Q1: Akin et mas importante so Induced Voltage Withstand Test (IVW) parad angkakabaleg iran transformer nen say estandarten Separate Source Withstand Test (Hipot)?
A: Say Separate Source test (Hipot) et manunan manguusisa edmanunan insulasyon(saray winding ya anggad dalin tan diad baetan na saray winding), ya say interon winding et walad parehon potensyal. Diad pidumaan, say Induced Voltage test (IVW) et mamapakiwas ed transformer manlapud abeban-boltahe pian mamawala na atagey a boltahe ed atagey-boltahe. Saya so talagan mangipapabitar edlongitudinal insulation(inter-turn, inter-layer, tan tap-changer insulation). Lapud say karaklan ed saray pakaderal na insulasyon ed angkakabaleg iran transformer et nagagawa ed baetan na saray turno, say IVW ya walay PD monitoring so sanka-autoritatibon paraan pian na-verify so internal dielectric integrity.
Q2: Akin et kaukolan ya i-set so frequency ed 150Hz-200Hz (Frequency Doubling) parad Induced Withstand tests imbes ya say estandarten 50Hz/60Hz?
A: Saya so obligado pian naprebentaanmagnetic core saturation. Unong ed magnetic flux formula Φ=U/(4.44⋅f⋅N), no say frequency ff et mansiansian agmanguman ed 50Hz legan ya say test voltage UU et ontagey ed 1.5x na rated value, say flux ΦΦ et ontagey met na 1.5x. Saya so mangitonton ed graben saturation na core, ya manresulta ed angkakabaleg iran excitation currents ya nayarin tampol ya napoolan iray windings. Diad pamarakep ed frequency ff ed 150Hz o mas atagey ni, nadampot tayo so nakaukolan ya atagey ya test voltage legan ya pansiansiaen so core flux ed loob odino anggan diad leksab na rated range, pian naseguro so ligtas ya test environment.
Q3: Panon tayon naseguro so background PD noise level ya abeba nen 10pC parad 500kV class test system diad field environment?
A: Makadampot na<10pC background noise level requires a "Three-Tier" protection strategy:
Pansalat na Lapuan: Say Variable Frequency Power Source et nepeg ya walaan na atagey a -performancemulti-stage LC low-pass filterspian naekal iray high-frequency harmonics ya napapawala na IGBT switching.
Spatial Shielding: Man-installprecision-pinakintab ya double-tier corona ringswalay diametro ya Mas baleg nen say 1000mm Mas baleg nen say 1000mm ed atagey-voltage terminals (divider tan bushings) pian naekal so air corona ed atagey-field strengths.
Lohika na Pangigapo: Ipapaakseb so"Single-Point Star Grounding"sistema ya manguusar na heavy-duty copper busbars pian naekal iray interference currents ya sengegan na ground loops.
Q4: Akin et say 1040kVA/260kV ya sistema et ipapasen ya "ideal high-spec" ya solusyon parad panubok na 66kV/40MVA transformer?
A: Saya so mangirerepresenta na "over-specification for reliability" ya estratehiya. Lapud say rated voltage na sistema (260kV) et mas atagey nen say sankatageyan ya test voltage ya nakaukolan parad 66kV transformer (approx. 140kV), say test equipment et mankikimey ed abeban tuloy ya internal electrical stress level. Kanian, saysay self-nagawaan ya partial discharge et anggapoy kana. Saya so mangiiter na ultra-pure ya kaliberliber na panagsukimat parad pakaala na saray angkekelag a signal na depekto ed loob na transformer (singa saray micro-bubbles ed larak odino angkekelag iran burrs), ya mamaaligwas a maong ed diagnostic sensitivity tan accuracy.
Q5: Antoy praktikal ya kabaliksan na 2D/3D PRPD patterns parad saray inhinyero no man-diagnose na saray depekto?
A: PRPD (Phase-Resolved Partial Discharge)saray padron et manserbin "fingerprints" na saray depekto ed insulasyon. Diad pangobserba ed inkaapag-apag na pulso unong ed sine wave phase (simetriya, slope, tan frequency), saray inhinyero et automatikon makapangklasipika ed klase na depekto:
Point Discharge (Corona): Kaslakan et ompatnag ya asingger ed saray toktok na boltahe ya walay malinew ya kurti ton "palandey".
Manleletaw ya Electrode Discharge: Nabidbir ed alablabas ya stable ya amplitude tan fixed phase positions.
Internal Void Discharge: Ipapanengneng toy malaknab, singa-elliptical ya inkaapag-apag. Saya so mamaabuloy ed onsite diagnostics ya onaligwas manlapud basta pakaamta no "no" walay discharge ya anggad pakabidbiran no "anto" so discharge, ya mangiter na eksakton giya parad ontumbok ya panmintina o pangapiger ed transformer.