Functions thiab Classifications ntawm Reactors

Reactor tseem hu ua inductor. Thaum tus neeg xyuas pib muaj zog, nws tsim ib qho chaw sib nqus hauv ib qho chaw uas nws nyob. Yog li ntawd, tag nrho cov tam sim no - nqa cov khoom siv hluav taws xob muaj cov khoom siv hluav taws xob dav dav. Txawm li cas los xij, qhov ntev ncaj energized conductor muaj tsawg inductance thiab ua rau lub zog sib nqus tsis muaj zog. Nyob rau hauv kev xyaum, reactors yog tsim los ntawm winding hlau mus rau hauv ib tug solenoid, hu ua ib tug Cua -core Reactor; Qee lub sij hawm cov tub ntxhais hlau tau muab tso rau hauv lub solenoid kom nce inductance, ua rau hlau -core Reactor.

 

Muaj nuj nqi ntawm Reactors

1.Nrog rau kev nthuav dav ntawm daim phiaj hluav taws xob muaj peev xwm, qhov ntsuas luv luv - lub peev xwm ntawm lub kaw lus nce nrawm. Piv txwv li, ntawm 35kV qis-voltage sab ntawm 500kV substation, tus nqi siab tshaj plaws ntawm peb-theem symmetrical luv-circuit tam sim no mus txog 50kA. Txhawm rau txwv luv luv -circuit tam sim no nyob rau hauv cov kab sib kis thiab tiv thaiv cov khoom siv hluav taws xob, cov reactors yuav tsum tau nruab. Reactors txo luv luv-circuit tam sim no thiab ua kom qhov system voltage ruaj khov thaum lub caij luv luv.

2.Installing Damping Reactor (Series Reactor) nyob rau hauv lub capacitor Circuit Court suppresses inrush tam sim no thaum lub capacitor Circuit Court energized. Nws kuj tsim ib qho kev sib haum xeeb nrog lub txhab nyiaj capacitor los lim tawm ntau yam kev sib haum xeeb.

⑴.Piv txwv li, nyob rau hauv lub capacitor Circuit Court ntawm ib tug 35kV reactive fais fab nyiaj pab ntaus ntawv ntawm 500kV substation, damping reactors yuav tsum tau txwv capacitor switching inrush tam sim no thiab suppress system harmonics. Txhawm rau tiv thaiv 3rd harmonics, 35kV rated voltage, 26.2mH rated inductance, 350A rated tam sim no qhuav- hom cua-core ib leeg-theem sab nraum zoov damping reactor yog siv, tsim 3rd harmonic resonant (filter) Circuit Court nrog 2.52Mvar.

⑵.Ib yam li ntawd, txhawm rau txhawm rau tiv thaiv 5th thiab siab dua kev sib haum xeeb, 35kV, 9.2mH, 382A ib leeg-theem sab nraum zoov damping reactor tsim ib lub voj voog resonant rau 5th thiab siab dua harmonics nrog 2.52Mvar capacitor. Nco ntsoov tias kev siv thiab kev qhia tshwj xeeb ntawm damping reactors tau teev nyob rau hauv lub teb chaws tus qauv GB 10229-88 Reactors thiab thoob ntiaj teb tus qauv IEC 289-88.

 

Lub luag haujlwm ntawm Reactors hauv Reactive Power Compensation Devices

Txoj kev loj hlob ntawm 500kV lub zog hluav taws xob, hluav taws xob railways, thiab cov hlau loj thiab steel hauv paus yuav tsum muaj kev teeb tsa.Static Var Compensators (SVC) nyob rau hauv loj hub substations.

SVCs teb sai sai rau kev hloov pauv (lub sij hawm teb ib txwm 0.02-0.04s) thiab muab lub zog ua haujlwm zoo thiab kev tswj xyuas hluav taws xob. Lawv tswj cov kab hluav taws xob ruaj khov, muaj txiaj ntsig zoo rau lub cev muaj zog reactive zog, txo qis kev hloov pauv ntawm qhov hluav taws xob, tswj peb - theem sib npaug, thiab damp sub- synchronous oscillations.

