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Guangdong-Hong Kong-Macao Greater Bay Area DC back-to-back project was successfully put into operation

On March 29, 2022, the DC back-to-back project in Guangdong, Hong Kong and Macao Bay Area (hereinafter referred to as Guangzhou Project) which lasted 15 months was successfully put into operation.

The Guangzhou project put into operation this time adopts the new generation flexible DC transmission system of NR, including flexible DC protection & control, measurement, phase selection closing and opening devices, as well as flexible direct converter valve and other core equipment on the east side of Guangzhou.

The Guangzhou Project and the Greater Bay Area DC back-to-back Dongguan project under construction (hereinafter referred to as Dongguan project) are both important parts of the future grid construction in Guangdong.

The DC back-to-back series projects in Guangdong, Hong Kong and Macao Greater Bay Area have added a "firewall" to the power grid in the East and West of Greater Bay Area. After completion, it can further optimize the grid structure of Guangdong power grid, avoid large-scale power outage and ensure the power safety of Greater Bay Area.

At the same time, the project can fundamentally solve the problem of excessive short-circuit current of Guangdong power grid, reduce the risk of multiple DC connection points, lay a good foundation for the subsequent large-scale consumption of renewable energy, and help to achieve the goal of "carbon peaking and carbon neutralization".

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Since the implementation of the project, NR project team has deeply studied the special needs, operation and maintenance characteristics of back-to-back DC project, and has made scientific research on the overall system optimization of measurement control protection valve control full link delay, back-to-back DC asynchronous control, on-site efficient test of converter valve and its friendly power grid access performance. The safe and stable operation performance have been recognized by users. The overall supply of equipment in the east of Guangzhou also provides a strong guarantee for the smooth operation of this project.

The scheduled operation of the DC back-to-back Project in Guangdong, Hong Kong and Macao Greater Bay Area further highlights the leading level of NR in the field of flexible transmission, laying a good foundation for the commissioning and operation of subsequent Dongguan projects.

NR will continue to provide users with higher quality products and services, make more contributions to the development of  power industry.




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