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Optimal PMU placement considering contingency-constraints for power system observability and measurement redundancy 考虑电力系统可观测性和测量冗余约束的PMU优化配置
2016 IEEE Power and Energy Conference at Illinois (PECI) Pub Date : 2016-02-01 DOI: 10.1109/PECI.2016.7459251
S. Akhlaghi
{"title":"Optimal PMU placement considering contingency-constraints for power system observability and measurement redundancy","authors":"S. Akhlaghi","doi":"10.1109/PECI.2016.7459251","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459251","url":null,"abstract":"This paper proposes a two-step optimization approach for optimal placement of phasor measurement unit (PMU) to obtain complete observability of power system in the case of preinstalled PMUs. The complete observability of the system in the case of normal operation and pre-installed PMUs is formulated and then, different contingency conditions in the system are considered, i.e. single line outage and single bus outage. At the first step of the proposed two-step optimization approach, a minimization model is applied to convex programing (cvx) to achieve the minimum number of PMUs which guarantees the complete observability of the system. At the second step, simulated annealing (SA) is applied to maximize the measurement redundancy. Additionally, to further reduce the number of required PMUs the zero-injection bus effect is considered. At last, the proposed approach is tested on several IEEE standard systems, i.e. IEEE 14-bus, 30-bus, 39-bus, IEEE 16-machine 68-bus and 118-bus, to demonstrate the effectiveness of the proposed approach.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121276349","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: 21
Visualization of power system wide-area, time varying information 电力系统广域、时变信息的可视化
2016 IEEE Power and Energy Conference at Illinois (PECI) Pub Date : 2016-02-01 DOI: 10.1109/PECI.2016.7459263
K. M. Gegner, T. Overbye, K. Shetye, J. Weber
{"title":"Visualization of power system wide-area, time varying information","authors":"K. M. Gegner, T. Overbye, K. Shetye, J. Weber","doi":"10.1109/PECI.2016.7459263","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459263","url":null,"abstract":"An ongoing challenge in power system research is how to best utilize time-varying power system data and ultimately how to present it to human operators and planners in a concise and understandable way. This paper presents two newer visualization techniques for time-varying data across wide-area networks, including (1) animation loops that combine periodic snapshots of the grid into time lapse videos defined across geographic areas and (2) sparklines which summarize trends in time varying data as word sized line plots. Examples for each visualization technique are presented and their implementation issues discussed.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133190609","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
A conduction cooled Nb3Sn racetrack coil: Design, construction, and testing 传导冷却Nb3Sn赛道线圈:设计、建造和测试
2016 IEEE Power and Energy Conference at Illinois (PECI) Pub Date : 2016-02-01 DOI: 10.1109/PECI.2016.7459230
David Loder, R. Sanchez, M. Feddersen, K. Haran, M. Sumption, M. Tomsic, J. Yue, D. Doll
{"title":"A conduction cooled Nb3Sn racetrack coil: Design, construction, and testing","authors":"David Loder, R. Sanchez, M. Feddersen, K. Haran, M. Sumption, M. Tomsic, J. Yue, D. Doll","doi":"10.1109/PECI.2016.7459230","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459230","url":null,"abstract":"This paper describes a detailed design of a 6 Tesla Nb3Sn superconducting racetrack coil designed for conduction cooling. We then describe a bench test pursued as a proof of concept for one winding of an actively-shielded, air core electric machine with superconducting field windings. Design selection from a previously computed pareto-optimal front as well as electromagnetic performance of the test coil is discussed. The winding and support structure design is discussed. Analysis of the thermal performance is carried out to verify required temperatures given the cryostat and cryocooler setup. Finally, a strain analysis is performed in order to verify that the superconducting windings are within an acceptable strain level to avoid mechanical breakage as well as excessive degradation of the critical surface. Additionally, the structural integrity of the support components is verified. Test procedures and preliminary results are described.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124201559","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
Quantifying photovoltaic fluctuation with 5 kHz data: Implications for energy loss via maximum power point trackers 用5khz数据量化光伏波动:通过最大功率点跟踪器对能量损失的影响
2016 IEEE Power and Energy Conference at Illinois (PECI) Pub Date : 2016-02-01 DOI: 10.1109/PECI.2016.7459266
J. A. Magerko, Yue Cao, P. Krein
