China News Agency, Guangzhou, May 25 (Wang Hua Shendian) The Guangdong-Hong Kong-Macao Greater Bay Area DC back-to-back power grid project was officially put into operation on May 25. The project applies the world's most advanced flexible DC technology to connect the Guangdong-Hong Kong-Macao Greater Bay Area. A large power grid is decomposed into multiple regional power grids, and there are firewalls between them to avoid large-scale power outages caused by failures.
The Dongguan project of the DC back-to-back power grid in the Guangdong-Hong Kong-Macao Greater Bay Area in the dark.
Shen Shen
The DC back-to-back power grid project in the Guangdong-Hong Kong-Macao Greater Bay Area is mainly divided into two parts: the Guangzhou project, which is connected to the regional power grid in the northwest of Zhuhai and the regional power grid in the northeast of Zhuhai;
After the completion of the project, within the Greater Bay Area, the originally connected large power grid will be decomposed into multiple small regional power grids, which can be operated in different regions and support each other. In the event of a serious fault, they can be quickly isolated and the power outage can be controlled in small areas. It can also absorb and utilize clean energy such as wind and solar energy on a larger scale.
"This is the first time in the world that the complex structure of the power grid has been reasonably partitioned and interconnected flexibly, which has greatly improved the security and stability of the Guangdong-Hong Kong-Macao Greater Bay Area power grid." said Rao Hong, academician of the Chinese Academy of Engineering and chief scientist of China Southern Power Grid.
The staff of China Southern Power Grid Guangdong Guangzhou Power Supply Bureau inspected the switch and knife switch equipment of the project.
Shen Shen
According to reports, after the completion of the Guangdong target grid project represented by the Guangdong-Hong Kong-Macao Greater Bay Area DC back-to-back power grid project, it will fundamentally resolve the three major problems of the Guangdong power grid’s short-circuit current exceeding the standard, the risk of multiple DC drop points, and large-scale power outages, and significantly improve Guangdong power grid power supply and configuration capacity.
Pang Peng, general manager of the Guangdong Power Grid Infrastructure Department of China Southern Power Grid, said that according to estimates, after the series of projects marked by the Guangdong-Hong Kong-Macao Greater Bay Area DC back-to-back power grid project are all put into operation, the power supply capacity of the Guangdong-Hong Kong-Macao Greater Bay Area will increase by 80%.
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