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12 results on '"Ekomwenrenren, Etinosa"'

1. Data-Driven Fast Frequency Control using Inverter-Based Resources

Author

Ekomwenrenren, Etinosa, Simpson-Porco, John W., Farantatos, Evangelos, Patel, Mahendra, Haddadi, Aboutaleb, and Zhu, Lin

Subjects
Electrical Engineering and Systems Science - Systems and Control
Abstract

To address the control challenges associated with the increasing share of inverter-connected renewable energy resources, this paper proposes a direct data-driven approach for fast frequency control in the bulk power system. The proposed control scheme partitions the power system into control areas, and leverages local dispatchable inverter-based resources to rapidly mitigate local power imbalances upon events. The controller design is based directly on historical measurement sequences, and does not require identification of a parametric power system model. Theoretical results are provided to support the approach. Simulation studies on a nonlinear three-area test system demonstrate that the controller provides fast and localized frequency control under several types of contingencies.

Published
2023

2. Data-Driven Fast Frequency Control using Inverter-Based Resources

Author

Ekomwenrenren, Etinosa, Simpson-Porco, John, Farantatos, Evangelos, Patel, Mahendra, Haddadi, Aboutaleb, and Zhu, Lin

Subjects
Electrical Engineering and Systems Science - Systems and Control
Abstract

We develop and test a data-driven and area-based fast frequency control scheme, which rapidly redispatches inverter-based resources to compensate for local power imbalances within the bulk power system. The approach requires no explicit system model information, relying only on historical measurement sequences for the computation of control actions. Our technical approach fuses developments in low-gain estimator design and data-driven control to provide a model-free and practical solution for fast frequency control. Theoretical results and extensive simulation scenarios on a three area system are provided to support the approach., Comment: In proceedings of the 11th Bulk Power Systems Dynamics and Control Symposium (IREP 2022), July 25-30, 2022, Banff, Canada

Published
2022

3. A Multi-Area Architecture for Real-Time Feedback-Based Optimization of Distribution Grids

Author

Farhat, Ilyas, Ekomwenrenren, Etinosa, Simpson-Porco, John W., Farantatos, Evangelos, Patel, Mahendra, Haddadi, Aboutaleb, Farhat, Ilyas, Ekomwenrenren, Etinosa, Simpson-Porco, John W., Farantatos, Evangelos, Patel, Mahendra, and Haddadi, Aboutaleb

Abstract

A challenge in transmission-distribution coordination is how to quickly and reliably coordinate Distributed Energy Resources (DERs) across large multi-stakeholder Distribution Networks (DNs) to support the Transmission Network (TN), while ensuring operational constraints continue to be met within the DN. Here we propose a hierarchical feedback-based control architecture for coordination of DERs in DNs, enabling the DN to quickly respond to power set-point requests from the Transmission System Operator (TSO) while maintaining local DN constraints. Our scheme allows for multiple independently-managed areas within the DN to optimize their local resources while coordinating to support the TN, and while maintaining data privacy; the only required inter-area communication is between physically adjacent areas within the DN control hierarchy. We conduct a rigorous stability analysis, establishing intuitive conditions for closed-loop stability, and provide detailed tuning recommendations. The proposal is validated via case studies on multiple feeders, including IEEE-123 and IEEE-8500, using a custom MATLAB-based application which integrates with OpenDSS. The simulation results show that the proposed structure is highly scalable and can quickly coordinate DERs in response to TSO commands, while responding to local disturbances within the DN and maintaining DN operational limits., Comment: 13 pages, 11 figures, for the supplement document (pdf), see https://1drv.ms/b/s!AmH_VfOdVVKazYUpDEVplHjtvj-7ZA?e=oyfXD4

Published
2024

10. A stabilising control strategy for Cyber-Physical Power Systems

Author

Ekomwenrenren, Etinosa, Alharbi, Hatem, Elgorashi, Taisir, Elmirghani, Jaafar, and Aristidou, Petros

Subjects
bepress|Engineering, engrXiv|Engineering|Electrical and Computer Engineering|Systems and Communications, bepress|Engineering|Electrical and Computer Engineering|Power and Energy, bepress|Engineering|Electrical and Computer Engineering|Systems and Communications, engrXiv|Engineering|Electrical and Computer Engineering|Power and Energy, Power and Energy, Electrical and Computer Engineering, Engineering, engrXiv|Engineering, Controls and Control Theory, Systems and Communications, bepress|Engineering|Electrical and Computer Engineering, bepress|Engineering|Electrical and Computer Engineering|Controls and Control Theory, engrXiv|Engineering|Electrical and Computer Engineering, engrXiv|Engineering|Electrical and Computer Engineering|Controls and Control Theory
Abstract

The cyber-physical nature of electric power systems has increased immensely over the last decades, with advanced communication infrastructure paving the way. It is now possible to design wide-area controllers, relying on remote monitor and control of devices, that can tackle power system stability problems more effectively than local controllers. However, their performance and security relies extensively on the communication infrastructure and can make power systems vulnerable to disturbances emerging on the cyber side of the system. In this paper, we investigate the effect of communication delays on the performance and security of wide-area damping controllers (WADC) designed to stabilise oscillatory modes in a Cyber-Physical Power System (CPPS). We propose a rule-based control strategy that combines wide-area and traditional local stabilising controllers to increase the performance and maintain the security of CPPS. The proposed strategy is validated on a reduced CPPS equivalent model of Great-Britain (GB).

Published
2018

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