Txoj Cai Ua Haujlwm thiab Cov Txheej Txheem Tseem Ceeb ntawm Thyristor Switched Capacitor (TSC)
Apr 13, 2026| Thyristor Hloov Capacitor (TSC)yog ib tug dynamic reactive zog them nyiaj ntaus ntawv raws li tus contactless switching yam ntxwv ntawm thyristors. Nws lub hauv paus ntsiab lus tseem ceeb yog kom hloov pauv cov tsev txhab nyiaj capacitor mus rau hauv lossis tawm ntawm daim phiaj hluav taws xob los ntawm kev siv xoom xoom- hla kev ua kom muaj peev xwm ntawm thyristors, paub txog cov nyiaj them poob haujlwm rau daim phiaj hluav taws xob reactive. Piv nrog rau cov tsoos mechanically switched capacitors, TSC muaj qhov zoo zoo xws li lub neej ua haujlwm ntev, kev hloov tsis sib cuag, muaj zog tiv thaiv kev ntxhov siab, thiab cov lus teb ceev ceev. Tsis tas li ntawd, los ntawm kev tswj xyuas qhov hloov pauv tam sim no, nws tuaj yeem cuam tshuam qhov cuam tshuam tam sim no thaum lub sijhawm hloov pauv, ua kom muaj kev ruaj ntseg ntawm daim phiaj hluav taws xob thiab khoom siv.
1. Classification of TSC
1.1 Kev faib tawm los ntawm qib Voltage
Raws li cov qib siv hluav taws xob, TSC tuaj yeem muab faib ua qhov qis -voltage them thiab siab-voltage them, raws li cov lus qhia dav dav rau cov khoom siv hluav taws xob reactive hauv kev lag luam fais fab:
Tsawg-voltage Compensation: Feem ntau siv tau rau 0.4kV (400V) qis -voltage tis networks, npog reactive fais fab kev them nyiaj yuav tsum tau rau voltage theem ntawm 1kV thiab hauv qab no, feem ntau yog siv nyob rau hauv kawg-load sab xws li muaj kev cob qhia thiab cov tsev lag luam;
High -Voltage Compensation: Cov nyiaj them poob haujlwm yog txuas ncaj qha mus rau qhov siab -voltage power grid, feem ntau tsom rau qib voltage ntawm 6kV, 10kV, thiab 35kV. Nws yog tsim rau centralized reactive fais fab them nyiaj scenarios xws li substations thiab cov kauj ruam dav dav - down chaw nres tsheb nyob rau hauv industrial parks, los daws cov reactive fais fab tsis txaus nyob rau hauv siab -voltage fais fab daim phiaj.
1.2 Kev faib tawm los ntawm Daim Ntawv Thov Scope
Raws li cov nyiaj tau los thiab cov khoom siv, TSC tuaj yeem muab faib ua cov nyiaj them poob haujlwm thiab cov nyiaj them nruab nrab, uas muaj kev faib tawm meej thiab cov ntawv thov ntxiv:
Load Compensation: Muab cov phiaj xwm dynamic them nyiaj rau ib leeg lossis ib pab pawg ntawm cov khoom hloov pauv tshwj xeeb (xws li, hluav taws xob arc rauv, zaus hloov pauv, hluav taws xob vuam tshuab) los cuam tshuam cov hluav taws xob hluav taws xob cuam tshuam los ntawm kev thauj khoom hauv lub sijhawm, tiv thaiv kev hloov pauv hluav taws xob los ntawm kev cuam tshuam cov kab hluav taws xob zoo;
Centralized Compensation: Nruab ntawm lub hwj huam mov hubs ntawm daim phiaj fais fab (piv txwv li, substation busbar sab), nws nqa tawm kev them nyiaj rau lub zog reactive ntawm tag nrho cov fais fab mov, daws qhov teeb meem ntawm tag nrho cov reactive zog hloov nyob rau hauv daim phiaj, txhim kho daim phiaj fais fab, thiab txo cov kab poob.
