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2024 IEEE 4th International Conference on Power, Electronics and Computer Applications (ICPECA)最新文献

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Research on Fault Analysis and Remote Fault Diagnosis Technology of New Large Capacity Synchronous Condenser 新型大容量同步冷凝器故障分析与远程故障诊断技术研究
Jiang Chen, Sun Chuan, Xia Chao
Synchronous condensers offer significant benefits in large reactive power capacity and strong voltage support ability, which can effectively solve prominent problems such as commutation failure and voltage drop of ultra-high voltage DC converters. They are increasingly widely used in power grids. However, the large-capacity condenser has a large volume and complex structure and is prone to faults, which urgently requires research on fault feature analysis and diagnosis technology. This article analyzes the features of large-capacity synchronous condensers and their engineering advantages, such as increasing the short-circuit ratio of the receiving power grid, improving the transmission limit power, working in a forced excitation state for voltage support in the event of a commutation failure at the UHVDC receiving end, absorbing excess reactive power to suppress sudden voltage rise during DC blocking, and providing dynamically adjustable reactive power support for the AC power grid through flexible switching of late or leading phase states. This article provides common faults, such as mass imbalance, misalignment, friction, oil film oscillation, etc. At the same time, the fault characteristics are analyzed using computer simulation analysis, laboratory simulation analysis, and on-site measurement testing methods. A standard fault diagnosis method for synchronous condensers is proposed on this basis, utilizing fault pattern recognition and credibility evaluation. By establishing a library of fault models for the synchronous condenser and employing time-domain and frequency-domain signal analysis techniques, the credibility and nature of the fault are determined by calculating the instantaneous values and rate of change of the sampled signal using eigenvalues. Through the comparison and analysis of pertinent standards and historical data, the severity of the fault is ascertained, along with the trend and severity of the problematic synchronous condenser. The findings of this study have additionally advanced the progress of fault diagnosis technology for synchronous condensers with large capacities.
同步电容器具有无功容量大、电压支持能力强等显著优势,可有效解决特高压直流换流器换向故障和电压跌落等突出问题。它们在电网中的应用越来越广泛。然而,大容量凝汽器体积大、结构复杂、故障易发,急需开展故障特征分析与诊断技术研究。本文分析了大容量同步电容器的特点及其工程优势,如提高受端电网的短路率,提高输电极限功率,在特高压直流受端换流故障时工作在强制励磁状态以提供电压支持,在直流闭锁时吸收多余的无功功率以抑制电压骤升,以及通过灵活切换迟相或导相状态为交流电网提供动态可调的无功支持等。本文介绍了常见的故障,如质量不平衡、不对中、摩擦、油膜振荡等。同时,采用计算机仿真分析、实验室仿真分析和现场测量测试方法对故障特征进行了分析。在此基础上,利用故障模式识别和可信度评估,提出了同步冷凝器的标准故障诊断方法。通过建立同步冷凝器故障模型库,并采用时域和频域信号分析技术,利用特征值计算采样信号的瞬时值和变化率,从而确定故障的可信度和性质。通过对相关标准和历史数据的比较和分析,确定了故障的严重程度,以及问题同步冷凝器的趋势和严重程度。这项研究的结果进一步推动了大容量同步冷凝器故障诊断技术的发展。
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引用次数: 0
Study on Short-Term Electricity Load Forecasting Based on SSA-LSTM-AdaBoost Modeling 基于 SSA-LSTM-AdaBoost 模型的短期电力负荷预测研究
Yuying Lu
Power load forecasting is of great significance and plays a vital role in the safe operation of the power system and the stability of power supply. Aiming at the problem of low prediction accuracy of single model, this paper proposes a prediction model based on the combination of Sparrow Search Algorithm (SSA) optimized Long Short-Term Memory Network (LSTM) and integrated algorithm. Multiple weak learners are first integrated through the AdaBoost algorithm to capture patterns and features in the data from multiple perspectives. Secondly, the collective intelligence and group collaboration ability of the SSA algorithm is utilized to ensure the global convergence of the algorithm, thus improving the prediction accuracy and robustness of the LSTM model. Finally, the model is analyzed and compared by examples to verify that the prediction accuracy of the model has been further improved.
