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High-speed directional comparison protection of transmission lines

High-speed directional comparison protection of transmission...

引用

IEEE General Meeting Power& Energy Society

作者： A.P. Apostolov d. tholomier S.H. Richards AREVA T&D Automation슠and Information Systems Angeles CA USA AREVA T&D Automation슠and Information Systems Paris France AREVA T&D Automation슠and Information Systems Stafford UK

Improvements of system stability and reduction in the effects of shunt type faults in transmission and bulk systems on sensitive industrial loads can be achieved through the development of protection relays with sub-cycle operating times for faults anywhere on the transmission line. State-of-the-art communications methods and advanced algorithms allow the implementation of such solutions. the paper discusses in detail a directional comparison protection system based on superimposed components directional detection. A new relay-to-relay communications protocol meets the requirements of different schemes and at the same time ensures fast operating times over different communications channels.

关键词： Protection transmission lines Protective relaying Circuit faults automation Cyclic redundancy check Protocols Circuit stability distributed parameter circuits Voltage

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High-speed directional comparison protection of transmission lines

High-speed directional comparison protection of transmission...

引用

Power tech Conference

作者： A. P. Apostolov d. tholomier S. H. Richards AREVA T&D Automation슠and Information Systems Los Angeles CA USA AREVA T&D Automation슠and Information Systems Paris France AREVA T&D Automation슠and Information Systems Stafford UK

关键词： transmission lines Protective relaying Circuit faults automation distributed parameter circuits Power system protection Cyclic redundancy check Acceleration Stability Protocols

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Impact of IEC 61850 on Power System Protection

Impact of IEC 61850 on Power System Protection

引用

IEEE PES Power systems Conference and Exposition, PSCE

作者： A. Apostolov d. tholomier AREVA T&D Automation슠and Information Systems Los Angeles CA USA AREVA T&D Automation슠and Information Systems France

IEC 61850 is a new international standard for communication networks and systems in substations that has a significant impact on the developments in power system protection. It allows the implementation of high-speed peer-to-peer communications based applications, as well as distributed protection solutions using sampled analog values. the paper describes the principles of different IEC 61850 communications based protection functions and analyses the factors that will affect their performance. It also discusses the advantages of distributed applications based on high-speed peer-to-peer communications compared with conventional hard wired schemes. Examples of comparison testing are presented at the end of the paper

关键词： IEC standards Power system protection Substation protection Standards development Peer to peer computing Substation automation Object oriented modeling Instrument transformers Communication standards testing

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IEC 61850 process bus based distributed waveform recording

IEC 61850 process bus based distributed waveform recording

引用

IEEE General Meeting Power& Energy Society

作者： A. Apostolov F. Auperrin R. Passet M. Guenego F. Gilles AREVA T&D Automation슠and Information Systems Los Angeles CA USA AREVA T&D Automation슠and Information Systems Lattes France

IEC 61850 is the new standard for communications in substations that defines process bus and substation bus communications allowing the development of distributed waveform recording systems. the paper describes the different components of such systems and the distribution of functions between the devices included in it. Multiple merging units communicate over a 100 Mb Ethernet with a central computer that receives and records current and voltage waveforms with a sampling rate of 256 samples/cycle. the samples from the different merging units is saved as a combined single COMtRAdE file. the architecture of the system, triggering criteria, system performance and analysis tools are described in the paper

关键词： IEC standards Substations Merging Communication standards Standards development Ethernet networks Voltage Sampling methods Computer architecture System performance

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Virtual testing of distance protection

Virtual testing of distance protection

引用

IEEE General Meeting Power& Energy Society

作者： A. Apostolov H. Kang AREVA T&D Automation슠and Information Systems Los Angeles CA USA AREVA T&D Automation슠and Information Systems Stafford UK

distance relays are the most commonly used protection devices in transmission systems. they require testing during different stages of relay development, commissioning, maintenance, configuration and operation analysis. the paper analyses the requirements for testing of distance relays under different abnormal conditions. It describes the conventional methods of testing and introduces a new method for virtual testing of distance relays. the virtual relay concept is described with several examples. different applications of virtual relay testing and their advantages over conventional testing are presented at the end of the paper

关键词： Protective relaying System testing Software testing Life testing Power system protection Power system relaying Voltage Application software Performance evaluation automation

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A distributed Recording System Based on IEC 61850 Process Bus

A Distributed Recording System Based on IEC 61850 Process Bu...

