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2020 IEEE Canadian Conference on Electrical and Computer Engineering (CCECE)最新文献

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Site Selection Criteria for Battery Energy Storage in Power Systems 电力系统中蓄电池储能选址标准
Pub Date : 2020-08-30 DOI: 10.1109/CCECE47787.2020.9255678
Zeenat Hameed, S. Hashemi, C. Træholt
Battery energy storage systems (BESSs) have gained potential recognition for the grid services they can offer to power systems. Choosing an appropriate BESS location plays a key role in maximizing benefits from those services. This paper aims at analyzing the significance of site selection for placement of BESS in a power grid by providing a techno-economic evaluation with respect to specific grid services it can deliver, and benefits that can be extracted from those services in the form of revenue streams. The focus of the previous studies extended in this direction has been limited to the optimization techniques and software tools being used for BESS siting. However, questions around the benefits that stakeholders can derive from BESSs located at different levels of power network still remain unanswered. This paper handles those questions by drawing a link between technical considerations essential for BESS placement and their economic evaluations.
电池储能系统(bess)已经获得了潜在的认可,因为它们可以为电力系统提供电网服务。选择合适的BESS位置在最大限度地利用这些服务方面起着关键作用。本文旨在通过对BESS可以提供的特定电网服务进行技术经济评估,以及可以从这些服务中以收入流的形式提取的利益,分析BESS在电网中选址的重要性。以前在这个方向上扩展的研究的重点仅限于用于BESS选址的优化技术和软件工具。然而,关于利益相关者可以从位于不同级别电网的bess中获得的好处的问题仍然没有答案。本文通过在BESS安置及其经济评估之间的技术考虑之间建立联系来处理这些问题。
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引用次数: 5
Combined Latency-Aware and Resource-Effective Virtual Network Function Placement 结合延迟感知和资源有效的虚拟网络功能布局
Pub Date : 2020-08-30 DOI: 10.1109/CCECE47787.2020.9255792
Wissal Attaoui, Essaid Sabir, H. Elbiaze, M. Sadik
With the emergence of network function virtualization (NFV) and Software-Defined Networking (SDN) technologies, virtual network functions (VNF) can be interconnected to deliver different mobile services in 5G communication networks. Our primary purpose is to find the optimal VNF placement reducing resource consumption while providing specific latency and throughput for slicing services. We consider VNFs as M/M/1/C queues chained together to serve customer requests. The problem relies on finding an efficient orchestration and placement of VNFs. In this context, we propose a decision algorithm based two-procedures, the first one, named orchestration phase, aims to manage the reuse of VNFs having the same required functions through a dynamic logit method, and the second one is related to the new placement of VNFs. In this paper, we focus on a simple scenario of delivering video streaming service traversing a standard chain of four VNFs. Simulation results prove the performance of our proposed algorithm in terms of End-to-End delay and dropping probability compared to greedy and affinity algorithms.
随着网络功能虚拟化(NFV)和软件定义网络(SDN)技术的出现,在5G通信网络中,虚拟网络功能(VNF)可以互联互通,提供不同的移动业务。我们的主要目的是找到最佳的VNF位置,减少资源消耗,同时为切片服务提供特定的延迟和吞吐量。我们将VNFs视为链接在一起的M/M/1/C队列来服务客户请求。这个问题依赖于找到VNFs的有效编排和放置。在此背景下,我们提出了一种基于两个过程的决策算法,第一个过程称为编排阶段,旨在通过动态logit方法管理具有相同所需功能的vnf的重用,第二个过程与vnf的新位置有关。在本文中,我们专注于一个简单的场景,即通过四个VNFs的标准链提供视频流服务。仿真结果证明了该算法在端到端延迟和丢弃概率方面的性能优于贪婪算法和亲和算法。
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引用次数: 5
Content Delivery Networks - Q-Learning Approach for Optimization of the Network Cost and the Cache Hit Ratio 内容分发网络——网络成本和缓存命中率优化的q -学习方法
Pub Date : 2020-08-30 DOI: 10.1109/CCECE47787.2020.9255813
Diego Felix de Almeida, Jason Yen, Michal Aibin
With an increasing demand for web content delivery, it is necessary to optimize the CAPEX and OPEX costs of the Content Delivery Networks. Ideally, all web content to be requested should be stored in local cache nodes at all times. However, the content demand varies across space and time. In this paper, we propose a Content Delivery Network model that allows us to choose the best trade-off between costs and cache hit ratio.
