Abstract
In the field of PLC, the standardization process on international level is progressing very slowly. The EMC Laboratory of the North China Electric Power University has received the task to develop a measurement method for the field radiated by PLC installations and a standard to be used in the future for the regulation of the PLC deployment. After a short introduction of the standardization process at international level, the paper presents measurements performed at the North China Electric Power University of radiated fields due to PLC. Comparisons of the field with various limits are shown. Finally the paper also presents a review of the regulatory situation on international level.
Keywords: PLC, standardization, electromagnetic disturbances.
1. Introduction
In the last 6 to 7 years, feasibility studies have been performed in various countries to check the possibility of using the low voltage distribution network to provide data transmission and eventually also telephonic links to individual customers at frequencies up to 30 MHz. This new technology is called Power Line Communication (PLC). This application is particularly interesting for power utilities which, on one side can enter in this way the telecommunication market and use their network for power network data transmission, on the other side can use this technology to control their own network. However, this transmission mode in the frequency band extending from 1.6 to 30 MHz presents various and quite complex EMC problems. The main problem isproduction of disturbances in the network and in the environment.
摘要
在該領(lǐng)域的PLC ，標(biāo)準(zhǔn)化進(jìn)程，國際一級(jí)的進(jìn)展十分緩慢。 EMC的實(shí)驗(yàn)室，華北電力大學(xué)收到了任務(wù)，制定一個(gè)測(cè)量方法，為外地輻射裝置用PLC和標(biāo)準(zhǔn)，用于在今后的監(jiān)管的PLC部署。經(jīng)過簡(jiǎn)短介紹的標(biāo)準(zhǔn)化進(jìn)程在國際一級(jí)，提出了測(cè)量數(shù)據(jù)進(jìn)行的華北電力大學(xué)的輻射領(lǐng)域，由于PLC的。比較外地的各種限制顯示。最后，文件還提出了審查監(jiān)管情況，國際一級(jí)。
關(guān)鍵詞： PLC ，標(biāo)準(zhǔn)化，電磁干擾。
1 .導(dǎo)言
在過去6至7年，可行性研究已經(jīng)完成在不同國家，以檢查是否有可能利用低壓配電網(wǎng)絡(luò)，使數(shù)據(jù)傳輸和電話聯(lián)系，最終也對(duì)個(gè)人客戶的頻率高達(dá)30 MHz的。這一新技術(shù)被稱為電力線通信（ PLC ）的。這種應(yīng)用是特別有趣的是電力，一方可以以這種方式進(jìn)入電信市場(chǎng)，并利用其網(wǎng)絡(luò)，電力網(wǎng)絡(luò)的數(shù)據(jù)傳輸，另一邊可以使用此技術(shù)來控制自己的網(wǎng)絡(luò)。然而，這種傳輸模式中頻段從6月1日至30兆赫的各種禮物和相當(dāng)復(fù)雜的電磁兼容問題。主要的問題is production的網(wǎng)絡(luò)中的干擾和環(huán)境。
2 .干擾源
干擾的來源都是輻射，并進(jìn)行：-排放的電磁噪聲，可干擾無線電通訊的安全或軍事用途，或干擾無線電業(yè)余愛好者;-進(jìn)行差分和共模電流可以穿透任何設(shè)備連接到網(wǎng)絡(luò)中，公司正在努力。騷亂有兩種類型的來源：-信號(hào)源的不對(duì)稱，由于耦合不對(duì)稱;-不平衡的低壓配電網(wǎng)（ LVDN ） ，因此一個(gè)共同的模式，以差模轉(zhuǎn)換。轉(zhuǎn)換差別的共同模式由于網(wǎng)絡(luò)不平衡分析了各種文件，例如在[ 1 ] 。不同的解決方案已經(jīng)緩解還提議在文獻(xiàn)[ 2 ， 3 ， 4 ] ，但研究工作必須進(jìn)一步繼續(xù)。