引用

Power systems Conference: Advanced Metering, Protection, Control, Communication, and distributed Resources, PSC

作者： A. Apostolov F. Auperrin R. Passet M. Guenego F. Gilles AREVA T&D Automation슠and Information Systems Los Angeles CA USA AREVA T&D Automation슠and Information Systems Lattes France

IEC 61850 is the new standard for communications in substations that defines process bus and substation bus communications allowing the development of distributed waveform recording systems. the paper describes the different components of such systems and the distribution of functions between the devices included in it. Multiple merging units communicate over a 100 Mb Ethernet with a central computer that receives and records current and voltage waveforms with a sampling rate of 256 samples/cycle. the samples from the different merging units are then saved as a combined single COMtRAdE file. the architecture of the system, triggering criteria, system performance and analysis tools are described in the paper

关键词： IEC standards Substations Merging Communication standards Standards development Ethernet networks Voltage Sampling methods Computer architecture System performance

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Influence of protection on power quality for system with distributed generation units

Influence of protection on power quality for system with dis...

引用

IEEE/PES transmission and distribution Conference and Exposition: Latin America

作者： W. Kong L. Xie Z.Q. Bo AREVA T&D Automation슠and Information Systems UK

Power quality is extensively affected by power system faults. One of the power quality events is the voltage sag. the depth of the voltage sag is determined by the types of fault, fault location, system configuration, and load representation, while the duration of voltage sag can be distinctly impacted by protection systems. In the paper, the accelerated protection strategies are presented to reduce the voltage sag duration. the fixed time delay zone of the relay on the system side can be accelerated depending on the second variations of the current sequence components; which on the distributed generation units side can be accelerated by the undervoltage. Simulation results show that the acceleration of the directional overcurrent protection scheme can effectively reduce the duration of fault, thus reducing the voltage sag duration, and the reasonable micro-grid operation may benefit the voltage recover to avoid the large scale loss of load.

关键词： Relays Voltage fluctuations Circuit faults Acceleration Voltage measurement Switches Current measurement

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Simplifying the configuration of multifunctional protection relays

Simplifying the configuration of multifunctional protection ...

引用

Annual Conference for Protective Relay Engineers

作者： A. Apostolov d. tholomier S. Richards AREVA T&D Automation슠and Information Systems USA

the paper analyzes the functionality of state-of-the-art protection relays and presents solutions that simplify their configuration. Visibility control and graphical user interface are some of the tools that can help reduce engineering time and probability for costly errors. Some features that automatically calculate relay settings are also described in the paper. IEC 61850 related configuration settings are also discussed.

关键词： Protective relaying Substation protection Power system protection Power system relaying Wiring Microprocessors Automatic control IEC standards Logic Instrument transformers

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IEC 61850 distributed analog values applications in substation automation systems

IEC 61850 distributed analog values applications in substati...

引用

IEEE General Meeting Power& Energy Society

作者： A.P. Apostolov AREVA T&D Automation슠and Information Systems USA

IEC 61850 is already an approved international standard for substation communications. It introduces multiple capabilities that allow the development of a new range of substation automation applications. the paper discusses in detail the distributed analog values defined by the standard and presents some examples of how they can be used in advanced applications.

关键词： IEC standards Substation automation Switches Ethernet networks Communication switching Substation protection Communication system control Communication standards Local area networks Automatic control

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Model Based design for Power systems Protection Relays, Using Matlab & Simulink

Model Based Design for Power Systems Protection Relays, Usin...

引用

2008 IEt 9th International Conference on developments in Power System Protection (dPSP 2008)

作者： B. Kirby H. Kang AREVA T&D Automation슠and Information Systems Stafford UK

In the world of power system relays, there have been significant changes in the technology used to implement the protection; electro-mechanical relays, static relays, digital relays and numerical relays have all been developed to provide the required protection and control. However, the development process for these has by and large remained a manual, document led process. this inevitably leads to delays, interpretation errors and omissions which are often not identified until late in the process - when it is time consuming and expensive to change the design. Furthermore, the design has to be verified and validated from requirements through to the final implementation. Manual processes make this a laborious and thankless task. By utilising the powerful and flexible model based design process allowed by MAtLABreg & Simulinkreg, this paper will show how complex and innovative new working methods can be developed to improve the design cycle. these will allow rapid modeling and testing of algorithms, before committing to the expense of development for the final hardware platform, and the resulting cost benefits achieved by avoiding late changes to the design. Meanwhile, consistent behaviour can be confirmed and demonstrated at all stages.

关键词： Mathematical model Relays Guidelines Computer languages Libraries Power systems Automotive engineering

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