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2019 Innovations in Power and Advanced Computing Technologies (i-PACT)最新文献

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Line outage detection using optimal number of Phasor Measurement Unit 采用最优相量测量单元数进行线路中断检测
Pub Date : 2019-03-01 DOI: 10.1109/i-PACT44901.2019.8960027
H. Kumar, R. Dahiya
The power distribution network needs to be monitored in an effective manner against the line outages. Phasor Measurement Unit (PMU) is a device which is used to estimate the magnitude and phase angle of an electrical phasor quantity. PMUs are distributed globally to provide time synchronized information to operators through phasor data concentrator. In this paper, a new algorithm to identify single line outage using the PMU has been proposed. The voltage phasor angles are taken only at buses where the PMUs are located. Further the optimal location of PMUs is identified by an algorithm based on maximum connectivity of buses. Proposed algorithm is developed in MATLAB environment and tested on IEEE 9 bus system which is simulated in PSAT software.
需要对配电网进行有效的监控,防止线路出现故障。相量测量单元(PMU)是一种用于估计电相量的大小和相角的装置。pmu分布全局,通过相量数据集中器向操作员提供时间同步信息。本文提出了一种利用PMU识别单线中断的新算法。电压相量角仅在pmu所在的总线上取。采用基于总线最大连通性的算法确定pmu的最优位置。该算法在MATLAB环境下进行了开发,并在IEEE 9总线系统上进行了测试,并在PSAT软件中进行了仿真。
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引用次数: 2
A PV-WEC Based Microgrid System incorporating Hybrid Islanding Detection Technique 基于PV-WEC的混合孤岛检测微电网系统
Pub Date : 2019-03-01 DOI: 10.1109/i-PACT44901.2019.8959993
Soumya A. V, J. Edward
This paper investigates the aspects of microgrid formed with distributed energy sources such as Photo Voltaic (PV) solar and wind. Detecting Islanding in a microgrid has become a major challenge in electrical power systems. This project proposes a combination of three islanding detection method, namely voltage unbalance (VU), total harmonic distortion (THD) from passive method and Sandia frequency shift (SFS) from active method. The proposed strategy consolidates the benefits of both active and passive techniques. Moreover, since this project uses the benefits of the SFS method it will not change the system variables and will not lead instability due to any disturbance.
本文研究了利用光伏、太阳能和风能等分布式能源形成微电网的几个方面。检测微电网中的孤岛已成为电力系统的主要挑战。本课题提出了三种孤岛检测方法的组合,即电压不平衡(VU)、被动方法的总谐波失真(THD)和主动方法的桑迪亚频移(SFS)。拟议的战略综合了主动和被动技术的好处。此外,由于本项目使用了SFS方法的优点,它不会改变系统变量,也不会因任何干扰而导致不稳定。
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引用次数: 0
High Performance Visible-Range Photodetector for Wide-Bandwidth Applications 用于宽带应用的高性能可见范围光电探测器
Pub Date : 2019-03-01 DOI: 10.1109/i-PACT44901.2019.8960139
J. Gaitonde, Sunit Digamber Fulari, R. Lohani
We present a theoretical model of front illuminated GaN Optical Field Effect Transistor (OPFET) with floating gate accounting for photovoltaic and photoconductive effects. Our simulation results reveal desirable photodetector characteristics in the visible-region at the modulation frequencies in the microwave to terahertz range. The device exhibits superior performance than many of the photodetectors working at microwave or terahertz frequencies. The device has a great potential for wide bandwidth applications.
我们提出了一种考虑光电和光导效应的前照射GaN光场效应晶体管(OPFET)的理论模型。我们的模拟结果揭示了在微波到太赫兹调制频率范围内可见光区域理想的光电探测器特性。该装置表现出比许多工作在微波或太赫兹频率下的光电探测器优越的性能。该器件具有很大的宽带应用潜力。
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引用次数: 0
Development of LabVIEW front end for a fault injection capable synchronous generator 故障注入同步发电机LabVIEW前端的开发
Pub Date : 2019-03-01 DOI: 10.1109/i-PACT44901.2019.8960163
A. S, A. R., B. T., Gogulanand R., P. V. S. Nag, C. S. Kumar
In modern industries condition monitoring is of great importance and researchers have been developing various algorithms for condition monitoring of equipment. Synchronous generators are the central component in any power station. For testing the condition monitoring algorithms for generators fault injection capable test beds are required. In order that the researchers interact with the fault injection capable synchronous generator in an efficient manner, a good user interface is required. In this work, the requirements of such a user interface are listed and implemented on an actual fault injection capable synchronous generator [8]. LabVIEW has been used to implement the user interface. The work also describes the data acquisition system and signal conditioning used. This work will be of great help to future researchers in this research area for developing fault injection capable systems, especially for electrical machines.