电力负荷预测意义重大,对电力系统的安全运行和电力供应的稳定性起着至关重要的作用。针对单一模型预测精度低的问题,本文提出了一种基于麻雀搜索算法(SSA)优化的长短时记忆网络(LSTM)与集成算法相结合的预测模型。首先通过 AdaBoost 算法整合多个弱学习器,从多个角度捕捉数据中的模式和特征。其次,利用 SSA 算法的集体智能和群体协作能力,确保算法的全局收敛性,从而提高 LSTM 模型的预测精度和鲁棒性。最后,通过实例对模型进行分析和比较,验证模型的预测准确性得到了进一步提高。
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引用次数: 0
Big data clustering method based on parallel K-means 基于并行 K-means 的大数据聚类方法
Haibo Liu, Yongbin Bai, Zhenhao Chen, Zhenfeng Zhang
In the era of big data, traditional data clustering algorithms have gradually failed to meet the application requirements, and the optimization of data compression and parallelization methods has become a research hotspot. Based on the analysis of the traditional K-means clustering algorithm, this paper optimizes and improves the parallelized K-means algorithm, and proposes the Spark-Kmeans algorithm, which mainly retains the sample set distribution information by random sampling of large samples, and pre-clusters the samples in the nodes, and reclusters the pre-clustering in the convergence node. And it uses this as the initialization clustering center, so as to eliminate the problem of algorithm convergence instability caused by random initialization of the clustering center. Finally, single-node clustering and Spark-Kmeans clustering experiments are performed on the kdd_cup99 dataset and sklearn randomly generated dataset, and the effectiveness of the algorithm is verified by time-consuming, purity, error squared and indexes.
在大数据时代,传统的数据聚类算法已逐渐不能满足应用需求,数据压缩和并行化方法的优化成为研究热点。本文在分析传统K-means聚类算法的基础上,对并行化K-means算法进行了优化和改进,提出了Spark-Kmeans算法,该算法主要通过对大样本的随机抽样保留样本集分布信息,在节点中对样本进行预聚类,在收敛节点中对预聚类进行再聚类。并以此作为初始化聚类中心,从而消除了随机初始化聚类中心导致的算法收敛不稳定问题。最后,在 kdd_cup99 数据集和 sklearn 随机生成的数据集上进行了单节点聚类和 Spark-Kmeans 聚类实验,并通过耗时、纯度、误差平方和指标验证了算法的有效性。
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引用次数: 0
A Power Data Privacy Protection Method Based on Secret Sharing 基于秘密共享的电力数据隐私保护方法
Boyu Liu, Wencui Li, Xinyan Wang, Ningxi Song, Zheng Zhou
The issue of privacy in electrical power data within smart grids has drawn increasing attention, with power data leakage posing a serious threat to users' personal privacy. Addressing these concerns, this paper proposes a power data privacy protection method based on secret sharing. Firstly, the method utilizes nodes elected through the leader election algorithm in the Raft protocol to replace traditional aggregators for data verification and aggregation operations. This eliminates the need for a trusted third party and enables fault tolerance for intermediate nodes. Secondly, the method incorporates a dynamic secret sharing homomorphic scheme to achieve secure data aggregation, ensuring that even internal attackers can only access aggregated data without obtaining individual power consumption details. Moreover, the scheme employs batch verification techniques to enhance signature verification speed. Experimental analysis indicates that this method exhibits lower computational and communication overhead compared to alternative approaches.
