Harmonie detection at initialization with Kaiman filter

Most power electronic equipment these days generate harmonic disturbances, these devices hold nonlinear voltage/current characteristic. The harmonics generated can potentially be harmful to the consumer supply. Typically, filters are integrated at the power source or utility location to filter out the affect of harmonics on the supply. For the detection of these harmonics various techniques are available and one of that technique is the Kaiman filter. In this paper we investigate that what are the consequences when harmonic detection system based on Kalman Filtering is initialized/switched on and at the same time harmonic/s are introduced in the system.