Browsing by Author "Rudnick, H."
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- ItemAuction approaches of long-term contracts to ensure generation investment in electricity markets: Lessons from the Brazilian and Chilean experiences(ELSEVIER SCI LTD, 2010) Moreno, R.; Barroso, L. A.; Rudnick, H.; Mocarquer, S.; Bezerra, B.The implementation of auctions of long-term electricity contracts is arising as an alternative to ensure generation investment and therefore achieve a reliable electricity supply. The aim is to reconcile generation adequacy with efficient energy purchase, correct risk allocation among investors and consumers, and the politico-economic environment of the country. In this paper, a generic proposal for a long-term electricity contracts approach is made, including practical design concepts for implementation. This proposal is empirically derived from the auctions implemented in Brazil and Chile during the last 6 years. The study is focused on practices and lessons which are especially useful for regulators and policy makers that want to facilitate the financing of new desirable power plants in risky environments and also efficiently allocate supply contracts among investors at competitive prices. Although this mechanism is generally seen as a significant improvement in market regulation, there are questions and concerns on auction performance that require careful design and which are identified in this paper. In addition, the experiences and proposal described can serve to derive further mechanisms in order to promote the entrance of particular generation technologies, e.g. renewables, in the developed world and therefore achieve a clean electricity supply. (C) 2010 Elsevier Ltd. All rights reserved.
- ItemIdentification of Generation Expansion Plans in Competitive Markets(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2011) Cerda, P.; Larrain, M.; Rudnick, H.Generation expansion planning plays a key role in the development of a power system. This paper contributes by developing a heuristic based on the results of a simulation model of the Central Interconnected System (SIC), which iteratively optimizes the number of expansion units necessary to accomplish certain assumptions and restrictions that a competitive market must meet in the long term. The first approach is from the theoretical perspective, through a review of the available literature on the subject, and the analysis of the historical development that the generation segment has at SIC, from the private and regulator perspectives. Additionally, a discussion of concepts related to the structure and assumptions that must be met in a competitive market is achieved, allowing the definition of the rules that must be followed by the heuristic. The heuristic uses a model developed by Endesa Chile, called MHT, which simulates the economic dispatch of a hidro-thermal system. The disadvantage of MHT is the massive use of computer resources, employing extensive time to run. Therefore, a number of simplifications on the input data are proposed, to reduce the simulation time; however, they produce significant distortion on the results. The heuristic is applied to a significant number of cases with different initial conditions, demonstrating a satisfactory performance under all the scenarios, which is verified by the fact that investment in new generation capacity reaches the expected levels.