Hohhot Pumped Storage Power Station

A grid regulator for load balancing, frequency modulation, and condensing. It serves as well as an emergency reserve to ensure the safe, economic and stable operation of the power grid.

The lowest temperature at the project site is -41.8 °C, which makes the freeze-breaking temperature of panels impervious layer as low as -45 °C. The mix structure that features the roller compacted concrete outside and the conventional concrete inside has greatly improved the frost-and-crack-resistant performance of RCC gravity dam.

New technologies had to be deployed, including an intelligent spraying cooling system for asphalt concrete panels, a intelligent self-flow water replenishment system for reservoir, full-digital industrial TV system for the power station, and an intelligent integrated control cabinet for GIS equipment.

The project also designed a high-pressure steel bifurcation pipe that boasts an internal water pressure of 9.06 MPa and a HD value of 4140mm, which is the largest in China, and for the first time made of domestic high-strength steel of 790 MPa grade.

This project was granted 19 patents and won 17 provincial level or ministerial level awards in consulting, scientific and technological progress, and excellent engineering survey and design. It has filled the technical gap in this field, representing a state-of-the-art technology for the industry.