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2016 IEEE 7th Power India International Conference (PIICON)最新文献

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Enhancement of ECG signal using EMD and hurst-based mode selection technique 利用EMD和基于速度的模式选择技术增强心电信号
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077388
Harsh Vardhan, Lalita Gupta
An ECG signal contains important information required for diagnosis and analysis of heart diseases. So if there is noise induced in an ECG signal then scrutinizing of that signal for pathological, anatomical and physiological aspects goes worthless. Noises can be introduced by various sources, but a common source for high frequency noise is due to forces acting on the electrodes. In this paper noise removal from ECG signal is based on empirical mode decomposition (EMD) and a set of intrinsic mode functions (IMF) is obtained. The main contribution here is adopting Hurst exponent in the selection of IMFs to reconstruct the cardiac signal. This EMD and Hurst-based (EMDH) approach is evaluated in cardiac signal enhancement experiments considering environmental noises with different indices of non-stationarity. Simulation here is done on the MIT-BIH database to evaluate proposed algorithm. Experiments show that the presented method offers good results to detect characteristic waves and remove noise from the ECG signal.
心电信号包含诊断和分析心脏病所需的重要信息。所以如果在心电信号中有噪声那么仔细检查这个信号的病理,解剖和生理方面是毫无价值的。噪声可以由各种来源引入,但高频噪声的一个常见来源是由于作用在电极上的力。本文基于经验模态分解(EMD)方法对心电信号进行去噪,得到一组本征模态函数(IMF)。本文的主要贡献是采用赫斯特指数来选择imf来重建心脏信号。在考虑不同非平稳性指标环境噪声的心脏信号增强实验中,对EMD和基于赫斯特(hurst)的方法进行了评价。在MIT-BIH数据库上进行了仿真,以评估所提出的算法。实验表明,该方法对心电信号的特征波检测和噪声去除效果良好。
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引用次数: 0
An adaptive control of voltage source converter based scheme for grid connected solar PV - battery system 基于电压源变换器的并网太阳能光伏电池系统自适应控制方案
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077468
U. Kalla, M. Mantri
This paper presents an adaptive back propagation learning scheme for three phase four wire grid integrated solar PV - battery microgrid feeding three phase and single phase nonlinear loads simultaneously. The proposed power quality improved 3 phase 4 wire solar PV - battery micogrid is capable of delivering highly non-sinusoidal currents to nonlinear and unbalance loads of different types such that single and three phase industrial and domestic loads, while the source currents in all three phases remains balanced and sinusoidal. An adaptive back propagation learning scheme is used to control the microgrid voltage control and power quality improvement under various loading conditions through mitigation of harmonic currents, reactive power compensation and active power balancing in the system. It also improve the system power factor in highly nonlinear and unbalanced loading conditions. The proposed scheme significantly improves the steady state and dynamic performances of the 3 phase 4 wire grid integrated solar PV - battery micogrid system.
提出了一种三相四线网太阳能光伏电池集成微网同时馈送三相和单相非线性负荷的自适应反向传播学习方案。提出的电能质量改进的3相4线太阳能光伏电池微电网能够向不同类型的非线性和不平衡负载(如单相和三相工业和家庭负载)提供高度非正弦电流,而所有三相的源电流保持平衡和正弦。采用自适应反向传播学习方案,通过减缓系统谐波电流、无功补偿和有功平衡来控制各种负载条件下的微电网电压控制和电能质量改善。它还提高了系统在高度非线性和不平衡负载条件下的功率因数。该方案显著改善了三相四线并网太阳能光伏电池集成微网系统的稳态和动态性能。
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引用次数: 9
Design of a variable stiffness actuator using shape memory alloy wire 形状记忆合金丝可变刚度作动器的设计
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077234
D. Nalini, D. Ruth, K. Dhanalakshmi
A linear (translational) actuator using synergistically configured shape memory alloy (SMA) actuator wires is designed to work by the principle of variable stiffness actuation. Synergistic SMA actuators use aiding force to create repetitive motion and are thereby capable of producing increased displacement when compared to the antagonistically biased SMA systems. The stiffness variant in the SMA actuator wires and, the force and displacement characteristics of the actuator are obtained experimentally. The actuator (system) model is obtained using the experimental data. Stiffness feedback is employed for control; in order to measure up the performance of the actuator with stiffness feedback, a comparison is made with displacement and force feedback. Simulations are carried out for regulation and tracking control. The control results demonstrate that, stiffness feedback enhances the performance of the (variable stiffness) actuator.
