电力系统保护与控制Issue(1)：190-196,7.
敏感设备电压暂降严重程度可信性评价测度与方法
Credibility measure and assessment method of sensitive equipment voltage sag severity
摘要
Abstract
In order to accurately describe the equipments’ severity caused by voltage sag, the credibility measure which meets the conditions of non-additive is proposed based on their physical properties of responses. This assessment measure can avoid the deficiencies that classical probability measure needs a large number of samples and the non-duality of fuzzy measure. The membership function of sensitive equipment voltage tolerance capability corresponding to the characteristic quantities in the status uncertain area is determined by fuzzy statistical method and polynomial fitting method. Then the joint credibility distribution function is deduced based on uncertainty theory. Hence, the assessment model of severity of equipments failure is constructed. Based on practical samples, the PCs are simulated using the proposed method. Comparing the simulation results with those of methods using classical probability measure and possibility measure, it proves that the proposed method is proper and credible and can reflect practical condition more objectively. This work is supported by National Natural Science Foundation of China (No. 50877049).关键词
电压暂降/非对偶性/不可加性/可信性测度/联合可信性分布/不确定性理论Key words
voltage sag/non-duality/non-additive/credibility measure/joint credibility distribution function/uncertainty theory分类
信息技术与安全科学引用本文复制引用
刘旭娜,肖先勇,徐方维,魏晓天,杨景岗..敏感设备电压暂降严重程度可信性评价测度与方法[J].电力系统保护与控制,2013,(1):190-196,7.基金项目
国家自然科学基金项目(50877049) （50877049）
四川省科技支撑计划资助项目(2010GZ0256) （2010GZ0256）
