Improved SEC model based evaluation approach for design scheme of the new generation smart substation

摘要

When evaluating a substation design scheme, the existing evaluation methods have not consider a series of uncertainty factors such as the number of faults, the cost of operation, the economic losses caused by the failure of power outages and so on in the life cycle, meanwhile, the evaluation methods of safety and efficiency in the design scheme of substation are also insufficient. In this paper, by comprehensive considering the above uncertain variables, safety, efficiency and cost of the design scheme, an uncertainty evaluation model is proposed. In the proposed model, the weight of each index is determined by entropy-weighted fuzzy comprehensive evaluation method and then the Monte Carlo simulation method is used to solve the model. The example shows that the proposed method is effective for the new generation smart substation comprehensive assessment, so as to provide guidance for the planning and construction of the new generation smart substation.