Abstract:

Based on the transmission line theory, characteristic of the buried metallic structures and the concerned harmful effects to the buried oil and natural gas pipeline caused by short-circuit fault is further discussed. A closed –form expression of conductive voltage caused by short-circuit fault of high voltage transmission line is given. The transmission line model is set up and a set of formulas for calculating the parameters of the buried pipeline in actual environment condition data are given. With the conductive energization model, conductive current and voltage waveform equation is presented.. At last, the characteristic of he harmful effects of the buried pipeline from the power line short circuit fault are discussed.

Key words:

transmission system parameter, oil pipeline, short-circuit fault