{"title":"Stochastic optimization of natural gas portfolios","authors":"U. Padberg, H. Haubrich","doi":"10.1109/EEM.2008.4579051","DOIUrl":"https://doi.org/10.1109/EEM.2008.4579051","url":null,"abstract":"The liberalization of the European gas market causes significant changes in the natural gas sector as enterprises are now confronted with an environment of competition. So, an optimization of the portfolio of a natural gas trading enterprise becomes necessary, while planning uncertainties as well as technical and economical restrictions have to be considered. Therefore, in this work, a newly developed optimization method for calculating a profit-maximizing natural gas portfolio under consideration of planning uncertainties as well as technical and economical restrictions is developed. A standard mathematical solver is used to solve the optimization problem, which can be modeled as a mixed integer quadratic problem. First exemplary results show a significant optimization potential, which rises with the number of degrees of freedom and proves the functionality of the method for optimized deterministic and stochastic scenarios.","PeriodicalId":118618,"journal":{"name":"2008 5th International Conference on the European Electricity Market","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126878693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Energy taxation and renewable energy: Testing for incentives, framing effects and perceptions of justice in experimental settings","authors":"R. Menges, Stefan Traub","doi":"10.1109/EEM.2008.4579064","DOIUrl":"https://doi.org/10.1109/EEM.2008.4579064","url":null,"abstract":"This paper presents an experimental investigation of individual preferences for the consumption of green electricity under alternative payment vehicles for the promotion of renewables. The experimental design involves individual choice treatments as well as public choice treatments. We study differences in subjectspsila demand behaviour for green electricity with respect to free-riding, crowding-out effects and some other behavioral effects such as fiscal illusion. Our data highlight the large extent of free-riding in the private provision of the public good ldquoenvironmental qualityrdquo. Under the public choice treatments, subjects are willing to pay far higher contributions to green electricity than under the individual choice treatments. Moreover, regression analysis shows the sensitivity of average WTP to some subjective fiscal variables and identifies crowding-in as well as crowding-out effects. The conclusion can be drawn that individuals prefer binding collective contributions rather than individual market-driven activities in this field.","PeriodicalId":118618,"journal":{"name":"2008 5th International Conference on the European Electricity Market","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126912878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Energy auctions for regulated demand in the Iberian market: a proposal","authors":"J. Barquín","doi":"10.1109/EEM.2008.4579009","DOIUrl":"https://doi.org/10.1109/EEM.2008.4579009","url":null,"abstract":"The possible organization of auctions to meet regulated demand in the future Iberian electricity market (MIBEL) has prompted the present study. The current structure and operation of such auctions are reviewed and a procedure suitable for their institution on the MIBEL is proposed, in the context of the limited transmission capacity existing between Spain and Portugal.","PeriodicalId":118618,"journal":{"name":"2008 5th International Conference on the European Electricity Market","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122382244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Botterud, M. Mahalik, G. Conzelmann, R. Figueiredo Silva, S. Vilela, R. Pereira
{"title":"Multi-agent simulation of generation capacity expansion decisions","authors":"A. Botterud, M. Mahalik, G. Conzelmann, R. Figueiredo Silva, S. Vilela, R. Pereira","doi":"10.1109/EEM.2008.4579097","DOIUrl":"https://doi.org/10.1109/EEM.2008.4579097","url":null,"abstract":"In this paper, we use a multi-agent simulation model, EMCAS, to analyze generation expansion in the Iberian electricity market. The expansion model simulates generation investment decisions of decentralized generating companies (GenCos) interacting in a complex, multidimensional environment. A probabilistic dispatch algorithm calculates prices and profits for new candidate units in different future states of the system. Uncertainties in future load, hydropower conditions, and competitorspsila actions are represented in a scenario tree, and decision analysis is used to identify the optimal expansion decision for each individual GenCo. We run the model using detailed data for the Iberian market. In a scenario analysis, we look at the impact of market design variables, such as the energy price cap and carbon emission prices. We also analyze how market concentration and GenCospsila risk preferences influence the timing and choice of new generating capacity.","PeriodicalId":118618,"journal":{"name":"2008 5th International Conference on the European Electricity Market","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128381742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Issues and challenges of power sector reforms in a depressed economy","authors":"J. C. Ekeh","doi":"10.1109/EEM.2008.4579111","DOIUrl":"https://doi.org/10.1109/EEM.2008.4579111","url":null,"abstract":"Power sector reform has become an issue in the past few years. The key motivations are to achieve better service, reliable operation, and competitive rates. However, the restructuring of electric utilities in a depressed economy like Nigeria has introduced a number of new opportunities and challenges. The opportunities include simulation of indigenous technological development, creation of job for teaming graduates. More importantly the cost of doing business in Nigeria is bound to go down with better returns to investors and opening up new areas of manufacturing that once seemed unattractive for investors as a result of new reliance on uninterrupted power supply. The challenges are many and some of them include uncertainty in continuity of energy policies, politicising of the energy and power sector, Lack of local contents and weak indigenous private sector participations. Others are poverty and customers' inability to pay an economic and appropriate electricity tariff, uneven geographical locations of power generation plants, youth restiveness, compensation extortion, and vandalisation of gas pipelines, restricted primary energy sources and insufficient transmission line capabilities. These challenges require urgent solutions to facilitate the transition from regulated market to new deregulated market. The result of the study would be of guidance to power system engineers and managers, energy policy makers, and the governments of nations involved in the power system reforms and effective planning.","PeriodicalId":118618,"journal":{"name":"2008 5th International Conference on the European Electricity Market","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116539745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bo Yang, Y. Makarov, J. DeSteese, V. Viswanathan, P. Nyeng, B. McManus, J. Pease
