Reversiblf Pump/Turbine: the Complement to Other Renewable Energies to Store Massively Electrical Power
Climate change concerns are prompting countries all over the world to massively increase the production of energy from renewable sources such as wind and solar. The difficulty with these renewable sources is that they cannot be predicted, and their output can vary dramatically in just a few minutes. So, the amount of wind mills and solar panels that can be connected to a grid is limited by the risks of instability that they induce on the power networks. In order to push up the limit of wind and solar power that can be connected to a given network, complementary power sources with high flexibility are necessary. Using thermal power plants for this purpose has significant drawbacks as their response time can be long, and frequent starts and stops lead to increased wear, reduced lifetime, and increased air pollution during the low efficiency start up phases. On the contrary, Hydro Pumped Storage Plants are an ideal complement, due to their very fast response capability, and their ability to store electrical power when baseload production exceeds the consumption on the grid, and to release this stored energy when the power demand is stronger. To answer these needs all over the world, fifteen reversible Pumped-storage plants (PSP) projects have been completed by Alstom between 1996 and 2007. Among those projects, eleven are located in Asia, including eight projects for the Chinese market. Most Pumped-storage plants are in the range of medium/high heads, which is covered by Centrifugal Pump/Turbines. Through numerous references, Alstom has developed and improved their hydraulic performances using both its knowledge of the Pump/Turbine hydraulic design, thanks to computational fluid dynamics calculations, as well as model testing in its laboratories. Mechanical aspects as well as Generator-Motor technology have also been carefully managed and developed to reach a high level of performance and availability. In the paper, we will present recent Alstom experience with new reversible Pumped-storage plants whose units cover a large net head range. For these projects, the main sites specificities and operating conditions requirements will be reminded. From the hydraulic point of view, we will present the recent product improvements that we achieved with the contribution of state-of-the-art CFD tools, A special attention will be paid to the runner that remains the key component which allows to reach the very high performance levels required for these projects. Simulation and model tests results will be used to illustrate those achievements. Finally, the PSP design and manufacturing capabilities of Alstom in China will be shortly described.
Pump Turbine renewable reversible Hydro Pumped Storage Plants store electrical power model tests
Philippe Gilson Jean -Bernard Houdeline Zhang Riyi
Alstom Hydro Tianjin ALSTOM Hydro Co., Ltd.
国际会议
三峡
英文
91-101
2008-10-01（万方平台首次上网日期，不代表论文的发表时间）