Yang Zhi

TL;DR: In this paper, a single-terminal radiation-type power-distribution-network single phase grounding fault is used to represent a distortion degree of a zero mode traveling wave high frequency component.

TL;DR: Based on the attenuation law of the amplitude of the high frequency component when the line mode voltage traveling wave propagates on the half-wavelength transmission line, a non-synchronous fault location scheme was proposed in this article combining the single-ended traveling wave distance measurement with the traveling wave attenuation characteristics.

TL;DR: In this article, a fault transient state traveling wave decaying component is used for power grid fault section positioning based on a wavelet coefficient module maximum value acquired by conducting wavelet transform on signals obtained after a fault occurs to serve as a characteristic quantity representing initial traveling wave amplitude; the measuring point with the largest characteristic quantity corresponds to one end of a faulty line, the other end of the faulty line is determined by means of the decaying characteristics, obtained when fault traveling waves are propagated through a shortest route.

TL;DR: In this paper, a power transmission line fault locating method was proposed, which overcomes the problem existing in a traditional traveling wave method, performs fault locating by utilizing the linear lagging principle of the phase during the modulus voltage traveling wave propagating process, and is simple to implement.