OneStep Power Solutions Inc. services

Control system cross-connections have been identified by industry stakeholders as being a significant threat to the redundancy of Dynamically Positioned Vessels. A fault downstream of cross-connected power supplies, when propagated up to the power supplies, is considered to threaten both the power supplies. If the problem propagates through the power supplies to their source, all other consumers fed by the same source are also at risk. As such, in a cross-connection arrangement, a fault on one set of supplies could cause the loss of multiple sections of the vessel. With the advent of high reliability power supplies and electronic circuit protection devices, the risk of faults propagating through a DC cross-connection has decreased significantly.

When a short circuit fault occurs on a power system, it creates a complex sequence of events. Voltage drops suddenly, protection systems react, and voltage spikes when the fault clears. Critical equipment must continue operating through these harsh electrical transients. Traditionally, shipowners validate fault ride through by deliberately creating a live, bolted short circuit on the main busbar. This risks equipment damage. It also only validates protection systems involved in clearing that specific test fault. OneStep Power`s Fault Ride Through service provides comprehensive validation without live short circuits. We use advanced testing devices to safely recreate electrical transients on the main bus and across the whole distribution network. First, we perform primary injection testing to validate all current transformers and sensing devices. This ensures faults will be detected accurately.