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

{"title":"Performance of a quarter-pitch twisted Savonius turbine","authors":"M. Hassan, N. Khan","doi":"10.1109/ICUEPES.2011.6497756","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497756","url":null,"abstract":"The paper presents Computational Fluid Dynamics analysis of a quarter pitch twisted Savonius turbine. The turbine has been simulated using a CFD software package Flow 3D developed by Flow science. The simulation has been done using Reynold's Averaged Navier-Stokes Equations (RANSE) solver with structured rectangular mesh. The proposed rotor consists of no central shaft and has an overlap ratio of 0.35 with two end plates. Turbine rotates around z axis in the reference plane with six degree of freedom. The turbine is simulated for a constant current speed and a set of variable torques. The simulation result shows that the turbine can achieve more than 7% efficiency and can be used as a marine current turbine.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"128 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":"123464633","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":"An experimental investigation of the real time electrical characteristics of a PV panel for different atmospheric conditions in Islamic University of Technology (OIC), Gazipur, Bangladesh","authors":"A. A. Mansur, S. M. Ferdous, Z. Shams, M. R. Islam, M. Rokonuzzaman, M. Hoque","doi":"10.1109/ICUEPES.2011.6497767","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497767","url":null,"abstract":"The electrical characteristics of a 60W, 12V PV panel is presented on this paper for geographical location of Latitude = 23° 43'N and Longitude = 90°25'E (Islamic University of Technology, Gazipur, Dhaka, Bangladesh). The open circuit voltage and short circuit current of the panel are measured and recorded at an interval of three minutes along with the total solar irradiation. The total solar irradiation is measured using the device “UNIKLIMA VARIO” commissioned in the automatic weather monitoring station of the university. Based on the weekly data voltage-times and current-time curves are plotted for three different seasons from which the total available electrical power curve is also derived. Then the electrical efficiency of the panel is calculated using the solar irradiation data. The objective is to observe the variation of efficiency for different weather and atmospheric condition. The voltage generated by a PV panel depends on the geographical location of the site, time of the year, time of the day and local weather condition. The geographical and climatic condition of the chosen site is suitable for PV power systems. The electrical design of the array is influenced by the factors such as- sun intensity, sun angle, load matching for maximum power and operating temperature of the panel. Based on the experiments it has been observed that with increased radiation, the panel current is increased linearly. With a constant irradiation, the output voltage of the panel is increased for a decrease in the panel temperature or vice-versa. Finally the efficiency curve for the three different seasons is plotted and according to the observed data a comparison is carried on based on different factors affecting the efficiency of the panel. The total energy output in kWh is also calculated using the power curve of the panel for three different seasonal variations.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"79 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":"121163839","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 line faults detection, classification and location using artificial neural network","authors":"E. B. M. Tayeb, O. A. A. A. Rhim","doi":"10.1109/ICUEPES.2011.6497761","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497761","url":null,"abstract":"Transmission lines, among the other electrical power system components, suffer from unexpected failures due to various random causes. These failures interrupt the reliability of the operation of the power system. When unpredicted faults occur protective systems are required to prevent the propagation of these faults and safeguard the system against the abnormal operation resulting from them. The functions of these protective systems are to detect and classify faults as well as to determine the location of the faulty line as in the voltage and/or current line magnitudes. Then after the protective relay sends a trip signal to a circuit breaker(s) in order to disconnect (isolate) the faulty line.The features of neural networks, such as their ability to learn, generalize and parallel processing, among others, have made their applications for many systems ideal. The use of neural networks as pattern classifiers is among their most common and powerful applications. This paper presents the use of back-propagation (BP) neural network architecture as an alternative method for fault detection, classification and isolation in a transmission line system. The main goal is the implementation of complete scheme for distance protection of a transmission line system. In order to perform this, the distance protection task is subdivided into different neural networks for fault detection, fault identification (classification) as well as fault location in different zones. Three common faults were discussed; single phase to ground faults, double phase faults and double phase to ground faults. The result provides a reliable and an attractive alternative approach for the development of a protection relaying system for the power transmission systems.