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Intelligent power dispatch data network solution analysis
Huawei's smart power dispatch data network is structured into two main components: the backbone network and the access network. The backbone network includes the national key backbone, provincial backbone, and local backbone. It employs a dual-plane architecture, where the two planes serve as backups for each other, significantly enhancing the network’s reliability. This design ensures that critical nodes at or above the provincial level are efficiently connected via 155M links, which are capable of supporting future business expansion.
The access network comprises directly dispatched power plants and substations at all levels, including county and district-level adjustments. It extends its coverage to 35kV power stations. To improve reliability, each plant station is equipped with dual routers, connecting to adjacent levels of the access network. This cross-connection strategy enhances redundancy and ensures continuous service availability.
**Background/Challenges**
The power dispatching data network supports real-time control services (Area I) and non-real-time production services (Area II), making it a core component of power informatization. It manages the national grid, large regional grids, provincial, municipal, and county-level grids, as well as centralized control stations. With the advancement of smart grid strategies, the formation of regional power grids, and the deployment of wide-area panoramic systems and emergency command platforms, the dispatch data network faces three major challenges:
**New Business Development Constraints**
Rapid growth in new business demands has exposed limitations in bandwidth and infrastructure. For example, remote graphic terminals and IP-KVM require about 200K maintenance bandwidth, but their impact can reach tens of megabytes, far exceeding the current N*2M backbone capacity. Additionally, the number of interfaces is insufficient due to the increasing number of directly controlled power stations and 110kV/35kV substations. Limited provincial network coverage also hinders further smart grid development and application system implementation.
**Higher Reliability Demands**
With multiple services running on a single network platform, ensuring service reliability becomes more complex. During traffic surges or link failures, key services lack sufficient quality assurance. Some plant sites lack backup resources, reducing network resilience and scalability.
**Network Operation and Maintenance Complexity**
The rapid expansion of equipment, layered fault alarms, and high personnel expertise requirements make troubleshooting difficult. Dispersed site deployments and the growing number of smart grid and distribution network nodes add to the operational burden.
The existing dispatching data network is no longer suitable for the development of ultra-high voltage grids or the need for stable and safe operations, failing to meet the requirements of the smart grid strategy.
**Solution**
Huawei’s smart power dispatch data network is divided into a backbone and an access network. The backbone consists of national, provincial, and local backbones, using backbone routers and optical transmission equipment. A dual-plane architecture ensures high reliability, with ample bandwidth that can be expanded to support future business needs.
The access network includes directly dispatched power plants and substations, extending coverage to 110kV and 35kV stations. It uses NE routers or S series switches, with MPLS VPN for isolation and redundancy planning. Each plant station connects to adjacent access networks through border routers, enabling cross-preparation and improving service reliability.