Ahai Hydropower Station

The dam site of Ahai Hydropower Station is located in the middle reaches of Jinsha River at the junction of Yulong county (right bank) and Ninglang county (left bank) in Lijiang City, Yunnan Province. It is the fourth cascade of "one reservoir and eight levels" hydropower development plan for the middle reaches of Jinsha River recommended by the hydropower planning report for the middle reaches of Jinsha River organized by the former National Development Planning Commission. The project is a water conservancy and hydropower project with power generation as the main part and comprehensive utilization of flood control and irrigation as well.

Ahai Hydropower Station

Ahai Hydropower Station is the fourth cascade of the "one reservoir and eight levels" development scheme recommended by the hydropower planning report of the middle reaches of Jinsha River. The upstream is connected with Liyuan hydropower station, and the downstream is adjacent to Jin'anqiao Hydropower Station, which is one of the important power sources of Jinshajiang hydropower base. The maximum dam height of the project is 130m, the total storage capacity of the reservoir is 882 million cubic meters, and the effective storage capacity is 218 million cubic meters, with daily regulation capacity. The total installed capacity of the power station is 2 million KW, the average annual power generation is 8.877 billion kw · h, and the static investment is about 13.6 billion yuan.

survey

The dam site of Ahai Hydropower Station is located in the middle reaches of Jinsha River at the junction of Yulong county (right bank) and Ninglang county (left bank) in Lijiang City, Yunnan Province. It is the fourth cascade of "one reservoir and eight levels" hydropower development plan for the middle reaches of Jinsha River recommended by the hydropower planning report for the middle reaches of Jinsha River organized by the former National Development Planning Commission. The project is a water conservancy and hydropower project with power generation as the main part and comprehensive utilization of flood control and irrigation as well.

Power station hub

Ahai Hydropower Station is a large (1) first-class project, and the main permanent hydraulic structures are first-class buildings. The project is a water conservancy and hydropower project with power generation as the main part and comprehensive utilization of flood control and irrigation as well. The project is composed of concrete gravity dam, overflow surface outlet and stilling basin on the left bank, bottom outlet for flood discharge and sand flushing on the left bank, bottom outlet for sand discharge on the right bank, main and auxiliary power houses behind the dam, etc. The maximum dam height of the power station is 130m, the normal water level is 1504.00m, and the corresponding storage capacity is 806 million cubic meters; the dead water level is 1492.00m, the dead storage capacity is 700 million cubic meters, and the adjustable storage capacity is 106 million cubic meters, which belongs to the daily regulation reservoir. The total installed capacity of the power station is 2000 MW, and the average annual power generation is 8.877 billion kw · h, which is a first-class large (I) project. The total construction period of the project is 98 months, in which the impoundment time is in December of the seventh year, and the first unit generates electricity at the end of December of the seventh year. The static investment of the project is about 13.6 billion yuan.

Reservoir area of power station

After the completion of the dam, the reservoir capacity below the normal water level is 806 million cubic meters, the total capacity is 882 million cubic meters, and the regulation capacity is 238 million cubic meters. The reservoir has daily regulation performance. When the normal water level of Ahai Hydropower Station Reservoir is 1504m, the backwater length is about 75.3km. The inundation affects 4 counties and 9 townships (towns) in Liangshan Prefecture, Lijiang City and Diqing Prefecture of Sichuan and Yunnan provinces, including Muli County, Yulong County, Ninglang county and Shangri La County. According to the design results of pre feasibility study stage, the total area affected by reservoir inundation of Ahai Hydropower Station is 23.42 square kilometers, including 15.9 square kilometers of land area and 7.52 square kilometers of water area. The inundation affected 2655 mu of cultivated land, 2865 mu of protective forest land and 29431 mu of unused land, 34 villages and residential areas and 623 people in the inundated area.

After the formation of the reservoir, the available water surface is about 22.67 square kilometers. After the formation of the reservoir, the vast expanse of water and the same color of sky create good conditions for the development of local tourism.

The land acquisition for the construction of Ahai Hydropower Station involves Yulong County, Ninglang County, Shangri La County in Lijiang City, Yunnan Province, and Muli County in Liangshan Prefecture, Sichuan Province, including 2 provinces, 3 states (cities) and 4 counties. The land acquisition area for construction is wide and sparsely populated, mostly in high mountains and valleys, covering an area of 8424 mu of cultivated land and planning to move 2538 people. Compared with other hydropower stations of the same scale, Ahai Hydropower Station has unique development advantages. Ahai Hydropower Station construction land acquisition and resettlement planning report is the first large hydropower project resettlement planning report compiled in accordance with the regulations on land acquisition compensation and resettlement of large and medium sized water conservancy and hydropower projects (State Council Order No. 471) and the 2007 edition of "code for planning and design of land acquisition and resettlement of hydropower projects". It is the first resettlement planning report for large and medium sized hydropower projects in China The work provides and accumulates valuable experience. Resettlement compensation is also the first large-scale power station in China to implement long-term compensation. In the implementation stage, the long-term compensation policy for resettlement will be deeply studied and improved, which is of great significance to the research and formulation of resettlement policy for large and medium-sized hydropower projects.

