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A modified selective harmonic elimination method for fault-tolerant operation of multilevel cascaded H-bridge inverters 多电平级联h桥逆变器容错运行的一种改进的选择性谐波消除方法
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804558
M. Aleenejad, R. Ahmadi, Parvin Moamaei
{"title":"A modified selective harmonic elimination method for fault-tolerant operation of multilevel cascaded H-bridge inverters","authors":"M. Aleenejad, R. Ahmadi, Parvin Moamaei","doi":"10.1109/PECI.2014.6804558","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804558","url":null,"abstract":"This paper presents a novel switching strategy based on Selective Harmonic Elimination (SHE) for the fault-tolerant operation of multilevel cascaded H-bridge (CHB) inverters. In this paper, first the structure and operation of a 7-level CHB is reviewed and the general SHE concept for this type of inverter is studied briefly. Then, the proposed fault-tolerant switching strategy for a CHB with one faulty switch is presented. Finally, simulation results are provided to validate the proposed modulation technique.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133044215","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: 20
Low-cost solar simulator design for multi-junction solar cells in space applications 空间应用中多结太阳能电池的低成本太阳模拟器设计
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804544
Katherine A. Kim, N. Dostart, J. Huynh, P. Krein
{"title":"Low-cost solar simulator design for multi-junction solar cells in space applications","authors":"Katherine A. Kim, N. Dostart, J. Huynh, P. Krein","doi":"10.1109/PECI.2014.6804544","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804544","url":null,"abstract":"Multi-junction solar cells are commonly used in space applications where they are exposed to the air mass 0 (AM0) spectrum. Solar simulators are used to emulate the AM0 spectrum for ground testing of the solar cells before the space application is launched. A low-cost solar simulator was designed using LEDs for the visible spectrum and halogen lamps for the infrared spectrum. A design procedure is provided to determine the intensity and geometry of the lights needed to meet spectral match and spatial uniformity requirements. The presented solar simulator design is adequate for testing GaInP2/GaAs/Ge triple-junction solar cells intended for use in a cube satellite application and has a significantly lower cost than commercially-available solar simulators.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131981492","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: 13
Visualizing NISTIR 7628, Guidelines for Smart Grid Cyber Security 可视化nistr 7628，智能电网网络安全指南
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804566
Matthew J Harvey, Daniela Long, K. Reinhard
{"title":"Visualizing NISTIR 7628, Guidelines for Smart Grid Cyber Security","authors":"Matthew J Harvey, Daniela Long, K. Reinhard","doi":"10.1109/PECI.2014.6804566","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804566","url":null,"abstract":"The National Institute of Standards and Technology Interagency Report (NISITR) 7628, Guidelines for Smart Grid Cyber Security, provides an analytical framework that stakeholders can use to develop effective Smart Grid related characteristics, risks, and vulnerabilities. NISTIR 7628 spans more than 600 pages and is densely packed with technical information drawn from multiple disciplines, which to many readers is difficult to broadly conceptualize and apply. This paper explores methods for visualizing the complexities of NISTIR 7628's cyber security guidelines for the nascent Smart Grid and aiding readers to better synthesize the information presented.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134431296","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: 77
Study of effectiveness of under-excitation limiter in dynamic modeling of Diesel Generators 欠激励限制器在柴油发电机组动态建模中的有效性研究
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804572
Saeed Mohajeryami, Z. Salami, I. N. Moghaddam
{"title":"Study of effectiveness of under-excitation limiter in dynamic modeling of Diesel Generators","authors":"Saeed Mohajeryami, Z. Salami, I. N. Moghaddam","doi":"10.1109/PECI.2014.6804572","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804572","url":null,"abstract":"The Under Excitation Limiter (UEL) has been introduced in the excitation systems mostly to prevent the loss of synchronism of generators and also prevent exceeding machine under-excited capability limit which otherwise leads to overheating of the stator of the machine and also challenges different part of generator protection and control system. In this paper, its effect on the modeling of Diesel Generator's excitation system during island operation (i.e. local network) is studied. The simulation results performed in the Matlab/Simulink using IEEE type ST2A excitation model suggests that in the local network with mainly inductive loads the UEL is ineffective and it can be neglected in the modeling.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117287245","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
Distribution system event detection and classification using local voltage measurements 利用局部电压测量对配电系统事件进行检测和分类
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804576
D. Phillips, T. Overbye
{"title":"Distribution system event detection and classification using local voltage measurements","authors":"D. Phillips, T. Overbye","doi":"10.1109/PECI.2014.6804576","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804576","url":null,"abstract":"Wide-Area Measurement Systems (WAMS) are being implemented in order to help increase situational awareness within the electric grid. These systems use Phasor Measurement Units (PMUs), devices which can measure the voltage and current within the power system. One kind of PMU is the Frequency Disturbance Recorder (FDR), which measures voltage magnitude, frequency, and phase angle at 10 data samples per second. These measurements are taken at the 120V level, resulting in a relatively low-cost, rapidly deployable alternative to other PMUs. This paper presents an approach to distribution system event detection and classification using voltage data obtained from FDRs installed around the University of Illinois at Urbana-Champaign (UIUC). This model-free classification of events will use pattern recognition techniques to help identify features that may be unique to these disturbances. Analysis will be applied to a sliding window of voltage data, and the results from each window are compared against one another in order to help determine what kind of event occurred.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131156677","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
