CAP Seminar Series

ApostolopoulouTitle: Optimal operation of hybrid hydro-solar systems under uncertainty

SpeakerDr Dimitra ApostolopoulouCity, University of London

Venue: EEE 1109B (CAP seminar room)

Date and Time: Thursday 07/02/2019 14:00-15:00

AbstractRenewable-based resources have been integrated into power systems at a very high pace the last decades. As a result, the net load, i.e., the difference of load demand and generation of renewable resources, is highly variable and uncertain. A method of mitigating the risks associated with uncertainty sources related to renewable-based generation is with the development of hybrid energy systems. The hybridisation of energy systems is useful especially when complementary resources are coupled, e.g., hydro and solar generation are nicely coupled. Hydroelectric power systems are fitting candidates since they have good ramping capability and energy storage possibility in form of hydro reservoirs. Energy storage adds substantial degrees of flexibility and “dispatchability” in a highly stochastic future power system. Optimising the dispatch of such a hybrid system is a non-convex, potentially large scale problem. In this talk, a computationally efficient, highly scalable solution, including convex relaxations will be presented. In addition, uncertainty in the net load and the inflows to the hydroelectric system will be considered to construct a robust short-term optimal dispatch framework for a hybrid hydro-solar system. The developed robust variant is intractable due to the infinite number of constraints. Using tools from robust optimisation, the resulting problem is reformulated in a tractable form that is amenable to existing numerical tools and is used to show that the computed dispatch is immunised against uncertainty.

BiographyDr Dimitra Apostolopoulou is a Lecturer at the Department of Electrical and Electronic Engineering at City University of London. Prior to her current appointment, she was a Postdoctoral Researcher in the Engineering Department and a Lecturer at Christ Church College at University of Oxford. Previously, she worked at the Smart Grid & Technology Department in Commonwealth Edison (ComEd) at Chicago – a unit of Exelon Corp. (Chicago, Illinois, U.S.) that provides service to approximately 3.8 million customers. She was awarded a Ph.D. and a M.S. in Electrical and Computer Engineering from University of Illinois at Urbana-Champaign in 2014 and 2011, respectively and her undergraduate degree in Electrical and Computer Engineering from National Technical University of Athens, Greece in 2009. Her research lies on the interface of power and energy systems, decision and control, economics and energy policy.

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Title: Smart Energy Solutions for Renewable Energy Systems

Speaker: Dr Qiuwei Wu, Technical University of Denmark (DTU)

Venue: EEE 1109B (CAP seminar room)

Date and Time: Wednesday 27/02/2019 14:00-15:00

AbstractEnvironmental concerns and the quest for energy supply independence have resulted in increasing penetration of renewable energy sources (RESs) and a move toward electrification of transportation and heating. With the long term goal of developing renewable based energy systems, the integration of electricity, heat and gas systems has become necessary in order to realize efficient and secure operation of the future renewable based energy systems. The interactions among electricity, heat and gas sectors can provide further flexibility to handle the fluctuations from renewables. In the talk, the smart energy solutions for the 2050 Danish energy systems will be introduced which integrates multi-energy sectors. In the end, the Power2Gas technology will be introduced and its technical and economic feasibility in the future energy system will be discussed.

BiographyQiuwei Wu (M’08-SM’15) obtained the PhD degree in Power System Engineering from Nanyang Technological University, Singapore, in 2009. He was a senior R&D engineer with Vestas Technology R&D Singapore Pte Ltd from Mar. 2008 to Oct. 2009. He has been working at Department of Electrical Engineering, Technical University of Denmark (DTU) since Nov. 2009 (PostDoc Nov. 2009-Oct. 2010, Assistant Professor Nov. 2010-Aug. 2013, Associate Professor since Sept. 2013). He was a visiting scholar at Department of Industrial Engineering & Operations Research (IEOR), University of California, Berkeley, from Feb. 2012 to May 2012 funded by the Danish Agency for Science, Technology and Innovation (DASTI), Denmark. He was a visiting professor named by Y. Xue, an Academician of Chinese Academy of Engineering, at Shandong University, China, from Nov. 2015 to Dec. 2017. He was a visiting scholar at School of Engineering and Applied Sciences, Harvard University from Nov. 2017 to Oct. 2018 funded by the Otto Monsteds Fond. Currently, he is an adjunct professor at Shandong University. His research interests are power system operation and control with renewables, including modeling and control of wind power, active distribution networks, and operation and real time control of integrated energy systems. He has published 92 SCI indexed journal papers, 25 other journal papers, and 73 conference papers. He is an Editor of IEEE Transactions on Smart Grid and IEEE Power Engineering Letters. He is also an Associate Editor of International Journal of Electrical Power and Energy Systems, and Journal of Modern Power Systems and Clean Energy. He is a Subject Editor for IET Renewable Power Generation, and IET Generation, Transmission & Distribution.

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Past talks of CAP Seminar Series