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2022 International Conference on Power Energy Systems and Applications (ICoPESA)最新文献

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Integrated Optimization of Real-time Rescheduling and Passenger Reassignment in the Strong Wind Case 强风情况下实时调度与乘客重新分配的集成优化
Pub Date : 2022-02-25 DOI: 10.1109/ICoPESA54515.2022.9754385
Chuming Liao, Junfeng Ma, Sha Ma
To reduce train delays and the number of stranded passengers at stations in the case of strong wind, this paper proposes an integrated optimization method for the train rescheduling and stranded passengers reassignment problem. Through introducing a set of critical train operation constraints, we develop a mixed integer programming model with the objective of minimizing total passenger delay. Then, the optimization software CPLEX is employed to solve the proposed mathematical model. The effectiveness and the efficiency of the proposed method are demonstrated by a numerical example.
为减少强风条件下的列车延误和车站滞留旅客数量,本文提出了一种列车重新调度和滞留旅客重新分配问题的综合优化方法。通过引入一组列车运行的关键约束,建立了以旅客总延误最小为目标的混合整数规划模型。然后,利用优化软件CPLEX对所提出的数学模型进行求解。算例验证了该方法的有效性和有效性。
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引用次数: 0
Research on Optimization Method of Passive Resonance Damping of Hybrid Active Power Filter 混合有源电力滤波器无源共振阻尼优化方法研究
Pub Date : 2022-02-25 DOI: 10.1109/ICoPESA54515.2022.9754446
Jing Lu, Pengfei Wang, Yanan Wu, Jun Li, Junming Zhang, Yunxiang Tian, Jun Tao, H. Mao
The hybrid active power filter (HAPF) is an effective measure to suppress the harmonic resonance of power system with high-voltage and large-capacity harmonic compensation. Compared with the single use of active power filter (APF), the passive resonance of HAPF further reduces the capacity of APF and improves the large-capacity application. Thus, it is an important scientific issue to study the passive resonance damping relationship of HAPF. This paper analyzes the passive damping resonance method of HAPF in Tokamak power supply. Based on the harmony search model, a parameter optimization method is proposed, and the improved harmony algorithm is introduced to solve the passive damping optimization parameters. The passive damping optimization method is validated by MATLAB/Simulink simulation and experiments.
混合有源电力滤波器(HAPF)是抑制高压大容量电力系统谐波谐振的有效措施。与单一使用有源电力滤波器(APF)相比,HAPF的无源谐振进一步降低了APF的容量,提高了大容量应用。因此,研究HAPF的被动共振阻尼关系是一个重要的科学问题。分析了HAPF在托卡马克电源中的被动阻尼谐振方法。在和声搜索模型的基础上,提出了一种参数优化方法,并引入改进的和声算法求解被动阻尼优化参数。通过MATLAB/Simulink仿真和实验验证了被动阻尼优化方法的有效性。
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引用次数: 0
Fuzzy Logic for Energy Management in Hybrid Energy Storage Systems Integrated DC Microgrid 混合储能系统集成直流微电网能量管理的模糊逻辑
Pub Date : 2022-02-25 DOI: 10.1109/ICoPESA54515.2022.9754406
Muaiz Ali, M. Hossain, M. Shafiullah
The direct current (DC) systems have outstanding advantages compared to the alternating current (AC), especially when it comes to renewable energy resources (RER) and microgrids (MGs). Therefore, the DC microgrid (DCMG) has become popular and drawn the attention of researchers. Due to the integration of different power sources in the single DC bus, including solar photovoltaics (PV), wind farms, diesel generators, and energy storage systems, maintaining stable bus voltage requires a complicated control system to ensure a fast-decision-making procedure. This paper presents an energy management strategy for the DCMG using a fuzzy logic-based controller. The proposed DCMG uses a hybrid energy storage system (HESS) for energy balancing and a diesel generator as a backup. The proposed strategy uses generation and loads demand and battery state of charge (SoC) to control the power flow within the MG. The energy management system keeps the SoC in a suitable range to increase the battery life. By controlling the charging and discharging of the HESS, the proposed method has a fast response to the load variation and RER intermittency to prevent the fluctuation of the voltage level of the DC bus and keep it constant. The obtained results validate the efficacy of the proposed fuzzy logic controller.
