5G's wide connection, large bandwidth, low latency and high security features are very consistent with the requirements of agile response and precise control of massive resources in the power system. In the past three years since 5G commercially used , the power industry has also brought about the vitality of digital transformation . In Zhejiang, 5G+ smart power collides with dazzling sparks, giving birth to a multi-integrated high-elastic power grid under energy Internet .
Starting from 2021, China Mobile and State Grid Zhejiang Power have begun to cooperate in the construction of 5G+ smart power. Over the past year of exploration and practice, Zhejiang has built the largest 5G+ smart power application scenario in the country - based on China Mobile's 5G power dedicated network combined with soft and hard slicing innovative applications. The 5G smart power dedicated network covers 11 prefectures and cities across the province, has more than 1,300 hard slicing base stations, more than 5,000 power terminals, and has launched smart power applications for 14 services. This 5G smart power dedicated network can realize the batch and secure access of in seconds that can interrupt the load terminal, can be remotely controlled and unmanned inspection, save 1.3 billion yuan in electricity investment costs and reduce carbon emissions by 13.4 million tons.
5G soft and hard slices to create a safe and controllable power dedicated network
The distribution network near Hongshan Industrial Park is mainly composed of overhead lines, with relatively large industrial load, high daily operating pressure of the distribution network, and great damage to faults.
"In the past, when the power grid failed, we all had to drive here from Qianjiang Power Supply Station, wear safety equipment and then use it to operate the pole. It takes one and a half hours to operate. Now if it trips, we can remotely control the switch through the 5G network." said Zhao Yuqi, a line maintenance worker in charge of this area.
provides Zhao Yuqi and his colleagues with extremely convenient "5G network for switching remote remote control" function, which is based on China Mobile's 5G power dedicated network software and hard slicing technology. At present, this technology has been widely used in the power grid in Zhejiang.
In March 2022, a power line at Meishan Substation in Beilun District, Ningbo City malfunctioned, resulting in difficulties in power supply in the Shuangshi Village in Meishan. At the critical moment, the power grid dispatching and command center decisively activated the 5G intelligent column switch , quickly isolated the originally faulty lines from the power grid, and remotely controlled them to provide power guarantee from adjacent lines. The fault that was originally handled for several hours now achieves accurate isolation of seconds and non-failure area recovery.
is different from other 5G smart power explorations. China Mobile has innovatively realized two application modes of soft and hard slicing in 5G power dedicated network in Zhejiang: through 5G hard slicing technology, it can establish end-to-end exclusive data channels, and carry production control services such as second-level load control; soft slicing technology is a non-exclusive channel based on the 5G network, which can carry management and data acquisition application data.
At present, China Mobile has completed the largest 5G hard slicing demonstration zone for power applications in Zhejiang, completed the first batch of interruptable load terminals in the country in seconds, and the adjusted load scale can reach 2 million kilowatts.
Since 2021, China Mobile and State Grid Zhejiang Power have cooperated to build the largest 5G+ smart power landing application scenario in the country, innovatively realized the two application modes of soft and hard slicing of 5G power dedicated network, completed the first batch of interruptible load terminals in the country's second-level interruptible load terminals, and launched a number of smart power applications.
5G virtual power plant has established green electricity "reservoir"
In recent years, the proportion of green energy in Zhejiang has increased rapidly. The power and energy carbon neutrality technology demonstration base adjacent to Hangzhou Asian Games Village , the roof is covered by a large area of photovoltaic panels, and there are two wind turbines running rapidly on the side. These roof photovoltaics and wind power generation achieve annual power generation of over one million kilowatt-hours, which can meet the power consumption needs of smart street lights in the Asian Games Village area, data centers and other equipment and facilities.
In Zhejiang's first carbon neutral substation, rooftop photovoltaic and wind power generation achieve annual power generation of over one million kilowatt-hours, and through 5G empowerment, flexible power dispatch between DC source grid-load storage scenarios is realized.
As Zhejiang's first carbon neutral substation, the power energy carbon neutrality technology demonstration base adopts the advanced communication technology of " Internet + 5G + intelligent gateway", which meets the needs of two-way communication between the power grid dispatching system and the user side, and realizes flexible power resource scheduling between the six DC source grid-load storage scenarios, including substations, charging stations, data center stations, DC distribution stations, photovoltaic stations, and energy storage stations.
"The carbon neutral technology demonstration base for power and energy has also become one of the pilot projects of '5G virtual power plants'. Through 5G empowerment, it realizes energy interconnection and friendly interaction with distributed resources from the supply side to the demand side, effectively improving the utilization efficiency of green energy." Shen Qiuquan, director of the industrial and energy industry of the Government and Enterprise Customer Department of China Mobile Zhejiang Company, said.
5G empowers smart power to move towards unmanned
Relying on the combination of 5G soft and hard slicing technology, some remote controls, robots, and drones have become active in smart power scenarios.
In the newly renovated 5G+ smart power plant -located in Datang Wushashan Power Plant in Xiangshan, Ningbo, three huge bucket turbines were parked on the track and making a buzzing sound. The operator was sitting in a clean and tidy control room, controlling the direction remote sensing and keyboard.
uses MEC calculation + hard slicing technology, and relying on OnePower smart power platform, this power plant has realized 5G remote control and unattended control of bucket turbines. The entire plant can save 370,000 kilowatt-hours in total power consumption in one year, and the stacking and removal operation efficiency is increased by 30%.
In the Wushashan 5G+ smart power plant in Datang, Ningbo, through MEC computing + hard slicing technology, relying on the OnePower smart power platform, the bucket turbine 5G remote control and unattended operation are realized.
Power inspection is the biggest pain point in the power transmission process. With the arrival of 5G smart power, the days when staff climb high towers and run power stations are getting farther and farther away.
As the drone slowly rises and flies to the inspection point, the details of insulators , ground wires and other details on the pole tower are carefully captured by the 4K high-definition camera, and are returned to the smart operation inspection and control application group in real time through the 5G network. Once a safety hazard is identified, the problem point information and relevant instructions will be transmitted to the flight management platform to trigger the automatic handling mechanism of the drone to eliminate the hidden dangers as soon as possible.
This is the 5G+ drone independent inspection application jointly developed by China Mobile and State Grid Zhejiang Power. Both parties have built the first "5G networked drone" independent inspection demonstration base in Hangzhou Bay New District, realizing the autonomous inspection operations of drones of 473.6 kilometers of lines and 760-base towers in the area.
With the arrival of mobile 5G+ smart power, today's power grid has achieved high load-bearing, high interaction, high self-healing, and high efficiency, becoming more "green heart and intelligence", providing strong support for implementing the "dual carbon" goal and helping the high-quality development of the economy .
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