2015 50th International Universities Power Engineering Conference (UPEC)最新文献_第9页

A case study of using OLTC to mitigate overvoltage in a rural european low voltage network 使用OLTC缓解欧洲农村低压电网过电压的案例研究

2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339875

D. E. Mawarni, M. M. Ali, P. Nguyen, W. Kling, Marjan Jerele

引用次数: 17

Improving fault ride-through capability of DFIG based wind generators by using bridge-type superconducting fault current limiter 采用桥式超导故障限流器提高DFIG型风力发电机的故障通过能力

2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339856

M. Tarafdar Hagh, K. Muttaqi, D. Sutanto, M. A. Hossain, A. Haidar

引用次数: 8

Evaluation of lightning performance on transmission system sag 输电系统垂降的防雷性能评价

2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339860

Mohamed Qais, U. Khaled

引用次数: 2

Analyzing the impact of smart grids on load profiles using multiple regression 运用多元回归分析智能电网对负荷分布的影响

2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339951

E. Klaassen, J. Frunt, H. Slootweg

引用次数: 2

Renewable energy resource self-intervention control technique using Simulink/Stateflow modeling 利用Simulink/ statflow建模的可再生能源自我干预控制技术

2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339803

R. Singh, M. Abbod, W. Balachandran

{"title":"Renewable energy resource self-intervention control technique using Simulink/Stateflow modeling","authors":"R. Singh, M. Abbod, W. Balachandran","doi":"10.1109/UPEC.2015.7339803","DOIUrl":"https://doi.org/10.1109/UPEC.2015.7339803","url":null,"abstract":"Hybrid Renewable Energy Complementary Systems are gaining popularity as electricity power generation system. The Hybrid Renewable Energy Complementary Systems introductory was to overcome the intermittency during the energy harvesting process. Therefore, solar photovoltaic and wind turbine generator has been seen as one of the most promising Hybrid Renewable Energy Complementary System to overcome the intermittency compare to a typical Hybrid Renewable Energy System. The integration of solar photovoltaic and wind turbine generator as Hybrid Renewable Energy Complementary System can play an important role to reduce the dependency on the fossil fuel for electricity power generation and are seen as a solution to improve the shortage of electricity due to increasing demand. Thus, the advantages of Hybrid Renewable Energy Complementary Systems have gained attention from many researchers around the world. Research to improve the complexity complementary system performance is necessary to achieve well design control and autonomous system operation and systematic energy management in the system. With that, this paper presents a new voltage-divider balancing switching technique to control the self-intervention switching for the Hybrid Renewable Energy Complementary System. The self-intervention control strategy of the Hybrid Renewable Energy Complementary System is coordinated using the Simulink/Stateflow process. The Simulink/Stateflow modelling performs under different preset conditions which are based on the analogue voltage reading from the input of the Hybrid Renewable Energy Complementary System resources. Simulation results demonstrate the validity of the proposed research to control the self-intervention of the Hybrid Renewable Energy Complementary System under the preset conditions.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123933593","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}

引用次数: 2

Stochastic methodology for service management modeling in electric power utilities 电力公司服务管理建模的随机方法

2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339827

Iochane Garcia Guimaraes, V. Garcia, Daniel Pinheiro Bernardon

引用次数: 0

Aspects of the animal fat use at the diesel engine fuelling 动物脂肪在柴油机加油方面的应用

2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339917

A. Cernat, C. Pană, Niculae Negurescu, G. Lăzăroiu, C. Nuțu

{"title":"Aspects of the animal fat use at the diesel engine fuelling","authors":"A. Cernat, C. Pană, Niculae Negurescu, G. Lăzăroiu, C. Nuțu","doi":"10.1109/UPEC.2015.7339917","DOIUrl":"https://doi.org/10.1109/UPEC.2015.7339917","url":null,"abstract":"The general objective of the research is analyzes of the preheated gas oil-animal fat blends use at the experimental diesel engine, type CFR- IT9-3M, adequate instrumentation. The engine was fuelled firstly with diesel fuel then with different diesel fuel-animal fats blends (5%, 10%, 15% animal fats content in mixture with diesel fuel). The main animal fat advantages - cetane number and calorific value close to diesel fuel, higher oxygen content it recommend a good alternative fuel for diesel engines. But, the high viscosity and poor vaporization characteristics of animal fats need prior their heating. The results of experimental investigations show the animal fats effects on auto ignition delay, on the combustion parameters and on the pollutants emissions level. Thus, at the animal fats content increase in mixture with diesel fuel, for same engine adjustments, were obtained the follow results: auto ignition delay increases with ~20%; maximum gas pressure decreases with 10%; gas temperature decreases with 8%; indicate efficiency decreases with 10%; NOx emissions level decreases with 30%; CO emission level increases with 28%; HC emissions level increases with 58%; CO2 emission level decreases with 3.5% and smoke emissions decreases with 65%. Was established the animal fats effects on the fuel auto ignition and combustion. Animal fats can be considered a good alternative fuel for diesel engine, assuring the replace of the fossil fuels and resolving the major problem of animal wastes.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127333813","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}

