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Nano-structured GaAs Solar Cell Design, Simulation and Analysis for Conversion Efficiency Improvement 纳米结构砷化镓太阳能电池的设计、仿真及转换效率提升分析
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757873
Shiyao Tan, N. Das, A. Helwig, S. Islam
{"title":"Nano-structured GaAs Solar Cell Design, Simulation and Analysis for Conversion Efficiency Improvement","authors":"Shiyao Tan, N. Das, A. Helwig, S. Islam","doi":"10.1109/AUPEC.2018.8757873","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757873","url":null,"abstract":"This paper discusses nano-structured GaAs solar cell design and analysis for conversion efficiency improvement by increasing the light transmission and absorption, reducing the light reflection. The focus of this research is to construct different type of nano-grating shaped GaAs solar cells with various nano-grating heights and pitches, to compare the simulation results and find a suitable nano-structure that can provide higher conversion efficiency. Finite difference time domain (FDTD) simulation tool is used to simulate and calculate the light reflection, transmission and absorption for different nano-grating shapes, such as, parabolic, triangular, trapezoidal and rectangular. Based on the simulation results, it has been confirmed that the light reflection of parabolic shaped nano-grating structures is higher than triangular nano-grating structures, but it is lower than rectangular and trapezoidal shaped nano-grating structures. Moreover, the simulation results confirmed that the light transmission of parabolic shaped nano-grating structures is about 62.3% having a 200-nm grating height and an 810-nm grating pitch, which is about 22% higher than the rectangular (i.e., flat) type substrates.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126669563","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
Current Harmonic Estimation Techniques based on Voltage Measurements in Distribution Networks 基于电压测量的配电网电流谐波估计技术
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757929
J. Yaghoobi, Abdulrahman Alduraibi, Firuz Zare
{"title":"Current Harmonic Estimation Techniques based on Voltage Measurements in Distribution Networks","authors":"J. Yaghoobi, Abdulrahman Alduraibi, Firuz Zare","doi":"10.1109/AUPEC.2018.8757929","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757929","url":null,"abstract":"Current harmonics generated by power electronic devices and other nonlinear loads have been a major concern in distribution systems due to quality and efficiency deterioration. To find effective solutions to reduce the level of these current harmonics, their magnitude and phase angle need to be first measured. Adding current sensors is not a practical solution at the system level due to cost and technical concerns. Consequently, a harmonic current estimation method based on only voltage measurement is proposed in this paper. The method can be used in smart power electronics systems to find optimum conditions for current harmonic compensations. Analytical calculations are presented for both single- and multi-unit systems followed by simulation results to confirm the validity of the proposed method.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134483359","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: 4
Revisiting the Effects of Supply Voltage Unbalance on the Losses of Three Phase Induction Motors 供电电压不平衡对三相异步电动机损耗影响的再探讨
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8758015
Pathum Sudasinghe, S. Perera, P. Commins, Jeff Moscorp, U. Jayatunga, Prasad Wadduwage
{"title":"Revisiting the Effects of Supply Voltage Unbalance on the Losses of Three Phase Induction Motors","authors":"Pathum Sudasinghe, S. Perera, P. Commins, Jeff Moscorp, U. Jayatunga, Prasad Wadduwage","doi":"10.1109/AUPEC.2018.8758015","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8758015","url":null,"abstract":"The impact of supply voltage unbalance (VU) on three-phase induction motors (IMs) is well known in terms of extra losses and associated derating to ensure that the motors do not prematurely fail. Theoretical studies, experimental results and standards exist in this regard. However, the approaches taken in the past are not seen be exhaustive now considering the modern tools such as Finite Element Modelling (FEM) software. Also, the relevant documentation available to-date on the subject does not cover the level of variability in the outcomes such as extra losses that can arise when an IM is subjected to the same level of VU that can be produced in a range of different ways. This paper emphasises the importance of Positive Sequence Voltage and the Complex Voltage Unbalance Factor (CVUF) in analysing the losses of a motor under different VU scenarios. Statistical analysis of the losses of three-phase IMs operating under different supply voltage unbalance scenarios is presented in this paper giving special focus to the behaviour of the core loss and copper loss. Two dimensional (2D) FEM is used to model the electromagnetics of the motor and Bertotti core loss model is used to evaluate the core losses. The outcomes of this analysis will be useful in the process of developing improved and cost effective mechanism of derating for mains connected three-phase IMs as well as in their design optimisation.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130034509","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
Lightning Location on 115-kV Transmission Line using Travelling Waves 115千伏输电线路行波闪电定位
