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Investigation of HIL interfaces in nonlinear load studies 非线性荷载研究中HIL界面的研究
2012 North American Power Symposium (NAPS) Pub Date : 2012-10-22 DOI: 10.1109/NAPS.2012.6336360
S. Paran, C. Edrington, B. Vural
{"title":"Investigation of HIL interfaces in nonlinear load studies","authors":"S. Paran, C. Edrington, B. Vural","doi":"10.1109/NAPS.2012.6336360","DOIUrl":"https://doi.org/10.1109/NAPS.2012.6336360","url":null,"abstract":"We report on the power hardware in the loop (PHIL) interfaces with respect to a nonlinear load. The stability criteria can be affected by systems which contain highly nonlinear loads thus this paper looks into the behavior of such a system. For the power interface of the HIL, five different methods are used and the buck converter is considered as the nonlinear load which serves as the hardware under test (HUT). Two important characteristics of the PHIL are stability and accuracy which are tested on the system. In this paper four configurations are discussed for the buck converter as the HUT which results in different stability and accuracy of the output voltage. The output voltage errors of the five methods are compared in this paper. All of the analysis is done with Matlab/Simulink.","PeriodicalId":216265,"journal":{"name":"2012 North American Power Symposium (NAPS)","volume":"348 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115984215","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: 18
Analyzing techniques for increasing power transfer in the electric grid 增加电网电力传输的分析技术
2012 North American Power Symposium (NAPS) Pub Date : 2012-10-22 DOI: 10.1109/NAPS.2012.6336377
Kushal S. Dave, Nihal Mohan, Xianda Deng, Ravi Gorur, Robert Olsen
{"title":"Analyzing techniques for increasing power transfer in the electric grid","authors":"Kushal S. Dave, Nihal Mohan, Xianda Deng, Ravi Gorur, Robert Olsen","doi":"10.1109/NAPS.2012.6336377","DOIUrl":"https://doi.org/10.1109/NAPS.2012.6336377","url":null,"abstract":"This paper explores various options for increasing power transfer in the electric grid, such as compact transmission lines, high phase order (6 phase) system and use of high temperature low sag (HTLS) conductors. These methods were selected as they could be readily employed without the need for additional right-of-way. Changes in the electric and magnetic field, fault current due to the new methods employed have been calculated and compared with a traditional 3 phase single and double circuit lines. It has been shown that the increase in power transfer ranges from 17-53% when compared with traditional line configurations.","PeriodicalId":216265,"journal":{"name":"2012 North American Power Symposium (NAPS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116542026","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: 15
Implementation of a microgrid central controller in a laboratory microgrid network 微电网中央控制器在实验室微电网中的实现
2012 North American Power Symposium (NAPS) Pub Date : 2012-10-22 DOI: 10.1109/NAPS.2012.6336332
Md. Rasheduzzaman, S. Bhaskara, Badrul H. Chowdhury
{"title":"Implementation of a microgrid central controller in a laboratory microgrid network","authors":"Md. Rasheduzzaman, S. Bhaskara, Badrul H. Chowdhury","doi":"10.1109/NAPS.2012.6336332","DOIUrl":"https://doi.org/10.1109/NAPS.2012.6336332","url":null,"abstract":"When distributed generation (DG) units operate in a microgrid environment, there is a need for coordinated operation between the DGs, the utility grid and the loads. A Microgrid Central Controller (MGCC) can keep track of the status from the systemic point of view and command the local microsource controllers (MC) to ensure system stability. In various modes of operation, vis-à-vis grid-connected, islanded and during transition from grid-connected to islanded mode and vice versa, the MGCC can support the MCs by feeding the necessary information to contribute towards stable system operation. This paper discusses the implementation of the MGCC for a laboratory test system.","PeriodicalId":216265,"journal":{"name":"2012 North American Power Symposium (NAPS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122364756","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: 31
A low cost portable parabolic solar concentrator for combined heat and power 一种低成本便携式抛物面太阳能聚光器，用于热电联产
2012 North American Power Symposium (NAPS) Pub Date : 2012-10-22 DOI: 10.1109/NAPS.2012.6336420
S. Leonard, D. Dolan, K. Zombro, F. Reiling, T. Taufik
