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A novel power aware smart agriculture management system based on RNN-LSTM 基于 RNN-LSTM 的新型电力感知智能农业管理系统
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-16 DOI: 10.1007/s00202-024-02640-0
Anburaj Balasubramanian, Srie Vidhya Janani Elangeswaran

In the realm of economics, agriculture holds supreme importance. The Internet of Things (IoT) is now pivotal in agriculture, aiding farmers in monitoring crop yield. Smart meters and control methods streamline agricultural operations, managing intelligent equipment, bidirectional communication, and user interaction. Data from sensors capturing soil and environmental parameters like moisture, humidity and temperature are integrated into Neural Networks for predictive analysis. Water scarcity, irrigation, and electrical power utilization creates impact on global crop growth and quality. This paper introduces an IoT-enabled product for coconut farming, enabling real-time monitoring and control of irrigation, energy usage, and power quality. The Smart Agriculture Irrigation Management System (AIMS) monitors valves, pumps, water levels, soil, and environmental conditions autonomously. Users can implement automated or manual decision-making processes. Additionally, a Smart Agriculture Energy Management System with integrated Smart Agriculture Energy Meter monitors power consumption, Power Quality, anomalies, and disturbances, notifying farmers via cloud services with predicted values. Implemented in a coconut farm in Sirumalai, Tamil Nadu, India, the system aims to reduce manual stress, enhancing productivity, yield, and water saving by over 30%. Predicted energy consumption patterns and tariffs help farmers avoid excessive costs, resulting in around 40% energy savings, facilitated by the superior performance of RNN-LSTM model over traditional methods.

在经济领域,农业具有至高无上的重要性。物联网(IoT)如今在农业领域举足轻重,可帮助农民监测作物产量。智能仪表和控制方法可简化农业操作,管理智能设备、双向通信和用户互动。传感器采集的土壤和环境参数(如湿度、湿度和温度)数据被整合到神经网络中进行预测分析。水资源短缺、灌溉和电力利用对全球作物生长和质量造成了影响。本文介绍了一种用于椰子种植的物联网产品,可对灌溉、能源使用和电能质量进行实时监测和控制。智能农业灌溉管理系统(AIMS)可自主监控阀门、水泵、水位、土壤和环境条件。用户可以实施自动或手动决策过程。此外,智能农业能源管理系统还集成了智能农业能源计量表,可监控耗电量、电能质量、异常情况和干扰,并通过云服务将预测值通知农民。该系统在印度泰米尔纳德邦 Sirumalai 的一个椰子农场实施,旨在减少人工压力,提高生产率和产量,并节水 30% 以上。由于 RNN-LSTM 模型的性能优于传统方法,预测的能源消耗模式和费率可帮助农民避免过高的成本,从而节省约 40% 的能源。
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引用次数: 0
Wind power forecasting using a GRU attention model for efficient energy management systems 利用 GRU 注意力模型预测风力发电量,实现高效能源管理系统
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-15 DOI: 10.1007/s00202-024-02590-7
Lakhdar Nadjib Boucetta, Youssouf Amrane, Saliha Arezki

Modern energy management systems play a crucial role in integrating multiple renewable energy sources into electricity grids, enabling a balanced supply–demand relationship while promoting eco-friendly energy consumption. Among these renewables, wind energy, with its environmental and economic advantages, poses challenges due to its inherent variability, demanding accurate prediction models for seamless integration. This paper presents an innovative hybrid deep learning model that integrates a gated recurrent unit (GRU)-based attention mechanism neural network for wind power generation forecast. The developed model’s performance is compared against six other models, comprising four deep learning approaches—long short-term memory (LSTM), 1D convolutional neural network, convolutional neural short-term memory (CNN-LSTM), and convolutional long short-term memory (ConvLSTM)—as well as two machine learning models—random forest and support vector regression. The proposed GRU-based attention model demonstrates superior performance, particularly in 1-step to 3-step ahead predictions, with mean absolute error values of 59.45, 114.95, and 176.06, root mean square error values of 109.03, 201.83, and 296.55, normalized root mean square error values of 0.080, 0.148, and 0.218, and coefficient of determination (R2) values of 0.992, 0.975, and 0.948, for forecast horizons of 10, 20, and 30 min, respectively. These results underscore the robust predictive capability of the proposed algorithm. Significantly, this research constitutes the first application of the hybrid GRU-based attention model to the Yalova wind turbine dataset, achieving better accuracy when compared to prior studies utilizing the same data.

