Recently, it was learned that in the first half of this year, the Southern Power Grid completed the "14th Five-Year Plan" new energy installed capacity target of 100 million kilowatts one and a half years ahead of schedule.

Since the "14th Five-Year Plan", the installed capacity and power generation of new energy in the southern region have increased year by year, and the pace of green and low-carbon transformation of energy has accelerated. The Southern Power Grid Company proposed to build a key carrier of the digital power grid, actively explore the promotion of new energy systems and new power systems through digitalization and greening, closely combine the construction tasks of new power systems with the power grid development plan, strengthen the construction of cross-provincial and cross-regional transmission channels, and innovate and develop "reasonable zoning, flexible interconnection, safe and controllable, open and mutual assistance" large power grid routes, improve the flexibility and carrying capacity of the power grid, and optimize the allocation of clean energy resources with "large power grid + distributed smart grid". The "Southern Power Grid Plan" for the new power system has been constructed to achieve the complementary development of "electricity from afar" and "electricity from nearby", and promote the high-quality development of new energy.

"Wind and solar" development momentum is rapid

Distributed photovoltaic installed capacity has an average annual growth rate of 43%

On March 4, the daily power generation of new energy in the five southern provinces and regions exceeded 1 billion kWh for the first time, accounting for 25.7% of the total power generation on that day, which means that 1 kWh of every 4 kWh of electricity comes from new energy. In recent years, China Southern Power Grid has promoted the "all-out opening, all-integration, and quick integration" of new energy, and fully supported and served the accelerated development of new energy.

In the southern region, photovoltaic power generation has shown a synchronous development of centralized and distributed power generation, and the explosive growth trend of distributed photovoltaic power generation has become increasingly apparent. Since the "14th Five-Year Plan", the installed capacity of distributed photovoltaic power generation in the southern region has exceeded 30 million kilowatts, with an average annual growth rate of 43%. In the first half of this year, the installed capacity of wind power in the southern region exceeded 53 million kilowatts.

Recently, the Yangjiang Sanshan Island offshore wind power flexible direct transmission project was approved. The project adopts a super-large-scale offshore wind power integrated sea-land DC transmission technology solution, which will solve the problem of large-scale and deep sea wind transmission from the source, and transmit Yangjiang Sanshan Island offshore wind power to the Guangdong-Hong Kong-Macao Greater Bay Area.

The relevant person in charge of the Planning Department of China Southern Power Grid Co., Ltd. said that offshore wind power in the five southern provinces and regions will continue to develop in a large-scale and intensive manner, with unified planning and construction, and offshore wind power will play an important role in the new energy system. Doing a good job in offshore wind power system planning, project construction and scientific and technological innovation has been included in the company's important topics.

Out-of-region clean energy power has become an important incremental power source, and a strong power grid provides strong support. China Southern Power Grid Co., Ltd. has built 19 "eight cross and ten straight" 500 kV and above voltage level west-to-east power transmission channels, of which 18 are located in Guangdong, and renewable energy accounts for more than 80% of the power transmission. The Guangdong target grid project has been fully completed, and the power mutual assistance capacity of the east and west of Guangdong Province has been increased from 4 million kilowatts to 10 million kilowatts, and the power supply capacity of the Guangdong-Hong Kong-Macao Greater Bay Area has been greatly increased by 80%.

The development momentum of "wind and solar" is rapid, and market-oriented means of consumption have solved the problem. China Southern Power Grid Co., Ltd. continues to build an inter-provincial power trading model of "agreement + market", promote the construction of auxiliary services such as peak load regulation, frequency regulation, and standby, and green power trading market, and promote a better combination of effective market and effective government.

Shorter cycle and higher frequency of cross-regional and cross-provincial power transactions also provide market-oriented means for the consumption of new energy on a larger scale. In July 2022, the southern regional power market started trial operation, giving clean energy companies more room to maneuver when dealing with the randomness, volatility, and intermittency of new energy power generation.

China Southern Power Grid Co., Ltd. uses regional spot to achieve large-scale adjustment and timely smooth out the fluctuations of new energy in the province. During the settlement trial operation in March 2024, Guangdong received an additional 9 million kilowatts during the peak load period, accounting for 1/4 of the channel capacity; Yunnan increased its transmission by 2.3 million kilowatts during the low load period and the period of large new energy generation, and the additional power transmission accounted for 7% of Yunnan's power transmission.

Promote diversified interaction

Explore the "Southern Power Grid Plan" of "Two Transformations to Promote Two Types"

The proportion of new energy and the penetration rate of power generation have gradually increased, which has brought profound impacts to the power system. How to build a new power system that is clean, low-carbon, safe, abundant, economical and efficient, coordinated in supply and demand, flexible and intelligent is becoming the key to supporting the development of new energy in my country.

With the digital grid as the key carrier, China Southern Power Grid Co., Ltd. insists on digital empowerment, builds digital infrastructure such as the whole-domain Internet of Things, the power grid management platform, and the Southern Power Grid Zhikan, gives full play to the role of "calculation element + computing power + algorithm", comprehensively promotes the digitalization of physical power grids and power grid management, and supports the access of massive entities and the operation of complex systems.

The construction and promotion of the cloud-edge fusion intelligent dispatching platform provide strong support for China Southern Power Grid Co., Ltd. to explore the coordinated optimization of source, grid, load and storage, promote the construction of an energy supply pattern with clean energy as the main body, and serve the realization of the "dual carbon" goals and high-quality economic and social development in the south. The company has developed the first domestic new energy multi-time and space scale accurate prediction platform, and carried out cutting-edge technology research such as platform combination prediction technology, error tracing and prediction evaluation technology; successfully launched the first domestic new energy power prediction value ecosystem cultivation plan, and settled nearly 30 domestic and foreign new energy prediction algorithm teams, successfully built a prediction value ecosystem in the southern region, and deployed and applied excellent algorithms.

While comprehensively promoting the construction of new power systems, China Southern Power Grid will focus on new elements of new power systems such as large-scale new energy grid connection, wind, solar, water, fire and storage multi-energy complementarity, electric vehicle vehicle-grid interaction, high-reliability urban distribution network and modern rural power grid, and create demonstration cases with different characteristics and levels according to local conditions with the support of supporting innovative projects.

Hainan Boao Near-Zero Carbon Demonstration Zone has started near-zero carbon operation, and all venues of the Boao Forum for Asia Annual Conference have achieved green electricity self-sufficiency; the first batch of 16 near-zero carbon demonstration zones have been accepted, and 8 demonstration zones including Liujing Power Supply Station of Nanning Power Supply Bureau of Guangxi Power Grid Company have obtained carbon neutrality certification... Since the "14th Five-Year Plan", China Southern Power Grid has vigorously promoted the construction of 35 new power system demonstration zones, selected 40 near-zero carbon demonstration zones of various types such as production office, business display, and social services in the company system, established a near-zero carbon management and evaluation mechanism, and formed a batch of replicable and popularizable construction plans.

Next, China Southern Power Grid will focus on promoting clean energy supply, creating key carriers of digital power grids, building a green interactive consumption model, accelerating the coordinated development of diversified energy storage, improving the power market system and mechanism, strengthening technological equipment and technological innovation, and strengthening the demonstration and leadership of point-to-surface combination, and continue to build the "Southern Power Grid Plan" for the new power system, and strive to build a new power system with the basic characteristics of "clean and low-carbon, safe and abundant, economic and efficient, coordinated supply and demand, flexible and intelligent" by 2025.