摘要
通过分析电压骤降及敏感设备电压骤降耐受能力的特点,扩展用户的电压骤降耐受曲线的状态区域。以骤降幅值和持续时间为电压骤降的主要特征量,提出基于二维隶属分布函数的电压骤降经济损失估算方法。首先以用户历史生产中断损失为基础,将骤降幅值和持续时间设为自变量,通过确定合理的生产中断模糊隶属函数形式与参数,获取电压骤降对中断故障的隶属度;然后以隶属度为转换因子,将电压骤降的经济损失转换为不完全的生产中断损失。实例分析证明了所提方法可行,且适用于大部分敏感设备。
The user＇s state area of voltage sag tolerance curve is expanded by analyzing the characteristics of voltage sag and the voltage sag tolerance ability of sensitive equipment.An estimation method based on the two-dimensional membership distribution function is proposed for the economic loss of voltage sag,which takes the sag magnitude and duration as its main characteristic variants.With the sag magnitude and duration as the independent variables,the membership degree of voltage sag towards the interrupt fault is obtained by setting the reasonable form and parameters of production interruption fuzzy membership function based on user＇s historical production interrupt costs,and with the membership degree as the conversion factor,the economic loss of voltage sag is then converted into the incomplete production interrupt cost.Example analysis proves the proposed method is feasible and applicable for most sensitive equipments.
出处
《电力自动化设备》
EI
CSCD
北大核心
2012年第11期51-55,共5页
Electric Power Automation Equipment
关键词
电压骤降
经济损失
电压耐受曲线
隶属函数
估算
voltage sag
economic loss
voltage-tolerance curve
membership functions
estimation
