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2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)最新文献

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Estimation of the bus admittance matrix for transmission systems from synchrophasor data 从同步相量数据估计传输系统母线导纳矩阵
2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D) Pub Date : 2016-05-03 DOI: 10.1109/TDC.2016.7520017
M. Saadeh, Muthanna Alsarray, R. McCann
{"title":"Estimation of the bus admittance matrix for transmission systems from synchrophasor data","authors":"M. Saadeh, Muthanna Alsarray, R. McCann","doi":"10.1109/TDC.2016.7520017","DOIUrl":"https://doi.org/10.1109/TDC.2016.7520017","url":null,"abstract":"This research proposes a technique for determining the bus admittance matrix Ybus for large-scale power systems from recorded synchrophasor measurements. The approach is based on recognizing that measurements of bus injection currents Ibus can be viewed as signals produced by a random process. In this manner, the corresponding bus voltages Vbus are also stochastic signals that are related through a cross-covariance matrix to the injection current vector Ibus. Using estimation techniques developed for statistical signal processing, the cross-covariance matrix is shown to be Ybus. The increasing use of synchrophasors has enabled large-scale data collection of time synchronized bus injection currents and voltages. The new Zbus estimation method is applied to the IEEE 68 bus benchmark system to demonstrate the validity of approach. The accuracy and convergence rate of the method is evaluated under conditions corresponding to wide-area synchrophasors data collection. The results indicate that the method is broadly applicable to determining Ybus and Zbus for electric power transmission and distribution systems equipped with synchrophasor data collection technology.IEEE 68 bus benchmark systemwide-area synchrophasors data collection.electric power transmissiondistribution systemssynchrophasor data collection technology.","PeriodicalId":6497,"journal":{"name":"2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)","volume":"73 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80368567","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
Mitigation of adverse effects of gics on transformers using look-up table controlled ground resistance 使用查找表控制接地电阻来减轻接地电流对变压器的不利影响
2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D) Pub Date : 2016-05-03 DOI: 10.1109/TDC.2016.7519935
Ahmed Abu Hussein, M. Ali
{"title":"Mitigation of adverse effects of gics on transformers using look-up table controlled ground resistance","authors":"Ahmed Abu Hussein, M. Ali","doi":"10.1109/TDC.2016.7519935","DOIUrl":"https://doi.org/10.1109/TDC.2016.7519935","url":null,"abstract":"Geomagnetically induced currents (GICs) in power systems can cause problems ranging from transformer overheating to tripping of protective devices and voltage instability. This paper presents a new approach by using a lookup table (LUT) controlled resistance to suppress the GIC flowing through the neutral of transformers. The performance of the proposed method is compared with that of the currently adopted method, i. e, the fixed-capacitor method. In this work, the tested network consists of a single synchronous machine connected through a step-up delta/wye transformer, transmission lines, and another step-down transformer to an infinite bus. The MATLAB/SIMULINK software is utilized to carry out simulations. Simulation results show that the proposed method is able to stabilize the system under GIC events as well as mitigate the zero sequence current flowing during unsymmetrical faults. Moreover, the performance of the proposed method is better than that of the conventional method.","PeriodicalId":6497,"journal":{"name":"2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)","volume":"34 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80288885","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
A preliminary communication-assisted hybrid control strategy for maximum reliability and efficiency in smart grids 智能电网可靠性和效率最大化的通信辅助混合控制策略初探
2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D) Pub Date : 2016-05-03 DOI: 10.1109/TDC.2016.7520079
A. Shahid
{"title":"A preliminary communication-assisted hybrid control strategy for maximum reliability and efficiency in smart grids","authors":"A. Shahid","doi":"10.1109/TDC.2016.7520079","DOIUrl":"https://doi.org/10.1109/TDC.2016.7520079","url":null,"abstract":"The grid is becoming smart by adding sensing and communication technologies to it with a certain degree of operability and flexibility in topology. The hallmark of modern power systems is a highly integrated, flexible networked and communicative cyber-physical infrastructure having both continuous and discrete dynamics. Issues arising due to the complexity of these systems can be potentially solved by designing power control algorithms based on the information available at any instant of time. One of the developing technique is hybrid control which is mainly featured for a system under different operating conditions and in different operating states. This paper presents a unique approach for modeling and control of a smart grid considering its hybrid and complex nature. A model of smart grid has been developed with communication-assisted hybrid control strategy. The information on power flow management is updated to the operator through a feedback mechanism in order to meet desirable efficiency and reliability standards.","PeriodicalId":6497,"journal":{"name":"2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82554688","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: 10
Analysis of power factor over correction in a distribution feeder 配电馈线功率因数过校正分析
2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D) Pub Date : 2016-05-03 DOI: 10.1109/TDC.2016.7519899