采用协同配置的形状记忆合金(SMA)致动器导线设计了一种线性(平移)致动器,其工作原理是可变刚度致动。协同SMA致动器使用辅助力来产生重复运动,因此与对抗偏置SMA系统相比,能够产生更大的位移。实验得到了SMA致动器导线的刚度变化规律,以及致动器的受力和位移特性。利用实验数据得到了作动器(系统)模型。采用刚度反馈控制;为了衡量具有刚度反馈的执行机构的性能,将其与位移反馈和力反馈进行了比较。对调节和跟踪控制进行了仿真。控制结果表明,刚度反馈提高了变刚度作动器的性能。
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引用次数: 8
Influence of distributed generation penetration level on performance indices of unbalance radial feeder 分布式发电渗透水平对不平衡径向馈电器性能指标的影响
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077156
J. P. Sharma, H. Kamath, Asheesh Shah
A stochastic performance analysis is a useful tool for an unbalance distribution feeder having voltage deepened load characteristics under deregulated environment. As the planning, smooth operation, and distributed generation (DG) integration aspects of an unbalance distribution feeder affected by the DG penetration level and may have a favorable or adverse impact on feeder performance. Therefore a cautious analysis to assess the impact on feeder performance with a reasonable penetration level of DG is required. The proposed strategy has been implemented on a modified IEEE 37 feeder having stochastic static ZIP load models. A constant power (PQ) model of distributed generation integrated with above feeder to simulate penetration of DGs with three different scenarios for 24 hours. These scenarios have different penetration level and DG locations with diverse DG capacity frameworks. The outcome has demonstrated the adequacy of the DG penetration levels under time varying scenarios.
随机性能分析是解调环境下具有电压加深负荷特性的不平衡配电馈线的有效工具。由于不平衡配电馈线的规划、平稳运行和分布式发电(DG)集成等方面受DG渗透水平的影响,可能对馈线性能产生有利或不利的影响。因此,需要谨慎分析,评估合理的DG渗透水平对馈线性能的影响。该策略已在具有随机静态ZIP负载模型的改进ieee37馈线上实现。结合上述馈线的分布式发电恒功率(PQ)模型,模拟了三种不同场景下dg的24小时侵穿。这些场景有不同的渗透水平和DG位置,DG容量框架也不同。研究结果显示,在时间变化的情况下,DG渗透水平是足够的。
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引用次数: 2
Public delegation & verifiability of matrix multiplication to a malicious cloud server 向恶意云服务器公开委派和验证矩阵乘法
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077371
Malay Kumar, Jasraj Meena, M. Vardhan, Sanjeev Jain
The rapid development of cloud computing services and expansion of mobile computing devices have made computation outsourcing a promising solution for execution of extensive computation. In this framework, a computationally weak client outsources its large computation load to a cloud server. However, outsourcing of data and computation to a cloud server brings many security and privacy concern. In this paper, we are addressing matrix multiplication (MM) problem, because MM is a computation-intensive problem and useful in many domains. In the proposed MM outsourcing algorithm, the client outsources input dataset to the cloud server without revealing to them both the input dataset and the output. The algorithm is a non-interactive solution to the client, it sends only input and receives output along with the proof of verification from the cloud server. Further, this work extends the definition of verifiable computation to public verifiable computation, which allows participating worker (not only the client) to verify the correctness of the result computed on the cloud server. The analytical analysis shows that the algorithm is successfully meeting the challenges of correctness, security, verifiability, and efficiency. The practical evaluation validates the proposed algorithm. The result analysis shows that the algorithm is highly efficient and endorses the practical usability of the algorithm.
