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2018 International Conference and Exposition on Electrical And Power Engineering (EPE)最新文献

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Novel Objective Function Involving Integral Power Quality Criterion for Distributed Generation Planning 分布式发电规划中包含积分电能质量准则的新目标函数
S. Gusev, V. Oboskalov, R. Valiev, M. Cherepanova, I. Zicmane, K. Berzina, Jevgenijs Kuckovskis
Over the past 10 years, the use of distributed generation (DG) has become one of the important directions in the development of the electric power industry in many countries across the world. According to its purpose, DG is used to supply remote electricity consumers. In conditions of market uncertainty in the development of the energy sector, one of the most profitable solutions for increasing the reliability of consumer power supply is to install a small-scale generation near the distant loads. Under such option the risks of energy shortage and loss of power supply from power source of the main network are reduced, reliability of power supply is improved, the energy quality parameters are improved, power and energy losses are reduced. However, the growth of the DG penetration in electric power systems (EPS) has not only positive aspects, but also creates certain technical problems that are associated with fluctuations of EPS parameters as well as with DG controllability under normal and emergency conditions. These problems can be solved but at the cost of more complex EPS dispatch and automatic control. The solution requires new mathematical models to substantiate the development of EPS and power supply systems, to analyze and to manage their state. In this article the authors propose a novel mathematical model for DG planning and optimization basing on integral quality criterion that incorporates power supply quality and reliability.
近十年来,采用分布式发电已成为世界上许多国家电力工业发展的重要方向之一。根据其用途,DG用于向远程用户供电。在能源部门发展的市场不确定条件下,提高消费者电力供应可靠性的最有利可图的解决方案之一是在远距离负荷附近安装小型发电机组。该方案降低了主网电源缺电和失电的风险,提高了供电可靠性,改善了电能质量参数,减少了电能和能量损失。然而,DG在电力系统中的渗透率的增长既有积极的一面,也带来了一定的技术问题,这些问题与EPS参数的波动以及DG在正常和紧急情况下的可控性有关。这些问题可以得到解决,但代价是更复杂的EPS调度和自动控制。解决方案需要新的数学模型来证明EPS和供电系统的发展,分析和管理它们的状态。本文提出了一种基于集成电源质量和可靠性的综合质量准则的DG规划优化数学模型。
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引用次数: 0
About Some Connection Modes of the Current Conducting Paths 关于电流传导路径的几种连接方式
A. Dragomir, M. Adam, M. Andrusca, D. Astanei, L. Andruşcǎ, C. Dumitrescu
This paper aims to present the most suitable choice for the electrical connection of two current conducting paths. In this regard, the paper proposes both electrical and mechanical analysis of the connection of the two current paths in three distinct modes. The purpose of this analysis is to determine the elastic deformation field and the temperatures occurring in the construction parts of the electrical connection due in particular to thermal stresses. On two experimental stand will be performed tests to determine the mechanical stress, respectively thermal stresses of an electrical connection from a bus bar system connected in three distinct modes.
本文的目的是提出两个电流传导路径电气连接的最合适选择。在这方面,本文提出了电气和力学分析的连接的两个电流路径在三种不同的模式。这种分析的目的是确定弹性变形场和温度发生在电气连接的结构部分,特别是由于热应力。将在两个实验台上进行测试,分别确定以三种不同模式连接的母线系统的电气连接的机械应力和热应力。
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引用次数: 1
Sensors and Transducers Laboratory Kiosk 传感器和传感器实验室亭
M. Branzila, C. Sărmășanu, Denisa Ciudin, D. Lăcătuşu
The paper present an interactive kiosk that can be used to increase the students’ interest in Sensors and transducers Laboratory. It also has a teaching goal but without being a virtual laboratory. The main issue we intend to solve using this interactive kiosk in the field of education, as a novelty, is to reduce students’ lack of interest in practical work. The advantage is interaction improvement of the student with the teacher by bringing useful, dynamic and interactive information about the laboratory and the activities carried out here. Last but not least, the low cost can also be considered in the context of growing interest in open source. The web interface is accessible to any type of user and beyond providing information about students’ projects, it offers the possibility of sending an email about the issue of a lab or course followed under the guidance of a teacher working in this laboratory.