与交流(AC)相比,直流(DC)系统具有突出的优势,特别是在可再生能源(RER)和微电网(mg)方面。因此,直流微电网(DCMG)受到了广泛的关注。由于在单一直流母线上集成了不同的电源,包括太阳能光伏发电(PV)、风力发电场、柴油发电机和储能系统,因此维持稳定的母线电压需要一个复杂的控制系统,以确保快速决策过程。本文提出了一种基于模糊逻辑控制器的DCMG能量管理策略。提出的DCMG使用混合储能系统(HESS)进行能量平衡,并使用柴油发电机作为备用。该策略利用发电和负载需求以及电池充电状态(SoC)来控制MG内的功率流。能量管理系统将SoC保持在合适的范围内,以增加电池寿命。该方法通过控制HESS的充放电,对负载变化和RER的间歇性有快速响应,防止直流母线电压水平的波动,使其保持恒定。仿真结果验证了所提模糊控制器的有效性。
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引用次数: 11
A Novel Adaptive Voltage Integral Control for Improving Power Sharing and Circulating-Current Resonance in Islanded Micro-grid 一种改善孤岛微电网电力共享和循环电流共振的新型自适应电压积分控制
Pub Date : 2022-02-25 DOI: 10.1109/ICoPESA54515.2022.9754449
Yufei Li, Fei Wang, Xiayun Feng
Different with conventional uninterrupted power supply (UPS) system, improving power sharing and reducing circulating-current resonance are important to islanded micro-grid because of the unstructured impedance networks decided by the uneven distribution of power converters and electrical loads. Virtual impedance control, as an improved droop control, is widely used to solve these problems. However, voltage drop of the load will be aggravated with increase of the virtual impedance. This paper aims to reveal disadvantages of the virtual impedance control and a novel adaptive voltage integral control is proposed to solve the voltage drop problem and enhance power sharing autonomously through key parameters. The proposed adaptive control is compared with the virtual impedance control in aspect of circulating-current resonance by impedance analysis. The correctness and effectiveness of the proposed method are verified by simulations and experiments.
与传统的不间断电源(UPS)系统不同,孤岛微电网由于电源变流器和电力负荷的不均匀分布所决定的非结构化阻抗网络,提高功率共享和减少循环电流谐振具有重要意义。虚拟阻抗控制作为一种改进的下垂控制,被广泛用于解决这些问题。但是,随着虚阻抗的增大,负载的压降会加剧。针对虚拟阻抗控制的不足,提出了一种新的自适应电压积分控制方法,通过关键参数解决电压降问题,增强功率共享的自主性。通过阻抗分析,将所提出的自适应控制与虚拟阻抗控制在循环电流谐振方面进行了比较。仿真和实验验证了该方法的正确性和有效性。
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引用次数: 0
Life Cycle Assessment for Balance-of-System of Photovoltaic Energy Systems 光伏能源系统平衡的生命周期评估
Pub Date : 2022-02-25 DOI: 10.1109/ICoPESA54515.2022.9754477
Ziyi Wang, Zengqiao Chen, R. Wennersten, Qie Sun
As production technologies of photovoltaic (PV) panels continue to improve, the balance-of-system (BOS) of a PV energy system account for an increasingly large share in the system’s overall environmental impacts, while little attention has been paid to BOSs from a life cycle assessment (LCA) perspective. Based on a thorough literature review, a rigorous definition and a clear system boundary of BOS were proposed in this study. A comprehensive LCA of PV BOSs was thus implemented in terms of different installation typologies. Results show that, for a 1 kW PV system, the BOS’s global warming potential (GWP) is 1.54E+05 kgCO2eq, its greenhouse gas (GHG) emissions are 1.67E+05 kgCO2eq, and its cumulative energy demand (CED) is 2.04E+06 MJ. In the BOS, car-based mobile washing contributes to the major impacts, while system mounting and module interconnection have major environmental impacts. In the installation typologies, in-roof slanted turns have relative advantages over the others in terms of environmental impacts.
