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An operating state estimation model for integrated energy systems based on distributed solution
Dengji ZHOU, Shixi MA, Dawen HUANG, Huisheng ZHANG, Shilie WENG
《能源前沿(英文)》 2020年 第14卷 第4期 页码 801-816 doi: 10.1007/s11708-020-0687-y
关键词: integrated energy system state estimation electricity-gas coupling energy system nonlinear coupling distributed solution
张铁岩,王承民,孙秋野,张化光
《中国工程科学》 2008年 第10卷 第10期 页码 42-46
对电缆的剩余寿命进行评估是电缆寿命管理的关键环节,以往电缆寿命评估的方法中有Arrhenius方法和Weibull分布模型。对这两种方法分别进行分析,特别是确定Arrhenius模型中激活能的计算,以及应用Weibull分布模型对电缆寿命进行评估。最后以实际电缆的状态监测数据,对简化的Arrhenius模型进行仿真,说明所提出的方法是有效的。
关键词: 电缆 寿命评估 Arrhenius模型 Weibull分布
L. RAMESH, N. CHAKRABORTY, S. P. CHOWDHURY
《能源前沿(英文)》 2012年 第6卷 第1期 页码 47-56 doi: 10.1007/s11708-011-0159-5
关键词: artificial intelligence power distribution control state estimation
Ahmad MOZAFFARI,Mahyar VAJEDI,Nasser L. AZAD
《机械工程前沿(英文)》 2015年 第10卷 第2期 页码 154-167 doi: 10.1007/s11465-015-0336-z
The main proposition of the current investigation is to develop a computational intelligence-based framework which can be used for the real-time estimation of optimum battery state-of-charge (SOC) trajectory in plug-in hybrid electric vehicles (PHEVs). The estimated SOC trajectory can be then employed for an intelligent power management to significantly improve the fuel economy of the vehicle. The devised intelligent SOC trajectory builder takes advantage of the upcoming route information preview to achieve the lowest possible total cost of electricity and fossil fuel. To reduce the complexity of real-time optimization, the authors propose an immune system-based clustering approach which allows categorizing the route information into a predefined number of segments. The intelligent real-time optimizer is also inspired on the basis of interactions in biological immune systems, and is called artificial immune algorithm (AIA). The objective function of the optimizer is derived from a computationally efficient artificial neural network (ANN) which is trained by a database obtained from a high-fidelity model of the vehicle built in the Autonomie software. The simulation results demonstrate that the integration of immune inspired clustering tool, AIA and ANN, will result in a powerful framework which can generate a near global optimum SOC trajectory for the baseline vehicle, that is, the Toyota Prius PHEV. The outcomes of the current investigation prove that by taking advantage of intelligent approaches, it is possible to design a computationally efficient and powerful SOC trajectory builder for the intelligent power management of PHEVs.
关键词: trip information preview intelligent transportation state-of-charge trajectory builder immune systems artificial neural network
智能电网状态估计方法最新进展综述 Review Article
Gang WANG, Georgios B. GIANNAKIS, Jie CHEN, Jian SUN
《信息与电子工程前沿(英文)》 2019年 第20卷 第1期 页码 4-17 doi: 10.1631/FITEE.1800590
基于多模型融合驱动的锂离子动力电池荷电状态和容量联合估计研究 Article
熊瑞, 王榘, Weixiang Shen, 田金鹏, 穆浩
《工程(英文)》 2021年 第7卷 第10期 页码 1471-1484 doi: 10.1016/j.eng.2020.10.022
锂离子动力电池(LIB)已成为各种电动载运工具的首选电源系统,包括电动汽车、电动轮船、电动火车和电动飞机。在全气候全寿命周期运行的电动载运工具中,锂离子电池的能量管理需要实时准确估计电池的荷电状态(SOC)和容量。本文提出了一种多阶段模型融合算法可协同估计SOC和容量。首先,基于正态分布假设,利用模型在不同老化状态下的残差均值和方差计算权重,建立参数稳定的融合模型。其次,将具有预测性的微分增益引入比例-积分观测器(PIO)以提高收敛速度。再次,将多阶段融合模型与比例-积分-微分观测器(PIDO)结合,建立了一种融合算法,可实现复杂应用环境下SOC和容量的协同估计。然后,讨论了融合算法的收敛性和抗噪性能。最后,搭建硬件在环平台,验证了融合算法的性能。不同老化状态和温度下的验证结果表明,融合算法可以实现SOC和容量的高精度协同估计,误差分别在2%和3.3%以内。
关键词: 荷电状态 容量估计 模型融合 比例-积分-微分观测器 硬件在环
A survey of photon mapping state-of-the-art research and future challenges
Chun-meng KANG,Lu WAN,Yan-ning XU,Xiang-xu MENG
《信息与电子工程前沿(英文)》 2016年 第17卷 第3期 页码 185-199 doi: 10.1631/FITEE.1500251
关键词: Global illumination Photon mapping Radiance estimation Photon relaxation Progressive photon mapping
Salman HABIB, Muhammad Mansoor KHAN, Farukh ABBAS, Muhammad NUMAN, Yaqoob ALI, Houjun TANG, Xuhui YAN
《能源前沿(英文)》 2020年 第14卷 第2期 页码 298-317 doi: 10.1007/s11708-019-0648-5
关键词: electric vehicles (EVs) residential distribution networks (RDNs) voltage unbalance factor (VUF) state-of charge (SOC) time-of-use (TOU)
A brief review on key technologies in the battery management system of electric vehicles
Kailong LIU, Kang LI, Qiao PENG, Cheng ZHANG
《机械工程前沿(英文)》 2019年 第14卷 第1期 页码 47-64 doi: 10.1007/s11465-018-0516-8
关键词: battery management system battery modelling battery state estimation battery charging
一种针对测试误差、参数误差和负荷突变故障分析的多功能动态状态估计器 Article
Mehdi AHMADI JIRDEHI,Reza HEMMATI,Vahid ABBASI,Hedayat SABOORI
《信息与电子工程前沿(英文)》 2016年 第17卷 第11期 页码 1218-1227 doi: 10.1631/FITEE.1500301
Bayes estimation of residual life by fusing multisource information
Qian ZHAO, Xiang JIA, Zhi-jun CHENG, Bo GUO
《工程管理前沿(英文)》 2018年 第5卷 第4期 页码 524-532 doi: 10.15302/J-FEM-2018034
