Supporting security and adequacy in future energy systems: The need to enhance long-term energy system models to better treat issues related to variability

Welsch M, Howells M, Hesamzadeh MR, O'Gallachoir B, Deane P, Strachan N, Bazilian M, Kammen DM, et al. (2015). Supporting security and adequacy in future energy systems: The need to enhance long-term energy system models to better treat issues related to variability. International Journal of Energy Research 39 (3): 377-396. DOI:10.1002/er.3250.

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Abstract

As the shares of variable renewable generation in power systems increase, so does the need for, inter alia, flexible balancing mechanisms. These mechanisms help ensure the reliable operation of the electricity system by compensating for fluctuations in supply or demand. However, a focus on short-term balancing is sometimes neglected when assessing future capacity expansions with long-term energy system models. Developing heuristics that can simulate short-term system issues is one way of augmenting the functionality of such models. To this end, we present an extended functionality to the Open Source Energy Modelling System (OSeMOSYS), which captures the impacts of short-term variability of supply and demand on system adequacy and security. Specifically, we modelled the system adequacy as the share of wind energy is increased. Further, we enable the modelling of operating reserve capacities required for balancing services. The dynamics introduced through these model enhancements are presented in an application case study. This application indicates that introducing short-term constraints in long-term energy models may considerably influence the dispatch of power plants, capacity investments, and, ultimately, the policy recommendations derived from such models.

Item Type: Article
Uncontrolled Keywords: Energy systems modelling; Operating reserve; Capacity credit; Variable renewable energy
Research Programs: Energy (ENE)
Bibliographic Reference: International Journal of Energy Research; 39(3):377-396 (March 2015) (Published online 24 August 2014)
Depositing User: IIASA Import
Date Deposited: 15 Jan 2016 08:53
Last Modified: 23 Feb 2016 12:42
URI: http://pure.iiasa.ac.at/11508

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