A Novel Two-Step Approach for Reactive Power Demand Calculation Using Integrated Voltage Stability Analysis

Hassan Abouelgheit and Hendrik Lens have introduced a novel two-step methodology for calculating reactive power demand in power systems, detailed in their paper on arXiv. The approach addresses a key gap in existing literature, which focuses on optimizing reactive power compensation placement and sizing through single-simulation approaches. Instead, this methodology directly calculates actual reactive power demand using a comprehensive back-to-back simulation framework that integrates both long-term and short-term voltage stability assessments sequentially.

The method employs iterative Quasi-Dynamic Simulation, Q-V analysis, and dynamic simulation, combined with a full annual time-series analysis covering 8760 hours. It uses multi-criteria violation assessment, evaluating the number, severity, and duration of voltage violations. A case study demonstrated the methodology's effectiveness, successfully addressing all buses with voltage issues and calculating the total reactive power demand across the network.