1Market demand scale analysis of China's power transmission and distribution and control equipment industry in 2017
At present, there are more than 2,000 enterprises engaged in the production and installation of high and low voltage switches and complete sets of equipment. According to the characteristics of China's transmission and distribution system, the market of high and low voltage switches and complete sets of equipment of 40.5kV and below voltage levels presents the characteristics of "large quantity and wide range", with many manufacturers and large market capacity. From the perspective of the competitive situation of the market, the competition between various manufacturers has made the field divided into the high-end market with high reliability, maintenance-free, high added value and the low-end market with low technical added value. Most of the electrical equipment of 40.5kV and below voltage level is conventional products, and the technical content is not high.

The construction of smart grid has put forward new technical requirements for high and low voltage switches and complete sets of equipment, requiring that the equipment can achieve intelligence, miniaturization and information technology, so that some production enterprises with technological innovation ability in the industry are in an advantageous position in the competition. The lack of new product research and development capabilities, engaged in simple production replication manufacturers will be phased out. The new generation of high and low voltage switches and complete sets of equipment used in smart grid are the key development direction of manufacturers.



2. Six applications of power transmission and transformation technology in smart grid
Power transmission and transformation technology is the general name of various technical measures in the normal operation of the power grid, such as voltage regulation, power transmission and so on. Smart grid, as the name suggests, is to make the power grid intelligent, mainly based on the development of power technology and computer technology. From the perspective of the construction of smart grid, smart grid, as the product of modern scientific and technological development and progress, is mainly based on the current high-speed communication network, the use of advanced equipment, control technology, measurement technology and decision-making system technology, so that the power grid can be better and safer for power supply, and then achieve the purpose of economic, environmental protection, reliable and stable operation.

The six applications of power transmission and transformation technology in smart grid are:

1. Quality optimization technology;

2. Energy conversion technology;

3. Uhv transmission technology;

4. Flexible transmission technology;

5. Intelligent sensing technology;

6. Smart devices and smart devices.