The share of renewable energies in the overall energy mix is rising rapidly worldwide. With three-fi gure growth rates, photovoltaics (PV) play a major role. According to market research organizations, the PV market grew by 139 percent in the year 2010. Germany is among the world‘s leaders in this technology that uses solar cells to convert sunlight straight into electrical energy.
In the future, large PV plants such as the Siemens solar farm that went into operation in 2011 in Le Mées, France, can be planned quickly and effi ciently using the PVplanet software solution. © Siemens AG
Yet the task of planning large-scale PV power plants spanning several square kilometers is a complex one. With customer specifi cations, regulations and government subsidy programs to consider, designers must also account for numerous other factors including weather, climate, topography and location. These factors, in turn, infl uence the selection and placement of the individual components which include the PV arrays with their solar modules, inverters and wiring, not to mention access roads. Until now, engineers have designed solar power plants using CAD programs, with every layout and every variation painstakingly generated separately. This is a very time-consuming approach. To improve a planned power plant in terms of certain criteria, or to compare different concepts with one another, oftentimes the entire planning process has to be repeated.
Several hundred plant designs at the push of a button
In the future, this approach will be improved considerably: researchers at the Fraunhofer Institute for Industrial Mathematics ITWM in Kaiserslautern, in collaboration with Siemens Energy Photovoltaics, have developed a new planning software that makes it possible to build solar power plants better and more quickly. “Our algorithms programmed exclusively for the Siemens PVplanet (PV Plant Engineering Toolbox) software provide engineers with several hundred different plant designs in a single operation. It takes less than a minute of computation time,“ ITWM researcher Dr. Ingmar Schüle points out. The only user inputs are parameters such as the topography of the construction site and the module and inverter types that will be used. The user can also change a number of parameters – such as the orientation, spacing and inclination of the solar arrays – to study the impact on the quality of the planning result.
Cost estimates and income calculations included
To evaluate the designed PV power plants, an income calculation is performed that includes a simulation of the weather in the region in question, the course of the sun throughout the year and the physical module performance including shading effects. With the results of this computation and an estimate of the investment and operating costs, the planning tool can come up with a fi gure for the LCOE (levelized cost of energy).
By comparing the plant with a large number of similar confi gurations, the planners can investigate the sensitivity of the various parameters to fi nd the right solution from a large array of options. “The software assists the expert with decisionmaking and helps with the design of the best possible PV power plant for the site involved. Which one is ‘best‘ depends on a number of aspects – from the customer’s objectives to the site and environmental conditions, but also on the fi nancing concept and the fi nancial incentives for photovoltaics in the target region. All of these criteria are taken into account.“ Schüle points out. Dr. Martin Bischoff, project manager at Siemens AG, Energy Sector, is also convinced of this approach: “Aside savings, more than anything else the planning tool provides an overview of the scope for optimization.
This provides the best possible support for planning the most cost-effi cient systems. There has been no other planning software with this scope or level of detail until now.“ Interested individuals can get an impression of the successful teamwork between ITWM and Siemens Energy Photovoltaics at the Intersolar Europe trade fair in Munich, June 13-15, 2012: the software celebrates its public premiere at the Siemens booth in Hall B4, Booth B4.380.
Dr. Ingmar Schüle | Fraunhofer Research News
Waste from paper and pulp industry supplies raw material for development of new redox flow batteries
12.10.2017 | Johannes Gutenberg-Universität Mainz
Low-cost battery from waste graphite
11.10.2017 | Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
20.10.2017 | Information Technology
20.10.2017 | Materials Sciences
20.10.2017 | Interdisciplinary Research