{"title":"Quantifying photovoltaic fluctuation with 5 kHz data: Implications for energy loss via maximum power point trackers","authors":"J. A. Magerko, Yue Cao, P. Krein","doi":"10.1109/PECI.2016.7459266","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459266","url":null,"abstract":"We aim to systematically quantify photovoltaic (PV) variability contained within different frequency bands, primarily for applications in PV maximum power point tracking (MPPT) design. We first discuss the usefulness in quantifying energy capture for various maximum power point (MPP) update rates from nearly 500 days of 5 kHz photovoltaic recordings. Next, we justify the methods used to convert MPP sweep data to single-point, usable, current, voltage, and power values. We discuss fitting methods that yield the MPP under calm irradiance dynamics and explore the approach used during periods of more stochastic changes. This is followed by analysis of raw, high-frequency content and a proposed method to calculate associated energy capture reduction. The conclusion finds an absolute upper bound on solar data variability for a given MPP update rate in terms of energy capture. Finally, we use the previous results and demonstrate an economic analysis that can aid in designing future MPP tracker specifications.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133936224","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
Double LLC resonant tanks based DC-DC converter with integrated dual transformers for PV power systems 基于双LLC谐振槽的集成双变压器DC-DC变换器的光伏发电系统
2016 IEEE Power and Energy Conference at Illinois (PECI) Pub Date : 2016-02-01 DOI: 10.1109/PECI.2016.7459217
S. Iqbal
{"title":"Double LLC resonant tanks based DC-DC converter with integrated dual transformers for PV power systems","authors":"S. Iqbal","doi":"10.1109/PECI.2016.7459217","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459217","url":null,"abstract":"This paper proposes a double LLC resonant tanks based dc-dc converter with integrated dual transformers for photovoltaic power generation systems. It consists of a pair of power MOSFETs, LLC tanks, transformers and one voltage doubler. Both transformers including magnetizing and resonant inductors are realized on a single EE core. Primary windings of transformers are connected across half-bridge network via resonant capacitors while secondary windings are connected to voltage doubler to boost the output voltages. LLC Tanks are fed alternately by operating power switches of half-bridge network operate with interleaved half switching cycle. Therefore, power transmission from source to load is shared by two tanks circuits leading to reduction of voltage/current stress on resonant components. The validity of operational principle and performance of proposed converter is confirmed by experimental results of a 150-W prototype. The maximum efficiency of converter is measured to be 94% at input voltage of 60-V.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"287 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114568521","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
Sliding mode extremum seeking control for maximum power point tracking in wind system 风电系统最大功率点跟踪的滑模极值寻优控制
2016 IEEE Power and Energy Conference at Illinois (PECI) Pub Date : 2016-02-01 DOI: 10.1109/PECI.2016.7459231
Dan Shen, P. Khayyer, A. Izadian
{"title":"Sliding mode extremum seeking control for maximum power point tracking in wind system","authors":"Dan Shen, P. Khayyer, A. Izadian","doi":"10.1109/PECI.2016.7459231","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459231","url":null,"abstract":"This paper proposes a sliding mode extremum seeking control (SM-ESC) for maximum power point tracking (MPPT) in variable speed wind energy conversion system, which includes the permanent magnet synchronous generator (PMSG), the uncontrolled rectifier, boost converter, battery and the DC constant power load (CPL). The presented MPPT control method integrates the theory of sliding mode control and the extremum seeking control. It refrains from some disadvantages in traditional wind MPPT methods, such as detecting the gradient of output power vs. rotor speed, longer transient response, high frequency noise and larger oscillations of output power. The specific working principle and adaptive step size setting of the MPPT controller are also analyzed based on the SM-ESC algorithm. Numerical simulation results demonstrate accurate operation and robustness of the MPPT algorithm in each operating condition.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125622328","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
Performance analysis of the Slip mode frequency shift islanding detection method under different inverter interface control strategies 滑移模移频孤岛检测方法在不同逆变器接口控制策略下的性能分析
2016 IEEE Power and Energy Conference at Illinois (PECI) Pub Date : 2016-02-01 DOI: 10.1109/PECI.2016.7459250
S. Akhlaghi, A. Akhlaghi, A. Ghadimi
{"title":"Performance analysis of the Slip mode frequency shift islanding detection method under different inverter interface control strategies","authors":"S. Akhlaghi, A. Akhlaghi, A. Ghadimi","doi":"10.1109/PECI.2016.7459250","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459250","url":null,"abstract":"This paper investigates the performance of Slip mode frequency shift (SMS) islanding detection method (IDM) in the presence of different inverter interface control strategies (IICS). The Impact of the two constant-current and constant-power IICS when the inverters are equipped with SMS-IDM, are compared and analyzed from detecting islanding point of view. This study is based on time-domain simulations in the MATLAB/Simulink. Performance of the SMS-IDM is tested under UL-1741 test condition. The results of study prove that, SMS-IDM efficiency can be degraded by the power regulator of the constant-power control strategy. So, efficiency of the SMS-IDM on islanding detection with constant-current control strategy is much higher than the constant-power control. Therefore, to improve the performance of the SMS-IDM with constant-power IICS, A new hybrid islanding detection method combination of the SMS-IDM and reactive power deviation is proposed. Finally, performance of the proposed method is evaluated under the UL-1741 anti-islanding test condition, load switching and loads with high quality factor.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121807441","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: 35
