基于大数据分析的10kV配网停电作业时长预测优化研究

传统的10kV配网作业停电时长预测主要依赖于前期现场勘查和工作负责人经验估算。随着配网作业手段的不断进步及用户供电可靠性、优质服务要求的不断提高,对10kV配网预安排停电预测的精细、准确程度也提出了较高的要求。针对目前停电时长预测与实际完成偏差仍然较大情况,本文提出了一种基于大数据分析的10kV配网停电作业时长预测方法。通过开展近三年配网停电事件分析,归纳整理影响预测准确度的不同因素,从标准化作业时长典型基准库、标准化作业时长优化调整机制、标准化作业时长后评估体系以及综合停电时长预测模型四个方面展开深入研究,优化提升综合停电作业时长准确预测能力,为停电作业预测偏差管控提供一个可参考、易操作的高效辅助工具。生产作业实际应用表明,这种基于大数据分析的10kV配网停电作业计划时长预测方法,可以较好的提升停电作业时长准确预测能力,降低可靠性预测偏差,发挥可靠性目标管控作用,助力停电信息发布等优质服务工作精准开展。     

10kV配网故障停电原因分析及解决对策研究

10kV配网系统由于点多面广,运行环境复杂,运行中受到各种因素的影响,因此故障停电的情况较为普遍。随着经济的高速发展和人们生活水平的不断提高,人们对电的依赖程度越来越高,一旦发生故障停电,不仅严重扰乱人们正常的生产生活,还可能造成巨大的经济损失。文章详细分析了10kV配网故障停电的主要原因,并就如何降低配网故障率、提高供电可靠性提出了相应的对策建议。     

降低10kV配网线路故障跳闸率的措施探究

在我国现代化建设中,配网线路的稳定性,会直接关系着企业的生产是否能顺利进行,也与人们的正常生活有着极大联系。因此,为了保证配网线路的可靠性,必须降低其故障跳闸率,以减少非计划停电所带来的负面影响。本文对10kV配网线路跳闸的原因进行了分析,并提出了降低跳闸率的相关措施,希望能够有效提升10kV配网线路的整体稳定性,从而促进我国市场经济更快、更好发展。     

10kV配网单相弧光接地故障及调度处理建议

单相接地是10kV配电网在运行过程中常见的故障问题,当前很多变电站都采用了中性点非有效的接地方式,对故障停电时间进行了缩短,但是故障的准确选线还是不容易。本文对10kV配网单相弧光接地故障及调度处理建议进行分析和探讨,旨在加强对各种故障的预防。     

城市10 kV配网线路的设计方案分析

随着我国城市化进程的不断加快,城市配网线路正在不断完善。10 kV配网线路具有面积广、线路长、结构复杂等特点。10 kV配网线路在实际运行过程中,很容易出现各种各样的问题和故障。因此,做好10 kV配网线路的设计工作是非常必要的。就城市10 kV配网线路的设计方案进行了分析和探讨。     

10 kV配网电力工程的技术问题分析与解决对策

随着电力工业的迅速发展,电网的网络结构不断发生变化。10 kV配网发展迅速,是配网建设的基础。在施工过程中,10 kV配网将会遇到许多技术难题,若这些难题不能被有效解决,将严重影响电网的安全性和可靠性。为此,文章重点分析10kV配网的技术问题,并提出相应的解决措施,以确保10k V配网技术更加专业化,有效提高10kV配网质量。     

关于农村10kV配网工程管理的几点探讨

本文阐述了一些关于农村10kV配网工程管理的理念,概括了10kV配网工程当前存在的一些较为普遍的问题,并主要从技术管理和运行管理两个方面提出了一些管理措施,为促进农村10kV配网工程管理的发展做出自己的一些努力。     

基于一体化智能环网柜的10 kV配网自动化建设研究

目前,在10 kV配网自动化建设方法的自动化配置过程中,未对自动化运行的电压偏差量进行设计,增加了很多不必要的工作,导致功率的损耗程度较大。因此,文章基于一体化智能环网柜的10 kV配网自动化建设进行研究。首先,通过一体化智能环网柜的特征构建智能控制模块,再根据模块中获取的数据和10 kV配网自动化运行的电压偏差量来完成10 kV配网自动化配置,完成配网自动化配置后,对配网进行自动化建设,包括SCZAD自动化功能建设和馈线自动化建设。实验中,通过统计某地区2016-2020年的10 kV配网自动化建设情况,对提出的方法进行验证,经实验结果分析证明,采用基于一体化智能环网柜的10 k V配网自动化建设的配网功率消耗较低,较其他两种方法的功率损耗可减少约20 000 kW。此方法可以有效减少配网运行的消耗,对提高配网的运行效率具有一定现实意义。     

10kV配电网供电可靠性研究

为了提高10kV配电网系统的供电可靠性,增强配电网系统的供电能力,本论文认真分析了现阶段10kV配网系统的面临的问题及制约因素,从而提出了相关的解决措施,通过配网的实际运行情况发现,本论文所提出的相关措施能够有效的提高10kV配网的运行可靠性。     

对10kV配网供电运行可靠性优化的研究

10kV配网供电运行的可靠性,直接影响到国家电网的安全稳定运行,影响到供电质量,加强对10kV电网的维护,能够确保社会经济健康有序发展,促进我国特色社会主义社会的建设。本文对10kV配网供电运行可靠性优化进行分析,旨在提高10kV配网供电的运行的可靠性。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.