Raws li cov khoom tseem ceeb hauv kev tswj lub cev muaj zog, kev tiv thaiv kev tiv thaiv ntau dhau ntawm cov pib muag muag ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev nyab xeeb ntawm kev ua haujlwm. Thaum kev tiv thaiv overload tshwm sim vim kev hloov pauv tam sim ntawd, kev teeb tsa tsis raug, lossis cov khoom siv tsis ua haujlwm, cov txheej txheem kho dua tshiab yuav tsum ua raws li cov txheej txheem tshawb fawb thiab siv cov kev daws teeb meem raws li lub hauv paus. Cov hauv qab no systematic rov qab mus kom ze yog grounded nyob rau hauv technical cov ntsiab lus thiab kev siv tswv yim:
I. Cov Thawj Coj Ua Raws Li Kev Tiv Thaiv Kev Tiv Thaiv Tshaj Tawm
1. Kev soj ntsuam xyuas hluav taws xob
Tam sim ntawd disconnect lub soft starter lub hwj chim mov. Siv ib lub ntsuas ntsuas ntsuas qhov ntsuas hluav taws xob tiv thaiv hluav taws xob tseem ceeb (tus nqi pom zoo> 5MΩ) txhawm rau tshem tawm luv luv - qhov kev pheej hmoo ntawm hluav taws xob. Tshawb xyuas cov khoom siv hluav taws xob (xws li, thyristors) rau qhov kub hnyiab ntawm lawv qhov chaw. Yog kuaj pom module bulging lossis tawg, hloov tam sim ntawd.
2. Load Condition Diagnosis
Manually tig lub cev muaj zog coupling kom paub meej tias tsis muaj kev sib kis kab mob sib kis. Rau cov twj tso kua mis, tshuaj xyuas cov kav dej valve raws li txoj cai; rau kiv cua loads, xyuas rau impeller deformation. Ib txoj kev tshawb fawb txog cov cement cog qhia txog kwv yees li 38% ntawm overloads tsis ua hauj lwm los ntawm kev ua kom muaj zog ntawm cov khoom siv vim qhov tsis txaus gearbox lubrication.
II. Parameter Reset thiab Fault Code Analysis
Cov pib muag niaj hnub no (xws li Schneider ATS48, ABB PST series) feem ntau muaj cov duab digital uas khaws cov ntaub ntawv keeb kwm tsis raug:
● Code E.OL:Tsis tu ncua overload. Xyuas kom tseeb tias lub cev muaj zog ntsuas tam sim no tsis yog qis dua tus nqi tiag tiag (yuam kev<5%).
● Code E.SC:Thyristor tawg. Tshawb xyuas cov mem tes waveform siv lub oscilloscope.
● Code E.ETH:Kub dab dej overheating. Txheeb xyuas cov cua txias ceev (tus qauv tus nqi Ntau dua lossis sib npaug rau 2000 rpm).
Ua ntej executing "fault reset" ntawm lub vaj huam sib luag tswj, xyuas kom meej tias qhov kub tsis kam nqi tau rov qab mus rau qhov kub thiab txias (pom zoo tos lub sij hawm: 15+ feeb).
III. Ntsiab Parameter Optimization Kho
1. Rov qab pib qhov pib- nce Curve
Rau siab -inertia loads (piv txwv li, crushers), dual -ramp pib- nce hom yog pom zoo:
● Teem thawj lub zog rau 30% -40% ntawm cov ntsuas torque.
● Txuas lub sij hawm acceleration mus rau 30-60 vib nas this.
● Lub dhia pib muaj nuj nqi yog tsim rau loaded pib-nce scenarios.
2. Kev ntsuas kev tiv thaiv tam sim no
Raws li IEC 60947-4 tus qauv, overload tam sim no teeb tsa yuav tsum txaus siab:
Iset=1.1~1.3 × Hauv (rated tam sim no),
nrog inverse lub sij hawm tus yam ntxwv curves txuam lub cev muaj zog thermal yam ntxwv.
3. Voltage Compensation Chaw
Tsis siv neeg voltage them nyiaj yuav tsum qhib thaum lub sij hawm ± 10% daim phiaj voltage hloov pauv. Cov ntaub ntawv teb los ntawm ib txoj haujlwm substation qhia tau hais tias lub cev muaj zog pib tam sim no peaks txo los ntawm 22% tom qab ua kom them nyiaj.
