Neutral Grounding Resistor yog ib qho tseem ceeb tiv thaiv cov cuab yeej siv nyob rau hauv nruab nrab- thiab qis-voltage tis tes hauj lwm, tus kheej lub hwj chim noj, thiab substations rau industrial thiab mining lag luam. Nws yog feem ntau siv rau 10 kV thiab 35 kV low-tam sim no grounding systems. Nws cov haujlwm tseem ceeb suav nrog kev txwv tsis raug tam sim no, overvoltage suppression, muaj peev xwm stabilization, thiab kev tiv thaiv kev ua kom zoo tshaj plaws los lav kev nyab xeeb thiab ruaj khov lub zog hluav taws xob ua haujlwm thiab daws teeb meem kev ua haujlwm tsis zoo ntawm cov av qis tam sim no. Ua ntej tshaj plaws, nws lub luag haujlwm tseem ceeb yog txwv ib theem-rau-hauv av txhaum tam sim no. Ib-theem-rau-hauv av tsis ua haujlwm suav nrog ntau dua 80% ntawm tag nrho cov kab sib faib ua txhaum. Yog tsis muaj qhov nruab nrab Grounding Resistor, dawb-flowing capacitive grounding tam sim no tuaj yeem ncav cuag ntau pua amperes, ncaj qha hlawv tawm cable terminals, switchgears, thiab ntsuas transformers thiab txawm ua rau hluav taws kub. Tom qab lub Neutral Grounding Resistor tau muab tso rau hauv kev pabcuam, qhov kev ua txhaum tam sim no tuaj yeem raug txwv tsis pub nyob rau hauv qhov kev nyab xeeb preset, yog li ntawd cuam tshuam kev puas tsuaj rau cov cuab yeej tseem ceeb los ntawm qhov txhaum tam sim no zoo heev.
Qhov thib ob, lub cuab yeej suppresses ntau yam txawv txav overvoltages. Thaum ib-theem-rau-hauv av faults tshwm sim nyob rau hauv low-tam sim no grounding systems, intermittent arcing av faults yuav tshwm sim. Rov qab extinction thiab reignition ntawm hluav taws xob arcs tsim arc overvoltage ob peb zaug siab tshaj qhov ntsuas voltage. Lub sij hawm ntev raug rhuav tshem cov rwb thaiv tsev tsis muaj zog ntawm cov kab thiab cov khoom siv thiab ua rau muaj kev cuam tshuam ntau yam hauv av. Tsis tas li ntawd, resonant overvoltage yuav zoo siab thaum qhov system inductance thiab capacitance tsis sib haum, tsis tu ncua kev puas tsuaj insulators thiab surge arresters. Lub Nruab Nrab Grounding Resistor sai sai dissipates lub zog tsim los ntawm overvoltage, dampens voltage oscillation, thiab confines system overvoltage qis dua 2.5 npaug ntawm qhov ntsuas voltage. Nws zam kev tiv thaiv kev laus thiab kev puas tsuaj thiab txuas ntxiv lub neej kev pab cuam ntawm cov khoom siv fais fab.
Thirdly, nws stabilizes system muaj peev xwm thiab optimizes kev tiv thaiv kev ua tau zoo. Raws li kev ua haujlwm ib txwm muaj, Neutral Grounding Resistor txhim kho qhov nruab nrab-point peev xwm thiab tiv thaiv kev hloov pauv nruab nrab los ntawm qhov tsis sib npaug ntawm peb-theem loads thiab asymmetric kab tsis. Nws tiv thaiv kev sib txawv ntau dhau ntawm peb-theem voltages thiab tswj cov khoom siv hluav taws xob ruaj khov rau cov neeg siv kawg. Thaum faults tshwm sim, tus resistor generates ruaj khov fault-tam sim no signals los daws qhov teeb meem ntawm tsis muaj zog fault signals uas cuam tshuam kev txheeb xyuas los ntawm kev tiv thaiv relays nyob rau hauv low-tam sim no grounding systems. Zero-sequence tiv thaiv thiab fault-line-xaiv cov cuab yeej tuaj yeem ua sai thiab raug kom cais cov kab tsis raug thiab nrhiav cov ntsiab lus tsis raug, txo qhov teeb meem luv luv thiab lub sijhawm siv hluav taws xob.
Tsis tas li ntawd, cov cuab yeej tshem tawm cov kev pheej hmoo resonance thiab txhim kho tus kheej thiab khoom siv kev nyab xeeb. Thaum tsis muaj-load lossis lub teeb-load ua haujlwm ntawm daim phiaj hluav taws xob, ferromagnetic resonance yuav tshwm sim ntawm voltage transformers thiab kab capacitances thiab coj txawv txawv voltage fluctuations. Lub Neutral Grounding Resistor hloov cov xwm txheej rau resonance thiab tshem tawm ferromagnetic resonance. Tsis tas li ntawd, nws sai sai tshem tawm cov nqi hluav taws xob nyob rau hauv qhov teeb meem txhaum cai, txo cov kev pheej hmoo ntawm cov khoom siv hluav taws xob thiab cov kab, thiab txo qis kev phom sij ntawm hluav taws xob poob siab thiab xau. Nws haum rau cov nroj tsuag kev lag luam, thaj chaw nyob, thiab cov chaw ua lag luam uas xav tau cov khoom siv hluav taws xob siab thiab kev nyab xeeb thiab ua cov cuab yeej tiv thaiv tseem ceeb rau kev ua haujlwm ruaj ntseg-grid.