A. Bastos, S. Santoso, Levent Biyikli
{"title":"Analysis of power factor over correction in a distribution feeder","authors":"A. Bastos, S. Santoso, Levent Biyikli","doi":"10.1109/TDC.2016.7519899","DOIUrl":"https://doi.org/10.1109/TDC.2016.7519899","url":null,"abstract":"Capacitor banks are commonly connected to the power system to enhance its reliability by providing voltage support, improving power factor, and increasing the system capacity. They are usually switched in and out of the system according to the amount of connected load. This paper analyzes measurement data of a distribution utility with capacitor banks located downstream from the power quality monitor. It was observed that the amount of reactive power injected into the system was larger than the necessary, resulting in power factor over correction. The paper then provides an analysis method to determine the capacitor bank size to achieve a desired power factor correction. An algorithm is also proposed to override a switching control (usually time, voltage, or temperature), such that the switching is performed only if the power factor is below a preset minimum value. Moreover, it is advised to switch each phase individually, as the reactive power flow differs significantly between the three phases.","PeriodicalId":6497,"journal":{"name":"2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)","volume":"18 2 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89056163","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
Probabilistic impact of transmission line switching on power system operating states 输电线路切换对电力系统运行状态的概率影响
2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D) Pub Date : 2016-05-03 DOI: 10.1109/TDC.2016.7519884
P. Dehghanian, M. Kezunovic
{"title":"Probabilistic impact of transmission line switching on power system operating states","authors":"P. Dehghanian, M. Kezunovic","doi":"10.1109/TDC.2016.7519884","DOIUrl":"https://doi.org/10.1109/TDC.2016.7519884","url":null,"abstract":"Power system topology control as a planned corrective action in face of contingencies and also as a measure for achieving economic gains in real time market operation has been recently studied as an enhancement in hour- and day-ahead operations. Although attractive from the reliability and economic standpoint, the attention must be paid to the impact on the power system operating states following the switching implementation to make sure the system security performance in the new migrated operating state is not jeopardized. This paper suggests a probabilistic measure to foresee the likelihood of experiencing undesirable operating state following execution of an optimal hour-ahead switching plan. The presented approach can also be helpful in selecting the most practical switching action when the optimization engine can provide multiple optimal switching scenarios. The proposed tool is tested on a modified IEEE 118-Bus Test System to demonstrate its applicability and effectiveness.","PeriodicalId":6497,"journal":{"name":"2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87543892","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
Reactive power compensation for reliability improvement of power systems 提高电力系统可靠性的无功补偿
2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D) Pub Date : 2016-05-03 DOI: 10.1109/TDC.2016.7519910
M. Benidris, Samer Sulaeman, Yuting Tian, J. Mitra
{"title":"Reactive power compensation for reliability improvement of power systems","authors":"M. Benidris, Samer Sulaeman, Yuting Tian, J. Mitra","doi":"10.1109/TDC.2016.7519910","DOIUrl":"https://doi.org/10.1109/TDC.2016.7519910","url":null,"abstract":"This paper investigates the effects of reactive power support limits on power system reliability. In evaluating the reliability of power systems, several load curtailments are caused by voltage limit violations which can be alleviated using reactive power support. The existing methods of estimating the effects of voltage limit violations and reactive power limits do not provide the amount of reactive power support that is required to alleviate the violations. The presented work provides a quantitative measure of reactive power compensation for reliability improvement. This measure is based on constructing a probability distribution function for the required reactive power compensation. Reliability indices of Loss of Load Expectation and Expected Unserved Energy are used to estimate the lack of reactive power support. A non-linear, AC power flow based model is used to accurately represent system load curtailment remedial actions. A state space reduction technique is utilized to reduce the computation time. The proposed method is applied on the modified IEEE RTS and results show the improvement of power system reliability due to reactive power compensation.","PeriodicalId":6497,"journal":{"name":"2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)","volume":"21 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87169622","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
Generation and evaluation of photovoltaic forecasts based on freely available weather data 基于可免费获得的天气数据生成和评估光伏预测
2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D) Pub Date : 2016-05-03 DOI: 10.1109/TDC.2016.7520042
Alexander Zeh, Christoph Hainzinger, R. Witzmann