云计算服务的快速发展和移动计算设备的扩展使得计算外包成为执行大量计算的有前途的解决方案。在这个框架中,计算能力较弱的客户端将其大量计算负载外包给云服务器。然而,将数据和计算外包给云服务器带来了许多安全和隐私问题。在本文中,我们讨论矩阵乘法问题,因为矩阵乘法是一个计算密集型问题,在许多领域都很有用。在本文提出的MM外包算法中,客户端将输入数据集外包给云服务器,而不向云服务器透露输入数据集和输出数据。该算法对客户端是一个非交互式的解决方案,它只发送输入并接收输出以及来自云服务器的验证证明。此外,这项工作将可验证计算的定义扩展到公共可验证计算,这允许参与的工作人员(不仅是客户端)验证云服务器上计算结果的正确性。分析表明,该算法成功地满足了正确性、安全性、可验证性和效率方面的挑战。实际评价验证了该算法的有效性。结果分析表明,该算法是高效的,证明了该算法的实用性。
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引用次数: 0
Deregulation of transmission pricing:MW-Mile method 解除输电定价管制:兆瓦英里法
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077206
N. Garg, D. K. Palwalia
Deregulation of the power system industries has recently increased tremendously throughout the globe. This has curved great attention of power system researchers in finding new pilgrims in the competitive market. This paper presents a case study of 5 and 30 Bus system using MW-Mile method. Three approaches reverse, absolute and dominant have been applied to the cost estimation of transmission wheeling. Wheeling charges is one of the decisive aspects of open access electricity market The obtained results show the convergence and being practiced in the markets.
最近,在全球范围内,对电力系统工业放松管制的情况急剧增加。这引起了电力系统研究人员在竞争激烈的市场中寻找新朝圣者的极大关注。本文以5总线和30总线系统为例,采用MW-Mile法进行了分析。将逆向、绝对和优势三种方法应用于传动轮毂的成本估算。轮转收费是开放接入电力市场的决定性因素之一,所得结果表明,市场上的轮转收费是趋同的,并正在实践中。
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引用次数: 4
Comparative analysis of linearization and point estimate methods for solving probabilistic load flow 求解概率潮流的线性化与点估计方法的比较分析
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077242
Abhishek Kumar, S. K. Parida, S. Sourab
This paper describes a probabilistic approach based on a linearization of basic load flow equations. The method computes expected values (mean) and standard deviation of the voltages, angles, injected active and reactive powers and thereby obtain their respective probability density curves. Another method named, Point estimate method utilizes mean, standard deviation and probability of above method to obtain more precise probability density curves. Finally, probability density curves obtained from both methods are compared and results are concluded.
本文描述了一种基于基本负荷流方程线性化的概率方法。该方法计算电压、角度、注入有功功率和无功功率的期望值(平均值)和标准差,从而得到它们各自的概率密度曲线。另一种方法是点估计法,利用上述方法的均值、标准差和概率,得到更精确的概率密度曲线。最后对两种方法得到的概率密度曲线进行了比较,并对结果进行了总结。
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引用次数: 0
Composite observer based control technique for single-phase solar PV-Grid tied system 基于复合观测器的单相光伏并网系统控制技术
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077313
R. Agarwal, Ikhlaq Hussain, Bhim Singh
In this paper, a composite observer based control technique is proposed for a single-stage single-phase solar photovoltaic (PV) grid tied system. The system aims at integrating solar PV power generating station to single-phase distribution grid for supplying active power to linear or nonlinear loads connected at the point of interconnection (PoI). The main contribution of this paper is the use of composite observer driven control technique for a single-stage PV-grid tied system which improves the power quality on the grid side by providing harmonics alleviation, reactive power compensation and power factor correction. For maximum power point tracking, an incremental conductance based approach is implemented to increase the efficacy of the solar PV system. Simulation is done using MATLAB software and experimental tests are carried out on a laboratory prototype for studying the behaviour of the system under varying nonlinear loading and solar insolation conditions.
