Cov ntaub ntawv tseem ceeb ntawm cov neeg siv
Lub welded mesh Hoobkas tsuas yog tsim ntau yam welded mesh nplooj ntawv, laj kab nets, nyom nets, gabion nets, nuv nets, barbecue nets, luav tawb, thiab lwm yam. Lub tuam txhab cov khoom siv kab ntau lawm yog loj, nruab nrab thiab me welding tshuab, thiab cov transformers tis yog 1000 kVA thiab 1630 kVA transformers.Daim duab ntawm lub hwj chim mov system yog raws li nram no:
Cov ntaub ntawv ua haujlwm tiag tiag
Tag nrho lub zog ntawm lub tshuab vuam nrog 1000KVA transformer yog 1860KVA, qhov nruab nrab lub zog yog PF = 0.7, thiab qhov ua haujlwm hloov pauv tam sim no yog 1050-2700A.Lub zog tag nrho ntawm lub tshuab vuam nrog lub 630KVA transformer yog 930KVA, qhov nruab nrab lub zog yog PF = 0.7, thiab kev ua haujlwm hloov pauv tam sim no yog 570-1420A.
Power System Situation Analysis
Lub vuam tshuab fais fab mov feem ntau yog siv los nqis peev hauv qhov loj tam sim no, uas yog lub nra hnyav.Cov cuab yeej tsim muaj ntau qhov sib haum xeeb thaum ua haujlwm.Cov kev sib haum xeeb tam sim no uas yog cov khoom sib haum xeeb raug txhaj rau hauv daim phiaj hluav taws xob, thiab daim phiaj hluav taws xob impedance tsim cov hluav taws xob sib haum xeeb, ua rau cov kab hluav taws xob hluav taws xob thiab qhov cuam tshuam tam sim no cuam tshuam rau cov khoom siv hluav taws xob zoo thiab kev nyab xeeb ntawm kev ua haujlwm, ua rau cov kab poob thiab qhov hluav taws xob offset, thiab ua kom muaj zog.Yog li ntawd, nws yog ib qho tsim nyog yuav tau xaiv cov software uas muaj kev sib haum xeeb los tiv thaiv kev sib haum xeeb, them nyiaj rau cov khoom siv rov ua haujlwm, thiab txhim kho lub zog.
Lim reactive zog them nyiaj kho mob txoj kev npaj
Cov hom phiaj kev tswj hwm
Kev tsim cov khoom siv lim dej ua tau raws li qhov yuav tsum tau muaj ntawm kev sib haum xeeb kev sib tsoo thiab kev tswj xyuas lub zog reactive.
Raws li 0.4KV qhov system ua haujlwm, tom qab cov khoom siv lim dej tau muab tso rau hauv kev ua haujlwm, cov mem tes tam sim no raug txwv, thiab lub hli nruab nrab lub zog yog nyob ib puag ncig 0.92.
High-order harmonic resonance, resonance overvoltage, thiab overcurrent tshwm sim los ntawm kev txuas mus rau lub lim nyiaj them nyiaj ceg Circuit Court yuav tsis tshwm sim.
Tsim raws li tus qauv
Lub hwj chim zoo Public grid harmonics GB / T14519-1993
Lub zog zoo Voltage fluctuation thiab flicker GB12326-2000
General technical tej yam kev mob ntawm low-voltage reactive hwj chim them nyiaj ntaus ntawv GB / T 15576-1995
Tsawg-voltage reactive fais fab nyiaj them nyiaj ntaus ntawv JB / T 7115-1993
Reactive fais fab nyiaj them rau cov kev mob JB/T9663-1999 "Low-voltage reactive fais fab tsis siv neeg them nyiaj" los ntawm high-order harmonic tam sim no txwv tus nqi qis-voltage fais fab thiab cov khoom siv hluav taws xob GB / T17625.7-1998
Cov ntsiab lus Electrotechnical Fais Fab Capacitor GB / T 2900.16-1996
Tsawg voltage shunt capacitor GB / T 3983.1-1989
Reactor GB10229-88
IEC 289-88 Reactor Ua Haujlwm
Tsawg-voltage reactive fais fab nyiaj them nyiaj tswj kev txiav txim kev mob DL / T597-1996
Tsawg-voltage hluav taws xob tiv thaiv qib GB5013.1-1997
Tsawg-voltage ua tiav switchgear thiab tswj cov cuab yeej GB7251.1-1997
Cov tswv yim tsim
Raws li qhov xwm txheej ntawm kev lag luam, lub tuam txhab tau txiav txim siab txog lub zog ntawm cov khoom siv hluav taws xob thiab kev sib haum xeeb rau cov lim reactive fais fab kev them nyiaj ntawm lub tshuab vuam, thiab nruab ib lub lim reactive fais fab nyiaj them rau ntawm 0.4KV low-voltage sab ntawm lub lag luam. transformer rau suppress harmonics thiab compensate reactive zog los txhim kho lub hwj chim yam.
