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2015 IEEE Eindhoven PowerTech最新文献

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Frequency control of energy storage system based on hierarchical cluster structure 基于分层簇结构的储能系统频率控制
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232342
Sang-Ji Lee, Jin-Young Choi, Dongjun Won, In-Sun Choi, Geon-Ho An, Yeong-Jun Choi
{"title":"Frequency control of energy storage system based on hierarchical cluster structure","authors":"Sang-Ji Lee, Jin-Young Choi, Dongjun Won, In-Sun Choi, Geon-Ho An, Yeong-Jun Choi","doi":"10.1109/PTC.2015.7232342","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232342","url":null,"abstract":"Deviation of power frequency can greatly impact power system reliability, power quality and economic efficiency. This paper proposes the frequency control of energy storage system based on hierarchical cluster structure. A central agent named by power management system (PMS) contracts with utility for providing the frequency regulation. The agent also manages the whole cluster structure and balances the energy of each storage device. Several local sub-agents named by the energy storage system controllers (ESSC) intermediate between the power management system and the subordinate energy storage devices. The sub-agents perform the frequency response control by P-f droop, and set the power reference to the each energy storage device. Through the demonstration test, response time and ramp rate of the proposed structure and algorithms are calculated and performance of this system is confirmed.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"46 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":"126546351","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
A synchrophasor measurement based method for assessing damping torque contributions from power system stabilizers 基于同步相量测量的电力系统稳定器阻尼扭矩贡献评估方法
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232263
X. Jiang, J. Chow, F. Wilches-Bernal
{"title":"A synchrophasor measurement based method for assessing damping torque contributions from power system stabilizers","authors":"X. Jiang, J. Chow, F. Wilches-Bernal","doi":"10.1109/PTC.2015.7232263","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232263","url":null,"abstract":"This paper proposes a method for assessing the damping torque contribution of generators equipped with power system stabilizers (PSSs) using synchrophasor measurements from disturbance events exhibiting lightly damping oscillations. The method is based on an extension to the Heffron-Phillips and deMello-Concordia synchronizing and damping torque analysis method to include the sensitivities for the terminal bus voltage angle. It requires only examining the phase relationship between the oscillatory components of the generator rotor angle and its terminal bus voltage angle. The method can also be applied to time responses from simulation programs.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"3 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":"126007732","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
Impact of arc impedance on earth fault currents in medium voltage cable networks 中压电缆网络中电弧阻抗对接地故障电流的影响
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232477
R. Bernards, J. Morren, H. Slootweg
{"title":"Impact of arc impedance on earth fault currents in medium voltage cable networks","authors":"R. Bernards, J. Morren, H. Slootweg","doi":"10.1109/PTC.2015.7232477","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232477","url":null,"abstract":"This paper demonstrates the influence of the fault arc on the magnitude of the fault current for single phase to ground faults in underground power cables. A method is suggested which allows incorporation of this impact in practical fault current calculations. Earth faults in underground cable networks depend on many parameters and are therefore complex to model and calculate exactly. Field measurements have shown the magnitude of actual occurring fault currents to sometimes be significantly lower than calculated, occasionally leading to non-selective fault clearing. A model of the arc impedance was developed and subsequently applied and verified in several case studies of actual measured faults. This showed that the arc impedance may cause a substantially lower fault current, but that its relative impact also varies significantly with the location of the fault. The proposed approach can be readily integrated into fault calculations to include this variable impact and allow for more precise determination of actual earth fault currents.","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":"127964519","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
Impact of HP, CHP, PV and EVs on households' electric load profiles HP、CHP、PV和ev对家庭用电负荷的影响
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232784
D. Fischer, Johannes Scherer, Alexander Flunk, N. Kreifels, Karen Byskov-Lindberg, B. Wille-Haussmann
