With the development of society, smart grid has gradually become an important infrastructure in modern society. Just like the changes brought to our lives by the Internet 20 years ago, the smart grid will bring more changes to our production and life. Some changes may be visible now, and some may not be visible now. However, it is certain that the smart grid can better serve urban and rural development. Smart grid can further enrich our urban service connotation, and make smart communities and smart homes easy to realize.

The smart grid promotes safer and more reliable power supply. Modern production and life are inseparable from electricity, and our requirements for safe and reliable supply of electricity will be higher and higher in the future. A strong and reliable power grid needs the common support of monitoring, dispatching control, operation maintenance and other links. The application of the key technologies of smart grid can realize the comprehensive monitoring, flexible control, convenient operation and maintenance of the grid, improve the self-healing ability of the grid, effectively avoid the interruption of power supply, and improve the reliability of power supply and the quality of user power supply.

The two-way interactive service system included in the smart grid can well realize the information interaction between the two sides. On the basis of providing users with electricity and energy services, it can provide value-added services to achieve intelligent power management and better participate in public municipal management. Users can monitor and control the energy consumption equipment through the intelligent community/building, realize the two-way interaction between residents' energy efficiency intelligent management and service, and provide users with safer, more reliable, better and more scientific electricity service. Residents can also feed back their own needs and suggestions through a two-way interactive service platform to improve community management.

The smart grid promotes the transformation of the industrial structure and helps the economy to achieve low-carbon and sustainable development. Through the information system platform extended to all kinds of users, intelligent power consumption management is realized, and users can master power consumption data in real time, greatly improving the level of energy efficiency management. During the construction of smart grid, grid enterprises, relevant equipment and service providers, scientific research institutions and other stakeholders will participate in the research and construction of smart grid. In this process, the new demand brought by the smart grid will guide relevant industries to achieve transformation and upgrading, while creating some new business opportunities and profit growth points.

To the east of Wuhan's outer ring road, a future science and technology city is being built. Here, smart grid is not only a demonstration project, but also a way of power supply and consumption in this satellite city.

"Based on the user information fed back by the power terminal, we can count the data of the user's power consumption, even gas and water consumption, which periods are the peak periods of power consumption, which regions prefer when to use power, and which electrical appliances are easier to use... Then we can make a comparative analysis, so that we can customize a set of power utilization scheme for users." Liu Fei, a senior engineer of Wuhan NARI, said, "This electricity scheme is implemented in the background. If you need it, the lights, TV and air conditioning have been turned on before you step into the house. If you have the habit of taking a bath first, let the system set to burn hot water first!"

Not only individual users can save electricity through the intelligent power use scheme, but also enterprises can ensure the stability of power use through the intelligent power use scheme.

Huawei Technologies Co., Ltd. is the first group of enterprises to settle in Wuhan Future Science and Technology City. For high-tech enterprises like Huawei, the reliability and stability of the power supply current will directly affect the qualification rate of products. "A small fluctuation in voltage or frequency may cause the entire production line to be scrapped." Zhang Aifang of Wuhan NARI Energy Saving Business Department said.

By monitoring the power supply in the plant area, the background will monitor the operation status of the power supply system in the plant area in real time, and automatically handle the power supply failure in a timely manner to constantly adjust the power supply, so as to ensure the stability of power consumption in the production line. This will also save a lot of expenses for manufacturing enterprises.
"Not only users, but also government power supply departments can benefit from these data." Zhang Aifang said that the user electricity information collected by the intelligent terminal can provide power dispatching reference for power supply departments, and can also monitor the power consumption in high energy consumption areas, providing a good basis for demand bargaining.

There is more than one future science and technology city project in China. Beijing, Tianjin and Guangzhou also have similar science and technology city projects. "We hope that through this open platform, more scientific and technological talents can be attracted to join in the research of smart grid. On the one hand, the Science and Technology City provides a template for smart city, on the other hand, it allows scientific and technological talents in the park to find inspiration in their life experience and explore a more humanistic technology and service model." Zhang Aifang said.

In the life and production scenarios, the application of smart grid focuses more on the development of modern service industry - exploring the back-end and providing efficient and energy-saving power planning.

Recently, the Ministry of Science and Technology of the People's Republic of China and the National Development and Reform Commission have included smart grid and UHV Phase I into the construction pilot of the "Twelfth Five Year Plan" National Major Innovation Base. The development prospect of smart grid is promising. With the gradual introduction of a series of national policies and measures and the in-depth promotion of smart grid construction of State Grid Corporation of China, smart grid is getting closer to our life. While looking forward to the "Chinese Dream", let's seize the historical opportunity of smart grid development to better serve the "beautiful China".