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As the most critical electrical equipment at traction substations, Co-phase power supply devices (CPD) are not only structurally complex but also significantly costly. Repairing damaged CPDs is challenging and time-consuming, leading to substantial economic losses (Fang in Protection design for single-phase/three-phase combined co-phase power supply. Southwest Jiaotong University, 2001; Gao in Research on the principle of novel protections for traction power supply system of high-speed railway. Southwest Jiaotong University, 2001). Therefore, the protection configuration of CPDs is essential for ensuring the safe and reliable operation of traction power supply systems. The types of faults that may occur in CPDs are illustrated in Fig. 7.1.

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Protection Technology of Co-phase Power Supply Device

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  • 发表日期：

    2026年

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  • Minwu Chen

摘要

As the most critical electrical equipment at traction substations, Co-phase power supply devices (CPD) are not only structurally complex but also significantly costly. Repairing damaged CPDs is challenging and time-consuming, leading to substantial economic losses (Fang in Protection design for single-phase/three-phase combined co-phase power supply. Southwest Jiaotong University, 2001; Gao in Research on the principle of novel protections for traction power supply system of high-speed railway. Southwest Jiaotong University, 2001). Therefore, the protection configuration of CPDs is essential for ensuring the safe and reliable operation of traction power supply systems. The types of faults that may occur in CPDs are illustrated in Fig. 7.1.