This paper summarized the main achievement oflow voltage variable frequency shore power project in Free TradeZone Wharf of Zhoushan.The project is building a 800 kVA lowvoltage frequency conversion intelligent shore power supply system.The system’s main characteristics are as follows.It will provide elec.trical energy for domestic and overseas ships; it can reduce the costof electricity and eliminate the pollution problem of ships’own gen.erators at the same time; it will incorporate the power supply of shipsinto the service scope of state grid.It is of great benefits for the ener.gy saving and emission reduction, environmental protection, improv.ing economic efficiency and so on.