摘要
气象因素会导致输电线路故障,对电网可靠性有较大影响。对原有考虑气象因素的可靠性参数模型进行合理改进,提出不同地理位置输电线路的平均故障率不同,其对应的三态天气及三态天气下的故障次数百分比也存在差异。采用联系数方法处理可靠性原始数据和气象因素等的不确定性,应用状态枚举法对RBTS进行可靠性评估,得到联系数形式的可靠性指标。计算结果表明,元件所处地域不同导致的气象不均匀性对输电网可靠性评估影响不容忽视,联系数形式的可靠性指标亦呈现了不确定性部分的大小,证明所提出的方法更加符合实际。
Meteorological factors will cause the transmission line fault and affect the power system reliability prominently. The original reliability parameter model which considered the meteorological factors is improved, and it is pointed out that transmission lines in different geography have different average failure rate, and their corresponding three kinds of weather and the percentage of number of failures under the three kinds of weather also show great difference. Connection number is used to deal with the uncertainty of reliability original data and weather conditions. RBTS is evaluated with state enumeration method, and the reliability indices in form of connection number are obtained. The result shows that the uneven geography and meteorology will affect the reliability evaluation of the transmission system greatly, and the reliability indices in form of connection number also give the uncertain part, which proves the reliability of the proposed method.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2013年第11期32-37,共6页
Power System Protection and Control
关键词
气象因素
可靠性参数模型
不确定性
联系数
状态枚举法
meteorological factors
reliability parameter model
uncertainty
connection number
state enumeration method