智能电网中的电力数据隐私问题日益受到关注,电力数据泄露对用户的个人隐私构成了严重威胁。针对这些问题,本文提出了一种基于秘密共享的电力数据隐私保护方法。首先,该方法利用 Raft 协议中的领导者选举算法选出的节点来代替传统的聚合器进行数据验证和聚合操作。这消除了对可信第三方的需求,并实现了中间节点的容错。其次,该方法采用动态秘密共享同态方案来实现安全的数据聚合,确保即使是内部攻击者也只能访问聚合数据,而无法获取单个功耗细节。此外,该方案还采用了批量验证技术,以提高签名验证速度。实验分析表明,与其他方法相比,该方法的计算和通信开销更低。
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引用次数: 0
Deep Learning Based Motion Target Detection Algorithm 基于深度学习的运动目标检测算法
Xizhou Wang
With the dramatic growth of video data, the storage and computational resources required to process this huge amount of data have increased significantly. In order to cope with this challenge, it is necessary to extract the key information in the video in a more intelligent and efficient way, while filtering out a large amount of redundant content. In this paper, the traditional CNN model and Transformer model are constructed respectively using video frames of car motion process from video viewpoint as a dataset. The model performance is improved by advanced data preprocessing operations. The bilateral filtering technique is introduced in this study, aiming to improve the image quality and enhance the image processing effect through denoising operations, making it more applicable to the subsequent processing steps. Finally, the Transformer model is verified by the model and the recognition accuracy of the Transformer model is up to about 90%.
随着视频数据的急剧增长,处理这些海量数据所需的存储和计算资源也大幅增加。为了应对这一挑战,有必要以更智能、更高效的方式提取视频中的关键信息,同时过滤掉大量冗余内容。本文以视频视角下汽车运动过程的视频帧为数据集,分别构建了传统 CNN 模型和 Transformer 模型。通过先进的数据预处理操作提高了模型性能。本研究引入了双边滤波技术,旨在通过去噪操作提高图像质量,增强图像处理效果,使其更适用于后续处理步骤。最后,通过模型对 Transformer 模型进行了验证,Transformer 模型的识别准确率高达 90% 左右。
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引用次数: 0
A Data Retrieval Method Based on AGCN-WGAN 基于 AGCN-WGAN 的数据检索方法
Geng Sun, Guotao Peng, Xiaolei Tian, Lu Li, Yuqi Zhao, Yue Wang
Traditional knowledge graph retrieval techniques ignore node relationship weights, making it difficult to achieve targeted retrieval. Therefore, a nonlinear model AGCN-WGAN is proposed to solve retrieval tasks in relational networks, fully utilizing the advantages of Graph Convolutional Networks (GCN) and Generative Adversarial Networks (GAN). Firstly, AGCN is used to capture the local topological features of a single node; In addition, the use of GAN enhances the ability of AGCN models to generate reasonable weight distribution maps, effectively extracting correlations between nodes, thereby improving the performance of the model in handling large-scale data retrieval tasks. In order to verify the effectiveness of the method, the dispatching operation data in a real business scenario of a city power grid is used for experiments. The experimental results show that the proposed data retrieval method has significantly improved accuracy compared to existing methods.
