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2018 IEEE PES Transmission & Distribution Conference and Exhibition - Latin America (T&D-LA)最新文献

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Social Impact Assessment on a Renewable Energy Project: A Case Study in Peru 可再生能源项目的社会影响评估:以秘鲁为例
Alexi Delgado, P. Motellanos, E. Rosario, L. Zuloaga
Some energy projects became in causes of possible social conflicts during its implantation; in this way and in order to prevent social conflicts, it should conduct a social impact assessment (SIA) before developing an energy project. In this work, we conducted a social impact assessment on a renewable energy project in Lima, Peru, by applying of the grey systems theory. In the case study, four stakeholder groups and five evaluation criteria, for SIA, were identified. Consequently, the results showed that the energy project would have a positive social impact from the point of the view affected population. In addition, the criterion more valuated by population under analysis, was the impact on the research. Moreover, the method applied in this study showed interesting results that could help to authorities from university under study and local authorities to make the best decision about the energy project. In addition, the method could be used to assess social impact from other type of energy projects.
一些能源项目在实施过程中成为可能引发社会矛盾的原因;因此,为了防止社会冲突,在开发能源项目之前应该进行社会影响评估(SIA)。本文运用灰色系统理论对秘鲁利马的一个可再生能源项目进行了社会影响评估。在案例研究中,确定了SIA的四个利益相关者群体和五个评估标准。结果表明,从受影响人群的角度来看,能源项目将产生积极的社会影响。此外,被分析人群更看重的标准是对研究的影响。此外,本研究中应用的方法显示了有趣的结果,可以帮助被研究的大学和地方当局对能源项目做出最佳决策。此外,该方法可用于评估其他类型能源项目的社会影响。
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引用次数: 0
Network reconfiguration in distribution systems to reduce harmonic distortion using Particle Swarm Optimization 基于粒子群算法的配电系统谐波重构
Laerty J. S. Damião, W. Zvietcovich, Francisco Baracho
A novel application of the meta-heuristic “Particle Swarm Optimization” is implemented in this work to solve the problem of reconfiguration of power distribution systems in the presence of non-linear loads with the objective of minimizing the total harmonic distortion. The proposed methodology is based on the behavior of a flock of birds when flying in search of food. In order to guarantee the convergence when the distribution power network is radial and large, a heuristic rule is deployed to improve the methodology efficiency. The developed algorithm was applied to the IEEE 33-bus radial system. The results demonstrate the efficiency of the proposed method to find the optimal topology of the distribution system to reduce harmonic distortion.
本文提出了一种新的启发式“粒子群优化”方法,用于解决存在非线性负荷的配电系统重构问题,其目标是使总谐波失真最小。所提出的方法是基于一群鸟在飞行中寻找食物时的行为。为了保证配电网径向大时的收敛性,采用了启发式规则,提高了算法的效率。该算法已应用于IEEE 33总线径向系统。结果表明,该方法能够有效地找到配电系统的最优拓扑结构,从而降低谐波失真。
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引用次数: 2
Simulation Study of a GPC Controller for a Hydroelectric Plant during Electric Faults 水电站电气故障时GPC控制器的仿真研究
Marcos Sacasqui, J. Luyo
This paper presents the simulation study where the classic speed controller of a hydraulic power unit has been replaced with an unrestricted generalized predictive controller. The model of the power plant includes an excitation system, subsystem (speed controller, servo motor and turbine), load 1, load 2, Three-phase Transformer, External Grid and Fault. The electric three-phase fault has 0.1 seconds of duration. The results are compared with the responses of a conventional proportional integrative and derivative controller. The library of simulation developed by MathWorks “Power-Turbine”(Simulink) and for Matlab is used, also this research includes the steps for modify the library and so adapt it for our purposes.
