Strengthen the research and development of epoxy resin UHV "neck" supporting materials-Zhang Xin, deputy to the National People's Congress and chairman of TBEA

According to data, as of the end of last year, my country has 33 UHV AC and DC projects in operation and under construction, including 19 DC projects and 14 AC projects.
The new path of innovation has formed a relatively complete UHV equipment manufacturing system and enhanced my country's international voice in the UHV field.

Faced with the achievements in the industry, I feel both encouraged and urgent.
"China's UHV DC transmission field has achieved leapfrog development, thanks to the great attention and investment of the Party Central Committee, the State Council and the two major power grid companies in the research and development of UHV DC core technology and key products, enabling the production of core power equipment such as TBEA The company has made breakthroughs in the localization of a series of core components such as the DC bushing on the UHV converter variable valve side.
However, some core technologies and key equipment are still subject to com" href="http://">human coatings online coatingol.
com .
"During the two sessions of this year, the National People’s Congress representative Zhang Xin, chairman of TBEA, said in an interview with Securities Times.

In the past two years, the problem of getting stuck in the core technology fields such as chips has occurred frequently, which has made all walks of life more aware of the importance of mastering core technology in their own hands.
Zhang Xin said that, in fact, the key components of the UHV DC core also have "stuck necks".

"UHV DC bushings, outlet devices, on-load voltage regulating switches, IGBT power modules and other key components and supporting materials such as insulating paper, epoxy resin, and aluminum foil used to make bushing cores are still inadequate.

In addition to the dependence on imports of some components, there are also insufficient investment in research and development of key UHV DC core equipment, inadequate batch application mechanism of UHV DC core equipment in domestic production, and gaps in the supply of UHV complete sets of equipment and the construction of system integration capabilities.
Taking capital investment as an example, the scientific research expenses of tens of millions or even hundreds of millions of yuan have brought certain pressure on the current operation of the enterprise.

To this end, Zhang Xin suggested that the state should provide comprehensive policy support for the research and development of the first set of products in the UHV field and the localization of key components and materials for the "stuck neck".
These include strengthening investment in research and development, increasing tax incentives, establishing a fault-tolerant mechanism, and deepening the insurance compensation mechanism.

He also believes that the country should support the best and the strong, increase policy support and resource guarantees for the localization of leading companies in the industry; increase support for the demonstration and application of major localized equipment; and suggest that the country continue to strengthen the construction of UHV exchange projects.
Intensify the research and development of key UHV AC technologies and equipment.

Expansion: Application of epoxy resin in power equipment

In recent years, insulators with epoxy resin as the dielectric have been widely used in the power industry, such as epoxy casings, support insulators, contact boxes, insulating cylinders and poles made of epoxy resin on three-phase AC high-voltage switchgear.
Column etc.

Epoxy resin material has a series of outstanding advantages in organic insulating materials, such as high cohesion, strong adhesion, good flexibility, excellent thermal curing performance and stable chemical resistance.
High mechanical strength, strong arc resistance, high compactness, smooth surface, good cold resistance and good heat resistance, good electrical insulation properties, etc.
, are widely used in the power industry, mainly to support and Insulation.

Epoxy resin and additives are used at the same time to obtain application value.

Domestic companies currently engaged in the manufacture of epoxy insulating parts mainly include McGrady Audi, Zhenjiang Dangao, Zhejiang Leibosi, Hangzhou Shuguang, Xiamen Naide and other companies.