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van der Holst, B. (author), Verhoeven, G. (author), Nguyen, P. (author), Kok, K. (author), Emde, M.F. (author), Nutma, J.S. (author), la Fleur, S. (author)The increasing number of full-electric heat pumps (HPs) could potentially lead to congestion issues in future distribution grids. However, most modern HPs have the possibility to reduce demand during expected congestion events in a flexible manner. This study proposes a new approach for characterizing the potential downward flexibility of full...conference paper 2023
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Verhoeven, G. (author), van der Holst, B. (author), Sharma, S. (author), Kok, K. (author)Due to the increasing penetration of renewablebased distributed energy resources (DERs), the risks of congestion problems have been increasing in the Dutch distribution system. Traditionally, grid reinforcements were applied to prevent congestion, but due to shortages of technicians and due to long procedures, the use of flexibility from...conference paper 2022
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Vergara, P.P. (author), Subramanian, A. (author), van der Veen, A. (author), Kok, K. (author)In this paper, a co-simulation framework is presented to assess the impact on the distribution network of provision of support services (i.e. voltage support) by smart residential users. Such users are capable of providing flexibility by increasing/decreasing generation/consumption controlling the operation of an available set of flexible assets...conference paper 2021
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Demir, S. (author), Mincev, K. (author), Kok, K. (author), Paterakis, N.G. (author)Day-ahead electricity market (DAM) volatility and price forecast errors have grown in recent years. Changing market conditions, epitomised by increasing renewable energy production and rising intraday market trading, have spurred this growth. If forecast accuracies of DAM prices are to improve, new features capable of capturing the effects of...article 2020
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Hu, J. (author), Yang, G. (author), Ziras, C. (author), Kok, K. (author)The future renewable-based power system will have an increased need for balancing power. Prosumers, having both generation and consumption capabilities, are expected to provide balancing power to the grid, if their flexibility can be appropriately managed. Meanwhile, undesirable line congestions and voltage violations may arise in the...article 2019
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- Rassa, A. (author), van Leeuwen, C. (author), Spaans, R. (author), Kok, K. (author) article 2019
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Macdougall, P.A. (author), Ran, B. (author), Kok, K. (author)With the supply mix evolving to incorporate more and more uncontrollable renewable energy sources there is a need for more storage and demand response solutions. Aggregated demand response flexibility has been investigated in the past years as one of the potential solution this problem. This paper will investigate the potential impact on risks...conference paper 2016
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Navarro-Ortega, A. (author), Acuña, V. (author), Bellin, A. (author), Burek, P. (author), Cassiani, G. (author), Choukr-Allah, R. (author), Dolédec, S. (author), Elosegi, A. (author), Ferrari, F. (author), Ginebreda, A. (author), Grathwohl, P. (author), Jones, C. (author), Rault, P.K. (author), Kok, K. (author), Koundouri, P. (author), Ludwig, R.P. (author), Merz, R. (author), Milacic, R. (author), Muñoz, I. (author), Nikulin, G. (author), Paniconi, C. (author), Paunović, M. (author), Petrovic, M. (author), Sabater, L. (author), Sabaterb, S. (author), Skoulikidis, N.T. (author), Slob, A. (author), Teutsch, G. (author), Voulvoulis, N. (author), Barceló, D. (author)Water scarcity is a serious environmental problem in many European regions, and will likely increase in the near future as a consequence of increased abstraction and climate change. Water scarcity exacerbates the effects of multiple stressors, and thus results in decreased water quality. It impacts river ecosystems, threatens the services they...article 2015
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MacDougall, P. (author), Roossien, B. (author), Warmer, C. (author), Kok, K. (author)Renewable energy sources and other types of distributed generation are becoming ever more present in todays power supply mix. In addition, a change in electric load is being seen with the increase in electric heating and electric vehicles. These additions may create a number of challenges in the current electrical grid. At DSO level problems in...conference paper 2013
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Nyeng, P. (author), Kok, K. (author), Pineda, S. (author), Grande, O. (author), Sprooten, J. (author), Hebb, B. (author), Nieuwenhout, F. (author)The EcoGrid concept proposes to extend the current wholesale electricity market to allow participation of Distributed Energy Resources (DERs) and domestic end-consumers in system balancing. Taking advantage of the smart grid technology, the EcoGrid market publishes the real-time prices that entail an appropriate response of DERs and flexible...conference paper 2013
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Ding, Y. (author), Nyeng, P. (author), Ostergaard, J. (author), Trong, M.D. (author), Pineda, S. (author), Kok, K. (author), Huitema, G.B. (author), Grande, O.S. (author)This paper provides an overview of the Ecogrid EU project, which is a large-scale demonstration project on the Danish island Bornholm. It provides Europe a fast track evolution towards smart grid dissemination and deployment in the distribution network. Objective of Ecogrid EU is to illustrate that modern information and communication technology...conference paper 2012
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MacDougall, P.A. (author), Warmer, C. (author), Kok, K. (author)With the world becoming ever more conscious of the necessity for clean, sustainable energy sources, an increased proportion of energy produced by wind resources is expected. In the current power system, the integration of such large capacity of non-load-following and intermittent supply leads to several challenges, one of which is to control the...conference paper 2011