Communication gateway system of low-voltage distribution network and early warning method

The invention relates to the technical field of communication, and discloses a communication gateway system and an early warning method of a low-voltage distribution network, and the system collects power line channel noise transmitted by a power supply equipment layer in real time through a gateway, carries out the modeling of the power line channel noise through a support vector machine and a wavelet neural network, carries out performance evaluation on the two noise prediction sequences obtained by modeling by using a root-mean-square error, determines an optimal noise prediction sequence with the most accurate noise prediction, compares the optimal noise prediction sequence with a preset safe noise threshold so as to judge whether the optimal noise prediction sequence is abnormal or not, marks the optimal noise prediction sequence if so, and generates early warning information for early warning, and therefore the real-time performance and accuracy of the early warning method for the power line channel noi