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2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)最新文献

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Reliability Assessment of Power Converters with Partial Redundancy and Variable Power Distribution 部分冗余变配电电源变换器可靠性评估
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610833
Xin Zhang, Huanyue Liao
Conventional reliability assessment method mainly consists of three steps: building component-level reliability model, establishing system-level reliability model and assessing the reliability by reliability metrics. However, this traditional method have some limitations for power converters with partial redundancy and variable power distribution: for the component-level reliability analysis, it is very difficult to determine the importance of the component failure rate; For the system-level reliability analysis, the existing models do not work well for the power converters with partly redundant components; For the conventional reliability metrics, the converters reliability cannot be fully described when the power distribution of the converters varies. In order to solve these problems, three improvements are proposed by this paper. Firstly, failure rates of all components are compared and the important ones are chosen. Secondly, a system-level reliability hybrid model, which considering partial redundancy, is proposed. Thirdly, a new reliability metric MTTFr is presented to evaluate the reliability with variable power distribution. In this paper, a compact motor drive of the electric vehicle is utilized to validate the superiority of the proposed improvements.
传统的可靠性评估方法主要包括三个步骤:建立部件级可靠性模型、建立系统级可靠性模型和通过可靠性指标对可靠性进行评估。然而,对于部分冗余和可变功率分布的电源变换器,这种传统方法存在一定的局限性:对于部件级可靠性分析,很难确定部件故障率的重要性;在系统级可靠性分析中,现有模型对部分冗余部件的变换器可靠性分析效果不理想;对于传统的可靠性指标,当变流器的功率分布发生变化时,不能完全描述变流器的可靠性。为了解决这些问题,本文提出了三个改进方案。首先,对各部件的故障率进行比较,选择重要部件;其次,提出了考虑部分冗余的系统级可靠性混合模型。再次,提出了一种新的可靠性度量MTTFr,用于评估变功率分配下的可靠性。在本文中,利用小型电机驱动的电动汽车来验证所提出的改进的优越性。
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引用次数: 1
Technological review on enhancing the energy efficiency of MSW incineration plant 提高城市生活垃圾焚烧厂能源效率的技术综述
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610756
Haoxin Xu, Wenlin Lin, A. Romagnoli
Incineration is one of the methods in providing an efficient management of the municipal solid waste problem. At the same time, the energy released during the combustion of the waste can be harnessed for heat and generation of electricity. While there is potential for improved harnessing of electricity, the high chloride and sulphate content found in the waste limited the steam temperature to the current 400°C due to corrosion issues. Another limiting factor is the fluctuation in the gas temperature, which resulted in an unstable supply of heat to the heat exchangers. This paper briefly reviews the corrosion mechanism and the issues related to the temperature fluctuation from the combustion. This paper also discusses the current and new technologies used to overcome the corrosion attack on the ferrous surface and the temperature fluctuation.
焚烧是解决城市生活垃圾问题的有效方法之一。同时,废物燃烧过程中释放的能量可以用来供热和发电。虽然有改进电力利用的潜力,但由于腐蚀问题,废料中发现的高氯化物和硫酸盐含量将蒸汽温度限制在目前的400°C。另一个限制因素是气体温度的波动,这导致热交换器的热量供应不稳定。本文简要介绍了燃烧引起的温度波动的腐蚀机理和有关问题。本文还讨论了克服铁表面腐蚀和温度波动的现有技术和新技术。
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引用次数: 2
Renewable Powered Desalination System for Remote Islands in Singapore 新加坡偏远岛屿的可再生动力海水淡化系统
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610863
Brindha Chelliah, S. Manoj, D. N. Srikanth
The utilization of renewable energy resources intimately relate to sustainable development. Rapid increase in population and industrial development have propelled water resources to the forefront of challenges facing modern societies. Water covers about two thirds of the earth's surface; <1% is suitable for domestic and industrial use. In this study a work has been made to present a review, in brief, work of the highlights that have been achieved during the recent years world-wide and the state-of-the-art for most important efforts in the field of desalination by renewable energies, with emphasis on technologies and economics. This paper focuses on water sources, power demands and availability of potable water and purification methods that can be implemented in various remote islands in Singapore. A comparative study has been done to power the desalination plant using various renewable energy technologies. Solar powered RO desalination can possibly fill the belief of currently used desalination on fossil fuels, reduced operational costs, and improved environmental sustainability.
