What is smart grid?

Everyone is talking about the "smart grid" today, but who can say what is the "smart grid" and what is "smart"? What are the specific manifestations? Many people who have just come into contact with the concept of "smart grid" are not necessarily very clear. The industry experts of China Smart Grid Online have summarized and summed up this for everyone, so that the people concerned can understand the true meaning of the so-called "smart" of the smart grid.

What is called smart grid, there are many concepts on the Internet, and it is clearly explained as follows: The smart grid, also known as “grid 2.0”, is based on an integrated, high-speed two-way communication network, through advanced sensing. And measurement technology, advanced equipment technology, advanced control methods, and application of advanced decision support system technology to achieve the goals of reliable, safe, economical, efficient, environmentally friendly, and safe use of the power grid. Its main features include self-healing and incentives. And include users, defend against attacks, provide power quality that meets the needs of users in the 21st century, allow access to a variety of different forms of power generation, start the electricity market, and optimize the efficient operation of assets.

China Smart Grid Online gives a clear summary, the so-called "smart" mainly reflected in the following three aspects:

1. Flexible management of electricity production, transportation and use;

(1) Encourage and promote users to participate in the operation of the power system and manage real-time electricity prices, demand response so that users can modify their use and purchase of electricity, and gain economic benefits.

(2) Power production, transmission and users achieve efficient and win-win >> Power production can reduce capital expenditures and operating expenses Reduce or transfer peak power demand through demand management Energy production and energy efficiency of power production can be improved >> Grid companies reduce lines Reduce and reduce the inefficiency of the operation of peaking power plant >> The user's demand is a kind of manageable resources to help balance the supply and demand relationship and ensure the reliability of the system. Eliminating unstable renewable energy sources;

(1) UHV realizes ultra-long-distance transmission, establishes large-scale pit power plants, builds large-scale wind power and solar power stations in nuclear power plants, and (2) connects more power distributed power sources (small-scale new energy, combined heat and power, and power plants)

Energy storage (physical energy storage, chemical energy storage, etc.)

(3) Interconnection between power generation and energy storage devices of different capacities and voltage levels 3. Networked, informatized, and intelligent (1) The Chinese grid, which is more than a million kilometers away from the network, is the most wasteful network resource. The need to establish high-speed, two-way, real-time, integrated communication networks is the foundation for implementing a smart grid.

The establishment of a communications network can realize the self-healing ability and control ability of the smart grid and provide quality services.

(2) Informatization Advanced measurement technology ensures the acquisition and conversion of data into data information for use in all aspects of the smart grid, eliminating the use of electromagnetic meters and reading systems, and replacing them with smart solid-state meters for two-way communications to evaluate grid equipment. Health status (3) intelligently collecting data and monitoring grid components; analyzing data, diagnosing and resolving problems and executing automatic control actions; providing operational personnel with information and options. These are the places where smart grids can achieve “smart” through. The actual application level analysis and summary can truly understand what is a smart grid and understand what the “smart” smart grid is. It is hoped that the definition of "smart" in the smart grid that we have summarized can solve everyone's doubts about the "smart grid."