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2015 IEEE Eindhoven PowerTech最新文献

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A two-stage random forest method for short-term load forecasting 短期负荷预测的两阶段随机森林方法
2015 IEEE Eindhoven PowerTech Pub Date : 2016-07-17 DOI: 10.1109/PESGM.2016.7741295
Xiaoyu Wu, Jinghan He, T. Yip, Pei Zhang
{"title":"A two-stage random forest method for short-term load forecasting","authors":"Xiaoyu Wu, Jinghan He, T. Yip, Pei Zhang","doi":"10.1109/PESGM.2016.7741295","DOIUrl":"https://doi.org/10.1109/PESGM.2016.7741295","url":null,"abstract":"Machine learning methods are the main stream algorithms applied in short term load forecasting. However, typical machine learning methods consisting of Artificial Neural Network (ANN) and Support Vector Regression (SVR) have deficiencies hard to overcome, such as easy to be trapped in local optimization (for ANN) or hard to decide kernel parameter and penalty parameter (for SVR). On the other hand, grey relational analysis is an effective method to select proper historical data as training set for training machine learning models. But it is not comprehensive and accurate enough. In this paper, a new two-stage hybrid algorithm aimed to solve these two problems is proposed. Random Forest (RF) method is introduced as the machine learning method, which will not cause overfitting problem and parameters are easy to be tuned. Furthermore, Grey Relational Projection (GRP) is introduced to select similar historical data to train random forest models. The final forecasting results based on real load data prove this new two-stage method performs better than the other two common methods.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131908259","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
Real-time control of microgrids with explicit power setpoints: Unintentional islanding 具有明确功率设定值的微电网实时控制:无意孤岛
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-06 DOI: 10.1109/PTC.2015.7232750
A. Bernstein, J. Le Boudec, L. Reyes-Chamorro, M. Paolone
{"title":"Real-time control of microgrids with explicit power setpoints: Unintentional islanding","authors":"A. Bernstein, J. Le Boudec, L. Reyes-Chamorro, M. Paolone","doi":"10.1109/PTC.2015.7232750","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232750","url":null,"abstract":"We propose a method to perform a safe unintentional islanding maneuver of microgrids. The method is derived in the context of a framework for the real-time control of microgrids, called Commelec, recently proposed by the Authors. The framework uses a hierarchy of software agents that communicate with each other using a common, device independent protocol in order to define explicit power setpoints without the need of droop controllers. We show that the features of the framework allow to design a generic control method for treating unintentional islanding with the following properties. First, the method is able to choose the best candidate slack resource, based on the information obtained from the agents. Second, as the agent responsible for the grid has a global view of the network's status and its resources, it is possible to optimize the performance of the network during and after the islanding transition. Third, after the islanding maneuver it allows for the online switching of the slack resource to that with the best capabilities to face the network's needs. Finally, the method is suitable for inertia-less systems as the control is performed using explicit power setpoints and it does not rely on the frequency signal. We illustrate the benefits of the proposed method via simulation on the LV microgrid benchmark defined by the CIGRÉ Task Force C6.04.02, by comparing its performance to that of the standard droop-based method called load drop anticipator.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128787637","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
Security constraints for wind power operation 风电运行的安全约束
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232319
E. D. de Oliveira, S. M. Mayrink J, M. L. Rodrigues, B. Dias, L. D. de Oliveira, I. Junior
{"title":"Security constraints for wind power operation","authors":"E. D. de Oliveira, S. M. Mayrink J, M. L. Rodrigues, B. Dias, L. D. de Oliveira, I. Junior","doi":"10.1109/PTC.2015.7232319","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232319","url":null,"abstract":"This paper presents a model to include a security constraint for wind power plant in a hydrothermal dispatch problem. The proposed Unit Commitment (UC) is an augmented problem to take into account different scenarios of wind speed during the day. The wind farms are represented by a linear model that the generations are considered proportional to the availability of wind. The proposed optimization model uses DC load flow in which transmission system constraints are included. The hydro plants are considered with constant productivity and the times of starting and stopping of thermal generation units are considered as well as ramp deviation. The results using a test system show that the operation of a hydrothermal system is strongly affected by the inclusion of wind farms.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115113783","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
