Looking at Future Development Direction of Power Grid from Sino-US Smart Grid

The so-called smart grid is an incisive summary of the future development direction of the power grid. That is, a large number of new technologies are applied in such areas as power generation, transmission, distribution, and power consumption, and eventually the optimized configuration of electricity, energy saving, and emission reduction are realized. At present, besides our country, the United States, Japan, and other countries have also introduced similar plans. The United States announced on April 16, 2010 a $4 billion smart grid technology investment plan.

The US smart grid definition has seven characteristics: self-healing, interaction, security, providing power quality that meets 21st century demand, adapting to all types of power sources, and storing energy, market-based transactions, optimizing grid assets, and improving operational efficiency.

The United States promotes smart grids. Its direct purpose is to drive the U.S. economy and contribute to the current financial crisis. There are numerous U.S. power companies, and the grid network grid tends to be stable, mature, and has adequate power transmission and distribution capabilities. The equipment is old and aging, and the grids have strong secondary equipment. There is already a part of distributed power supply. Therefore, in the planning of the smart grid, attention is paid to regional coordination, upgrading of the electricity market, power network infrastructure, access to distributed power sources, and two-way interaction between users, while maximizing the use of information technology and realizing the replacement of system intelligence with labor.

China's smart grid is defined as a strong smart grid that covers all aspects of power generation, dispatch, power transmission, distribution, and users. It is a closed-loop system. The State Grid Corporation of China is fully building a strong smart grid, that is, building a strong grid that uses the UHV grid as the backbone grid and coordinated development of all levels of grids, and realizes the informatization, digitization, automation, and interaction of the grid. It is safe and reliable in power supply. And on the basis of quality, we will further realize the goal of cleanliness, efficiency, and interaction.

China's smart grid should first be a strong grid, capable of realizing a wide range of optimal allocation of energy resources and ensuring safe and reliable power supply. The realization of the informatization, digitization, automation, and interaction of the power grid on the basis of a strong grid is the 'smart' meaning of a strong smart grid.

The construction of China's power grid intelligence has already been carried out long ago, but it is not just the smart name of 'Smart Grid'. At present, China's digital power grid construction can be regarded as the embryonic form of smart grid. At present, China's digital power grid construction covers all aspects of power generation, dispatch, power transmission, distribution and users. The components include: information platform, dispatch automation system, stability control system, flexible AC transmission, substation automation system, and microcomputer relay protection. , distribution network automation systems, power management acquisition systems.

Strong smart grid investment in smart will reach 66-68 billion yuan per year. In the process of smart grid construction in China, the market for advanced dispatching automation systems, flexible transmission, digital switches, digital transformers, distribution automation, and power consumption management acquisition systems will have huge room for growth.

The digital substation has a huge impact on the electrical equipment industry, which will lead to the reshuffle of the secondary equipment industry, transformer industry, and even the switch industry. The IEC 61850 connection will promote the cooperation and penetration of primary and secondary equipment companies and new acquisition opportunities. Will produce.

State Grid Corporation's strong smart grid is divided into three steps: 1 During the pilot period from 2009 to 2010, the company will focus on the development of a strong smart grid development plan, formulate technical and management standards, carry out key technology research and development, equipment development and pilot work in all aspects. Significant benefits to the listed companies are TBEA, Pinggao Electric, Tianwei Baoji, Guodian NARI, Siyuan Electric, Rongxin, Kelu Electronics. 2 From 2011 to 2015, it is an all-round construction phase. It will accelerate the construction of the UHV synchronous grid in North China, East China, and Central China, and will initially form a smart grid operation control and interactive service system. Key technologies and equipment will achieve major breakthroughs and applications. Significant benefits to the listed companies include TBEA, Pinggao Electric, Tianwei Baoji, Guodian NARI, Siyuan Electric, Rongxin, Kelu Electronics, Xuji Electric, Guodian Nanzi, Changyuan Group and Dongfang Electronics. 3 From 2016 to 2020, it is to lead the upgrade phase and build a unified and strong smart grid. The technology and equipment have reached the international advanced level.