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

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Multi-Step Load Demand Forecasting Using Neural Network 基于神经网络的多步负荷需求预测
Sonu Jha, C. L. Dewangan, N. Verma
The accuracy of load demand forecasting plays a vital role in economic operation and planning in the power sector. Therefore, many techniques and approaches have been proposed in the literature for forecasting. However, there is still an essential need to develop more accurate load forecast method. In this paper, three different strategies of Multi-Step-Ahead Load Forecasting (MSALF), i.e. Direct Strategy (DS), Recursive Strategy (RS) and DirRec Strategy (Direct-Recursive Strategy or DRS) have been used for electricity load demand forecasting by using the Artificial Neural Network (ANN) with Levenberg-Marquardt (LM) training algorithm. The performance evaluation for three different strategies of MSALF has been analysed on two different substations of NE-ISO data sets. Each data sets is analysed for four different cases. The performance of the DRS is better than DS and RS.
负荷需求预测的准确性对电力部门的经济运行和规划具有至关重要的作用。因此,文献中提出了许多预测技术和方法。然而,目前仍急需开发更准确的负荷预测方法。本文采用基于Levenberg-Marquardt (LM)训练算法的人工神经网络(ANN),采用直接策略(DS)、递归策略(RS)和直接递归策略(DRS)三种不同的多步超前负荷预测(MSALF)策略进行电力负荷需求预测。在NE-ISO数据集的两个不同变电站上,分析了MSALF三种不同策略的性能评价。每个数据集针对四种不同的情况进行分析。DRS的性能优于DS和RS。
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引用次数: 1
A Hierarchical Scheme for Voltage and Reactive Power Control with Predator-Prey Brain Storm Optimization 基于“捕食者-猎物”头脑风暴优化的电压和无功控制分层方案
Shota Ogawa, H. Mori
This paper proposes a new method for hierarchical Voltage and Reactive Power Control (VQC) with Predator-Prey Brain Storm Optimization (PPBSO) of high performance evolutionary computation. The objective of VQC is to maintain nodal voltage profiles within certain bounds. Recently, the penetration of renewables has been widely spread in power systems, which has brought about large fluctuations on nodal voltage and system frequency due to weather-dependable generation output. In this paper, an efficient VQC method is proposed with three strategies, i.e., hierarchical optimization, PPBSO and parallel computation of OpenMP. The proposed method is tested in the IEEE 57-node system.
提出了一种基于高性能进化计算的“捕食者-猎物”头脑风暴优化(PPBSO)的电压无功分层控制(VQC)新方法。VQC的目标是将节点电压分布保持在一定范围内。近年来,可再生能源在电力系统中的普及程度越来越高,由于发电出力不可靠,导致节点电压和系统频率出现较大波动。本文采用层次优化、PPBSO和OpenMP并行计算三种策略,提出了一种高效的VQC方法。该方法在IEEE 57节点系统中进行了测试。
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引用次数: 1
Optimal Parameter Tuning of Power Oscillation Damper by MHHO Algorithm 基于MHHO算法的功率振荡阻尼器参数优化整定
R. Devarapalli, B. Bhattacharyya
This paper describes the damping nature offered by power system stabilizer (PSS) and static synchronous compensator (STATCOM) under system perturbations. The parameters of the damping devices are obtained from the novel natural inspired Harris hawks algorithm (HHA). Further, the modified version of Harris hawks algorithm is proposed with logarithmic function for escaping energy of prey for better damping characteristics for the system states. The damping natured offered to the system states under perturbations and eigenvalues of the system are analyzed with the proposed technique. The system study is conducted for different loading conditions, and the proposed algorithm is compared with state-of-the-art algorithms, namely, grey wolf optimization, and moth flame optimization. The control action offered by STATCOM and PSS also investigated for the coordinated operation during different system operating conditions.