随着网络内容交付需求的增加,有必要优化内容交付网络的资本支出和运营成本。理想情况下,所有被请求的web内容应该始终存储在本地缓存节点中。然而,内容需求因时空而异。在本文中,我们提出了一个内容交付网络模型,该模型允许我们在成本和缓存命中率之间做出最佳权衡。
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引用次数: 2
M-Model: A New Precise Medium-Length Transmission Line Model m-模型:一种新的精确中长度传输线模型
Pub Date : 2020-08-30 DOI: 10.1109/CCECE47787.2020.9255807
Ali R. Al-Roomi, M. El-Hawary
Real transmission lines are translated into mathematical models using either the lumped parameter approach or the distributed parameter approach. The first one is used for short- and medium-length transmission lines, while the other is used for long-length transmission lines where the accuracy and precision are required. For medium transmission lines, the lumped parameter approach can be applied using one of four popular circuit representations known as gamma ($Gamma$), opposite-gamma ┐, tee (T), and pi $Pi$. This study presents a new circuit representation called em (M). This model is inspired by the sagging phenomenon where, at the sag point, the distributed series impedance of the $Pi$-model is divided into two equal/unequal parts and the distributed shunt admittance at the center is bigger than that at both ends. For some numerical experiments, the M-model shows a stunning performance in estimating transmission line readings. It wins in most cases and, for the few remaining cases, the M-model shows very competitive results.
采用集总参数法或分布参数法将实际输电线路转换成数学模型。第一种用于中短长度输电线路,另一种用于对精度和精度有要求的长长度输电线路。对于中等传输线,集总参数方法可以使用四种流行的电路表示形式之一,即gamma ($Gamma$),对向gamma -, tee (T)和pi $Pi$。本文提出了一种新的电路表示em (M),该模型的灵感来自于凹陷现象,在凹陷点处,$Pi$ -模型的分布串联阻抗分为两个相等/不相等的部分,中心的分布并联导纳大于两端。在一些数值实验中,m模型在估计传输线读数方面表现出惊人的性能。它在大多数情况下获胜,而在剩下的少数情况下,m模型显示出非常有竞争力的结果。
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引用次数: 2
A Low-Power 25GS/Sec Sample and Hold Circuit with Active-Load Inductors 具有有源负载电感的低功耗25GS/Sec采样保持电路
Pub Date : 2020-08-30 DOI: 10.1109/CCECE47787.2020.9255728
Abdullah Hasan, K. Abugharbieh, Muntaser Al-Mousely, Waseem Al-Akel
This work presents a novel design of a sample and hold circuit which operates at 25GS/s. The circuit consists of three main stages. The first stage is the input buffer which provides a high frequency boost using an active-load inductor instead of the commonly used passive inductor. The second stage is the switch stage which is responsible for sampling the input signal with high linearity. Finally, the output buffer is used to recover the high frequency component of the signal. The circuit is designed in 28nm CMOS technology used in digital circuits and uses a 1V supply. It is simulated using a 3GHz input signal that has a differential peak to peak voltage amplitude of 0.4V and a 25GHz sampling clock signal. The proposed circuit consumes a total power of 2.47mW and occupies an area of 0.005mm2. The achieved Effective Number Of Bits (ENOB) is 5 bits and the Total Harmonic Distortion, THD, is −40dB. The sampled signal has a droop rate of 0.35mV/psec.
