检索结果-南通市图书馆

Relay performance verification using fault event records

Protection and Control of Modern Power Systems 2018年第1期3卷 235-244页

作者： Swagata Das sundaravaradan navalpakkam ananthan Surya Santoso Schweitzer Engineering Laboratories PullmanUSA Department of Electrical and Computer Engineering The University of Texas at AustinAustinUSA

Introduction:Event reports recorded by intelligent electronic devices(IEDs)such as digital relays and fault recorders during disturbances depict the status and system parameters of the power *** relay settings and unknown system parameters can lead to relay misoperation but information regarding these are available by performing a comprehensive analysis of fault ***,it is necessary to regularly make a comprehensive assessment of the functioning of the relay to ensure reliable *** description:The objective of this paper is to demonstrate various aspects of evaluating relay performance and verifying circuit parameters which are used in relay settings using field data in two case *** and Evaluation:While scrutinizing the relay’s operation,this paper also presents key insights on verifying circuit parameters using the same relay event ***:The lessons learned from the case studies presented in this paper will equip a protection engineer to inspect the operation of a relay during a transmission line fault,help gain a better understanding of the fault event and take possible actions to prevent future occurrence of similar events.

关键词： Event report Fault analysis Relay

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Estimating zero-sequence impedance of three-terminal transmission line and Thevenin impedance using relay measurement data

引用

Protection and Control of Modern Power Systems 2018年第1期3卷 382-391页

Current and voltage waveforms recorded by intelligent electronic devices(IEDs)are more useful than just performing post-fault *** objective of this paper is to present techniques to estimate the zero-sequence line impedance of all sections of a three-terminal line and the Thevenin equivalent impedance of the transmission network upstream from the monitoring location using protective relay data collected during short-circuit ground fault *** relaying data from all three terminals may not be always ***,the data from each terminal may be unsynchronized and collected at different sampling rates with dissimilar fault time ***,this paper presents approaches which use unsynchronized measurement data from all the terminals as well as data from only two terminals to estimate the zero-sequence line impedance of all the sections of a three-terminal *** algorithm to calculate positive-,negative-and zero-sequence Thevenin impedance of the upstream transmission network has also been presented in this *** efficacy of the proposed algorithms are demonstrated using a test *** magnitude error percentage in determining the zero-sequence impedance was less than 1%in the test case presented.

关键词： Zero-sequence Three-terminal line Thevenin Impedance

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：