本文研究了电力系统稳定器(PSS)和静态同步补偿器(STATCOM)在系统扰动下的阻尼特性。阻尼装置的参数由一种新颖的自然启发哈里斯鹰算法(HHA)获得。在此基础上,提出了改进的Harris hawks算法,并引入了猎物逃逸能量的对数函数,以获得更好的系统状态阻尼特性。利用该方法分析了扰动作用下系统状态的阻尼特性和系统的特征值。针对不同的加载条件进行了系统研究,并将提出的算法与目前最先进的算法灰狼优化、蛾焰优化进行了比较。研究了STATCOM和PSS在不同系统运行条件下的协同运行控制作用。
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引用次数: 17
A novel I-PDF controller for LFC with AC/DC Tie-line 一种新型交/直流联络线LFC I-PDF控制器
Abhineet Prakash, Kundan Kumar, S. Parida
This paper deals with the LFC (load frequency control) of two area power system. The two areas comprise of thermal-gas and thermal-hydro system. Later the standalone wind turbine system (WTS) is incorporated in area-1 and its variability impact on power system dynamics is studied. As HVDC tie-lines are considered as DC capacitors, this paper utilizes stored energy in HVDC tie-line to surpass the system dynamic performances. For that purpose, a virtual inertia based capacitive energy storage (CES) is incorporated in the system. The overall system is investigated in the presence of proportional (P)-integral (I)-derivative (D) controller with filter (F) i.e. PIDF controller and new I-PDF controller. To optimize the controller gains a metaheuristic Sine Cosine Algorithm (SCA) technique is adopted. Further sensitivity analysis is performed by variation in system parameters like thermal turbine and reheat turbine time constant to analyze the robustness of SCA based I-PDF controller.
本文研究了两区电力系统的负荷频率控制问题。这两个区域包括热燃气和热水力系统。随后将单机风力发电系统(WTS)纳入area-1,研究其变率对电力系统动力学的影响。由于高压直流联络线被视为直流电容器,本文利用高压直流联络线中存储的能量来超越系统的动态性能。为此,在系统中加入了基于虚拟惯性的电容储能(CES)。在带滤波器(F)的比例(P)-积分(I)-导数(D)控制器即PIDF控制器和新型I- pdf控制器的存在下,研究了整个系统。为了优化控制器增益,采用了元启发式正弦余弦算法(SCA)。通过对汽轮机、再热汽轮机时间常数等系统参数的变化进行灵敏度分析,分析基于SCA的I-PDF控制器的鲁棒性。
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引用次数: 3
Detection of Boiler Tube Leakage Fault in a Thermal Power Plant Using K-means Algorithm based on Auto-Associative Neural Network 基于自关联神经网络的k均值算法在火电厂锅炉管泄漏故障检测中的应用
Kyu han Kim, Heung-seok Lee, Juneho Park
The fault detection system using K-means algorithm based on Auto-Associative Neural Network (AANN) is proposed for boiler tube leakage in a thermal power plant. The normal operation state of the power plant is modeled using the AANN proposed by Kramer among various neural network techniques. The difference between the normal operation state estimation value which is the output of the model and the actual value of the main variables related to the fault is called residual. Using the residuals and residual variation of each variable, the fault detection system of boiler tube leakage is implemented. Finally, the actual fault cases of the boiler tube leakage are applied to verify the possibility of fault detection.
