Real-Time Monitoring of Distributed Generation Based on State Estimation and Hypothesis Testing

This paper presents an application of state estimation to the problem of monitoring distributed generation in distribution systems. The proposed method provides a tool to check whether the current levels of distributed generation installed on a distribution feeder is consistent with the values expected by the system operator. If that is not the case, statistical hypothesis tests are performed to identify the generating units whose outputs are inconsistent with the measurements taken along the feeder. In addition, the method can also provide estimates for the unknown generated power outputs. Simulations carried out with the IEEE 34-bus test feeder are used to illustrate the proposed method´s performance.