ga优化ts-fnn的架空线路荷载风险预测 risk forecast of t-s fuzzy neural network by optimized ga for overhead line loads.pdfVIP
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ga优化ts-fnn的架空线路荷载风险预测 risk forecast of t-s fuzzy neural network by optimized ga for overhead line loads
本文引用格式:倪良华,肖李俊,吕干云,等 .GA 优化 TS-FNN 的架空线路荷载风险预测 [J]. 新型工业化,2016,6(7):1-8.
DOI: 10.19335/ki.2095-6649.2016.07.001
GA优化TS-FNN的架空线路荷载风险预测
倪良华 1 ,肖李俊 1 ,吕干云 1 ,汤智谦 2 ,朱天宇 1
(1.南京工程学院电力工程学院,江苏南京 211167;2.镇江供电公司,江苏 镇江 212001)
摘要:极端天气下组合荷载的冲击对架空线的运行可靠性产生严重影响,研究架空线路风险预测与评估在预
防线路事故中具有现实意义。架空线路荷载风险预测属于求解强耦合时变非线性系统问题,难以建立精确的数学
模型求解。基于线路荷载 - 强度的随机特性与干涉原理以及模糊预测理论,建立了基于 GA 优化 T-S 模糊神经网
络的线路风险预测模型,提取极端天气下的气象信息典型特征值风速、覆冰厚度、降雨量、气温作为模型输入量,
以线路失效概率划分的时间尺度上线路的荷载风险状态作为预测输出量,并采用遗传算法对模糊神经网络参数进
行优化。同采用传统理论计算模型和自适应模糊神经网络模型相比,所建立模型具有计算速度快、预测准确度高
的优点。具体应用实例验证了模型的实用性和高效性。
关键词:架空线路;荷载风险预测;失效概率;T-S 模糊神经网络(TS-FNN);遗传算法
Risk Forecast of T-S Fuzzy Neural Network by Optimized GA for Overhead Line
Loads
1 1 1 2 1
NI Liang-hua , XIAO Li-jun , LV Gan-yun , TANG Zhi-qian , ZHU Tian-yu
(1.School Of Electric Power Engineering, Nanjing Institute of Technology , Nanjing 211167, China; 2.Zhenjiang Power Supply Com-
pany, Zhenjiang 212001, China)
Abstract: The impact of combined loads under extreme weather conditions adversely affects the operation reliability of
overhead line. To study the risk assessment of overhead line in prevention accident has practical significance. Overhead line
risk forecast is a time-varying and nonlinear problem with strong-coupling, which is difficult to establish accurate mathematical
model. According to the random properties of load-strength, the interference theory of load-strength and fuzzy predication
theory, a new risk forecast model based on the T-S fuzzy neural network by genetic algorithm(GA)is established for overhead
line loadsrisk predication, which takes the typical meteorological characteristics under extreme weather conditions as inputs,
such as wind speed, ice thickness, rain fall and air temperature, and regards time-scale failure probability of overhead line as an
output, moreover the parameters o
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