A Compact Three-Winding Transformer-Based Power Quality Management Topology for Multi-Line Urban Distribution Network

This paper proposes a power quality management topology for multi-line urban distribution networks based on a three-winding transformer, addressing the inadequacy of traditional distribution networks in meeting stringent power supply demands and various complex operating conditions. For 400 V and 10 kV lines, a control strategy is proposed to simultaneously manage three scenarios: voltage limit violations, three-phase load imbalances, and harmonic distortions. Finally, a system simulation model is built based on Matlab, and the multifunctional operating performance of the new topology is verified through simulation results.