Qhov no yog ib lo lus nug ntau tus neeg muaj, thiab cov lus teb yog qhov yooj yim heev: txawm tias koj tab tom tswj hwm cov kab ntau lawm, cov ntaub ntawv chaw, lossis lub chaw tsim hluav taws xob photovoltaic, cov tsib cov cim qhia tseem ceeb no -kev sib raug zoo, flicker, tsis txaus, sag, thiab zaus- yuav tsum tau saib xyuas. Lawv ua haujlwm zoo li kev kuaj xyuas kev noj qab haus huv, ntsuas qhov tseeb ntawm daim phiaj hluav taws xob los ntawm qhov sib txawv. Hauv qab no, peb yuav rhuav tshem cov ntsiab lus no ib los ntawm ib qho, siv rooj plaub uas peb tau daws.
Harmonics yog qhov tseem ceeb siab -frequency distortions superimposed ntawm tus qauv sinusoidal voltage thiab tam sim no. Qhov ntau uas tsis yog- cov khoom tawm hauv ib lub Hoobkas- xws li inverters, hloov cov khoom siv hluav taws xob, thiab loj - lub peev xwm UPS tshuab- qhov "dirtier" lub waveform ua. Rau cov ntawm peb ua hauj lwm ntawm relay tiv thaiv kev daws teeb meem, cov teeb meem tshwm sim los ntawm harmonics tsis txwv rau nruab nrab kab overheating los yog luv luv transformer thiab capacitor lifespans; hnyav dua, lawv tuaj yeem cuam tshuam loj rau kev txiav txim siab tiv thaiv. Thib peb harmonics ntws los ntawm cov kab nruab nrab feem ntau ua rau xoom-ib ntus overcurrent relays mus rau qhov tsis tseeb, cuam tshuam cov khoom siv hluav taws xob uas yuav tsum tsis txhob mus. Yog li ntawd, peb cov kev tiv thaiv digital terminals suav tag nrho cov kev cuam tshuam kev sib haum xeeb hauv lub sijhawm tiag tiag, sib cais cov khoom sib haum xeeb los ntawm kev txhaum tam sim no kom tsis txhob muaj qhov yuam kev thiab pab txheeb xyuas qhov chaw ntawm kev sib haum xeeb.
Lo lus "flicker" yuav zoo li tsis paub, tab sis qhov tshwm sim yeej paub zoo - teeb flickering erratically, ua rau lub qhov muag mob tom qab ntev raug. Flicker qhia txog kev hloov pauv sai thiab rov ua dua ntawm qhov voltage amplitude, feem ntau tshwm sim los ntawm kev cuam tshuam cov khoom xws li hluav taws xob arc rauv los yog cov tshuab vuam loj heev rov qab rub lub zog los ntawm kev faib tawm. Nyob rau hauv precision machining, semiconductor ntim, thiab kev kho mob imaging ib puag ncig, cov millisecond - theem voltage fluctuations tuaj yeem rhuav tshem tag nrho cov khoom lag luam. Peb tau tsim luv luv - lub sij hawm flicker kev ntsuam xyuas raws li IEC cov qauv rau hauv peb qhov hluav taws xob relays. Thaum cov nqi sib tw nce mus txog qhov txwv, nws ceeb toom cov neeg ua haujlwm saib xyuas ua ntej qhov xwm txheej zoo tshwm sim, muab txoj hauv kev ua kom muaj txiaj ntsig zoo tshaj rau kev tshaj tawm - teeb meem teeb meem.
Kev tsis txaus ntseeg feem ntau yog qhov qis dua, qeeb - ua tus tua neeg. Ib qho zoo tagnrho peb -theem system muaj qhov sib npaug ntawm amplitudes thiab 120-degree theem sib txawv. Txawm li cas los xij, hauv kev muaj tiag, ntau ib zaug -theem loads, aging kev sib txuas, thiab ib zaug -theem fuse tsis ua haujlwm cuam tshuam qhov nyiaj tshuav no. Kev tsis sib haum xeeb ua rau qhov tsis zoo -ib ntu sib nqus teb hauv lub cev muaj zog, ua rau ob zaug lub zog- zaus tam sim no, ua rau hauv cheeb tsam rotor overheating-ib qho overheating uas cov pa tiv thaiv tsis tuaj yeem ntes tau. Peb tau ntsib ntau zaus ntawm chav tsev twj tso kua mis rov ua dua, cov hauv paus ntsiab lus tsis tu ncua yog peb -theem voltage tsis txaus siab tshaj 3%. Yog li ntawd, hauv peb cov cuab yeej tiv thaiv kev sib koom ua ke, peb tau suav nrog qhov tsis zoo- ntu ntu tam sim no los ua ib qho kev tiv thaiv cais tshwj xeeb los hais txog hom "zaum tam sim no," daws teeb meem ntau lub cev tsis muaj zog ntawm qhov chaw.
