Flexible DC transmission or change the development pattern of power grid

On September 3, 2013, AORC-CIGRE (International Large Power Grid Committee Asia-Pacific Regional Council Technology Conference) was held in Guangzhou. Experts, scholars and engineers from power companies, institutes, and societies at home and abroad participated in the conference, and a three-day discussion on promoting international power generation, high-voltage power transmission, smart grid, and energy sustainability was held.

It is understood that CIGRE, established in 1921 as a permanent, non-profit international academic organization, held its first meeting in China this year. As the organizer of the conference, Zhao Jianguo, chairman of China Southern Power Grid Corporation, said at the meeting that Southnet attaches great importance to scientific and technological innovation, focuses on advanced computer control technology, and upgrades the existing power grid. The ultimate goal is to continuously improve the safety of the power grid. Sex, economy, energy conservation and environmental protection level, and improve the level of service to customers, which is South Net understanding of the smart grid. He pointed out that Nanfang has continuously worked hard on the three core technologies of safe and stable power grid operation and control technology, power grid economic operation technology, systems and new equipment integrated application technologies, and has obtained a number of scientific and technological achievements that are advanced internationally and have independent intellectual property rights. The completion of the world’s first ±800 kV UHV DC transmission project marks Nanfang’s leading position in the global HVDC transmission field.

Rao Hong, Dean of South China Electric Power Research Institute, also introduced in the theme report that flexible HVDC transmission is an important equipment for building intelligent power grids. Compared with traditional methods, flexible HVDC power transmission in isolated islands and the expansion of urban distribution networks The transformation, exchange system interconnection, large-scale wind farms and other aspects of the network have strong technical advantages, therefore, will be a strategic choice to change the development pattern of the large power grid. In the next step, flexible DC technology will also face the challenges of how to achieve high voltage, high power, overhead line use, hybrid structure of HVDC transmission, etc. South Net will also get further research and pilots to make this technology available in more fields. application.