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2019 20th International Conference on Intelligent System Application to Power Systems (ISAP)最新文献

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Air Conditioning Consumption Optimization Based on CO2 Concentration Level 基于CO2浓度水平的空调能耗优化
Mahsa Khorram, Modar Zheiry, P. Faria, Z. Vale
Nowadays, energy consumption increasing is a big concern for many countries around the world. Disadvantages and consequences of fossil fuels for the environment caused a lot of efforts to invest in renewable energy resources and programs to optimize energy consumption. All types of buildings are the major consumers of electric power. Therefore, buildings can be considered as good options for implementing optimization algorithms, assuming that they are equipped to required infrastructures. Air conditioners are flexible loads that can be directly controlled by optimization programs. This paper presents a particle swarm optimization algorithm to minimize the power consumption of the air conditioners based on the carbon dioxide concentration level. The algorithm considers the thermal comfort of users with defining restrictions. The case study of the paper proposes two scenarios with real monitored data of a building. The result of the paper shows the obtained results of the algorithm and makes the comparison of two scenarios.
如今,能源消耗的增加是世界上许多国家关注的一个大问题。化石燃料对环境的缺点和后果导致了许多努力投资于可再生能源资源和优化能源消耗的计划。所有类型的建筑物都是电力的主要消费者。因此,如果建筑物配备了所需的基础设施,则可以将其视为实施优化算法的良好选择。空调是柔性负荷,可通过优化程序直接控制。提出了一种基于二氧化碳浓度水平的粒子群优化算法,以实现空调功耗的最小化。该算法考虑了用户的热舒适性,并定义了限制条件。本文的案例研究提出了两种具有建筑物真实监控数据的场景。论文的结果展示了算法得到的结果,并对两种场景进行了比较。
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引用次数: 2
Islanding detection in a distribution system: A pattern assessment based approach using Concordia analysis 配电系统孤岛检测:基于模式评估的康考迪亚分析方法
S. Dutta, Shailesh Verma, P. Sadhu, M. J. B. Reddy, D. Mohanta
Distributed generation (DG) has acquired lots of importance in power industry in recent times. Integration of DGs helps in improving power quality, meeting high demand and maintaining smooth power grid operation. However, incorporation of DGs create complexity in power system protection schemes, such as unintentional islanding. Unintentional islanding has serious consequences on the serviceability and protection of the grid. The proposed methodology is based on voltage measurement directly from a micro-phasor measurement unit ($mutext{PMU}$) and performing Concordia analysis on these signals. Through the technique, it is assessed whether a disturbance occurred at the point of common coupling (PCC) is due to fault or an islanding operation. Various MATLAB simulations are performed using the proposed algorithm to justify its efficiency. Such events are performed on a doubly-fed induction generator (DFIG) based micro-grid.
近年来,分布式发电在电力工业中得到了越来越多的重视。dg的集成有助于提高电能质量,满足高需求,保持电网平稳运行。然而,dg的加入给电力系统保护方案带来了复杂性,例如意外孤岛。非故意孤岛对电网的可用性和保护造成严重后果。所提出的方法是基于直接从微相量测量单元($mutext{PMU}$)进行电压测量,并对这些信号进行Concordia分析。通过该技术,可以评估在共耦合点(PCC)发生的扰动是由于故障还是由于孤岛操作。使用该算法进行了各种MATLAB仿真,以证明其有效性。这些事件在基于双馈感应发电机(DFIG)的微电网上进行。
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引用次数: 1
Forecasting Power Consumption of IT Devices in a Data Center 数据中心IT设备功耗预测
Mehmet Türker Takcı, T. Gözel, M. H. Hocaoğlu
In recent years, estimation algorithms become more popular in terms of forecasting customer behavior or any required data for IT companies. Forecasting results can be used in different purposes such as improving the quality and capacity of production and services, reducing to greenhouse gas emissions, and minimizing the power consumption. The accurate forecasting results are also beneficial for data centers which are the significant participants in the electricity market in terms of consuming huge power demand and have a chance to reduce consumed power, electricity costs by rescheduling their flexible loads for the future period. In this paper, power-consuming devices and variables affecting power consumption are explained. Also, the brief information about artificial neural network and regression analysis methods has been provided. The power consumption of Information Technology devices is forecasted by nonlinear regression analysis and artificial neural network methods. The forecasting results show that artificial neural network method is more successful.
