基于三角图法的输电线路物理脆弱性评估及分类  

Physical vulnerability assessment and classification of the transmission line based on the triangle methodology

作　　者：门永生[1,2] 金龙哲[1] 于振 赵宏波 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]国网智能电网研究院,北京102209

出　　处：《安全与环境学报》2015年第2期15-19,共5页Journal of Safety and Environment

摘　　要：输电线路在自然灾害或人为破坏等外力干扰下,易受损坏或发生故障,致使电力系统全部或部分功能丧失。将输电线路物理脆弱性定位于"功能失效",从人与环境对输电线路造成的压力、输电线路自身状态及功能失效后的响应等方面进行分析,构建输电线路物理脆弱性评估指标体系;借鉴已有评估方法,提出基于压力指数、状态指数和响应指数的评估模型;应用三角图法对输电线路进行物理脆弱性评估和分类,分析影响输电线路物理脆弱性的主要因素。以某500 k V输电线路为例进行实例分析,结果表明影响该输电线路脆弱性关键因素为压力和响应。The paper takes it as its study object to make a physical vulnerability assessment and classification of the transmission line based on the triangle methodological approach. As it can be seen, the infrastructure of the power transmission line has to be exposed to the open-space surroundings all the year around and hit by various natural disasters and man-made interventions. In such a situation, the power transmission line has often turned to be the victim of the thunder struck or hit brought about by human activities, and, leading to serious impacts on the natural, economic and social life. Attempt- ing to make a clear-cut description of the power line failure and its physical vulnerability, we have proposed a definition of ＂physical vulnerability of transmission line＂ first in this paper based on the study of the various situations of such vulnerability in different ways on the power system＇ s vulnerable nature. And, next, we have devel- oped an evaluation index system of the physical vulnerability of the line while considering the likely disasters by such failures due to hu-man beings＇ disturbance or the damage of the equipment or installa- tions, in addition to the likely responses of the local people after such accidents. In common methods we have also brought about a new idea of calculating the pressure index, the status index, the response in- dex and the total vulnerability index, and formulated a triangular dia- gram of pressure, status and response in accordance with the relative proportion. The aforementioned triangle methodology has been applied to evaluate and classify the physical vulnerability consequences of the transmission line sb as to identify the main factors that affect the vul- nerability more profoundly. And, last of all, we have made evalua- tion of the physical vulnerability of 500 kV transmission line in Shanghai and summarized the status in situ quantitatively as a case study results of applying the index tablished by us. Through a series system and assessment method es- of repe

关 键 词：安全管理工程 输电线路 物理脆弱性 评估 三角图法 

分 类 号：X921[环境科学与工程—安全科学]