A new analysis method of inter-harmonic in power system using orthogonal basis neural network algorithm.

It is well known that the inter-harmonic is the harmonic which its frequency is not an integer of the fundamental frequency. It has serious impacts on the design of harmonic compensation equipments. Therefore it is important to measure accurately inter-harmonic. The neural network algorithm with the orthogonal basis functions was presented by which the amplitudes and phase of harmonic and inter-harmonic could be obtained very fast. To validate the algorithm's validity, the simulation example of inter-harmonic analysis was given. The results show that the proposed inter-harmonic analysis approach has high precision and fast training speed, so it could be applied to power system interharmonic analysis.