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2020 International Conference on Power, Energy and Innovations (ICPEI)最新文献

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Tie-Line Constrained Multi-Area Generation Scheduling Using Mixed Integer Programming Part II: Results and Discussion 基于混合整数规划的结合线约束多区域发电调度第二部分:结果与讨论
Pub Date : 2020-10-14 DOI: 10.1109/ICPEI49860.2020.9431487
N. Petcharaks, P. Nantiwattana, K. Chayakulkheeree, S. Nirukkanaporn
This paper is the part II of the two parts research papers. The objective of this work is to obtain an appropriate generation schedule satisfying system constraints and unit operation constraints with effective spinning reserve without tie-line congestion problem. The hybrid mixed integer programming process includes mixed-integer linear programming and quadratic programming (MILP-QP) is used to find the feasible solutions with total cost minimization while satisfying all important constraints. MILP is used to find generation schedule whereas QP is used to perform economic dispatch. It is tested on a ten unit system in three cases with 1, 2 and 3 areas linking with tie lines under DGS (Decentralized Generation Scheduling) and CGS (Centralized Generation Scheduling). Numerical results show that MILP-QP with DC line flow and virtual load constraints could provide feasible solutions effectively. Without virtual load constraints, line congestions may occur due to unforeseen higher load demand in next few minutes.
本文是两部分研究论文的第二部分。本文的研究目标是在不存在联络线拥塞问题的情况下,获得一个既满足系统约束又满足机组运行约束、具有有效自旋储备的发电计划。混合整数规划过程包括混合整数线性规划和二次规划(MILP-QP),用于在满足所有重要约束的情况下寻找总成本最小的可行解。MILP用于寻找发电计划,QP用于执行经济调度。在DGS(分散式发电计划)和CGS(集中式发电计划)下,在1、2和3区与联络线连接的三种情况下,对10个机组系统进行了测试。数值计算结果表明,考虑直流线路潮流和虚拟负荷约束的MILP-QP能够有效地提供可行的解。如果没有虚拟负载约束,在接下来的几分钟内,由于不可预见的更高负载需求,可能会发生线路拥堵。
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引用次数: 0
Optimal Position of a Wayside Energy Storage Based on Power Loss Minimization in a Railway Station Platform 基于功率损耗最小化的车站站台路旁储能最优位置
Pub Date : 2020-10-14 DOI: 10.1109/ICPEI49860.2020.9431452
Sathit Chimplee, T. Ratniyomchai, T. Kulworawanichpong
Electric power losses are wasteful energy in every system. There are plenty of researchers who proposed methods to reduce power losses. To achieve more efficient use of energy sources. This paper represents a method of finding the optimal position of a wayside energy storage attached to a passenger station platform. The test starts with collecting the regenerative braking energy acquired from an arriving train to the stopping platform. This braking energy is useful to accelerate a departing train apart from the station. If there is no train standing on the departing platform, the braking energy is rerouted and therefore is stored in a stationary energy storage device. The reuse of braking energy is free. However, it may be wasteful due to a relatively long leading current-carrying cables. To minimize the wasteful energy of the feeding cables, position of the stationary energy storage can be allocated to an appropriate location in such a way that the overall feeder losses are minimized.
电力损耗在每个系统中都是一种能源浪费。有很多研究人员提出了减少功率损耗的方法。实现更有效地利用能源。本文提出了一种寻找车站月台路旁储能系统最优位置的方法。测试从收集从到站列车获得的再生制动能量到停车平台开始。这种制动能量对加速驶离车站的火车是有用的。如果没有列车停在出发的站台上,制动能量将被改变路线,因此被存储在一个固定的能量存储装置中。制动能量的再利用是免费的。但是,由于超前载流电缆相对较长,可能会造成浪费。为了最大限度地减少馈电电缆的能量浪费,可以将固定储能的位置分配到适当的位置,从而使馈线的整体损失最小化。
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引用次数: 0
Performance Improvement of Lead Acid Battery by High Frequency Stimulation 利用高频刺激改善铅酸蓄电池性能
Pub Date : 2020-10-14 DOI: 10.1109/ICPEI49860.2020.9431441
Tharathip Phurahong, Somsak Sanmuang, J. Sarasook
This paper presents performance improvement of old lead acid battery which usually used in car. When it is used in the long time, the efficiency is reduced. A problem is occurred because it is covered by sulfate on the surface of the lead plate electrode. This cause on current supply efficiency of the battery is decreased because resistance increases. This research presents the way to solve the problem. The sulfate must remove out of surface of the lead plate electrode. The high frequency stimulation signal generation is applied. A car battery 12 V 75 AH is experimentally tested. CCA meter model of AE300 is as a tool for efficiency observing. The high-frequency stimulation circuit at 64.7 kHz is designed. The experiments were done by applying DC voltage as a ripple high-frequency onto the electrode plates with different time intervals. The result shows that Cold Cranking Amp (CCA) value of the battery is increased. Therefore, it can be summarized that 64.7 kHz high frequency stimulation can increase the efficiency of battery.