2. Kev khiav hauj lwm hauv xeev thiab Main Circuit Court tsim ntawm TSC
2.1 Kev khiav hauj lwm lub xeev
TSC tsuas muaj ob lub xeev kev khiav hauj lwm: hloov- hauv xeev thiab hloov- tawm lub xeev, nrog cov txheej txheem ua haujlwm meej thiab tswj tau rau ob lub xeev:
● Hloov-hauv Xeev: Lub bidirectional thyristor (los yog anti-parallel thyristor pawg) ua, thiab lub txhab nyiaj capacitor tau txuas nrog rau kab sib chaws. TSC outputs capacitive reactive zog rau daim phiaj, offsetting inductive reactive zog nyob rau hauv daim phiaj thiab txhim kho lub hwj chim yam;
● Hloov- tawm hauv Xeev: Lub bidirectional thyristor (los yog anti-parallel thyristor pawg) raug thaiv, disconnecting lub txhab nyiaj capacitor los ntawm daim phiaj. Lub sijhawm no, lub txhab nyiaj capacitor khaws cov seem seem nyob ze rau qhov hluav taws xob siab tshaj plaws, thiab TSC ceg tsis tso tawm lub zog rov qab rau hauv daim phiaj. Ib lub tshuab tso tawm tshwj xeeb yuav tsum tau siv los tso tawm qhov hluav taws xob seem kom ntseeg tau tias cov cuab yeej muaj kev nyab xeeb.
2.2 Cov Lus Qhia Tseem Ceeb rau Kev Tsim Hluav Taws Xob
TSC lub ntsiab kev tsim hluav taws xob yuav tsum ua kom tau raws li peb qhov yuav tsum tau ua: nce nrawm nrawm, cuam tshuam tam sim no, thiab tswj kev sib haum xeeb. Cov thev naus laus zis tseem ceeb yog kom ua tiav xoom-inrush tam sim no hloov, zam kev puas tsuaj rau cov khoom tseem ceeb xws li thyristors thiab capacitors tshwm sim los ntawm inrush tam sim no thaum hloov.
Hauv cov ntawv thov kev lag luam, hom kev sib txuas ntawm TSC yog los tiv thaiv -cov kab sib txuas thyristor (sib npaug rau bidirectional thyristor), uas ua rau muaj kev sib txawv ntawm ob sab thiab thaiv hauv AC circuits, hloov mus rau cov yam ntxwv ntawm kev ua haujlwm ntawm lub zog - zaus AC zog. Hauv qhov sib piv, thyristor-diode anti- cov kab txuas txuas txuas tsuas tuaj yeem tswj tau tam sim no hauv ib qho kev taw qhia, ua tsis tau raws li qhov xav tau hloov pauv hauv AC scenarios. Nws yog ib qho tsis yog - cov qauv tseem ceeb, tsuas yog siv rau hauv kev kho tshwj xeeb thiab hloov cov xwm txheej sib xyaw, thiab tsis pom zoo raws li cov qauv siv hluav taws xob TSC.
3. Core Wiring Modes thiab Performance Comparison of TSC
Nyob rau hauv cov pa TSC systems, qhov kev tiv thaiv -parallel thyristor thaiv kab yog tib lub ntsiab lus tseem ceeb, nrog nws cov yam ntxwv ua tau zoo thiab ceev faj raws li hauv qab no:
● Ua Haujlwm Mechanism: Ob qhov kev tiv thaiv -cov thyristors sib npaug sib npaug sib txuas los txuas thiab txiav tawm cov nyiaj them rov qab, hloov mus rau qhov zoo thiab qhov tsis zoo ib nrab- lub voj voog kev ua haujlwm ntawm lub zog - zaus AC zog;
● Kev ntseeg tau: Nws muaj kev ntseeg siab tag nrho. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias yog tias ib qho thyristor puas thiab luv luv -circuited, nws yuav ua rau ib nrab ntawm -nthwv dej ntawm cov ceg ntoo, tsim cov khoom DC thiab cov dej ntws ntau dhau, uas yuav hlawv tawm ntawm lub txhab nyiaj capacitor thiab lwm yam khoom. Yog li ntawd, ua kom tiav qhov kev ua txhaum thiab kev tiv thaiv cov cuab yeej yuav tsum tau teeb tsa hauv cov ntawv thov;
● Rov qab Voltage Withstand muaj peev xwm: Lub ncov rov qab voltage uas tau los ntawm lub thyristor valve yog sib npaug rau lub ncov kab sib chaws voltage tom qab qhov seem voltage ntawm lub capacitor raug tso tawm, ua raws li qhov ntsuas voltage xaiv ntawm thyristor Cheebtsam.
