How to build an electric tower in the desert? China's first "Sagehuang" wind and solar power base external transmission ultra-high voltage project has started construction in Ningxia | Project | Sagehuang

Release time:Apr 13, 2024 21:30 PM

Yesterday, the construction of Ningxia ± 800 kV ultra-high voltage direct current transmission project, China's first wind and photovoltaic base for external power transmission in desert, Gobi, and desert areas, began.

Promote the grid connection and consumption of clean electricity in the "Sha Ge Huang" region

The total investment scale of the "Ningdian to Hunan" project is about 100 billion yuan. It starts from Zhongwei in Ningxia and passes through five provinces and one city, including Gansu, Shaanxi, Chongqing, Hubei, and Hunan. The total length of the line is 1634 kilometers. The project mainly transports green and clean electricity produced by clean energy such as solar and wind energy in desert, Gobi, and desert areas. It has become an innovative project for Ningxia to achieve the "dual carbon" goal, achieve high proportion and stable transmission of new energy, and a demonstration project to build a new power system and achieve large-scale optimization of new energy allocation.

It is understood that the total installed capacity of supporting power sources for the "Ningdian to Hunan" project is 17.64 million kilowatts, which will promote the external transmission capacity of the Ningxia power grid from 14 million kilowatts to 22 million kilowatts, and the installed capacity of new energy will exceed 50 million kilowatts, greatly promoting the on-site consumption and large-scale optimization of new energy allocation in Ningxia, fundamentally solving the problem of grid connected consumption of new energy in the central and southern regions of Ningxia. After the project is put into operation, it will increase the electricity consumption of Hunan by 36-40 billion kilowatt hours annually.

How to build an electric tower in the desert? China's first "Sagehuang" wind and solar power base external transmission ultra-high voltage project has started construction in Ningxia | Project | Sagehuang

Ecological management of "green protection lines" makes electric towers more secure

The "Ningdian to Hunan" project is the first major power channel in China that focuses on developing desert photovoltaics and transmitting new energy. So, what difficulties did the construction party encounter in the early planning and current construction process? How was it resolved?

The "Ningdian to Hunan" project has a total length of 1634 kilometers, with 261 kilometers in the Ningxia section. 68% of the lines pass through deserts, Gobi, and desert terrain, which means that some power towers need to be built in the "Sago Desert" area. The sparse vegetation and complex terrain in the area, combined with the invasion of sandstorms, pose a risk of tower collapse and threaten the safe and stable operation of transmission lines.

To solve this problem, the construction party drew on past experience in ultra-high voltage operation and maintenance management and launched the "Green Protection Line" plan.

Zhang Xiaobo, a technician from the Science and Technology Innovation Center of State Grid Ningxia Electric Power Ultra High Voltage Company: We consulted some forestry and sand control experts and transformed the sand dunes into fixed or semi fixed sand areas through grass grids. At the same time, we sowed some grass seeds in the grass grids and planted white lime seedlings and other plants, slowly restoring the vegetation environment of the channel.

"New energy+energy storage" ensures stable grid connected electricity

In addition, the engineering construction team also explores the "new energy+energy storage" technology to solve the problem of unstable new energy technology.

Zhang Shaobin, Deputy Director of the Customer Service Center of State Grid Ningxia Electric Power Zhongwei Power Supply Company: The size of wind power determines the efficiency of power generation. New energy generation is greatly affected by the natural environment, and its intermittency and volatility also pose higher requirements for the power grid.

In order to grasp the laws of new energy power generation, the Ningxia power department has increased scientific and technological research, developed and established an early warning system, and used artificial intelligence to process and analyze massive data to monitor the operation of new energy power in real time.

At the same time, in order to ensure the stable transmission of new energy electricity, Ningxia's power system continues to tackle the "new energy+energy storage" technology, providing strong support for engineering construction.

