2014 North American Power Symposium (NAPS)最新文献_第10页

Application of node centrality in transmission expansion planning under uncertainty 不确定条件下节点中心性在输变电规划中的应用

2014 North American Power Symposium (NAPS) Pub Date : 2014-11-24 DOI: 10.1109/NAPS.2014.6965416

F. Thiam, C. DeMarco

{"title":"Application of node centrality in transmission expansion planning under uncertainty","authors":"F. Thiam, C. DeMarco","doi":"10.1109/NAPS.2014.6965416","DOIUrl":"https://doi.org/10.1109/NAPS.2014.6965416","url":null,"abstract":"Methods for transmission expansion planning have long been associated with detailed scenarios for the location and types of future generation and expected load growth. Such expansion futures might seek transmission additions to meet short/long term needs, while addressing anticipated reliability issues, reduction in CO2 emissions, integration of renewable sources of energy, among other objectives and constraints. Today, there is tremendous uncertainty and a myriad of possibilities in future generation mix and placement, load growth, and storage technology. Also, stringent requirements in CO2 emission policy have emerged in recent years. These uncertainties are putting great strain on present practice in transmission expansion planning. In lieu of scenario driven methods, we explore a different philosophy in approaching the transmission expansion planning problem. Based on properties that are inherent to the structure of the network, the techniques presented here make use of results from spectral partitioning and concepts from graph centrality to suggest most suitable bus choices for placement of transmission lines. Derived from the circuit concepts of effective resistance and resistance distance, a measure closely associated with the bus impedance matrix (Zbus) widely used in power system fault studies, the centrality measure adopted in this work will correspond to the information centrality (IC) metric employed in other graph problems. While there exist a number of other well-known centrality indices, e.g., shortest path betweenness, closeness, degree, eigenvector centrality, this work will argue that IC proves best suited to the transmission expansion planning problem. These results will be demonstrated via an illustrative case based on IEEE 300-bus system.","PeriodicalId":421766,"journal":{"name":"2014 North American Power Symposium (NAPS)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134029673","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

An optimization based generator placement strategy in network reduction 网络缩减中基于优化的发电机布局策略

2014 North American Power Symposium (NAPS) Pub Date : 2014-11-24 DOI: 10.1109/NAPS.2014.6965401

Yujia Zhu, D. Tylavsky

{"title":"An optimization based generator placement strategy in network reduction","authors":"Yujia Zhu, D. Tylavsky","doi":"10.1109/NAPS.2014.6965401","DOIUrl":"https://doi.org/10.1109/NAPS.2014.6965401","url":null,"abstract":"Solving the optimal power flow (OPF) problem on a large power system is computationally expensive. Network reduction and ac-to-dc network conversion can relieve this burden by simplifying the full system model to a smaller and mathematically simpler model. Traditional reduction methods, like Ward reduction, fractionalize generators when the buses they are attached to are removed, and scatters these fractions to topologically adjacent buses. In some OPF applications, this type of generator modeling is problematic. An improved approach is to keep generators intact by moving them whole to buses in reduced model and then redistributing loads to maintain base-case line flows. Determining generator placement using a traditional shortest electrical distance (SED) based method may result in cases where the OPF solution on reduced model is infeasible while the full model has a feasible solution. In this paper, an improved generator placement method is proposed. Tests show that the proposed method yields a better approximation to the full model OPF solutions and is more likely to produce a reduced model with a feasible solution if the unreduced model has a feasible solution.","PeriodicalId":421766,"journal":{"name":"2014 North American Power Symposium (NAPS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134255635","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

Increasing penetration of Distributed Generation with meshed operation of distribution systems 随着配电系统的并网运行，分布式发电的渗透率不断提高

2014 North American Power Symposium (NAPS) Pub Date : 2014-11-24 DOI: 10.1109/NAPS.2014.6965465

M. Davoudi, V. Cecchi, J. R. Aguero

引用次数: 20

Day-ahead battery scheduling in microgrid considering wind power uncertainty using ordinal optimization 考虑风力发电不确定性的微电网日前电池调度

2014 North American Power Symposium (NAPS) Pub Date : 2014-11-24 DOI: 10.1109/NAPS.2014.6965428

Qianyao Xu, Ning Zhang, C. Kang, Ruoyang Wang, Jiangran Wang, Zhengpai Cui, Zhigang Yang

