Test Methods for EM Emission for Broadband Carrier Communication Systems over Low-voltage Power Lines

Abstract

IEEE 1901.1 Standard for Medium Frequency (less than 15 MHz) Power Line Communications for Smart Grid Applications jointly formulated by China Electric Power Research Institute and State Grid Information & Telecom Technology Group was officially released and implemented recently. This standard will promote the rapid development of power line communication (PLC) chip, communication module and intelligent terminal industry. Under this background, in order to accurately quantify the impact of large-scale deployment of PLC systems on various short-wave services and provide support for subsequent decision-making, it is necessary to design a scientific and reasonable electromagnetic (EM) emission test scheme for low-voltage power line broadband carrier communication systems (LVPLBCCS). This test scheme actively draws lessons from the EM emission measurement standards of international PLC systems, and combines with the practical application of China’s PLC systems, develops a test method that meets the practical application scenarios of China. Including conducted disturbance test and radiated disturbance test, the proposed test method was carried out in laboratory conduction project, laboratory radiation project and actual field radiation project, which effectively ensures the reliability, accuracy, practicability and integrity of the test method.