Application of DWDM Technology in Power System

The advent of new communication equipment does not indicate the denial of the original equipment and technology, but should be inheritance, development and innovation. 64k sub-rates—PDH—SDH—DWDM all embody and follow this principle. From the analysis of the current application status in the power system, the DWDM technology level of wavelength division multiplexing can not completely replace SDH, but it can cooperate with SDH technology, learn from each other, optimize the power communication network, improve the communication bandwidth in an all-round way, and ensure the security of the network system. with stability.

From the current DWDM equipment and technology, not only optical amplifiers, demultiplexers, combiners, dispersion compensation and other components are required inside the equipment, but also more fiber jumpers. SDH equipment has a higher probability of failure, so it is unscientific to use DWDM to transmit scheduling data.

From another point of view, DWDM, as the improvement and supplement of SDH, can completely provide a protection channel for scheduling data transmission. In addition, SDH network management data is based on packet transmission, most of which are Ethernet, so wavelength division multiplexing DWDM technology can provide protection channels for SDH network management, and SDH can also stabilize the role of DWDM network management in providing protection channels.

We can predict that the promotion and implementation of Dense Wavelength Multiplexing (DWDM) technology will provide strong support in high-definition video conference, remote video surveillance and NGN to improve power communication bandwidth. Its biggest advantage is high performance and low price. . Scientific and rational division of DWDM and SDH services can give full play to their respective advantages, reduce the pressure on network management, and improve the level of communication operation and management.