CUED Publications database

Secant and Popov-like Conditions in Power Network Stability

Lestas, IC and Monshizadeh, N Secant and Popov-like Conditions in Power Network Stability. Automatica, 101. pp. 258-268. ISSN 0005-1098 (Unpublished)

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Abstract

The problem of decentralized frequency control in power networks has received an increasing attention in recent years due to its significance in modern power systems and smart grids. Nevertheless, generation dynamics including turbine-governor dynamics, in conjunction with nonlinearities associated with generation and power flow, increase significantly the complexity in the analysis, and are not adequately addressed in the literature. In this paper we show how incremental secant gain conditions can be used in this context to deduce decentralized stability conditions with reduced conservatism. Furthermore, for linear generation dynamics, we establish Popov-like conditions that are able to reduce the conservatism even further by incorporating additional local information associated with the coupling strength among the bus dynamics. Various examples are discussed throughout the paper to demonstrate the significance of the results presented.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div F > Control
Depositing User: Cron Job
Date Deposited: 04 Dec 2018 01:27
Last Modified: 12 Dec 2019 02:00
DOI: 10.1016/j.automatica.2018.12.004