What changes will 5G technology bring to smart grids, and what are the demands of smart grids for 5G technology? The reporter learned today that China Southern Power Grid is building a “5G + Smart Grid” application demonstration area in Nansha, Guangzhou, with a total of 50 business scenarios for power generation, transmission, distribution, transformation and comprehensive management of the power grid, which will be completed by the end of 2021.

Among them, Guangzhou Power Supply Bureau has carried out joint commissioning tests of business terminals and 5G communication Modules in 6 scenarios, including amphibious operation robots, substation inspection robots, and intelligent power distribution rooms, and will complete 23 types of 5G-based smart grids by the end of this year. Research and verification of typical business scenarios.

  

5G technology + UAV = real-time “Sky Eye System”

“Construction vehicles, please note that there is high-voltage electricity on the line above, please stop construction immediately, stay away from the high-voltage line immediately, and keep a safe distance of more than 5 meters!”

On the green fields of Xinlian 1st Village and Xinlian 2nd Village, Dagang Town, Nansha District, Guangzhou City, large-scale equipment such as excavators of 14 construction units are working in full swing. This is the construction site of the Dagang Advanced Manufacturing Base. An excavator on a construction site accidentally broke into the power facility protection area set up by Dagang Power Supply of Guangzhou Nansha Power Supply Bureau, triggering the alarm mode, and the high-definition camera sent back the picture in real time through 5G.

On the video surveillance system platform of the Dagang Power Supply Station to prevent external forces from destroying the command center, a drone took off from the nest immediately after receiving the order. This is the application scenario exploration of Guangzhou Power Supply Bureau based on the 5G technology “Sky Eye System” in preventing and controlling external damage to power facilities.

The use of drones to prevent external damage to power facilities has long been an idea in the Guangzhou Power Supply Bureau. Subject to the difficulties of long-distance transmission of UAV communication signals, the implementation process is often difficult to be effective. Now with 5G, everything is possible. Gao Junwei, a member of the operation and maintenance class of the Dagang Power Supply Station of Guangzhou Nansha Power Supply Bureau, stood on the roof of the Dagang Power Supply Station and pointed to the charging drone: “In the future, our employees will sit in the opposite office, and the drone will fly like a fly. The pigeons that go out fly away at a fixed point and time, and then fly back by themselves after the supervision is completed. At the same time, the images of the external lines can also be transmitted back to the platform in real time.”

5G technology with ultra-high bandwidth, ultra-low latency, and ultra-large-scale connection advantages will also change the traditional business operation mode and operation mode of the power industry on a larger scale, and promote the transformation of the smart grid.

Communication construction and maintenance costs will be greatly reduced

“5G may also bring about changes in business models. For example, the original settlement based on traffic may become charging for reserved resources. The change in this charging model will also change the data collection mode of some terminals in the power grid. For example, the direct collection of smart meter data will be realized. Wait.” Sun Lei said.

Not only that, 5G technology will also greatly reduce the cost of communication construction and maintenance in the distribution network business. After years of construction, China Southern Power Grid Corporation’s 110kV and above substations and other areas have achieved optical fiber coverage.

However, with the development of the power Internet of Things and smart substation services, such as video surveillance of transmission lines, power tunnel environment and video surveillance, substation video and environmental monitoring, substation inspection robots, mobile operation/inspection and other services, the business has emerged. Due to the characteristics of large bandwidth, high reliability, and mobility, it is necessary to consider introducing reliable wireless communication methods to solve service access.

In the field of power distribution, there are many points and wide areas. The existing optical fiber coverage has high construction cost, long opening time, and difficult operation and maintenance. Grid construction needs.

5G technology just meets the needs of the smart grid, especially the further development of the distribution network at this stage. Its two innovative functions of network slicing and capability opening will provide differentiated service guarantees for smart grids and realize reliable, manageable and controllable power terminal communications. All this will be further verified in the future.

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