Abstract

LLANO, Luis E  and  MORENO, Julián. On-line analysis of fault events in power transmission systems using SOE, fuzzy logic and expert systems. Rev. Téc. Ing. Univ. Zulia [online]. 2013, vol.36, n.2, pp.174-182. ISSN 0254-0770.

The aim of this paper is to present an integrated model to perform an on-line faults analysis in power transmission systems and more specifically in high voltage transmission lines using SOE records from SCADA. In order to do that, the proposed solution divides the problem in two parts. The first one is the faults detection from SOE and the selection of the corresponding useful information; the second one is the analysis itself that gives as result the event sequence and equipments operations such as protective relays. For these two parts two corresponding modules were designed. The first one uses a fuzzy inference system that monitors SOE in sliding windows to determine the possible occurrence of events. The second one uses a rule based expert system to infer what happened during those events. Both modules were implemented on a software application and successfully validated with real SOE records collected within the Colombian transmission system, specifically from Interconexión Eléctrica S.A. E.S.P.-ISA company.

Keywords : on-line fault analysis; power transmission systems; fuzzy inference systems; rule based expert systems.

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