상황
A medium-voltage bus supplies an electric arc furnace with fluctuating reactive power and harmonic distortion. An SVC combines fast thyristor-switched capacitors, a continuous thyristor-controlled reactor, and tuned filters to stabilize voltage and absorb harmonics.
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01
Use anti-parallel SCR pairs for each TSC branch to enable fast capacitive switching.
02
Include a TCR branch for continuous reactive power adjustment and a main breaker for protection.
03
Place tuned LC filters at the bus to mitigate 3rd, 5th, and 7th harmonic currents from the arc furnace.
Use this topology for medium-voltage industrial plants with large nonlinear loads, especially electric arc furnaces, where fast VAR control and harmonic filtering are required.