Residual life estimation is essential for reliability engineering. Traditional methods may experience difficulties in estimating the residual life of products with high reliability, long life, and small sample. The Bayes model provides a feasible solution and can be a useful tool for fusing multisource information. In this study, a Bayes model is proposed to estimate the residual life of products by fusing expert knowledge, degradation data, and lifetime data. The linear Wiener process is used to model degradation data, whereas lifetime data are described via the inverse Gaussian distribution. Therefore, the joint maximum likelihood (ML) function can be obtained by combining lifetime and degradation data. Expert knowledge is used according to the maximum entropy method to determine the prior distributions of parameters, thereby making this work different from existing studies that use non-informative prior. The discussion and analysis of different types of expert knowledge also distinguish our research from others. Expert knowledge can be classified into three categories according to practical engineering. Methods for determining prior distribution by using the aforementioned three types of data are presented. The Markov chain Monte Carlo is applied to obtain samples of the parameters and to estimate the residual life of products due to the complexity of the joint ML function and the posterior distribution of parameters. Finally, a numerical example is presented. The effectiveness and practicability of the proposed method are validated by comparing it with residual life estimation that uses non-informative prior. Then, its accuracy and correctness are proven via simulation experiments.
关键词: residual life estimation Bayes model linear Wiener process
Jiangbo WANG, Zhong XIN
《化学科学与工程前沿(英文)》 2009年 第3卷 第2期 页码 167-171 doi: 10.1007/s11705-009-0006-y
关键词: polycarbonate polymethylphenylsilsesquioxane thermal degradation kinetics activation energy lifetime
Hierarchical parameter estimation of DFIG and drive train system in a wind turbine generator
Xueping PAN, Ping JU, Feng WU, Yuqing JIN
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 367-376 doi: 10.1007/s11465-017-0429-y
A new hierarchical parameter estimation method for doubly fed induction generator (DFIG) and drive train system in a wind turbine generator (WTG) is proposed in this paper. Firstly, the parameters of the DFIG and the drive train are estimated locally under different types of disturbances. Secondly, a coordination estimation method is further applied to identify the parameters of the DFIG and the drive train simultaneously with the purpose of attaining the global optimal estimation results. The main benefit of the proposed scheme is the improved estimation accuracy. Estimation results confirm the applicability of the proposed estimation technique.
关键词: wind turbine generator DFIG drive train system hierarchical parameter estimation method trajectory sensitivity technique
Penetrance estimation of variants in paroxysmal kinesigenic dyskinesia and infantile convulsions
《医学前沿(英文)》 2021年 第15卷 第6期 页码 877-886 doi: 10.1007/s11684-021-0863-4
关键词: penetrance PRRT2 paroxysmal kinesigenic dyskinesia infantile convulsions
标题 作者 时间 类型 操作
An operating state estimation model for integrated energy systems based on distributed solution
Dengji ZHOU, Shixi MA, Dawen HUANG, Huisheng ZHANG, Shilie WENG
期刊论文
Intelligent algorithm for optimal meter placement and bus voltage estimation in ring main distribution
L. RAMESH, N. CHAKRABORTY, S. P. CHOWDHURY
期刊论文
Real-time immune-inspired optimum state-of-charge trajectory estimation using upcoming route information
Ahmad MOZAFFARI,Mahyar VAJEDI,Nasser L. AZAD
期刊论文
A survey of photon mapping state-of-the-art research and future challenges
Chun-meng KANG,Lu WAN,Yan-ning XU,Xiang-xu MENG
期刊论文
A framework for stochastic estimation of electric vehicle charging behavior for risk assessment of distribution
Salman HABIB, Muhammad Mansoor KHAN, Farukh ABBAS, Muhammad NUMAN, Yaqoob ALI, Houjun TANG, Xuhui YAN
期刊论文
A brief review on key technologies in the battery management system of electric vehicles
Kailong LIU, Kang LI, Qiao PENG, Cheng ZHANG
期刊论文
一种针对测试误差、参数误差和负荷突变故障分析的多功能动态状态估计器
Mehdi AHMADI JIRDEHI,Reza HEMMATI,Vahid ABBASI,Hedayat SABOORI
期刊论文
Bayes estimation of residual life by fusing multisource information
Qian ZHAO, Xiang JIA, Zhi-jun CHENG, Bo GUO
期刊论文
Thermal degradation kinetics and lifetime estimation for polycarbonate/polymethylphenylsilsesquioxane
Jiangbo WANG, Zhong XIN
期刊论文
Hierarchical parameter estimation of DFIG and drive train system in a wind turbine generator
Xueping PAN, Ping JU, Feng WU, Yuqing JIN
期刊论文