{"title":"A low cost portable parabolic solar concentrator for combined heat and power","authors":"S. Leonard, D. Dolan, K. Zombro, F. Reiling, T. Taufik","doi":"10.1109/NAPS.2012.6336420","DOIUrl":"https://doi.org/10.1109/NAPS.2012.6336420","url":null,"abstract":"This paper details the development of a portable parabolic solar concentrator system. The prototype is designed to be able to provide high quality heat or steam using a mobile, self contained system. A UV stable thermoplastic mirror is coupled with a lightweight parabolic frame and a vacuum insulated heat collection pipe. The system features a novel heliostat design, allowing simple collector scalability to virtually any size. A 1.5 square meter mirror was prototyped and tested to compare the design's performance with traditional stationary parabolic solar concentrators. The durability, cost, and set-up procedure for the system is also commented upon. In addition, this paper describes the possible applications of the system including desalination, power generation, and industrial heat supply.","PeriodicalId":216265,"journal":{"name":"2012 North American Power Symposium (NAPS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122393405","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: 3
Short term energy consumption prediction using bio-inspired fuzzy systems 基于仿生模糊系统的短期能源消耗预测
2012 North American Power Symposium (NAPS) Pub Date : 2012-10-22 DOI: 10.1109/NAPS.2012.6336358
C. Adika, Lingfeng Wang
{"title":"Short term energy consumption prediction using bio-inspired fuzzy systems","authors":"C. Adika, Lingfeng Wang","doi":"10.1109/NAPS.2012.6336358","DOIUrl":"https://doi.org/10.1109/NAPS.2012.6336358","url":null,"abstract":"This paper presents a new particle swarm optimization based fuzzy inference approach to implement short term load forecasting (STLF). Fuzzy logic algorithm is widely employed for modeling highly nonlinear systems and for handling uncertainties of current control systems. However, conventional fuzzy logic systems are incapable of handling complex problems with many input variables because of fixed rule sets and fixed membership function (MF) parameters. This work therefore presents a model-based technique to optimize the fuzzy system's membership functions using particle swarm optimization (PSO) algorithm. The PSO scheme is used for identification of fuzzy models from the input-output data. The results obtained demonstrate that the developed model has better prediction capabilities than a conventional fuzzy model for the same system with heuristically defined MFs. This therefore suggests the proposed method is an effective technique for short-term load forecasting.","PeriodicalId":216265,"journal":{"name":"2012 North American Power Symposium (NAPS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124201505","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: 14
A rule engine based classification algorithm for detection of illegal consumption of electricity 一种基于规则引擎的违规用电检测分类算法
2012 North American Power Symposium (NAPS) Pub Date : 2012-10-22 DOI: 10.1109/NAPS.2012.6336359
S. Depuru, Lingfeng Wang, V. Devabhaktuni
{"title":"A rule engine based classification algorithm for detection of illegal consumption of electricity","authors":"S. Depuru, Lingfeng Wang, V. Devabhaktuni","doi":"10.1109/NAPS.2012.6336359","DOIUrl":"https://doi.org/10.1109/NAPS.2012.6336359","url":null,"abstract":"Total losses in transmission and distribution (T&D) of electricity includes nontechnical losses (NTL). Illegal consumption of electricity constitutes a major portion of NTL. NTL affects good interests of utility companies and its customers. In this context, importance of customer load profile evaluation for detection of illegal consumers has been explained. In this paper, an encoding technique has been implemented to reduce the number of data points to be evaluated by the rule engine. In addition, rule engine algorithm has been proposed and implemented to classify customers based on their energy consumption. This paper presents synopsis of those rules, and elucidates the overall encoding and classification procedure. From the obtained results, it is evident that the rule engine yielded appreciable classification accuracy in significantly less CPU time. Results demonstrate the robustness and accuracy of this procedure in identifying illegal consumers.","PeriodicalId":216265,"journal":{"name":"2012 North American Power Symposium (NAPS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121473823","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
Impact of assumptions on DC power flow model accuracy 假设对直流潮流模型精度的影响
2012 North American Power Symposium (NAPS) Pub Date : 2012-10-22 DOI: 10.1109/NAPS.2012.6336395
Y. Qi, Di Shi, D. Tylavsky
{"title":"Impact of assumptions on DC power flow model accuracy","authors":"Y. Qi, Di Shi, D. Tylavsky","doi":"10.1109/NAPS.2012.6336395","DOIUrl":"https://doi.org/10.1109/NAPS.2012.6336395","url":null,"abstract":"The industry seems to be sanguine about the performance of dc power-flow models, but recent research has shown that the performance of different formulations is highly variable. Considering their pervasive use, the accuracy of dc power-flow models is of great concern. In this paper, three dc power-flow formulations are examined: the classical dc power-flow model, dc power-flow model with loss compensation and the so-called a-matching dc power-flow model. These three models are tested in three systems of different sizes, ranging from 10 buses to 62,000 buses. By comparing the dc power-flow results with the ac power-flow results, the paper concludes that the a-matching formulation has the highest accuracy among three dc power flow formulations.","PeriodicalId":216265,"journal":{"name":"2012 North American Power Symposium (NAPS)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128106448","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: 30