SVCs ntsia rau ntawm daim phiaj hubs kuj txo cov overvoltages ib ntus. Cov kab hluav taws xob loj yog li ntawd yuav tsum muaj qhov loj thiab nruab nrab - cov chaw nres tsheb loj los teeb tsa cov reactors rau lub zos capacitive reactive fais fab nyiaj them thiab ntsuas kom muaj kev nyab xeeb.

Reactors yog cov khoom tseem ceeb ntawm cov khoom siv hluav taws xob reactive. Shunt Reactors muab inductive reactance los nqus cov peev txheej reactive ntau dhau, uas yog qhov tseem ceeb thaum lub sij hawm qis qis thaum ntxov thiab lig hmo ntuj.

Nyob rau hauv cov ntaub ntawv no, kis kab mob reactive poob yog tsawg; vim muaj cov nyhuv capacitance, generated reactive hwj chim tshaj noj reactive zog, tawm hauv seem capacitive reactive zog. Shunt reactors yuav tsum nqus cov nyiaj seem no kom tswj tau qhov sib npaug thiab qhov voltage; txwv tsis pub, overvoltage endangers system kev nyab xeeb.

Txhawm rau txo cov thyristor suav thiab txuag SVC kev nqis peev, muaj qhov sib txawv kom ua kom tiavThyristor Hloov Capacitor (TSC)thiab Thyristor Controlled Reactor (TCR) muaj peev xwm.

Qee qhov SVCs tshem tawm TSC ceg thiab siv Fixed Capacitor (FC) cov tsev txhab nyiaj hloov.

Yuav kom tuav tau tus, tsis tu ncua reactive zog thiab voltage tswj, tag nrho shunt reactor muaj peev xwm yuav tsum tau nce.

Yog li, kev siv reactor txuas ntxiv mus ntxiv. Damping reactors nyob rau hauv series nrog capacitor circuits kuj muab reactive zog them ntxiv rau txwv inrush tam sim no thiab harmonics.

 

Daim ntawv thov ntawm Reactors nyob rau hauv zaus Converters

Muaj nuj nqi ntawm Input Reactors

Input reactorstxwv tam sim no surges los ntawm daim phiaj voltage fluctuations thiab switching overvoltages, smooth voltage spikes nyob rau hauv cov khoom, thiab kho commutation-induced voltage defects nyob rau hauv choj rectifiers. Lawv tiv thaiv cov zaus hloov pauv, txhim kho lub zog zoo, thaiv kab sib chaws cuam tshuam, thiab txo qis kev sib raug zoo ntawm cov khoom siv rectifier.

Muaj nuj nqi ntawm cov zis Reactors

Tso zis reactorsFeem ntau them nyiaj rau kev faib cov peev txheej ntev (50-200m) cables, tshem tawm cov khoom sib haum xeeb tam sim no, tsa cov zis ntau zaus impedance, txwv tsis pub dv / dt, txo cov hluav taws xob ntau zaus tam sim no, tiv thaiv cov hloov pauv, thiab cov khoom siv qis qis. Capacitors nyob rau hauv lub hwj chim them nyiaj yog qhov yooj yim rau harmonic voltage thiab tam sim no, uas ua rau tsis ua hauj lwm thiab degraded hwj chim yam, yog li ntawd harmonic kev kho mob yuav tsum tau.

Kev ua haujlwm ntawm DC Reactors

DC reactors txuas nrog ntawm DC rectifier thiab inverter ntu ntawm qhov sib txawv-zaus tsav. Lawv lub hom phiaj tseem ceeb yog txwv tsis pub AC ripple superimposed ntawm DC tam sim no, tswj cov rectifier txuas ntxiv tam sim no, txo cov pulsation tam sim no, stabilize inverter lag luam, thiab txhim kho lub zog hloov pauv.

