Risk Assessment of Post-Fault Temporary Overvoltage Using Generalized Short-Circuit Ratio

Temporary overvoltage (TOV) is becoming one challenge for the integration of significant power electronics resources into a system. To assess risk TOV in Multi-Infeed Power Electronic System (MIPES), worst-case estimation approach proposed to risk. The paper starts with analyzing mechanism TOV, which reveals that dominated by excessive reactive resulting from comprehensive control laggings. Then, principle approximating Voltage Source Converter (VSC) connecting an infinite bus introduced within context RMS model. After that, method based on concept generalized short-circuit ratio (gSCR-TOV) quantify multi-bus This intends permit screening identify those nodes at greatest need further EMT assessment. localize these nodes, weighted sensitivity matrix pinpoint subject highest MIPES. Finally, case studies time-domain simulations are carried out and verifies effectiveness methods.