2007 60th Annual Conference for Protective Relay Engineers最新文献_第2页

Arc Flash Mitigation Through Use Of Voltage Controlled/Voltage Restrained Overcurrent Elements 通过使用电压控制/电压抑制过流元件缓解弧闪

2007 60th Annual Conference for Protective Relay Engineers Pub Date : 2007-03-27 DOI: 10.1109/CPRE.2007.359901

D. Beach, G. Johnson

引用次数: 2

4160 Volt Bus Transfer System Re-Design at Reliant Energy's Cheswick Generating Station 信实能源公司切斯威克发电站4160伏总线传输系统的重新设计

2007 60th Annual Conference for Protective Relay Engineers Pub Date : 2007-03-27 DOI: 10.1109/CPRE.2007.359900

D. J. Hansen, C. Bell, G.W. Yerger, K.E. Shuman

引用次数: 3

Mitigation of Arc Flash hazard by using protection solution 使用保护液减轻电弧闪蒸危害

2007 60th Annual Conference for Protective Relay Engineers Pub Date : 2007-03-27 DOI: 10.1109/CPRE.2007.359904

J. Holbach

引用次数: 1

Advanced Multi-terminal Line Current Differential Relaying and Applications 先进多端子线路电流差动继电器及其应用

2007 60th Annual Conference for Protective Relay Engineers Pub Date : 2007-03-27 DOI: 10.1109/CPRE.2007.359894

R. Hedding, F. Mekić

引用次数: 9

Considerations When Applying Microprocessor Relays In Chemically Harsh Environments 在化学条件恶劣的环境中应用微处理器继电器时的注意事项

2007 60th Annual Conference for Protective Relay Engineers Pub Date : 2007-03-27 DOI: 10.1109/CPRE.2007.359898

R. Midence, C. Cosoreanu, C. Wester

{"title":"Considerations When Applying Microprocessor Relays In Chemically Harsh Environments","authors":"R. Midence, C. Cosoreanu, C. Wester","doi":"10.1109/CPRE.2007.359898","DOIUrl":"https://doi.org/10.1109/CPRE.2007.359898","url":null,"abstract":"The evolution of microprocessor based protection, monitoring and control devices in industrial applications has resulted from a need for smaller, more cost effective protection devices that can provide substantially more metering, monitoring, and reporting functionality than electro-mechanical or solid-state relays. These requirements have led to the use of surface mount components, replacing the larger, more expensive through-hole components. While helping to meet the requirements of the industrial market, the use of surface mount (SMT) technology has produced technical challenges directly related to the industrial environment for which they were designed. Harsh chemical environments, specifically environments that contain gaseous sulphide, can result in the corrosion and ultimate failure of the surface mount components used to manufacture microprocessor-based devices. Although the terminology \"harsh chemical environment\" is commonly used to describe applications known to contain chemical contamination, it has been established that the levels of hydrogen sulphide required to cause failures in surface mount components is scientifically lower than previously thought. This paper will serve to highlight the technical challenges associated with implementing microprocessor-based devices in industrial environments where there is the potential for hydrogen sulphide or other corrosive gas contamination. Among the issues to be discussed are: 1) how hydrogen sulphide effects microprocessor based devices, 2) sources and levels of hydrogen sulphide causing component failure and 3) prevention and containment solutions for industrial applications","PeriodicalId":438320,"journal":{"name":"2007 60th Annual Conference for Protective Relay Engineers","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132848840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Standardization of Distribution Protection System Based on the New Generation of Microprocessor Relays 基于新一代微处理器继电器的配电保护系统标准化

2007 60th Annual Conference for Protective Relay Engineers Pub Date : 2007-03-27 DOI: 10.1109/CPRE.2007.359915

G. Leishman, M. Thakur

{"title":"Standardization of Distribution Protection System Based on the New Generation of Microprocessor Relays","authors":"G. Leishman, M. Thakur","doi":"10.1109/CPRE.2007.359915","DOIUrl":"https://doi.org/10.1109/CPRE.2007.359915","url":null,"abstract":"AEP's distribution protection systems which generally include transformers, bus bar, feeders and capacitor banks on low voltage levels, and vary in applications such as fuse saving scheme, high set IOC restoration/lockout scheme, UV load shedding scheme, X'mer high side circuit switcher and low side circuit breaker control scheme, and bus-1 shot operation (reliability consideration) scheme, to name a few, pose constant challenges to relay protection engineers in designing standard protection and control (P&C) schemes. The new generation of microprocessor relays offers enhanced protection, control and automation features such as flexible programming, programmable pushbuttons and non volatile latches etc. to replace traditional breaker controls, cut-in/cut-out switches, metering, and annunciation panels etc. These new elements/functions provide new opportunities to P&C engineers in developing standard P&C schemes for their distribution system in one relay box. This paper describes in detail the innovative design stages of the development of standardized distribution P&C solutions based on the new generation of microprocessor relays. Each standardized distribution P&C solution offers a complete set of elementary drawings, relay setting templates, relay application guide and relay point list assignments for SCADA. This paper will also present detailed case studies of how AEP leveraged the new generation of microprocessor relays to successfully implement standardized P&C solutions across its various regions of operations and practices","PeriodicalId":438320,"journal":{"name":"2007 60th Annual Conference for Protective Relay Engineers","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133718891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Transformer Fault Analysis Using Event Oscillography 用事件示波器分析变压器故障

