Multi‐scale AC−DC system voltage security regions

On-Line Voltage Security Assessment of the Hellenic Interconnected System

This paper describes the on-line Voltage Security Assessment environment developed within the framework of the EU-sponsored OMASES project, as well as its application to the Greek Interconnected Power System. The heart of all computations is a fast time-domain method. Security is analyzed with respect to power transfers in critical corridors or power consumption in load areas. Results take on t...

Voltage Security Margin Assessment

Risk Based Voltage Security Assessment

The objective of this paper is to provide a risk-based approach to security assessment for a voltage stability constrained power system. It is motivated by a perception that today’s deterministic reliability criteria to voltage stability assessment often results in operating restrictions that are not commensurate with the corresponding level of risk. The risk calculation provided in this paper ...

Multiscale System Theory

In many applications, it is of interest to analyze and recognize phenomena occurring at different scales. The recently introduced wavelet transforms provide a time-and-scale decomposition of signals that offers the possibility of such an analysis. Until recently, however, there has been no corresponding statistical framework to support the development of optimal, multiscale statistical signal p...

ACDC: An Algorithm for Comprehension-Driven Clustering

The software clustering literature contains many diierent approaches that attempt to automatically decompose software systems. These approaches commonly utilize criteria or measures based on principles such as high cohesion and low coupling, information hiding etc. In this paper, we present an algorithm that subscribes to a philosophy targeted towards program comprehension and based on subsyste...