现代能源管理系统在将多种可再生能源并入电网方面发挥着至关重要的作用,在促进生态友好型能源消费的同时,实现了供需平衡。在这些可再生能源中,风能具有环境和经济优势,但由于其固有的可变性,需要精确的预测模型才能实现无缝集成,因此带来了挑战。本文提出了一种创新的混合深度学习模型,该模型集成了基于门控递归单元(GRU)的注意力机制神经网络,用于风力发电预测。该模型的性能与其他六种模型进行了比较,包括四种深度学习方法--长短期记忆(LSTM)、一维卷积神经网络、卷积神经短期记忆(CNN-LSTM)和卷积长短期记忆(ConvLSTM),以及两种机器学习模型--随机森林和支持向量回归。所提出的基于 GRU 的注意力模型表现出了卓越的性能,尤其是在 1 步到 3 步的超前预测中,平均绝对误差值分别为 59.45、114.95 和 176.06,均方根误差值分别为 109.03、201.83 和 296.55,归一化均方根误差值分别为 0.080、0.148 和 0.218,决定系数 (R2) 分别为 0.992、0.975 和 0.948,预测时间跨度分别为 10、20 和 30 分钟。这些结果凸显了拟议算法的强大预测能力。值得注意的是,这项研究是基于 GRU 的混合注意力模型在 Yalova 风力涡轮机数据集上的首次应用,与之前利用相同数据进行的研究相比,精度更高。
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引用次数: 0
Cascading fault prevention and control strategy based on economic dispatch of AC/DC systems 基于交直流系统经济调度的级联故障预防和控制策略
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-13 DOI: 10.1007/s00202-024-02649-5
Huiqiong Deng, Pan Xie, Hongyu Huang, Junfu Shen, Dengwei Pan

To effectively prevent cascading failures during the economic dispatch of AC/DC systems, this paper proposes a preventive control strategy that considers both safety and economic factors and establishes a nonlinear bilayer optimization model. First, based on the action characteristics of relay protection, a mathematical method for determining cascading trips is presented. Second, using the active power output of units as a control variable, a static security margin index that measures the safety level of AC/DC systems is established. An economic indicator is then given by comprehensively considering network loss, unit power supply cost, and environmental governance cost. To address the issues of the sparrow search algorithm falling into local optima and insufficient convergence accuracy, an improved sparrow search algorithm is proposed by integrating improved Circle chaos, spiral search, the Levy flight strategy, and mutation perturbation. Standard test functions are used for comparative analysis with other algorithms to demonstrate the effectiveness of the proposed algorithm. Next, this paper employs this algorithm to solve the aforementioned bilayer preventive control model using a Jacobian matrix preconditioning method combined with sparse storage technology in power flow calculations to improve computational efficiency. Finally, the improved IEEE 39-bus system is used for simulation analysis of the proposed algorithm and model, verifying the feasibility of the proposed strategy.

为有效防止交直流系统经济调度期间的级联故障,本文提出了一种同时考虑安全和经济因素的预防性控制策略,并建立了非线性双层优化模型。首先,根据继电保护的动作特性,提出了确定级联跳闸的数学方法。其次,利用机组有功功率输出作为控制变量,建立了衡量交直流系统安全水平的静态安全裕度指标。然后,综合考虑网络损耗、机组供电成本和环境治理成本,给出了经济指标。针对麻雀搜索算法陷入局部最优和收敛精度不足的问题,提出了一种改进的麻雀搜索算法,将改进的环形混沌、螺旋搜索、利维飞行策略和突变扰动结合在一起。本文使用标准测试函数与其他算法进行对比分析,以证明所提算法的有效性。接下来,本文采用该算法求解上述双层预防控制模型,在功率流计算中使用雅各布矩阵预处理方法结合稀疏存储技术,以提高计算效率。最后,利用改进后的 IEEE 39 总线系统对所提算法和模型进行仿真分析,验证了所提策略的可行性。
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引用次数: 0
A novel coil array compensation structure design with high-misalignment tolerance for UAV-enable WPT system 适用于无人机 WPT 系统的新型线圈阵列补偿结构设计,具有高偏差容限
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-13 DOI: 10.1007/s00202-024-02660-w
Cancan Rong, Jin Chang, Yachao Liu, Zhi Ling, Yunpeng Xu, Qibiao Lu, Yujie Liu, Hailin Zhao, Haoyang Wang, Chenyang Xia

