A novel travelling wave fault location algorithm for HVDC transmission lines considering variation characteristics of wave speed

作者：Zhang, Yining; Xu, Min; Liu, Yonghao; Cai, Zexiang

来源：Dianwang Jishu/Power System Technology, 2011, 35(7): 227-232.

• Fault location algorithms
• HVDC transmission lines
• Traveling wave
• Traveling wave fault locations
• Travelling wave fault locations
• Travelling waves
• Univariate functions
• Variation characteristics

A novel traveling wave fault location algorithm for HVDC transmission lines, in which the variation characteristics of wave speed is considered, is proposed to effectively remedy the defect of high error under a certain fault distance in fault location due to adopting fixed wave speed. Firstly, the characteristics of varying wave speed of fault traveling wave are analyzed in depth and the conclusion is that for the fault location device with appropriate resolution the wave speed is a univariate function of fault distance. Based on this conclusion, the impacting mechanism of varying wave speed on traveling wave fault location for HVDC transmission lines is analyzed in detail, then a novel fault location algorithm, in which the variation characteristics of wave speed is taken into account, is proposed. Simulation of the proposed fault location algorithm is performed in EMTDC environment and the obtained results show that the proposed algorithm is effective.

• 出版日期2011-7
• 单位华南理工大学