介绍了车用旧铅酸蓄电池的性能改进。当长时间使用时,效率会降低。出现问题是因为铅板电极表面被硫酸盐覆盖。由于电阻增大,导致电池的供电效率降低。本研究提出了解决这一问题的途径。硫酸盐必须从铅板电极表面去除。采用高频刺激信号发生器。对12 V 75 AH的汽车蓄电池进行了实验测试。AE300的CCA仪表模型作为效率观测的工具。设计了64.7 kHz的高频刺激电路。实验是通过在不同时间间隔的极板上施加直流高频纹波电压来完成的。结果表明,电池的冷启动安培(CCA)值有所提高。综上所述,64.7 kHz高频刺激可以提高电池的效率。
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引用次数: 1
Conceptual Design for Modifying EV Minivan Bus for Korat City Korat市电动客车改型方案设计
Pub Date : 2020-10-14 DOI: 10.1109/ICPEI49860.2020.9431574
Y. Kongjeen, Krittidet Buayai, Prajuab Inrawong, Kaan Kerdchuen, Pisan Tangyarit, Mongkol Danbumrungtrakul, P. Srithorn, Kanyanat Kerdchuen
This paper proposes the conceptual design for modifying minivan as an Electric Vehicle (EV) for driving as the bus in Korat city. The normal bus of Korat city is a minivan using diesel engine. The EV equipment is considered to replace a diesel engine of minivan bus. The approximated weight and routine routing are used to calculate the motor and battery storage sizes. The route length is 25 km and minivan stop point is 28. The results of conceptual design show that the EV minivan uses a permanent magnet synchronous motor (PMSM) 60kW and 46kWh Lithium Nickel Manganese Cobalt Oxide (Lithium-NMC) battery can run around for 10 rounds (250km.) a charging. The maximum speed of EV equipment selection is 150km/h. Thus, the EV charging station can be installed at the route parking station.
本文提出了在喀拉拉市将小型货车改装成电动汽车作为公共汽车行驶的概念设计。Korat市的普通公交车是使用柴油发动机的小型货车。该电动汽车设备有望取代小型客车的柴油发动机。使用近似的重量和常规路由来计算电机和电池的存储尺寸。路线长度为25公里,小型货车停靠点为28个。概念设计结果显示,EV小型货车采用60kW的永磁同步电机(PMSM)和46kWh的锂镍锰钴氧化物(锂- nmc)电池,一次充电可行驶10圈(250公里)。电动汽车设备选择的最高速度为150km/h。因此,电动汽车充电站可以安装在路线停车站。
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引用次数: 1
Energy Consumption Study of Rapid Charging of Catenary Free Light Rail Transit 无接触线轻轨交通快速充电能耗研究
Pub Date : 2020-10-14 DOI: 10.1109/ICPEI49860.2020.9431573
Chalita Jobsoongnern, T. Ratniyomchai, T. Kulworawanichpong
This paper presents the energy consumption study of catenary free light rail transit system using an on-board battery system as a main motive power source. This paper proposes a case study of energy consumption which has 3 sub-cases of charging points: i) charging at every stop, ii) charging at every 5 stops and charging once after one round trip. The charge is conducted by a rapid charge at the charging stop with dwell time of 20 seconds. By using the route of Korat Light Rail Transit Green Line project in Nakhon Ratchasima, Thailand that are 20 passenger stops and a total round-trip distance of 22 km. The total energy consumption for one round trip of the route is 136.866 kWh. For the different 3 cases, the different charging point effect to energy consumption, battery size and the cost of the battery. The longer the distance between the two consecutive charging points, the larger the kWh capacity of the on-board battery for the vehicle.
