ANALYSIS OF ELECTROMAGNETIC INFLUENCE ON STEEL PIPELINES FROM THE ELEMENTS OF ELECTRIC POWER SYSTEM
A b s t r a c t: Power transmission lines often share same corridors with steel pipelines for oil and gas. When phase to ground fault occurs, high voltages may appear on the pipelines due to different mechanisms of mutual coupling. These voltages propagate at long distances from the fault location, and may pose a serious threat for the safety of the personnel and integrity of the pipeline. To provide adequate protection, calculation of the mutual coupling is required during the design stage of systems. Induced voltages are strongly influenced by the disposition of the both systems, their configuration and characteristics, elements that mutually interact etc. In this paper, we analyze induced voltages on practical pipeline system. Parametric analysis will show how far interventions on both systems can influence the induced voltages.
Key words: electromagnetic influence; gas; oil; pipelines; safety
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