Zhang Huiling, Deputy Director of the Control Center of State Grid Ningxia Electric Power Co., Ltd.: Energy storage technology is actually like a power bank, which can store excess electrical energy and achieve fast charging and discharging when needed by the power grid. When it is difficult to consume new energy, we arrange for energy storage and charging; Discharge when there is insufficient power.

Guiding the right direction for promoting the development of the international human rights cause -- President Xi Jinping's congratulatory letter to the high-end forum on global human rights governance triggered a warm response to the high-end forum on global human rights governance

Xinhua News Agency, Beijing, June 14th, title: To guide the right direction for the development of international human rights -- President Xi Jinping's congratulatory letter to the Global Human Rights Governance High-end Forum triggered a warm response Xinhua News Agency reporter "China is willing to work with the international community to implement the Vienna Declaration The spirit of the" Program of Action "promotes the development of global human rights governance in a more fair, just, reasonable and inclusive direction, and promotes the construction of a community with a shared future world." On June 14, President Xi Jinping sent a congratulatory letter to the high-end forum on global human rights governance, which triggered a warm response from Chinese and foreign guests. They said that President Xi Jinping's congratulatory letter put forward China's propositions on the development of the international human rights cause and global human rights governance, and clarified China's vivid practice of implementing the spirit of the Vienna Declaration and Program of Action and respecting and protecting human rights.

Micro Video | Strengthening the Construction of an Education Strong Country, Comprehensively Improving Population Quality with High Quality | Population | Micro Video

June 11th is China Population Day. Population development is a major event related to the great rejuvenation of the Chinese nation. The first meeting of the 20th Central Financial and Economic Commission recently stressed that Chinese path to modernization should be supported by high-quality population development. The meeting proposed to regard the construction of an education strong country as a strategic project for high-quality population development, comprehensively improving the scientific and cultural quality, health quality, and ideological and moral quality of the population. High quality scientific and cultural supply is continuously improving the scientific and cultural literacy of the people. The report of the 20th National Congress of the Communist Party of China clearly proposes to "strengthen youth sports work". Rock climbing, baseball, running, ice sports... Sports activities are gradually being added to students' schedules and becoming an essential part of their learning and life. The 14th Five Year Plan for Cultural Development points out that improving families and schools

The overall stable operation of domestic prices - Interpretation of May CPI and PPI data month | year-on-year | Overall

Xinhua News Agency, Beijing, June 9th (Xinhua) -- The overall stability of domestic prices -- Interpretation of May CPI and PPI data. Xinhua News Agency reporters Wei Yukun and Han Jianuo released data on June 9th, showing that consumer demand continued to recover in May, with the national consumer price index rising by 0.2% year-on-year, an increase of 0.1 percentage points from the previous month; Excluding food and energy prices, the core CPI increased by 0.6% year-on-year, and the overall operation of domestic prices remained stable. In China's CPI basket of goods, food accounts for a relatively high proportion. In May, food prices increased by 1% year-on-year, an increase of 0.6 percentage points compared to the previous month. Among them, the prices of poultry, edible oil, and fresh fruits have increased by 5.6%, 3.6%, and 3.4% respectively, with all increases falling back; The price of pork has decreased from a 4% increase last month

The Construction of Modern Civilization of the Chinese Nation injects inexhaustible spiritual Power into the Promotion of Chinese-style Modernization-General Secretary Xi Jinping's important speech at the Symposium on Cultural inheritance and Development aroused strong repercussions in China | Chinese Civilization | General Secretary

Everyone said that on the new journey of comprehensively promoting the great rejuvenation of the Chinese nation, we should be firm in cultural self-confidence, take on the mission, and work hard to learn rich nutrition from the excellent traditional Chinese culture, refine and sublimate in the great practice of Chinese path to modernization, so that the Chinese civilization can glow with new vitality and vitality, and inject strong civilization nourishment and spiritual strength into the construction of a strong country and national rejuvenation. The cultural and national fortunes are intertwined, and the cultural context is connected to the national context.