Implementation of Kalman filtering in digital protection based on FPGA
Jiong Chen · Power System Protection and Control · 2009
Kalman filtering has advantages of high convergence speed and precision. However, it is hard to be realized because it has not only matrixes multiplication but also matrix inversion and iteration. A new kind of realization of Kalman filtering is introduced based on FPGA in this paper. Some transforms of the algorithm structure are made properly based on the characteristic of Kalman filtering in digital protection and structure characteristic. So the inverse matrixes which is difficult to implement and consecutive matrixes-multiplication which includes a large amounts of computation can be evaded and the iterative process is simplified to a great extent. Then the Kalman filtering is implemented based on hardware with the high speed and flexibility of FPGA.