Power transmission line single-end fault distance measurement method based on multivariate model fusion analysis

The invention discloses a power transmission line single-end fault distance measurement method based on multivariate model fusion analysis, which comprises the following steps: constructing a time domain equation set according to a lumped parameter line model to preliminarily fit and calculate a fault distance, after judging that a calculation result reaches a steady state, analyzing according to a theoretical error and considering a certain margin, and determining a new calculation starting point xq (1); and calculating the voltage and current to a new starting point xq (1) by using the Bergeron model, and based on the new voltage and current at the starting point, performing fitting calculation by using the lumped parameter model again to obtain a fault distance xq (2), thereby obtaining a final fault distance xq = xq (1) + xq (2). Compared with the prior art, the method can reduce the ranging error of the lumped parameter line model caused by neglecting the line distributed capacitance. 本发明公开了一种基于多元模型融合分析的