在现代工业中,状态监测非常重要,研究人员开发了各种设备状态监测算法。同步发电机是任何电站的中心部件。为了测试发电机状态监测算法,需要具有故障注入能力的试验台。为了使研究人员能够有效地与具有故障注入功能的同步发电机进行交互,需要一个良好的用户界面。在本工作中,列出了该用户界面的需求,并在实际的具有故障注入功能的同步发电机上实现[8]。使用LabVIEW实现了用户界面。文中还介绍了数据采集系统和所用的信号调理。这一工作将对今后研究人员开发故障注入系统,特别是电机故障注入系统有很大的帮助。
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引用次数: 0
Optimal P-Q Control of Solar Photovoltaic Based Microgrids with Battery storage 基于电池储能的太阳能光伏微电网最优P-Q控制
Pub Date : 2019-03-01 DOI: 10.1109/i-PACT44901.2019.8959518
P. Nayak, Trupty Patel, Nikhil Munda, Ranjan Kumar Mallick
This paper pays an attention to design an optimal controller for PV based microgrid with battery storage. Active and reactive power are the most sensitive parameters which need to be controlled, when there is disturbances(i.e. transient disturbance) in the power grid. A set of P-I controller is present to control the active power and reactive power of the system . It is a tedious work to tune up these PI gains optimally due to the non-linearity and the high complexity of the system. Out of the different methods for solving optimal control problems (whether direct or indirect), Evolutionary algorithm is one. In this paper, concurrently control of reactive power and active power is analyzed by an recently reported metaheuristics technique known as Lightning Search Algorithm, to design the optimal P-Q controllers. The control algorithms are tested with distribution system with presence of fault and without fault. The results shows that the proposed algorithm is efficient to find the optimal parameters of the controllers. The simulations studies are carried out in MATLAB and Simpower systems.
本文研究了基于光伏电池储能的微电网最优控制器的设计。有功功率和无功功率是需要控制的最敏感参数,当存在干扰时(如:电网中的瞬态扰动。提出了一套P-I控制器来控制系统的有功功率和无功功率。由于系统的非线性和高复杂性,优化这些PI增益是一项繁琐的工作。在解决最优控制问题的各种方法中(无论是直接的还是间接的),进化算法就是其中的一种。本文采用闪电搜索算法对无功和有功并行控制进行分析,设计出最优的P-Q控制器。通过有故障和无故障配电系统对控制算法进行了测试。结果表明,该算法能有效地找到控制器的最优参数。在MATLAB和Simpower系统中进行了仿真研究。
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引用次数: 2
A CPU-GPU Cooperative Sorting Approach 一种CPU-GPU协同排序方法
Pub Date : 2019-03-01 DOI: 10.1109/i-PACT44901.2019.8960106
R. K, N. Chiplunkar, K. Rajanikanth
Sorting is a fundamental operation in computer science. Sorting is normally done in CPU. Graphics processing Units (GPU) are basically used to render graphical objects. Nowadays GPUs are also used for high-performance general-purpose computation. Due to the availability of GPUs for general purpose computation sorting can also be done on GPUs. The CPU has fewer cores, but it operates at higher frequency than GPUs. GPUs possess large number of cores and hence provide high throughput. The drawback of CPU-GPU execution model is that when the GPU is executing, the CPU remains idle. Due to this model of execution enormous computation power of CPU cores is wasted. By cooperatively utilizing both CPU and GPU for performing a task, we can reduce the computation time of a task. In this paper we perform merge sort using both CPU and GPU cooperatively. With this method we obtained a speedup of around 3 compared to the GPU-only execution.
