Analysis of the induction generator squirrel cage directly connected to the distribution network using pig methane gas

摘要

The aim of this study is the behavior of the squirrel-cage induction generator in distributed generation operating under real working conditions (presence of harmonics and voltage and current imbalance) connected directly to the distribution network. In this case, the primary machine has methane gas from pig farming as fuel. In distributed generation, there are technical, operational, quality, and safety problems (accidental supply to the distribution network by generators or distribution branches). In this work, the objective is to study the behavior of the squirrel-cage induction generator in the distributed generation, while operating in real operating conditions (presence of harmonics and voltage and current imbalance). In this way, the induction generator operates in unbalanced non-sinusoidal steady-state condition and a technical feasibility analysis when the generator loses the distribution network and does not require an islanding monitoring system due to demagnetization that occurs in the induction generator. The experimental tests are in steady state and with the squirrel-cage induction generator entering the island. Thus, the computer simulation was divided into two stages, first in the steady state and after the island analysis of the induction generator.