模拟变电所实习基地的建设与实践

模拟变电所是为加强电气自动化专业学生强电知识的学习，同时培养供配电专业技术人才而设计建设的实习基地。此基地模仿实际的变电所设计，提供真实的现场运行及故障环境．使学生在实习中提高实践动手能力，增强他们的就业竞争力．     

基于PLC的备用电源自动投入控制系统设计

利用S7-200 PLC实现对一种典型备用电源自动投入系统的控制.该系统通过对所采集数字信号的分析,能自动识别系统的实际运行情况并采取相应的备自投动作.同时该系统具有完善的故障报警和显示功能,在供电系统出现故障时第一时间报警和切除故障,满足用户对供电质量的要求.     

高压开关柜的发展与现状分析

在分析国内外高压开关柜的总体现状的基础上，通过对高压开关柜国内外产品技术水平的研究对比，找出国内高压开关柜与国外先进柜体的差距，提出今后国内生产厂家努力的方向。     

真空断路器操动机构选型比较分析

真空断路器以其优良的机械寿命与电寿命、少维护等特点，在中压开关领域独领风骚．从机械寿命、分合闸特性、操作电源、智能化等方面对电磁机构、弹簧机构、永磁机构等操动机构进行比较分析，确定永磁机构应为真空断路器首选机构。     

An adaptive high-voltage direct current detection algorithm using cognitive wavelet transform

This paper proposes an algorithm that uses wavelet level adaptive decision-making for detecting high-voltage direct current (HVDC) discharge in wavelet transform cognitively. The identification and detection of HVDC discharge is an essential area of investigation, which contributes to ensuring pipeline safety and the optimal operation of an electrical power system. The proposed algorithm overcomes the wavelet packet transform’s disadvantage of needing to determine the level in advance. The decomposition level of wavelet packet transform is controlled by calculating relative wavelet energy change to decide its wavelet level. Our proposal extracts richer features of HVDC discharge by comparing other feature extraction algorithms. To select the best-suited mother wavelet function, we also design a selection method based on quantitative and qualitative approaches. An additional objective of this study is to detect the phenomenon of HVDC discharge using CP time-series data to assess the corrosion of energy pipelines. Moreover, a third primary discovery is that a wavelet-based application framework is designed to detect the HVDC discharge and further protect the energy pipeline. These discoveries can be valuably applied to the protection of power systems. They also provide brighter perspectives on future opportunities to expand on studies-to-date on the detection and classification of time-series data.