The ship power quality monitoring system based on virtual instrument and configuration software

Ship power system is an independent and complete small-scale power system, which has high requirements for power quality. In order to real-time monitoring of ship power quality, a set of power quality monitoring system was developed using virtual instrument technology and configuration software. Real data were picked by DSP, analyzed and processed by Lab VIEW. Power quality including deviation of supply voltage, deviation of frequency, harmonics, three-phase voltage unbalance factor and voltage fluctuation and flicker is calculated. And synthetic evaluation for power quality was realized using those indexes. The key data in the power quality monitoring station were sent to the ship energy management system (SEMS), for the using of unified energy management.