Abstract
The new generation smart substation has become the future development direction of substation. At present, the reliability assessment method of the new generation smart substation are based on substation system itself or relay protection system separately, without considering the comprehensive influence of these two systems, leading high reliability index obtained. Based on minimum path algorithm, this paper firstly establishes the reliability assessment model of the new generation smart substation considering relay protection system. Then, an equivalent reliability index considering the comprehensive influence of the primary system and relay protection system is proposed. Finally, the proposed model and approach are tested on a real new generation smart substation..
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