With a developing economy, China prioritizes low carbon emission and clean energy; smart grids are an important part of China's policy to develop and use energy in a way that is responsible, secure, and reliable. Accordingly, China Southern Power Grid, which provides electricity to 230 million people, piloted a smart grid empowered by wireless broadband.

Huawei was called on to build a wireless broadband smart grid solution, which enabled China Southern Power Grid to deploy the world's first wireless distribution communication network at a frequency of 1.8GHz. As the first 4G TD-LTE enabled smart distribution network, it features automatic distribution and measurement, as well as video surveillance of the distribution network etc. This makes the grid smarter. Furthermore, it can provide China Southern Power Grid with higher wireless bandwidth for distribution automation data collection, control and video surveillance, as well as emergency communication, distribution network online monitoring, BYOD and other value-added services.

The smart grid can not only save energy and reduce emissions, but also increases power supply reliability, and lays the foundation for smart homes. The success of the smart grid proves the feasibility and superiority of eLTE in power distribution automation.

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“Thank you Huawei for constructing a wireless communication network. It’s a great start for our power distribution automation plans. Zhuhai Bureau will continue to build these systems, and cover 80% of the city to further spread the benefits. This pilot will allow us to form a complete strategy for further development. We have made the first step and now look forward to more achievements.”

Huang Yuanfeng, Senior Communication Engineer, Zhuhai Bureau, Guangdong Power Grid

High capacity and bandwidth: To support massive user access to the smart grid, Huawei eLTE maximizes the allowed number of LTE terminals; a single sector can support as many as 1200 online users at one time; besides, Huawei also introduced data a collection terminal, and communication access points have been increased tenfold with 350 points per square kilometer in dense urban areas; at the same time, a 10MHz urban scenario at this density can reach an average throughput of 20Mbps, with a single BTS covering an area four kilometers in diameter.

Access latency below 100ms: Huawei TD-LTE uses the access delay minimization plan, which keeps the access latency lower than 100ms. In pilot testing, downlink latency maxed out at 11ms, while uplink latency never surpassed 59ms.

Multi-level QoS guarantee: Huawei adapted an LTE QoS mechanism to satisfy electricity supply business demands, developed prioritized strategies according to different business electricity supply needs. As a result, transmission of the key data and remote control of distribution network automation is ensured.

Wireless broadband smart grid solution

Leveraging 4G TD-LTE technologies and industry-exclusive wireless spectrum (1785MHz-1805MHz), the solution is designed for the demands of automatic power distribution and measurement, as well as video surveillance of distribution networks and so on. This solution provides the capabilities of high bandwidth wireless data access, including data collection, control, and video surveillance, as well as emergency communication, distribution network online monitoring, BYOD, and other value-added services.


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