近年来,估计算法在预测客户行为或IT公司所需的任何数据方面变得越来越流行。预测结果可用于不同的目的,如提高生产和服务的质量和能力,减少温室气体排放,并尽量减少电力消耗。准确的预测结果也有利于数据中心作为电力市场的重要参与者,在消耗巨大的电力需求方面,并有机会通过在未来一段时间内重新安排其灵活的负载来降低消耗的电力,电力成本。本文对功耗器件和影响功耗的变量进行了说明。同时,简要介绍了人工神经网络和回归分析方法。采用非线性回归分析和人工神经网络方法对信息技术设备的功耗进行了预测。预测结果表明,人工神经网络方法较为成功。
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引用次数: 2
Scheduling of EV Charging Station for Demand Response Support to Utility 基于需求响应支持的电动汽车充电站调度
Praneeth M V S S R, C. T. S, P. Yemula
World's transportation system is transforming from conventional gasoline vehicles to electric vehicles. According to Bloomberg electric vehicle outlook 2019 report. During the year 2018, around 2 million electric vehicles are sold. Also, it is expected that approximately 30% of total passenger vehicles will be electric by 2040. This growth in electric vehicles will increase the demand on the grid. For this demand, the utility grid has to go for an increase in the generation or use demand response strategy. With the evolution of demand response and prosumer in the smart grid era, the electric vehicle charging station owner has to schedule his cars for charging. The objective of this paper is to schedule the electric vehicles for charging based on price and solar availability, discharging based on the grid requirement. For this objective, we propose an algorithm called charging station demand response management system (CS-DRMS). Since the charging station owner is participating in demand response and utilizing full solar capability, it is evident that we achieve the profit maximization of the charging station owner. For validation, we discuss the results by simulating the algorithm using MATLAB programming.
世界交通运输系统正在从传统的汽油汽车向电动汽车转变。根据彭博社2019年电动汽车展望报告。2018年,电动汽车销量约为200万辆。此外,预计到2040年,电动汽车将占乘用车总量的30%左右。电动汽车的增长将增加对电网的需求。对于这种需求,公用电网必须增加发电量或使用需求响应策略。随着智能电网时代需求响应和产消的演变,电动汽车充电站车主需要对自己的汽车进行充电调度。本文的目标是根据价格和太阳能可用性来安排电动汽车充电,根据电网要求放电。为此,我们提出了充电站需求响应管理系统(CS-DRMS)算法。由于充电站所有者参与了需求响应并充分利用了太阳能发电能力,显然我们实现了充电站所有者的利润最大化。为了验证,我们使用MATLAB编程对算法进行了仿真。
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引用次数: 0
Optimal allocation of multi-type distributed generators for minimization of power losses in distribution systems 多型分布式发电机的优化配置,使配电系统的功率损耗最小
B. Ahmadi, O. Ceylan, A. Ozdemir
Distributed generation (DG), including photovoltaics (PVs), wind turbines (WTs) are becoming vital for Active Distribution Networks (ADN). Therefore, optimal sizing and allocation of these units can improve voltage profiles and reduce active power losses. This study concentrates on optimal allocation and sizing of two kinds of DG units (PVs and WTs) with 1 MW maximum size limits, due to the regulations in Turkey. The Whale optimization algorithm (WOA) and Grey wolf optimization algorithm (GWO) are used as optimization tools to minimize active power losses of 33 and 69 Bus Test Systems. The performance analysis of the methods are performed through simulations and the numerical results are compared in terms of optimal OF values and convergence characteristics.