Fault prevention by recognition and localization of self-extinguishing faults 通过自熄故障的识别和定位来预防故障
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232579
T. Gu, F. Provoost, Wouter Bos
{"title":"Fault prevention by recognition and localization of self-extinguishing faults","authors":"T. Gu, F. Provoost, Wouter Bos","doi":"10.1109/PTC.2015.7232579","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232579","url":null,"abstract":"Spontaneous faults in medium voltage grid are often preceded by a number of self-extinguishing faults. Therefore, it is useful to recognize and localize the self-extinguishing faults. The detected component could then be repaired or replaced in advance, to prevent the persistent fault This paper describes the self-extinguishing fault phenomena and the recognition methodology. The techniques to locate the faulted cable section are proposed, including the rough location by analyzing the measured data and the exact location by applying sophisticated detecting apparatus. In addition, several practical examples from a Dutch distribution system operator are presented.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116761890","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
Phase compensation scheme to improve the accuracy of a power hardware-in-the-loop experiment based on a synchronous generator 基于同步发电机的电力半在环实验中提高实验精度的相位补偿方案
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232517
A. Castro, P. Zuniga, F. Uribe, E. Barocio
{"title":"Phase compensation scheme to improve the accuracy of a power hardware-in-the-loop experiment based on a synchronous generator","authors":"A. Castro, P. Zuniga, F. Uribe, E. Barocio","doi":"10.1109/PTC.2015.7232517","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232517","url":null,"abstract":"The aim of this study is to present a phase compensation scheme that improves the accuracy of a power hardware-in-the-loop simulation. The ideal transformer model interface method along with feedback current filtering is used to connect a synchronous generator simulation to a test system. The generator is modeled using a voltage-behind-reactance representation. Comparison of experimental results against simulations confirms the validity of the proposal.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116940181","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
Robust fault location for two and three terminal lines using synchronized phasor measurements 使用同步相量测量的二和三终端线路的鲁棒故障定位
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232299
Guangyu Feng, A. Abur
{"title":"Robust fault location for two and three terminal lines using synchronized phasor measurements","authors":"Guangyu Feng, A. Abur","doi":"10.1109/PTC.2015.7232299","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232299","url":null,"abstract":"This paper introduces a robust fault location method that utilizes wide area phasor measurements and sparse estimation technique. The proposed method transforms the fault location problem into estimating sparse bus injections in the network, based upon the equivalence in the change of bus voltages between a fault current drawn at an arbitrary point along a line and virtual superimposed current injections at the terminal nodes of the same line. This equivalence not only works for two terminal lines but also three terminal lines. Assuming limited placement of phasor measurements, an underdetermined linear estimation problem whose solution is sparse will be formed. This problem can be solved via sparse estimation especially L1 regularization technique. Considering possible failure of individual measurement units, an extended formulation incorporating sparse error vector is used to increase the method's robustness. Extensive simulation results have verified the effectiveness of the proposed method.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"320 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121350873","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
Requirement to enlarge interface protections frequency ranges for generators connected to distribution networks: Study of alternatives and solution proposal 扩大配电网发电机接口保护频率范围的要求:备选方案和解决方案的研究
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232296
V. Gabrion, D. Klaja, S. Emelin, S. Grenard, Antoine Minaud
