Grid Impedance Monitoring System for Distributed Power Generation Electronic Interfaces

This paper proposes a grid impedance monitoring system for distributed power generation electronic interfaces. The system estimates the grid equivalent impedance and voltage source from the voltage measurements performed at the point of common coupling. The estimation algorithm is based on a recursive least-squares algorithm implemented in the complex field. Simultaneously, the system evaluates the quality of the estimation, minimizing its influence on the grid and detecting islanding situations. The proposed system performance has been evaluated under experimental testing.

impedance; monitoring; distributed power generation; photovoltaic systems; power system modeling; recursive estimation; wind turbines; voltage measurement; performance evaluation; system performance; voltage measurement; distributed power generation; electric impedance measurement; least squares approximations; power grids; power system measurement; recursive estimation

Grid Impedance Monitoring System for Distributed Power Generation Electronic Interfaces Articles