Knowledge of the standards accelerates the transition of the advanced technologies and allows one to do things right from the first attempt by establishing common requirements for all involved professions. Ieee Standard 1826-2012: IEEE Standard for Power Electronics Open System Interfaces in Zonal Electrical Distribution Systems Rated Above 100 kW This standard applies in cases where PE is the interface between the zones and extends the application of IEEE Standards 1662 and 1676. The required power, monitoring, information exchange, control, and protection interfaces are based on technological maturity, accepted practices, and allowances for future technology insertions with plug-and-play operability independently of the components' origin. The standard also defines how the openness of a system should be verified and validated. Shore Supply For a zonal power system to be open, each device attached to the power bus shall meet these criteria. 1) Each device shall implement a certain functionality that lets it "play well" with the other system components, including implementation of power control and safety features. 2) Each device shall conform to standard control and information interfaces. 3) Each device shall conform to standard power interfaces. Figure 4 shows the elements of a zonal power system and their power interfaces. The systems' interfaces in zonal distribution systems are based on the architectural principles derived from IEEE Standard Ship's Network 11 1 3 8 7 5 4 9 2 6 10 G 1 HV-Shore Supply System 7 Control 2 Shore Side Transformer 8 Ship Protection Relaying 3 Shore Side Protection Relaying 9 Shore Connection Switchboard 4 Shore Side Circuit Breaker and Earth Switch 10 Onboard Transformer (Where Applicable) 5 Control 11 Onboard Receiving Switchboard 6 Shore-to-Ship Connection and Interface Equipment Figure 5. A high-voltage dc (HVDC) cold ironing diagram. 38 I E E E E l e c t r i f i c ati o n M agaz ine / j un e 2015