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对神经网络模型的继电保护的发展历史进行了评述,较详细地分析了神经网络在电力系统的母线保护、电流保护和距离保护的应用。回顾并展望了神经网络在继电保护中的应用。 相似文献
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对神经网络模型的继电保护的发展历史进行了评述,较详细地分析了神经网络在电力系统的母线保护、电流保护和距离保护的应用。回顾并展望了神经网络在继电保护中的应用。 相似文献
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智能故障诊断集成系统的研究 总被引:3,自引:0,他引:3
阐述了专家系统及神经网络用于故障诊断时集成的必要性,归纳了常见的专家系统与神经网络的集成结构及方法,总结了基于事例推理的优越性。采用嵌入式结构,将基于事例推理与BP神经网络相结合,提出了一种智能故障诊断新方案,对此方案进行了论证,详细介绍了方案的各个组成部分及实现方法。最后将该方法应用于某液压能源系统的故障诊断中,结果令人满意。 相似文献
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基于模糊遗传神经网络的信息融合故障诊断技术及其应用 总被引:1,自引:0,他引:1
在基于广义模糊加权型推理的模糊神经网络基础上,融合非一致性遗传算法,建立了一种模糊遗传神经网络。利用模糊遗传神经网络技术建立信息融合中心,对多传感器数据进行融合处理,通过多源互补信息减小故障诊断系统的不确定性。讨论了模糊遗传神经网络多传感器信息融合方法中数据处理、特征向量维数压缩与关联、归一化处理方法等。同时,对模糊遗传神经的构造以及学习训练等内容,也作了较为详细的讨论。并对模糊遗传神经网络信息融合技术应用于变压器状态的实时监测的应用前景进行了初步探讨。 相似文献
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近年来神经网络研究的重新崛起,在学术界引起雪崩式的连锁反应,成为学术史上少见的奇特现象。本文对人工神经网络的发展历史进行了评述,较详细地分析了典型的人工神经元模型和神经网络模型,介绍了国外在电力系统安全分析和经济调度的应用研究,探讨了神经网络在电力系统规划中的应用,以期引起电力界同仁的关注。 相似文献
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详细介绍了小波包和模糊神经网络的基本概念和原理,并将其应用到双馈风力发电机组的齿轮箱故障诊断中,说明小波变换技术可以很好地提取齿轮箱振动过程中的特征信号,模糊神经网络可以柔性地处理齿轮箱振动信号的特殊数据. 相似文献
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The authors give a bibliographic survey of research, development, and application of expert systems in electric power systems based on over 80 published articles from 1982 to 1988. The general background of the research, development, and applications is described. Requirements for expert systems technology in power system applications are clarified. A historical perspective of expert systems, an overview of their applications, and potential future applications in power systems are presented 相似文献
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The advent of fiberoptic technologies has provided the communication and instrumentation worlds with a new tool. Fiberoptics offer high noise immunity, large bandwidth, and interesting sensor properties. The uses of fibers span from the telecommunications area, to the futuristic medical and ``Star Wars' applications, to monitoring heat tracing on pipelines. A number of interesting and potentially useful applications of fiberoptics have been made to the area of pipes and pipelines. A summary of the basics of fiberoptics needed to understand applications in pipes and pipelines is provided. Communications, sensors, and unique applications are examined. Available literature related to the specific applications where fiberoptics are used in pipes and pipelines is referenced. Each example provides a new application of what promises to be a major technology of the 21st century. The understanding of fiberoptics today gives tomorrow's engineer a glimpse at tomorrow's monitoring, metering, and communication systems. A broad overview of these applications and an extensive referencing for further investigation is provided to give the interested engineer a good source document to start the study of fiberoptics for pipeline applications. 相似文献
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对电力系统高级软件中的图形功能应用进行了概括与评述,并介绍了在图形功能设计中的一些初步思路。通过分析各种图形应用的特点入手,做了图形功能应用归纳,工程实际应用特性分析,功能设计中的关键问题研究等工作,并对图形应用的发展趋势进行了探讨。 相似文献
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V.C. Ramesh 《International Journal of Electrical Power & Energy Systems》1996,18(8):527-533
This paper reviews the state-of-the-art of distributed computing (also called coarse-grained parallel computing) technology, which has rapidly evolved over the last two decades, with emphasis on the trend towards standardization that has occurred in the last few years. The review is focused on on-line power system applications, and excludes fine-grained parallel applications and planning applications. The applications are divided into two categories. The first category consists of applications where the motivation for distributed processing stems from geographical distribution. The second category is the rest of the on-line applications where the parallelism stems from the easily decomposable abstract (mathematical) model of the problem as opposed to being ‘physically based’. Some of the issues in such distributed computing are illustrated using the example of security-constrained optimal power flows. The paper concludes with some projections on the use of this technology in energy management systems (EMS) in the near future. 相似文献
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为提高电网频率稳定性,并兼顾用户用电综合满意度,建立一种电网友好型多用电设备协调控制优化模型,并提出其控制策略。该模型综合考虑友好响应电网频率以及用户用电综合满意度,其中友好响应电网频率以用电设备参与频率响应量进行衡量;用户用电综合满意度包括以用电设备累计中断负荷或减载运行总时间的平均值表示的用电设备受控满意度指标以及以用电设备的受控时间与运行时间建立的模糊隶属度函数表示的设备正常供电满意度指标。IEEE 14节点测试模型仿真结果表明,所提频率控制策略能有效应对频率波动。 相似文献
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网络分析应用中的公用信息模型 总被引:11,自引:7,他引:11
从能量管理系统应用的一个重要组成部分——网络分析应用的角度出发,介绍了网络分析应用的数据需求,讨论了公用信息模型(commoninformationmodel,CIM)对上述数据需求的支持,并进一步明确了3个问题:CIM模型库对于网络分析应用提供了哪些信息模型;这些模型应该如何使用;模型库在网络分析应用方面存在哪些不足。围绕上述问题介绍了5类模型(包括量测模型、保护模型、控制模型、拓扑模型和设备模型)及其在网络分析中的应用,展望了CIM在网络分析中的应用前景。 相似文献
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It is estimated that about 80% of all photovoltaic (PV) modules are used in stand-alone applications. Continuous power is obtained from PV systems by using a storage buffer, typically in the form of a lead acid battery. Batteries used in PV applications have different performance characteristics compared with batteries used in more traditional applications. In PV applications, lead acid batteries do not reach the cycle of lead acid batteries used in other applications such as uninterruptible power supplies or electric vehicles. The shortened battery life contributes significantly to the costs of a PV system. In some PV systems the battery accounts for more than 40% of the life cycle costs. An increase in the lifetime of the battery will result in improved reliability of the system and a significant reduction in operating costs. The life of a lead acid battery can be extended by avoiding critical operating conditions such as overcharge and deep discharge. This paper presents a battery management system for such applications 相似文献
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小波分析在系统辨识中的应用 总被引:10,自引:0,他引:10
对小波分析的主要研究方向和特点进行了介绍,综述了小波分析在系统辨识中的应用。针对不同的辨识模型,讨论了小波分析不同的应用形式,研究了小波网络在系统辨识中的应用。最后探讨了小波分析在系统辨识中的研究方向。 相似文献