{"title":"On the use of energy storage technologies for regulation services in electric power systems with significant penetration of wind energy","authors":"Bo Yang, Y. Makarov, J. DeSteese, V. Viswanathan, P. Nyeng, B. McManus, J. Pease","doi":"10.1109/EEM.2008.4579075","DOIUrl":"https://doi.org/10.1109/EEM.2008.4579075","url":null,"abstract":"Energy produced by intermittent renewable resources is sharply increasing in the United States. At high penetration levels, volatility of wind power production could cause additional problems for the power system balancing functions such as regulation. This paper reports some partial results of a project work, recently conducted by the Pacific Northwest National Laboratory (PNNL) for Bonneville Power Administration (BPA). The project proposes to mitigate additional intermittency with the help of Wide Area Energy Management System (WAEMS) that would provide a two-way simultaneous regulation service for the BPA and California ISO systems by using a large energy storage facility. The paper evaluates several utility-scale energy storage technology options for their usage as regulation resources. The regulation service requires a participating resource to quickly vary its power output following the rapidly and frequently changing regulation signal. Several energy storage options have been analyzed based on thirteen selection criteria. The evaluation process resulted in the selection of flywheels, pumped hydro electric power (or conventional hydro electric power) plant and sodium sulfur or nickel cadmium batteries as candidate technologies for the WAEMS project. A cost benefit analysis should be conducted to narrow the choice to one technology.","PeriodicalId":118618,"journal":{"name":"2008 5th International Conference on the European Electricity Market","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132777184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Harmonic current emission of photovoltaic installations under system conditions","authors":"Juergen Schlabbach","doi":"10.1109/EEM.2008.4579000","DOIUrl":"https://doi.org/10.1109/EEM.2008.4579000","url":null,"abstract":"Harmonic currents of PV-inverters show a significant dependency on the harmonic voltage content of the AC-system voltage. Measurements of harmonic currents were carried out in LV-systems and under laboratory test conditions with adjustable harmonic content of the AV-voltage. Two PV-inverters, one with coupling transformer and one without transformer were tested. The results indicated that the emitted harmonic currents depend strongly on the harmonic voltages prevailing in the AC-voltage. PV-inverters without transformer show significant lower harmonic currents than inverters with coupling transformer. The standard test conditions as defined in international standards does not consider real system conditions with respect to the harmonic voltages in system voltage. The measured currents as documented in data sheets are therefore comparatively lower than under the condition of real system operation.","PeriodicalId":118618,"journal":{"name":"2008 5th International Conference on the European Electricity Market","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128276806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Electricity consumption and economic growth in the European Union: A causality study using panel unit root and cointegration analysis","authors":"D.C. Bohm","doi":"10.1109/EEM.2008.4579055","DOIUrl":"https://doi.org/10.1109/EEM.2008.4579055","url":null,"abstract":"The climate change discussion and rising energy prices have resulted in an increase in the literature on the causal relationship between energy use and economic growth. In addition, there are also new developments in econometrics, most of all the use of panel unit root and cointegration techniques. However those techniques have not been applied in comparative studies covering the European electricity markets so far. The empirical investigation of the causality relationship between electricity demand and income for 15 European countries between 1978 and 2005 involves three steps. First, the order of integration is determined by applying standard ADF and panel unit root testing procedures. Second, cointegration techniques are performed in order to test for the long-run relationship between the variables in question. Finally, the existence and direction of causality in the short- and long-run will be assessed for each country by using vector error correction models and Granger causality tests.","PeriodicalId":118618,"journal":{"name":"2008 5th International Conference on the European Electricity Market","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133739685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Kwiatkowski, M. Przybylik, W. Luczak, M. Grodzki, M. Turek
{"title":"Process-based post-merger integration of utilities","authors":"A. Kwiatkowski, M. Przybylik, W. Luczak, M. Grodzki, M. Turek","doi":"10.1109/EEM.2008.4579006","DOIUrl":"https://doi.org/10.1109/EEM.2008.4579006","url":null,"abstract":"This paper sheds new perspectives on consolidation processes in the utilities sector. Consolidation is presented from the perspective of companies up against the challenge of integrating their operations. Special attention is placed on change management constraints in the integration of several utilities. Additionally, the authors present an approach which can support complex integration processes in the future. Ultimately, the authors argue that although social and regulatory constraints are strong, the consolidation wave will continue and the integration of market players will be a key lever to come out as winners over competition.","PeriodicalId":118618,"journal":{"name":"2008 5th International Conference on the European Electricity Market","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133403417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The electricity market as a multi-agent system","authors":"Paulo Trigo, P. Marques","doi":"10.1109/EEM.2008.4579092","DOIUrl":"https://doi.org/10.1109/EEM.2008.4579092","url":null,"abstract":"This paper proposes a multi-agent based simulation (MABS) framework to construct an artificial electric power market where heterogeneous, rationally bounded and learning agents co-evolve dynamically. The proposed framework aims to facilitate the integration of two MABS constructs: (i) the design of the environmental physical properties and entities, and (ii) the simulation models of resources and both the decision-making (deliberative) and reactive agents. The framework is materialized in an experimental setup involving distinct power generator companies which operate in the market and search for the trading strategies that best exploit their generating unitspsila resources. The experimental results show a coherent market behavior that emerges from the overall simulated environment.","PeriodicalId":118618,"journal":{"name":"2008 5th International Conference on the European Electricity Market","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115686932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}