提出了一种基于自关联神经网络(AANN)的k均值算法的火电厂锅炉管泄漏故障检测系统。在各种神经网络技术中,采用Kramer提出的AANN对电厂的正常运行状态进行建模。模型输出的正常运行状态估计值与与故障相关的主要变量的实际值之间的差称为残差。利用各变量的残差和残差变化量,实现了锅炉管道泄漏故障检测系统。最后,结合锅炉管漏的实际故障案例,验证了故障检测的可能性。
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引用次数: 1
CO2 Concentration Forecasting in an Office Using Artificial Neural Network 基于人工神经网络的办公室二氧化碳浓度预测
Mahsa Khorram, P. Faria, Omid Abrishambaf, Z. Vale, J. Soares
Uncertainty is the state of all operation, components, and objective environment that makes impossible to describe the existing state. Forecasting techniques are essential in the field of knowledge development to overcome the uncertainty to increase the efficiency of all systems. In this paper, artificial neural network algorithm is applied to forecast the CO2 concentration in an office building. The algorithm is implemented in Rstudio software using neural net package. The case study of the paper presents two scenarios with different input data to propose the impacts of train data on forecasting algorithms results. The used dataset in the case study is real data that have been monitored for 2 years. The obtained results of algorithms show the predicted values of CO2 concentration in one office for 600 minutes of a working day. The mean percentage error means absolute percentage error, and standard deviation of predicted data for both scenarios are presented in results section.
不确定性是所有操作、组件和客观环境的状态,使得不可能描述现有状态。在知识发展领域,预测技术是克服不确定性以提高所有系统效率的必要手段。本文采用人工神经网络算法对某办公楼的CO2浓度进行预测。该算法在Rstudio软件中使用神经网络包实现。本文以两种不同输入数据的场景为例,提出了列车数据对预测算法结果的影响。案例研究中使用的数据集是监测了2年的真实数据。算法得到的结果显示了一个办公室在一个工作日600分钟内的二氧化碳浓度预测值。平均百分比误差表示绝对百分比误差,两种情景的预测数据的标准差在结果部分给出。
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引用次数: 3
Hybrid Intelligence Techniques for Unit Commitment of Microgrids 微电网机组调度的混合智能技术
B. Dey, B. Bhattacharyya
Optimal scheduling of the distributed generation (DG) sources for a microgrid is very essential for the economical and a balanced load sharing operation of the same. Various classical and evolutionary optimization techniques are being used to solve this scheduling problem. This paper deals in performing energy management of a rural microgrid test system using hybrids of Grey wolf optimizer (GWO). GWO is first modified (MGWO) as mentioned in literature. Further MGWO is amalgamated with sine cosine algorithm (SCA), particle swarm optimization (PSO) and crow search algorithm (CSA) to perform the optimization. All of numerical results, pictorial and statistical data point towards the superiority of the proposed MGWOPSO among the four other optimizers used.
微电网分布式发电源的优化调度对微电网的经济、均衡负荷共享运行至关重要。各种经典的和进化的优化技术被用来解决这个调度问题。本文研究了利用混合灰狼优化器(GWO)对农村微电网测试系统进行能量管理。GWO是文献中提到的第一次修改(MGWO)。在此基础上,结合正弦余弦算法(SCA)、粒子群算法(PSO)和乌鸦搜索算法(CSA)进行优化。所有的数值结果、图像和统计数据都表明了所提出的MGWOPSO在使用的其他四种优化器中具有优越性。
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引用次数: 6
Optimal Bidding in Local Energy Markets using Evolutionary Computation 基于进化计算的局部能源市场最优竞价
F. Lezama, J. Soares, Z. Vale
Increased adoption of distributed resources and renewables in distribution networks has led to a significant interest in local energy transactions at lower levels of the energy supply chain. Local energy markets (LM) are expected to play a crucial part in guaranteeing the balance between generation and consumption and contribute to the reduction of carbon emissions. Besides, LMs aim at increasing the participation of small end-users in energy transactions, setting the stage for transactive energy systems. In this work, we explore the use of evolutionary algorithms (EAs) to solve a bi-level optimization problem that arises when trading energy in an LM. We compare the performance of different EAs under a realistic case study with nine agents trading energy in the day-ahead LM. Results suggest that EAs can provide solutions in which all agents can improve their profits. It is shown the advantages in terms of profits that an LM can bring to market participants, thereby increasing the tolerable penetration of renewable resources and facilitating the energy transition.