The problem of charging unmanned aerial vehicles (UAVs) is an important application area for wireless power transmission (WPT). However, the flight characteristics of UAVs make it difficult for the traditional single-coil coupling mechanism to ensure alignment between the transmitting and receiving ends. It also has poor anti-skewing performance and a cumbersome optimization process, which ultimately decreases the efficiency of charging UAVs. To address this problem, this paper takes the 2 × 2 square coil array as research object, analyzes the distribution characteristics of the axial magnetic field at a specific height, proposes a "cross" compensation structure, and adopts genetic algorithm to optimize the side length and turns of the compensation coil. The goal is to significantly improve the axial magnetic field uniformity in the charging area and reduce the degree of magnetic field leakage. Finally, the effectiveness and superiority of the proposed "crossover" compensation structure and its optimization method are demonstrated through the construction and testing of the system experimental platform, which significantly improves the anti-offset performance and transmission efficiency of the WPT system.

无人飞行器(UAV)充电问题是无线电力传输(WPT)的一个重要应用领域。然而,由于无人飞行器的飞行特性,传统的单线圈耦合机构很难保证发射端和接收端的对准。同时,它的抗倾斜性能较差,优化过程繁琐,最终降低了无人机的充电效率。针对这一问题,本文以 2 × 2 方形线圈阵列为研究对象,分析了特定高度轴向磁场的分布特征,提出了 "十字 "补偿结构,并采用遗传算法对补偿线圈的边长和匝数进行了优化。其目的是显著改善充电区域的轴向磁场均匀性,降低磁场泄漏程度。最后,通过系统实验平台的搭建和测试,证明了所提出的 "交叉 "补偿结构及其优化方法的有效性和优越性,显著提高了 WPT 系统的抗偏移性能和传输效率。
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引用次数: 0
Traveling wave fault location for AC transmission lines: an approach based on the application of EMD and Teager energy operator 交流输电线路的行波故障定位:基于 EMD 和 Teager 能量算子应用的方法
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-13 DOI: 10.1007/s00202-024-02663-7
Andressa Oliveira, Fernando Moreira, Alessandra Picanço, Felipe Vasconcellos

This paper proposes an approach for the single-ended and the double-ended traveling wave-based fault location algorithm using the empirical mode decomposition associated with the Teager energy operator to extract characteristic data from the faulted voltage signals of an overhead transmission line. The simulation of the power system uses the JMarti line model, with an ideally transposed transmission line, and it was carried out using the alternative transients program (ATP) software. Subsequently, the MATLAB software was used for extracting the traveling wave arrival times and to perform the single-ended and the double-ended fault location algorithms for all simulated scenarios in ATP. The numerical and graphical results prove that the proposed methodology with the Teager energy operator and the double-ended analysis can better extract the characteristic data of the voltage signals and estimate the fault location with good accuracy, with percentage error of 0.034% for the best results, depending only on the fault type and the sampling rate adopted.

本文提出了一种基于单端和双端行波的故障定位算法,使用与 Teager 能量算子相关的经验模式分解,从架空输电线路的故障电压信号中提取特征数据。电力系统仿真采用 JMarti 线路模型,输电线路为理想换位,仿真使用替代瞬态程序 (ATP) 软件进行。随后,使用 MATLAB 软件提取行波到达时间,并在 ATP 中对所有模拟场景执行单端和双端故障定位算法。数值和图形结果证明,采用 Teager 能量算子和双端分析的建议方法能更好地提取电压信号的特征数据,并能准确估计故障位置,最佳结果的百分比误差为 0.034%,仅取决于故障类型和采用的采样率。
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引用次数: 0
Artificial intelligence modeling for power system planning 用于电力系统规划的人工智能模型
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-11 DOI: 10.1007/s00202-024-02652-w
Sonja Knežević, Mileta Žarković