排序是计算机科学中的一项基本操作。排序通常在CPU中完成。图形处理单元(GPU)基本上是用来渲染图形对象的。现在gpu也被用于高性能的通用计算。由于通用计算的gpu可用性,排序也可以在gpu上完成。CPU的核数更少,但运行频率比gpu高。gpu拥有大量的内核,因此提供高吞吐量。CPU-GPU执行模型的缺点是当GPU执行时,CPU处于空闲状态。由于这种执行模式,大量的CPU核心计算能力被浪费了。通过协同利用CPU和GPU来执行任务,可以减少任务的计算时间。本文采用CPU和GPU协同进行归并排序。使用这种方法,与仅使用gpu的执行相比,我们获得了大约3的加速。
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引用次数: 1
Grid connected asymmetric cascaded H-bridge with LDN topology 具有LDN拓扑结构的网格连接非对称级联h桥
Pub Date : 2019-03-01 DOI: 10.1109/i-PACT44901.2019.8960075
D. Sharma, U. Kumar, Kajal. K. Shetty, P. Kasari, A. Chakrabarti, B. Das
This paper presents an asymmetric cascaded H-bridge with Level Doubling Network topology with PV panels replacing the conventional DC sources. The voltage level has increased with floating capacitor and to maintain this no extra closed loop control has required for balancing its voltage. The Sinusoidal Pulse Width Modulation switching technique has adopted to achieve required output voltage level of the inverter. The desired output has obtained by utilizing a single DC source. The mentioned input DC source kept constant/ or regulated despite solar irradiation variations. The inverter output power has injected to the AC bus. A vector control scheme has adopted to synchronize the inverter output with grid for smother power exchange between Level Doubling Network Inverter and the grid.
本文提出了一种以光伏板代替传统直流电源的非对称级联倍电平h桥网络拓扑。电压水平随着浮动电容的增加而增加,为了保持这一点,不需要额外的闭环控制来平衡其电压。采用正弦脉宽调制开关技术实现逆变器所需的输出电压水平。通过利用单个直流电源获得所需的输出。上述输入直流电源保持恒定/或调节,尽管太阳辐照变化。逆变器输出电源已注入交流母线。采用矢量控制方案使逆变器输出与电网同步,实现倍电平网逆变器与电网之间更平稳的功率交换。
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引用次数: 1
Simulation Analysis of a Nearest Level Modulation Scheme for Cross-Connected Sources based MLI 一种基于MLI的交叉连接源最近电平调制方案的仿真分析
Pub Date : 2019-03-01 DOI: 10.1109/i-PACT44901.2019.8959520
A. R. Kumar, Partha Sarathi Subudhi, T. Deepa, S. Krithiga, Sanjeevikumar Padmanaban, D. Kothari
This paper proposes a nearest level modulation (NLM) scheme for a Cross-Connected Sources (CCS) based MLI topology. The proposed modulation scheme is found to facilitate a reduction in the total harmonic distortion (THD) at the ac output of the inverter. The modulation scheme employs low switching frequency to operate the MLI. The paper presents an explanatory description of the NLM scheme in order to help the upcoming researchers for designing efficient MLI system. Simulation has been implemented using the MATLAB/Simulink 2015b software package. The simulation results indicate a significant reduction in the voltage THD and current THD. Improvement in the other output parameters of the inverter such as rms voltage, rms current and output power is also seen.
提出了一种基于交叉连接源(CCS)的MLI拓扑的最近电平调制(NLM)方案。所提出的调制方案被发现有助于减少逆变器交流输出的总谐波失真(THD)。该调制方案采用低开关频率来操作MLI。本文给出了NLM方案的解释性描述,以帮助未来的研究人员设计高效的MLI系统。仿真使用MATLAB/Simulink 2015b软件包实现。仿真结果表明,电压THD和电流THD显著降低。逆变器的其他输出参数如有效值电压、有效值电流和输出功率也有所改善。
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引用次数: 6
IOT Based Biomedical Wireless Sensor Networks and Machine Learning Algorithms for Detection of Diseased Conditions 基于物联网的生物医学无线传感器网络和检测疾病的机器学习算法
Pub Date : 2019-03-01 DOI: 10.1109/i-PACT44901.2019.8960191
Nishant Wadhwani, Namisha Mehta, N. Ruban
With rapidly increasing population and industrialization, the facilities available to rural areas are diminishing every day. Immediate, feasible and accurate healthcare monitoring is a must, but it is often difficult to find doctors in such areas. One solution is an IoT based wireless sensor network for patient monitoring. It is a smart system, which uses real time data collected and stored in a secure database, for continuous monitoring, analyzing the physiological signals using signal processing techniques. The data collected can be correlated to predict the disorder underlying the abnormality present using LSTM recurrent neural network. The physiological signals monitored are electrocardiogram (ECG), body temperature, and blood pressure. Among the acquired physiological signals, the raw ECG data is filtered using hamming window FIR filter. A QRS detection wavelet transform algorithm is also used to make the data more reliable. This processed data along with the other two parameters, the body temperature and the blood pressure are first stored in the database, and then transmitted wirelessly to a doctor along with the location details of the patient. The paper describes a prototype patient monitoring system, through a common interface, an android application. This application will bridge the communication gap, and increase the accuracy of our smart monitoring system.
