Monitoring of wide area dynamics in power network through home power-outlet signal by GPS-Internet based devices

We have successfully measured the phase angle fluctuation among Hachinohe, Sendai (about 300 km far from Hachinohe), Akita (about 200 km far from Hachinohe) and Tokyo (about 700 km far from Hachinoihe) by using the GPS-Internet based PMU units, which was developed toy the collaboration of Hachinohe Institute of Technology and the Manufacture. Unique point of our work is in measure points of voltage signals. For enhancing the mobile ability and simplicity of measurement, the voltage phase angles are simultaneously measured through the home power-outlet (100 V) at the remote area by GPS-internet based PMU units. In this paper, we show the obtained results and the feasibility of the proposed monitoring system. Measured data of this monitoring system are surveyed by applying the modified moving average filtering and the FFT procedures.