抄録
As for harmonic, which is one of the electric power qualities, it becomes important to obtain harmonic voltage/current distribution of the power system precisely because the use of power electronic apparatus is increasing widely. However, there are some difficulties on evaluating the measured data in comparison with the simulated results; i.e. measurement errors of the harmonic voltage/current, difficulty of the synchronized measurement at several substations and so on. In order to evaluate power system harmonics precisely, we applied the harmonic state estimation method to power system of our company and verified the method.This paper describes the research that precision grasps of the harmonic distribution in power system by using the multi-function measuring system via GPS and harmonic state estimation method.
