直流牵引供电系统行波保护研究

Research on Protection Model for DC Traction Power Supply System

对于供电系统继电保护而言,如何提取并利用供电系统的故障信息是确保保护装置可靠性的关键因素。通过深入分析行波仅与传输线单位阻抗有关的传播特性,提取直流牵引供电系统的瞬变信息,建立了直流牵引供电系统的行波保护模型,克服了电流保护和di/dt-ΔI保护受线路总阻抗影响的弊端,从而提高了保护装置的可靠性和速动性。经现场试验,得到令人满意的结果。

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