Harmonic State and Power Flow Estimation in Distribution Systems Using Evolutionary Strategy

The increasing use of non-linear loads in industry makes relevant monitoring the levels of harmonic distortion in the electrical systems. However even with the reduction of costs associated with the acquisition of power quality meters installing them in all the buses of a distribution system is uneconomical. In this context it is proposed in this article an algorithm based on evolutionary strategies able to estimate the harmonic distortion and power flow in fundamental frequency of a distribution system monitoring only a few buses. The performance of the proposed algorithm will be evaluated in IEEE 5-bus and IEEE 14-bus systems.