本文对以车载蓄电池系统为主要动力源的无接触网轻轨交通系统的能耗进行了研究。本文提出了一个能源消耗案例研究,该案例将充电点分为3个子案例:1)每站充电,2)每5站充电,1次往返充电。在充电站进行快速充电,停留时间为20秒。通过使用泰国叻叻轻轨绿线项目的路线,该项目有20个乘客站,总往返距离为22公里。该线路往返一次总能耗为136.866千瓦时。对于不同的3种情况,不同的充电点对能量消耗,电池尺寸和电池成本的影响。两个连续充电点之间的距离越长,车载电池的千瓦时容量就越大。
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引用次数: 0
Energy Saving Study of Mass Rapid Transit by Optimal Train Coasting Operation 基于列车优化滑行操作的轨道交通节能研究
Pub Date : 2020-10-14 DOI: 10.1109/ICPEI49860.2020.9431507
Artiya Sopharak, T. Ratniyomchai, T. Kulworawanichpong
This paper presents a movement of electric train between two-passenger stopping stations with the goal of minimized total energy consumption during the journey. A train movement is based on a sequence of four operation modes: i) accelerating mode, ii) constant speed or cruising mode, iii) coasting mode and iv) braking mode. The optimization problem in which the train speed profile is optimized by controlling of three parameters: i) acceleration rate ii) deceleration rate and iii) location of coasting point. By using Quadratic Search Method (QDS) which is a mathematical method to calculate the optimal location of the coasting point, with the goal of using the minimum energy consumption and no effects with the train movement and the operating time of the train services. The case study applied in this paper is a mass rapid transit system which travels between two passenger stations with a service distance of 1 km and a maximum speed of 45 km/h. The results showed that the longer distance of the coasting mode the less power consumption in the cruising mode and the less power from the brake mode. On the other hand, the short distance of the coasting mode the more power in cruising mode and the more power from the brake mode. It is found that the optimal location of the coasting point obtained by QDS is considerably capable to reduce the overall energy consumption by 3.8%.
本文提出了一种以总能耗最小为目标的电动列车在两站间的运行。列车运动基于四种运行模式的序列:1)加速模式,2)匀速或巡航模式,3)滑行模式和4)制动模式。通过控制加速速率、减速速率和滑行点位置三个参数来优化列车速度剖面的优化问题。采用二次搜索法(Quadratic Search Method, QDS)这一数学方法,以能量消耗最小,不影响列车运行和列车服务运行时间为目标,计算出最优的滑行点位置。本文应用的案例研究是一个在两个客运站之间运行的轨道交通系统,服务距离为1公里,最高速度为45公里/小时。结果表明,滑行模式的距离越长,巡航模式的功率消耗越小,制动模式的功率消耗越小。另一方面,滑行模式的距离越短,巡航模式的功率越大,制动模式的功率越大。研究发现,QDS获得的最优滑行点位置能够显著降低总能耗3.8%。
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引用次数: 1
Analysis and Implement DC-DC Integrated Boost-Flyback Converter with LED Street Light Stand-by Application DC-DC集成升压-反激变换器在LED路灯待机中的分析与实现
Pub Date : 2020-10-14 DOI: 10.1109/ICPEI49860.2020.9431495
K. Luewisuthichat, P. Boonprasert, C. Ekkaravarodome, A. Bilsalam
This paper proposed analysis and implement DC-DC integrated boost-flyback converter (IBFC) with LED street light stand-by application. This power state circuit was designed based on the boost–flyback topology, which has as main characteristic high voltage gain. Normally, the boost – flyback is designed with the low input voltage application. The advantage of this technique is that use boost converter built up voltage and low current stress of the power switch. A protype single switch was built and operated at 56 kHz fixed switching frequency, 32 VDC output voltage, and 50 W output power and the efficiency is equal to 90 % at the maximum full load. The proposed circuit design was verified via experimental results, which were found to be in agreement with the theoretical analysis.
本文提出了一种用于LED路灯待机的DC-DC集成升压-反激变换器(IBFC)的分析与实现。基于升压反激拓扑设计了以高电压增益为主要特点的功率状态电路。通常情况下,升压反激电路是在低输入电压下设计的。这种技术的优点是利用升压变换器建立起电压和低电流应力的电源开关。建立了单开关样机,在56 kHz固定开关频率、32 VDC输出电压、50 W输出功率下工作,最大满载时效率为90%。通过实验验证了所提出的电路设计,结果与理论分析一致。
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引用次数: 0
The Comparison of Deep Learning Driven Optical Character Recognition for Hard Disk Head Slider Serial Number 深度学习驱动的硬盘磁头滑块序列号光学字符识别的比较
Pub Date : 2020-10-14 DOI: 10.1109/ICPEI49860.2020.9431431
Palakorn Imsamer, Vorachat Boonyaphon, S. Tiacharoen
This paper presents the development of an optical character recognition system by using deep learning which is trained by the Faster_Rcnn_Inception_V2 and SSD_Mobilenet_V1 model through the Tensorflow object detection API library. To build the character set recognition system, 466 images of the character set of hard disk head slider were used for training the model to build the character set recognition system. For the Faster_Rcnn_Inception_V2 model, the model was trained by 12570 epochs with the 0.0456 of loss value. In case of the SSD_Mobilenet_V1 model, the model was trained by 99051 epochs with the 0.9329 of loss value. From the results, the character set recognition system using Faster_Rcnn_Inception_V2 model, SSD_Mobilenet_V1 model and the template matching method, the accuracy in character set recognition of these methods are 83.5%, 1.5% and 4.5% respectively. The software creation of this paper focuses on the Python language and the TensorFlow library.
