电力系统自动化2018，Vol.42Issue(10)：135-142,8.DOI:10.7500/AEPS20170920020
湖南电网山火告警风险及故障时间间隔分布规律
Distribution Characteristics of Wildfire Warning Risk and Fault Interval for Hunan Power Grid
摘要
Abstract
The research of the fault law for transmission line has great significant in the state grid maintenance.Firstly, according to the widely monitoring data of wildfire warning and fault data of transmission line in Hunan grid,a study has been conducted on the time clustering characteristic of the wildfire warning risk and fault for transmission line of Hunan power grid, which finds that the number of wildfire warnings risk of transmission line per day follows a power law distribution and the probability distribution of the time interval-frequency including all the triggering factors is verified to satisfy the exponential relationship.Then,the self-similarity of faults time sequences for transmission lines is certificated based on the Allan factor and Fano factor.Further analysis shows that the cumulative probability distribution of time interval-frequency for transmission line faults caused by different natural hazards,such as wildfire,lightning,ice disaster,follows a piecewise power law distribution.The dynamical properties with two time scales of transmission line faults are analyzed.Finally,the research results obtained can provide the theoretical reference for the prediction of wildfire warning risk and faults of transmission line.关键词
输电线路/自然灾害/时间间隔/指数分布/幂率分布/重现期/丛集性Key words
transmission line/natural hazards/time interval/exponential distribution/power-law distribution/return period/time-clustering characteristics引用本文复制引用
周特军,陆佳政,吴传平,李波,刘毓..湖南电网山火告警风险及故障时间间隔分布规律[J].电力系统自动化,2018,42(10):135-142,8.基金项目
国家重点研发计划资助项目(2016YFC08001) （2016YFC08001）
国家电网公司科技项目(5216A016000G).This work is supported by National Key R&D Program of China(No.2016YFC08001)and State Grid Corporation of China(No.5216A016000G). （5216A016000G）