传统的知识图谱检索技术忽略了节点关系权重,难以实现有针对性的检索。因此,本文充分发挥图卷积网络(Graph Convolutional Networks,GCN)和生成对抗网络(Generative Adversarial Networks,GAN)的优势,提出了一种非线性模型 AGCN-WGAN 来解决关系网络中的检索任务。首先,利用 AGCN 捕捉单个节点的局部拓扑特征;此外,GAN 的使用增强了 AGCN 模型生成合理权重分布图的能力,有效提取了节点间的相关性,从而提高了模型处理大规模数据检索任务的性能。为了验证该方法的有效性,使用了某城市电网真实业务场景中的调度运行数据进行实验。实验结果表明,与现有方法相比,所提出的数据检索方法的准确性有了显著提高。
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引用次数: 0
Optimization of Heliostat Field Arrangement Model Based on Geometric Relationship and Particle Swarm Algorithm 基于几何关系和粒子群算法的太阳恒星场排列模型优化
Zhishuai Liu, Zhengyang Wei, Jiangnan Li
With the continuous progress of photovoltaic (PV) technology and the steady reduction of related costs, solar energy, as an important renewable energy source, shows an increasingly strong competitiveness in energy market competition. In the tower solar thermal power station, the arrangement of the heliostat field directly affects the power generation efficiency of the tower power generation system as well as the working cost. Therefore, this paper presents a model based on geometric relationship and particle swarm algorithm for the optimization of the heliostat field arrangement, mathematical modeling and calculating cosine efficiency, truncation efficiency, etc., and effectively improves the output thermal power as well as the optical efficiency of the heliostat field. Geometric planning is utilized to determine the location of the absorption tower, the coordinates of the heliostat arrangement and other layout parameters to optimize the layout of the tower solar system. Drawing on the idea of clustering, the model analyzes the characteristics of the heliostat mirrors in the same region, uses same or similar parameters to minimize the cost of computation, improving the overall optical efficiency of the mirror field. The particle swarm algorithm is utilized to solve the parameters such as mirror length and mirror width of the heliostat to get the suitable size of the heliostat for the heliostat mirror field. After completing all the calculation and optimization steps, the final solution of the model is carried out in this paper. The layout scheme of the heliostat field optimized by the implementation of the model gets a significant performance improvement. Specifically, the average annual thermal power output of the heliostat field is improved by 33.2309 MW, while the average annual optical efficiency is also improved by 43.2%. These improvements effectively enhance the power generation efficiency of the whole system, confirming the effectiveness of the optimization method in this paper.
随着光伏技术的不断进步和相关成本的稳步降低,太阳能作为一种重要的可再生能源,在能源市场竞争中显示出越来越强的竞争力。在塔式光热电站中,定日镜场的布置直接影响塔式发电系统的发电效率和工作成本。因此,本文提出了一种基于几何关系和粒子群算法的定日镜场布置优化模型,对余弦效率、截断效率等进行数学建模和计算,有效提高了定日镜场的输出热功率和光学效率。利用几何规划确定吸收塔的位置、定日镜布置坐标和其他布局参数,优化塔式太阳能系统的布局。该模型借鉴聚类的思想,分析同一区域内定日镜的特性,使用相同或相似的参数,最大限度地降低计算成本,提高镜场的整体光学效率。利用粒子群算法来求解定日镜的镜长和镜宽等参数,从而得到适合定日镜镜场的定日镜尺寸。在完成所有计算和优化步骤后,本文对模型进行了最终求解。模型优化后的定日镜场布局方案性能显著提高。具体而言,定日镜场的年平均热功率输出提高了 33.2309 兆瓦,年平均光效率也提高了 43.2%。这些改进有效提高了整个系统的发电效率,证实了本文优化方法的有效性。
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引用次数: 0
The Study of Motion Control Algorithm for the Wing Mechanism of Solar-Powered Electric Vehicle 太阳能电动汽车机翼机构的运动控制算法研究
Mengjun Song, Jinggong Wei, Yaming Wang, Jianfeng Cheng
The paper focuses on the control system of pure solar powered electric vehicle Tianjin No.2 and proposes a double fuzzy controller scheme based on PID control system. The method can provide certain algorithm support for the stable and intelligent operation of photovoltaic support mechanisms with large aspect ratio and large light receiving area. The paper is based on the traditional PID control method of DC motors, proposing a fuzzy processing scheme for three parameters of PID, i.e. proportion, integration, and differentiation. At the same time, the sensing signals from wind and sunlight are also computed with fuzzy processing. Finally, through reasonable determination of parameters, adjustment of fuzzy control decisions, and simulation verification, the results show that the proposed method can provide theoretical and practical support for the stable and intelligent movement of this type of support mechanism.
