The first unit of the largest hydropower station under construction in the Yellow River Basin was successfully hoisted.

Reporters learned from China National Energy Group Qinghai Company on the 27th.，On that day，The Yellow River Basin under construction by the company has the highest elevation.、Hydropower station with the largest installed capacity——The runner of the first unit of Maerdang Hydropower Station was successfully hoisted in place.，It opened the prelude to the general assembly of the largest installed hydro-generating units in the upper reaches of the Yellow River.。

The diameter of the turbine runner hoisted in place this time is 6..6 meters，High 3.1 meter，Total weight 158.5 tons，By the crown、The lower ring and 17 blades are assembled and welded.;When the runner is integrally processed in the factory，Multi-process centralized processing technology is adopted.，Complete the processing of all key parts at the same station，The dimensional accuracy and geometric tolerance requirements of the runner are strictly guaranteed.。

It is worth mentioning that the static balance of the turbine runner，High precision stress bar balancing process is used，A new method for balancing the runner is developed.，And that balance precision of the rotate wheel is improved.，But also improve that appearance quality of the rotating wheel.。Wang Yu, director of the preliminary work department of Maerdang Hydropower Station, said.，The hoisting of the runner is completed.，It means that Unit 5 has formally entered the stage of turbine assembly.，It laid a solid foundation for the first unit to be put into operation in March 2024.。

The runner of hydro-Generator is the heart of the whole turbine.，It is the core component of converting water energy into electric energy.，It is the prime mover of the electric energy generated by the hydro-Generator，Determines the flow capacity of the turbine、Hydraulic efficiency and stability of unit operation，After the unit is formally put into operation，The continuous flow of water will be converted into electricity and transmitted to millions of households.。

Maerdang Hydropower Station is located on the main stream of the Yellow River, about 5 kilometers upstream of Lajia Town, Maqin County, Guoluo Tibetan Autonomous Prefecture, Qinghai Province.，The average altitude is 3300 meters.，The total installed capacity of the power station is 2.32 million kilowatts，It is the first 10 million kilowatt class built by China National Energy Group in Qinghai.“Water, wind and light are abundant”Multi-energy Complementary Clean Energy Demonstration Base。After the base is put into operation，It is estimated that the annual average power generation is about 406.300 million kilowatt hours，It can save about 13 million tons of standard coal every year.，Reduce carbon dioxide emissions by about 34 million tons。(Qi Zengbei, Wang Yu and Chen Lin)

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