基于改进DEAHP模型的支路综合脆弱性评估方法  

A Branch Comprehensive Vulnerability Assessment Method Based on Improved DEAHP Model

作　　者：王羽佳[1] 李华强[1] 刘沛清[2] 王兰[1] 

机构地区：[1]四川大学电气信息学院,四川省成都市610065 [2]国网河北省电力公司石家庄供电分公司,河北省石家庄市050051

出　　处：《电网技术》2016年第4期1249-1256,共8页Power System Technology

摘　　要：电力系统脆弱支路辨识,对系统安全运行、防止灾难性事故发生具有重要意义。针对现有脆弱支路评估方法存在的评估角度单一,综合指标权重选取过于主观的问题,文中综合脆弱性的原因分析与后果评估2个角度,建立反映支路抗干扰能力和影响力的指标集;基于改进的带层次分析法约束锥的数据包络分析模型进行多指标综合,得到了既考虑主观偏好又考虑客观数据的支路综合脆弱性评估指标,构建了多层次多角度的支路脆弱性评估指标体系,并基于此提出了一种新的支路综合脆弱性评估方法。仿真结果证明了该方法的全面性与有效性。Identification of branch vulnerability is of great significance for safe operation of power system and prevention of catastrophic failures. Most of existing branch vulnerability assessment methods fail to present a full view and weight-based comprehensive indices are too subjective. To solve these problems, this paper starts analysis from perspective of cause analysis and consequence evaluation of vulnerability, and presents evaluation indices reflecting anti-interference ability and influence of branches. Then branch comprehensive vulnerability index, considering both subjective preference and objective data, is generated with improved data envelopment analysis model with analytic hierarchy process restraint cone. Multi-layer and multi-angle branch vulnerability assessment index system is built. On this basis, a new branch comprehensive vulnerability assessment method is proposed. Simulation results show that this method is comprehensive and effective.

关 键 词：电力系统脆弱性 抗干扰能力 影响力 层次分析法 数据包络分析 支路综合脆弱性 

分 类 号：TM72[电气工程—电力系统及自动化]