Abstract
The increasing penetration of inverter based renewable generation (RG) in the form of solar photo-voltaic (PV) or wind has introduced numerous operational challenges and uncertainties. According to the standards [1], [2], these generators are made to trip offline if their operating requirements are not met. In an RG-rich system, this might alter the system dynamics and/or cause shifting of the equilibrium points to the extent that a cascaded tripping scenario is manifested. The present work attempts at avoiding such scenarios by estimating the constrained stability region (CSR) inside which the system must operate using maximal level set of a Lyapunov function estimated through sum of squares (SOS) technique. A time-independent conservative approximation of the LVRT constraint is initially derived for a classical model of the power system. The proposed approach is eventually validated by evaluating the stability of a 3 machine test system with trip-able RG.
Original language | English (US) |
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Title of host publication | 2017 North American Power Symposium, NAPS 2017 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9781538626993 |
DOIs | |
State | Published - Nov 13 2017 |
Event | 2017 North American Power Symposium, NAPS 2017 - Morgantown, United States Duration: Sep 17 2017 → Sep 19 2017 |
Other
Other | 2017 North American Power Symposium, NAPS 2017 |
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Country/Territory | United States |
City | Morgantown |
Period | 9/17/17 → 9/19/17 |
Keywords
- Constrained stability region (CSR)
- direct methods
- low voltage ride through (L VRT)
- sum of squares (SOS)
ASJC Scopus subject areas
- Computer Networks and Communications
- Energy Engineering and Power Technology
- Control and Optimization
- Electrical and Electronic Engineering