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2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)最新文献

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On the Impact of Topology on Power System Transient and Frequency Stability 论拓扑结构对电力系统暂态和频率稳定的影响
F. Ebrahimzadeh, Muhammad Adeen, F. Milano
This paper presents a statistical study on the impact of topology of the transmission system on the transient and frequency stability of power systems. We consider four topologies: random graph; small-world graph; nested small-world graph; and lattice graph. These graphs are utilized to generate hundreds of synthetic networks with given topology and adequately generated static and dynamic data. Then, each network is simulated based on a Monte Carlo method and considering random contingencies and different levels of inertia. The case study allows drawing some remarkable conclusions on the correlation between power system stability and topology.
本文对输电系统拓扑结构对电力系统暂态稳定性和频率稳定性的影响进行了统计研究。我们考虑了四种拓扑结构:随机图;小世界图;嵌套小世界图;晶格图。这些图用于生成数百个具有给定拓扑和充分生成的静态和动态数据的合成网络。然后,基于蒙特卡罗方法对每个网络进行模拟,并考虑随机偶然性和不同程度的惯性。通过实例研究,可以得出一些关于电力系统稳定性与拓扑结构之间关系的重要结论。
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引用次数: 8
Aging study of remote luminophore at ambient temperature 远端发光团在室温下的老化研究
E. Purwanto, P. Dupuis, L. Canale, N. Sinisuka, G. Zissis
Phosphor Convert White Light Emitting Diodes (pc-WLEDs) lamps market share is continuously growing since a few years, replacing traditional products due to their higher efficiency and expected lifetime. In Indonesia, the use of LED lamps increased sharply since the last four years, replacing CFL lamps. The most commonly found pc-WLEDs in the market are Blue-emitting LED coated with yellow phosphor based on silicon matrix. Many literature studies performed accelerated artificial aging of phosphor/silicon composite using oven and thermal plate. The consensus is to use a temperature of 85 °C. This study investigates medium term degradation failure mechanisms of phosphor/silicon material and found that such effect can be observed at ambient temperature. Different degradation modes were also identified.
近年来,荧光粉转换白光发光二极管(pc- wled)灯的市场份额不断增长,由于其更高的效率和预期寿命,取代了传统产品。在印度尼西亚,LED灯的使用在过去四年中急剧增加,取代了CFL灯。市场上最常见的pc- wled是涂有基于硅基质的黄色荧光粉的蓝色发光LED。许多文献研究利用烘箱和热板对磷硅复合材料进行了加速人工老化。一般使用85°C的温度。本研究探讨了磷光体/硅材料的中期降解失效机制,发现在环境温度下可以观察到这种效应。还鉴定了不同的降解模式。
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引用次数: 2
The Impact of Number of Partitions on Transient Stability of Intentional Controlled Islanding 分区数对有意控制孤岛暂态稳定性的影响
M. Babaei, S. Muyeen, Syed Islam
Intentional Controlled Islanding (ICI) is the last protective measure that must be adopted in power systems to prevent forming unstable islands with load-generation imbalance power. If conventional protective schemes fail to save the power system against wide-area blackout, some cutsets are selected to keep the system operating while feeding essential loads. This paper investigates the effect of the number of partitions on the dynamic performance of controlled islanding and proposes a unified algorithm to identify the coherent generators, optimal cutsets, and timing of islanding in online applications. The algorithm provides an islanding solution with minimum power flow disruption while each island contains coherent groups of generators. The concept of Centre of Inertia (COI) referred angles of generators has been used to determine the critical timing of islanding. Different scenarios in NE 39-bus and IEEE 118-bus test systems were simulated in PowerFactory that led to instability in the power system, and then controlled islanding schemes with a different number of partitions were applied to create stable islands. To better demonstrate the shortcomings of the existing clustering techniques, the effect of the number of required islands on transient stability of controlled islanding and the necessity of devising an automatic method to recognise the number of islands is discussed.
有意控制孤岛(ICI)是电力系统为防止形成负荷发电不平衡的不稳定孤岛而必须采取的最后一项保护措施。如果传统的保护方案不能使电力系统免受大面积停电的影响,则选择一些切断装置在给必要负荷供电的同时保持系统运行。本文研究了分区数量对控制孤岛动态性能的影响,提出了一种统一的算法来识别在线应用中的相干发生器、最优割集和孤岛时间。该算法提供了一个孤岛方案,当每个孤岛包含连贯的发电机群时,潮流中断最小。利用发电机转动惯量中心(COI)参考角的概念来确定孤岛的临界时刻。在PowerFactory中模拟了ne39总线和ieee118总线测试系统中导致电力系统不稳定的不同场景,并采用不同分区数的可控孤岛方案创建稳定的孤岛。为了更好地说明现有聚类技术的缺点,讨论了所需岛屿数量对受控岛屿暂态稳定性的影响以及设计一种自动识别岛屿数量的方法的必要性。
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引用次数: 1
Designing of static VAR compensators with voltage regulators 带电压调节器的静态无功补偿器的设计
D. I. Panfilov, I. I. Zhuravlev, M. Astashev
The approach to the designing of controlled reactive power compensators with AC sinusoidal voltage regulators is presented. Different topologies of VAR compensators with voltage regulators are analyzed. An example of sinusoidal voltage regulator realization based on a transformer with a controlled transformer ratio is considered. The realizing of transformer with controlled transformer ratio is proposed based on a multiple-winding transformer with sectioned winding and a controlled commutator. Examples of VAR compensator circuits based on transformer with sectioned winding and thyristor’s commutator are analyzed. Mathematical models of VAR compensators in Matlab Simulink program are developed and modeling results are presented.
