A Survey on State Estimation Techniques and Challenges in Smart Distribution Systems

TL;DR

This survey reviews the current state estimation techniques for distribution systems, highlighting challenges, recent advancements, and future research directions in the context of increasing renewable integration and cyber-security concerns.

Contribution

It provides a comprehensive overview of both traditional and modern DSSE methods, identifying key challenges and outlining future research opportunities.

Findings

Review of mathematical formulations and techniques used in DSSE

Analysis of the impact of renewable energy and cyber-security on DSSE

Identification of research gaps and future directions in DSSE

Abstract

This paper presents a review of the literature on State Estimation (SE) in power systems. While covering some works related to SE in transmission systems, the main focus of this paper is Distribution System State Estimation (DSSE). The paper discusses a few critical topics of DSSE, including mathematical problem formulation, application of pseudo-measurements, metering instrument placement, network topology issues, impacts of renewable penetration, and cyber-security. Both conventional and modern data-driven and probabilistic techniques have been reviewed. This paper can provide researchers and utility engineers with insights into the technical achievements, barriers, and future research directions of DSSE.