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757987
S. Bunjongjit, A. Ngaopitakkul, M. Leelajindakrairerk
{"title":"Lightning Location on 115-kV Transmission Line using Travelling Waves","authors":"S. Bunjongjit, A. Ngaopitakkul, M. Leelajindakrairerk","doi":"10.1109/AUPEC.2018.8757987","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757987","url":null,"abstract":"A lightning strike can be very severe to the transmission system with high impulse current that can damage equipment and cause the operation of the system to be halted. However, currently used lightning location methodology that does not provide the desired accuracy. So, this paper proposed the lightning location methodology on the transmission line based on discrete wavelet transform (DWT) and travelling wave theory. The Alternative Transients Program/ Electromagnetic Transients Program (ATP/EMTP) software has been used to simulate the transmission system using in this research. The comparative study between proposed and currently used has been done in order to evaluate the performance in term of accuracy to detect the lightning location on the transmission line. The result has shown that the proposed methodology can be achieved desire accuracy and can be further implemented in actual transmission line protection system in the future.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"197 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133718489","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
Sensitivity of Hosting Capacity to Data Resolution and Uncertainty Modeling 承载能力对数据分辨率和不确定性建模的敏感性
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757980
Mohammad Seydali Seyf Abad, Jin Ma, Diwei Zhang, Ahmad Shabir Ahmadyar, H. Marzooghi
{"title":"Sensitivity of Hosting Capacity to Data Resolution and Uncertainty Modeling","authors":"Mohammad Seydali Seyf Abad, Jin Ma, Diwei Zhang, Ahmad Shabir Ahmadyar, H. Marzooghi","doi":"10.1109/AUPEC.2018.8757980","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757980","url":null,"abstract":"Integration limits of distributed generations (DGs) in distribution networks, i.e. the hosting capacity (HC), are highly dependent on uncertainties associated with the size, location and output power of DGs. Addressing these uncertainties to a great extent is reliant on the availability and resolution of the historical data. This paper investigates the effects of data resolution and uncertainty modeling on the HC calculation. To do so, a mathematical model of the HC problem is used in a Monte Carlo-based framework. Our analysis is carried out on an agricultural distribution network in Australia. It is shown that decreasing the resolution of historical data shifts the probability distribution function of the HC towards right implying an increase in the estimated HC. Further, it is illustrated that assuming a fixed capacity for DGs instead of proper modeling of the uncertainty associated with their size results in underestimation of the HC in the network.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121824628","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
Will Pumped-Hydro Energy Storage Business Models Work for Peak Shaving Use? 抽水蓄能商业模式是否适用于调峰使用?
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757879
A. Helwig, Akshay Sahay
{"title":"Will Pumped-Hydro Energy Storage Business Models Work for Peak Shaving Use?","authors":"A. Helwig, Akshay Sahay","doi":"10.1109/AUPEC.2018.8757879","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757879","url":null,"abstract":"The desire for improved environmental sustainability continues to reduce reliance on fossil carbon based energy usage, while increasing installation of renewable energy sources in Australia and in the Pacific region. Pumped hydro energy storage systems (PHESS) are a technology that can be used to improve network stability where high penetration of renewable energy sources exist. However current participation in the Australian Electricity Market by PHESS does not match international participation in other electricity markets. This paper reviews international CAPEX costs and cos oft recharge energy for PHESS to better understand its potential use in the Australia national energy market. Deep sea PHESS as a conceptual emerging technology is also compared. PHESS and DSPHESS modelling in Australia and Fiji are developed to assess the final cost of energy from these sources in relation to peak shaving application. Part of each model is a sensitivity study of final cost of electricity produced from PHESS systems based on CAPEX costs and recharge energy costs.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121436667","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: 1
Toward a Resilient Network by Optimal Sizing of Large Scale PV Power Plant in Microgrid-Case Study of Mongolia 微电网中大型光伏电站优化规模构建弹性电网——以蒙古为例
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757877
Sainbold Saranchimeg, M. Sanjari, N. Nair
