Hardware In the Loop Testing of Shipboard Power System's Management, Control and Protection

This paper presents a control hardware in the loop based testing methodology of shipboard power system's management, control and protection. A shipboard power system containing, two main diesels generators, an emergency generator, battery storage system, double propulsion system, hotel load, critical load and protection switches was modeled in details for the purpose of real time simulation. Ship mechanical characteristics were simplified. Real time simulator, industrial protection relay, panel PC for PMS and SCADA system were connected in a hardware in the loop testbed. Controllers for battery storage, propulsion and generators were modeled within the simulator. A functional PMS was developed using the presented testbed. PMS system was interfaced to lower level controllers and protection relays through Modbus and IEC61850 communication protocol. Various test scenarios were executed which can usually be done only during long and expensive see trials or cannot even be tested at all.