引用次数: 8

Power transformer health monitoring: A shift from off-line to on-line detection 电力变压器健康监测:从离线检测到在线检测的转变

2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339901

Ehnaish Aburaghiega, M. Emad Farrag, D. Hepburn, B. García

{"title":"Power transformer health monitoring: A shift from off-line to on-line detection","authors":"Ehnaish Aburaghiega, M. Emad Farrag, D. Hepburn, B. García","doi":"10.1109/UPEC.2015.7339901","DOIUrl":"https://doi.org/10.1109/UPEC.2015.7339901","url":null,"abstract":"Transformers are an important part of the electrical power system network, therefore, its fault detection is vital. Off-line methods are commonly used for their fault detection. These methods have associated costs derived from the necessity of taking the transformer out of service. The application of on-line methods reduces the expected costs and the possibility of unpredicted failures. In the present study, off-line and on-line methods are applied to the detection of short circuits in transformers, demonstrating the possibility of moving from off-line to on-line methods. Short circuits between sections in a transformer winding, between winding and core and between windings have been considered. PSPICE software is used to simulate the transformer for both detection methods. A comparison of the fault indication in both techniques proves the possibility of moving from off-line to on-line method. Sweep Frequency Response Analysis (SFRA) is considered an accurate technique for off-line tests. The changes in the windings inductance and capacitance affect the number of poles in the system response, so the number of poles will indicate the number of healthy sections. For on-line method, measurement of primary/secondary voltage/current is used to determine the measurable values which would result from a range of internal short circuit faults. From the simulated results, it is found that primary current can be used as the main indicator for the primary winding short circuits; a combination of secondary voltage and primary current is found to be useful for detecting secondary winding faults. Secondary winding voltage can be the main indicator for the cross windings short circuits.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"23 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125686601","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}

引用次数: 9

Wind Energy and Ireland: Could forecasting errors lead to a flawed market? 风能和爱尔兰:预测错误会导致市场缺陷吗?

2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.21427/D75R70

M. McDonald, T. Woolmington, K. Sunderland

{"title":"Wind Energy and Ireland: Could forecasting errors lead to a flawed market?","authors":"M. McDonald, T. Woolmington, K. Sunderland","doi":"10.21427/D75R70","DOIUrl":"https://doi.org/10.21427/D75R70","url":null,"abstract":"This paper explores wind energy forecasting consistency by considering the error benchmarks associated with the generation output of a small wind farm in comparison to the national forecasting as provided by Eirgrid, the Irish TSO. This percentage error analysis will contrast the predicted (Eirgrid) capacity and actual wind energy output observations (Wind farm) and postulations that consider alternative prediction metrics are discussed. The findings suggest that in monthly like for like comparisons over a twelve month period, total MWh percentage errors of -0.36% and 5.7% are observed respectively for the actual generation and the forecasted prediction, when a monthly averaged window is considered. However if one considers higher frequency observations, such as those available through Eirgrid (15 minute periods), a mean absolute error of 28.5% is evident for the national wind generation capacity over the course of the same year. In the context of the proposed Irish wholesale and integrated single electricity market (I-SEM), an error of this magnitude could have severe financial implications for the wind energy sector; particularly if wind is to become the primary component of the future Irish energy mix.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130533187","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}

引用次数: 0

Integration of Transmission Lines Dynamic Thermal rating into real-time Optimal dispatching of power systems 输电线路动态热额定与电力系统实时优化调度的集成

2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339943

M. Nick, O. Mousavi, R. Cherkaoui, M. Paolone

引用次数: 12