Short-Circuit Currents in Three-Phase Systems

Introduction.- Standards for Short-circuit Current Calculation.- Requirements and Calculation Methods.- Calculation Variables for Equipment.- Calculation of the Short-circuit Currents.- Double Line-to-earth Short Circuit.- Calculation of the Voltage Factor c.- Correction Factors for Power Station Units and Power Transformers.- Component Systems.- Breaking Current in Meshed Networks.- Calculation of the Thermal Equivalent Short-circuit Current.- Contribution of Asynchronous Motors to the Short-circuit Current.- Short-circuit Current Calculation with Converter Systems.- Influence of Capacitors or Capacitive Compensation Units on the Short-circuit Current.- Calculation and Operation with Parallel Transformers.- Representation of Autotransformers in Short-circuit Current Calculations.- Voltage Flashover Between Three-phase Systems with Different Nominal Voltages.