{"title":"Requirement to enlarge interface protections frequency ranges for generators connected to distribution networks: Study of alternatives and solution proposal","authors":"V. Gabrion, D. Klaja, S. Emelin, S. Grenard, Antoine Minaud","doi":"10.1109/PTC.2015.7232296","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232296","url":null,"abstract":"New requirements on the stability of the European interconnected power system may lead to a lesser use or even the complete removal of interface protections based on narrow frequency ranges (e.g. [49,5 - 50,5 Hz] in France) for distributed generators connected to the distribution network. As this type of protection allows detecting rapidly most islanding situations, its disappearance would reduce the efficiency of both fast reclosing schemes and islanding detection. A palliative solution must be found that combines technical feasibility, efficiency, low cost and ability to be applied to both MV and LV connected generators. This paper first proposes a method to evaluate the risk of islanding on a MV feeder and then considers the cons and pros of various alternatives to a narrow frequency range interface protection before focusing on a solution currently investigated for the French Distribution network.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127498044","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
Review of technical and economic challenges for implementing rural microgrids in south africa 审查在南非实施农村微电网的技术和经济挑战
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232341
H. Patel, S. Chowdhury
{"title":"Review of technical and economic challenges for implementing rural microgrids in south africa","authors":"H. Patel, S. Chowdhury","doi":"10.1109/PTC.2015.7232341","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232341","url":null,"abstract":"Electrification is a persisting problem all over the world. The worst affected are people who live in rural areas of developing countries. South Africa is no different as they have still to attain 100% electrification. Due to their small-scale nature, off-grid microgrids are well suited to rural electrification purposes. Independent solar, wind, biomass and microhydro microgrids form the main scope of this paper. In order to compare various renewable resources the Levelised Cost of Electricity (LCOE) can be used as a reasonable metric. The technical and economic factors affecting microgrids across the globe are reviewed and interpreted with respect to South Africa in this paper. It is expected that that South Africa can implement microgrids successfully by taking note of these economic factors as well as factors specific to itself, and use them to their advantage so as to solve its rural electrification problem.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"205 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123261277","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
Observability reliability evaluation in power systems considering data uncertainty 考虑数据不确定性的电力系统可观测可靠性评估
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232266
Zahra Khalafi, M. Dehghani, L. Goel, Wenyuan Li
{"title":"Observability reliability evaluation in power systems considering data uncertainty","authors":"Zahra Khalafi, M. Dehghani, L. Goel, Wenyuan Li","doi":"10.1109/PTC.2015.7232266","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232266","url":null,"abstract":"In this paper, observability reliability (OR) and loss of data expectation indices (LODE) are calculated considering data uncertainty. Single contingency of Phasor Measurement Unit (PMU) and branch outages are considered in the calculations and to achieve more realistic results, it is assumed that failure data (repair time and failure rate) of all branches and PMU components have uncertainty. Fuzzy set theory is used to deal with data uncertainty. A fuzzy Monte Carlo Simulation approach is proposed to calculate OR and LODE indices in the presence of uncertainty. The proposed method can be used to determine the most reliable PMU placement among the multiple optimal solutions. The IEEE 14-bus system is used to evaluate the effectiveness of the proposed method.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125526951","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
Reliability and stability analysis of corrective topology control actions 纠偏拓扑控制动作的可靠性和稳定性分析
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232519
Akshay S. Korad, K. Hedman
{"title":"Reliability and stability analysis of corrective topology control actions","authors":"Akshay S. Korad, K. Hedman","doi":"10.1109/PTC.2015.7232519","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232519","url":null,"abstract":"In recent years, the penetration of renewable resources in electrical power systems has increased. These renewable resources add more complexities to power system operations, due to their intermittent nature. As a result, operators must acquire additional reserves in order to maintain reliability. However, one persistent challenge is to determine the optimal location and quantity of reserves; this challenge is exacerbated by the inability to predict key transmission bottlenecks due to this added uncertainty. This paper presents robust corrective topology control, as a congestion management tool, to reduce violations caused by contingencies and renewable uncertainties. The day-ahead topology control formulation is based on the direct current optimal power flow; therefore, switching solutions obtained from these algorithms are tested for AC feasibility and system stability. All numerical results are based on the IEEE-118 bus test case.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115460249","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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