介绍了带交流正弦电压调节器的可控无功补偿器的设计方法。分析了带电压调节器的无功补偿器的不同拓扑结构。给出了一个基于可控制变比变压器的正弦稳压器的实现实例。提出了一种基于分段绕组的多绕组变压器和可控换向器的控制变比变压器的实现方法。分析了基于分段绕组变压器和可控硅换向器的无功补偿电路实例。在Matlab Simulink程序中建立了无功补偿器的数学模型,并给出了建模结果。
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引用次数: 2
A Procedure for the Producibility Curve Identification of a Dish-Stirling Plant, Starting from Experimental Data 从实验数据出发的碟式斯特林装置生产曲线鉴定程序
G. Cipriani, G. Ciulla, V. Di Dio, Jardel Dos Santos Nunes, C. Chiaruzzi, M. Bongiorno, G. Larson
This article presents a procedure for the producibility curve identification of a dish-Stirling plant, starting from experimental data. The producibility data was measured, recorded, analysed, filtered and monthly aggregated. Moreover, the incidence of the ambient temperature and of the mirrors cleaning on producibility data is highlighted and a procedure to normalize the measured data in temperature and cleaning level was developed. To provide a validation of the developed procedure the producibility curves at 25 °C have been obtained and compared with the one issued by the manufacturer. The two curves are in good agreement, presenting a maximum deviation of the 7 %.
本文从实验数据出发,介绍了碟式斯特林装置生产效率曲线的识别方法。产能数据被测量、记录、分析、过滤并每月汇总。此外,强调了环境温度和镜面清洗对生产效率数据的影响,并开发了一种对温度和清洗水平的测量数据进行归一化的程序。为了验证所开发的程序,获得了25°C下的可产性曲线,并与制造商发布的曲线进行了比较。两曲线吻合良好,最大偏差为7%。
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引用次数: 0
ZVS Operation Range Analysis and Deadband Conditions of A dual H-bridge Bidirectional DC-DC Converter with Phase Shift Control 带移相控制的双h桥双向DC-DC变换器ZVS工作范围分析及死带条件
Ahmed Hamed Ahmed Adam, Shuaicheng Hou, Jiawei Chen
In this paper, a comprehensive analysis of ZVS operation range and deadband conditions of a dual H-bridge bidirectional DC-DC converter with phase shift control is presented. The operational principles and the equivalent circuits considering the effect of ZVS capacitor and the deadband on the soft switching operation range of DAB converter are discussed. Based on the solution of the differential equation of the circuit during the deadband, the sufficient constraints of the input and output bridge for software switching are calculated. The results show that, the minimum value of the phase shift needed to achieve ZVS decreases with increase in the output voltage. Increasing the value of phase shift will also increase the ZVS range and reduces switching losses. The simulation results have been provided under various operating conditions, which confirms the theoretical analysis of the proposed system. The result also showed the circuit behavior during the deadband, and the waveforms are obtained. Finally, theoretical considerations and simulation results for different operating stages are verified by MATLAB/ SIMULINK.
本文全面分析了一种双h桥双向移相DC-DC变换器的ZVS工作范围和死带条件。讨论了考虑ZVS电容和死带对DAB变换器软开关工作范围影响的工作原理和等效电路。在解出电路死区微分方程的基础上,计算了软件开关的输入输出桥的充分约束条件。结果表明,实现ZVS所需的最小相移值随着输出电压的增大而减小。增加相移的值也将增加ZVS范围和减少开关损耗。在各种工况下的仿真结果验证了所提出系统的理论分析。结果还显示了电路在死带时的特性,并得到了波形。最后,通过MATLAB/ SIMULINK对不同运行阶段的理论考虑和仿真结果进行了验证。
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引用次数: 1
The Impact of CLOD Load Model Parameters on Dynamic Simulation of Large Power Systems CLOD负荷模型参数对大型电力系统动态仿真的影响
A. S. Hoshyarzadeh, H. Zareipour, P. Keung, Syed Sabbir Ahmed
The objective of this paper is to explore how optimal load model parameters impact the results of dynamic simulations in power systems. We focus on identifying the parameters for CLOD composite models that are widely used in power industry to represent major loads in dynamic simulations. This model accounts for the diversity of load components by representing a variety of elements, including large and small motors and static loads. We use evolutionary-based optimization methods to minimize the error between PMU measurements and dynamic PSS/E simulations for fault-induced voltage events. We compare the simulations results obtained using optimized load models with those of generic models that are often used in the industry. We provide simulation results based on real-life data from Alberta’s electrical power system.