可再生能源的利用与可持续发展密切相关。人口的快速增长和工业的发展使水资源成为现代社会面临的首要挑战。水覆盖了地球表面的三分之二;<1%适用于家庭和工业使用。在这项研究中,简要地审查了近年来世界范围内取得的突出成果和利用可再生能源淡化海水领域最重要努力的最新进展,重点是技术和经济。本文的重点是水资源,电力需求和饮用水的可用性和净化方法,可以在新加坡的各个偏远岛屿实施。一项利用各种可再生能源技术为海水淡化厂供电的比较研究已经完成。太阳能RO海水淡化可能会填补目前使用的化石燃料海水淡化的信念,降低运营成本,提高环境可持续性。
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引用次数: 2
Integration of Energy Storage System with Renewable Energy Source 储能系统与可再生能源的集成
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610661
Dr. Srikanth Narasimalu, Brindha Chelliah
This Paper presents the analytical study of different configurations in integrating the energy storage system with wind turbines. The purpose of this study is to design a storage system that is capable to bring out a sustainable energy system which is reliable and is controllable such that they can be integrated into power system without causing performance degradation of the system or requiring additional flexibility. As an initiative this research, study and analyze the concepts of lead acid battery energy storage system (BESS) and establish a compressed air energy storage (CAES) facility, with a specific focus on renewable integration. The system is designed in a specific way to capture excess power prior to electricity generation so that the electrical components can be downsized for demand instead of supply. The study quantifies and demonstrate, the hybrid energy storage system. It integrates battery storage to have the capability of fast charging/discharging while compressed air energy storage as tool to reduce the intermittency in the power delivery. The research facilitated the study of integration of several renewable energy source and have a better understanding of the effectiveness of energy storage system (ESS) to support grid applications. Also, the study of concatenation of multiple energy storage system and their benefits in bringing up the steady power supply eliminating the intermittency in the power generation.
本文对储能系统与风力发电机组集成时的不同配置进行了分析研究。本研究的目的是设计一种存储系统,该存储系统能够产生可靠且可控的可持续能源系统,从而可以将其集成到电力系统中,而不会导致系统性能下降或需要额外的灵活性。作为本研究的一项倡议,研究和分析了铅酸电池储能系统(BESS)的概念,并建立了一个压缩空气储能(CAES)设施,特别关注可再生能源的整合。该系统以一种特殊的方式设计,可以在发电之前捕获多余的电力,这样就可以根据需求而不是供应缩小电子元件的尺寸。该研究对混合储能系统进行了量化和论证。它集成了电池存储,具有快速充放电的能力,同时压缩空气储能作为工具,减少了电力输送的间歇性。该研究促进了几种可再生能源的整合研究,并更好地了解了储能系统(ESS)支持电网应用的有效性。同时,研究了多个储能系统的串联及其在提高稳定供电、消除发电间歇性方面的效益。
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引用次数: 1
A Generic Gate Driver for SiC MOSFETs with adjustable Positive and Negative Rail Voltage 具有可调正负轨电压的SiC mosfet通用栅极驱动器
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610828
Yeo Howe Li, Venkata Ravi Kishore Kanamarlapudi
SiC MOSFETs are well known for possessing lower losses compared with silicon MOSFETS or IGBTs. In order to drive them efficiently, suitable drivers must be designed. However, most commercially available drivers and drivers in literature are suitable for only a limited range of SiC MOSFETs due to limitations on the MOSFET's gate voltage ratings. Hence, the drivers do not allow the designer to easily experiment with different SiC MOSFET models. In this paper, a generic SiC gate driver with adjustable positive and negative voltage rail is presented. The performance of the proposed driver is compared with a commercially available driver through experiment and it is shown that the proposed gate driver is able to drive the chosen SiC MOSFET more efficiently.