IV. Hardware Inspection thiab Maintenance Key Points
1. Kev ntsuas hluav taws xob
Siv lub semiconductor tester los tshuaj xyuas thyristors:
● Forward voltage poob VTM <1.6V.
● Tig tam sim no IGT nyob rau hauv 5-50mA ntau yam.
● Tuav tam sim no IH> 100mA.
2. Thaum tshav kub kub Dissipation System Maintenance
Ntxuav cov cua kub dab dej hauv huab cua (plua plav cov thickness <1mm). Hloov cov roj thermal (nyiaj compound-raws li pom zoo). Calibrate kub sensor yuam kev rau hauv ± 2 degree.
3. Contactor Kev soj ntsuam
Hloov bypass contactor lub ntsiab tiv tauj thaum hnav tshaj 1/3 ntawm thawj thickness. Ua lub sij hawm sib txawv yuav tsum tsis txhob tshaj nominal tus nqi los ntawm 20ms.
V. Kev Tiv Thaiv Kev Tiv Thaiv Kev Tiv Thaiv
1. Teem sijhawm soj ntsuam
● Lub hli:Cov ntaub ntawv pib tam sim no waveform (tsom rau di / dt hloov).
● Peb Hlis:Ua kev ntsuas kev tiv thaiv kev tiv thaiv.
● Txhua xyoo:Ua tiav -load simulation xeem.
2. Kev soj ntsuam kev txawj ntse
Nruab kev vibration sensors (ntau zaus 10-1000Hz) thiab infrared thermal imagers kom ua tiav ntawm IoT platform:
● Tiag tiag -lub sij hawm saib xyuas ntawm thyristor hlws ris kub (kev ceeb toom ntxov pib 110℃).
● Vibration acceleration trend analysis (alarm value 4m/s²).
3. Kev Tswj Xyuas Qhov Chaw
Cov khoom lag luam pom zoo:
● Thyristor modules ntawm tib tus qauv (tsawg kawg 2 units).
● Spare trigger board khoom siv.
● Ceev- ua yeeb yam fuses ( ntsuas tam sim no teeb tsa ntawm 1.6 npaug ntawm cov khoom siv tus nqi siab tshaj).
VI. Tshwj xeeb Scenario Solutions
1. Ntau-Motor Parallel Pib
Thaum siv tus tswv- qhev tswj hom, teeb tsa:
● Tam sim no tshuav nyiaj li cas sib txawv <8%.
● Pib lub sij hawm sib txawv <0.5 vib nas this.
Ib txoj kev tshawb nrhiav mining conveyor system qhia tau hais tias kev txhim kho lub tshuab hluav taws xob tam sim no txo qis kev sib npaug ntawm lub cev muaj zog tam sim no los ntawm 15% mus rau 3%.
2. Hybrid VFD/Soft-Pib System
Teem lub sijhawm tuag-lub sijhawm ncua sijhawm (pom zoo 100-200 ms) thaum hloov pauv los tiv thaiv rov qab-EMF surges. Siv lub disconnect-ces-reconnect logic tswj kom ntseeg tau tias kev hloov pauv tshwm sim ntawm qhov hluav taws xob xoom hla.
Tom qab ua tiav cov kauj ruam rov qab los saum toj no, ua peb yam tsis muaj -Load test runs (10-feeb intervals) ua ntej maj mam thauj mus rau cov xwm txheej ntsuas. Rau kev rov ua dua qhov yuam kev, xav txog kev kho dua tshiab lub peev xwm pib lub zog (xaiv tus qauv nrog 1.25 yam kev nyab xeeb) lossis hloov mus rau qhov sib txawv ntawm kev tsav tsheb. Tsim kom muaj cov ntaub ntawv kev noj qab haus huv ntawm cov cuab yeej (nrog rau cov ntaub ntawv yoj tam sim no thiab cov ntaub ntawv kub thaum txhua qhov kev tshwm sim overload) ua rau txhim kho qhov tseeb ntawm qhov tseeb. Kev xyaum qhia tau hais tias cov txheej txheem rov qab tau zoo tuaj yeem txuas ntxiv qhov pib muag muag ntawm MTBF (Lub Sijhawm Nruab Nrab Nruab Nrab Tsis Ua Haujlwm) mus txog 6000 teev.