The scenario
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.
What is in this drawing
Read the decisions behind it.
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.
More like this
Other examples in this family.
Loading drawing…
690V Hybrid Active Power Filter and Capacitor BankPower QualityOpen →Loading drawing…
480V Detuned Capacitor Bank for Power Factor Correction and Harmonic FilteringElectronicsOpen →Loading drawing…
33 kV Wind Farm Collector System Reactive Power Compensation and Harmonic Filteringelectrical engineeringOpen →