| Autor: |
Vadym Makarov, Kseniya Rezvaya, Viktor Drankovskiy, Evgeniy Krupa |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
2019 IEEE 2nd Ukraine Conference on Electrical and Computer Engineering (UKRCON). |
| DOI: |
10.1109/ukrcon.2019.8879889 |
| Popis: |
The design and construction of high-head hydroelectric pumped storage power plant is an important task for hydropower. The scientifically grounded development of hydropower engineering is impossible without improving the technology of design new and modernization the existing units of the hydroelectric pumped storage power plant with the use of new methods for calculating the flow in the elements of the water passage. In this paper, the simulation of the spatial flow motion in the water passage of the low-speed pump-turbine ORO500-V-100 was carried out on the basis of two numerical calculation methods. Energy losses was detected in the elements and the energy balance was made up. As a result of the calculations by the method of averaged dimensionless parameters expected characteristics were received. There are the isolines of the hydraulic efficiency and the line of angles $\beta_{1}$ and $\alpha_{2}$, which characterizes the flow before and after the runner, on them. A further analysis of the energy balance showed that energy losses in the inlet of the water passage (spiral casing, stator and wicket gate) of the low-speed high-head pump-turbine are up to 62 % of total. Therefore, increasing the power characteristics of the pump-turbine is possible due to the modification of the inlet elements. The second variant of the geometry of the spiral casing, stator and wicket gate is proposed. The value of the total efficiency increased by 2 %. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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