2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)最新文献

{"title":"Towards stabilization of bio-oil by addition of antioxidants and solvents, and emulsification with conventional hydrocarbon fuels","authors":"P. Udomsap, Yapp Hionk Yeinn, J. Hui, B. Yoosuk, S. Yusuf, S. Sukkasi","doi":"10.1109/ICUEPES.2011.6497720","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497720","url":null,"abstract":"Bio-oil is liquid fuel produced by fast pyrolysis, typically, of biomass. Bio-oil comprises a mixture of highly oxygenated compounds, carboxylic acids and trace water. Upgraded bio-oil can be used as a substitute for conventional fuels. However, bio-oil is inherently unstable. The various compounds in bio-oil can react through many chemical reactions, such as polymerizations, during the storage of bio-oil, resulting in adverse changes in the bio-oil's properties, especially increasing viscosity over time. In the present study, three sets of methods to improve the bio-oil's stability were investigated: addition of antioxidants, addition of solvents, and emulsification with conventional hydrocarbon fuels. In the first set of methods, three kinds of antioxidants (propyl gallate, tert-butyl hydroquinone, and butylatedhydroxyanisole) were added in 1000-ppm concentration to bio-oil. In the second set, 10wt% of solvents, including acetone, biodiesel, ethanol, ethyl acetate, and methanol, were added to the bio-oil. Finally, the third set involved emulsification of bio-oil with different conventional hydrocarbon fuels, including diesel, gasoline, and biodiesel, using octanol as a surfactant. All test samples were subjected to accelerated aging, involving exposure to high temperature of 80°C for 5 days. The viscosity of the samples, chosen as the main indicator of the aging, was measured daily. The results showed that under the accelerated testing conditions, pure bio-oil aged significantly, with 44.65% increase in viscosity. The bio-oil with antioxidants, on the other hand, aged more slowly, with 17-20% viscosity increase. The addition of solvents also slowed down the aging drastically, especially in the case of biodiesel, with only 4.91% viscosity increase. Emulsification with conventional hydrocarbon fuels also showed promising results, with similar trends to those of antioxidant and solvent addition. All results showed that the three sets of stabilizing methods can improve the bio-oil's stability significantly, with slightly varying degree of effectiveness. Selection of an optimal method in practice depends on the particular constraints and circumstances of each operation.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126703393","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 multi-agent based power system restoration approach in distributed smart grid","authors":"W. Khamphanchai, Songkran Pisanupoj, W. Ongsakul, M. Pipattanasomporn","doi":"10.1109/ICUEPES.2011.6497754","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497754","url":null,"abstract":"The objective of this paper is to design, develop and implement a multi-agent system (MAS) that provides intelligent and enables real-time management to a smart grid located at a distribution level (so called distributed smart grid). The MAS application development is discussed concerning suitable agent development framework, agent specification, agent architecture, and implementation of MAS. The paper illustrates MAS application in power systems. As faults and outages are inevitable and likely to occur in distribution systems, an efficient and fast switching operation scheme is required to detect the fault location, isolate the fault, and restore power to de-energized areas. The system under study consists of both physical (microgrid) and cyber elements (MAS). Finally, the simulation result indicates that the developed MAS for power system restoration applications can provide an effective and timely solution to manage microgrid given the existence of fault in the system.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126093122","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":"Patented twintex® hybrid PV/T collector: Level of performances and comparison with thermal solar collector","authors":"C. Cristofari, J. Canaletti, G. Notton","doi":"10.1109/ICUEPES.2011.6497769","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497769","url":null,"abstract":"In the context of climate change in the world at the global level, various actions are taken for the development of Renewable Energy and particularly solar energy. Many technology solutions have been proposed such as solar hybrid collector whose objectives is to improve the PV panels performance by recovering heat looses with the heat removal fluid. The objectives of this article is to propose a hybrid photovoltaic-thermal collector manufactured in a polymer material twintex® patented by Saint-Gobin company, to have product lighter, cheaper and easier to handle. We expose the performance of this PV-T collector manufactured without air layer.