{"title":"Impact of HP, CHP, PV and EVs on households' electric load profiles","authors":"D. Fischer, Johannes Scherer, Alexander Flunk, N. Kreifels, Karen Byskov-Lindberg, B. Wille-Haussmann","doi":"10.1109/PTC.2015.7232784","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232784","url":null,"abstract":"Todays change of technical equipment in private households leads to altered domestic electric load profiles. This work investigates the change of residential electric load profiles when introducing PV, Air-Source-Heat-Pumps, CHP units and electric vehicles (EV). A modular modelling approach is presented, which allows for application on a larger scale, e.g. for simulations of distribution grid or gas and district heating network in residential areas. Results of a one year simulation for a representative German household show that load peaks can vary heavily between 4.05 kW (PV being present) and 24.67 kW (EV being present), i.e. depending on the technology present in a household. The net yearly elctricity demand varies from -1 094 kWh (PV being present) to 14 936 kWh (ASHP being present). This information should be considered when discussing gird planing, energy supply and DSM concepts for residential areas.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"366 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":"115899754","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
Direct methods for stability assessment of two-time-scale electrical power system models 双时间尺度电力系统模型稳定性评估的直接方法
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232664
Edwin Choque Pillco, L. Alberto
{"title":"Direct methods for stability assessment of two-time-scale electrical power system models","authors":"Edwin Choque Pillco, L. Alberto","doi":"10.1109/PTC.2015.7232664","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232664","url":null,"abstract":"In this paper, we extend the application of direct methods, originally proposed for transient stability assessment, to the problem of mid-term stability analysis. By exploring the singular perturbation theory and direct methods, the stability analysis of an electrical power system is split into the stability analysis of two simplified subsystems: the fast and slow subsystems. As a result of this decomposition, more insight into electrical power system dynamics is gained and less conservative estimates of relevant parts of the stability region are obtained. Numerically, time scale algorithms are faster and more robust when compared with traditional ones.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"322 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":"132425174","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
Energy hub modelling and optimisation: an analytical case-study 能源枢纽建模和优化:一个分析案例研究
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232413
G. Beccuti, T. Demiray, M. Batic, Nikola M. Tomasevic, S. Vranes
{"title":"Energy hub modelling and optimisation: an analytical case-study","authors":"G. Beccuti, T. Demiray, M. Batic, Nikola M. Tomasevic, S. Vranes","doi":"10.1109/PTC.2015.7232413","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232413","url":null,"abstract":"Energy hub modelling and analysis has garnered a significant degree of attention in the last few years, with different approaches and formalisms being proposed to provide a unified framework for dealing with such systems. The present work is derived from one such approach and presents a numerical analysis of a real world case-study based on the Bilbao Exhibition Centre. The modelling and optimisation method is employed to assess the economic profitability of upgrading the system by expanding its portfolio of energy assets and evaluating the impact over a number of years of operation.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"6 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":"130151213","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
Effect of reactive power control by photovoltaic power generation on short-term voltage stability 光伏发电无功控制对短期电压稳定的影响
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232338
K. Kawabe, Kazuyuki Tanaka
{"title":"Effect of reactive power control by photovoltaic power generation on short-term voltage stability","authors":"K. Kawabe, Kazuyuki Tanaka","doi":"10.1109/PTC.2015.7232338","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232338","url":null,"abstract":"In this study, we investigate two countermeasures using inverters of photovoltaic (PV) power generation systems to avoid short-term voltage instability caused by sudden shutoff of the PV systems after a voltage sag. One of the countermeasures is the operation of the PV system at a leading power factor in the normal state, and the other is the dynamic reactive power control after the fault. First, these countermeasures are tested for a one-load infinite-bus system where we consider dynamic characteristics of an induction motor load. In the numerical example, a previously proposed analytical method is applied to discuss the effect of the countermeasure on the short-term voltage stability. Next, numerical examples are carried out for a five-machine five-load power system. The results show that these countermeasures can play a substantial role in preventing the voltage instability phenomena caused when a PV system is suddenly interrupted because of a fault.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"35 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":"134117559","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