Basic design and cost optimization of a hybrid power system for rural communities in Afghanistan 阿富汗农村混合动力系统的基本设计和成本优化
2012 North American Power Symposium (NAPS) Pub Date : 2012-10-22 DOI: 10.1109/NAPS.2012.6336333
M. Sadiqi, A. Pahwa, R. Miller
{"title":"Basic design and cost optimization of a hybrid power system for rural communities in Afghanistan","authors":"M. Sadiqi, A. Pahwa, R. Miller","doi":"10.1109/NAPS.2012.6336333","DOIUrl":"https://doi.org/10.1109/NAPS.2012.6336333","url":null,"abstract":"Afghanistan is a mountainous country with a significant amount of snow during the winter and once it melts the water runs into rivers, lakes and streams. Therefore it does not face any shortage of running water during the year. Also, Afghanistan has plentiful wind and solar energy potential. Therefore, small hydro-power, wind turbines and solar energy are attractive renewable energy sources for remote communities. The development of such a hybrid power system is a complex process. This paper will give an insight into design, cost-effectiveness and feasibility of a hybrid power system using Hybrid Optimization Model for Electric Renewable (HOMER) with two different scenarios in order to encourage private investors and local community people to take advantage of this potential available in Afghanistan and ensure sustainability of investments in micro-hydro power, wind and solar.","PeriodicalId":216265,"journal":{"name":"2012 North American Power Symposium (NAPS)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127966831","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: 23
Application of PHEV in load frequency problem of a hybrid microgrid 插电式混合动力在混合微电网负荷频率问题中的应用
2012 North American Power Symposium (NAPS) Pub Date : 2012-10-22 DOI: 10.1109/NAPS.2012.6336403
H. Keshtkar, J. Solanki, S. K. Solanki
{"title":"Application of PHEV in load frequency problem of a hybrid microgrid","authors":"H. Keshtkar, J. Solanki, S. K. Solanki","doi":"10.1109/NAPS.2012.6336403","DOIUrl":"https://doi.org/10.1109/NAPS.2012.6336403","url":null,"abstract":"Microgrids are low voltage distribution networks comprising distributed generations (DGs), storage devices, Plug-In Hybrid Electric Vehicles (PHEVs) and responsive loads that can operate either interconnected to the main grid or in an island mode. With the large penetration of distributed generation like Wind and large load variations there are issues of frequency stability of the microgrid. This paper develops load frequency control for a microgrid system with significant wind penetration and PHEVs. Particle swarm optimization is used to determine control parameters. Case studies are presented to demonstrate the effectiveness of the controller and examine the role of PHEVs in frequency stabilization.","PeriodicalId":216265,"journal":{"name":"2012 North American Power Symposium (NAPS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130195582","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: 16
Impacts of load levels and topology errors on WLS state estimation convergence 负载水平和拓扑误差对WLS状态估计收敛性的影响
2012 North American Power Symposium (NAPS) Pub Date : 2012-10-22 DOI: 10.1109/NAPS.2012.6336329
Jiaxiong Chen, Y. Liao, B. Gou, K. Yocum
{"title":"Impacts of load levels and topology errors on WLS state estimation convergence","authors":"Jiaxiong Chen, Y. Liao, B. Gou, K. Yocum","doi":"10.1109/NAPS.2012.6336329","DOIUrl":"https://doi.org/10.1109/NAPS.2012.6336329","url":null,"abstract":"State estimation is important for real time power system monitoring and control. State estimation algorithms may suffer divergence under stressed system conditions. Understanding state estimation divergence characteristics is essential for designing more robust state estimation algorithm. This paper investigates impacts of variations of load levels and topology errors on the convergence property of the commonly used weighted least square (WLS) state estimator. The influence of topology errors on the condition number of the gain matrix in the state estimation is also analyzed. The effects of measurement standard deviations are studied. The IEEE 118-bus system is used as the test case and test results are reported.","PeriodicalId":216265,"journal":{"name":"2012 North American Power Symposium (NAPS)","volume":"317 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125778552","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: 7
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