Automated Protection Performance Assessment and Enhancement

J. Jaeger¹, X.-P. Liang², R. Krebs^3*, T. Bopp³

¹FAU University, Erlangen, Germany.
²Siemens Ltd., Erlangen, Beijing, China.
³Siemens AG Germany, Erlangen, Germany.

DOI: 10.4236/jpee.2014.24071                

Abstract

New strategies and methods for assessing the security of protection systems to reduce the risk of unnecessary disturbances and blackouts are the main topic of the present paper. The system behavior of a protection system and network is analyzed and assessed as a whole. Hence, the established algorithms are capable to handle complex network structures with regard to an intelligent data management as well as data validation. Protection security assessment comprised two different aspects: on the one hand the behavior regarding dependability and security in terms of speed and sensitivity, on the other hand the behavior regarding the response on dynamic network phenomena as voltage stability and transient stability. A new automated method for assessing the dependability and security of protection systems is shown. The short-circuit simulation tool is used to provide a simulation system including network and protection devices as a whole. The handling of the large amount of resulting data is done by an intelligent visualization method like a “fingerprint” analysis. Further on the paper is focused on the protection response on dynamic network phenomena and presents innovative strategies for this investigation aspect. The structure of simulation environment will be described. Results of a case study show the application of this method on a real network. The system tool which is concluding these two aspects of protection assessment is called SIGUARD? PSA.

Keywords

Protection Security Assessment; Dependability; Security; Protection Coordination; Generic Protection Models; Dynamic Protection Simulation

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Krebs, R., Lerch, E., Ruhle, O., Gal, S., Lazar, F. and Paunesco, D. (2008) Vision 2020: Blackout Prevention by Combined Protection and Network Security Assessment. IEEE PES Conference on Conversion and Delivery of Electrical Energy in the 21st Century.
[2]	Ordacgi, M. and Solero, R.B. (2006) Minimizing Risks of Cascade Tripping, A Systematic Analysis of Component Protection. Cigre Conference, Paris, Report B5-202.
[3]	Yamashita, K., Joo, S.-K., Li, J., Zhang, P. and Liu, Ch.-Ch. (2008) Analysis, Control, and Economic Impact Assessment of Major Blackout Events. ETPEP European Transactions on Electrical Power, 18, 854-871. http://dx.doi.org/10.1002/etep.304
[4]	PSS®SINCAL. http://www.energy.siemens.com/hq/en/services/power-transmission-distribution/power-technologies-international/software-solutions/
[5]	PSS®NETOMAC. http://www.energy.siemens.com/hq/en/services/power-transmission-distribution/power-technologies-international/software-solutions/
[6]	Keil, T., Jaeger, J., Söllner, N., Bopp, T. and Krebs, R. (2008) Software Assisted Development of Protection Coordination Concepts in Nationwide Power Systems. 9th IEEE International Conference on Developments in Power System Protection. http://dx.doi.org/10.1049/cp:20080105
[7]	Jaeger, J., Keil, T., Dienstbier, A., Lund, P. and Krebs, R. (2009) Network Security Assessment an Important Task in Distribution Systems with Dispersed Generation. Proceedings of CIRED 20th International Conference on Electricity Distribution, Prague.
[8]	Jaeger, J. and Krebs, R. (2010) Automated Protection Security Assessment of Today’s and Future Power Grids. IEEE PES General Meeting.