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2020 3rd International Conference on Energy, Power and Environment: Towards Clean Energy Technologies最新文献

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Sustainable building design based on glazing and location: A statistical modelling approach 基于玻璃和位置的可持续建筑设计:一种统计建模方法
Veena Mathew, C. P. Kurian, A. Babu
Energy consumption plays a substantial role in the design of a sustainable green building. This paper presents the energy simulations carried out for a test room with five different climates. This paper aims to study climate/location, glazing and window orientation on energy performance (Energy Use Intensity) on the building. The EUI data is further used to develop a theoretical model for the test building's annual energy consumption. Multiple linear and stepwise regression models were derived. The analysis shows that the EUI varies from 290 KW/m2/year in Kuala Lumpur to 330 KW/m2/year in Jodhpur. In all the climates double and triple glazing found to be with best energy performance. As the shading coefficient of the glazing decreases, EUI reduces. Also, among the various glazing parameters in regression models, the glazing's thermal gain has a higher impact on EUI. The estimated model can use for deriving the annual energy consumption of the test room for any location, window orientation and glazing. This analysis helps the architects/engineers to grab a better choice for glazing in different climatic regions.
能源消耗在可持续绿色建筑的设计中起着重要的作用。本文介绍了在五种不同气候条件下对试验室进行的能量模拟。本文旨在研究气候/位置、玻璃和窗户朝向对建筑能源性能(能源使用强度)的影响。EUI数据进一步用于开发测试建筑年能耗的理论模型。建立了多元线性和逐步回归模型。分析表明,EUI从吉隆坡的290千瓦/平方米/年到焦特布尔的330千瓦/平方米/年不等。在所有的气候条件下,双层和三层玻璃被发现具有最佳的能源性能。随着玻璃遮阳系数的减小,EUI减小。此外,在回归模型的各个玻璃参数中,玻璃的热增益对EUI的影响较大。该估算模型可用于计算任意位置、任意窗户朝向和任意玻璃安装情况下试验室的年能耗。这一分析有助于建筑师/工程师在不同气候区域更好地选择玻璃。
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引用次数: 1
Windings of a Power Transformer, Its Frequency Response and FEM Analysis 电力变压器绕组的频率响应及有限元分析
Sibabrata Pradhan, S. K. Nayak
This paper presents various types of windings in a power transformer, their FEM methods, frequency response analysis etc. Frequency response analysis (FRA) standards are used in all places. In frequency response, one reference spectrum is first done and after fault is done, spectrum is compared with reference one. A 3-D model of a transformer is considered to show the field distribution, inductance and capacitance matrices, force analysis etc. The forces developed in a transformer winding has also been explained and transient case has been studied.
本文介绍了电力变压器中各种类型的绕组及其有限元方法、频响分析等。频率响应分析(FRA)标准在所有地方都得到了应用。在频率响应中,首先绘制一个参考谱,在绘制故障后与参考谱进行比较。建立了变压器的三维模型,以显示磁场分布、电感和电容矩阵、受力分析等。还解释了变压器绕组中产生的力,并研究了暂态情况。
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引用次数: 0
Design of ANFIS Controller for a DC Microgrid 直流微电网的ANFIS控制器设计
Don Gamage, Xibeng Zhang, A. Ukil, Chathura Wanigasekara, A. Swain
An adaptive neuro-fuzzy inference system (ANFIS) controller is developed and presented in this study to control hybrid energy storage system (HESS) which combines the battery and super-capacitor (SC). The battery compensates the energy requirement for a longer duration while the SC limits the stress on battery caused by the power fluctuations during transient period which alternately gives longer life span for the battery while regulate the DC link voltage constant. The proposed ANFIS controller is being compared for performance with various other controllers including the reinforcement controller based on Q-learning proportional and integral (PI) controller, fuzzy controller and conventional PI controller. Further, the state of charge (SOC) of the battery and SC are monitored in order to decide the required optimal amount of power or energy for the HESS in deficit/excess modes. The results of the simulation, in different loading conditions, indicate that the ANFIS's controller performance for the DC microgrid is superior compared to others.