Optimization of grid-connected wind and battery energy storage system 风电与电池并网储能系统优化
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804552
Kaitlyn J. Bunker, W. Weaver
{"title":"Optimization of grid-connected wind and battery energy storage system","authors":"Kaitlyn J. Bunker, W. Weaver","doi":"10.1109/PECI.2014.6804552","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804552","url":null,"abstract":"This paper implements optimal control strategies in the scenario of a battery energy storage system connected to the electric grid together with a wind turbine. A simplified model for a battery is first developed, along with a state equation model of the system. Optimal control is used to minimize the difference between the actual battery power and the given reference power. The battery is connected to the grid through a buck converter, and the optimal control solution is used to calculate the necessary duty cycle to achieve the desired results. Inequality constraints are added to ensure that the simulation is a realistic model of the behavior of a battery. The control strategy is also demonstrated experimentally with a battery and sample grid system.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125545197","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: 6
Self Adaptive Harmony Search algorithm for Optimal Network Reconfiguration 最优网络重构的自适应和谐搜索算法
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804569
D. Sudha Rani, N. Subrahmanyam, M. Sydulu
{"title":"Self Adaptive Harmony Search algorithm for Optimal Network Reconfiguration","authors":"D. Sudha Rani, N. Subrahmanyam, M. Sydulu","doi":"10.1109/PECI.2014.6804569","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804569","url":null,"abstract":"Distribution network reconfiguration is a complex combinatorial optimization process aimed at finding a radial operating structure that minimizes the system power loss, deviation of node voltages and service restoration while satisfying operating constraints. In this paper, a Self Adaptive Harmony Search algorithm (SAHSA) is proposed to solve the network reconfiguration problem in order to minimize the active and reactive power loss. SAHSA uses a stochastic search and local search instead of a gradient search. Forward and Backward Substitution Power Flow method is used to solve the radial distribution system. The proposed approach is tested on standard IEEE 33-bus and 69-bus radial distribution systems. The results are compared with Music Based Harmony Search Algorithm (MBHSA) and it is observed that the proposed method performed well in terms of the quality of solution.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133799334","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
Three-phase DC-AC converter with five-level four-switch characteristic 具有五电平四开关特性的三相DC-AC变换器
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804556
S. Sajadian, E. D. dos Santos
{"title":"Three-phase DC-AC converter with five-level four-switch characteristic","authors":"S. Sajadian, E. D. dos Santos","doi":"10.1109/PECI.2014.6804556","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804556","url":null,"abstract":"This paper presents a three-phase DC-AC converter with an optimized number of levels per number of switches. Each phase of the proposed converter includes four controlled power switches and it is able to generate five levels. The most significant characteristics of the proposed converter are: (i) reduced number of semiconductor devices, while keeping a high number of levels at the output side of each phase, (ii) no need to control DC-link capacitor voltage as in NPC and flying capacitor topologies, and (iii) reduced semiconductor losses. The principle of operation, modulation technique, and modeling of the proposed converter are presented in this paper. The proposed configuration is simulated and validated experimentally.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134068572","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: 17
Investigating Synchrophasor Data Quality issues 调查同步数据质量问题
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804563
Kenta Kirihara, K. Reinhard, A. Yoon, P. Sauer
{"title":"Investigating Synchrophasor Data Quality issues","authors":"Kenta Kirihara, K. Reinhard, A. Yoon, P. Sauer","doi":"10.1109/PECI.2014.6804563","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804563","url":null,"abstract":"Phasor Measurement Units (PMUs) installed across North America, compute and store synchrophasor data at select locations. However, the efforts to process the synchrophasor data to meet very high operator trust expectations has been challenging. This paper describes Synchrophasor Data Quality (SDQ) Activity, Trustworthy Cyber Infrastructure for the Power Grid (TCIPG) Project efforts to investigate synchrophasor data archived from American Transmission Company's system including both observations from the field to characterize synchrophasor data quality.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130940537","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 model linearization technique for hydraulic wind power systems 水力风力发电系统模型线性化技术
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804547
Masoud Vaezi, A. Izadian, M. Deldar
{"title":"A model linearization technique for hydraulic wind power systems","authors":"Masoud Vaezi, A. Izadian, M. Deldar","doi":"10.1109/PECI.2014.6804547","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804547","url":null,"abstract":"Hydraulic wind turbines are highly nonlinear and work severely under variable disturbances such as load on the generators and the wind speed. For further analysis control implementation on these types of systems a suitable linearized model is needed. Due to the disturbances, the system has a wide range of operating points. Therefore, linearized models on different operating regimes will be needed. Finding the best operating points, to linearize the nonlinear system at, can improve the accuracy of the linearization as well as the stability of the system. This paper propose a new automatic algorithm to indicate the suitable operating points and linearized models.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123517397","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: 13
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