电力系统及其自动化学报2011，Vol.23Issue(6)：11-15,28,6.
多气象因素组合的输电线路风险分析
Risk Analysis Method for Transmission Line Combining of Various Meteorological Factors
摘要
Abstract
Failure rate of transmission line and reliability of power system are significantly affected by meteorological factors. In view of the complexity and variability of meteorological factors, this paper presents a failure rate model of transmission line in different meteorological condition with different meteorological grades, and a risk analysis method for transmission line considering multiple meteorological factors based on gray fuzzy theory. This method takes eight meteorological conditions as an evaluation standard, and establishes risk degree e-valuation system for transmission line including four evaluation grades. Triangular membership function is built up to describe the fuzzy relation among evaluation factors and risk grades, and the incredible degree of fuzzy relation is described by gray scale value of pixel. Based on the gray fuzzy comprehensive evaluation is conducted, and the evaluation result closer to practice is achieved, providing basis for transmission line risk warning and maintenance strategy. Through the risk analysis in a certain power supply bureau, the effectiveness of the proposed method is validated.关键词
输电线路/气象等级/故障率/灰色模糊/风险分析Key words
transmission line/meteorological grades/failure rate/gray fuzzy/risk analysis分类
信息技术与安全科学引用本文复制引用
熊小伏,王尉军,于洋,沈智健,程韧俐,戴志勇..多气象因素组合的输电线路风险分析[J].电力系统及其自动化学报,2011,23(6):11-15,28,6.基金项目
国家自然科学基金资助项目(50777068) （50777068）
重庆大学输配电国家重点实验室资助项目(2007DA10512709202) （2007DA10512709202）