Thaum lub sijhawm ua haujlwm ntawm lub tshuab vuam, 3 zaug ntawm 150HZ, 5 zaug ntawm 250HZ thiab saum toj no harmonics raug tsim.Yog li ntawd, nyob rau hauv lub tsim ntawm lub reactive fais fab nyiaj them ntawm lub thib ob welding tshuab lim, zaus ntawm 150HZ, 250HZ thiab ib ncig yuav tsum tau tsim los xyuas kom meej tias lub lim them nyiaj voj yuav tsim nyog suppress lub mem tes tam sim no thaum compensating lub reactive load thiab txhim kho lub hwj chim. yam.
txoj haujlwm tsim
Lub zog tseem ceeb ntawm cov kab ntau lawm ntawm lub tshuab vuam thib ob sib tw nrog 1000 kVA transformer yog them los ntawm 0.7 txog 0.92.Cov cuab yeej lim dej Cov khoom siv nyiaj yuav tsum tau nruab nrog lub peev xwm ntawm 550 kVA.Lub 9 pawg ntawm cov capacitors nyob rau hauv theem splitting tau txais kev cob cog rua thiab txiav, txhua yam uas phim lub winding nyob rau hauv qab voltage sab ntawm lub transformer.Lub peev xwm hloov kho hauv chav kawm yog 25KVAR, uas tuaj yeem ua tau raws li ntau yam kev xav tau ntawm lub tshuab vuam thib ob.Lub zog tseem ceeb ntawm qhov thib ob-guarantee vuam tshuab txuam nrog 630 kVA transformer yog them los ntawm 0.7 txog 0.92.Cov khoom siv lim dej yuav tsum tau nruab nrog lub peev xwm ntawm 360 kVA.Lub 9 pawg ntawm cov capacitors nyob rau hauv theem splitting tau txais kev cob cog rua thiab txiav, txhua yam uas phim lub winding nyob rau hauv qab voltage sab ntawm lub transformer.Lub peev xwm hloov kho chav kawm yog 25KVAR, uas tuaj yeem ua tau raws li ntau lub zog xav tau ntawm cov kab ntau lawm.Qhov kev tsim no txaus los xyuas kom meej tias qhov hloov kho lub zog yog siab dua 0.92.
Kev tsom xam cov nyhuv tom qab kev teeb tsa ntawm cov nyiaj lim dej
Thaum lub Plaub Hlis 2010, lub lim reactive fais fab nyiaj them nyiaj ntawm lub tshuab vuam raug xa tawm ntawm lub hoobkas.Cov cuab yeej cia li taug qab qhov hloov pauv ntawm lub tshuab vuam, ua rau lub zog sib haum xeeb reactive zog nyob rau lub sijhawm, thiab txhim kho lub zog zoo.cov ntsiab lus raws li hauv qab no:
Tom qab cov cuab yeej lim dej tau muab tso rau hauv kev siv, lub zog hloov pauv nkhaus yog li 0.97 (qhov tsa ceg yog kwv yees li 0.8 thaum lub tshuab lim dej raug tshem tawm)
Kev ua haujlwm thauj khoom
Kev khiav hauj lwm tam sim no ntawm 1000KVA transformer poob los ntawm 1250A txog 1060A, txo tus nqi ntawm 15%, thiab kev khiav hauj lwm tam sim no ntawm 630KVA transformer poob los ntawm 770A mus rau 620A, txo tus nqi ntawm 19%.Tom qab them nyiaj, tus nqi poob qis yog WT = △Pd * (S1 / S2) 2 * τ * [1-(cosφ1 / cosφ2) 2] = 24 × {(0.85 × 2000) / 2000}2 × 0.4≈16 (kw h) Nyob rau hauv cov mis, Pd yog luv luv-circuit poob ntawm transformer, uas yog 24KW, thiab txhua xyoo kev txuag ntawm cov nqi hluav taws xob yog 16 * 20 * 30 * 10 * 0.7 = 67,000 yuan (raws li kev ua haujlwm 20 teev a hnub, 30 hnub ib hlis, 10 lub hlis ib xyoos, 0.7 yuan ib kWh).
fais fab xwm txheej xwm txheej
Lub zog ntawm kev lag luam tau nce los ntawm 0.8 mus rau 0.95 nyob rau lub hli tam sim no, thiab lub zog txhua hli yuav nyob twj ywm ntawm 0.96-0.98 yav tom ntej, thiab cov nyiaj tau los txhua hli yuav yog 3000-5000 yuan.
nyob rau hauv xaus
Lub lim reactive fais fab nyiaj them nyiaj ntawm lub tshuab hluav taws xob vuam tshuab muaj peev xwm txo qis kev sib haum xeeb thiab them rov qab lub zog reactive, daws qhov teeb meem ntawm reactive zog nplua nyob rau hauv kev lag luam, txhim khu lub peev xwm ntawm transformers, txo cov txiaj ntsig ntxiv, nce ntau lawm, thiab coj kev lag luam tseem ceeb. txiaj ntsig rau cov lag luam.Rov qab los ntawm kev nqis peev hauv tsawg dua ib xyoos.Yog li ntawd, cov khoom siv hluav taws xob reactive uas tsim los ntawm lub tuam txhab tau txaus siab heev, thiab yuav nyiam ntau tus neeg siv khoom yav tom ntej.
Post lub sij hawm: Apr-14-2023