针对电池与超级电容器相结合的混合储能系统,提出了一种自适应神经模糊推理系统(ANFIS)控制器。电池补偿较长时间的能量需求,而SC则限制了暂态期间功率波动对电池造成的压力,交替地延长了电池的寿命,同时调节了直流链路电压常数。将所提出的ANFIS控制器与其他各种控制器的性能进行了比较,包括基于q -学习比例与积分(PI)控制器的强化控制器、模糊控制器和传统PI控制器。此外,监测电池和SC的充电状态(SOC),以确定HESS在亏缺/过剩模式下所需的最佳功率或能量。仿真结果表明,在不同负载条件下,ANFIS对直流微电网的控制性能优于其他控制器。
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引用次数: 2
Control of DC Microgrid for Improved Current Sharing and Voltage Regulation 改进直流微电网共流和电压调节的控制
Rohit Kumar, M. Pathak
This paper presents a distributed secondary controller in DC microgrid to improve the distribution of converters' output current and minimize load voltage regulation. The main theory adopted in the proposed controller is the variable droop resistance, which changes with change in line resistances, inequality in the converters' output currents, and output voltages. The voltage error obtained through the secondary controller participates in determining variable droop resistance and modifies the reference for DC output voltage after compensating voltage drop across droop resistance The converters used in this system are isolated full-bridge DC-DC converter, which allows the proposed controller's adaptability in both isolated and non-isolated converters.
本文提出了一种用于直流微电网的分布式二次控制器,以改善变流器输出电流的分布,减少负载电压的调整。所提出的控制器采用的主要理论是可变下垂电阻,它随着线路电阻的变化、变换器输出电流的不均匀以及输出电压的变化而变化。通过二次控制器获得的电压误差参与确定可变的下垂电阻,并在补偿跨下垂电阻的电压降后修改直流输出电压的参考值。本系统中使用的变换器为隔离式全桥DC-DC变换器,这使得所提出的控制器在隔离和非隔离变换器中都具有自适应性。
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引用次数: 3
Seamless Operation of Master-Slave Organized AC Microgrid with Robust Control and Islanding Detection 基于鲁棒控制和孤岛检测的主从组织交流微电网无缝运行
Parusharamulu Buduma, Madan Kumar Das, R. T. Naayagi, S. Mishra, G. Panda
In this paper, islanding detection, control, power share, and grid synchronization techniques have been proposed for the seamless operation of AC Microgrid in Grid-Connected Mode (GCM), Islanded Mode (IM), and during the transition between both modes. The power share between Microgrid sources is implemented with a Master-Slave method. The control scheme of each source is designed with Robust Linear Quadratic Regulator (RLQR) and Mixed $H_{2}/H_{infty}$ Optimal (MO) controller. The detection algorithm is developed with Synchro-Extraction Transform (SET) and Optimal Support Vector Machine (OSVM). A Phase-Locked Loop (PLL) based grid synchronization method is also considered for the re-connecting of the Microgrid to the utility grid. To verify the practical feasibility, an experimental setup along dSPACE 1202 control kit is developed. For demonstrating the seamless operation of the proposed system, simulation and experimental results are presented.
为实现交流微电网在并网模式(GCM)、孤岛模式(IM)以及两种模式之间的转换过程中的无缝运行,本文提出了孤岛检测、控制、电力共享和电网同步技术。微电网源间的电力共享采用主从方式实现。每个源的控制方案采用鲁棒线性二次型调节器(RLQR)和混合$H_{2}/H_{infty}$最优控制器(MO)设计。采用同步提取变换(SET)和最优支持向量机(OSVM)开发了检测算法。同时,还考虑了一种基于锁相环(PLL)的电网同步方法来实现微电网与公用电网的重新连接。为了验证其实际可行性,利用dSPACE 1202控制套件开发了实验装置。为了证明系统的无缝运行,给出了仿真和实验结果。
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引用次数: 2
Dynamic State Estimation of Multi-machine Power Network Integrated with SVC 基于SVC的多机电网动态估计
Meera R. Karamta, Anilkumar Markana
This work describes the estimation of system states for WSCC 3-Generator 9-Bus system connected with SVC (shunt FACTS device). Bus voltage magnitudes and voltage phase angles of this test system are estimated using Weighted Least Square (WLS) and Extended Kalman Filter (EKF) methods of dynamic state estimation. Holt's two-parameter linear exponential smoothing method is utilised for model parameter identification required in EKF implementation. Performance of both estimation methods are compared under two disturbance conditions, vis-à-vis sudden load change and three-phase fault.
