5G enables extensive construction of the electric power Internet of things

4G changes life, 5G changes society.In 2019, 5G (fifth generation communication technology) has become one of the hottest topics in the world.The ministry of industry and information technology issued 5G commercial licenses to four operators on June 6, marking the first year of 5G commercial operation in China.From what aspects will 5G enable the extensive construction of the electric power Internet of things and open up new space for the development of the energy Internet?

What are the advantages of 5G for the industrial Internet of things

What are the characteristics of 5G?Industry insiders believe 5G should contain at least five basic characteristics: high speed, high capacity, high reliability, low latency and low energy consumption.

High rate: 5G communication rate includes peak rate, regional rate and edge rate.Peak rate refers to the maximum rate under the best conditions, requiring no less than 20G bit rate (BPS);The regional rate refers to the total rate supported by the communication system at the same time, which will increase by more than 1000 times compared with 4G.Edge rate refers to the communication rate obtained by the user in the worst 5% quantile. It is generally required to be between 100Mbps and 1Gbps.

High capacity: 4G can connect a limited number of terminals, mainly mobile phones, while 5G can connect a large number of devices, which can support 1 million mobile terminals per square kilometer, including household appliances and various wearable devices.

High reliability: 5G can successfully send a 32-byte layer 2 protocol data unit with a 99.999% probability.

Low latency: communication latency is the time it takes for information to travel from one end to the other.4G has a latency of around 50 milliseconds, which has little impact on the communication between people, but cannot meet the needs of some industrial applications.

Low energy consumption: if the batteries of sensors and communication devices need to be replaced or recharged frequently, it will bring great obstacles to the development of the Internet of things.The low energy consumption characteristic of 5G will effectively solve this problem.

5G is oriented to the enhanced mobile Internet application scenario, which can provide higher experience rate and greater access capacity of bandwidth.For the interconnection of devices in the Internet of things, it optimizes signaling control capability at higher connection density, and supports efficient access and management of large-scale, low-cost and low-energy devices.Oriented to vertical industry application scenarios, it can provide low latency and highly reliable information interaction capability, supporting highly real-time, highly sophisticated and highly secure business collaboration between interconnected entities.

What will 5G bring to power grid enterprises

In 2019, state grid corporation of China formally proposed to build a world-class energy Internet enterprise of "three types and two networks", and to fully deploy and build the ubiquitous power Internet of things.The arrival of 5G can accelerate the construction of ubiquitous electric Internet of things from the aspects of interconnection of everything, precise control, mass measurement and broadband communication.

The ubiquitous power Internet of things needs to collect massive data including system real-time measurement data, video monitoring data and so on.The high speed of 5G can provide strong support for the transmission of massive data.Ubiquitous power Internet of things related business needs to respond to various changes in the system in a timely manner to achieve accurate control.5G low time delay technology can achieve millisecond precision control of power service.

In terms of demand response, with large-scale and high proportion of renewable energy grid connection, dynamic demand response oriented to shorter time scale, such as frequency modulation, becomes particularly important.The coordination and control between massive electrical equipment requires low communication time delay, and the 10 millisecond communication time delay of 5G can well meet the frequency modulation requirements of the second level.

In the era of big data, collecting massive and diversified data is the basis of big data analysis.Although a large number of sensors have been installed in the traditional power system, many data only retain the most basic information due to the communication pressure. The lack of fine-grained information greatly restricts the practical application of big data analysis in the power system.5G, with its high communication rate, can realize the timely collection of massive electricity data, even including some fine-grained household equipment electricity data, making it possible to collect data at the level of second or even finer.This can also provide a solid data foundation for big data analysis of electricity consumption, construction of power user behavior model, promotion of extensive user interaction, and support the construction of intelligent measurement system.

Mass measurement data acquisition is mainly oriented to structural data such as electricity volume.In the ubiquitous power Internet of things, a large amount of unstructured data such as voice and video are also needed to realize a full range of distribution network perception and better personalized service.5G also provides the possibility of unstructured data acquisition.

In terms of the monitoring of the operation state of the power network, the current monitoring object is mainly the transmission network, and the monitoring of the distribution network is less.5G communication costs less than optical fiber communication and can also ensure the reliability and real-time of communication.As long as sensor units are installed at different nodes of the distribution network, power grid enterprises can perceive the operation state of the distribution network in real time, providing support for topology identification, power flow analysis, parameter estimation, etc.

In terms of power equipment status monitoring, the healthy operation of transformers, distribution lines and other electrical equipment is an important guarantee for the operation of the whole distribution system.After 5G is applied, in addition to detecting the running state of high-voltage equipment, massive power equipment in the distribution network can also realize information interconnection.Power grid enterprises can monitor various parameters of power equipment in real time, perceive the change of external environment (such as temperature), and help dispatching decision makers to comprehensively analyze and evaluate the running state of power equipment.

In addition, in terms of video remote monitoring, 5G can transmit corresponding video communication at a high rate to optimize the experience of decision makers.

To provide better solutions for ubiquitous power Internet of things

The construction of ubiquitous power Internet of things requires the communication network to have a strong bearing capacity and strong network frame at the core layer, as well as extensive and flexible edge access capacity at the access layer, so as to meet the access requirements of data collection and application everywhere.5G can provide a better wireless communication solution for the development of ubiquitous power Internet of things and bring better prospects.

State grid information and communication industry group co., ltd. has carried out analysis and research on the application of 5G wireless communication technology in the power industry.Based on the construction requirements of ubiquitous power Internet of things, research and exploration on 5G innovative application of differential protection, electricity information collection, mobile operation, comprehensive video monitoring, virtual power plant and other businesses are being carried out, and the customized research and development and system integration of power information and communication products supporting 5G are also being promoted step by step.

In the era of 5G, power and information will be better connected, and the ubiquitous power Internet of things will glow with more vitality.In the future, 5G will push the power grid to achieve high-quality development, improve service level, expand new business and new models, and comprehensively improve the capacity of ubiquitous power Internet of things to realize holographic perception, ubiquitous connection, open sharing and integrated innovation.The feasibility of 5G carrying power business will be further expanded to inject strong momentum into the ubiquitous power Internet of things construction.(source: state grid news)