Cov tsis yog -mainstream thyristor-diode anti- cov qauv sib npaug muaj kev lag luam zoo thiab kev ua haujlwm yooj yim, tab sis nws tsis tuaj yeem paub txog kev tswj xyuas tam sim no bidirectional, thiab nws cov lus teb ceev tsis tuaj yeem ua tau raws li qhov xav tau ntawm cov nyiaj tau los. Ntxiv mus, lub ncov rov qab voltage uas los ntawm lub thyristor valve tuaj yeem ncav cuag ob npaug ntawm cov kab hluav taws xob siab tshaj plaws, xav tau kev xaiv ntau dua. Nws tsuas yog siv tau rau cov xwm txheej tshwj xeeb nrog cov kev xav tau tsawg thiab muaj peev xwm me me, thiab tsis suav nrog hauv cov qauv tsim TSC.
4. Kev xaiv thiab kev ua haujlwm ntawm Series Reactors
Nyob rau hauv TSC lub ntsiab Circuit Court, series reactors yog indispensable core Cheebtsam. Lawv lub luag haujlwm tseem ceeb yog txhawm rau txwv kev hloov pauv tam sim no, txwv tsis pub siab - xaj kev sib haum xeeb, thiab txwv luv luv - Circuit Court tam sim no, ua kom muaj kev nyab xeeb thiab ruaj khov ntawm lub kaw lus.
4.1 Mechanism ntawm Series Reactors
Cov xwm txheej txawv txav xws li thyristor cuav tshwm sim thiab kab sib chaws ua txhaum yuav ua rau muaj kev cuam tshuam tam sim no thaum lub txhab nyiaj capacitor hloov mus. Series reactors tuaj yeem txwv qhov amplitude ntawm inrush tam sim no los ntawm inductive impedance. Meanwhile, reactors thiab capacitor banks tsim ib lub LC lim Circuit Court, uas muaj peev xwm ua tau zoo suppress high - txiav txim harmonics nyob rau hauv daim phiaj (tshwj xeeb tshaj yog 3rd thiab 5th harmonics), zam tiv thaiv kev puas tsuaj los ntawm harmonic amplification.
Nco tseg: Tom qab txuas cov reactors series, qhov hluav taws xob thoob plaws lub capacitor yuav nce ntxiv vim qhov kev poob qis thiab kev sib haum xeeb ntawm kev ua kom muaj zog. Yog li, qhov ntsuas hluav taws xob ntawm lub capacitor yuav tsum siab tshaj qhov hluav taws xob hluav taws xob. Piv txwv li, capacitors nrog lub ntsuas hluav taws xob ntawm 450V feem ntau yog xaiv rau 0.4kV daim phiaj, thiab cov capacitors nrog qhov ntsuas hluav taws xob ntawm 11 / √3 kV rau 10kV daim phiaj.