About the relationship of line overload cascading and loss of synchronism in electric power systems 电力系统中线路过载级联与失同步的关系
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232490
A. Kubis, C. Rehtanz, Jiazhu Xu, Yong Li
{"title":"About the relationship of line overload cascading and loss of synchronism in electric power systems","authors":"A. Kubis, C. Rehtanz, Jiazhu Xu, Yong Li","doi":"10.1109/PTC.2015.7232490","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232490","url":null,"abstract":"This paper discusses the relationship of line overload cascading and loss of synchronism in interconnected power systems. The mechanisms of recent blackouts ending in loss of synchronism are reviewed and assessed. Further, theoretical considerations about the phenomenom of loss of synchronism ending in Out of Step (OOS) are discussed. Moreover, loss of synchronism scenarios are simulated in a multi-area power system simulation, where special emphasis is paid on accurate modeling of involved asset and system protection functions. Based on the assessment of these simulations, recommendations for the design of system protection schemes are given.","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":"131525006","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
Dynamic simulation of a combined AC and MTDC grid with decentralized controllers to share primary frequency control reserves 具有分散控制器共享主频率控制储备的交流和MTDC联合电网的动态仿真
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232782
R. Wiget, G. Andersson, Martin Andreasson, Dimos V. Dimarogonas, K. Johansson
{"title":"Dynamic simulation of a combined AC and MTDC grid with decentralized controllers to share primary frequency control reserves","authors":"R. Wiget, G. Andersson, Martin Andreasson, Dimos V. Dimarogonas, K. Johansson","doi":"10.1109/PTC.2015.7232782","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232782","url":null,"abstract":"The use of multi-terminal HVDC grids is a promising option to tackle the coming challenges in long distance power transmission, but the combined operation of HVDC and AC grids will bring certain challenges. The dynamic interaction from the fast controllable converter station with the rotational inertia dependent AC grids has to be investigated in detail, as well as how the converter stations will be controlled in the static and dynamic case. This paper will focus on the dynamic case and proposes a decentralized controller structure to control the HVDC converter power set-points. The proposed controller does not rely on real-time communication nor on a slack bus. A simulation study is presented to demonstrate the implementation of the controller.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"82 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":"131571452","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
Stochastic Dual Dynamic Programming to schedule energy storage units providing multiple services 随机双动态规划用于调度提供多种服务的储能单元
2015 IEEE Eindhoven PowerTech Pub Date : 2015-09-03 DOI: 10.1109/PTC.2015.7232775
O. Mégel, J. Mathieu, G. Andersson
{"title":"Stochastic Dual Dynamic Programming to schedule energy storage units providing multiple services","authors":"O. Mégel, J. Mathieu, G. Andersson","doi":"10.1109/PTC.2015.7232775","DOIUrl":"https://doi.org/10.1109/PTC.2015.7232775","url":null,"abstract":"When energy storage units, such as batteries, are installed to support photovoltaics and defer power system upgrades they are inactive or only partially used most of time. Their unused capacities could be used to provide frequency control, allowing them to generate additional revenues. However, the challenge is to decide how much of their energy and power capacities to allocate to either service. Photovoltaic generation profiles are difficult to forecast accurately, and frequency deviation is a highly stochastic process. This paper develops a Stochastic Dual Dynamic Programming (SDDP) approach to generate decision rules for determining how much capacity to assign to each service at each time step, depending on the time of day and the storage energy level. Unlike Stochastic Dynamic Programming (SDP), our approach does not require us to discretize the state and decision spaces. We show that, when storage efficiency is high, SDDP outperforms SDP, but when short computation times are required, SDP may be preferred. We also discuss challenges associated with using SDDP when storage efficiency is lower than unity. Finally, we show that the number of tuning parameters is lower for SDDP than for SDP, and that the relation between tuning parameters and policy quality is more intuitive for SDDP than for SDP.","PeriodicalId":193448,"journal":{"name":"2015 IEEE Eindhoven PowerTech","volume":"147 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":"131764913","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
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