引用次数: 7

A heuristic power optimization method for photovoltaic systems 光伏系统的启发式功率优化方法

2014 North American Power Symposium (NAPS) Pub Date : 2014-11-24 DOI: 10.1109/NAPS.2014.6965454

J. Icenhower, M. Zarghami, M. Vaziri

{"title":"A heuristic power optimization method for photovoltaic systems","authors":"J. Icenhower, M. Zarghami, M. Vaziri","doi":"10.1109/NAPS.2014.6965454","DOIUrl":"https://doi.org/10.1109/NAPS.2014.6965454","url":null,"abstract":"California is striving to increase penetration of Distributed Generation (DG) to 33% by 2020. This effort is to promote energy independence of the state of California and to lead the country to be more environmentally conscious. However, integrating DG and increasing penetration to high levels will negatively impact the grid. One issue that has been discussed is that DG may supply more power than is demanded by the load. This may cause overvoltage issues at the buses where the DG is connected and also may cause power to flow from the distribution to the transmission system. Current legislation dictates DG to operate at unity power factor and prohibits DG to inject or absorb reactive power. This is to ensure that the Utilities can control system voltage and that the customers do not regulate voltage at the interconnection points. However, when considering system performance, this legislation is not ideal. The mission of this paper is to provide convincing data that will demonstrate the benefits of controlling reactive power for better system performance. Furthermore, it will provide a heuristic method that calculates near-optimum dispatch of DG in the distribution system in a fast approach which could potentially be implemented in practical, real-time applications.","PeriodicalId":421766,"journal":{"name":"2014 North American Power Symposium (NAPS)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116383614","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

Examining some prospect scenarios for the electricity grid infrastructure modernization in Saudi Arabia 研究了沙特阿拉伯电网基础设施现代化的一些前景方案

2014 North American Power Symposium (NAPS) Pub Date : 2014-11-24 DOI: 10.1109/NAPS.2014.6965387

T. Alaqeel, S. Suryanarayanan

引用次数: 4

DFIG based wind turbine system modeling in the Real Time Digital Simulator 基于DFIG的实时数字模拟器风电系统建模

2014 North American Power Symposium (NAPS) Pub Date : 2014-11-24 DOI: 10.1109/NAPS.2014.6965420

R. Jain, H. Hess, B. Johnson

引用次数: 3

Software development of optimal substation ground grid design based on genetic algorithm and pattern search 基于遗传算法和模式搜索的变电站地网优化设计软件开发

2014 North American Power Symposium (NAPS) Pub Date : 2014-11-24 DOI: 10.1109/NAPS.2014.6965440

Qianzhi Zhang, Xuan Wu

{"title":"Software development of optimal substation ground grid design based on genetic algorithm and pattern search","authors":"Qianzhi Zhang, Xuan Wu","doi":"10.1109/NAPS.2014.6965440","DOIUrl":"https://doi.org/10.1109/NAPS.2014.6965440","url":null,"abstract":"Substation ground system serves to safety of personnel and as major equipment during earth faults, which deserves considerable attentions. Basic substation safety assessment quantities include ground grid resistance, mesh touch potential and step potential, moreover, optimal design of substation ground system should consider both safeness and cost. To fill the lack of such suitable and economical optimal design software in North American industry, a software package coded in MATLAB is developed and its core algorithm and main features are introduced in this paper. A novel hybrid GA-PS optimization or two-steps optimization method is developed, in which Genetic Algorithm (GA) is used firstly to search an approximate start point range for the further optimal searching, followed by Pattern Search (PS) to find the final optimal result. This software can give analysis of ground grid safety performance and is able to recommend optimal grid design for given safety constraints. In order to make sure the accuracy of this software, the results of grid safety assessment obtained here are also compared with the results calculated by using worldwide used software WinIGS.","PeriodicalId":421766,"journal":{"name":"2014 North American Power Symposium (NAPS)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121525802","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

Short term electrical load forecasting using back propagation neural networks 基于反向传播神经网络的短期电力负荷预测

2014 North American Power Symposium (NAPS) Pub Date : 2014-11-24 DOI: 10.1109/NAPS.2014.6965453

S. S. Reddy, J. Momoh

引用次数: 34

An efficient primal-dual approach to chance-constrained economic dispatch 机会约束经济调度的一种有效的原对偶方法

2014 North American Power Symposium (NAPS) Pub Date : 2014-10-17 DOI: 10.1109/NAPS.2014.6965379

G. Martinez, Yu Zhang, G. Giannakis

引用次数: 8