Technical FAQs 4

What is China's first 'wind-solar-thermal-storage integration' project?

(Photo by Xu Ke/People's Daily Online) China's first "wind-solar-thermal-storage integration" ultra-high voltage (UHV) project, the Longdong-Shandong ±800 kilovolt direct current (DC) transmission project, was put into operation on May 8.

What is the capacity planning model for wind-photovoltaic-pumped hydro storage energy base?

A two-layer capacity planning model for wind-photovoltaic-pumped hydro storage energy base. Three operational modes are introduced in the inner-layer optimization model. Constraints of pumped hydro storage and ultra-high voltage direct current lines are considered.

What are ultra-high-voltage direct current (UHVDC) transmission lines?

Ultra-high-voltage direct current (UHVDC) transmission lines, owing to their high capacity and long-distance delivery capabilities, are regarded as a critical means of channeling renewable energy across vast distances .

Does pumped hydro storage improve transmission stability and efficiency?

The case study shows that: (1) Integrated operation of wind and photovoltaic power with pumped hydro storage enhances transmission stability and efficiency, achieving a power supply guarantee rate over 90 % and curtailment rate below 15 %.

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Ultra-high voltage wind power storage

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