本文提出了用不受限制的广义预测控制器取代液压动力单元经典速度控制器的仿真研究。电厂的模型包括励磁系统、子系统(速度控制器、伺服电机和汽轮机)、负载1、负载2、三相变压器、外部电网和故障。电三相故障持续时间为0.1秒。结果与传统的比例积分微分控制器的响应进行了比较。使用了由MathWorks“Power-Turbine”(Simulink)和Matlab开发的仿真库,本研究还包括修改库的步骤,以便使其适应我们的目的。
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引用次数: 1
Establishment of the single price of natural gas for thermoelectric power plant, its influence on the marginal cost and in the electricity tariff 火电厂天然气单一价格的建立及其对边际成本和电价的影响
R. Lopez
In Peru, users of the electric service bear the burden of free declaration of natural gas price in thermoelectric generation. We will see the impact that real costs will have, making the free electric market unreal with distorted competitiveness. Situation that influences electricity rates and the incentive to promote competitiveness in the electricity sector. We will analyze the cases of the Panamericana and Rubí Photovoltaic Solar Power Plants, installed in Peru, in the Moqbegua region. We can see the impact on the Premium granted to these renewable energy plants that allowed their investment through the RER Subsidy (PRIMA). Data are adopted for the 2015–2016 tariff year in their respective bus bars.
在秘鲁,电力服务用户在热电发电中承担免费申报天然气价格的负担。我们将看到实际成本将产生的影响,使自由电力市场不真实,扭曲竞争。影响电费的情况和促进电力部门竞争力的激励措施。我们将分析在秘鲁Moqbegua地区安装的Panamericana和Rubí光伏太阳能发电厂的案例。我们可以看到,通过RER补贴(PRIMA),这些可再生能源工厂获得的溢价受到了影响。数据采用2015-2016年各自母线的关税年度数据。
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引用次数: 0
Evaluating the Effects of Climate Change on the Electricity Demand of Distribution Networks 气候变化对配电网电力需求的影响评估
Sebastián Ramírez-Sandí, J. Quirós-Tortós
Rising temperatures as a result of climate change are likely to increase the adoption of air conditioners (AC), which in turn leads to higher power demands and electric energy consumption. This paper presents a methodology to evaluate the corresponding effects of climate change in distribution networks (DNs). To assess these effects, two climate change scenarios produced by the Intergovernmental Panel on Climate Change, models for residential AC availability, and residential AC demand profiles are used. For the study, a Costa Rican network fully modeled using OpenDSS and load profiles obtained from a power utility are used. Simulation results suggest that even low penetration levels of residential AC units represent a significant part of the DN‘s energy consumption, and that increases the DN demand in hours of high temperatures. This, in turn, highlights that mitigation measures such as demand response programs are necessary to supply the rises in demand.
气候变化导致的气温上升可能会增加空调(AC)的使用,从而导致更高的电力需求和电力消耗。本文提出了一种评估气候变化对配电网相应影响的方法。为了评估这些影响,使用了政府间气候变化专门委员会制定的两种气候变化情景,住宅空调可用性模型和住宅空调需求曲线。在这项研究中,哥斯达黎加的电网完全使用OpenDSS建模,并使用了从电力公司获得的负荷概况。模拟结果表明,即使住宅交流单元的低渗透水平也代表了DN能耗的重要组成部分,并且在高温小时内增加了DN需求。这反过来又突出表明,有必要采取缓解措施,如需求响应计划,以满足需求的增长。
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引用次数: 2
A New Algorithm for Implementing Automation Process Based on Self Healing Technique 一种基于自修复技术实现自动化过程的新算法
Jonatha Revoredo L. da Fonseca, Arrhenius Vinícius da Costa Oliveira, Marcos Antônio Dias de Almeida, José Luiz da Silva Jùnior, M. F. M. Júnior
This paper presents the application of Self Healing feature in automatic reconfiguration process of a power system inserted in a real industrial plant. Supporting the automation process, a new optimization algorithm, Power Summation Reconfiguration Algorithm (PSRA), is proposed whose objective function is minimizing the amount of switching during automatic reconfiguration process. Results obtained by using optimization algorithm developed in this paper were compared to ones from Chu-Beasley Modified Genetic Algorithm (CBMGA). The comparison was made between PSRA and CBMGA using Scilab simulation environment. The algorithm developed in this paper, PSRA, requires a simpler heuristic for implementation compared to CBMGA, besides presenting the same efficiency level. Then the electrical network was modeled in the Real Time Digital Simulator (RTDS) using the PSRA to implement the Self Healing technique. Intelligent Electronic Devices (IEDs) were used to protect and control the system. Two different network communications were used between RTDS and IEDs, one with digital signal and another with GOOSE messages based on the IEC 61850 standard. The time data obtained by the two network communication are compared to show the effectiveness of the PSRA.
