New Method of Active Power Measurement under the Conditions of Non-Stationary Distortion Signals

Abstract

In this paper, a simplified model of grid signals is established under the conditions of non-stationary distorted signals. Then a new method of active power measurement is presented based on states of power-flow of grid signals and on the wavelet analysis. Finally, a simulation is given to verify the correctness of the method. The method will be to provide the theoretical basis for the development of the electricity metering. It has a practical significance and application prospects in the field of smart grid.

A Novel Bidirectional Interaction Model and Electric Energy Measuring Scheme of EVs for V2G with Distorted Power Loads

“…On the basis of [33] and [34], a bidirectional interaction model of EVs for V2G is established as shown in Fig. 1.…”

“…However, electric energy measuring methods for V2G have not been concerned widely, although there have been a large number of mature modeling methods [24][25][26], filtering algorithms [27][28][29], measurement techniques [30][31][32] and they have been successfully applied to actual systems in the field of industrial processes. Based on the idea of [33], we established the charging model and discharging model of EVs for V2G, and given the electric energy measuring formula in [34]. But they did not consider the effect of the distorted power loads that is always stayed in power grid when EVs are charging or discharging.…”