Novel Method for Identifying Fault Location of Mixed Lines

作者：Wang, Lei^*; Liu, Hui; Le Van Dai; Liu, Yuwei

来源：Energies, 2018, 11(6): 1529.

DOI：10.3390/en11061529

• traveling wave method
• fault location
• variational mode decomposition (VMD)
• Teager energy operator (TEO)
• VSC-HVDC system
• PSCAD
• EMTDC
• MATLAB

The identification and localization of a fault are a basic requirement for optimal operation of a modern power system. An effective fault identification method significantly reduces outage time, improves the electrical supply reliability, and enhances the speed of protection control. This paper proposes a novel method based on the theory of the two-terminal traveling wave range to identify the fault location in a voltage source converter based high voltage direct current (VSC-HVDC) system containing mixed cable and overhead line segments. It uses variational mode decomposition (VMD) and the Teager energy operator (TEO) as a new method to detect the traveling wave fault through a fault signal. The effectiveness of the proposed method is verified via time domain simulation of the hybrid VSC-HVDC transmission system using PSCAD/EMTDC and MATLAB software. Simulation results show that the proposed method demonstrates high fault location accuracy and excellent robustness with a slight effect on transient resistance and fault types, and that it performs better than the existing transient detection techniques, such as wavelet transform and ensemble empirical mode decomposition.

• 出版日期2018-6
• 单位湖北工业大学