本文描述了与SVC(并联FACTS装置)连接的WSCC 3-Generator 9-Bus系统的状态估计。采用加权最小二乘(WLS)和扩展卡尔曼滤波(EKF)两种动态估计方法对测试系统的母线电压幅值和电压相角进行了估计。采用Holt的双参数线性指数平滑法进行EKF实现所需的模型参数辨识。比较了两种估计方法在负载突然变化和三相故障两种干扰条件下的性能。
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引用次数: 0
Total Harmonic Distortion based Fault Detection in Islanded DC Microgrid 基于总谐波畸变的孤岛直流微电网故障检测
S. K. Prince, Shaik Affijulla, G. Panda
DC microgrid is a part of the grid that includes distributed energy resources (DERs), storage equipment, and local loads. In a DC microgrid, protection, and fault analysis is a challenging task, with a rapid increase of current during a fault. Faults can occur in the grid-connected and island modes of the DC microgrid, while in island mode the fault current is reduced by 2–3 times. Thus, in this paper fault detection techniques are developed based on the total harmonic distortion of the voltage and current samples in island mode. For the validation of the proposed method, a pole-ground fault is performed in the six-lines of the DC microgrid, and then the total harmonic distortion for the individual line is assessed. This 6-bus DC microgrid is simulated in PSS®SINCAL software, and the total harmonic distortion is analyzed in Matlab/Simulink. Finally, the effectiveness of the system has been investigated under pole-ground fault in three different line-segments.
直流微电网是包括分布式能源、存储设备和本地负载在内的电网的一部分。在直流微电网中,随着故障发生时电流的迅速增大,保护和故障分析是一项具有挑战性的任务。直流微电网并网和孤岛模式均可发生故障,孤岛模式故障电流减小2-3倍。因此,本文提出了基于孤岛模式下电压和电流样本的总谐波畸变的故障检测技术。为了验证该方法的有效性,在直流微电网的6条线路中进行了极地故障分析,并对每条线路的总谐波畸变进行了评估。在PSS®SINCAL软件中对该6母线直流微电网进行了仿真,并在Matlab/Simulink中对总谐波失真进行了分析。最后,在三种不同线段的极地故障情况下,研究了该系统的有效性。
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引用次数: 3
Sensorless SRM driven Solar Irrigation Pump with Grid-Support Using Vienna Rectifier 采用维也纳整流器的无传感器SRM驱动的电网支撑太阳能灌溉泵
Amarnath Yalavarthi, Bhim Singh
This paper presents power quality improvement in AC mains of grid-supported solar fed switched reluctance motor (SRM) water pump drive using a three-phase Vienna converter. The Vienna converter used at the front-end improves the quality of power drawn from the utility grid by reducing the harmonics and maintaining the unity power factor. Besides these features, The Vienna converter provides the DC link voltage regulation with balanced dual-output voltage making it highly suitable for mid-point converter fed SRM drive. The conventional diode bridge rectifier along with power factor correction converter uses a greater number of elements to achieve the similar performance. The overall grid-supported SRM driven solar water pump drive is modelled and simulated in Simulink environment and the performance of the drive is evaluated during different operating modes. It is observed that, under all operating conditions, the power quality indices of the utility mains are in compliance with the IEEE-519 standard.