众所周知,与硅mosfet或igbt相比,SiC mosfet具有更低的损耗。为了有效地驾驶它们,必须设计合适的驾驶员。然而,由于MOSFET的栅极额定电压的限制,大多数市售驱动器和文献中的驱动器仅适用于有限范围的SiC MOSFET。因此,驱动器不允许设计人员轻松地实验不同的SiC MOSFET模型。本文介绍了一种具有可调正、负电压轨的通用SiC栅极驱动器。通过实验将所提出的驱动器与市售驱动器的性能进行了比较,结果表明所提出的栅极驱动器能够更有效地驱动所选的SiC MOSFET。
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引用次数: 2
IEC 61850 – An Approach to Facilitate Interoperability in Distribution Automation IEC 61850 -一种促进配电自动化互操作性的方法
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610748
Shiong Ghee Low, X. Liang, Shu-Jie Simeon Tan
Distribution Automation (DA), one of the key enablers to achieve Smart Grid, is rapidly gaining popularity among power utilities globally. This paper describes an example of a protection application scheme and elaborates on how the IEC 61850 application profile can be defined to ensure interoperability based on a Distribution Automation (DA) application.
配电自动化(DA)作为实现智能电网的关键技术之一,正在全球范围内迅速普及。本文描述了一个保护应用方案的示例,并详细说明了如何定义IEC 61850应用配置文件,以确保基于配电自动化(DA)应用的互操作性。
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引用次数: 3
A Generic Benchmark for Power Market Analysis From Generation Mix To End-Users 从发电组合到终端用户的电力市场分析通用基准
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610802
R. Rigo-Mariani, K. Ling, J. Maciejowski
This paper presents a benchmark to model power systems market mechanisms from the generation mix to the end-users. The objective is to develop a platform that can help solving long-term planning problems. The operation described here is the joined day-ahead (DA) clearing for the wholesale market and the individual optimal scheduling of end-users equipped with distributed solar generation and storage. The implemented methods lie on linear programming whose fast computation allows to consider the decentralized control of an important number of end-users. Several scenarios are investigated with different retail prices and CO2 mitigation policies as well as different sizes for the decentralized assets at the end-users’ level
本文提出了一个从发电组合到最终用户的电力系统市场机制模型的基准。目标是开发一个平台,帮助解决长期规划问题。这里描述的操作是批发市场的日前(DA)清算和配备分布式太阳能发电和存储的最终用户的个人最优调度。实现的方法基于线性规划,其快速计算允许考虑对大量最终用户的分散控制。本文研究了几种不同零售价格和二氧化碳减排政策以及最终用户层面分散资产的不同规模的情景
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引用次数: 0
The Simulation Model and Analysis of Transient Grounding Potential Rise in GIS Under VFTO VFTO下GIS暂态接地电位上升仿真模型及分析
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610774
Dong Yang, Tong Zhang, Heyan Huang, Donghui Luo, T. Yuan, P. Sun
In recent years, gas-insulated substations (GIS) have been widely used in power systems. However, because of its compact structure, very fast transient overvoltage (VFTO) with frequencies up to tens or even hundreds of megabytes can easily occur when switching devices such as disconnectors and circuit breakers are operated. Through research, it has been found that the generation of VFTO can often cause the GIS shell circulation and transient ground potential to rise, resulting in significant losses.This paper takes a GIS test field as the object of analysis and proposes a distribution parameter analysis model for the transient process of such equipmentCby establishing a transient ground network model that takes into account the mutual inductance between grounding bodies, the potential change of the grounding grid and the change of the transient current at the point of entry are analyzed.The results show that the VFTO voltage of the key nodes in the GIS is affected by the external conditions of the GIS equipment. Changing the external conditions of GIS equipment, the GIS shell transient ground potential rise will also change. Based on this characteristic, this article discusses how to suppress transient ground potential rise in GIS.