 

Hom ntawm Reactors

Shunt Reactor

Cov reactors siv rau lub tshuab hluav taws xob tag nrho-load kuaj yog cov qauv ntawm shunt reactors. Vim muaj zog txaus nyiam los ntawm kev sib nqus sib nqus ntawm cov segmented cores, core-type reactors feem ntau yog hais txog 10dB noisier tshaj qhov sib npaug-muaj peev xwm transformers.

Shunt reactors nqa AC tam sim no thiab them nyiaj rau qhov system capacitive reactance. Lawv feem ntau yog txuas nrog thyristors rau kev ua haujlwm tsis tu ncua tam sim no. Lawv txo hwj chim-frequency overvoltage los ntawm long-line capacitance teebmeem nyob rau hauv tsis muaj-load los yog lub teeb-load tej yam kev mob, txhim kho voltage thiab reactive fais fab kev faib, txo kab poob, txo cov theem nrab arc tam sim no, accelerate theem nrab arc extinction, txhim kho tsis siv neeg reclosing ua tau zoo npaum li cas, thiab yog dav siv nyob rau hauv ntev lub zog kis tau tus mob thiab tis.

Series Reactor

Series reactors nqa AC tam sim no thiab txuas nrog cov nyiaj them nqi hluav taws xob los tsim cov resonance rau lub xeev kev sib haum xeeb (5th, 7th, 11th, 13th). Lawv feem ntau yog 5-6% reactors nrog siab inductance.

Series reactors yog cov cuab yeej txhawb nqa tseem ceeb rau lub zog hluav taws xob reactive zog them nyiaj. Thaum ua ke nrog lub hwj chim capacitors, lawv ua tau zoo tiv thaiv kab sib chaws sib haum xeeb, txwv kev hloov pauv tam sim no thiab kev khiav hauj lwm overvoltages, txhim kho qhov hluav taws xob waveform, nce lub zog, thiab txhim khu kev ruaj ntseg ntawm cov capacitors thiab lwm yam khoom siv fais fab.

Tuned Reactor

Tuned reactorsnqa AC tam sim no thiab txuas txuas nrog cov capacitors los tsim cov resonance series rau ib qho kev sib haum xeeb nth (feem ntau n=5,7,11,13,19) kom nqus tau qhov kev sib haum xeeb.

Tso zis Reactor

Output reactors txwv capacitive them tam sim no nyob rau hauv lub cev muaj zog cables thiab txwv tsis pub lub cev muaj zog winding voltage nce tus nqi mus rau hauv 540V / μs. Lawv raug pom zoo thaum cable ntev ntawm 4-90kW converter thiab lub cev muaj zog tshaj 50m. Lawv kuj soften lub steepness ntawm converter tso zis voltage thiab txo kev cuam tshuam rau inverter Cheebtsam xws li IGBTs.

Output Reactor Instructions: Txhawm rau kom lub converter-to-motor nrug, siv kom tsim nyog thicker, siab-rwb thaiv tsev, nyiam dua unshielded cables.

Output Reactor Nta:

1.Suitable rau reactive zog them nyiaj thiab harmonic tswj.

2.Mainly compensates long-line faib capacitance thiab suppresses cov zis harmonic tam sim no.

3.Tshwj xeeb tiv thaiv cov zaus hloov pauv, txhim kho lub zog ua haujlwm, thaiv cov kab sib txuas sib cuam tshuam, thiab txo cov pa phem los ntawm cov khoom siv rectifier.

Input Reactor

Input reactors txwv daim phiaj-sab voltage poob thaum lub sij hawm converter commutation, suppress harmonics, decouple parallel converter pawg, thiab txwv tam sim no surges los ntawm voltage kauj ruam los yog system ua hauj lwm. Thaum qhov sib piv ntawm daim phiaj luv luv-circuit muaj peev xwm hloov tau ntau tshaj 33: 1, qhov txheeb ze voltage poob ntawm input reactors yog 2% rau ib leeg-quadrant thiab 4% rau plaub-quadrant ua haujlwm.

