{"title":"An Evolutionary Particle Swarm Optimization, EPSO, approach to optimize the operation of hydro stations in market environment","authors":"A. S. Pacheco, J. Saraiva","doi":"10.1109/EEM.2014.6861211","DOIUrl":"https://doi.org/10.1109/EEM.2014.6861211","url":null,"abstract":"This paper describes the application of Evolutionary Particle Swarm Optimization, EPSO, to the optimization of the short term operation of hydro stations in market environment. The maximization of the revenues of hydro stations, namely pumping stations, is gaining increasing attention by generation companies. However, this is typically a complex problem given the non linear relation between the power, the flow and the head, the temporal coupling between stations in cascade and the increasing number of pumping stations. The EPSO based algorithm displayed a very good performance in terms of the quality of the final operation plan as well as regarding the speed of convergence and the robustness of the algorithm.","PeriodicalId":261127,"journal":{"name":"11th International Conference on the European Energy Market (EEM14)","volume":"385 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123437490","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":"Analysing the generation adequacy in power markets with renewable energy sources","authors":"S. Jaehnert, G. Doorman","doi":"10.1109/EEM.2014.6861225","DOIUrl":"https://doi.org/10.1109/EEM.2014.6861225","url":null,"abstract":"With an integrated operation and investment optimisation model, the system adequacy for power markets with a large share of renewable energy sources (RES) is assessed. The analyses address the effect of increasing RES penetration and a potential implementation of a capacity mechanism to tackle the resulting lack of generation capacity. Moreover, sensitivity analyses for the price cap as well as the share of elastic demand are executed, pinpointing to further possibilities for resolving the system adequacy issue. The analyses show that an increasing RES penetration has a significant effect on the system adequacy. However, the implementation of a capacity mechanism or an increased price cap as well as more demand elasticity can solve the challenge.","PeriodicalId":261127,"journal":{"name":"11th International Conference on the European Energy Market (EEM14)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115254084","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":"A new concept for the clearing of European Power Exchange day-ahead markets with complex orders","authors":"G. A. Dourbois, P. Biskas, A. Vlachos","doi":"10.1109/EEM.2014.6861236","DOIUrl":"https://doi.org/10.1109/EEM.2014.6861236","url":null,"abstract":"A new concept for the clearing of the day-ahead market of a European Power Exchange is proposed in this paper, bypassing the problems caused by the indivisibility of complex orders present in the European markets. The presence of complex orders may lead to paradoxically accepted and/or paradoxically rejected orders, necessitating the use of iterative heuristic procedures and empirical simplifying criteria for their handling. In this paper, the concept of “adjustable orders” is introduced, leading to a significant simplification in the handling of complex orders. The adjustable orders can be partially cleared, leading to orders that can be marginally accepted in the market clearing, setting the market prices accordingly for the hours involved in the orders. The complex orders that are used in this paper comprise profile block orders (offers/bids), flexible hourly orders and joint demand profile orders. The modeling of adjustable blocks is not possible as a MILP problem due to the inherent indivisibility denoted by the use of binary variables; instead, the day-ahead market clearing is formulated as a Mixed Complementarity Problem. The solution of the proposed MCP model is compared with the solution of the classical MILP model solution within an iterative procedure (employed in CWE and Nordpool) for the handling of paradoxically accepted/rejected orders.","PeriodicalId":261127,"journal":{"name":"11th International Conference on the European Energy Market (EEM14)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127934309","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":"Operation planning of a CSP plant in the spanish day-ahead electricity market","authors":"J. L. González, Ilias Dimoulkas, M. Amelin","doi":"10.1109/EEM.2014.6861303","DOIUrl":"https://doi.org/10.1109/EEM.2014.6861303","url":null,"abstract":"This paper addresses the short-term operation planning of a concentrated solar power (CSP) plant equipped with a backup fuel boiler and operating in the Spanish day-ahead electricity market. The problem is formulated as a mixed-integer linear programming model. Forecasted values of electricity prices and direct sun irradiation are considered. The main concern in the problem is to set an optimal use of the backup system in order to increase power generation and maximize the profits. Interaction between the solar and fuel heated systems is considered through heat balance constraints while parameters referring to the boiler are independent from the rest of the system allowing various types of boilers to be tested. A realistic case study provides results of a CSP plant operating a) without boiler, b) with a natural gas boiler and c) with a biomass boiler. Results demonstrate the advantages of the proposed model.","PeriodicalId":261127,"journal":{"name":"11th International Conference on the European Energy Market (EEM14)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128328865","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":"Evaluation of reactive power compensation on voltage stability and NTC values in the Swedish transmission network","authors":"M. Farrokhseresht, S. Rahimi, M. Hesamzadeh","doi":"10.1109/EEM.2014.6861299","DOIUrl":"https://doi.org/10.1109/EEM.2014.6861299","url":null,"abstract":"In this paper, the voltage stability of the Swedish grid is studied by a twofold approach. Firstly, the loads within Sweden are increased and the effect on the voltage of the tie-line buses is examined. Secondly, the exchanging of power between the two neighboring countries, Denmark and Finland, is taken into account. The main objective of this paper is to show that different reactive power compensation scenarios within the Swedish network and also in the vicinity of the tie-lines will improve the voltage stability of the whole system and also will increase the maximum power transfer on the tie-lines. With the method of this paper, we will be able to suggest the best places where the reactive power compensation can improve the voltage stability. Finally, an optimization problem for installing reactive power compensation from economic point of view is formulated. The CIGRÉ Nordic 32-A model has been used as test system and all the simulations have been done in PSS/E and Matpower.","PeriodicalId":261127,"journal":{"name":"11th International Conference on the European Energy Market (EEM14)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133374911","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":"Two-zone