Towards a new paradigm for ultrafast transmission line relaying 迈向超高速传输线中继的新范式
2016 IEEE Power and Energy Conference at Illinois (PECI) Pub Date : 2016-02-01 DOI: 10.1109/PECI.2016.7459264
Ahmad Abdullah
{"title":"Towards a new paradigm for ultrafast transmission line relaying","authors":"Ahmad Abdullah","doi":"10.1109/PECI.2016.7459264","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459264","url":null,"abstract":"Digital impedance protection of transmission lines suffers from known shortcomings not only as a principle but also as an application as well. This necessitates developing a new relaying principle that overcomes those shortcomings. Such a principle is offered in this paper and is currently being validated using field data. The principle is a new application of wavelet based neural networks. The application uses high frequency content of a subset of local currents of one end of a protected line to classify transients on the line protected and its adjacent lines. The scheme can classify transients -including faults- occurring on a protected line, categorize transients on adjacent lines and pinpoint the line causing the transient event. It is shown that the feature vector of the event can be determined from a subset of local currents without using any voltages altogether. The subset of local currents consists of the two aerial modes of the local current. Modal transformation is used to transform phase currents to modal quantities. Discrete Wavelet Transform (DWT) is used to extract high frequency components of the two aerial modal currents. A feature vector is built using the wavelets details coefficients of one level of the aerial modes and used to train a neural network. Results show that the classes corresponding to each transient event type on the protected line and its adjacent lines are almost linearly separable from each other. Results demonstrate that very accurate classification within one eighth of a cycle is possible.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115440716","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
A high-speed, high-frequency, air-core PM machine for aircraft application 一种高速、高频、空芯永磁机床，适用于飞机
2016 IEEE Power and Energy Conference at Illinois (PECI) Pub Date : 2016-02-01 DOI: 10.1109/PECI.2016.7459221
Andy Yoon, X. Yi, J. Martin, Yuanshan Chen, K. Haran
{"title":"A high-speed, high-frequency, air-core PM machine for aircraft application","authors":"Andy Yoon, X. Yi, J. Martin, Yuanshan Chen, K. Haran","doi":"10.1109/PECI.2016.7459221","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459221","url":null,"abstract":"High number of magnetic poles in an electric machine allows reduction in radial thickness of stator and rotor yoke and thus heavy alloy. If frequency is allowed to increase with pole-count (constant speed), power level can be maintained. Thus, high frequency, together with high pole count, can improve power density of rotating electric machines. The proposed high frequency concept is applied to designing a 1 MW motor, with power density and efficiency goals of > 13kW/kg and > 96%, respectively.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130373009","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: 88
Remote feeder transfer between out-of-phase sources using STS 使用STS在非相源之间进行远程馈线传输
2016 IEEE Power and Energy Conference at Illinois (PECI) Pub Date : 2016-02-01 DOI: 10.1109/PECI.2016.7459255
Maziar Isapour Chehardeh, Mishari Metab Almalki, C. Hatziadoniu
{"title":"Remote feeder transfer between out-of-phase sources using STS","authors":"Maziar Isapour Chehardeh, Mishari Metab Almalki, C. Hatziadoniu","doi":"10.1109/PECI.2016.7459255","DOIUrl":"https://doi.org/10.1109/PECI.2016.7459255","url":null,"abstract":"To insure reliability in electrical networks, loads are supplied by more than one source. In this paper a transfer scheme using two Static Transfer Switches (STS) located remotely is presented for transferring the feeder load to an alternate source that is out of phase from the primary (preferred source). The objective is to have a minimum disruption to the feeder voltage in terms of the dead time for transfer appearing as notches in the voltage waveform. The new proposed transfer method requires only a minimum communication between the two STS units in order to achieve synchronization. Different case studies of transferring power in a typical network while two sources having a phase difference are simulated and presented in this paper using MATLAB/SIMULINK.","PeriodicalId":359438,"journal":{"name":"2016 IEEE Power and Energy Conference at Illinois (PECI)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114981432","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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