电力推进船舶的电能质量探讨

Discussion on Power Quality of Electric Propulsion Ship

电力推进船舶采用了大量非线性变频调速装置,这些装置产生的谐波电流及运行工况的改变都对电能质量造成不良影响。从船舶独立电网的角度出发,对电力推进船舶的电能质量进行探讨,重点分析了电压暂降与谐波问题。最后从提高电能质量的角度出发,提出了电力推进船舶系统的设计意见。

Electric propulsion ships are equipped with a large number of nonlinear variable frequency speed regulating devices. The harmonic currents of these devices and the changes in the operating conditions have a negative impact on the power quality. The power quality of electric propulsion ship is discussed from the point of ship independent power grid, and the problems of voltage sag and harmonic are analyzed emphatically. Finally, for improving the power quality, the design suggestion of electric propulsion ship system is proposed.