本文介绍了一个互动的信息亭,可以用来提高学生对传感器和传感器实验室的兴趣。它也有一个教学目标,但不是一个虚拟实验室。我们想要解决的主要问题是,在教育领域使用这种互动式信息亭,作为一种新奇的东西,减少学生对实际工作缺乏兴趣。其优点是通过提供有关实验室和在这里开展的活动的有用的、动态的和互动的信息,提高了学生与老师的互动性。最后但并非最不重要的一点是,低成本也可以在人们对开源越来越感兴趣的背景下考虑。网络界面对任何类型的用户都是可访问的,除了提供有关学生项目的信息之外,它还提供了在实验室工作的老师的指导下发送关于实验室或课程问题的电子邮件的可能性。
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引用次数: 1
Monitoring System for Home-Based Hand Rehabilitation 居家手部康复监测系统
R. Ciorap, D. Andritoi, M. Ciorap, M. Munteanu
The paper proposes a solution for monitoring of cardiovascular parameters during home-based hand rehabilitation. The most important cause of long-term disability in Europe is cerebral vascular accident (CVA) or stroke. The effects of stroke can vanish after a short period or can remain for the rest of the life depending on therapeutic program. The system developed for this study is not only therapeutically devices that allow the movement of hand for physical exercises controlled by electromyography (EMG) but also record one or more biomedical parameters such as: electromyogram (EMG), electrocardiogram (ECG), pulse wave, heart rate (HR), temperature, respiration rate, non-invasive blood pressure (NIBP) or oxygen concentration in the blood (SpO2). These physiological parameters are selected according to the physician’s prescription and the patient needs. In this paper it is presented an application that refers to the hand rehabilitation of post-stroke. It was observed the cardiovascular system status, analyzing the heart rate variability. During therapeutic procedure it was recorded ECG (1 lead) and pulse wave (using an ear lobe sensor). After that HRV was calculated for each signal. The results were used to determine the stress level induced by the rehabilitation program.
本文提出了一种家庭手部康复过程中心血管参数监测的解决方案。在欧洲,导致长期残疾的最重要原因是脑血管意外(CVA)或中风。中风的影响可以在短时间内消失,也可以持续一生,这取决于治疗方案。为本研究开发的系统不仅是一种治疗设备,可以通过肌电图(EMG)控制手部运动进行体育锻炼,而且还可以记录一个或多个生物医学参数,如:肌电图(EMG)、心电图(ECG)、脉搏波、心率(HR)、温度、呼吸频率、无创血压(NIBP)或血液中氧浓度(SpO2)。这些生理参数是根据医生的处方和病人的需要来选择的。本文介绍了它在脑卒中后手部康复中的应用。观察心血管系统状态,分析心率变异性。在治疗过程中记录心电图(1导联)和脉搏波(使用耳垂传感器)。然后计算每个信号的HRV。结果用于确定康复计划引起的应激水平。
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引用次数: 3
Considerations Regarding Minimal Fuzzy Logic Algorithms 关于最小模糊逻辑算法的考虑
Cristina Vatavu
The need to reduce memory and processing power requirements in order to achieve implementations of dedicated structures with satisfying settling times for any type of process has lead to the development of the fuzzy logic minimal control algorithm. A minimal approach is applied to all three components: fuzzification, decision and defuzzification interface levels. The obtained algorithm has a normalized, and thus versatile, structure. In these conditions its evaluation consists of the analysis of the performance of a control system obtained by varying the parameters (amplifying factors) of the minimal algorithm.
由于需要减少内存和处理能力的要求,以实现具有满足任何类型过程的稳定时间的专用结构,这导致了模糊逻辑最小控制算法的发展。一个最小的方法应用于所有三个组件:模糊化,决策和去模糊化接口级别。所得到的算法具有规范化的结构,因此具有通用性。在这些条件下,它的评估包括通过改变最小算法的参数(放大因子)来分析控制系统的性能。
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引用次数: 0
About Monitoring of Medium Voltage Circuit Breakers with SF6 浅谈SF6对中压断路器的监测
Mihai Andrucã, M. Adam, A. Dragomir, D. Astanei, Liviu Andrucã
Medium voltage circuit breakers are important components on the chain of production, transmission and distribution of the energy to the consumers. The circuit breaker importance is from its capacity to make and break the currents from normal rated parameters and from short circuit currents. Over time the circuit breakers are losing them properties to break the high currents because of ageing and other electrical and mechanical stresses. From this fact is necessary to monitoring some parameters of circuit breaker. The goal of circuit breakers monitoring is to know its condition for minimize the equipment failure risk and to prevent undesirable interruptions and their effects. The paper presents the importance of a medium voltage circuit breaker with SF_6 in the power system, a monitoring system which was interfacing with the circuit breaker, respectively the waveforms and values obtained from its.