本文的目的是探讨最优负荷模型参数对电力系统动态仿真结果的影响。我们的重点是确定在电力工业中广泛使用的CLOD复合模型的参数,以表示动态仿真中的主要负载。该模型通过表示各种元素(包括大型和小型电机和静态负载)来说明负载组件的多样性。我们使用基于进化的优化方法来最小化PMU测量值与故障感应电压事件动态PSS/E模拟之间的误差。将优化负荷模型的仿真结果与工业上常用的一般负荷模型的仿真结果进行了比较。我们提供了基于阿尔伯塔电力系统真实数据的模拟结果。
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引用次数: 2
Study on the positioning of a smart sensor for the assessment of UV radiation exposure in outdoor workers 户外工作人员紫外线暴露评估智能传感器的定位研究
L. Gugliermetti, C. Burattini, F. Bisegna, A. Militello, M. Borra
The assessment of UV radiation exposure in outdoor workers is feasible by means of smart sensors that avail of Information and Communication Technology (ICT). Using wearable sensors, the single workers’ exposure can be effectively assessed in the whole body. This work investigated the best position of the sensor on the workers’ body, considering the aim of the sensor, its functioning and workers’ comfort.
利用信息和通信技术(ICT)的智能传感器,对户外工作者的紫外线辐射暴露进行评估是可行的。使用可穿戴传感器,可以有效地评估单个工人的全身暴露情况。考虑到传感器的目的、功能和工人的舒适度,本工作调查了传感器在工人身上的最佳位置。
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引用次数: 1
Investigation of Electrical Faults in a DC Microgrid Based on the Identification of Impedances in Differential Mode 基于差分模式阻抗识别的直流微电网电气故障研究
D. Bensaad, B. tabbache, A. Ales, A. Hadjadj
Locating defects and their speed of resolution is the most ambitious goal of an electrical installation. In this context, the work proposes an investigation study in a DC microgrid based on the identification of the differential mode impedance as a reference model, more than on the diagnosis of the degradation of the passive components and in particular the filter capacitors. The model presents the whole system which allows it to monitor the state of the whole cell. It facilitates the maintenance of the installation in the preventive as corrective and increases the system reliability. The document provides analytical analysis tested by simulation and validated experimentally over a wide frequency range.
定位缺陷及其解决速度是电气安装的最大目标。在这种情况下,该工作提出了一项基于差分模式阻抗识别作为参考模型的直流微电网调查研究,而不是对无源元件,特别是滤波电容器退化的诊断。该模型呈现了整个系统,使其能够监控整个细胞的状态。方便了预防性和纠正性的安装维护,提高了系统的可靠性。该文件提供了通过模拟测试的分析分析,并在很宽的频率范围内进行了实验验证。
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引用次数: 0
Temperature Calculation and Measurement on Power Cable Conductor Based on Equivalent Thermal Circuit and BOTDA 基于等效热电路和BOTDA的电力电缆导体温度计算与测量
Jing Zhou, Kai Yao, Xiaowei Huang, G. Sun, Weijia Zhang, Ahsan Ashtaq, Yi Hao, Yu Chen
China's Hainan network system 500kV AC submarine cable has the world's largest length and the second largest capacity in the world, with very important political and economic significance. The surface temperature of the power cable is estimated to calculate the internal conductor temperature and the current rating capacity. Firstly, the principle of testing is introduced, which is the principle of temperature testing of the optical cable bundled on the power cable surface using the Brillouin optical time domain reflectometer tester. Secondly, the power cable current rating experiment was designed. The power cable is bundled on the surface of the 10 meter optical cable. The BOTDA distributed temperature tester is attached to both ends of the power cable to monitor the power cable surface, record the surface temperature of the power cable, and route the power cable through cable heater. Use the power cable heat cycling test system to heat the power cable, the temperature of cable conductor is monitored by a thermocouple, and clamp current meter monitors the current rating capacity of the conductor, changes the regulation value of the through transformer, recording the temperature and load of the power cable conductor. Finally, this method of bundling the optical cable on the power cable surface was verified, which provided an experimental basis for submarine cable temperature monitoring.
中国海南网系统500kV交流海底电缆是世界上最长、容量第二大的海底电缆,具有非常重要的政治和经济意义。通过对电缆表面温度的估算,可以计算出电缆内部导体的温度和额定电流容量。首先介绍了测试原理,即利用布里渊光时域反射计测试仪对电力电缆表面捆扎的光缆进行温度测试的原理。其次,设计了电力电缆额定电流实验。电源线绑扎在10m光缆的表面。BOTDA分布式温度测试仪安装在电源线两端,用于监控电源线表面温度,记录电源线表面温度,并指导电源线走线。利用电力电缆热循环测试系统对电力电缆进行加热,通过热电偶监测电缆导体的温度,钳形电流表监测导体的额定电流容量,改变通过变压器的调节值,记录电力电缆导体的温度和负载。最后,对这种光缆在电力电缆表面捆扎的方法进行了验证,为海底电缆温度监测提供了实验依据。
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引用次数: 5
期刊
2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)
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