近年来,气体绝缘变电站在电力系统中得到了广泛的应用。然而,由于其结构紧凑,在操作断开器和断路器等开关设备时,很容易产生频率高达数十甚至数百兆字节的快速瞬态过电压(VFTO)。通过研究发现,VFTO的产生往往会引起GIS壳环流和瞬态地电势上升,造成重大损失。本文以GIS试验场为分析对象,通过建立考虑接地体间互感的暂态接地网模型,分析接地网的电位变化和入口处暂态电流的变化,提出了该设备暂态过程的分布参数分析模型。结果表明,GIS关键节点的VFTO电压受到GIS设备外部条件的影响。随着GIS设备外部条件的改变,GIS外壳暂态地电位上升也会发生变化。基于这一特点,本文讨论了如何抑制GIS中暂态地电位的上升。
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引用次数: 1
Characterization and Evaluation of 3.3 kV 5 A SiC MOSFET for Solid-State Transformer Applications 用于固态变压器的3.3 kV 5a SiC MOSFET的特性与评价
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610709
Hao Wen, Jinwu Gong, Yaofei Han, J. Lai
The SiC MOSFETs are replacing Si IGBTs in power electronics applications due to its several intrinsic features, such as higher temperature operation availability, higher breakdown electric field and higher switching speed. However, for the medium voltage range above 1.7 kV, the SiC MOSFETs are still at their early development stage and are not ready for commercialization. This paper presents the characterization and evaluation of 3.3 kV, 5 A SiC MOSFETs. They are the samples from GeneSiC and are not commercialized yet. Static and dynamic tests are performed for the device at different working conditions. For static tests, I-V characteristics, Rds(on) and parasitic capacitors characteristics were recorded for different temperatures. The dynamic tests were done with a Double Pulse Tester (DPT) with an inductive load up to 1.8 kV. The switching speed and switching loss are evaluated and analyzed for different conditions. A simple energy effective and charge effective Coss calculation method through DPT test results is proposed. The test results show its potential in medium voltage applications, especially in multistage cascaded topology.
SiC mosfet由于其几个固有特性,如更高的温度工作可用性,更高的击穿电场和更高的开关速度,正在电力电子应用中取代Si igbt。然而,对于高于1.7 kV的中压范围,SiC mosfet仍处于早期开发阶段,尚未准备好商业化。本文介绍了3.3 kV, 5 A SiC mosfet的特性和评价。它们是来自GeneSiC的样品,尚未商业化。在不同的工作条件下对该装置进行了静态和动态试验。对于静态测试,记录了不同温度下的I-V特性、Rds(on)和寄生电容器特性。动态试验采用双脉冲测试仪(DPT),感应负载高达1.8 kV。对不同条件下的开关速度和开关损耗进行了评估和分析。根据DPT试验结果,提出了一种简便的能量有效和电荷有效损耗计算方法。测试结果表明了该方法在中压应用中的潜力,特别是在多级级联拓扑中。
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引用次数: 8
Demand Side Management Solutions Study in Singapore Market 新加坡市场需求侧管理解决方案研究
Pub Date : 2018-10-01 DOI: 10.1109/ACEPT.2018.8610710
X. Bai, Geraldine Thoung, Patricia Alvina
Smart grid technology development progression has created a chance for the end users participation in the energy market. Singapore government has carried out the demand response programme for wholesale market since April of 2016. The Demand Side Management (DSM) in this paper looks into critical factors that will help users to reduce the energy bill with these solutions such as time-of-use (ToU) price, real-time price (RTP) and direct participation in the Demand Responses(DR) programme. This study reviews benefits for both market and users. These solutions would allow the users to become an active participant in the energy market. It also allows the government to plan better on the limited and costly energy resources, improve system reliability, and reduce transmission and distribution congestion, check and balance on the market power generation. Algorithms, such as linear programming, non-linear programming and machine learning are used in this paper to provide a numerical analysis for different DSM strategies. The research will make Singapore energy market more resilient and reducing energy consumption by introducing competition.
智能电网技术的发展进步为终端用户参与能源市场创造了机会。新加坡政府自2016年4月起实施批发市场需求响应计划。本文中的需求侧管理(DSM)着眼于帮助用户通过这些解决方案减少能源账单的关键因素,如使用时间(ToU)价格、实时价格(RTP)和直接参与需求响应(DR)计划。本研究回顾了市场和用户的利益。这些解决方案将允许用户成为能源市场的积极参与者。它还允许政府更好地规划有限和昂贵的能源资源,提高系统可靠性,减少输配电拥堵,制衡市场发电。本文使用线性规划、非线性规划和机器学习等算法对不同的DSM策略进行数值分析。这项研究将使新加坡能源市场更具弹性,并通过引入竞争来减少能源消耗。
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引用次数: 2
期刊
2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)
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