1. Ua haujlwm ua haujlwm: Sub sem resonance
Nyob rau hauv aSeries resonant Circuit Court, tusinductive reactance (XL)ntawm lub siab-voltage reactor thiab covPeev xwm (XC)ntawm cov cable nyob rau hauv kev ntsuam xyuas ncua ib leeg:
Kev daws teeb meem rau zaus:
Nyob rau ntawm resonance:
TusKev ntsuas kev ntsuam xyuas yog qhov siab tshaj plawshla ntawm cov cable nrog tsawg heev lub zog lub zog .
Lub kaw lus ua zoo li lub voltage magnifier .
Rease FAIS FEEM YOG COMPRULULATED, tsuas yogMe Nqis Zogyog kos los ntawm cov mov .
2. Cov Txheej Txheem Tseem Ceeb (Piav qhia)
| Ib feem | Rooj mov | Cov ntawv tseem ceeb |
|---|---|---|
| Ntau dua cov hluav taws xob muab hluav taws xob (VFPS) | Cov Khoom Siv Hluav Taws Ntawm Tuned Ze (20-300 Hz) | Feem ntau tau ruaj khov-xeev inverter; Kho kom meej tswj ntawm cov zis ntau |
| Kev zam kev hloov pauv | Cov kauj ruam nce voltage qis los ntawm vfps | Rwb thaiv tsev yuav tsum wallstand hv sab tsim tawm |
| HV reactor (inductor) | Cov ntaub ntawv lc resonance nrog kuaj khoom | Yuav tsum tau sib txawv lossis modular los lis cov capactances sib txawv |
| Kuaj cov khoom (cable) | Muab cov tshuaj ntsuam capacitance muab | Ntev Cables =} siab muaj peev xwm, feem ntau 0.1-5 μf |
| HV divider | Kev ntsuas cov khoom siv voltage kom raug | Muaj peev xwm lossis diverive divider; calibrated |
| Kev tswj & kev tiv thaiv kab ke | Cov neeg saib xyuas kev ua haujlwm, cov ntaub ntawv sau cia, mus ncig ua txhaum | Suav nrog kev txhawb nqa, overcurrent, pdhoch tswb |
3. Lub Txheej Txheem Kev Txhim Kho
A. Modular packized system
Mounted hauv tsheb lossis thawv
Siv rau kev sim ua hauj lwm ntawm ntev-Deb lub zog hluav taws xob (e . kv, 400kv)
Tuaj yeem sim 1-10 km cables
B. Txawb nplua nplua
Compact rau cov ntawv thov-hluav taws xob hauv nruab nrab
Yooj yim thauj los ntawm trailer lossis tos
Txo cov zis: 50-150 KV
4. Raug kev xeem cov txheej txheem
| Mus ib ruam taw | Kev piav txog |
|---|---|
| 1.} npaj | Ntsuas cable ntev, capacitance, kuaj txiav, daim hlau thaiv av |
| 2. Resonance Tuning | Kho cov zaus kom txog thaum cov hluav taws xob siab tshaj plaws tshwm hla ntawm cable |
| {{0 {}} voltage ramp-up | Nce voltage ntsuas qib (feem ntau yog 1.7-2.0 × kev siv cable) |
| 4.} tsau lub sijhawm | Tswj kom muaj voltage tas li 15-60 feeb |
| 5. saib | Saib xyuas voltage, tam sim no, pd (yeem), kub |
| 6.} paug | Kom zoo tso cov cable ua ntej xaus kev sim |
5. Qhov System Sizing Cov Lus Qhia
Txhawm rau xaiv cov txheej txheem raug, laij covThauroad muaj peev xwmthiabXeem Yuav Tsum Tau:
A . Cable canensatorance kwv yees:
B .} Yuav tsum tau kuaj lub zog:
V: Kev ntsuas voltage (rms)
f: zaus (hz)
C: Tag nrho Capacitance (μF)
Q: Resive Fais (KVA)
C . Piv txwv:
Cable: 5 KM, XLPE, 220KV chav kawm
Capacitance: 0.25 μf / km 5=1.25 μf
Kev Ntsuas Ntsuas: 1.7 × √ ≈ 307 Kv (Peak)
Zaus: 50 Hz
Q =2 × × 50-6≈36Mvarq {^ 2 {^ {{17}-6}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Mvarq {{19} π π π π π × 50-3 × 10,25 × 10-6≈36vlar
Cov txheej txheem resonant yuav tsum txhawb qhov noRefiorive zogntawm qhov xav tau voltage .
6. Advanced xaiv
Kev txheeb xyuas ib nrab tso (PD)
Tshawb nrhiav cov duab liab thaum ntxov
Tan Δ (dissipation qhov ntsuas) ntsuas
Rwb thaiv tsev laus kev tsom xam
Chaw Taws Teeb Tswj & Scada Sib Koom Tes
Rau kev kuaj xyuas ib qho, khaws cia, thiab cov huab qhia
HV lim (harmonic supress)
Tiv thaiv emi kev ntxhov siab thaum lub sijhawm rov qab
7. Cov Qauv thiab Kev Ceg Lus hla dhau
| Lub hom phiaj | Voltage theem | Kev sim ncua sijhawm | Hla kev |
|---|---|---|---|
| IEC 60840 | 30-150Kv | 1h ntawm 2 × u₀ | Tsis muaj kev tawg |
| Iec 62067 | 150-500kV | 1h ntawm 2 × u₀ | Tsis muaj kev tawg |
| Ieee 400.4 | Tag nrho | Feem ntau 30-60 Min | Kev xaiv PD <5 pc |
8. Cov Ntawv Thov
Lub Hoobkas lees txais kev kuaj (rog) & Site lees txais (Sat)
Commissioning ntawm ntev hauv av fais fab kis kab
HVDC Cable Testing (ntawm AC)
Submarine cable yog tseeb
Hla-Sibler Cable Circuit Seem
9. Kev sib piv: AC resonant vs lwm txoj kev
| Yam zoo | Ac resonant | Ac ntsuas hloov pauv | VLF TEST | DC TEST |
|---|---|---|---|---|
| Haum rau cov cab tsawg | ✅ | ❌ (Ntau dhau) | ✅ | ❌ (Ua kom puas rau XLPE) |
| Lub Zog Yuav Tsum Tau Ua | Tsawg (resonant) | Siab | Tsawg heev | Qi |
| PD ntsuas | ✅ | ✅ | Txwv | ❌ |
| Qhov hnyav / Portability | Nruab nrab | Siab | Qho kaj | Qho kaj |
| Siv rau XLPE Cable | ✅ | ✅ | ✅ | ❌ |