Voltage stability analysis of DC ship power system with pulse load

Abstract

With the continuous development of pulse load represented by laser weapon and electromagnetic railgun, its application to the naval combat platform becomes a tendency. These pulse loads have the characteristic of high power as well as instantaneous which will impact the volume limited DC ship power system and challenge its stability. For this purpose, the simulation model of a medium voltage DC ship power system is built in PSCAD/EMTDC. Choose electromagnetic railgun which has two-level energy storage system as the representation of the pulse load. The model of the railgun is built through derivation then added to the DC ship power system to study the influence it does to the system voltage stability. The small disturbance method is used to compute the voltage stability of the whole system and the result is compared with the simulation figures. The comparison shows that the two-level energy storage based electromagnetic railgun can works normally in the system thus provides a new method to the way that the pulse load applies to the DC ship power system.

Keywords

• marine power systems
• energy storage
• railguns
• power system simulation
• ships
• power system stability
• weapons
• EMTP
• power system CAD
• power system faults
• voltage stability analysis
• electromagnetic railgun
• medium voltage DC ship power system
• two-level energy storage system
• system voltage stability
• pulse load development
• laser weapon
• naval combat platform
• high power characteristics
• volume limited DC ship power system
• PSCAD-EMTDC
• small disturbance method