2007 60th Annual Conference for Protective Relay Engineers Pub Date : 2007-03-27 DOI: 10.1109/CPRE.2007.359917

C. Labuschagne, N. Fischer

{"title":"Transformer Fault Analysis Using Event Oscillography","authors":"C. Labuschagne, N. Fischer","doi":"10.1109/CPRE.2007.359917","DOIUrl":"https://doi.org/10.1109/CPRE.2007.359917","url":null,"abstract":"Transformer differential protection operates on Kirchhoff's well-known law that states, \"the sum of currents entering and leaving a point is zero\". Although Kirchhoff's law is well understood, the implementation of the law in transformer differential protection involves many practical considerations such as current transformer (CT) polarity, phase-angle correction, zero-sequence removal, and CT grounding. Still, even correctly implemented transformer differential protection misoperates occasionally, resulting from conditions such as CT saturation during heavy through faults. Whereas electromechanical and electronic relays provide no or very little fault information, numerical relays provide an abundance of information. However, the analyst must still select the correct fault information from this abundance of information to perform useful fault analysis. This paper demonstrates how to begin analysis of such events by using real-life oscillographic data and going through a step-by-step analysis of the relay algorithm using a mathematical relay model. Relay engineers can use this paper as a reference for analyzing transformer oscillography in a systematic and logical manner","PeriodicalId":438320,"journal":{"name":"2007 60th Annual Conference for Protective Relay Engineers","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121320105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Distance Relay Response to Transformer Energization: Problems and Solutions 距离继电器对变压器通电的响应:问题与解决方法

2007 60th Annual Conference for Protective Relay Engineers Pub Date : 2007-03-27 DOI: 10.1109/CPRE.2007.359895

J. Mooney, S. Samineni

{"title":"Distance Relay Response to Transformer Energization: Problems and Solutions","authors":"J. Mooney, S. Samineni","doi":"10.1109/CPRE.2007.359895","DOIUrl":"https://doi.org/10.1109/CPRE.2007.359895","url":null,"abstract":"Modern distance relays use various filtering algorithms to extract the fundamental frequency component of power system voltage and current waveforms. The relays then use the filtered voltages and currents in such numerous algorithms as distance, overcurrent, under/overvoltage, and frequency. Use of filtered voltages and currents generally provides a protective relay immunity to power system harmonics such as those resulting from transformer energization. This paper focuses on the application of distance relays on or near power transformers. It reviews digital filtering algorithms and shows both digital filter and distance element algorithm responses to power transformer inrush. Without careful setting of digital relays in such applications, power transformer inrush can cause distance relay measurement errors and unwanted operations. This paper provides guidelines for setting distance relays applied directly on a power transformer and for applications of relays to a line on which transformers are connected. The paper demonstrates these guidelines through the use of actual power system events and events modeled on a real-time digital simulator","PeriodicalId":438320,"journal":{"name":"2007 60th Annual Conference for Protective Relay Engineers","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124406022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Integration of Substation Data 变电站数据集成

2007 60th Annual Conference for Protective Relay Engineers Pub Date : 2007-03-27 DOI: 10.3182/20110828-6-IT-1002.02654

M. Kezunovic, D. Sevcik, R. Lunsford, T. Popovic

{"title":"Integration of Substation Data","authors":"M. Kezunovic, D. Sevcik, R. Lunsford, T. Popovic","doi":"10.3182/20110828-6-IT-1002.02654","DOIUrl":"https://doi.org/10.3182/20110828-6-IT-1002.02654","url":null,"abstract":"The paper introduces a concept for integration of substation IED data, primarily coming from digital protective relays (DPRs) and digital fault recorders (DFRs). Modern substations are equipped with different types of IEDs. DFRs are traditionally used to capture data from various events and disturbances in the power system that may need to be analyzed. Most of the modern IEDs such as digital relays, power quality meters, and sequence of event recorders can offer data recording function that is quite similar to that of DFRs. In some recent substation designs there are cases where DFR function is replaced by an equivalent function provided by DPRs. There are also cases when both DFRs and DPRs are used and configured to record the same events. In this case records from DPRs are used as a redundant source for event analysis. The paper addresses main requirements for integration of substation data: communication and automated IED data retrieval, unifying event data file formats, verification of event data content, and proper handling of the system configuration parameters. Examples of substation data integration using the proposed concept are discussed through expansion of an existing DFR data integration and analysis system and through introduction of data coming from different substation IEDs. Digital simulator was used to evaluate the concept in the example with multiple IED types","PeriodicalId":438320,"journal":{"name":"2007 60th Annual Conference for Protective Relay Engineers","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127324908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

CT Saturation in Industrial Applications - Analysis and Application Guidelines 工业应用中的CT饱和。分析和应用指南

2007 60th Annual Conference for Protective Relay Engineers Pub Date : 2007-03-27 DOI: 10.1109/CPRE.2007.359913

B. Kasztenny, J. Mazereeuw, H. DoCarmo

引用次数: 23