On-line voltage security assessment of the hellenic interconnected system

Abstract

Abstract-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 the form of either precontingency secure operation limits, or post-contingency loadability limits, together with various diagnosis tips. Typical results obtained during the test phase of the project are reported.

On‐line dynamic security assessment to mitigate the risk of blackout in the Italian power system

“…The VSA application function [21] integrates software tools for the assessment of voltage security into the DSA package of the OMASES platform. This includes, among others, the analysis of the impact of significant contingencies and the determination of secure operation limits in terms of power transfers in critical corridors or power consumption in load areas [15].…”

Omases: a dynamic security assessment tool for the new market environment

“…Some results are presented, also with the aim of showing the output layout of the VSA function. Analogous simulations and results are presented in [3].…”

“…The validation, that has recently started, is expected to address the issues related to transient and voltage stability. The Greek site [3] is also testing the training simulator and the market simulator. Within the experimentation phase, OMASES is going to be tested both in the Engineering mode (off-line) and in the Real-time mode (on-line).…”

“…The paper will particularly focus on the Italian experimental site and will provide information on the individuated scenarios to be used to test the DSA functions included in OMASES. The second experimental site, located at the Greek TSO (HTSO), is addressed in another paper [3]. [2], [4], [5] to use them in the Real-time mode and to include them into realistic Training mode.…”