Power station traffic

The distance between the dam site and Lijiang City, Kunming City and Panzhihua City is 130km, 636km and 299KM respectively. The east line of the project has been connected to Geliping and connected to Chengdu Kunming railway through Panzhihua Geliping branch line; the south line has been connected to Dali and the Dali Lijiang railway has started construction and is planned to be completed in 2008.

The left bank of Ahai Hydropower Station is Ninglang County, and the right bank is Yulong County. The traffic status of the left bank from Ninglang county to the dam site is as follows: 32km from Ninglang county to Hongqiao Township, which is a class IV Highway; 22km from Hongqiao township to Cuiyu Township, which is a substandard highway with elastic stone pavement; 19.2km from Cuiyu township to Kuzhi village, which is a simple highway, which is the external traffic auxiliary line of the power station.

Benefit of power station

The scale of Ahai Hydropower Station is moderate, the reservoir inundation is small, and there are no restrictive environmental factors in the preliminary analysis. China has mature experience in the construction of similar hydropower projects, and has the conditions to speed up the development. It is an important resource station to cultivate hydropower as the main power pillar industry in Yunnan Province. The construction of Ahai Hydropower Station not only has significant power generation benefits and promotes the development of cascade hydropower stations in the middle reaches of Jinsha River, but also has good comprehensive benefits. The construction of the power station will bring very significant social benefits to the western region of China, especially to the economically backward minority areas of Yunnan Province, which is the concrete embodiment of the implementation of the party and the state's inclination to the western region. It is necessary to build Ahai Hydropower Station as soon as possible.

The total installed capacity of Ahai Hydropower Station is 2 million KW, the guaranteed output is 914000 kW, and the average annual power generation is 8.992 billion kw · h. It is a super large hydropower station with large installed capacity, high guaranteed output and good power quality. After completion, it not only has significant compensation benefits for hydropower stations in Yunnan Province, but also has the location advantage of power transmission to the State Grid and China Southern Power Grid. Through the analysis and calculation of the national economic evaluation index of Ahai Hydropower Project, the economic internal rate of return is 8.98%, which is higher than the social discount rate of 8%. The project is economic and reasonable, and the electricity price has certain competitiveness and anti risk ability. Ahai Hydropower Station can replace thermal power, reduce coal consumption and greenhouse gas emissions, which is conducive to environmental protection. The completion of Ahai Hydropower Project will become an important power supply point of "west to East power transmission" in Yunnan Province.

With the sustainable development of global economy, energy, as a basic element of social development, has been paid more and more attention by all countries. The demand for social production and living electricity is growing at an alarming rate. Human society is inseparable from electric energy. Electric energy has become a lifeline in the era of civilization. In order to build Yunnan into a strong province with green economy and make full use of its own advantages to develop cheap, high-quality and environmental friendly hydropower energy, it is not only the need of the strategy of prospering Yunnan, but also the need of realizing the strategic project of "power transmission from west to East".

As the undertaker of the design work of Ahai Hydropower Station, Kunming survey, design and Research Institute of China Hydropower Consulting Group, under the coordination and organization of the superior competent department and the owner, gives full play to the overall advantages of human resources, technology and equipment resources, and makes every effort to complete the survey, design and scientific research work of the hydropower station with high quality. During this period, the designers fully grasped and used the advanced, practical and economic technical resources at home and abroad, based on a high starting point, used new scientific and technological achievements, with the help of Chinese and foreign experience, learned from others' strong points, and carefully designed to make silent contributions to the construction of this large-scale, significant benefit and many characteristics hydropower station.

The turbulent River remains the same, and the grand blueprint has been launched. The construction of Ahai Hydropower Project is not the conquest of nature and Jinsha River by human beings, but the generous favor given by Jinsha River and the friendly demand from nature by human beings. Ahai Hydropower Project is a great witness of the harmonious development of man and nature. "Ahai", a bright pearl on the Jinsha River, is bound to add a brilliant page to the grand cause of building a moderately prosperous society in an all-round way.

History of power station

In the ancient Hengduan Mountains, there are three big rivers running in parallel. The two big rivers in the West flow southward. Only the one in the East stubbornly turns a 270 degree bend, and all the way eastward, crosses the land of China for 6300 kilometers, and finally joins the East China Sea. This big river is the upper reaches of the Yangtze River, the Jinsha River.

Jinsha River originates from the northern foot of Tanggula Mountain in Qinghai Province. It flows through the Qinghai Tibet Plateau, Hengduan Mountain longitudinal valley and Yunnan Guizhou Plateau. To the south of 30 ° N and below Batang, Jinsha River enters Hengduan Mountain fold belt. The basin is a long and narrow north-south belt. The river passes through the high mountains and narrow valleys with large gradient, deep undercutting and rapid flow. About 40 km later, Jinsha river suddenly turns north from shigu,

Chinese PinYin : A Hai Shui Dian Zhan