针对单级单相太阳能光伏并网系统,提出了一种基于复合观测器的控制方法。该系统旨在将太阳能光伏电站接入单相配电网,为并网点(PoI)的线性或非线性负荷提供有功电力。本文的主要贡献是将复合观测器驱动控制技术应用于单级光伏并网系统,通过提供谐波缓解、无功补偿和功率因数校正,改善了电网侧的电能质量。对于最大功率点跟踪,采用基于增量电导的方法来提高太阳能光伏系统的效率。利用MATLAB软件进行了仿真,并在实验室样机上进行了实验测试,研究了系统在不同非线性载荷和日照条件下的性能。
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引用次数: 1
Voltage stability monitoring by different ANN architectures using PCA based feature selection 基于PCA特征选择的不同ANN结构的电压稳定监测
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077157
Harita Shah, K. Verma
Voltage Stability is a challenging issue for secure and reliable operation of modern power systems. In this paper, a fast and efficient Artificial Neural Network (ANN) based approach with dimensionality reduction is proposed for online voltage stability monitoring of power systems. The dimension of the system data is reduced by selecting suitable training features for ANN using Principal Component Analysis (PCA). The performance comparison with different types of ANN architectures is also carried out for the proposed approach. Various voltage stability indices are used as indicator for voltage stability monitoring under varying operating conditions including N-1 contingency. The effectiveness of the proposed approach is demonstrated on IEEE 39 bus New England test system.
电压稳定是现代电力系统安全可靠运行的一个具有挑战性的问题。本文提出了一种基于人工神经网络的降维在线电压稳定监测方法。利用主成分分析(PCA)选择合适的训练特征来降低系统数据的维数。并将该方法与不同类型的人工神经网络结构进行了性能比较。采用各种电压稳定指标作为N-1等工况下电压稳定监测的指标。在ieee39总线新英格兰测试系统上验证了该方法的有效性。
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引用次数: 4
A novel MPPT-based synchronous buck converter for solar power system in fishing trawler 拖网渔船太阳能发电系统中一种新型mpt同步降压变换器
Pub Date : 2016-11-01 DOI: 10.1109/POWERI.2016.8077296
Sajib Chakraborty, Mohammed Mahedi Hasan, Saurav Das, M. Razzak
In Bangladesh, approximately 3900 square miles of entire length is surrounded by 700 rivers including tributaries. Around 770,000 inland and 510,000 marine fishermen survive in this country, whose income entirely depends on fisheries. Bangladeshi fishermen mainly use trawler for fishing purpose in sea and river. Those trawler boats require electric power at night for fishing and lighting purposes. Currently, in a trawler, electric power is supplied by a battery which is charged through a dynamo synchronized with trawler engine. These dynamos require diesel to serve electric power. In this paper, a novel MPPT-based solar power system for fishing trawler is discussed to reduce fuel consumption. This paper defines a method of extracting the maximum current from the PV cell to quickly charge a lead acid cell battery during its “bulk” or constant current charging phase. A PID controller is implemented to ensure that the DC-DC buck converter maintains a constant current output regardless of the charge level of the battery as long as it is in the bulk charging stage. The simulation and hardware results show that the algorithm has been optimized for commercially available 24V PV cells.
在孟加拉国,大约3900平方英里的土地被包括支流在内的700条河流环绕。这个国家大约有77万名内陆渔民和51万名海洋渔民,他们的收入完全依赖渔业。孟加拉国渔民主要使用拖网渔船在海上和河中捕鱼。这些拖网渔船在夜间捕鱼和照明时需要电力。目前,在拖网渔船上,电力是由电池提供的,电池通过与拖网渔船发动机同步的发电机充电。这些发电机需要柴油来提供电力。为了降低拖网渔船的燃料消耗,本文研究了一种新型的基于mppt的拖网渔船太阳能发电系统。本文定义了一种从光伏电池中提取最大电流的方法,以便在铅酸电池的“批量”或恒流充电阶段快速充电。实现了PID控制器,以确保DC-DC降压变换器只要处于批量充电阶段,无论电池的充电水平如何,都保持恒定的电流输出。仿真和硬件结果表明,该算法已针对市售的24V光伏电池进行了优化。
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引用次数: 5
期刊
2016 IEEE 7th Power India International Conference (PIICON)
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