Fujian-Guangdong Interconnection Project Completed and Put into Production Guangdong and Fujian Provinces have realized mutual aid and emergency preparedness for power surplus

On September 30, the Fujian-Guangdong interconnection project was officially completed and put into operation, marking the first time that the power grids of Fujian and Guangdong provinces were interconnected
.
Through the Fujian-Guangdong interconnection project, Guangdong and Fujian provinces will promote power complementarity and mutual assistance, adjust surplus shortages, and can serve as backup and support each other in emergency situations, further improve power supply protection and emergency response capabilities under extreme conditions, and improve the ability of optimal allocation of power grid resources and the level of
economic operation.

The Fujian-Guangdong interconnection project, jointly invested and constructed by China Southern Power Grid Corporation and State Grid Corporation, is a key project of the national "14th Five-Year Plan" power plan, with a total investment of 3.
2 billion yuan, a transmission capacity of 2 million kilowatts, and a total length of 303 kilometers
.

Connectivity ensures a safe and reliable supply of electricity

Guangdong and Fujian provinces have rapid economic development and strong
demand for electricity.
It is estimated that by the end of the "14th Five-Year Plan", the maximum load of power grids in Guangdong and Fujian provinces will reach 180 million kilowatts and 55 million kilowatts
respectively.
During the 14th Five-Year Plan period, through the Fujian-Guangdong interconnection project, the power transmission and mutual assistance capacity of the two places will reach 2 million kilowatts, with the ability to adjust and complement different time dimensions such as intraday, monthly and seasonal
.

At the same time, the two provinces are located in the same typhoon-prone area on the southeast coast, and due to the difference in geographical location and surrounding environment, the two provinces are less
likely to be affected by natural disasters at the same time.
After the Fujian-Guangdong network, once faced with natural disasters such as typhoons, heavy rains, and floods, one party can urgently support the other party to reduce the risk of power grid operation and improve the ability to maintain power supply and emergency response to
accidents under extreme conditions.

"After the Fujian-Guangdong interconnection project is put into operation, the power grids of the two provinces can improve their emergency support capabilities when they are hit by natural disasters such as typhoons, improve the speed of disaster resistance and emergency repair, and reduce economic and social losses
.
" Li Qingjiang, general manager of the infrastructure department of China Southern Power Grid, said
.

"With the smooth operation of the Fujian-Guangdong interconnection project, the first power transaction of the Fujian-Guangdong interconnection project organized by us has also officially taken effect, and the surplus power from Fujian has been sent to Guangdong
for the first time.
" According to the relevant responsible personnel of the Guangzhou Electric Power Trading Center, on the eve of the project being put into operation, the Guangzhou Electric Power Trading Center has cooperated with the Beijing Electric Power Trading Center to carry out the first power trading of the Fujian-Guangdong interconnection project, which is organized and implemented by the General Dispatch of the Southern Power Grid and
the State Grid Dispatching Center.
The target of this transaction is the power supply during the trial operation of the Fujian-Guangdong network project, which lays a foundation
for the project to be put into operation as soon as possible and achieve efficiency.

The investment and construction of the project has also successfully promoted the economic development of more than 10 upstream and downstream industrial chains such as raw materials, electrical equipment and energy-using equipment, and driven the upstream and downstream industrial chains of energy equipment manufacturing worth about 1.
1 billion yuan, playing a role in stabilizing growth
.

Multi-energy complementarity promotes the green and low-carbon transformation of energy

Fujian is an important clean energy base on the southeast coast of China, and electricity has the conditions for
exporting to other provinces on the basis of self-balance.
Guangdong is a typical receiving end power grid, nearly 30% of the power needs to be imported from outside the province, the two networks are closely adjacent, and the power structure and power consumption characteristics are highly complementary
.
The commissioning of the Fujian-Guangdong interconnection project will further promote the green and low-carbon transformation of
energy in the two provinces.

"During the 14th Five-Year Plan period, through the Fujian-Guangdong network, the seasonal power transmission between the two places can reach 500,000 kilowatts to 1.
6 million kilowatts, which is equivalent to reducing the construction
of a large thermal power plant.
" Yang Yinguo, senior manager of the grid-connected and new energy management department of the Guangdong Power Grid Power Control Center of China Southern Power Grid, introduced
.

At present, new energy sources such as wind power in Guangdong and Fujian are developing rapidly
.
The interconnection of Fujian and Guangdong power grids has promoted the formation of a close-knit and larger-scale power grid platform, which can effectively promote the large-scale development and utilization of Fujian's clean energy and grid-connected consumption through the complementary and multi-energy complementarity of energy in a larger range of time and space and multi-energy complementarity and coordinated control of source, grid, load and storage, and at the same time, further expand the development of clean energy space in Guangdong and further optimize the energy structure of the Guangdong-Hong Kong-Macao Greater Bay Area and the economic zone on the west coast of the Taiwan Straits, which plays an important role
in building a clean, low-carbon, safe and efficient energy system.

In order to protect the green waters and mountains, China Southern Power Grid Corporation has always adhered to the ecological protection concept of "prevention first, prevention and control, adapting measures to local conditions, and ecological priority" in the process of project construction, taking greening as the direction, and implementing environmental protection and water and soil conservation measures for the whole line of tower foundation in accordance with "one tower, one map, one design" to minimize the impact
of project construction on the ecological environment.

Achieved multiple firsts in technological innovation

China's UHVDC transmission technology is internationally leading
.
The Fujian-Guangdong interconnection project fully absorbs and draws on the latest scientific and technological achievements in cutting-edge technologies such as UHVDC and flexible HVDC transmission, and achieves a localization rate of 100%
of important technologies.

During the construction of the project, the UAV was integrated with lidar, three-dimensional construction panoramic reproduction, AI recognition and other technologies, which improved the construction efficiency and the level of informatization and intelligence of infrastructure management, and effectively promoted the "zero defect" handover
of the project.

The project achieved several firsts in technological innovation: the first time to develop and apply a new 6-inch thyristor to build a large-capacity converter valve, reducing energy loss and valve hall floor space by 15%; For the first time, the new hybrid active filtering technology was developed and applied, and the harmonic filtering ability of the system was increased by more than 8 times; For the first time, dry-type flat-wave reactors were used in back-to-back converter stations, simplifying secondary wiring and reducing noise effects
at the source.
The project further promotes the technological innovation and development of the power grid and promotes a new round of upgrading and breakthroughs
in the power industry.
(Reporter Li Yajun)