Voltage sags yog qhov teeb meem ntau dua rau cov chaw tsim khoom dua li lub zog hluav taws xob ntev. xob laim tawm tsam, tsob ntoo ntoo kov cov kab nyiaj siv ua haujlwm, luv luv hauv cov kev cob qhia uas nyob ib sab, thiab txawm tias qhov pib ncaj qha ntawm cov motors loj tuaj yeem ua rau qhov hluav taws xob poob qis dua 10% ntawm tus nqi ntsuas nyob rau hauv ib nrab ntawm lub voj voog, kav ntev li kaum mus rau pua pua milliseconds. Hmoov tsis zoo, kev tiv thaiv undervoltage ntawm PLCs, contactors, thiab zaus converters mus ncig ua si hauv qhov tam sim no, kaw tag nrho cov kab ntau lawm, tseem tsis muaj luv luv - Circuit Court tam sim no tuaj yeem pom hauv cov ntaub ntawv ua txhaum. Peb cov cuab yeej ntsuas hluav taws xob sib xyaw ua ke sag tolerance nkhaus cov qauv, kom meej meej qhov txawv ntawm qhov ua tsis tiav uas yuav tsum tau mus rau tam sim ntawd thiab kev cuam tshuam ib ntus uas tuaj yeem "tshem tawm," yog li txo qis kev tsim khoom tsis tsim nyog.
Ntau zaus, ntawm qhov tod tes, tas li qhia txog qhov sib npaug ntawm lub zog ntawm kev tsim hluav taws xob thiab kev siv. Hauv 50Hz lossis 60Hz systems, txawm tias qhov sib txawv ntawm 0.5Hz qhia txog kev ntxhov siab hauv kab sib chaws-tej zaum yuav muaj lub tshuab hluav taws xob loj tripping lossis lub zog tsis txaus nyob rau hauv ib daim phiaj. Ntev me me sib txawv tuaj yeem ua rau synchronous motor ceev drift thiab turbine hniav qaug zog vim resonance. Rau kev tiv thaiv relay, zaus relays feem ntau yog siv rau Islanded nrhiav pom ntawm cov khoom siv hluav taws xob faib thiab ua kab kawg ntawm kev tiv thaiv qis - zaus load shedding. Nyob rau hauv lub yav dhau los kob microgrid upgrade project, ib tug diesel generator tswv xeev mam li nco dheev oscillated, sai hloov ntawm 49.2 thiab 50.4Hz. Tsuas yog los ntawm kev txheeb xyuas qhov txawv txav ntawm qhov hloov pauv tau peb tuaj yeem siv lub tswv yim sib txuam hauv lub sijhawm, tiv thaiv kom tsis txhob muaj teeb meem hla tag nrho cov kob.
Cov tsib qhov ntsuas no yeej tsis nyob ib leeg; deterioration nyob rau hauv ib cheeb tsam feem ntau ua rau ib tug chain reaction. Peb koom ua ke kev tsom xam kev sib raug zoo, kev ntsuas flicker, cov txheej txheem tsis sib xws, kev kaw suab, thiab kev tiv thaiv zaus mus rau ib qho kev tiv thaiv ib leeg. Peb lub hom phiaj yog los muab cov kev txiav txim txiav txim siab zoo dua li tsis cuam tshuam nrog ntau lub tswb tawg. Yog tias koj tab tom teeb tsa lub phiaj xwm kev tiv thaiv rau lub xaib, muab cov ntsiab lus hais txog cov khoom thauj khoom raug thiab cov khoom siv hluav taws xob tsim hluav taws xob yog li peb tuaj yeem nrhiav qhov tsim nyog tshaj plaws kev teeb tsa thiab kev tiv thaiv ua ke.