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"71 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":"124822600","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":"Optimization of distribution transformers maintenance using the ranking method","authors":"M. Honarmand, M. Haghifam, H. D. Barhagh, R. P. Noveiri","doi":"10.1109/ICUEPES.2011.6497708","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497708","url":null,"abstract":"Considering the importance of distribution network transformers, their maintenance always have been of important issues in electrical power industry, as well as transformers performance in different levels has an effective and key role in maintaining stability and promoting the distribution network reliability. But several factors, such as incorrect operation, lack of survey and on timely review led to the creation of critical conditions for transformers. This critical conditions, in addition to leading to transformers life reduction or increasing repair costs, can sometimes led them failure of transformers and also consequently increasing distribution network interruption and energy not served.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"3 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":"127651040","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":"Development of distributed generation assessment tool considering multi-system constraints for evaluating initial grid connection","authors":"A. Kalankul, P. Jirapong, P. Saraisuwan, S. Premrudeepreechacharn","doi":"10.1109/ICUEPES.2011.6497751","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497751","url":null,"abstract":"Assessment of distributed generation (DG) is a complicated task and it is a primary importance step in designing and planning of DG installation in distribution systems. The installation of DG units at non-appropriate location and sizing can result in an increasing in power losses and violations of system constraints. In this paper, a new DG assessment tool is developed for studying and evaluating DG installations in practical distribution systems. The assessment tool is developed by writing DIgSILENT Programming Language (DPL) script in DIgSILENT PowerFactory software. The tool is used for evaluating initial grid connection of DG, considering multi-system constraints-i.e. types of DG units, location, sizing, system loading, reverse power, voltage regulation, step voltage change, short circuit level, and energy losses. Two practical distribution systems including 9-bus system and 410-bus system from Provincial Electricity Authority (PEA) of Thailand are used as case studies. Test results show that the proposed assessment tool which relies on PEA regulation of DG connection can be used to evaluate the specified DG installation.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"130 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":"127913434","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":"Grape stalk briquettes as a alternative feedstock of Biomass Gasifiers","authors":"D. Pangavhane","doi":"10.1109/ICUEPES.2011.6497722","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497722","url":null,"abstract":"The Biomass Gasifiers are used for sustainable development by using the agricultural waste as a feedstock. Grape stalk are the major agricultural by-products available from the grapes garden. Hence thousands tons of grape stalk are available as agricultural waste, which can be used as feedstock to the Biomass Gasifiers. But the grape stalks cannot be used directly because of their low energy value. So these grape stalks are to be converted into some other suitable form of fuel which has comparable high energy value. This suitable form may be the briquettes from grape stalk. This paper reports the development of a low-density biomass gasification system (92.048 MJ/hr) for direct thermal applications. Initially, ultimate & proximate analysis of grape stalk is carried out in order to determine the calorific value of stalk. Analysis was done to determine its Gross Calorific Value. The system was tested under laboratory conditions and the Gross Calorific Value of the gas produced was within the range 5-6MJ/Nm3. The GCV of briquette was found to be greater than that of grape stalks. Gasification output capacity, especially in the high output ranges, was controlled only by availability of adequate feed materials rather than other technical consideration.