Q: Lub SR Circuit Court ua haujlwm li cas rau HV kuaj, thiab vim li cas nws thiaj li ua kom muaj zog?
A: Ntawm resonance: ωL=1/(ωC). Qhov tsuas tshuav impedance yog Circuit Court kuj R. V_out=V_in × Q. Qhov no voltage amplification yog lub hauv paus ntawm SR HV xeem.
Circuit: VFD → Exciter TX → Reactor L → Load C (specimen)
lej:
• Thaum resonance: X_L=X_C → tag nrho reactance=0. Q=X_L / R=(1/R)√(L/C)
• V_out=V_in × Q. P_in=P_out / Q.
Tiag -world piv txwv - 10 km 110 kV XLPE cable:
• C=2 μF, phiaj V=128 kV. Reactor L=50 H. f_res=15.9 Hz.
• Q=50 → exciter tsuas yog 128/50=2.56 kV.
• Cov zis sib npaug: 2,048 kVA. Cov tswv yim tiag tiag: ~ 6.5 kW (los ntawm lub tshuab hluav taws xob me me).
Peb tej yam kev mob rau resonance:
① Tuning: ω²=1/(L·C). ② Kev ruaj ntseg: ± 0.5 Hz. ③ Purity: THD <5% (lub tank lim harmonics).
Qhov txiaj ntsig tseem ceeb: Tshem tawm cov nyhuv Ferranti (series inductor compensates load capacitance).