分布式发电(DG),包括光伏发电(pv)、风力涡轮机(WTs),对有源配电网(ADN)至关重要。因此,优化这些单元的尺寸和分配可以改善电压分布并减少有功功率损耗。由于土耳其的规定,本研究集中于两种DG机组(pv和WTs)的最佳分配和尺寸,最大尺寸限制为1mw。采用Whale优化算法(WOA)和灰狼优化算法(GWO)作为优化工具,使33和69母线测试系统的有功功率损耗最小化。通过仿真对方法进行了性能分析,并从最优of值和收敛特性两方面对数值结果进行了比较。
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引用次数: 9
Boost Power Factor Correction Converter fed Domestic Induction Heating System 家用感应加热系统的升压功率因数校正变换器
Anand Kumar, Debayan Sarkar, P. Sadhu
Unique advantages of induction heating (IH) technology in terms of efficiency and performance has increased its endorsement in industrial along with domestic applications. Owing to this, the usage of IH technology for domestic cooking is being increased and the increasing application of this technology is leading to power quality issue in terms of THD, low power factor problem and electromagnetic interference (EMI) effect. In order to mitigate these issues, in this paper a domestic IH system has been designed using boost power factor correction (BPFC) converter which acts as a front end converter. The BPFC converter corrects the input power factor (PF) as well as regulates the DC link voltage. This DC link voltage is fed to the full bridge series resonant inverter (FB-SRI) which generates high frequency AC which is the need of domestic IH system. A 2.2 kW domestic IH system has been designed and validated through the Power simulation (PSIM) software.
感应加热(IH)技术在效率和性能方面的独特优势已经增加了它在工业和家庭应用中的认可。因此,IH技术在家庭烹饪中的使用正在增加,该技术的应用越来越多,导致了THD,低功率因数问题和电磁干扰(EMI)效应方面的电能质量问题。为了解决这些问题,本文采用升压功率因数校正(BPFC)变换器作为前端变换器,设计了一种国产IH系统。BPFC转换器校正输入功率因数(PF)以及调节直流链路电压。该直流链路电压被馈送到全桥串联谐振逆变器(FB-SRI),该逆变器产生高频交流,这是国内IH系统的需要。设计了一套2.2 kW的家用IH系统,并通过功率仿真(PSIM)软件进行了验证。
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引用次数: 0
Real-Time Approach for Demand Response Tariffs Definition Using Decision Trees 基于决策树的需求响应电价实时定义方法
C. Silva, P. Faria, Z. Vale
Giving the small resources more information about the transactions in the market will have a great influence on the balance and increase the uncertainty. Business models that are prepared to deal with small consumers and/or with small Distributed Generation units need to emerge to deal with this problem. The authors present a methodology able to minimize the operation costs for the Aggregator of these small resources but also find a fair remuneration according to their participation in the management of the local grid. The methodology could be explored by two approaches depending on time horizon: planning or operation. In the present paper, the two will be compared showing the viability of the path selected by the authors for the real-time approach - assign a remuneration group to a consumer considering the actual participation and the rules provided by a classification method.
向小资源提供更多的市场交易信息会对平衡产生很大的影响,增加不确定性。准备好处理小型消费者和/或小型分布式发电单元的业务模型需要出现来处理这个问题。作者提出了一种方法,既可以使这些小资源的聚合器的运行成本最小化,又可以根据它们参与本地电网管理的程度获得公平的报酬。该方法可根据时间范围采用两种方法:规划或操作。在本文中,两者将进行比较,显示作者为实时方法选择的路径的可行性-考虑到实际参与和分类方法提供的规则,为消费者分配报酬组。
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引用次数: 0
Revisit Neural Network based Load Forecasting 重温基于神经网络的负荷预测
Yingshan Tao, Fei Zhao, Haoliang Yuan, Chun Sing Lai, Zhao Xu, Wing W. Y. Ng, Rongwei Li, Xuecong Li, L. Lai
The application of artificial neural network to load forecasting can overcome the problem of dynamic load change, and its ability to adapt to nonlinear relationships makes the prediction result satisfactory. This paper firstly reviews and introduces the concepts and basic principles of load prediction, discusses various methods for load forecasting, and then selects artificial neural network to establish a predictive model. In this paper, the European electric load is predicted with a BP neural network. From the prediction results, it is feasible to use BP neural network for load forecasting, and its accuracy can meet the needs of real-life engineering work. However, BP neural networks have the problem of slow convergence and easily falling into local minimum points. Therefore, this paper also uses three other neural networks for load forecasting, which are Radial Basis Network (RBF), Elman Network, and Long-Short Term Memory Network (LSTM). In the experiment, the four neural networks achieved expected prediction results, and the LSTM network had the best prediction effect. Scientific discussions are offered.
