Top tensioned marine risers may experience collision due to harsh weather conditions and strong currents. To avoid collision between the risers, even under changing environmental conditions, a supervisory switched controller was proposed. This included the controller architecture and the riser operational conditions. A case study showed how the controller switched according to the environmental disturbances and the riser behavior with satisfactory performance. For a riser array in deep waters interference between individual risers exposed to strong ocean current and/or large TLP (Tension Leg Platform) motions is of concern. The lateral deflections are likely to be large, and the risers may experience collision with fatigue or surface damage as a consequence. A case study shows how the controller structure and parameters change according to the environmental conditions and the riser behavior.
Supervisory switched control of marine risers
Geschaltete Überwachungskontrolle von Stahltrossen von Halbtaucherbohrinseln
2007
6 Seiten, 8 Bilder, 2 Tabellen, 8 Quellen
(nicht paginiert)
Conference paper
Storage medium
English
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