4.2 Hom thiab Kev Xaiv Cov Cai ntawm Reactors
Ob hom reactors yog siv nyob rau hauv TSC systems: cua-core reactors thiab hlau-core reactors. Lawv muaj qhov sib txawv ntawm kev ua tau zoo, thiab kev xaiv yuav tsum tau txiav txim siab raws li tus nqi nyiaj txiag thiab kev xav tau:
● Cua-Core Reactors: Lawv muaj cov txiaj ntsig zoo tam sim no txwv, siab linearity, tsis yooj yim rau saturate los yog tsim kom muaj cua sov nyob rau hauv cov xwm txheej zoo sib xws, thiab muaj kev ua haujlwm ruaj khov, tab sis nrog tus nqi siab. Lawv tsim nyog rau siab -voltage, loj- muaj peev xwm TSC systems thiab cov xwm txheej uas yuav tsum tau muaj siab rau kev them nyiaj raug thiab ruaj khov;
● Hlau-core Reactors: Lawv muaj tus nqi qis thiab ua tau raws li cov cai tam sim no txwv, tab sis tsis zoo linearity. Lawv yog cov nquag saturation thiab cua sov nyob rau hauv harmonic teebmeem, thiab lawv tam sim no limiting nyhuv yog heev cuam tshuam los ntawm kev ua hauj lwm tej yam kev mob. Lawv tsim nyog rau qis-voltage, me- muaj peev xwm TSC systems thiab cov xwm txheej nrog cov nqi tswj nruj.
5. Main Circuit Wiring Modes ntawm TSC
Raws li hom kev sib txuas ntawm thyristor li qub thiab lub tsev txhab nyiaj capacitor, lub ntsiab hluav taws xob thaiv kab hluav taws xob ntawm TSC feem ntau suav nrog peb -theem tswj delta kev twb kev txuas thiab lub hnub qub kev sib txuas, txhua qhov muaj feem cuam tshuam. Tsis muaj qhov tseem ceeb "delta-lub hnub qub sib txuas" (qhov kev sib txuas ua ke no tsuas yog kev siv theoretical thiab tsis siv rau hauv kev ua lag luam):
● Kev sib txuas ntawm Delta: Feem ntau yog siv nyob rau hauv qis -voltage TSC systems (piv txwv li, 0.4kV), siv peb -theem kev them nyiaj hom. Nws muaj cov txiaj ntsig zoo thiab kev xaim yooj yim, tuaj yeem cuam tshuam peb -theem tsis sib npaug reactive zog, thiab tsim nyog rau reactive zog them nyiaj thaum kawg loads;
● Kev Txuas Hnub Qub: Feem ntau yog siv nyob rau hauv siab -voltage TSC systems (piv txwv li, 6kV, 10kV, 35kV), feem ntau nrog ungrounded neutral point. Nws tuaj yeem tiv thaiv kev sib kis ntawm ib zaug -faults theem, muaj kev nyab xeeb kev ua haujlwm siab, thiab tsim nyog rau substation centralized them scenarios.
6. Inrush Current Control rau TSC Hloov
Raws li cov yam ntxwv tseem ceeb ntawm cov khoom siv hluav taws xob uas "voltage tsis tuaj yeem hloov pauv sai sai", qhov sib txawv loj ntawm daim phiaj hluav taws xob thiab cov hluav taws xob hluav taws xob seem (suav nrog amplitude thiab theem) thaum lub sij hawm TSC hloov yuav tsim tam sim no inrush tam sim no, hem tiv thaiv kev nyab xeeb. Yog li, inrush tam sim no tswj yog lub hauv paus ntawm TSC switching tswj.
● Inrush Tam Sim No Txiav Txim Tus Qauv: Cov qauv kev lag luam dav dav yog tias thaum qhov sib piv ntawm inrush tam sim no mus rau qhov qub tsis tu ncua - lub xeev kev khiav hauj lwm tam sim no ntawm lub capacitor yog tsawg dua 1.2 mus rau 1.5 zaug, nws suav hais tias tsis muaj teeb meem rau thyristors, capacitors thiab lwm yam khoom. Yog tias qhov sib piv ntau dua qhov no, qhov kev hloov pauv tswj lub tswv yim yuav tsum tau ua kom zoo dua lossis tam sim no txwv kev ntsuas ntxiv;
● Zero-Inrush Switching Implementation: Qhov zoo tshaj plaws hloov lub xeev yog "zero-hla triggering". Tom qab hloov chaw nres, lub capacitor khaws cov kab hluav taws xob siab kawg. Lub thyristor yog triggered thiab ua nyob rau ntawm xoom- hla taw tes qhov twg cov kab hluav taws xob voltage thiab capacitor residual voltage yog sib npaug ntawm amplitude thiab theem, nrog ze - xoom inrush tam sim no. Thaum lub sij hawm hloov tawm, thyristor raug thaiv ntawm xoom tam sim no- hla taw tes kom tsis txhob overvoltage.
