LI Yi, WU Zhengqiu, LI Jianqi. Study on Traveling Wave Signal Based on Dynamic Principle[J]. High voltageapparatus, 2016, 52(8): 57-63. DOI: 10.13296/j.1001-1609.hva.2016.08.010.
Study on Traveling Wave Signal Based on Dynamic Principle
Aiming at the distortion phenomenon during the travelling wave transmission in power system
one 110 k V power grid(a total of 15 substations node)is built to simulate the travelling wave propagation in this paper
the relationship between the traveling wave arrival time and propagation path
the site traveling wave signal timefrequency domain characteristics are analyzed. EMD-HHT algorithm is used to calculate the arrival time of traveling wave
Kolmogorov entropy and fractal dimension F for the first 0.5 ms wave of the traveling wave(a total of 1 000 samples)are calculated by using dynamics theory. The paper concludes that
values of K and F of traveling wave take on decreasing trend with the propagation distance increases
and the index distribution value for adjacent lines or ring network node is similar
so this conclusion can be applied to qualitatively distinguish the roughly position of the traveling wave source.