A short survey of methods for voltage instability detection

TLDR

This paper surveys existing and proposed methods for voltage instability detection and outlines future research directions. It reviews methods based on real‑time and long‑term measurements, classifying them by measurement configuration (local vs wide‑area, SCADA vs synchrophasor) and summarizing their key features, advantages, and limitations. A key finding is that these methods can anticipate voltage instability.

Abstract

This paper shortly surveys existing and proposed methods for voltage instability detection. The emphasis is on methods relying on real-time measurements as well as on long-term voltage instability. Methods are classified according to the required measurement configuration: local vs. wide-area, standard SCADA-type vs. synchronized phasor measurements, etc. In the various categories, some of the features are summarized, and what appears to the authors as advantages or limitations is shortly discussed. An important feature is the ability to anticipate instability. Some tracks for further work on the subject are also outlined.