随着光伏板生产技术的不断提高,光伏能源系统的系统平衡(BOS)在系统整体环境影响中所占的比重越来越大,而从生命周期评价(LCA)角度对系统平衡(BOS)的关注却很少。在对相关文献进行梳理的基础上,本文提出了BOS的严格定义和清晰的系统边界。因此,根据不同的安装类型实现了PV BOSs的综合LCA。结果表明,1 kW光伏发电系统的全球变暖潜能值(GWP)为1.54E+05 kgCO2eq,温室气体排放量(GHG)为1.67E+05 kgCO2eq,累计能源需求(CED)为2.04E+06 MJ。在BOS中,基于汽车的移动洗涤对环境的影响最大,而系统安装和模块互连对环境的影响最大。在安装类型中,屋顶内倾斜转弯在环境影响方面具有相对优势。
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引用次数: 1
Distributed Energy Resource-Assisted Industrial Demand Response: A Survey on Technologies, Business Models, and Applications in China 分布式能源辅助工业需求响应:中国技术、商业模式与应用调查
Pub Date : 2022-02-25 DOI: 10.1109/ICoPESA54515.2022.9754430
Xinyun Dai, Haoyong Chen, Dongliang Xiao, Qianya He, Yuxiang Huang
In the context of building new power system for China, it is crucial to explore the demand response potential of industrial customers in depth. In this paper, we will analyze the demand response characteristics of industrial loads and summarize the industrial process modeling approaches, as well as the demand response potential assessment. The key role of distributed energy resource in industrial demand response is introduced. Next, it discusses the key technologies required for establishing a flexible and efficient market model and supporting the accesses of numerous distributed industrial users. Additionally, the practices and progresses of industrial demand response in China are summarized. Finally, several suggestions are provided for the construction of industrial demand response mechanisms in China under the current situation.
在建设中国新电力系统的背景下,深入挖掘工业客户的需求响应潜力至关重要。本文将分析工业负荷的需求响应特征,总结工业过程建模方法,以及需求响应潜力评估。介绍了分布式能源在工业需求响应中的关键作用。其次,讨论了建立灵活高效的市场模式,支持众多分布式工业用户接入所需的关键技术。此外,还总结了中国工业需求响应的实践和进展。最后,对当前形势下中国产业需求响应机制的构建提出了几点建议。
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引用次数: 1
Min-Max Optimal Control for High-Speed Train Movements with Exogenous Disturbances and Uncertain Parameters 具有外源扰动和参数不确定的高速列车运动的最小-最大最优控制
Pub Date : 2022-02-25 DOI: 10.1109/ICoPESA54515.2022.9754439
Junfeng Ma, Sha Ma, Tao Peng, W. Gui
This study investigates the min-max optimal control of high-speed train movements considering worst-case exogenous disturbances and uncertain parameters simultaneously. For a high-speed train, each car is modeled as a point mass connected by flexible coupling to track the reference speed profile of the train. Based on the robust model predictive control (RMPC) approach, a min-max optimal control problem is formulated to reduce the energy consumption and tracking errors while satisfying some individual constraints. The desired control inputs can be obtained by solving the min-max optimization problem.
研究了同时考虑最坏情况外源干扰和不确定参数的高速列车运动的最小-最大最优控制问题。对于高速列车,每个车厢都被建模为一个通过柔性联轴器连接的质点,以跟踪列车的参考速度轮廓。在鲁棒模型预测控制(RMPC)方法的基础上,提出了一个最小-最大最优控制问题,以减少能量消耗和跟踪误差,同时满足一些个体约束。通过求解最小-最大优化问题,可以得到所需的控制输入。
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引用次数: 0
Transient Stability Assessment for AC-DC Hybrid Systems Based on Bayesian Optimization XGBoost 基于贝叶斯优化的交直流混合系统暂态稳定性评估
Pub Date : 2022-02-25 DOI: 10.1109/ICoPESA54515.2022.9754468
Xin Qiao, Zengping Wang, Zhenzhao Li
Machine learning is playing an increasingly important role in transient stability assessment. One of the key challenges of machine learning-based transient stability assessment in the case of dealing with large-scale and high-dimensional data samples of AC-DC power systems is to eliminate redundant variables to improve the training speed and quickly determine the optimal parameters of the adopted algorithms. Aiming at this problem, this paper proposes a Bayesian optimization-based XGBoost (B-XGBoost) method for transient stability assessment of power systems. The method uses serial integration of multiple regression trees to calculate the importance ranking of transient stability features. Combined with correlation analysis, the relationship between input data and transient stability can be explored more intuitively, and redundant variables can be eliminated; Bayesian optimization is used in training to quickly determine the best parameters of the model. Simulations are performed in a 39-node AC-DC system, and the results show that the B-XGBoost transient stability evaluation method has higher accuracy and a significant advantage in speed compared with other machine learning-based methods such as GBDT, DBN, RF, SVM.
