Automated System-Wide Protection System Performance Review and Setting Improvement

Bopp T, Krebs R, Ganjavi R, Ntsin B, Dauer M, Jäger J (2014)

Publication Language: English

Publication Type: Conference contribution

Publication year: 2014

Series: OP023

Conference Proceedings Title: pacworld

Event location: Zagreb HR

Abstract

This paper presents a new validated method for evaluating the protection system performance and determining improved sets of new settings. The protection system of a nation-wide power system has been reviewed and improved automatically by a computer-based assessment and a rule-based relay setting calculation. Key findings derived from the practical application were summarized.

Protection coordination and verification of settings through separate simulations is getting increasingly complex. Conventional protection coordination and simulation tools reach their limits of practical applicability for fast developing networks and changing operating conditions. The absence of efficient tools is one reason that systematic evaluations of the protection systems performance cannot be carried out. New automated protection security assessment solutions can overcome existing limitations and allow the fast and systematic performance assessment of the protection system.

This paper presents a novel approach to assess the adequacy and limitations of protection settings and schemes. It facilitates the verification of pick-up safety and selectivity of protection settings for large numbers of different fault and operation scenarios that have to be examined with respect to the different characteristics of the protection devices. The presented solution is capable to handle large and complex network structures, and also to analyze the system behavior of the protection system and network as a whole. New concise result visualizations were developed to support protection engineers and operators to identify potential weak points and limitations of the protection schemes and settings.

The paper summarizes key findings and lessons learnt from an automated systematic protection performance assessment and enhancement project performed on a nationwide transmission system. It demonstrates how the applied solution can help to assure and improve the quality of protection settings through event-triggered or regular application.


The in-depth evaluation allows the pinpointing of false settings in individual relays and for various different operating and fault conditions. If false or improvable settings are detected then the solution supports the calculation of new improved protection settings. To enhance quality control, a new set of settings can be validated and verified through simulation before application in order to maximize network utilization and grid reliability by reducing the risk of unwanted protection actions and cascading events.

Authors with CRIS profile

Maximilian Dauer Professur für Elektrische Energieversorgung Johann Jäger Professur für Elektrische Energieversorgung

Involved external institutions

Siemens AG DE Germany (DE)

How to cite

APA:

Bopp, T., Krebs, R., Ganjavi, R., Ntsin, B., Dauer, M., & Jäger, J. (2014). Automated System-Wide Protection System Performance Review and Setting Improvement. In pacworld. Zagreb, HR.

MLA:

Bopp, Thomas, et al. "Automated System-Wide Protection System Performance Review and Setting Improvement." Proceedings of the pacworld, Protection Automation & Control World Conference, Zagreb 2014.

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