将人工神经网络应用于负荷预测,可以克服负荷动态变化的问题,并且其对非线性关系的适应能力使预测结果令人满意。本文首先回顾和介绍了负荷预测的概念和基本原理,讨论了负荷预测的各种方法,然后选择人工神经网络建立了负荷预测模型。本文采用BP神经网络对欧洲电力负荷进行了预测。从预测结果来看,利用BP神经网络进行负荷预测是可行的,其精度可以满足实际工程工作的需要。然而,BP神经网络存在收敛速度慢、容易陷入局部极小点的问题。因此,本文还采用了另外三种神经网络进行负荷预测,分别是径向基网络(RBF)、Elman网络和长短期记忆网络(LSTM)。在实验中,四种神经网络都取得了预期的预测结果,其中LSTM网络的预测效果最好。提供科学的讨论。
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引用次数: 0
Voltage Control Using Smart Transformer for Increasing Photovoltaic Penetration in a Distribution Grid 利用智能变压器进行电压控制以提高光伏在配电网中的渗透率
R. Manojkumar, H. V M, Chandan Kumar, S. Ganguly
Uncertainty and variation of power generation through photovoltaic (PV) sources are major challenges for their integration with the distribution grid. Voltage rise and voltage drop issues limit the increase in PV penetration and loading level, respectively. It is important to maintain voltage levels within specified limits of grid code for providing long life, more efficiency, and good performance of consumer equipment while ensuring that the PV power generation is not curtailed. In this paper, a voltage control method for the smart transformer (ST) is proposed to improve voltage profile in the distribution network. Voltage control capability for ST is added through the method of switching among three setpoints based on the voltage. The proposed method is compared with the conventional method of switching between two setpoints based on current. The proposed method provides better voltage profile in the distribution network as compared to conventional method. Performance indicators are developed to understand the impact of voltage control methods on the system voltage profile. Proposed voltage control method is tested on a CIGRE low voltage residential distribution network.
光伏发电的不确定性和变化是其与配电网整合的主要挑战。电压上升和电压下降问题分别限制了光伏渗透和负载水平的增加。在确保光伏发电不被削减的同时,将电压水平保持在电网规范规定的范围内是很重要的,这样才能提供更长的使用寿命、更高的效率和良好的性能。本文提出了一种用于智能变压器的电压控制方法,以改善配电网中的电压分布。通过基于电压在三个设定值之间切换的方法,增加了ST的电压控制能力。将该方法与传统的基于电流的两个设定值切换方法进行了比较。与传统方法相比,该方法在配电网中提供了更好的电压分布。开发性能指标是为了了解电压控制方法对系统电压分布的影响。在CIGRE低压居民配电网上对所提出的电压控制方法进行了试验。
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引用次数: 4
Energy Resource Scheduling in an Agriculture System Using a Decision Tree Approach 基于决策树方法的农业系统能源调度
Omid Abrishambaf, P. Faria, Z. Vale
Agriculture sector is backbone of each country. Nowadays the energy efficiency in this sector is at a very low level, which shows the necessity of more investments in this regard. By appearance of smart grid technologies, some new concepts were also appeared in the agriculture sector, such as smart farm, and smart agriculture. This paper provides an energy management system for an agriculture field equipped with renewable energy resources and a river turbine. A decision tree is developed in this paper to schedule and optimize the use of energy resources for reducing the electricity costs. Decision tree method enables the system to obtain optimal scheduling of energy resources in offline mode, without using any external server/machine or internet access. A case study validates the performance of developed decision tree, and the errors and accuracy of all gained results are discussed.
农业是每个国家的支柱。目前,该行业的能源效率处于非常低的水平,这表明在这方面需要更多的投资。随着智能电网技术的出现,农业领域也出现了一些新的概念,如智能农场、智能农业等。本文提出了一种可再生能源与水轮机配套的农田能源管理系统。为了降低电力成本,本文建立了一种决策树来调度和优化能源的使用。决策树方法使系统在不使用任何外部服务器/机器、不接入互联网的情况下,实现离线模式下能源资源的最优调度。通过实例验证了所建立的决策树的性能,并讨论了所得结果的误差和准确性。
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引用次数: 5
期刊
2019 20th International Conference on Intelligent System Application to Power Systems (ISAP)
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