From now to the end of the 13th five year plan, the length of UHV construction lines and transformation (commutation) capacity of State Grid Corporation of China have reached 89000 km and 780 million KVA (kw) respectively. High intensity and large-scale power grid construction will run through the whole "13th five year plan" period.

According to Xinhua news agency, on November 2, the State Grid held a working meeting to study and implement the spirit of the Fifth Plenary Session of the 18th CPC Central Committee and the fourth quarter of 2015. Liu Zhenya, chairman of the State Grid and Secretary of the Party group, delivered a speech on "studying and implementing the spirit of the Fifth Plenary Session of the 18th CPC Central Committee, scientifically planning the development of the 13th five year plan and ensuring the completion of all tasks throughout the year".

The State Grid Corporation of China plans to fully complete the "four AC and four DC" and Jiuquan Hunan UHV DC projects incorporated into the national air pollution prevention and control action plan by 2017, form the eastern and Western UHV AC main grid in 2020, and build the synchronous networking project of eastern and Western power grids in 2025.

Liu Zhenya revealed that the investment of the State Grid hit a record high this year. The state has arranged a total investment of 128.1 billion yuan in the transformation and upgrading of new rural power networks and urban distribution network projects, and 50.8 billion yuan will be completed this year.

During the 13th Five Year Plan period, the State Grid needs to break through a number of core key technologies as soon as possible. For example, intercontinental UHV power transmission and transformation technology, UHV core equipment manufacturing and application technology in special environment, AC half wavelength transmission technology, ± 800 kV multi terminal flexible DC transmission technology, etc. As well as advanced control and protection technologies that adapt to complex grid structure and large-scale clean energy access, and self synchronization technologies such as wind power and photovoltaic power generation, based on the "Internet plus" smart power consumption key technology, large capacity, long life, low cost, high security new energy storage technology.

At the international energy change forum held on November 6, Liu Zhenya said that China has become the world's largest wind power country. The State Grid has become the grid with the largest access to wind power and the fastest growth of solar power generation in the world.

"At present, the cross regional transmission scale of the power grid is only 69 million KW, accounting for only 16% of the energy impact capacity. It is estimated that in 2020, the installed capacity of hydropower, wind power and solar power will reach 350 million, 240 million and 150 million KW respectively, which puts forward more urgent requirements for improving the resource allocation capacity of the power grid, "Liu Zhenya said.

He said that in terms of resources, technical equipment and economy, the conditions for accelerating the development of clean energy and building China's energy Internet have been met, "wind power and solar power will usher in a period of rapid development in the next five years".

Driven by the policy spring breeze, the development of domestic silicone rubber insulator industry is very optimistic.

Advantages of silica gel material for insulator:

1. Superior insulation and electrical properties of rubber materials

2, anti aging performance is super, generally outdoors use for more than 100 years.

3. Superior mechanical properties

4. Environmentally friendly and flame retardant, flame retardant grade UL94V-0

In the late 1980s, Tsinghua University developed multi-component RTV silicone rubber and began to use it on insulators in power grids in Tianjin and Henan Province; In the 1990s, China also began to develop one-component RTV silicone rubber, which was quickly popularized and applied because of its simple operation and excellent performance.

RTV silicone rubber antifouling flashover coating is generally composed of RTV silicone rubber (matrix material), filler (filler) and additives, which are modified by physical and chemical process through the interaction of various components and functional groups; It has good high and low temperature resistance, weather resistance, electrical insulation performance, excellent hydrophobicity and hydrophobic mobility, but its mechanical properties such as tensile strength and tear strength are poor, and its oil resistance, acid and alkali resistance are not enough.