Digital Simulator Performance Requirements for Relay Testing

Kezunovic, Mladen; Pickett, B.; Adamiak, Mark; Alexander, G.; Carr, K.R.; Chirco, G.; Esztergalyos, J.; Jerosolimski, M.; Kotheimer, W.C.; Marttila, R.J.; McElray, J.L.; McKenna, S.M.; McLaren, P.G.; Murphy, R.J.; Nordstrom, J.; Ryan, Rita M.; Skendžić, V.; Thompson, S.I.; Tziouvaras, D.A.; Phillips, Fred M.; Sakaguchi, Toshiaki; Sollero, R.B.

doi:10.1109/61.660855

Cited by 21 publications

(6 citation statements)

References 15 publications

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“…The Real Time Digital Simulator (RTDS) is a fully digital electromagnetic transient power system simulator used to conduct close-loop testing of physical devices such as protection equipment and control equipment; to perform analytical system studies and to educate operators, engineers and students [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. It is a cost-effective replacement for transient network analyzers and analogue/hybrid simulators.…”

Section: A Rtds Systemmentioning

confidence: 99%

A Real Time Digital Simulation System for Testing of Integrated Protection Schemes

Klimek

Ren

et al. 2008

2008 Joint International Conference on Power System Technology and IEEE Power India Conference

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This paper presents the design of new real time digital simulator (RTDS) based novel relay test systems. The background of the developments in protection relays and their associated technologies, such as optical transducers and IEC 61850, are introduced. The new developments in RTDS systems are described. It is shown that the recent developments in transducers and communication technology will have great impacts to the developments of protection relays and their associated RTDS based relay test systems. The paper further describes the existing, new developments and future trend in the development of protection relays and their associated RTDS systems. Index Terms--Integrated Protection, Real-time DigitalSimulator, Relay Testing. such as conventional CTs and VTs, optical combined sensors and electronic combined sensors. The analogue and digital signals measured are converted into optical format and sent to the central protection relay through the redundant optical network. The unit also receives and executes control signals from the relay through the control circuit. Secondly an optical communication network interfaces not only to measurement and control unit, and the relay, but also to a number of other equipment, such as communication gateway, human machine interface and GPS clock, etc. The use of standard communication protocol for the network will enable IEDs from different manufacturers to be easily interfaced to the

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Section: A Rtds Systemmentioning

confidence: 99%

A Real Time Digital Simulation System for Testing of Integrated Protection Schemes

Klimek

Ren

et al. 2008

2008 Joint International Conference on Power System Technology and IEEE Power India Conference

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“…Maximize such that (1) where is the absolute value of the error in the actual and calculated value of the decision parameter, is a vector of m shape variables, are " " number of inequality constraints, and represents the th shape variable with its lower and upper bounds specified as and , respectively. A schematic block diagram to implement (1) for generating the optimal test waveforms is shown in Fig.…”

Section: Problem Formulationmentioning

confidence: 99%

“…This approach is generally followed when the objective is to test the relay itself, independent of the operation of its auxiliary transformers [20]. However, when testing a relay along with its auxiliary transformers, it is important to select appropriate conditioning amplifiers [1].…”

Section: A Hardwarementioning

confidence: 99%

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A digital simulator for determining the performance limits of computer relays

Mir

Al-Saleh

2002

IEEE Trans. Power Delivery

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Unlike most other digital simulators that generate test waveforms for specific system configurations, playback previously recorded fault waveforms, or randomly generate artificial waveforms, the digital simulator presented in this paper generates the worst case waveforms for specified bounds on noise components present in the relay input signals. As a result, the performance limits of a computer relay can be determined, for specified bounds on its noise components, by performing a single test only. The parameters that define the worst case waveforms are obtained by utilizing a modified univariate search algorithm. The PC-based simulator was implemented using a general-purpose multifunction card and a graphical programming package called Visual Designer. It did not require any text-based programming for tasks such as interfacing, digital-to-analog conversion, and outputting the discrete analog values of the generated waveform under hardware control. For demonstrating the operation of the digital simulator, a computer relay was also developed in the laboratory and its performance limits were determined.

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“…To validate whether the PM with protection programs is right or not, the testing signals, high-frequency transient voltage and current should be provided. So the TSG is developed as a playback digital simulator [8], which consists of another PC and a piece of signal source card. And Laboratory Virtual Instrument Engineering Workbench (Labview) is used for controlling software.…”

Section: Composition Of Hardware Platformmentioning

confidence: 99%

A Development Platform of Transient Based Protection for EHV Transmission Lines

Zhou

Jian-dong

Zhang

et al.

2005 IEEE/PES Transmission &Amp;amp; Distribution Conference &Amp;amp; Exposition: Asia and Pacific

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In order to dynamically test the algorithms of transient based protection for EHV transmission lines, this paper presents a hardware platform, which is composed of two parts. The first part, transient based protection Prototype Machine (PM), is essentially a computer-based relay that can sample transient signals and execute protection programs in a real time way. The second part, power system Transient Signal Generator (TSG), is set up to provide high-frequency transient signals for PM testing. Virtual instrument technique is adopted as controlling software to accelerate development speed and improve the performance of the whole hardware platform. Simulation studies, with responses to various systems and fault conditions, have shown that the first part of the platform is capable of sampling continuously transient signals with 400 KHz and running real-time protection calculation, and that the second part is able to reproduce transient signals without distortion.

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Digital Simulator Performance Requirements for Relay Testing

Cited by 21 publications

References 15 publications

A Real Time Digital Simulation System for Testing of Integrated Protection Schemes

A Real Time Digital Simulation System for Testing of Integrated Protection Schemes

A digital simulator for determining the performance limits of computer relays

A Development Platform of Transient Based Protection for EHV Transmission Lines

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