Surge ntes, raws li tseemceeb overvoltage tiv thaiv cov khoom siv hluav taws xob, tso cia siab rau kev ua tau zoo ntawm lawv lub valve discts los xyuas kom ntseeg tau. Zinc Oxide (ZNO) Kev ua kom muaj kev cuam tshuam hauv kev ua haujlwm lossis kev ua haujlwm noo noo ua raws kev laus lossis kev tswj hwm hluav taws xob, lossis txawm tawg. Seem no cov txheej txheem ntsuas kev pheej hmoo ntawm peb qhov ntev: kev ua tsis tiav cov tshuab, kuaj kom paub cov txheej txheem, thiab kev ua haujlwm zoo.
1. Ua tsis tiav hom tshuaj xyuas
Zno Valve discs tau txais lawv cov chaw tsis muaj txiaj ntsig los ntawm cov nplej ciam av txheej uas muaj ntawm cov nplej thiab cov quav ntxiv xws li bi₂o₃. Thaum laus, tshuaj lom neeg decomposition ntawm cov khaubncaws sab nraud pov tseg hauv qab hluav taws xob kev ntxhov siab thiab ib puag ncig kev yaig nce mus taug kev tam sim no txoj kev. Kev sim cov ntaub ntawv qhia tau tias thaum lub zog tiv taus ntawm qhov tam sim no tshaj li {{{}}}}}}}}}}. 3 Yog hais tias lub joule kub tsim los ntawm lub zog-zaus ua raws li tam sim no kub dissholation muaj peev xwm (raug pib: 200 W \/ kg), thermal khiav tawm. Piv txwv li, cov khoom noj noo nyob hauv cov neeg rho tawm hauv 500 kv hloov mus rau qhov hloov mus rau 0.8 ma, ua rau muaj kev kub ntxhov rau 380 degree thiab tom qab kev sib tawg.
2. Cov ntsiab lus tseem ceeb nrhiav tau
To tam sim no soj ntsuam
Siv kev ntsuas kev ua kom zoo nkauj kom cais tawm cov cheebtsam los ntawm tag nrho tam sim no. Rau ib tug IEEE C62.11, pib kev soj ntsuam kev soj ntsuam thaum:
Tag Nrho Tam Sim No> 1 MA (rau ntau dua lossis sib npaug nrog 110 kV khoom siv)
Resistive tivthaiv> 0. 3 ma
Case Study: An offshore wind farm detected a resistive current increase from {{0}}.15 mA to 0.32 mA over 18 months via online monitoring. Disassembly qhia ib qho 3 hli-tuab hygroscopic txheej ntawm valve disc npoo.
Kev paub tob tob ntawm thermogrosis
Kev daws teeb meem siab nrog cua sov cov kev xav (tsawg dua los yog sib npaug rau 0. 05 degree}. 05 degree) Txheeb xyuas teeb meem kub sib txawv. Cov cua sov txawv txawv yog chij thaum:
Theem Qhov txawv> 1.5 degree
Tsis Taus Kub> 60 degree (ntawm 40 Degree ambient)
Kev Kawm Kev Kawm Ntawv: Ib qho kev hloov pauv ntawm thaj chaw muaj hluav taws xob hauv 72 Qib Kev Kub Siab Hauv Zej Zog, Tiv Thaiv Tsheb Luv Tsheb Los Ntawm Kev Hloov Pauv.
DC Siv Voltage Kuaj
Per DL/T 596, apply 1 mA DC current. A >10% poob rau hauv U1MA (piv txwv li, txij li 30 KV rau 27 kV) qhia tias cov nplej loj heev. Tshuaj cog tshuaj tau kuaj tau ib 12% U1MA poob qis, pom cov kab tawg radial ntawm lub valve discs.
Kev sib sau ua ke pov thawj
For nitrogen-filled arresters, measure annual pressure decay. Seal failure is confirmed if pressure drops >5% \/ xyoo (piv txwv li (xws li, los ntawm 0. 25 mpa kom 0. 237 MPa). Ib qho kev hloov chaw Tibetan ua rau 8% tourgage vim tsawg-fain foob brittleness, ua rau hws sab hauv.
3. Lub neej ua hauj lwm zoo
Kev tiv thaiv kev saib xyuas
Calibring Online soj xyuas cov tshuab nrog ± 2% tseeb ua ntej cov caij nyoog nag xob nag cua.
Cov tsev muaj tshuaj kom huv kom tswj tsis tau Nonsoluble Density (NSDD) tsawg dua lossis sib npaug nrog 0. 05 mg \/ cmp.
Kev hloov kho ib puag ncig
Hauv cheeb tsam ntug hiav txwv:
Nruab silicone roj hmab ua rau (croppage nrug ntau dua los yog sib npaug rau 31 hli \/ KV).
Thov thov peb lub hlis twg RTV-II cov tsho tshaj los txo cov ntsev corrosion los ntawm 70%.
Kev Kawm Kev Kawm Ntawv: Zhoushan Islands tuaj resedored hydrophobicity los ntawm HC4 rau HC6 siv txoj kev no.
Ntse kuaj mob
Tso raws li ntug kev sib tw sib dhos-raws li cov neeg soj ntsuam tam sim no nrog Lorawan kis.
Tsheb ciav hlau LSTM cov qauv ntawm cov ntaub ntawv keeb kwm rau tsawg dua lossis sib npaug rau 10% yuam kev hauv cov nyiaj uas tshuav ntau lifespals.
Cov thev naus laus zis tseem ceeb rau kev kuaj kom pom thiab txo cov kev sib kis hauv cov khoom siv gis
Roj-insulated Switchgear (GIS), nrog nws cov hluav taws xob tsim thiab cov hluav taws xob kev pheej hmoo, ntsej muag sib tw ntawm micron cov nplai ua rau kev tawm paug (PD) lossis flashover. Cov ntawv tshaj tawm uas 30% ntawm lub ntiaj teb GIS ua tsis tiav qia los ntawm kev teeb tsa cov khib nyiab lossis kev ua haujlwm. Hauv qab no yog kev tsom xam ntawm cov kev phom sij, nrhiav txoj kev, thiab tswj cov tswv yim.
1. PaClele Dynamics thiab kev phom sij
Hlau hais (piv txwv li, txhuas lossis nyiaj-plated tooj liab) tsiv nyob rau hauv AC hluav taws xob hauv coulomb rog. Cov lus tshaj li ntau dua lossis sib npaug rau 0. 3 mm nyob rau hauv 126 KV Gis tuaj yeem cuam tshuam nrog lub zog ntawm 10 kV \/ hli). Kev Kawm Kev Kawm: Ib qho 1.2 mm aluminium tawg nyob rau hauv lub chaw hloov pauv kev hloov ua kom theem-B Busebar Flashover tom qab 3 lub hlis, ua rau ¥ 2 lab ncaj qha poob.
2. Multimodal Nrhiav Tau Technologies
Ultra-siab zaus (UHF) Pd nrhiav tau
Siv 300-100 MHz sensors los xyuas cov cim PD tsawg li 1 PC.