The increasing complexity of modern power systems due to the integration of prosumers, renewable energy sources, and energy storage, has significantly complicated system organization and planning. Traditional centralized power plants are being replaced by decentralized structures, making the power flow more complex to predict. As a result, alternative methodologies for power system planning are imminent. This paper introduces a novel approach using a combination of artificial neural network (ANN) and adaptive neuro-fuzzy inference system (ANFIS) models for forecasting system states. Here, ANN model predicts energy consumption, while the ANFIS model forecasts thermal and hydro power plant production as well as CO2 emissions. The accuracy of these models results from leveraging the collective expertise of power system planning professionals, utilizing extensive databases containing hourly data from measurements in Serbian power systems. These datasets encompass hourly production data from various energy sources, energy consumption patterns, and relevant environmental parameters (such as temperature, wind speed, and solar irradiation). To underscore the effectiveness of the proposed ANN model, predictions of power consumption from ANN are compared with predictions from ARIMA (autoregressive integrated moving average) model. The developed forecasting models are employed to predict annual and daily energy consumption, seasonal variations in thermal and hydro production, and annual CO2 emissions. The dependencies between power consumption/production and ambient parameters are visually depicted in three-dimensional representations. Model accuracy is evaluated through graphical, numerical, and error-based analyses across four distinct error metrics. By utilizing historical data and expert insights from previous production scheduling, these models enhance the precision of future production scheduling decisions. This approach minimizes human error, maximizes the utilization of human expertise, and establishes a framework for effectively planning large-scale power systems. The primary contribution of this research lies in the integration of artificial neural network (ANN) and adaptive neuro-fuzzy inference system (ANFIS) methodologies. This combined approach minimizes the errors inherent in each individual methodology while leveraging their respective advantages. Specifically, the consumption prediction error achieved is 5.64%. When ANFIS is utilized with a training database based on ANN consumption prediction, the prediction error for CO2 emissions is 1.27%.

由于整合了用户、可再生能源和储能,现代电力系统的复杂性日益增加,使系统的组织和规划变得更加复杂。传统的集中式发电厂正在被分散式结构所取代,这使得电力流的预测变得更加复杂。因此,电力系统规划的替代方法迫在眉睫。本文介绍了一种结合使用人工神经网络(ANN)和自适应神经模糊推理系统(ANFIS)模型预测系统状态的新方法。其中,ANN 模型预测能源消耗,而 ANFIS 模型预测火力发电厂和水力发电厂的产量以及二氧化碳排放量。这些模型的准确性得益于电力系统规划专业人员的集体专业知识,并利用了包含塞尔维亚电力系统每小时测量数据的庞大数据库。这些数据集包括各种能源的每小时生产数据、能源消耗模式以及相关环境参数(如温度、风速和太阳辐照度)。为了强调所提议的 ANN 模型的有效性,将 ANN 预测的电力消耗量与 ARIMA(自回归综合移动平均)模型的预测结果进行了比较。所开发的预测模型可用于预测每年和每天的能源消耗、火力和水力发电量的季节性变化以及每年的二氧化碳排放量。电力消耗/生产与环境参数之间的依赖关系通过三维图表直观地描述出来。通过对四个不同误差指标进行图形、数值和误差分析,对模型的准确性进行评估。通过利用以往生产调度的历史数据和专家见解,这些模型提高了未来生产调度决策的精确度。这种方法最大限度地减少了人为误差,最大限度地利用了人类的专业知识,并建立了有效规划大规模电力系统的框架。这项研究的主要贡献在于整合了人工神经网络(ANN)和自适应神经模糊推理系统(ANFIS)方法。这种组合方法最大限度地减少了每种方法固有的误差,同时充分利用了它们各自的优势。具体来说,消耗量预测误差为 5.64%。当 ANFIS 与基于 ANN 消费预测的训练数据库一起使用时,二氧化碳排放量的预测误差为 1.27%。
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引用次数: 0
Design and optimization of smart grid using controllable loads 利用可控负载设计和优化智能电网
IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-10 DOI: 10.1007/s00202-024-02646-8
Tan Zhen, Shaojun Yuan
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引用次数: 0
Analysis of ultra‐capacitor and plug-in electric vehicle for frequency regulation of a distributed power generation system utilizing novel modified gorilla troops optimizer algorithm 利用新型改良猩猩部队优化算法分析用于分布式发电系统频率调节的超级电容器和插电式电动汽车
IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-10 DOI: 10.1007/s00202-024-02653-9
Surya Narayan Sahu, Rajendra Kumar Khadanga, Yogendra Arya, Sidhartha Panda
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引用次数: 0
Design and optimization of smart grid using controllable loads 利用可控负载设计和优化智能电网
IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-10 DOI: 10.1007/s00202-024-02646-8
Tan Zhen, Shaojun Yuan
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引用次数: 0
Energy management in microgrid employing unit commitment considering diverse system uncertainties 微电网中的能源管理采用单位承诺,考虑多种系统不确定性
IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-08-09 DOI: 10.1007/s00202-024-02651-x
Toshi Mandloi, Shailendra Kumar Sharma, S. C. Choube
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引用次数: 0
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Electrical Engineering
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