Electric Parameter Monitoring of Marine Power System Based on Data Fusion Theory
Wanneng Yu, Jianxin Zhu, Wei Gu · 2007
Because the traditional electric parameter monitoring methods of marine power system based on single measurement sensor possess many disadvantages,such as measurement value includs various noises produced by electric and magnetic field and measurement device etc.,which will greatly influence the accuracy of monitoring result and increase the uncertainty of result.A new parameter monitoring method of marine electric network based on data fusion theory applied state estimation technology and multisensor data fusion theory are proposed.The state models of the voltage and the current are established.In DSP the continuous signals from voltage and current sensor respectively are discreted;then Kalman filter and the distributed fusion without feedback are used to fuse these discrete measurement values,and the global fusion estimation can be got.Compared with the traditional method based on single measurement device,the method possesses better monitoring accuracy and stronger stability.Finally computer simulation results and test results show the validity and superiority of the monitoring method in the paper.