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对高压断路器状态检修在线监测系统,特别是针对华北电网公司近期开展的设备状态检修研究与应用课题进行了分析;从断路器设备的结构原理特点出发,结合现有的监测技术,提出了高压断路器状态在线监测系统的具体的可行性设想。 相似文献
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为实现高压断路器的在线监测和故障诊断功能,提高电力系统的稳定性和安全性,设计了基于SF6气体的
高压断路器运行状态在线监测系统.提出了基于Polanyi吸附势的SF6气体状态监测方法,并提出了SF6气体高压断
路器机械特性的工作状态监测方法.设计了在线监测系统的硬件结构和软件设计流程,同时实现了SF6气体状态监测
和机械特性状态监测的系统功能.在某500kV变电站的500kVSF6高压断路器上验证了SF6高压断路器运行状态在
线监测系统的可靠性和准确性.该研究实现了高压断路器运行状态的在线监测,提高了设备保养周期和利用效率,符
合现代电力系统智能化、自动化和信息化的需求. 相似文献
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SF6高压断路器机械参量在线监测系统 总被引:12,自引:0,他引:12
章结合在高压断路器上开展的状态检修在线监测工作,介绍了一种用于监测运行状态下高压断路器操作过程中机械参量的在线监测系统。用它可以判断断路器是否运行在合格范围内,并可发现其变化趋势。该系统可用于地生产维护,安排检修,提高对高压断路器设备的管理水平。 相似文献
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基于无线技术局部放电监测和环境温度监测一体化的高压开关设备状态监测诊断系统,针对部分变电站开关柜处于边远山区潮湿环境易导致事故的情况研发高压开关柜智能监测系统。实践证明,系统能在线监测高压开关柜设备状态,提高故障诊断效率。 相似文献
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电站锅炉停用保护剂多采用十八胺和表面活性胺。对这2种停用保护剂进行了应用效果对比研究,即对湿冷机组、空冷机组采用十八胺或表面活性胺、有无凝结水精处理系统等6台机组停机和启动过程中给水、主蒸汽和凝结水的氢电导率变化情况进行分析。研究结果表明:在停机过程和启动过程,2种保护剂均会在水汽系统中发生部分分解,导致水汽系统的氢电导率显著升高;表面活性胺和十八胺比较,使用前者,机组启停机过程可保持凝结水精处理系统正常投运,因而可使水汽质量迅速达标,对机组安全运行有利,因此推荐采用表面活性胺作为锅炉停用保护剂。 相似文献
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特高压线路工频参数测试干扰分析是选择适合工频参数测试方法及测试结果分析的重要基础。测试了1 000 kV皖南-浙北特高压线路正序和零序参数测试期间的干扰电压信号,分析了其频谱特征;在此基础上,通过与正序参数仿真计算值的对比分析了正序参数实际测试偏差。结果表明:皖南-浙北特高压同塔双回线路工频参数测试期间,干扰电压存在“三相不平衡性及时变性”的特点;工频法和异频法2种不同方法得到的线路参数测试结果存在一定差异;干扰电压“时变”时,线路工频参数测试宜采用异频法。 相似文献
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《国外电子测量技术》2014,(10)
正Qingdao,China7.16-19,2015The International Conference on Electronic MeasurementInstruments(ICEMI)is the world’s premier conference dedicated to the electronic measurement and test of devices,boards and systems that is covering the complete cycle from design,verification,test,diagnosis,failure analysis and process of manufactory and products 相似文献
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Cuba’s electric sector is approaching an inflection point. Although the country has historically relied upon non-commercial barter agreements for imported oil to meet its electric demand, a combination of factors including reducing imports, increasing demand, and ambitious climate change goals suggest new pathways forward may be warranted. The way Cuba responds to near- and long-term challenges will help set the stage for its energy future. This article describes Cuba's electric sector and provides a set of key recommendations to consider going forward. 相似文献
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《国外电子测量技术》2014,(9)
正Qingdao,China7.16-19,2015The International Conference on Electronic MeasurementInstruments(ICEMI)is the world's premier conference dedicated to the electronic measurement and test of devices,boards and systems that is covering the complete cycle from design,verification,test,diagnosis,failure analysis and process of manufactory and products 相似文献
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介绍了550 kV SF6气体绝缘金属封闭式组合电器(GIS)高海拔套管的绝缘屏蔽结构参数对电场分布的影响。针对套管单屏蔽结构方案,通过有限元法研究了接地屏蔽层翻边结构参数组合对套管内部最大电场强度的影响;研究了接地屏蔽层高度对GIS套管内外绝缘电场强度分布的影响。从而通过最优化接地屏蔽层高度和接地屏蔽层翻边结构参数组合,得到合理的套管内外电场分布,有效解决了高海拔型套管外绝缘修正后的内外电场分布均匀化问题,为550 kV SF6气体绝缘高海拔套管的绝缘结构设计提供了理论依据。 相似文献
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S. Y. Wu B. N. Tran F. Y. Davis C. L. Trent D. L. Edberg W. A. Geideman 《Integrated ferroelectrics》2013,141(3):281-291
Abstract Smart materials of lead-zirconate-titanate (PZT) piezoelectric ceramics have attracted attention in recent years for active vibration control, acoustic noise suppression, health monitoring and damage assessment. We at McDonnell Douglas Aerospace have been studying these ceramics for use as sensors and actuators in various space and aircraft structures. In this paper, we will report results of a recent study on active vibration control using monomorph PZT actuators. The experiments were performed on thin aluminum cantilever beams. Collocated and non-collocated sensors and actuators were employed. Two control techniques: the classical velocity feedback and adaptive feedback controls, were investigated. We have obtained significant damping and broadband vibration attenuation of greater than 30 dB using the classical control with the single-input single-output feedback approach. A 24 dB reduction has also been achieved using the adaptive control with the multiple-input single-output approach. Detailed experimental methods and results will be described. 相似文献