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121989738","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":"Operational experience of the polygeneration plant in Parc de l'Alba (Spain): Start-up and first results","authors":"J. Ortiga, J. Bruno, A. Coronas","doi":"10.1109/ICUEPES.2011.6497757","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497757","url":null,"abstract":"Polygeneration systems are highly integrated systems characterized by the simultaneous production of different services (electricity, heating, cooling) by means of several technologies to obtain a higher efficiency than that of an equivalent conventional system. This paper presents some preliminary monitoring results of a polygeneration plant installed in a technological park in Cerdanyola del Vallès (Spain) in the framework of the Polycity project of the European Concerto Program. The plant is composed of three cogeneration gas engines, a direct fired exhaust gas absorption chiller, a single-effect absorption chiller, a compression chiller, a natural gas boiler and a chilled water storage tank of 4000 m3.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128405469","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":"Allocation planning tool for determining the optimal location and sizing of distributed generations in provincial electricity authority of Thailand","authors":"P. Saraisuwan, P. Jirapong, A. Kalankul, S. Premrudeepreechacharn","doi":"10.1109/ICUEPES.2011.6497709","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497709","url":null,"abstract":"Distributed generations (DG) can be used to enhance power generation systems and improve distribution system efficiency. However, the installation of DG units at non-appropriate location and sizing can result in negative impacts such as an increasing in power losses and violations of system constraints. In this paper, a new DG allocation planning tool is developed for determining the optimal location and sizing of DG in practical distribution systems. The proposed planning tool is developed by writing DIgSILENT Programming Language (DPL) script in DIgSILENT PowerFactory software. The optimally placed optimal power flow (OPF) with DG is formulated as a minimization of energy losses function and a maximization of benefit to cost ratio, subjected to system constraints including real and reactive power generation, line and transformer loading, voltage profile, step voltage change, reverse power, energy losses, short circuit level, and DG operating limits. All possible locations and sizes of DG installations are evaluated and then the optimal solution is selected from the best objective function value obtained. Test results on the practical 9-bus and 437-bus distribution systems taken from Provincial Electricity Authority (PEA) of Thailand indicate that the proposed planning tool can be used to determine the optimal DG allocation without violation of system constraints.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114801269","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":"Using a PSCAD simulation software in calculating the probability of surge protective devices failure in an installation served by overhead lines","authors":"I. Hamzah, A. Q. Ramli","doi":"10.1109/ICUEPES.2011.6497707","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497707","url":null,"abstract":"Surge protective devices (SPDs) are used in protecting low voltage distribution networks against lightning strike. Lightning strike not only produces overvoltage but also comes with discharge current. Even if the voltage is clamped by the SPD, the discharge current from the lightning strike may cause SPD to fail. Normally, people look at clamping voltage (voltage protection level) without looking properly at the maximum allowable energy of SPD. This paper looks in the SPDs failure on the low voltage installation which been served by overhead lines. In this paper, the work is done in order to calculate the probability of SPDs failure based on the actual lightning data in Malaysia. The peak current is a probability phenomenon. By looking at the probability of lightning peak current and location of those lightning activities, it is possible to calculate the kind of induced voltage to appear on the electrical installation. From the calculated results, a better selection of SPD size to be installed can be assured.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117280330","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":"Optimal placement of UPFC for maximizing system loadability and minimize active power losses by NSGA-II","authors":"I. M. Wartana, J. G. Singh, W. Ongsakul, K. Buayai, S. Sreedharan","doi":"10.1109/ICUEPES.2011.6497710","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497710","url":null,"abstract":"This paper presented application of a new variant of Genetic Algorithm, specialized in multi-objective optimizations problem known as Non-dominated Sorting Genetic Algorithm II (NSGA-II), to obtain the optimal allocation of Unified Power Flow Controller (UPFC) for enhancing the power system loadability as well as minimizing the active power loss in transmission line. An Optimal Power Flow (OPF) problem with mixed integer programming has been formulated for optimizing the above two objectives as well as obtaining the optimal location of the UPFC while maintaining the system security and stability margins, e.g., small signal stability, voltage stability index, and line stability factor. In addition, a fuzzy based mechanism has been employed to extract the best compromise solution from the Pareto front. The effectiveness of the proposed methodology has been investigated on a standard IEEE 30-bus and practical Java-Bali 24-bus of Indonesian systems. Results demonstrate that the static and dynamic performances of the power system can be effectively enhanced by the optimal allocation of the UPFC. Moreover, UPFC installation cost is also calculated and overall performance has been compared with existing method.