Input reactors raug tso cai thaum daim phiaj luv-circuit voltage tshaj 6%. 12-pulse rectifier units xav tau tsawg kawg ib daim phiaj-sab input reactor nrog 2% txheeb ze voltage poob. Cov tswv yim reactors yog dav siv nyob rau hauv industrial / Hoobkas automation systems, ntsia nruab nrab ntawm converters / ceev controllers thiab lub hwj chim mov los suppress surge voltages thiab tam sim no thiab attenuate siab thiab distorted harmonics.

Input Reactor Nta:

1.Suitable rau reactive zog them nyiaj thiab harmonic tswj.

2.Limits tam sim no surges los ntawm daim phiaj voltage fluctuations thiab switching overvoltages; lim cov harmonics los suppress waveform distortion.

3.Smooths voltage spikes nyob rau hauv lub hwj chim mov thiab kho commutation-induced voltage defects nyob rau hauv tus choj rectifiers.

Tam sim no - txwv Reactor

Tam sim no - txwv cov reactors feem ntau yog siv hauv cov kab xa tawm. Lawv feem ntau ntsia tau rau hauv series ntawm ceg feeders los ntawm tib lub busbar kom txwv feeder luv -circuit tam sim no thiab tuav busbar voltage thaum feeder faults.

Arc -Suppression Coil

Arc-suppression coils yog siv dav hauv 10kV–63kV resonant grounding systems. Vim tias muaj roj-dawb sib txawv hauv cov chaw nres tsheb, feem ntau arc-sab laug coils qis dua 35kV yog hom qhuav-casting.

Damping Reactor

(Feem ntau hu ua Series Reactor) Txuas nrog cov tsev txhab nyiaj capacitor lossis cov khoom siv ntom ntom kom txwv cov capacitor hloov pauv tam sim no. Zoo ib yam li tam sim no-limiting reactors. Filter reactors tsim resonant lim nrog lim capacitors, feem ntau rau 3rd mus rau 17th harmonic filtering los yog siab dua-kev txiav txim siab-pass filtering. Harmonic cov chaw muaj xws li DC transmission converter chaw nres tsheb, theem-tswj SVCs, nruab nrab/loj rectifiers, electrified railways, thiab tag nrho cov high-power thyristor-tswj hwj chim hluav taws xob circuits; cov no yuav tsum tau lim kom tsis txhob muaj kuab paug rau daim phiaj. Cov tub ceev xwm lub hwj chim qhia cov kev txwv kev sib haum xeeb.

Smoothing Reactor

Siv nyob rau hauv DC circuits tom qab rectification. Rectifier circuits muaj tus lej mem tes tas li, yog li tso zis DC voltage muaj ripple uas feem ntau ua rau muaj kev phom sij thiab yuav tsum raug tshem tawm los ntawm cov reactors smoothing. Tag nrho DC kis tau tus mob converter chaw nres tsheb yog nruab nrog smoothing reactors rau kwv yees zoo tagnrho DC. Lawv kuj tseem yog qhov tseem ceeb hauv thyristor-based DC hluav taws xob tsav. Raws li cov khoom tseem ceeb hauv rectifier circuits, smoothing reactors nyob rau hauv nruab nrab zaus fais fab mov feem ntau:

1. Txwv tsis pub luv-circuit tam sim no (ib txhij conduction thaum inverter thyristor commutation yog sib npaug rau luv luv Circuit Court; tsis muaj reactor ua rau luv luv).

2.Suppress nruab nrab-frequency Cheebtsam cuam tshuam rau lub mains fais fab mov.

3.Filter (rectifier tam sim no muaj AC; high-frequency AC muaj teeb meem dhau qhov inductance loj) kom rectifier tso zis tas li. Tsis tu ncua tam sim no ua rau xoom-tam sim no lub sij hawm, nres lub inverter choj thiab qhib lub rectifier choj.

4.Absorb reactive zog nyob rau hauv parallel inverter circuits; Lub zog khaws cia reactors yuav tsum muaj nyob rau hauv inverter input circuits.