本文提出了一种工作速度为25GS/s的采样保持电路的新设计。电路由三个主要阶段组成。第一级是输入缓冲器,它使用有源负载电感器代替常用的无源电感器提供高频升压。第二级是开关级,负责对输入信号进行高线性度采样。最后,利用输出缓冲器恢复信号的高频分量。该电路采用数字电路中使用的28纳米CMOS技术设计,并使用1V电源。采用3GHz的输入信号和25GHz的采样时钟信号进行仿真,该信号的峰值电压差幅为0.4V。该电路的总功耗为2.47mW,占地面积为0.005mm2。实现的有效比特数(ENOB)为5位,总谐波失真(THD)为- 40dB。采样信号的下降率为0.35mV/psec。
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引用次数: 0
Effect of Varying Threshold Voltage on Efficiency of CMOS Rectifiers for Piezoelectric Energy Harvesting Applications 阈值电压变化对压电能量收集用CMOS整流器效率的影响
Pub Date : 2020-08-30 DOI: 10.1109/CCECE47787.2020.9255679
Xingwen Li, E. Rogers, Seyedfakhreddin Nabavi, Lihong Zhang
In this paper, the efficiency of a conventional cross-coupled gate CMOS bridge rectifier used in MEMS (microelectromechanical system) piezoelectric energy harvesters is investigated. The MOSFET threshold voltage is varied between 10 mV and 800 mV to evaluate the performance of the circuit for various threshold voltage levels. The circuit is simulated using the 130 nm CMOS technology process for each MOSFET to generate performance metrics for the rectifier. The results are evaluated for optimal load resistance, and it is confirmed that a lower threshold voltage results in significant improvements to the efficiency of the rectifier at lower input voltage amplitudes, with up to 62% at 0.5 V input amplitude when a smoothing capacitor is placed across the load.
本文研究了用于MEMS(微机电系统)压电能量采集器的传统交叉耦合栅CMOS桥式整流器的效率。MOSFET的阈值电压在10 mV和800 mV之间变化,以评估电路在不同阈值电压水平下的性能。对每个MOSFET使用130 nm CMOS技术工艺对电路进行模拟,以生成整流器的性能指标。结果评估了最佳负载电阻,并证实较低的阈值电压导致整流器在较低输入电压幅值下的效率显著提高,当在负载上放置平滑电容器时,在0.5 V输入幅值下效率可达62%。
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引用次数: 1
Learning-Based Reconfigurable Cache for Heterogeneous Chip Multiprocessors 基于学习的异构芯片多处理器可重构缓存
Pub Date : 2020-08-30 DOI: 10.1109/CCECE47787.2020.9255748
Furat Al-Obaidy, A. Asad, F. Mohammadi
In this work, a new energy-efficient reconfigurable cache architecture for chip multiprocessors is proposed. We formulate the reconfiguration problem based on using a machine learning technique. The proposed approach predicts the latency of the last-level cache in the next interval and then detects the type of it at runtime. This work provides a new approach that uses a neural network algorithm to reconfigure cache components. Experimental results show that the proposed design improves energy consumption of a three-dimensional chip multiprocessor with 16 cores by about 45% and performance by about 13% in compared to non-reconfigurable baselines.
本文提出了一种高效节能的芯片多处理器可重构缓存结构。我们在使用机器学习技术的基础上提出了重构问题。该方法预测下一个时间间隔内最后一级缓存的延迟,然后在运行时检测其类型。这项工作提供了一种使用神经网络算法重新配置缓存组件的新方法。实验结果表明,与不可重构基准相比,该设计可将16核三维芯片多处理器的能耗提高约45%,性能提高约13%。
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引用次数: 0
Placement with Sequence-Pair-Driven TCG for Advanced Analog Constraints 序列对驱动TCG的高级模拟约束布局
Pub Date : 2020-08-30 DOI: 10.1109/CCECE47787.2020.9255695
Lian He, Zhenxin Zhao, Y. Chen, Lihong Zhang
Although demand for analog integrated circuits (ICs) keeps increasing in a broad range of emerging IoT applications along with technology advancement, analog layout automation still largely lags behind the modern digital counterpart due to high complexity in analog design. In this paper, we propose a sequence-pair (SP) driven transitive-closure-graph (TCG) method to effectively and efficiently deal with analog placement, which is an indispensable stage in the analog IC layout design. Besides discussing the promising advantages of the proposed method in handling advanced analog constraints, this paper is mainly focused on the algorithmic complexity reduction while satisfying symmetry constraints. Our theoretical analysis and experimental results demonstrate the efficacy of the proposed method.
