Analysis On Low Voltage Power Line Carrier Communication Impact Power Grid And Electric Appliances

Currently the State grid company is developing and construction of the smartgrid. In the construction of the smart grid, the construction of power user electricenergy data acquire system is an important support for the development of thesmart grid, and power system communication technology is the core technologyof power user electric energy data acquire system, while the security and stabilityof the power system communication technology is directly related to thereliability and security of electricity to millions of households residents.Low-voltage power line carrier communication technology is the most importantinformation collection system of communication. Its safety, stability,electromagnetic compatibility can directly affect the power user electric energydata acquire system and even the construction of smart grid. This paper studiesthe low-voltage power line carrier communication impact electricity grid and theelectric equipment, it not only conducive to the development of low-voltagepower line carrier technology, but also has great significance to the constructionof the smart grid.This paper mainly studies the narrowband power line carrier communicationsignals. It is based on the narrow-band signal characteristics of low voltagepower line carrier communication and the characteristics of the electromagneticinterference, and it is according to the relevant provisions of the relevant EMCstandard and combined with the actual situation to improve, finally it is given alow voltage power line carrier communication of conduction disturbanceresistance test method.According to the working mechanism of the leakage protector, and frequencycharacteristic analysis of leakage protector circuit, and the leakage protectionfield environment, the carrier communication effect of the main causes of theleakage protector are given, the low voltage power line carrier communicationeffect is obtained by laboratory tests the conclusion of leakage protectionmalfunction.Also according to the working principle of electric power, analyzes thefrequency characteristic of household appliances power supply circuit, Thepossible reasons for the effect on electric power carrier signal are given, lowvoltage power line carrier communication effect is obtained by test theconclusion of electric power.At the end of the paper the low voltage power line carrier communicationelectrical impedance changes is studied, and through the test results. Accordingto the above three aspects of theoretical research and experimental results show that the low voltage power line carrier communication impact on power grid andelectric appliances.