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Protection in Series Capacitor Environment

Protection in Series Capacitor Environment. X1=0.8*(X L1 -Xc) Setting recommendation without Consideration of the subsynchronous frequencies. Protection of Series Compensated Lines Subsynchronous Frequencies.

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Protection in Series Capacitor Environment

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  1. Protection in Series Capacitor Environment X1=0.8*(XL1-Xc) Setting recommendation without Consideration of the subsynchronous frequencies

  2. Protection of Series Compensated LinesSubsynchronous Frequencies Fig. 2: Single-line diagram of a line-to-line short-circuit with series capacitor and no gap-flashover Phase-to-Phase Fault, no Gap-Flashover Differential Equations for Capacitor Voltage: Fig. 3: Single-line diagram of reduced system for the calculation of the subsynchronous current components

  3. 21.4 W 3.14 W 29.84 W 4.35 W 36.3 W 148.8 mF 21.4 W 3.14 W 29.84 W 4.35 W 36.3 W 148.8 mF 42.8 W 14.98 W 132.28 W 74.4 mF Protection of Series Compensated LinesSubsynchronous Frequencies Peak value of gap flashover voltage for every capacitor is here 200kV prim and 50V sec for 400kV system. Peak value of gap flashover voltagefor the capacitor in the reduced system 100V sec. All impedances are sec. values

  4. Protection of Series Compensated LinesExample of Impedance Measurement

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