机器学习在暂态稳定评估中发挥着越来越重要的作用。在处理交直流电力系统大规模高维数据样本的情况下,基于机器学习的暂态稳定评估的关键挑战之一是消除冗余变量以提高训练速度并快速确定所采用算法的最优参数。针对这一问题,本文提出了一种基于贝叶斯优化的电力系统暂态稳定评估XGBoost (B-XGBoost)方法。该方法采用多回归树序列积分法计算暂态稳定特征的重要性排序。结合相关分析,可以更直观地探索输入数据与暂态稳定之间的关系,剔除冗余变量;在训练中使用贝叶斯优化来快速确定模型的最佳参数。在39节点交直流系统中进行了仿真,结果表明,与基于机器学习的GBDT、DBN、RF、SVM等方法相比,B-XGBoost暂态稳定性评估方法具有更高的准确性和显著的速度优势。
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引用次数: 1
Energy Efficiency Optimization for Cooperative SWIPT Network Based on Continuously Adjustable Power Splitter 基于连续可调功率分配器的协同SWIPT网络能效优化
Pub Date : 2022-02-25 DOI: 10.1109/ICoPESA54515.2022.9754469
Xiaoming Liu, Chuanlian Luo, Shu Han, Yuanhong Zhong, Zhiyong Huang, Yan Yang
With the continuous improvement of wireless communication technology, expanding wireless communication infrastructures consume more energy than ever before. This situation raises the need to improve energy efficiency. This paper considers system energy efficiency optimization with SWIPT technology in cooperative wireless network. And as the value of power split ratio affects the energy efficiency of the transmission network, a continuously adjustable power splitter in the SWIPT receiver is designed. Based on the continuous power distribution coefficient ρ, we give a cooperative SWIPT transmission network model and a transmission energy efficiency optimization problem. Compared with the traditional SWIPT transmission scheme based on discrete power splitter, our method is more practical for engineering. Our simulation results demonstrate that our method can improve the energy efficiency of the transmission network.
随着无线通信技术的不断进步,不断扩大的无线通信基础设施消耗的能源比以往任何时候都多。这种情况提出了提高能源效率的必要性。研究了协同无线网络中SWIPT技术的系统能效优化问题。针对功率分配器的大小对传输网络能量效率的影响,在SWIPT接收机中设计了连续可调功率分配器。基于连续功率分配系数ρ,给出了一种协作式SWIPT输电网模型和传输能效优化问题。与传统的基于离散功率分配器的SWIPT传输方案相比,该方案在工程上更加实用。仿真结果表明,该方法可以提高输电网的能量利用率。
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引用次数: 0
Lightning Protection Safety Risk Assessment Method for Key Units of Meteorological Disaster Prevention 气象防灾重点单位防雷安全风险评估方法
Pub Date : 2022-02-25 DOI: 10.1109/ICoPESA54515.2022.9754447
Jin Lin, Zhang Xinxin, C. Lijun, Hu Xiaowan
Based on the key units of meteorological disaster prevention in Shanghai as a specific object, the research on lightning protection safety risk assessment method is carried out. By analyzing the attribute characteristics of key units of meteorological disaster prevention, combined with three important factors such as lightning risk factor, disaster bearing body exposure and disaster prevention ability, the lightning protection safety risk assessment index system and calculation model are established, The key meteorological disaster prevention units are quantitatively evaluated and the risk grade classification standard is formulated, so as to dynamically determine the lightning disaster risk grade of key units.
以上海市气象防灾重点单位为具体对象,开展了防雷安全风险评估方法研究。通过分析气象防灾重点单位的属性特征,结合雷电风险因素、承灾体暴露和防灾能力三个重要因素,建立了防雷安全风险评价指标体系和计算模型,对气象防灾重点单位进行了定量评价,制定了风险等级分类标准;从而动态确定重点单位雷电灾害风险等级。
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引用次数: 0
期刊
2022 International Conference on Power Energy Systems and Applications (ICoPESA)
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