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无线型电力故障检测指示系统在工矿企业中的应用
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作者 黄金钟 《中国西部科技》 2009年第25期51-52,共2页
工矿企业强调连续生产,如遇长时间停电,会对生产造成较大损失,如何通过采用先进的故障检测方式及监控手段,来提高配网线路的供电可靠性,实现配电网线路故障快速、准确的指示定位,使工矿企业配电网管理实现自动化、信息化,成为本文研究... 工矿企业强调连续生产,如遇长时间停电,会对生产造成较大损失,如何通过采用先进的故障检测方式及监控手段,来提高配网线路的供电可靠性,实现配电网线路故障快速、准确的指示定位,使工矿企业配电网管理实现自动化、信息化,成为本文研究的重点。 展开更多
关键词 电力自动化 配网线路 电力故障检测 精确定位
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基于红外热成像技术的电力设备故障检测 被引量:7
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作者 刘国伟 刘宇俊 杨永 《设备管理与维修》 2019年第2期87-88,共2页
红外热成像技术作为仪器诊断法的一种,近年来越来越受到电力电子行业的关注。对比电力设备故障检测中几种常用方法的,讨论红外热成像技术在电力设备故障检测中的应用及前景分析。
关键词 红外热成像技术 电力安全 电力设备故障检测
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10 kV电力电缆故障检测相关技术问题探讨
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作者 余国忠 黄超强 +2 位作者 刘俊英 陈嘉铭 宋华 《今日自动化》 2021年第5期184-185,共2页
在整个电力系统当出现中,电缆的作用是相当巨大的,可以说是电力系统的主动脉。在电力系统长期的运行过程当中,由于运行的损耗加上各种故障问题,电缆会出现一定的问题,比如老化以及过热等现象,造成供电故障的发生,因此需要对电力电缆的... 在整个电力系统当出现中,电缆的作用是相当巨大的,可以说是电力系统的主动脉。在电力系统长期的运行过程当中,由于运行的损耗加上各种故障问题,电缆会出现一定的问题,比如老化以及过热等现象,造成供电故障的发生,因此需要对电力电缆的故障检测法进行分析,并且采取针对性的措施解决。文章首先对10 kV电力电缆故障原因和分类进行了分析,其次对10 kV电力电缆故障的检测方法进行了分析。最后以实例进行了说明。 展开更多
关键词 电力电缆 故障 检测技术
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基于局域网的电子电路故障检测仿真学习平台
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作者 王启伟 赵嘉琪 杨佰强 《黑龙江科技信息》 2015年第23期57-,共1页
电力电路的故障检测工作一直都是电子电路研究人员工作的重点。本文中,笔者主要对电子电路故障检测仿真学习平台的设计和分析工作进行深入介绍和分析,并且对这一学习平台的开发程度以及功能等进行分析和探讨。并且对这一平台的设计方式... 电力电路的故障检测工作一直都是电子电路研究人员工作的重点。本文中,笔者主要对电子电路故障检测仿真学习平台的设计和分析工作进行深入介绍和分析,并且对这一学习平台的开发程度以及功能等进行分析和探讨。并且对这一平台的设计方式等进行深入介绍,不仅能够培养学生的学习能力,还可以促进学习平台的多样性。 展开更多
关键词 电力电路故障检测 仿真学习平台 局域网
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Model-Based Fault Detection of a Battery System in a Hybrid Electric Vehicle
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作者 S. Andrew Gadsden Saeid R. Habibi 《Journal of Energy and Power Engineering》 2013年第7期1344-1351,共8页
Recently, a new type of IMM (interacting multiple model) method was introduced based on the relatively new SVSF (smooth variable structure filter), and is referred to as the IMM-SVSF. The SVSF is a type of sliding... Recently, a new type of IMM (interacting multiple model) method was introduced based on the relatively new SVSF (smooth variable structure filter), and is referred to as the IMM-SVSF. The SVSF is a type of sliding mode estimator that is formulated in a predictor-corrector fashion. This strategy keeps the estimated state bounded within a region of the true state trajectory, thus creating a stable and robust estimation process. The IMM method may be utilized for fault detection and diagnosis, and is classified as a model-based method. In this paper, for the purposes of fault detection, the IMM-SVSF is applied through simulation on a simple battery system which is modeled from a hybrid electric vehicle. 展开更多
关键词 Battery system fault detection and diagnosis interacting multiple model smooth variable structure filter Kalman filter.
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Power Electronic Interface with Islanding Detection and Unbalanced Fault Ride-through Capability
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作者 Nguyen Duc Tuyen Goro Fujita +1 位作者 Toshihisa Funabashi Masakatsu Nomurat 《Journal of Energy and Power Engineering》 2012年第11期1816-1825,共10页
Power electronic interface of dispersed generation plays a very important role in connecting a dispersed generation with utility grids. A power electronic interface not only adjusts the amount of active and reactive p... Power electronic interface of dispersed generation plays a very important role in connecting a dispersed generation with utility grids. A power electronic interface not only adjusts the amount of active and reactive power injecting into a grid but also implements other importance duties as well. In this study, negative-sequence current injection has been fulfilled in three-phase power electronic interface for two important duties besides injecting reference power into utility grids. The first one is for islanding detection, and the other one is to enhance unbalance-fault ride-through capability of dispersed generation. This paper introduces a mechanism of negative-sequence injection based on controlling two separate coordinates of dq-control and explains the effect of negative-sequence injection in limiting the unbalanced currents generated from a dispersed generation. Using adaptive notch filter as a signal processing unit for the three-phase system, negative-sequence components are observed. The performance of entire control system is evaluated by time domain simulations, PSCAD/EMTDC (power systems computer aided design/electromagnetic transients including DC). 展开更多
关键词 Dispersed generation islanding detection negative-sequence components ride-through.
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