A Review of PMU-driven Adaptive Protection Scheme for Modern Power Systems
Keywords:
Adaptive protection, Distributed generation (DG), Dynamic stability, Fault detection, Islanding detection, Loss of mains (LOM), Microgrid, Phasor measurement unit (PMU), Power system protection, Real-time monitoring, SCADA, Smart grid, Synchrophasor technology, Wide area monitoring system (WAMS), Wide-area protectionAbstract
The continuous increase in the integration of distributed generation (DG) and environmentally friendly renewable energy sources has significantly increased the complexity and dynamic behavior of modern power systems, which in turn makes conventional protection schemes less effective and less reliable under varying operating conditions. This study presents a PMU-driven adaptive protection scheme based on advanced synchrophasor technology to overcome these challenges. Phasor measurement units (PMUs) provide highly accurate, time-synchronized measurements of electrical parameters such as current, voltage, phase angle, and frequency, enabling real-time monitoring and wide-area situational awareness across the power network. The proposed method dynamically adjusts protection settings in response to changing system conditions to enhance fault detection accuracy, improve reliability, and maintain overall system stability. It also effectively addresses critical challenges such as islanding detection under dynamic and uncertain operating environments. The results demonstrate that PMU-based adaptive protection offers faster response time and higher accuracy compared to various conventional protection methods. Furthermore, this study presents a comparative study of different power system protection approaches in the presence of distributed generation. It analyzes real-time monitoring techniques and fault detection strategies to evaluate their effectiveness in improving system reliability. The study also investigates various methods for maintaining dynamic stability and highlights the most efficient approaches suitable for modern power systems.
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