5g helps smart grid applications

At the summit, Hong Danke, director of Communication Department of system operation Department of China Southern Power Grid Co., Ltd., introduced the experience and thinking of 5g application of China Southern Power Grid. It is reported that in recent years, China Southern Power Grid Corporation has continued to promote the transformation of smart grid operators, which requires transparency in the status of power grid equipment, the operation status of power grid and market transaction status, involving a large number of sensing equipment, including monitoring equipment and acquisition equipment, which puts forward high requirements for communication.

To truly achieve smart grid, we should first cover the distribution network of thousands of households. At present, there are many of these services, some are narrowband, some are broadband, some have high requirements for real-time performance, and some have high requirements for reliability. However, these different needs are basically supported by the public network, and the private network covers less than 2%. Therefore, a new challenge at the distribution network level is the low-cost coverage of massive terminal communication.

Faced with these challenges, China Southern Power Grid conducted some research on 5g in cooperation with relevant manufacturers and operators. It began to follow up in 2017 and jointly promoted with some manufacturers in 2018, including the application of 5g standard in power grid, the release of white papers on power industry, and the safety isolation analysis of 5g. In 2018, China Southern Power Grid established a special working group within China Southern Power Grid and officially became a member of 3GPP and CCSA organizations. It began to work to incorporate smart grid demand into 5g international standards and has submitted 14 power demand proposals to 3GPP.

5g technology will bring profound changes to the development of smart grid

Hong Danke believes that 5g network meets the needs of smart grid development and provides a better solution for distribution network communication business, especially to meet the requirements of ubiquity and full coverage. The three technical characteristics of 5g provide differentiated network service capabilities for different services of the power grid, especially the network slicing technology provides safe isolation capabilities for different service partitions.

“5g technology will certainly bring profound changes to the development of smart grid. In particular, the application of a large number of smart sensing devices will help the grid become transparent and perceptible, and truly realize the interconnection and perception of all things,” said Hong Danke. It is revealed that China Southern Power Grid will carry out a lot of work in Guangzhou and Shenzhen in the next two years to form a sharing and win-win mechanism with operators and create a benchmark vertical industry application.

Three steps of 5g network construction

Zhao weiduo, Internet industry director of ZTE Co., Ltd., said that 5g applications are divided into two major aspects in the industrial field: in plant and outside the plant. It is a process of increasing difficulty from Ethernet to the following operating network in the plant. Generally speaking, the initial applications are first concentrated outside the factory, such as remote maintenance and remote monitoring, which will involve cost and manpower. The first step in the factory is to replace the existing WiFi network.

From the perspective of the landing time of 5g industrial applications, in the short term, it will mainly be data acquisition before 2021, which is the most basic demand of industrial applications. In the medium term, real-time control or high-precision positioning in some factories may be realized. In the future, wireless flexible intelligent factories will be finally realized to realize flexible production lines and flexible production.

Zhao weiduo introduced that industrial ar will be an important application of 5g. At present, the combination of the two can be applied to several major fields. The first is digital design collaboration. Engineers no longer need to do some actual simulation models. Wearing ar glasses, they can be free from space constraints. Of course, the construction and development of AR content still needs time; The second is remote operation assistance, including sales and market products, which are more practical application scenarios and valued by customers. The third is machine vision. At present, most of machine vision is wired. In the future, through the ability of 5g with low delay and large bandwidth, it will be processed in the cloud, which will greatly reduce the requirements for local computing power.

The construction of enterprise 5g network can be divided into three steps. The first step is to build enterprise 5g wireless quasi private network to replace the existing WiFi network and wired IP. The diversion can be realized through edge computing. Enterprise data directly flows back to the enterprise’s local server after mobile edge computing. There is no need to bypass the operator’s public network to dispel the enterprise’s concerns about data security. The second step is moving edge calculation. 5g can use moving edge calculation to process the data in the process of collecting data. The third step is to realize wireless free combination of all equipment and production units in the factory in the future.

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