分布式资源和可再生能源在配电网络中的应用越来越多,这使得人们对能源供应链较低层次的本地能源交易产生了浓厚的兴趣。预计当地能源市场(LM)将在保证发电和消费之间的平衡方面发挥关键作用,并有助于减少碳排放。此外,LMs旨在增加小型终端用户对能源交易的参与,为可交易的能源系统奠定基础。在这项工作中,我们探索了使用进化算法(EAs)来解决在LM中交易能量时出现的双层优化问题。我们在一个现实的案例研究中比较了九个代理在前一天LM中交易能源的不同ea的表现。结果表明,ea可以提供所有代理商都能提高其利润的解决方案。在利润方面,LM可以为市场参与者带来优势,从而提高可再生资源的可容忍渗透率,促进能源转型。
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引用次数: 14
Recognition of Fault Location and Type in a Medium Voltage System with Distributed Generation using Machine Learning Approach 基于机器学习的分布式发电中压系统故障定位与类型识别
Adhishree Srivastava, S. Parida
This work describes a preliminary research investigation to access the feasibility of using advanced machine learning techniques for predicting and diagnosing fault type and fault location in a power distribution network consisting distributed generation. The proposed approach uses three phase voltage and current measurements data, assumed to be available at all the source bus. To understand the potential of the machine learning methodology, practical scenarios in a distribution grid such as all types of faults i.e. SLG, LLG, LL, and LLL with different fault locations are addressed in this work. Initially, the fault data is generated which is used to train a fault locator module. Further same data is used to design a fault type detector model in offline mode. The online real time data when fed to these models are able to give exact location and type of fault. The results are obtained from seven techniques of machine learning and their comparison is also done. The approach is proved to be a feasible tool for fault analysis.
这项工作描述了一项初步的研究调查,以访问使用先进的机器学习技术来预测和诊断配电网络中包含分布式发电的故障类型和故障定位的可行性。所提出的方法使用三相电压和电流测量数据,假设在所有源总线上都可用。为了了解机器学习方法的潜力,本工作解决了配电网中的实际场景,例如所有类型的故障,即SLG, LLG, LL和LLL具有不同的故障位置。首先,生成故障数据,用于训练故障定位模块。进一步利用相同的数据设计了离线模式下的故障类型检测器模型。将在线实时数据输入到这些模型中,可以给出准确的故障位置和类型。对7种机器学习技术的结果进行了比较。该方法是一种可行的故障分析工具。
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引用次数: 1
Differential Evolution Optimization for a Residential Demand Response Application 住宅需求响应应用的差分演化优化
Ricardo Faia, F. Lezama, P. Faria, Z. Vale
In the smart grid era, when the power system is under stress, demand response (DR) is considered a viable and practical solution for smoothing the demand curve. DR is a procedure that is applied to provide changes in consumers power consumption. These changes can be obtained by optimization techniques producing solutions for the management of power profiles of consumers. In general, optimization techniques can be divided into two groups: the exact methods and the approximate methods. In this paper, an optimization DR problem is formulated and solved using an approximate method based on evolutionary computation. The differential evolution (DE) and one variant called hybrid-adaptive DE (HyDE), as well as the Particle swarm optimization (PSO) algorithms are used and their performance is compared. The results show that DE algorithms are superior to PSO for this application and their performance is close to that obtained with an exact method.
在智能电网时代,当电力系统处于压力下时,需求响应被认为是一种可行的、实用的平滑需求曲线的解决方案。容灾是一种用于提供用户功耗变化的过程。这些变化可以通过优化技术来实现,这些技术为管理用户的功率配置文件提供了解决方案。一般来说,优化技术可以分为两类:精确方法和近似方法。本文提出了一种基于进化计算的近似方法来求解优化DR问题。采用差分进化算法(DE)和混合自适应进化算法(HyDE)以及粒子群优化算法(PSO),并对它们的性能进行了比较。结果表明,在该应用中,DE算法优于粒子群算法,其性能接近于用精确方法得到的结果。
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引用次数: 1
期刊
2019 20th International Conference on Intelligent System Application to Power Systems (ISAP)
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