{"title":"Toward a Resilient Network by Optimal Sizing of Large Scale PV Power Plant in Microgrid-Case Study of Mongolia","authors":"Sainbold Saranchimeg, M. Sanjari, N. Nair","doi":"10.1109/AUPEC.2018.8757877","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757877","url":null,"abstract":"Competitive price and eco-friendly operation features make solar photovoltaic (PV) plant a strong candidate for a modern power system’s generation mix. Therefore, it has been economically feasible to build PV based microgrids, which can convert current centralized national grids into decentralized segments so that resiliency of grid will improve and line loss will decrease. In this study, we examined integration scenarios of different size of PV plants into Altai Uliastai Energy System (AUES) of Mongolia in order to evaluate the possibility of developing microgrid using current hydropower plant (HPP) and proposed PV plant. Results showed that a PV plant with 10 MW capacity would perform well with HPP and load from energy management point of view. DIGSilent Power Factory has been used for quasi-dynamic simulation.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132703524","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: 1
Study of A Partial Discharge Location Technique for Power Cables Using High Frequency Current Transducer 基于高频电流传感器的电力电缆局部放电定位技术研究
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757931
B. Paophan, A. Kunakorn, P. Yutthagowith, S. Pumyoy
{"title":"Study of A Partial Discharge Location Technique for Power Cables Using High Frequency Current Transducer","authors":"B. Paophan, A. Kunakorn, P. Yutthagowith, S. Pumyoy","doi":"10.1109/AUPEC.2018.8757931","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757931","url":null,"abstract":"In this paper, a partial discharge location technique for power cables was studied. PD signals are measured by high frequency current transducer which has been experimentally verified and installed at the end one (near end) of cable. The standard PD pulse calibrator with the charge of 200 pC was used to investigate the PD location at various position along the cable with total length is 37.925 m. The PD location method, time domain reflectometry (TDR) is used to locate the PD defect along the cable, which essentially based on the f travelling wave theory. From the experimental results of PD location, the highest error of PD location by time domain reflectometry method is 0.859 % at PD defect point (x) of 21.41 m. From this experiment, the proposed technique can be applied to further practical application and research related to PD location.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132305187","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
Analysis of Lightning Generated Over-Voltages on Voltage Regulating Devices in Distribution System with Centralized Wind Turbine Generators 集中式风力发电机组配电系统稳压装置雷电过电压分析
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8758017
Raghavender D. Goud, R. Rayudu, C. Moore, M. Emmanuel
{"title":"Analysis of Lightning Generated Over-Voltages on Voltage Regulating Devices in Distribution System with Centralized Wind Turbine Generators","authors":"Raghavender D. Goud, R. Rayudu, C. Moore, M. Emmanuel","doi":"10.1109/AUPEC.2018.8758017","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8758017","url":null,"abstract":"The effect of global warming is expected to increase the number of lightning strikes with the capacity to alter the operations of power lines and voltage regulating devices. This problem is exacerbated by the rapid proliferation of wind power generation in the distribution system, which increases the propagation of lightning strikes in the network. This paper presents the impact of lightning generated over-voltages on voltage regulating devices of the IEEE-34 feeder with utility-interactive centralized wind turbine generators (WTGs). Three deployment scenarios are considered: centralized WTG close to the feeder source, midpoint and end. Results show the occurrence of over-voltages and high fluctuations across the voltage regulators and fixed capacitors regardless of where the WTG is deployed. However, the WTG deployed closest to the feeder end resulted in higher over-voltages and fluctuations than the other two scenarios. This analysis is critical to network planners concerned about lightning protection and risk assessment.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131508836","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
The Internet of Things as a Facilitator of Smart Building Services 物联网作为智能建筑服务的推动者
2018 Australasian Universities Power Engineering Conference (AUPEC) Pub Date : 2018-11-01 DOI: 10.1109/AUPEC.2018.8757881
Daniel Gebbran, Archie C. Chapman, G. Verbič
{"title":"The Internet of Things as a Facilitator of Smart Building Services","authors":"Daniel Gebbran, Archie C. Chapman, G. Verbič","doi":"10.1109/AUPEC.2018.8757881","DOIUrl":"https://doi.org/10.1109/AUPEC.2018.8757881","url":null,"abstract":"To successfully perform the necessary migration towards a sustainable civilization, it is required we exploit both consolidated and emerging technologies. Within this context, the emerging smart grid has numerous components, and is closely intertwined with the concept of the internet of things (IoT). Both are necessary for the transition to a high renewable penetration electricity generation matrix, by making use of improved data acquisition and processing to optimize systems’ operations. In this work, we focus on energy use in buildings, as they are one of the biggest end energy usage sectors. In particular, we identify what energy resources are available within buildings, and what power system services they may provide, whilst exploring how IoT facilitates or enables each of these.","PeriodicalId":314530,"journal":{"name":"2018 Australasian Universities Power Engineering Conference (AUPEC)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127701445","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: 5
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