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    题名 作者 年代 出处 被引量
1Sizing optimization for island microgrid with pumped storage system considering demand response显示文摘Currently, small islands are facing an energy supply shortage, which has led to considerable concern.Establishing an island microgrid is a relatively good solution to the problem. However, high investment costs restrict its application. In this paper, micro pumped storage(MPS) is used as an energy storage system(ESS) for islands with good geographical conditions, and deferrable appliance is treated as the virtual power source which can be used in the planning and operational processes.Household acceptance of demand response(DR) is indicated by the demand response participation degree(DRPD), and a sizing optimization model for considering the demand response of household appliances in an island microgrid is proposed. The particle swarm optimization(PSO) is used to obtain the optimal sizing of all major devices. In addition, the battery storage(BS) scheme is used as the control group. The results of case studies demonstrate that the proposed method is effective, and the DR of deferrable appliances and the application of MPS can significantly reduce island microgrid investment.Sensitivity analysis on the total load of the island and the water head of the MPS are conducted.Zhaoxia JING Jisong ZHU Rongxing HU 2018Journal of Modern Power Systems and Clean Energy2018,6,4:6
2Reliability Analysis for Complex Systems Based on Dynamic Evidential Network Considering Epistemic Uncertainty显示文摘Fault tolerant technology has greatly improved the reliability of modern systems on one hand and makes their failure mechanisms more complex on the other.The characteristics of dynamics of failure,diversity of distribution and epistemic uncertainty always exist in these systems,which increase the challenges in the reliability assessment of these systems significantly.This paper presents a novel reliability analysis framework for complex systems within which the failure rates of components are expressed in interval numbers.Specifically,it uses a dynamic fault tree(DFT)to model the dynamic fault behaviors and copes with the epistemic uncertainty using Dempster-Shafer(D-S)theory and interval numbers.Furthermore,an approach is presented to convert a DFT into a dynamic evidential network(DEN)to calculate the reliability parameters.Additionally,a sorting method based on the possibility degree is proposed to rank the importance of components represented by interval numbers in order to obtain the most critical components,which can be used to provide the guidance for system design,maintenance planning and fault diagnosis.Finally,a numerical example is provided to illustrate the availability and efficiency of the proposed method.Rongxing Duan Yanni Lin Longfei Hu 2017Computer Modeling in Engineering & Sciences2017,,1:1
3An experimental and numerical study on the impact energy absorption characteristics of the multiaxial warp knitted (MWK) reinforced composites显示文摘ZHOU Rongxing HU Hong CHEN Nanling 0,,:1
4不同胆管空肠吻合技术治疗成人Ⅰ型胆总管囊肿的比较分析显示文摘目的:比较囊肿完全切除与不完全切除(残留近端1 cm胆总管囊壁)的Roux-en-Y胆管空肠吻合治疗成人Ⅰ型胆总管囊肿的安全性和可行性。方法:回顾性分析1998年1月至2015年12月间收治的267例成人Ⅰ型胆总管囊肿患者的病例资料,其中171例行囊肿完全切除的Rouxen-Y胆管空肠吻合术(PBD 0-cm组),96例行囊肿不完全切除的Rouxen-Y胆管空肠吻合术(PBD 1-cm组)。比较两组患者术后短期及长期并发症发生情况。结果:两组患者在手术时间和吻合口直径方面的差异均无统计学意义。PBD 1-cm组围手术期并发症发生率显著高于PBD 0-cm组(28.1%vs 14.0%,P=0.005),尤其是术后胆管炎(7.3%vs 1.2%,P=0.021)。两组患者术后吻合口狭窄、反流性胆管炎、肝内胆管结石和胆漏等长期并发症的差异均无统计学意义(均P>0.05)。PBD 1-cm组和PBD 0-cm组各有1例患者分别于术后5月和术后25月出现胰胆管恶变。而PBD 1-cm组有1例患者于术后10月出现吻合口恶变。结论:虽然保留部分囊壁可以降低Ⅰ型胆总管囊肿切除术中的吻合难度,但由于相对较高的术后并发症发生率和恶变概率,该吻合方式值得商榷。对于Ⅰ型胆总管囊肿患者,囊肿完全切除后以健康的近端胆管进行吻合是必要的。Wenjie Ma Yongqiong Tan Anuj Shrestha Fuyu Li Rongxing Zhou Junke Wang Haijie Hu Qin Yang 2018Gastroenterology Report2018,6,1:0
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