A review on distribution system state estimation uncertainty issues using deep learning approaches

This study highlights the research works on different uncertainty issues encountered in distribution system state estimation (DSSE). The DSSE plays a crucial role since the increasing use of renewable energy sources enforces the requirement of monitoring and controlling the distribution system for maintaining a resilient and efficient grid. The arrival of advanced intelligent devices together with the proper communication infrastructures has allowed the DSSE to maintain situational awareness of the system. DSSE imparts the solution of system states by processing the measurements received at the distribution management system. However, the uncertainties in the measurement data such as pseudo-measurement modeling, topology identification, and cyber attacks induce inaccurate solutions and convergence issues. In the modern scenario, machine learning (ML) algorithms and deep learning (DL) models are getting huge importance in various power system non-linear applications. In the recent literature, these ML algorithms and DL models have been applied to solve the uncertainty issues in DSSE to get an accurate solution. This study presents the various problems and challenges of DSSE input requirements which include accurate topology identification, observability, and accurate compensation of the measurements against false data injection attacks and denial-of-service attacks. Subsequently, the existing methods for handling the various uncertainty issues and the recent literature about the applicability of emerging ML/DL approaches in DSSE are discussed. Further, this review work highlights the importance of research in the direction of DSSE advancements so that more sophisticated ML/DL approaches can be developed to address DSSE in the future.