本文介绍了自愈特性在实际工业装置电力系统自动重构过程中的应用。为了支持自动化过程,提出了一种新的优化算法——功率求和重构算法(PSRA),其目标函数是自动重构过程中的切换量最小化。将本文提出的优化算法与Chu-Beasley改进遗传算法(CBMGA)的结果进行了比较。利用Scilab仿真环境对PSRA和CBMGA进行了比较。与CBMGA相比,本文开发的算法PSRA在提供相同的效率水平的同时,需要更简单的启发式实现。然后在实时数字模拟器(RTDS)中使用PSRA对电网络进行建模,实现自愈技术。智能电子设备(ied)用于保护和控制系统。在RTDS和ied之间使用两种不同的网络通信,一种使用数字信号,另一种使用基于IEC 61850标准的GOOSE消息。通过对两种网络通信的时间数据进行比较,验证了该方法的有效性。
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引用次数: 2
Analysis of Maintenance in Transformers Based on a Fuzzy Logic Method 基于模糊逻辑方法的变压器维修分析
Laura Rosero-Z, A. Pavas, I. Durán
In this paper, an evaluation of Power transformer assessment is developed in order to determine when maintenance is feasible from the point of view of economics and aging of the asset. For this purpose, a model of health condition and failure rate is used and then fuzzy logic method is applied for some other considerations needed to stablish the action required in the transformer along the simulation. This is a new approach for estimating the need of maintenance in a power transformer.
本文从经济和资产老化的角度出发,提出了一种电力变压器评估方法,以确定何时维修是可行的。为此,首先建立了健康状态和故障率的模型,然后采用模糊逻辑方法来确定变压器在仿真过程中需要采取的行动。这是一种估算电力变压器维修需求的新方法。
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引用次数: 8
Model Predictive Controller Applied to Optimize Energy and Water Resources in Strawberry Crops 模型预测控制器在草莓作物能源和水资源优化中的应用
Christian Vega Caicedo, John Barco Jiménez
This paper presents an automated irrigation system for strawberry crops, which the main goal is to keep soil moisture in a suitable range by making efficient use of energy and water resources. A Constrained Matricial Predictive Controller- CMPC was used because it allows projecting the behavior of moisture through a prediction horizon, estimating the perturbations and responding appropriately to them. To feed the model, evapotranspiration data from the climatological station of RAMPA research group were systematized for three years. The solution was evaluated on four scenarios with different evapotranspiration curves. The key advantage of the proposed controller is the possibility to get the minimum amount of energy and water resources necessary to achieve the control objective using an optimization scheme. The results show that the proposed controller obtains a better performance with respect to reference PID controller, widely used in this kind of applications.