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"46 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132365305","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 Thailand's energy policies on energy security","authors":"S. Selvakkumaran, B. Limmeechokchai","doi":"10.1109/ICUEPES.2011.6497739","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497739","url":null,"abstract":"In current times, energy is of vital importance to ensure the economic and social development of countries. In this regard, energy security is an important aspect of the energy sector. This paper analyses the benefits and costs which accrue for various policy options for the Thai power sector. The policies which are considered in this paper include i) low carbon society (LCS), ii) introduction of nuclear power plants, iii) integrated resource planning (IRP) and iv) combination of these measures. The case study of Thailand has been modeled using a bottom-up integer programming based optimization model called “Model for Energy Supply Strategy Alternatives and their General Environmental Impacts” (MESSAGE). In this study, Thailand has been modeled as a single region with seven scenarios including the Reference scenario. Energy security has been assessed along the themes of oil security, gas security, and sustainability. Results show that in terms of cost savings and improving energy security along the theme of sustainability the LCS and Combined scenarios are the most effective measures. Another important result is that none of the policy measures have significant impacts on oil security in Thailand.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"6 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":"127979331","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":"Biogas as an option for a low carbon campus: A case study at AIT","authors":"W. Thammachataree, P. Abdul Salam","doi":"10.1109/ICUEPES.2011.6497737","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497737","url":null,"abstract":"This study investigates the feasibility of generating biogas from the food wastes available at the Asian Institute of Technology (AIT) and substituting the LPG consumption in the campus with the biogas. The study shows that current amount of food waste has the potential to produce about 85-123 m3 per day of biogas. After analyzing existing small scale biogas plants in Thailand, three digester designs, i.e. wet digestion one stage, wet digestion two stages and dry digestion, have been shortlisted and further analyzed. Assuming that about 60% of the food waste could be collected, i.e. 800kg/day, and used in the digesters, the wet digester with one stage reactor is identified as the most attractive with a payback period of 7 years. The net GHG mitigation is estimated to be 718 tCO2e/year. CDM implementation is not feasible because its expected financial gain is lower than its investment cost.","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":"121061310","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":"Effect of aqueous denatured spirit on engine performance and exhaust emissions","authors":"P. Hubballi, T. A. Ashok Babu","doi":"10.1109/ICUEPES.2011.6497775","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497775","url":null,"abstract":"The experimental analysis was to investigate the effect of Denatured spirit (DNS) and DNS-Water blends as fuels in a four cylinder four stroke SI engine. Performance tests were conducted to study brake thermal efficiency (BThE), brake power (BP), engine torque (T) and brake specific fuel consumption (BSFC). Exhaust emissions were also investigated for carbon monoxide (CO), hydrocarbons (HC), oxides of nitrogen (NOx) and carbon dioxide (CO2). The results of the experiments reveled that, both DNS and DNS95W5 as fuels increase BThE, BP, engine torque and BSFC. The CO, HC, NOx and CO2 emissions in the exhaust decreased. The DNS and DNS95W5 as fuels produced the encouraging results in engine performance and mitigated engine exhaust emissions.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"69 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":"127012313","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":"Performance analysis and tuning of FACTS controllers in tandem with PSS in a power system network","authors":"A. Srivastava, S. Dawnee","doi":"10.1109/ICUEPES.2011.6497725","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497725","url":null,"abstract":"Power System Stability and Control has been and continues to be a major concern in the planning, design and operation of modern power systems. The selective use of FACTS controllers, as per the need, alleviates majority of the stability problems and also helps to enhance the grid reliability. FACTS controllers and PSS are generally connected together in modern power systems as they help in damping out the system oscillations, thereby improving the stability of the system. However, if there is no proper coordination between the FACTS controllers and PSS, there may be deleterious interactions between the two. This paper gives a new approach for proper control coordination between the FACTS controllers and PSS, so that the overall stability of the system is improved. For the design purpose, the model of power system considered was the single machine infinite bus (SMIB) system. A comparative study of the performance analysis of STATCOM with PSS and SVC with PSS in the same SMIB system was analyzed. Initially the controllers were independently tuned and then the individually tuned controllers were connected in the system and simultaneously coordinated for improving the stability. The simulations and analysis were carried out using the PSCAD/EMTDC software package. The simulation results show how the effective coordination between the FACTS controller and PSS improved the stability of the system. Also STATCOM gives better performance than SVC when coordinated with PSS.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"25 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":"123942747","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}