{"title":"Generation and evaluation of photovoltaic forecasts based on freely available weather data","authors":"Alexander Zeh, Christoph Hainzinger, R. Witzmann","doi":"10.1109/TDC.2016.7520042","DOIUrl":"https://doi.org/10.1109/TDC.2016.7520042","url":null,"abstract":"Photovoltaic forecasts are necessary in many fields of the energy industry. The rapid expansion of photovoltaic systems within the last years poses a growing problem especially for grid operators. New innovative concepts like smart storage solutions for reducing the grid load often need a generation forecast in order to be operated properly. In this work, a photovoltaic forecast based on only freely available cloud data is developed and compared to a commercially available one by evaluating their accuracy. Therefore, both forecasts are adapted to a 14 kWp photovoltaic system in Upper Bavaria, Germany. An Analysis of the results shows that both forecasts yield comparable results, but the one based on freely available data shows extreme inaccuracies in case of difficult prediction conditions like changeable cloud movement.","PeriodicalId":6497,"journal":{"name":"2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)","volume":"22 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87275044","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
Correlations of topological measures with power systems vulnerability and identification of potential locations to install voltage control devices 拓扑测量与电力系统脆弱性的相关性以及电压控制装置安装的潜在位置的识别
2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D) Pub Date : 2016-05-03 DOI: 10.1109/TDC.2016.7520060
Efrain E. Tamayo R, Tohru Yoshihara, S. Ohara
{"title":"Correlations of topological measures with power systems vulnerability and identification of potential locations to install voltage control devices","authors":"Efrain E. Tamayo R, Tohru Yoshihara, S. Ohara","doi":"10.1109/TDC.2016.7520060","DOIUrl":"https://doi.org/10.1109/TDC.2016.7520060","url":null,"abstract":"Power systems can be regarded as complex networks; hence topological measures have been applied to the analysis of the local properties of components and in particular to the assessment of structural vulnerability. However, correlations between topological measures and vulnerability are not yet fully evidenced in the literature. These correlations have been studied for the entropy-degree and electrical-betweenness measures. Here, firstly, we provide supporting evidence on this respect by comparing the net-ability measure to the system-overload-index for the IEEE 30-bus and 118-bus base-case models, when doubling or removing lines, and for N-1 and N-2 contingency cases. Secondly, a new topological measure, average-equivalent-impedance, is proposed for the identification of potential locations to install voltage control devices. The results of this topological measure were validated by comparing them to the maximum-loading of each bus in both IEEE models and also to other device location optimization methods.","PeriodicalId":6497,"journal":{"name":"2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)","volume":"111 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83556873","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
HiDry72: Short-circuit withstand test upon the biggest ever dry-type power transformer HiDry72:有史以来最大的干式电力变压器抗短路试验
2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D) Pub Date : 2016-05-03 DOI: 10.1109/TDC.2016.7520064
M. Berrogaín, R. Murillo, A. Nogues, Juan Maorad, M. Cuesto, F. Mauri, T. Gonzalez, Felix Royo, M. Carlen
{"title":"HiDry72: Short-circuit withstand test upon the biggest ever dry-type power transformer","authors":"M. Berrogaín, R. Murillo, A. Nogues, Juan Maorad, M. Cuesto, F. Mauri, T. Gonzalez, Felix Royo, M. Carlen","doi":"10.1109/TDC.2016.7520064","DOIUrl":"https://doi.org/10.1109/TDC.2016.7520064","url":null,"abstract":"Reliability in power transformers is a key factor, and based on its performance during the life time. Whenever safety for people or property is of primary concern, dry-type transformers are used. Traditionally dry transformers were only for MV distribution applications available, but recently dry-type power transformers were introduced for the 72.5 kV sub-transmission voltage class, with ratings up to 63 MVA. These transformers allow to easily construct substations in any building or underground location, without the need for costly fire protection. This allows to go with higher voltage directly to the main load centers, providing higher power and reducing distribution losses. Meanwhile several reference installations are in operation.","PeriodicalId":6497,"journal":{"name":"2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)","volume":"58 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86631361","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
Considerations on the application of PTPv2 over a PRP network 关于PTPv2在PRP网络中应用的考虑
2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D) Pub Date : 2016-05-03 DOI: 10.1109/TDC.2016.7520044
Gustavo Silvano, H. Rachadel, M. Dalmas, C. Dutra, M. Zapella
{"title":"Considerations on the application of PTPv2 over a PRP network","authors":"Gustavo Silvano, H. Rachadel, M. Dalmas, C. Dutra, M. Zapella","doi":"10.1109/TDC.2016.7520044","DOIUrl":"https://doi.org/10.1109/TDC.2016.7520044","url":null,"abstract":"Power grid advances in the last years allowed new distributed applications developments. In this context, time synchronization is a very important issue, as many applications need to achieve high synchronization accuracy. The IEEE 1588-2008 standard [2] defines the second version of PTP, designed to achieve clock accuracy in the sub-microsecond range. In these scenarios Ethernet network redundancy is also important to assure system availability and fault robustness. PRP, defined in the IEC 62439-3 Ed. 3 [3], is designed to improve robustness to network failures with zero-time recovery. This paper describes the challenges of a PTPv2 implementation in a PRP network and also presents the tests and results when using these protocols in a real case scenario.","PeriodicalId":6497,"journal":{"name":"2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)","volume":"10 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84047086","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
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