中压断路器是电力生产、输送和分配环节的重要组成部分。断路器的重要性在于它能使电流脱离正常额定参数和短路电流。随着时间的推移,由于老化和其他电气和机械压力,断路器正在失去断开大电流的性能。从这一点出发,有必要对断路器的一些参数进行监测。断路器监测的目的是了解断路器的状态,以尽量减少设备的故障风险,防止意外的中断及其影响。本文介绍了SF_6型中压断路器在电力系统中的重要性,介绍了与SF_6型中压断路器相连接的监测系统,给出了SF_6型中压断路器的波形和测量值。
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引用次数: 0
Radiofrequency Stimuli Applied to Suspensions Containing Biogenic Magnetite Nanocrystals: Absorbed Energy Conversion 射频刺激应用于含有生物源磁铁矿纳米晶体的悬浮液:吸收的能量转换
S. Miclaus, P. Bechet, G. Mihai, C. Moisescu, I. Ardelean, L. Barbu-Tudoran, T. Radu, S. Oancea, M. Răcuciu
Water-based suspensions of magnetotactic bacteria (MTB) containing magnetite (Fe3O4) nanocrystals in the form of magnetosomes (MS) chained inside the bacteria cells have been exposed to radiofrequency fields with the aim of observing how the electromagnetic energy is converted and expressed as thermal or non-thermal effects. A wide frequency band was tested, (0.1-2.9) GHz, by applying continuous wave stimuli. Significant field strength components were provided and characterized, by using a GTEM cell and adequate expo-dosimetric instruments. The heating rates of the suspensions were measured. Because the recorded values were very low, non-thermal expression of energetic conversion was further investigated by scanning-transmission electron microscopy methods, by various spectroscopic means and by electrical conductivity determinations. Clear non-thermal effects were revealed, which need further research.
磁性细菌(MTB)的水基悬浮液中含有磁性小体(MS)形式的磁铁矿(Fe3O4)纳米晶体,这些纳米晶体被链在细菌细胞内,研究人员将其暴露在射频场中,目的是观察电磁能量如何转换并以热效应或非热效应表示。通过施加连续波刺激,测试了较宽的频带(0.1-2.9)GHz。通过使用GTEM细胞和适当的暴露剂量测量仪器,提供并表征了显著的场强成分。测量了悬浮液的升温速率。由于记录值非常低,因此通过扫描透射电子显微镜方法、各种光谱方法和电导率测定进一步研究了能量转换的非热表达。已发现明显的非热效应,有待进一步研究。
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引用次数: 0
Influence of Photovoltaic Power Plants on Single-Phase Faults in Medium Voltage Electrical Networks 光伏电站对中压电网单相故障的影响
Sebastian Mihaes, M. Istrate
This paper approaches the problem of contributing to single-phase faults of photovoltaic power plants, connected in a medium voltage electrical network, having mixed neutral grounding. The introduction of the photovoltaic power plants into a distribution network may leads to rise many technical problems, therefore, behaviour of such energy sources, under various disturbances, must be studied and known to the distribution grid operators. In this paper, using the ATP program, a medium voltage grid was modelled in the aim to analyse the contribution of photovoltaic power plants to the single line-to-ground faults and to the single-phased short-circuit.
