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本文主要阐述电能变换装置在新能源供电系统中的核心作用,以及电力电子变换技术与现代电源技术的融合,研究几种电能混合供电方式,重点探讨集成供电系统的电源变换、智能管理及安全控制等问题,并展望了新能源供电系统的应用前景。 相似文献
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本文讨论了对于新能源供电系统与电能变换装置应用具有重要作用的问题,着重探讨电力电子变换、系统集成和技术融合。论文首先论述了风力发电、太阳能电池和燃料电池等几种新能源的供电方式,并提出电源变换在新能源电力系统中的核心作用是值得注意的共性问题和关键技术。为此,电能变换装置特别是直流变换器和交流逆变器被广泛地用于新能源电力系统,以组成集成供电系统。论文进一步提出了技术融合的思想,将现代电源技术、功率变换技术、控制方法、安全保护及智能管理等结合成一种综合方法来解决目前面临的问题,并展望了新能源电力系统的在混合供电、分布式电力系统和便携式电源等方面的应用前景。 相似文献
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《电力电容器与无功补偿》2020,(3):170-173
谐波问题、三相不平衡以及无功功率引起的电压稳定性问题已经使高层民用建筑成为城市供电电能质量较差的区域,对于这些区域的电网需要加强管理,保证整体供电网络的供电质量,防止供电设备及用电设备损坏。本文针对高层民用建筑电能质量问题进行研究,分析了其供电系统的负荷特点以及存在的三相功率不平衡、谐波过大和功率因数过低等电能质量问题,分析了相关电能质量治理设备的优缺点,并提出了面向该类电能质量问题的优化解决方案。 相似文献
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380/220V三相四线低压供电系统是工业和民用的常用电源,对其用户有功电能的计量不仅是供电管理部门极为重视的问题,也涉及到用户的切身利益。然而,由于种种原因,我们可遇到用户电量计量不准确的现象。本文将结合笔者多年供电管理的经验,主要以三相四线有功电能表(以下简称电能表)的使用为例,谈谈为提高有功电能计量的准确性应注意的几个技术问题,与同行交流。 相似文献
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《Education, IEEE Transactions on》1981,24(3):204-209
Energy usage in the form of electricity constitutes a large portion of energy consumption in developed countries. Electric energy is generated from primary energy sources such as coal, nuclear, natural gas, petroleum, hydro, geothermal, etc. The generation, management, and utilization of electric energy is constrained with technological factors, environmental and safety considerations, capital requirements, etc., resulting in limitations of primary energy source utilization. This paper describes an interactive computer program which has been developed to aid the instruction of problems related to primary energy source utilization for the production of electric energy. The computer program has been developed for a graduate course on power system planning. The program can be used to study the major implications of alternative national energy policies, as well as utility originated policies. Examples are load or supply management, dispersed or central storage, dispersed generation, cogeneration, plant conversion, etc. The paper describes the interactive simulation program and associated theory and three examples of computer program utilization. 相似文献
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工矿企业及农村变电站无法取用可靠的交流操作电源,在主供电源线失电时,也无法应用备用电源自投装置以快速恢复供电(因操作电源消失)。提出采用电容储能器操作电源不失为一种可行的办法。 相似文献
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本文从我国能源的分布、开发、运输、利用等方面的特点出发,讨论分析了火电基地和水电基地的开发和能源外送存在的问题,并探讨了解决途径。 相似文献
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本文基于湖北能源的分布及开发状况,分析湖北电力能源发展面临的问题,提出加快湖北电力能源发展的战略思路:发展特高压电网,有序开发省内资源,统筹推进电源接入环节智能化。 相似文献
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Samir Kouro 《电力电子技术》2011,45(8):3-10
The increase in the installed capacity of wind energy conversion systems(WECS) has triggered the devel-opment of more demanding grid codes and additional requirements on performance.In order to meet these require-ments the industry trend has shifted to full-scale power converter interfaces in modern multi-megawatt WECS.As con-sequence,a wide variety of new power converter topologies and WECS configurations have been introduced in recent years.Among them,current source converter(CSC) based configurations have attracted attention due to a series of advantages like:simple structure,grid friendly waveforms,controllable power factor,and reliable grid short-circuit pro-tection.This paper presents the latest developments in CSC interfaces for WECS and related technologies such as modulation methods,control schemes and grid code compatibility. 相似文献