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就电力线宽带接入网络的原理、优势进行了阐述。对宽带电力线通信(PLC)技术的国内外发展现状及存在的问题与争议进行了分析,并对宽带电力线通信技术的应用提出了一些建议。 相似文献
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电力线宽带通信是实现电网与电信网、广播电视网、互联网有机融合的有效手段,是支撑智能电网用户侧交互功能的重要技术方向.文章搭建了一个面向智能电网的电力线宽带通信性能测试平台,通过一个视频点播系统来对电力线宽带通信性能进行评估,验证了电力线宽带通信设备对"多网融合"视频点播等服务的支撑能力,分析了影响数据可靠传输的主要因素... 相似文献
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电力线宽带通信的关键技术及发展前景 总被引:1,自引:0,他引:1
作为一种新兴的技术,电力线宽带通信中,有待完善的方面还很多.文章围绕电力线宽带通信的原理,比较了电力线宽带通信的各种组网方案,对相关技术环节及其发展现状及市场前景进行了全面的介绍,以期为这项技术在我国的发展提供技术参考. 相似文献
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介绍了电力线宽带网络技术,详细阐述了电力线宽带网络技术的关键技术及原理,阐明了扩频通信SSC技术和正交频分复用OFDM技术及其在电力线通信技术上的应用,分析了电力线通讯技术特点及其存在问题,最后给出了电力线通信技术在家庭联网上的应用及其实现方案。 相似文献
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分析了低压电力线通信信道的特性,根据其信道特性建立了能体现频率选择性衰落和多径衰落的低压电力线信道模型。针对电力线存在衰减和噪声干扰的问题,在对现有几种电力线载波通信的宽带调制技术原理分析的基础上,使用MATLAB/Simulink软件建立了各技术的宽带电力线通信系统模型,并进行仿真实验,最后采用误码率和信噪比两个指标对各系统模型的性能进行分析比较。 相似文献
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本文讨论了OFDM应用于电力线载波通信的原理,探讨了通信系统的硬件实现,提出了一种基于OFDM的电力线宽带高速通信系统的实现方案,并对其应用于小区集中抄表做了详细的论述分析,试点项目从变电站10kV中压出线到低压用电终端均采用电力线宽带通信,传输速率高达2Mbps以上. 相似文献
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介绍了智能电网、电力线宽带载波通信、OFDM的概念,然后从噪声、衰减两个方面入手对中、低压宽带电力线载波通信信道进行建模,最后结合OFDM技术特点提出将OFDM技术应用于智能电网中,以解决中、低压配电网通信通道的干扰问题。 相似文献
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针对基于宽带PLC的智能化小区对电能计量系统的要求,介绍了一种基于宽带电力线通信技术来实现远程抄表的设计方案。该系统以高性能单片机C8051F02X和以太网控制器RTL8019AS为核心,以低压电力线作为数据通信的媒介,使电子电表通过宽带电力线接入到以太网中,从而实现远程自动抄表。与目前流行的其他自动集抄系统相比,该系统无需专门铺设线路或租用电信公司线路,节约了成本;通过专门的软、硬件防护措施,提高了系统的可靠性;宽带电力线通信,保证了系统的实时性。该方案具有较为广阔的应用前景。 相似文献
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Yong Xu Yinghua Lv Biao Yang Hongxin Zhang 《Frontiers of Electrical and Electronic Engineering in China》2009,4(2):199-204
High-speed broadband power line communication (BPL) is a novel and practicable technique for Net-atHome or home area local
area networking (LAN). Because of the characteristics of BPL, the electromagnetic wave emitted from the BPL transmission media
will influence the indoor electromagnetic environment, which would also affect the performance of other wireless communications.
Based on the analysis of the communication channel characteristic, network impedance and attenuation characteristic of the
BPL, this paper proposes a novel model for calculating the BPL radiation and the computer simulation model, which are proved
by the coherence of the simulation and the test data. The interferences from the high-speed BPL to indoor wireless communications
are analyzed to stipulate the standards of high-speed BPL in the future.
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Translated from Chinese Journal of Radio Science, 2008, 23(3): 539–544 [译自: 电波科学学报] 相似文献
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Near-field coupling between broadband over power line (BPL) and high-frequency communication systems
Electromagnetic coupling between a broadband over power line (BPL) system and an HF communication system is discussed in this paper. Numerical analyses using the method of moments were performed to determine the near-field coupling between the BPL and communication systems at 3.5, 7, 14, and 28 MHz. Half-wave dipole and quarter-wave vertical antennas were positioned at 1-m intervals along the power line to find the maximum and minimum signal levels caused by the BPL system. Signal levels induced into the BPL system by a 100-W HF transmitter are also presented. 相似文献
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随着配电设备数量不断增加,宽带电力线载波频谱资源渐显匮乏。文章认为,引入认知频谱的概念组成宽带电力线认知通信系统,可在电力线衰落的信道上侦测其他配电设备不用或没有充分利用的频率,采用正交频分多址技术进行通信,并提出一种基于分布式宽带电力线认知通信系统的子载波分配方案,仿真结果表明了所提算法的有效性和优势。 相似文献
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用电力线上网进行高速数据传输,是通信技术发展的一个方向,也是通信技术多样化的要求。文章对电力线通信调制解调器进行整体设计:以OFDM作为支撑技术,选择TMS320VC5409作为核心处理器,以TLC5510、AC101LKQT作为外围芯片,共同构造低压配电网的宽带电力线通信Modem。在总体设计方案基础上,对OFDM参数设计进行了讨论。 相似文献
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《Power Engineer (see also Power Engineering Journal)》2007,21(1):38-43
This paper discusses the challenges and benefits of Broadband over Power Lines (BPL) for the utilities and customer. BPL provides utilities with benefits beyond additional revenue. The same system that transmits Internet data can be used to remotely monitor household electricity usage, eliminating the need to send a technician out to inspect the household meter. The system can also provide detailed feedback on electricity usage in real time, which could potentially detect brownouts before they escalate into blackouts. For home and office broadband users, the ubiquity of power lines offer services that were not available to many in remote areas. For broadband users in the urban areas, additional choices mean competitive prices and better services 相似文献
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Direct sequence code division multiple access (DS-CDMA) and orthogonal frequency division multiplexing (OFDM) systems are two options for broadband power line communications. In this paper, a comparison is made between the CDMA and OFDM systems. The bit error rate (BER) performance and the optimum overall data rate of the CDMA and OFDM systems are analyzed and compared, using the criteria of the same bandwidth occupation, the same transmission power for each user, the same total number of users in the system and the same power line channel. The comparison is based on the analytical models that are developed and verified by simulations. 相似文献
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