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DP2 Class Dive Vessel


PROJECT OVERVIEW:

GCS has supplied an engine - generator control and monitoring system for a DP - 2 Class dive vessel. The vessel utilizes five Caterpillar 3512B electronic diesel engi nes each rated for 1360 kW @ 1800 RPM. The generator sets are used for vessel prime power generation

TYPE OF VESSEL
  • DP - 2 Class Diving Vessel for of fshore inspection, repair, and maintenance, sub - sea pipeline installation and valve operations. Overall Length 240 ft . 4500 ft2 Clear Project Deck . 12 Man ABS SAT Dive System
TYPE OF PLANT
  • Prime Power Generation
PRIME MOVERS
  • (5x) Caterpillar 3512B Diesel Engine - Generators Each 1360 kW, 480 V @ 1800 RPM
CONTROL TECHNOLOGIES
  • Woodward Atlas Generator Control Package for synchronizing, load - sharing, protection, and monitoring.
  • Basler DECS - 200 Automatic Voltage Regulators
  • Woodward SPM - D Bus - Tie Automatic S ynchronizer
  • Woodward UMT Load Transducers for Dynamic Positioning System
  • Ethernet Network Inter - control network including remote I/O expansion modules, switches, and Modbus converters.
  • HMI System Touch - screen terminal in the switchgear for primary syste m operation including available remote system access.

The control system features custom application software performing automatic synchronization, load control, custom breaker control logic, and system al arm and monitoring functions. Due to the vessel ABS DP Clas s 2 rating, this system requires redundant inter - control networks for load sharing between engines. System load sharing is primarily carried out via the traditional Echelon LON network. In the e vent of a primary network failure, the control system alarms and automatically switches to the backup Modbus over Ethernet network in a bump - less fashion. Central monitoring and control is performed via a custom, GCS designed HMI system featuring a touch - screen terminal in the switchgear cabinet. The HMI provides the operator with complete system control including starting and stopping of the engines, synchronizat ion, breaker control , and primary/secondary network status . Remote control of the generators is also performed via interface to the vessel power management system.

This project is part of a major overhaul done to upgrade the vessel to DP - 2 class. Due to this classification, reliable power was necessary to supply the Z - Drive azimuth thrusters. With its modern control platform, t he new control system provides this reliability and required r edundancy not available with the old system




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