Applications
Development Status of Domestic Power Communication
In the current era, information and communication technologies are advancing rapidly. The development trends of telecommunication technology include: IP-based network service applications, packet-based network switching technologies, broadband network infrastructure, simplified network functional structures, and integrated tri-network convergence. Power communication achieved remarkable success in the early 1980s, but by the late 1990s, its technological level had become relatively outdated.
Therefore, technological innovation has been prioritized as the most critical task for power communication development. The technical development directions for power communication have been defined: In transmission, power communication will focus on developing fiber optic communication to effectively utilize abundant communication resources embedded in power grids, while adopting WDM and DWDM technologies appropriately. Existing microwave communication infrastructure will be fully utilized with necessary technical upgrades to enhance the transmission network framework. For service networks, ATM and IP technologies will be employed to build comprehensive power data network service platforms, providing operational support and services for power markets, production dispatching, and informatization of the power industry.
Meanwhile, power communication will monitor the development of IP technology in transmitting critical power operational services and explore data transmission technologies utilizing power distribution lines. Currently, the State Grid Corporation system is constructing nearly 10,000 kilometers of OPGW optical cables, including routes such as Beijing-Shenyang-Harbin, Longquan-Wuhan-Shanghai, and Longquan-Zhengzhou-Shijiazhuang-Beijing. By approximately 2005, a "Three Vertical and Four Horizontal" fiber-optic backbone communication network framework is expected to be completed.
The power system possesses inherent potential and resource advantages in developing telecommunications. The potential lies in its nationwide dedicated communication network covering the power system and abundant communication infrastructure. Resource advantages are first manifested in long-distance transmission: Rapid deployment of long-distance communication capabilities through power-specific optical cables such as Ground Wire Wrapped Optical Cable (GWWOP), All-Dielectric Self-Supporting (ADSS) optical cables, and Optical Fiber Composite Ground Wire (OPGW) installed along transmission lines. These power-specific cables feature high reliability with minimal risk of external damage, and mature technologies—particularly OPGW—which have been widely adopted domestically. They are secondly manifested in local transmission: Urban power system pole lines and cable trenches can be utilized for communication services, playing significant roles in broadband access networks.
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