本文研究了在中压电网中采用混合中性点接地的光伏电站单相故障的成因问题。将光伏电站引入配电网可能会引起许多技术问题,因此,配电网运营商必须对这种能源在各种干扰下的行为进行研究和了解。本文利用ATP程序对中压电网进行了建模,分析了光伏电站对单线对地故障和单相短路的贡献。
{"title":"Influence of Photovoltaic Power Plants on Single-Phase Faults in Medium Voltage Electrical Networks","authors":"Sebastian Mihaes, M. Istrate","doi":"10.1109/ICEPE.2018.8559606","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559606","url":null,"abstract":"This paper approaches the problem of contributing to single-phase faults of photovoltaic power plants, connected in a medium voltage electrical network, having mixed neutral grounding. The introduction of the photovoltaic power plants into a distribution network may leads to rise many technical problems, therefore, behaviour of such energy sources, under various disturbances, must be studied and known to the distribution grid operators. In this paper, using the ATP program, a medium voltage grid was modelled in the aim to analyse the contribution of photovoltaic power plants to the single line-to-ground faults and to the single-phased short-circuit.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123619417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Specific Absorption Rate Evaluation in Case of Exposure of the Human Body to Radiofrequency Electromagnetic Field Generated by Mobile Communications 人体暴露于移动通信射频电磁场下的比吸收率评估
O. Bejenaru, C. Lazarescu, S. Vornicu, V. David
EMC is a permanent challenge for many items associated with radio communications. Inside this large frame work, human exposure issue should be always considered. For that, it is worth of knowing the impact on the short and on the long term of electromagnetic field irradiation over biological tissues of human body. The present paper is a study over the estimation of specific absorption rate (SAR) on a developed 3D model of the human body in case of exposure to electromagnetic fields generated by mobile communications in some areas (indoor and outdoor) with specific instrumentation (Spectran HF-60105 V4 spectrum analyzer with HyperLOG 60100 antenna). The SAR values was determined by simulation using the CST MW Studio® software and the values were compared with limits values for SAR imposed by ICNIRP (1998) restriction limits and European Directive 2004/40/CE standards, adopted also in Romania by HG number 1136 from 30 august 2006. Additionally, the RSAR, while dealing with simultaneous exposure to different frequency fields should be considered.
EMC是与无线电通信相关的许多项目面临的长期挑战。在这个大框架内,人类暴露问题应始终考虑。因此,了解电磁场辐射对人体生物组织的短期和长期影响是值得研究的。本文研究了利用特定仪器(配备HyperLOG 60100天线的Spectran HF-60105 V4频谱分析仪)对人体三维模型在某些区域(室内和室外)暴露于移动通信产生的电磁场下的比吸收率(SAR)估算。利用CST MW Studio®软件模拟确定了SAR值,并将这些值与ICNIRP(1998)限制限值和欧洲指令2004/40/CE标准所规定的SAR限值进行了比较,该标准也于2006年8月30日在罗马尼亚被HG号1136采用。此外,在处理同时暴露于不同频率场时,应考虑RSAR。
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引用次数: 4
Estimating the distance to an object based on image processing 基于图像处理的物体距离估计
Gafencu Natanael, C. Zet, C. Fosalau
When it comes to vehicles and traffic, the first priority is the safety of the driver and that of pedestrians. With the evolution of technology, the speed of the cars and the traffic increased. This means that there is a need to predict dangers which can arise while someone is driving. Another direction is to develop autonomous cars that can face the present and the future traffic conditions in order to increase the safety and the fluency on the roads. So, in the present paper it is presented a method of determining the distance to a car that drives in front of our own car. The relative speed is also possible to be determined with respect to it. The image, taken with a front camera, is classified using a Convolutional Neural Network, namely YOLO [1] (You Only Look Once) and after the searched object is detected, the distance is estimated counting the number of pixels in a bounding box which fits the detected object. The distance is further corrected by using Canny edge detection and HSV color space. Experimental data are presented in the paper and the results are commented for conclusions.
当涉及到车辆和交通时,首先要考虑的是驾驶员和行人的安全。随着科技的发展,汽车的速度和交通的增加。这意味着有必要预测开车时可能出现的危险。另一个方向是开发能够面对现在和未来交通状况的自动驾驶汽车,以提高道路的安全性和流畅性。因此,在本文中,提出了一种确定与行驶在我们自己汽车前面的汽车的距离的方法。相对速度也可以用它来确定。使用前置摄像头拍摄的图像,使用卷积神经网络进行分类,即YOLO [1] (You Only Look Once),在检测到搜索目标后,计算与检测到的目标匹配的边界框的像素数来估计距离。使用Canny边缘检测和HSV色彩空间进一步校正距离。本文给出了实验数据,并对实验结果进行了评论。
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引用次数: 8
期刊
2018 International Conference and Exposition on Electrical And Power Engineering (EPE)
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