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Intelligent power dispatch data network solution analysis
Huawei's smart power dispatch data network is structured into two main parts: the backbone network and the access network. The backbone network includes the national key network, provincial backbone, and local backbone, utilizing a dual-plane architecture to ensure high reliability. Each plane acts as a backup for the other, significantly enhancing the network’s stability. It supports high-level nodes such as provincial centers, with link speeds of 155M, which are sufficient to accommodate future business expansion.
The access network connects power plants at all levels, including county and district control stations, and extends coverage to 35kV substations. To improve reliability, each plant station is equipped with dual routers, connecting to two adjacent access layers, enabling cross-configuration and ensuring continuous service availability.
**Background/Challenges**
The power dispatching data network carries critical scheduling services and is divided into two zones: the real-time control area (Zone I) and the non-real-time production area (Zone II). As a core component of power informatization, it manages the national grid, large regional networks, provincial, municipal, and county grids. With the development of the smart grid strategy, the formation of regional power grids, and the implementation of wide-area distributed systems and emergency command systems, the dispatch network faces three major challenges.
First, new business growth is constrained by limited bandwidth. Remote graphics terminals and IP-KVM require around 200K of maintenance bandwidth, but their impact can reach tens of megabytes, while current backbone networks only support N*2M. Additionally, there are insufficient interfaces, as more direct-control plants and 110kV/35kV substations are being added, overwhelming existing equipment and interface capacity. Limited coverage also restricts further smart grid development.
Second, the demand for higher service reliability is increasing. With multiple services running on a single platform, ensuring quality during traffic surges or link failures remains challenging. Some plant sites lack redundant resources, reducing overall network resilience.
Third, the complexity of network operations is growing rapidly. A large number of devices make fault identification difficult. IP technology requires high expertise, and troubleshooting often relies on individual experience. Moreover, the expansion of smart grids and distribution networks has led to a significant increase in the number of sites, making deployment and management increasingly complex.
The current dispatching data network is no longer suitable for the rapid development of UHV grids or the need for safe and stable operation, nor does it meet the requirements of the smart grid strategy.
**Solution**
Huawei’s smart power dispatch data network is divided into the backbone and access networks. The backbone network consists of the national, provincial, and local backbones, using backbone routers and optical transmission equipment. To ensure reliability, a dual-plane architecture is implemented, allowing for large bandwidth between nodes and full scalability to support future business needs.
The access network includes power plants at all levels and county/district control stations, extending coverage to 110kV and 35kV substations. It uses NE routers or S series switches, with MPLS VPN for isolation and redundancy to enhance reliability. At the plant station level, the network connects to adjacent access layers, enabling cross-preparation and improving service continuity.