This book addresses the field of modern power systems with a focus on voltage security and coordinated control in power-electronics-dominated grids. It systematically investigates the full-chain characteristics of voltage dynamics, covering emerging power electronic devices, renewable plant clusters, system-level interactions, novel load behaviors, and energy storage integration. By introducing advanced methods such as heterogeneous device modeling, plant-level equivalent modeling, and system-wide coordinated control strategies, the book reveals the underlying mechanisms of voltage stability under high renewable penetration and weak grid conditions. Particular emphasis is placed on the transition from physics-driven to control-driven voltage support, as well as on multi-timescale stability analysis and ?autonomous-coordinated? control frameworks. It offers both methodological innovations and practical insights for enhancing voltage stability in next-generation power systems. The book is intended for graduate students, researchers, and engineers in power engineering, power electronics, and energy systems, as well as professionals involved in renewable integration and grid operation.