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131282575","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":"Assessment of energy security and low carbon society scenarios in Thailand and Sri Lanka","authors":"S. Selvakkumaran, B. Limmeechokchai","doi":"10.1109/ICUEPES.2011.6497738","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497738","url":null,"abstract":"The term energy security has permeated itself into the energy landscape rapidly in the last decade due to the imminent threat of scarcity of conventional energy supply. Low carbon society (LCS) planning has become the key phrase in the fight to mitigate climate change. This paper attempts to analyse the effect of the reduction of CO2 emissions from the power sector on the energy security of Thailand and Sri Lanka. Both countries have been modeled using a bottom-up integer programming based optimization model called “Model for Energy Supply Strategy Alternatives and their General Environmental Impacts” (MESSAGE). Thailand and Sri Lanka have been modeled as individual single region case studies with five scenarios each, with mitigation of CO2 emissions from the power sector modeled with the reduction of 10%, 20%, 30% and 40% in comparison to the Reference scenario. In this paper, energy security is measured using three main themes; namely oil security, gas security and sustainability. Results of the assessment indicate that whilst oil security and gas security are not significantly affected by the low carbon policies implemented, sustainability of the energy sector is improved for the case of Thailand, while the same scenarios have significant beneficial impacts on both the themes of oil security and sustainability for the case of Sri Lanka.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127621673","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":"Integrated renewable energy solutions for aquaculture processing; ENERFISH","authors":"H. Ronde, A. Ranne, E. Peirano, I. Byrne, H. L. Duc","doi":"10.1109/ICUEPES.2011.6497729","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497729","url":null,"abstract":"The European Union Framework Programme 7ENERFISH project (www.enerfish.eu) aims to demonstrate a new poly-generation application with renewable energy sources for the fishery industry in Vietnam. From the energy viewpoint, the fish processing plant can be made energy self-sufficient, when the fish waste oil is processed in a biodiesel processor and further converted to electricity and heat in a CHP unit. The ENERFISH advanced CO2 based freezing/cooling system requires optimization and control system planning of special high-pressure equipments. The high-efficiency cooling system can be tuned to be up to 14 % more efficient than conventional systems. The economical optimization model shows that in the Vietnamese demonstration case the electricity production is, due to the low electricity tariff, uneconomical (except during electricity blackout), even if cogeneration heat can be utilized. This prompted a design of the plant (in this particular demontration case) whereby the necessary heat for the biodiesel process is taken from the waste heat produced by the compressors of the CO2 cooling system. According to the calculations and assumptions presented in this article, the profitability of biodiesel production from fish cleaning wastes in Vietnam depends strongly on the market prices for fish waste and fish oil. Different business case scenarios are being described.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124287482","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":"CO2 mitigation in Thailand's Nationally Appropriate Mitigation Actions (NAMAs): Policy analyses of power generation","authors":"N. Sritong, A. Pattanapongchai, P. Winyuchakrit, P. Peerapong, B. Limmeechokchai","doi":"10.1109/ICUEPES.2011.6497733","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497733","url":null,"abstract":"This paper presents the potential of renewable power generation in Thailand for CO2 mitigation under the framework of Nationally Appropriate Mitigation Actions (NAMAs). This study employed AIM/Enduse model of the National Institute for Environmental Studies (NIES) Japan for analyses of CO2 mitigation in the power sector. Results show that in the business-as-usual scenario CO2 emissions in the power sector will be 141.51 kt-CO2 in 2020. When the renewable energy sources under Thailand's renewable energy development plan and low-carbon options were pushed into NAMAs, CO2 emissions in 2020 will be decreased by 27.41 kt-CO2, and reduction will be 17.20 kt-CO2 with renewable power generation by adders. When both policy measures of adders and low-carbon options are considered, CO2 emissions will decrease to 98.17 kt-CO2. Thus, this CO2 mitigation of 30.6% in 2020 in power generation needs strong efforts from Thai government and international supports to achieve climate change mitigation under NAMAs mechanism.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125041395","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}