseem ceeb yog cov nqi siab thiab cov teeb meem kub ntxhov, uas txwv cov ntawv thov loj - txawm tias ua tau zoo heev.
Hybrid DC Circuit Breakers
Kev sib xyaw ua ke ntawm cov khoom siv thiab cov khoom siv- lub xeev qhov zoo: cov khoom- lub xeev modules paub txog kev tawg tam sim no, thaum cov neeg kho tshuab tiv tauj tam sim no kom txo tau lub zog siv. Qhov kev sib npaug ntawm qhov kev ua tau zoo thiab tus nqi ua rau lawv qhov kev xaiv tseem ceeb rau nruab nrab thiab siab -voltage DC daim phiaj.
Evolution Trends
Ua ntej, kev txhim kho kev ua tau zoo: Cov ntaub ntawv tshiab xws li nanocomposite insulating cov ntaub ntawv thiab dav -bandgap semiconductors yuav txhim kho kev tawg thiab ceev. Thib ob, miniaturization thiab kev koom ua ke: Modular tsim yoog raws qhov kev xav tau ntawm cov ntaub ntawv chaw zov me nyuam thiab them pawg. Thib peb, kev hloov pauv hluav taws xob tshiab: Kev ua kom zoo tshaj plaws yuav txhim kho kev hloov pauv mus rau cov khoom siv hluav taws xob txuas ntxiv dua tshiab xws li photovoltaics thiab cua zog, txhawb nqa lub zog nqus.
Xaus
DC Circuit Court breakers yog tus yuam sij rau kev nyab xeeb ntawm DC daim phiaj. Lawv txoj kev loj hlob tau hloov zuj zus los ntawm ib qho kev tsim kho tshuab mus rau hybrid systems, thiab yuav txuas ntxiv mus rau kev ua haujlwm siab, miniaturization thiab kev txawj ntse. Nruam thev naus laus zis innovation nyob rau hauv daim teb no yuav muaj zog txhawb kev hloov pauv ntawm lub ntiaj teb lub zog system.
