Long-distance high-speed broadband power line communication method

Abstract

The invention relates to a broadband power line communication method, in particular to a 35 kv-voltage grade line-based long-distance high-speed broadband power line communication method. The method comprises the following steps of: first, arranging a power communication device on a power line and coupling signals to the power line in a wired way; then, transmitting radio carrier signals to space according to high-voltage power line characteristics; and finally, receiving radio signals in a wireless way. Technicians overcome technical prejudices in the field, the radio signals transmitted by the power line and an antenna are acquired by a thought of taking the power line as the antenna and by adopting the method of transmitting by using the power line directly and receiving by using the antenna, so that the communication distance is expanded over 8 km successfully and effectively; therefore, the broadband power line communication with the first-stage relay of 14.5 km is realized.

Description

technical field [0001] The invention relates to a broadband communication method, in particular to a long-distance high-speed power line broadband communication method based on a 35kV voltage level line. Background technique [0002] Utilizing high-voltage power line broadband communication technology can establish its own dedicated data channel for the power system, which has outstanding advantages such as convenience, speed, low investment cost, and simple engineering construction. High-voltage power line communication only needs to install high-voltage power line communication equipment at both ends of the high-voltage power line, which makes communication on the high-voltage power line convenient and feasible. In the prior art, the long-distance high-speed power line broadband communication method adopted is to connect the sending end and receiving end of the power communication device with the high-voltage power line for communication, and implement wired sending and wi...

AI Technical Summary

Problems solved by technology

Therefore, affected by the distributed capacitance of high-voltage lines, it is difficult to achieve long-distance communication. The existing technology and practice show that with the original communication method, the longest communication distance between two adjacent power communication devices is only 1.8km. It is only applicable to the distribution network of medium voltage 10kV, and the communication distance on the power line of 35kV voltage level is shorter

Such a communication distance cannot meet the needs of the development of power system communication. Communication can be realized by using a low-speed carrier transmission system, but its transmission speed cannot meet the requirements of power system communication work; big hidden danger

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