marine grid survey

The modern world fleet is today equipped with frequency converters, computers, LED lighting, UPS etc. These products may reduce the energy consumption, however they come with several downsides.
 
They all create current harmonics; this is especially important to know about and handle on a vessel since it is an island grid with g enerators operating as a soft and sensitive grid.

 

PERFECT GRID QUALITY

The perfect power has a power factor of 1 where the current is in phase with the voltage for each phase. The phase voltage is phase shifted 120° without any unbalance. The voltage and current are sine wave.

The perfect power quality does not exist, however we can identify the non-ideal characteristics and come with improvements.

 

 

POOR GRID QUALITY

There are many known problems to poor marine power quality like:
    Overheating motors
    Overheating transformers
    Voltage dips
    Demaged equipment
    Unwanted tripping of breakers
    Shorter lifetime of equipment
    Non-compliant class requirement

 

GOOD GRID QUALITY

The benefits of an improved marine power grid are:
    Less problems and off-hire
    Longer lifetime of equipment
    Less fuel consumption
    Better economy
    Class complaint

 

OUR MARINE GRID SURVEY

STADT can support with a marine grid survey where we come onboard your ship for a power quality measurement. 

 

Our marine grid survey will include:
    Pre-study of the grid
    Measurement
    Grid Quality Report
    Suggestion for improvements