electricity equilibrium computation with Mixed Integer Programming","authors":"F. A. Campos, A. Roman, J. Villar, C. Díaz","doi":"10.1109/EEM.2014.6861226","DOIUrl":"https://doi.org/10.1109/EEM.2014.6861226","url":null,"abstract":"Cross-border energy markets are becoming more relevant and line congestions may cause significant modifications in their underlined bidding strategies, increasing the market power. This environment requires the development of new tools to measure biased behaviors, and also to try to mitigate them. The related literature makes use of techniques to simulate the bidding strategies, mostly based in optimization models, with or without equilibrium constraints, or mixed complementary problems, and embedded in ad-hoc iterative procedures. This paper presents a model for a two areas system, assuming a conjectural equilibrium. A Mixed Integer Programming method has been implemented to solve the equilibrium conditions, where a binary variable is used to represent the line's power flow status (congested or not) between both two areas. Instead of an ad-hoc algorithm, the Branch and Bound algorithm is used for the resolution, which can assure convergence in specific situations where previous algorithms may diverge.","PeriodicalId":261127,"journal":{"name":"11th International Conference on the European Energy Market (EEM14)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127066519","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}
J. Pereira, R. A. Ferreira, J. Sousa, J. Lagarto, Ana Martins
{"title":"Optimizing the renewable generation mix in the Portuguese power system based on temporal and spatial diversity","authors":"J. Pereira, R. A. Ferreira, J. Sousa, J. Lagarto, Ana Martins","doi":"10.1109/EEM.2014.6861292","DOIUrl":"https://doi.org/10.1109/EEM.2014.6861292","url":null,"abstract":"Renewable energy sources (RES) have unique characteristics that grant them preference in energy and environmental policies. However, considering that the renewable resources are barely controllable and sometimes unpredictable, some challenges are faced when integrating high shares of renewable sources in power systems. In order to mitigate this problem, this paper presents a decision-making methodology regarding renewable investments. The model computes the optimal renewable generation mix from different available technologies (hydro, wind and photovoltaic) that integrates a given share of renewable sources, minimizing residual demand variability, therefore stabilizing the thermal power generation. The model also includes a spatial optimization of wind farms in order to identify the best distribution of wind capacity. This methodology is applied to the Portuguese power system.","PeriodicalId":261127,"journal":{"name":"11th International Conference on the European Energy Market (EEM14)","volume":"506 Pt B 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126045207","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":"Transmission expansion planning considering wholesale electricity market and integration of renewable generation","authors":"A. Obushevs, I. Oleinikova","doi":"10.1109/EEM.2014.6861230","DOIUrl":"https://doi.org/10.1109/EEM.2014.6861230","url":null,"abstract":"A new network operation conditions creates new requirements for transmission planning which include electricity market figures and considerable integration of renewable generation. This paper focuses on transmission expansion planning techniques in a perfect competitive electricity market based on optimal power flows calculations with development planning and sustainability concept. For the proposed concept validation the Garvers's 6-bus test system was used. The simulation and validation results show the possibility of the ACOPF/DCOPF models implementation to transmission planning tasks solution.","PeriodicalId":261127,"journal":{"name":"11th International Conference on the European Energy Market (EEM14)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134390293","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}
D. Magagna, E. Tzimas, C. Hanmer, Abbie Badcock-Broe, Andrew MacGillivray, H. Jeffrey, A. Raventós
{"title":"SI-ocean strategic technology agenda for the ocean energy sector: From development to market","authors":"D. Magagna, E. Tzimas, C. Hanmer, Abbie Badcock-Broe, Andrew MacGillivray, H. Jeffrey, A. Raventós","doi":"10.1109/EEM.2014.6861284","DOIUrl":"https://doi.org/10.1109/EEM.2014.6861284","url":null,"abstract":"This paper focuses on the development of the ocean energy sector, identifying the necessary steps that are required in order to facilitate the development and deployment of ocean energy technologies towards the formation of a viable and successful industry. The paper presents recommendations, which represent a key opportunity to reinforce Europe's leadership in Research Development Innovation and Demonstration (RDI&D) as the ocean energy sector progresses from concept to commercialisation; highlighting mechanisms that are required to overcome existing challenges and barriers hindering the commercialisation of wave and tidal energy technologies.","PeriodicalId":261127,"journal":{"name":"11th International Conference on the European Energy Market (EEM14)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128889947","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}
Stavros Karagiannopoulos, E. Vrettos, G. Andersson, M. Zima
{"title":"Scheduling and real-time control of flexible loads and storage in electricity markets under uncertainty","authors":"Stavros Karagiannopoulos, E. Vrettos, G. Andersson, M. Zima","doi":"10.1109/EEM.2014.6861309","DOIUrl":"https://doi.org/10.1109/EEM.2014.6861309","url":null,"abstract":"In many countries, groups of producers and consumers are organized into virtual entities to participate in electricity markets. These entities are called balance groups (BGs), or are given similar names, because they are responsible for maintaining an energy balance for the group, and experience costs in case of imbalances. With large shares of uncertain renewable energy sources (RES), BGs are exposed to the risk of high balancing costs. In this paper, we propose a day-ahead (DA) scheduling and a real-time (RT) control scheme to minimize the spot market and balancing costs of a BG using flexible loads and storage resources. In the DA scheduling problem, we account for RES and price uncertainties by formulating a two-stage stochastic optimization problem with recourse. The RT control problem is formulated as a stochastic model predictive control (MPC) problem that uses short-term RES forecasts. We demonstrate the performance of the proposed scheme considering a BG with a wind farm, an industrial load, and a pumped-storage plant. The results show that the proposed scheme reduces the BG costs, but the cost savings vary and are case dependent.","PeriodicalId":261127,"journal":{"name":"11th International Conference on the European Energy Market (EEM14)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127232317","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}