HYDROPOWER: HOW TO INCREASE EFFICIENCY – IT’S THAT SIMPLE!
At WWS Wasserkraft GmbH, we are always striving to maximize the efficiency and performance of hydropower plants. We know that renewable energies are the future and that hydropower plays a key role in sustainable energy generation. Yet, sometimes the path to optimizing performance is more complex than one might think – and the solution surprisingly simple.
An interesting incident from one of our projects impressively illustrates this. A third-party turbine that was already in operation wasn’t delivering the expected performance, so our team conducted an efficiency measurement on-site. Initially, we focused on every conceivable complex parameter: detailed turbine analyses, inspection of the generators, control of the governing systems, and extensive hydraulic modeling. We investigated pressure losses, cavitation phenomena, and even the slightest deviations in the plant geometry. The teams worked thoroughly, but the cause for the efficiency loss remained undiscovered.
When complexity makes it hard to see
The fascinating thing about this story is how quickly one can get lost in complexity, especially when it comes to technical challenges. Everyone on the team was searching for a high-tech error that was impacting power generation. However, the real problem’s origin was found elsewhere – in the very basics of hydropower.
It was only after an intense, fruitless search that the question arose: Had we even thoroughly checked the fundamental parameters of hydropower? The answer, so human and sometimes obvious, was no. We had focused on so many complex aspects that the most obvious measurements were neglected. Together with the client, we searched for and finally found the solution to this problem.
Key Factors: Water Flow and Head
The two fundamental parameters that determine a hydropower plant’s entire production output are water flow (discharge) and head (height difference). It turned out that, in this specific case, the actual water flow in the river deviated significantly from the initial assumptions, and the head was reduced due to deposits in the intake area. These basic principles of hydropower were the key factors contributing to the lower efficiency.
The diagram shows a gradual increase in volumetric flow from zero to approximately 3.5 [m³/s], followed by a rapid decrease to about 0.85 [m³/s].
After correcting the water flow and adjusting the head, the plant’s efficiency increased significantly. This case is an excellent example of how, in hydropower engineering, a return to the physical fundamentals is often crucial.
Our Conclusion for Your Hydropower Plant
This experience at WWS Wasserkraft GmbH shows us how important it is to consider not only the most complex, but also the most fundamental aspects when it comes to troubleshooting and efficiency optimization. We offer comprehensive consulting and expertise in all areas of hydropower, from planning and project development to the modernization and maintenance of hydropower plants.
Whether it’s about analyzing efficiency losses, optimizing existing plants, turbine repairs, generator maintenance, or planning new projects – we rely on a holistic approach. Trust in our experience if you want to boost the performance of your hydropower plant or install a new one.
You can find more information about our services in hydropower, plant optimization, renewable energy, and sustainable power generation at “Products”.
Have you had similar experiences in hydropower or do you have questions about your plant? Don’t hesitate to contact us.