尽管随着技术的进步,在广泛的新兴物联网应用中,对模拟集成电路(ic)的需求不断增加,但由于模拟设计的高度复杂性,模拟布局自动化仍然在很大程度上落后于现代数字对象物。本文提出了一种序列对(SP)驱动的传递闭图(TCG)方法来有效地处理模拟电路布局设计中不可缺少的一个阶段——模拟电路布局。除了讨论该方法在处理高级模拟约束方面的优势外,本文还重点讨论了在满足对称约束的情况下降低算法复杂度的问题。理论分析和实验结果证明了该方法的有效性。
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引用次数: 0
Elements of Networked Protection Systems for Distribution Networks and Microgrids: A Cyber-Security Perspective 配电网和微电网网络保护系统的要素:网络安全视角
Pub Date : 2020-08-30 DOI: 10.1109/CCECE47787.2020.9255755
Y. Seyedi, H. Karimi, S. Grijalva, B. Sansò
Networked protection systems use information, communication and computation technologies to collect and process sensor data from spatially distributed sensors, and launch protective and control actions by sending commands to local devices. Such protection systems are also capable of supporting specialized tasks including asset control and backup protection in case of traditional relaying failures. This paper explains the structure and the fundamental elements of the networked protection systems in distribution systems and microgrids. The overall system is divided into three subsystems which are interconnected by communication systems. Different types of cyber-attacks on the subsystems and their impacts are discussed from the vantage point of protection. False and delayed tripping, non-detection, cascading failures, and unstable operation of distributed energy resources (DERs) are discussed as the critical issues that can be related to cyber-attacks.
网络保护系统利用信息、通信和计算技术,从空间分布的传感器收集和处理传感器数据,并通过向本地设备发送命令来发起保护和控制行动。这种保护系统还能够在传统继电故障的情况下支持特殊任务,包括资产控制和备份保护。本文介绍了配电网和微电网中网络化保护系统的结构和基本组成。整个系统分为三个子系统,通过通信系统相互连接。从防护的角度讨论了不同类型的网络攻击对子系统的影响。错误和延迟跳闸、未检测、级联故障和分布式能源(DERs)的不稳定运行是可能与网络攻击相关的关键问题。
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引用次数: 1
Smart Home Networks: Security Perspective and ML-based DDoS Detection 智能家庭网络:安全视角和基于ml的DDoS检测
Pub Date : 2020-08-30 DOI: 10.1109/CCECE47787.2020.9255756
Yaser Al Mtawa, Harsimranjit Singh, A. Haque, A. Refaey
Internet of Things (IoT) allows households to have real-time access to various services such as IP cameras for monitoring home security, automatic climate controls, doors and window access for family members including pets, mood-based home lighting, or automatic refrigerators that tell what item is going to expire at what time, etc. However, IoT has often been considered a single-domain facility that provides services to consumers, but security and privacy issues pertaining to households and residential infrastructure have not been studied thoroughly. The security of IoT -based systems requires a critical engineering infrastructure when dealing with home security. Any proposed home security framework should establish an automatic access monitoring and regular updates of the system software and firmware according to the ongoing threats. In this paper, we provide an insightful short review of security issues in smart home systems. We highlight several popular IoT protocols and provide critical analysis of their performance against various security threats. Mitigation strategies are also presented to reduce the impact of cyberattacks on smart home systems. Furthermore, our analysis shows that DDoS is one of the most common threats to smart home systems. Therefore, we developed an ML-based model to detect DDoS attacks. We employed unique characteristics of IoT traffic to engineer features that enable ML algorithms to accurately classify DDoS traffic from normal/benign traffic.
物联网(IoT)使家庭能够实时访问各种服务,例如监控家庭安全的IP摄像头、自动气候控制、家庭成员(包括宠物)的门窗访问、基于情绪的家庭照明、自动冰箱等。然而,物联网通常被认为是向消费者提供服务的单一领域设施,但与家庭和住宅基础设施有关的安全和隐私问题尚未得到彻底研究。在处理家庭安全时,基于物联网的系统的安全性需要关键的工程基础设施。任何拟议的家庭安全框架都应根据持续存在的威胁建立自动访问监控和定期更新系统软件和固件。在本文中,我们对智能家居系统中的安全问题进行了有见地的简短回顾。我们重点介绍了几种流行的物联网协议,并对其针对各种安全威胁的性能进行了关键分析。还提出了缓解策略,以减少网络攻击对智能家居系统的影响。此外,我们的分析表明,DDoS是智能家居系统最常见的威胁之一。因此,我们开发了一个基于ml的模型来检测DDoS攻击。我们利用物联网流量的独特特征来设计功能,使机器学习算法能够准确地将DDoS流量从正常/良性流量中分类。
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引用次数: 8
期刊
2020 IEEE Canadian Conference on Electrical and Computer Engineering (CCECE)
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