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Power Producers (power + producers)
Selected AbstractsEU energy-intensive industries and emission trading: losers becoming winners?ENVIRONMENTAL POLICY AND GOVERNANCE, Issue 5 2009Jorgen Wettestad Abstract The EU Emissions Trading System (ETS) initially treated power producers and energy-intensive industries similarly, despite clear structural differences between these industries regarding e.g. pass-through of costs. Hence, the energy-intensive industries could be seen as losing out in the internal distribution. In the January 2008 proposal for a reformed ETS post-2012, a differentiated system was proposed where the energy-intensive industries would come out relatively much better. Why is this? Although power producers still have a dominant position in the system, the increasing consensus about windfall profits has weakened their standing. Conversely, increasing attention to such profits and not least the possibility of global carbon leakage has strengthened the case of energy-intensive industries at both national and EU levels. These industries have become more active in EU processes and somewhat better organized. Finally, growing fear of lax global climate policies has strengthened the case of these industries further. Copyright © 2009 John Wiley & Sons, Ltd and ERP Environment. [source] Optimal production cost of the power producers with linear ramp model using FDR PSO algorithmEUROPEAN TRANSACTIONS ON ELECTRICAL POWER, Issue 2 2010M. Anitha Abstract In practice, the power producers have to be rescheduled for power generation beyond their power limits to meet vulnerable situations like credible contingency and increase in load conditions. During this process, the ramping cost is incurred if they violate their permissible elastic limits. In this paper, optimal production costs of the power producers are computed with ramping cost considering stepwise and piecewise linear ramp rate limits using fitness distance ratio particle swarm optimization (FDR PSO) algorithm. Transient stability constraints are also considered while formulating the optimal power flow (OPF) problem as additional rotor angle inequality constraints. The proposed algorithm is demonstrated on a practical 39 bus New England and 62 bus Indian Utility system with different case studies. Copyright © 2008 John Wiley & Sons, Ltd. [source] Advanced and intelligent technologies for reliable operation of power systems and electricity marketsIEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING, Issue 5 2008Ryuichi Yokoyama Senior Member Abstract Deregulation of power industries is still progressing in many countries, aiming at reduction of the electricity price, diversity of customer diverse choices, services and promotion of new business and keeping supply reliability. Many countries are testing this notion in anticipation of lower power prices through open competition. In such a competitive situation, it is necessary for suppliers to take on the responsibility of keeping supply reliability at the load end in order to prevent outages, for instance, independent power producers (IPP) placing distributed generations (DGs) close to the load or conventional utilities utilizing advanced and intelligent system operation/control technologies that are costly. Usually, customers pay one price for power that is good enough for ordinary use, therefore not necessarily highly consistent in quality of voltage, current, frequency or reliability. However, if customers desire better quality power, additional fees are added according to the particular characteristics desired, thus customers are supplied with this type of better power that they choose. Under such a worldwide new trend in power systems and markets, this article is edited for the purpose of introducing the most advanced technologies and the newest issues related to reliable and stable operations of power markets and systems in the competitive environment. © 2008 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. [source] Comparison of phosphocreatine concentration in the human masseter and medial pterygoid muscles by 31P-CSIJOURNAL OF ORAL REHABILITATION, Issue 11 2001T. Kanayama The aim of this study is to compare phosphocreatine (PCr) concentrations of human masseter and medial pterygoid muscles by a recently developed localized magnetic resonance spectroscopy (MRS) method, chemical shift imaging (CSI). The characteristic spectra of phosphorous metabolites including PCr and ,-ATP from the superficial part of the masseter (SM) and the deep part of the masseter (DM) and the medial pterygoid muscles (MPt) from 11 volunteers, 20,27-year-old were obtained. The study clearly demonstrated higher PCr/,-ATP in the SM and MPt than in the DM both in mean values (P < 0·01) and in individual subjects. The results indicate that SM and MPt are power producers. There were no significant differences in the mean values of the PCr/,-ATP ratios in SM and MPt, however, the PCr/,-ATP ratios varied individually and the subjects could be divided into three distinct groups: values of MPt higher than SM (group A, 4 subjects); values of MPt almost equal to SM (group B, 3 subjects); and values of MPt lower than SM (group C, 4 subjects). There appears to be a close relationship between the PCr content as determined in the groups here and occlusal guidance. [source] | ||||||||||