本文以纯太阳能电动汽车天津 2 号的控制系统为研究对象,提出了一种基于 PID 控制系统的双模糊控制器方案。该方法可为大长宽比、大受光面积的光伏支撑机构的稳定智能运行提供一定的算法支持。本文在直流电机传统 PID 控制方法的基础上,针对 PID 的比例、积分、微分三个参数提出了模糊处理方案。同时,对风力和阳光的感应信号也进行了模糊处理计算。最后,通过参数的合理确定、模糊控制决策的调整以及仿真验证,结果表明所提出的方法可以为该类型支撑机构的稳定和智能运动提供理论和实践支持。
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引用次数: 0
A Container-Based Continuous Integration Development and Operations Platform 基于容器的持续集成开发和运营平台
An Ning
This article proposes a platform of container-based continuous integration development and operations. It is a code continuous integration and automation operations platform based on the Kubernetes container environment. The platform leverage the capabilities and features of containers to achieve automation from development to deployment.
本文提出了一个基于容器的持续集成开发和运营平台。这是一个基于 Kubernetes 容器环境的代码持续集成和自动化运营平台。该平台利用容器的能力和特性,实现从开发到部署的自动化。
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引用次数: 0
Research on Power Safety Monitoring Action Recognition Algorithm Through Neural Network and Deep Learning 通过神经网络和深度学习的电力安全监测动作识别算法研究
Xingtao Bai, Ningguo Wang, Yongliang Li, Hai-Jun Luo, Bo Gao
This paper studied the methods for improving the accuracy and efficiency of the action of power employees by deeply studying the application of neural network algorithm in power safety supervision video. Firstly, this paper summarizes the research status of power safety monitoring system and related action recognition algorithms. For the power industry, timely and accurate identification of workers' movements is essential for accident prevention and management. In this context, various motion recognition algorithms are emerging, among which neural network algorithm has attracted much attention due to its excellent performance in image processing and pattern recognition. Through deep learning, neural networks can automatically learn key features from a large number of video data, providing a more reliable means for human action recognition. Secondly, this paper introduces in detail the proposed method of power safety monitoring video personnel action recognition based on neural network algorithm. Through the optimization of neural network structure and the careful selection of training data, we construct an efficient and accurate action recognition model. The model can quickly and accurately identify the actions of different personnel at work by monitoring the video of electric power operation, including common operation actions and special actions in emergency situations. Our method can more comprehensively understand the various actions of personnel in the electric power environment. Through the analysis of a large number of experimental results, we verify the effectiveness and robustness of the proposed algorithm. Compared with traditional methods, the motion recognition algorithm based on neural network has achieved significant improvement in accuracy and response speed. This proves the practical application prospect of this method in the field of power safety supervision.
本文通过深入研究神经网络算法在电力安全监管视频中的应用,研究了提高电力员工动作准确性和效率的方法。首先,本文总结了电力安全监控系统及相关动作识别算法的研究现状。对于电力行业来说,及时准确地识别工人的动作对于事故预防和管理至关重要。在此背景下,各种动作识别算法层出不穷,其中神经网络算法因其在图像处理和模式识别方面的优异性能而备受关注。通过深度学习,神经网络可以从大量视频数据中自动学习关键特征,为人类动作识别提供更可靠的手段。其次,本文详细介绍了所提出的基于神经网络算法的电力安全监控视频人员动作识别方法。通过优化神经网络结构和精心选择训练数据,我们构建了一个高效、准确的动作识别模型。该模型可以通过监控电力运行视频,快速准确地识别不同人员在工作中的动作,包括常见的操作动作和紧急情况下的特殊动作。我们的方法可以更全面地了解电力环境中人员的各种动作。通过对大量实验结果的分析,我们验证了所提算法的有效性和鲁棒性。与传统方法相比,基于神经网络的动作识别算法在准确率和响应速度上都有显著提高。这证明了该方法在电力安全监管领域的实际应用前景。
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引用次数: 0
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2024 IEEE 4th International Conference on Power, Electronics and Computer Applications (ICPECA)
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