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计及异常状态和定期检修的UPFC可靠性评估
李生虎1,2, 胡涛1,2, 常雅玲1,2
1.合肥工业大学 电气与自动化工程学院,安徽 合肥 230009;2.新能源利用与节能安徽省重点实验室,安徽 合肥 230009
摘要:
统一潮流控制器(UPFC)可用与否受其元件可靠性及检修策略的影响。根据元件突发性故障比例,提出一种计及异常状态的元件转移率计算方法,并建立计及异常状态和定期检修的UPFC状态空间模型。建立UPFC可靠性对元件故障率的灵敏度模型以确定薄弱元件,进而量化定期检修参数对UPFC可靠性的影响。根据灵敏度模型分析结果确定了UPFC薄弱元件,量化了计及异常状态和定期检修后UPFC可靠性,分析了突发性故障比例和从异常状态到故障状态比例对UPFC可靠性的影响。通过与摄动法进行比较,验证了计及定期检修UPFC可靠性灵敏度分析方法的正确性。
关键词:  统一潮流控制器  可靠性  异常状态  定期检修  灵敏度分析
DOI:10.16081/j.epae.202201026
分类号:TM72
基金项目:国家自然科学基金资助项目(51877061);国家电网公司总部科技项目(52170221000U)
Reliability evaluation to UPFC with abnormal state and routine test
LI Shenghu1,2, HU Tao1,2, CHANG Yaling1,2
1.School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China;2.Anhui Province Key Laboratory of Renewable Power Utilization and Energy Saving, Hefei 230009, China
Abstract:
The availability of UPFC(Unified Power Flow Controller) depends on the reliability of its components and their routine test strategies. According to the sudden failure ratio of the component, a calculative method of the transition rate of the component with abnormal state is proposed, and the state-space model of UPFC with abnormal state and routine test is built. A sensitivity model of UPFC reliability to failure ratio of the component is built to confirm the vulnerable component, moreover the influence of the routine test parameters on the UPFC’s reliability is quantified. According to the analytical results of sensitivity model, the vulnerable component of UPFC is confirmed, the reliability of UPFC with abnormal state and the routine test is quantified, and the influences of the ratio of sudden failure and the ratio from the abnormal state to failure state on the UPFC’s reliability are analyzed. The accuracy of the sensitivity analysis method of UPFC reliability with routine test is verified by comparing with the perturbation method.
Key words:  UPFC  reliability  abnormal state  routine test  sensitivity analysis

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