本文通过Tensorflow对象检测API库,采用Faster_Rcnn_Inception_V2和SSD_Mobilenet_V1模型进行训练,开发了一种基于深度学习的光学字符识别系统。为了构建字符集识别系统,使用466张硬盘磁头滑块的字符集图像进行模型训练,构建字符集识别系统。对于Faster_Rcnn_Inception_V2模型,模型经过12570次epoch的训练,loss值为0.0456。对于SSD_Mobilenet_V1模型,模型训练了99051次epoch, loss值为0.9329。从结果来看,采用Faster_Rcnn_Inception_V2模型、SSD_Mobilenet_V1模型和模板匹配方法的字符集识别系统,这三种方法的字符集识别准确率分别为83.5%、1.5%和4.5%。本文的软件开发重点是Python语言和TensorFlow库。
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引用次数: 0
Zeroth-order Resonator Antenna using Meandered Arm on Jerusalem Geometry in Mushroom-like Structure 蘑菇状结构耶路撒冷几何上的弯曲臂零阶谐振器天线
Pub Date : 2020-10-14 DOI: 10.1109/ICPEI49860.2020.9431540
Tanaporn Pechrkool, Tanan Hongnara, S. Chaimool, Prayoot Akkaraekthalinn
This paper presents a compact zeroth-order resonator antenna by using meandered arm on Jerusalem geometry in mushroom-like structure. The ZOR antenna compose of two main elements including the modified Jerusalem shape in mushroom-like structure and microstrip-fed transmission line. Both of them can cooperate together to perform the zeroth-order of phase constant at the operating frequency of the proposed antenna. The antenna has very compact area of radiating patch with 20 × 45 mm2. Then, the omnidirectional radiation pattern can be provided in the plane of antenna patch.
本文提出了一种采用弯曲臂的紧凑型零阶谐振器天线。ZOR天线主要由蘑菇状结构的改良耶路撒冷形状和微带馈电传输线两部分组成。在天线工作频率下,两者可以协同执行零阶相位常数。天线的辐射贴片面积非常小,为20 × 45 mm2。然后,可以在天线贴片平面内提供全向辐射方向图。
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引用次数: 0
A Study of Methods for Detecting Batocera Rufomaculata 牛痘天竺葵检测方法的研究
Pub Date : 2020-10-14 DOI: 10.1109/ICPEI49860.2020.9431483
Khwanjit Orkweha, Wuthikrai Chankhamrian, Sujitra Thipsrirach
This research aims to study the feasibility of using frequency wave to detect Batocera rufomaculata (De Geer) penetrating durian stems. The X-Band Motion Detector is designed to emit a 10.525 GHz of frequency and transmit it through the cavity wood. The designed frequency is implemented for early stages of the Batocera rufomaculata (De Geer). The developed device operates at 0.2A, 239V and 47.80W. Experiment is set up to verify the hole positions of durian wood. Three different types of woods are selected to test in the experiments. The experimental results show that the designed device is able to precisely detect the hole position. However, due to rough texture of bark, lenticel of the wood, there is an error occurring in dropper frequency which may result in the performance of the detecting device.
本研究旨在探讨利用频率波检测穿透榴莲茎部的牛痘虫(Batocera rufomaculata)的可行性。x波段运动探测器的设计发射频率为10.525 GHz,并通过空腔木材传输。设计的频率是实现的早期阶段的Batocera rufomaculata (De Geer)。所开发的器件工作在0.2A, 239V和47.80W。通过实验验证了榴莲木材的孔洞位置。实验中选择了三种不同类型的木材进行测试。实验结果表明,所设计的装置能够精确地检测出孔的位置。然而,由于树皮的粗糙纹理,木材的皮孔,滴管频率会出现误差,这可能会影响检测装置的性能。
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引用次数: 0
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2020 International Conference on Power, Energy and Innovations (ICPEI)
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