本文介绍了一种草莓作物自动化灌溉系统,其主要目的是通过有效利用能源和水资源,使土壤水分保持在适当的范围内。使用约束材料预测控制器- CMPC,因为它允许通过预测范围来预测湿度的行为,估计扰动并对它们做出适当的响应。为了给模型提供数据,对RAMPA研究组3年的气候站蒸散发数据进行了系统整理。在不同蒸散曲线的4种情景下对该方案进行了评价。所提出的控制器的主要优点是可以使用优化方案获得实现控制目标所需的最小能量和水资源。结果表明,所提出的控制器比参考PID控制器具有更好的性能,在此类应用中得到了广泛的应用。
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引用次数: 0
Methodology for Overhead Line Conductor Remaining Life Aging infrastructure and asset management 架空线路导体剩余寿命老化基础设施和资产管理方法
R. Velásquez, Jennifer Vanessa Mejía Lara
Many overhead lines in South America are in the limit of degradation of their expected design life. It is therefore of interest to estimate the conditions and remaining lives of conductors in order to facilitate maintenance and replacement planning. In the coast of Perú, the humidity, sea winds, weather conditions caused by Southern pacific anticyclone are factors for the fast degradation of the overhead lines conductors by corrosion effects, due to it, the replacement of many kilometers of electric conductors requires a deep analysis, it starts with the determining condition or health, because, it requires considerable investments. This research has obtained the main characteristics for determinate the electrical and special tests needed, for a diagnosis and remaining life of these kind of assets with Health index process. The effectiveness of the assessment is measured by comparing it to a condition evaluation that is based on detailed, quantitative laboratory testing. The use of life curves for different geographical regions facilitates the process of determining remaining life. Estimated lives based on the simple and more comprehensive assessments, as well as based on chronological age, they have been compared for different geographical regions and overhead lines conductors.
南美洲的许多架空线路都处于预期设计寿命下降的极限。因此,为了便于维护和更换计划,估计导线的状况和剩余寿命是很有意义的。在Perú海岸,湿度,海风,南太平洋反气旋造成的天气条件是架空线路导体腐蚀效应快速退化的因素,由于它,更换许多公里的电力导体需要深入分析,它从确定条件或健康开始,因为,它需要相当大的投资。本研究获得了确定电气和特殊测试所需的主要特征,并对这类资产的诊断和剩余寿命进行了健康指数处理。评估的有效性是通过将其与基于详细、定量的实验室测试的条件评估进行比较来衡量的。使用不同地理区域的寿命曲线有助于确定剩余寿命的过程。根据简单和更全面的评估,以及基于实足年龄的估计寿命,对不同地理区域和架空线路导线进行了比较。
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引用次数: 13
Python Programming Language for Power System Analysis Education and Research 电力系统分析的Python编程语言教学与研究
Thiago R. Fernandes, Leonardo R. Fernandes, T. R. Ricciardi, Luis F. Ugarte, M. D. de Almeida
Due to its complexity and high dimensionality, power system analysis has always relied on numerical computation for real-time operation and planning. It is therefore of great importance that power systems engineering students have a robust understanding of computing and learn how to code. This paper discusses how Python can be an adequate programming language for education and research on power system analysis. This is accomplished by the analysis of a power transmission system from the perspectives of: (i) formation of bus admittance matrix, (ii) state estimation and (iii) fault studies. For each example, a simple vectorized Python 3 code, along with its basic concepts and functions highlighted, is presented. Additionally, the main results of interest are plotted to show the ability of Python in producing publication quality 2D and 3D plots.
电力系统分析由于其复杂性和高维性,一直依赖于数值计算进行实时运行和规划。因此,电力系统工程专业的学生对计算有一个扎实的理解并学习如何编码是非常重要的。本文讨论了Python如何成为一种适合电力系统分析教育和研究的编程语言。这是通过从以下几个方面对输电系统进行分析来完成的:(i)母线导纳矩阵的形成,(ii)状态估计和(iii)故障研究。对于每个示例,都提供了一个简单的向量化Python 3代码,以及突出显示的基本概念和函数。此外,绘制了感兴趣的主要结果,以显示Python在生成出版质量的2D和3D图表方面的能力。
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引用次数: 17
期刊
2018 IEEE PES Transmission & Distribution Conference and Exhibition - Latin America (T&D-LA)
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