本文介绍了采用三相维也纳变换器改善并网太阳能供电开关磁阻电动机(SRM)水泵驱动交流电源的电能质量。前端使用的维也纳变换器通过减少谐波和保持统一的功率因数来提高从公用电网获得的电力质量。除了这些特点外,维也纳变换器还提供具有平衡双输出电压的直流链路电压调节,使其非常适合中点变换器馈电SRM驱动。传统的二极管桥式整流器和功率因数校正转换器使用更多的元件来实现类似的性能。在Simulink环境中对整体并网SRM驱动太阳能水泵驱动系统进行了建模和仿真,并对该驱动系统在不同运行模式下的性能进行了评估。观察到,在所有运行工况下,市电的电能质量指标均符合IEEE-519标准。
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引用次数: 0
Distributed Primary and Secondary Control Strategy for Power Sharing and Voltage Restoration in a DC Microgrid 直流微电网电力共享与电压恢复的分布式主次控制策略
Raj Aryan, R. Ranjan, Amritesh Kumar
Because of having various advantages of direct current (DC) over alternating current (AC) including reduced losses and smooth integration with distributed energy sources (DERs), DC microgrids (DC MGs) increases more attention nowadays. The presence of a large number of DERs voltage support and proper power-sharing is the major problem in such a multisource DC MG. This paper discusses the problem associated with the power-sharing or current sharing accuracy between two parallely connected dc-dc boost converters in a DC microgrid. In this paper, primary and secondary control strategies for DC MGs are applied to provide good power-sharing accuracy among all converters and voltage restoration of the common DC bus. The main drawback of the conventional droop method under primary control is poor power sharing accuracy and drop in voltage of a common dc bus voltage because of droop action. The proposed average current and average voltage secondary control strategy improve the current sharing accuracy and common dc bus voltage restoration. The simulation results and experimental analysis are validated by using the verified proposed method.
由于直流电(DC)相对于交流电(AC)具有各种优点,包括降低损耗和与分布式能源(DERs)的平滑集成,直流微电网(DC MGs)越来越受到人们的关注。在这种多源直流电源中,存在大量的电压支持和适当的功率共享是主要问题。本文讨论了直流微电网中并联的两个DC - DC升压变换器之间的功率共享或电流共享精度问题。本文采用直流母线的一次和二次控制策略,以保证所有变流器之间良好的功率共享精度和公共直流母线的电压恢复。在一次控制下,传统的下垂方法的主要缺点是功率共享精度差,并且由于下垂作用导致直流母线电压下降。提出的平均电流和平均电压二次控制策略提高了电流共享精度和普通直流母线电压恢复。仿真结果和实验分析均得到了验证。
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引用次数: 1
Distributed Energy Trading Network: Decentralized and Secured 分布式能源交易网络:分散和安全
Sounak Bhowmik, M. Sarkar, D. Bose, C. K. Chanda
This paper tries to build a system, providing maximum participation and maximum resiliency for the existing power system using existing technologies only but in an innovative approach. The proposed ecosystem consists of distributed power generation nodes, consumers, smart grids, and microgrids to make peer-to-peer energy transactions easy, both physically and economically. The proposal can be divided into two parts, viz. physical and digital. A user cannot send power to another customer in need with few exceptions in a traditional system. This work has shown how each user can be connected to the smart grid via one or many micro-grids. Moreover, their trade will be automated on the digital side by Ethereum, a public blockchain that supports smart contracts. To make things more efficient and easy, we introduced a token-based economy, empowered by a smart contract. In this way, the resiliency of the whole ecosystem will be improved dramatically.
本文试图以一种创新的方式,在现有技术的基础上构建一个为现有电力系统提供最大参与和最大弹性的系统。拟议的生态系统由分布式发电节点、消费者、智能电网和微电网组成,使点对点能源交易在物理上和经济上都变得容易。该提案可分为两个部分,即物理和数字。在传统系统中,除了少数例外情况,用户无法向有需要的另一个客户供电。这项工作展示了每个用户如何通过一个或多个微电网连接到智能电网。此外,他们的交易将通过以太坊(一个支持智能合约的公共区块链)在数字方面实现自动化。为了使事情变得更加高效和简单,我们引入了一种基于代币的经济,由智能合约授权。通过这种方式,整个生态系统的恢复能力将得到显著提高。
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引用次数: 0
期刊
2020 3rd International Conference on Energy, Power and Environment: Towards Clean Energy Technologies
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