基于多指标综合法的核心骨干网架生存性评估研究

摘要

The survivability research of core backbone grid can ensure the important load protection of power grid in the face of extreme natural disasters.In order to guide the planning and construction of the core backbone network effectively,the survivability evaluation model of core grid is established.Survivability index system of hierarchy is set up from resistance,smoothness,safety and recovery.Two level index evaluation method is adopted based on information entropy,one level index synthesis method is adopted based on principal component analysis.Finally,IEEE118 node system is used to verify the validity of the evaluation model and method.%核心骨干网架的生存性研究可以解决电网在面对极端自然灾害时重要负荷保障问题.为了有效指导核心骨干网架的规划与建设,建立了核心骨干网架的生存性评估模型.该评估模型从抵抗性、畅通性、安全性和恢复性4个角度出发,建立了层次化的生存性指标体系,并采用基于信息熵的二级指标评估方法和基于主成分分析的一级指标综合方法求解生存性评估模型.最后采用IEEE118节点系统进行算例分析,验证该评估模型与方法的有效性.