随着人口的迅速增长和工业化,农村地区可用的设施日益减少。即时、可行和准确的医疗监测是必须的,但在这些地区往往很难找到医生。一种解决方案是基于物联网的无线传感器网络,用于患者监测。它是一种智能系统,利用实时采集的数据并存储在安全的数据库中,对生理信号进行连续监测,利用信号处理技术对生理信号进行分析。利用LSTM递归神经网络,将收集到的数据进行关联,预测异常背后的紊乱。监测的生理信号是心电图(ECG)、体温和血压。在采集到的生理信号中,使用汉明窗FIR滤波器对原始心电数据进行滤波。采用QRS检测小波变换算法,使数据更加可靠。处理后的数据和另外两个参数——体温和血压——首先存储在数据库中,然后与病人的位置细节一起无线传输给医生。本文介绍了一个病人监护系统的原型,通过一个通用接口,一个android应用程序。该应用将弥补通信上的差距,提高智能监控系统的准确性。
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引用次数: 3
Realization of Novel Multi-Feeder UPQC for Power Quality Enhancement Using Proposed Hybrid Fuzzy+PI Controller 基于模糊+PI混合控制器的新型多馈线UPQC的电能质量提升
Pub Date : 2019-03-01 DOI: 10.1109/i-PACT44901.2019.8960156
S. Bhavani, L. Shanmukha Rao
At present the multi-feeder power distribution system is deteriorated with continuity of supply and poor power quality standards. In this multi-feeder distribution system, it is a regular consumer related issue which is acquired due to misfunctioning of massive non-linear load devices. These loads create the voltage/current imperfections on distribution networks which disrupts the power quality of distribution system. An efficient and reliable active compensation scheme is used for attaining enhanced power quality features at PCC of multi-feeder distribution system with effective control functions. The Multi-Feeder Unified Power Quality Compensator (MF-UPQC) is optimal choice for attaining enhanced power quality features and it is a combined operation of both shunt/series compensator driven by common DC-link. In this paper, a newly proposed MFUPQC is used to compensate all voltage-current PQ imperfections by using advanced intelligent control schemes. The performance evaluation of proposed MF-UPQC is verified by classical PI and proposed intelligent based Fuzzy and hybrid-Fuzzy control functions by using MATLAB/Simulink tool and results are conferred with comparisons.
目前多馈线配电系统存在供电连续性差、电能质量标准差等问题。在多馈线配电系统中,由于大量非线性负荷装置的故障而引起的用户相关问题是一个常见的问题。这些负荷在配电网中产生电压/电流缺陷,从而影响配电系统的电能质量。采用一种高效可靠的主动补偿方案,使多馈线配电系统的PCC具有有效的控制功能,从而提高电能质量特征。多馈线统一电能质量补偿器(MF-UPQC)是实现增强电能质量特性的最佳选择,它是由共同直流链路驱动的并联/串联补偿器的组合运行。本文提出了一种新的MFUPQC,通过采用先进的智能控制方案来补偿所有电压电流PQ缺陷。利用MATLAB/Simulink工具对所提出的MF-UPQC性能评价进行了验证,并提出了基于智能的模糊和混合模糊控制函数,并对结果进行了比较。
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引用次数: 4
期刊
2019 Innovations in Power and Advanced Computing Technologies (i-PACT)
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