7. TSC Kev Tshawb Fawb thiab Tswj System
Lub luag haujlwm tseem ceeb ntawm TSC nrhiav kom tau qhov system yog txhawm rau sau cov khoom siv hluav taws xob cuam tshuam ntawm daim phiaj hluav taws xob thiab cov khoom thauj khoom hauv lub sijhawm, muab lub hauv paus raug rau kev hloov pauv. Nws tsuas yog muaj cov qauv coj mus kuaj, qhov ntsuas hluav taws xob thiab RMS tam sim no suav nrog, thiab lub zog xav tau thiab reactive zog suav module.
Kev tswj hwm thev naus laus zis hauv cov ntawv thov kev lag luam tam sim no tau txais microcomputer-raws li synchronous theem tswj thev naus laus zis thiab hloov kho thyristor triggering thev naus laus zis. Cov txheej txheem ua haujlwm yog: qhov ntsuas qhov system ntes cov amplitude thiab theem cov ntaub ntawv ntawm qhov hluav taws xob hla lub capacitor thiab daim phiaj hluav taws xob hauv lub sijhawm. Thaum ob qhov sib npaug hauv amplitude thiab zoo ib yam nyob rau hauv theem, lub thyristor yog triggered tam sim ntawd mus cuag xoom-inrush switching ntawm lub capacitor. Thaum lub sij hawm hloov tawm, thyristor tau cia li thaiv ntawm qhov xoom tam sim no - hla taw tes, yam tsis muaj ua ntej - them lub capacitor.
Lus Cim Tseem Ceeb: Series reactors thiab cov khoom siv tshwj xeeb tso tawm (tso tawm coils lossis cov khoom tawm tawm) yog cov khoom tseem ceeb hauv TSC systems thiab tsis tuaj yeem muab tshem tawm. Series reactors yog siv rau kev txwv tam sim no thiab kev sib haum xeeb, thiab cov cuab yeej tso tawm tso tawm qhov hluav taws xob seem tom qab hloov pauv kom tsis txhob muaj kev nyab xeeb muaj feem cuam tshuam los ntawm qhov hluav taws xob seem. Tsuas yog me me -muaj peev xwm qis-voltage TSC tuaj yeem ua kom yooj yim rau cov khoom siv tawm hauv cov kev ua haujlwm tshwj xeeb, thaum siab -voltage thiab loj- peev TSC yuav tsum tau nruab nrog kev txwv tam sim no thiab cov khoom tawm.
8. Cov lus xaus
Raws li cov khoom siv hluav taws xob muaj txiaj ntsig thiab nrawm nrawm, TSC muaj qhov zoo ntawm kev hloov pauv tsis sib cuag, cov lus teb ceev ceev thiab kev ua haujlwm txhim khu kev qha. Nws tuaj yeem daws tau qhov teeb meem ntawm daim phiaj reactive zog hloov pauv, txhim kho daim phiaj hluav taws xob zoo thiab txo cov kab poob. Nws cov ntsiab lus tseem ceeb muaj xws li xoom- hla kev tswj hwm, kev cuam tshuam tam sim no, kev xaiv lub tshuab hluav taws xob thiab hloov kho cov kab hluav taws xob. Hauv kev tsim qauv thiab kev siv, nws yog ib qho tsim nyog yuav tsum ua raws li cov qauv kev lag luam fais fab, tsis txhob nkag siab yuam kev hauv kev xaiv thiab tswj cov tswv yim, thiab xyuas kom muaj kev nyab xeeb, ruaj khov thiab ua haujlwm zoo ntawm lub cev.