要正视和研究电力线通信技术发展中的关键问题

Feasibility and commerce foreground of China powerline communication technology

DPLC技术在抗噪声、抗衰减和优化信道等方面已取得重要进展,但尚未取得根本性突破。同电信网相比,配电网用作高速数据传输媒介时屏蔽性差、阻抗不匹配、不对称和不均匀,致使作为"最后一公里"解决方案的DPLC技术至今还不能提供可靠和稳定的服务。DPLC在接入网中不是惟一的技术,有许多替代它的技术,如xDSL、HFC CM、WLAN以及FSO,相对于它们来说,DPLC仍处于初期阶段,在相当长的时间内不可能成为主导技术。在欧洲,DPLC引发的EMC和EMI,成为DPLC商业化的最大障碍。当务之急是建立同国际标准相适应的国家EMC标准和产品的工业技术规范。中国要发展及推广DPLC技术,必须适应EMC和EMI相关的法律环境,严格控制从国外引进的技术和产品的EMI影响,更重要的是要建立中国自己的DPLC开发研究机构和试验基地,大力加强和深入现在几乎没有的理论和实验研究,才能保证DPLC健康、顺利、成功地发展,DPLC技术才会占领市场,实现商业化。

DPLC technology has gained the important progress at the aspect of resisted noise and resisted attenuation and optimization channel etc.,and breaken through but not gaining essence yet. Compared with the telecommunication network,distribution network works at a high speed data transmission medium which shield the function badly and impedance miss match,asymmetry and uneven,so causing DPLC technology as the ' last a kilometer 'settlement scheme still can not provide the reliable and stable service up to now. DPLC technology is not the only technology in the access network and there are other alternatives,such as xDSL,HFC/CM,WLAN and FSO etc.DPLC is still a technology in its infancy.In a very long period ,DPLC can not become a leading technology. EMC and EMI's problems that Europe DPLC causing become the biggest obstacle of DPLC commercialization. Urgent matter at present is to build the EMC nation standard and the industry technical specification of product which can be adaptable each other with the international standard.If China want to develop and popularize DPLC technology,we must suit the law environment of EMC and EMI and control strictly the EMI influences ushered in. It is very important in guiding down of correlation competent department,building the DPLC development research organization and the trial base of China self,strengthening energetically theory and the experiment research and which now does not thoroughly almost have,then we can pledge the development of DPLC healthly,smoothly and successful,then the DPLC technology can be captured to market,and realized commercialization. 