10 MW Ozerna solar station for RES in Ukraine

This spring, RENTECHNO team commissioned the Ozernaya solar power plant in the Lviv region. The main task of the installation is to generate electricity of about 11,000,000 kWh per year from solar radiation and to sell into the national grid on the green tariff. The work we did consisted of several steps:

  • Consulting
  • Feasibility study
  • Pre-design surveys
  • Engineering and design (PV, LV, MV)
  • Procurement (inverters, monitoring system, cables, connectors, mounting structures etc);
  • Commissioning
  • Licensing and green tariff support

Solar power station planning and design

The uneven slope of the construction site, as well as the variable relief with a height difference of more than 40 meters, became one of the main features of the power plant. Its location on a complex plot of about 20 hectares required careful consideration of all details. It was important to take into account that bearing metalworks for the installation of solar panels will be installed in places with various angles of slope. Our experts have chosen an angle of slope of solar batteries, which ensures optimal absorption of solar radiation. The corresponding interrow distance chose so to prevent mutual shading among separate arrays of solar batteries.

We made all the necessary calculations and successfully designed the solar power plant. We had to divide the whole territory into separate sections we projected 10 solar power plants, where each had its master plan, inverter circuit diagrams, unique cable networks etc. This is the second experience of our group of companies in the planning of solar power stations in topologically difficult areas. The first object with complex topology was the Tsekinivka-2 ground solar power station.

Also, when designing the Ozerna power plant, we were confronted with the strong heterogeneity of the soils, as engineer-geodesical and engineer-geological researches showed. This geological planning works partially removed the topsoil layer that prevented the soil from crawling down on the slope. This meant that different types of pile foundations (4 types) had to use for the installation of supporting metal structures. The project also provided two-layer bearing structures with portrait orientation of solar panels. Moreover, a new approach tested at some sites; this is a four-layer construction with landscape orientation of solar photoelectric modules.

Equipment and components

The RENTECHNO Group of Companies purchased and supplied imported equipment and components for Ozernaya Station. 37.5 thousand polycrystalline silicon solar modules were purchased. Besides, we have designed and delivered 60 kW high-tech SMA power inverters, which are one of the most modern and effective devices in their category. All equipment was delivered to the construction site, including Germany-manufactured direct-current interconnection electric shields.

We know how to provide projects of any capacity with the highest quality solar power equipment with the most attractive supply conditions.

Starting-up and debugging the station

Despite the rainy season and the complexity of the weather, the speed at which construction and assembly work was completed can be called a record, especially for such a large-scale project. Our engineers performed the entire set of commissioning work, which included the preparation for industrial operation of the inverters and the performance of setting parameters, as well as training staff who will service the station.

Starting-up and adjustment works conducted by our specialists together with a group of German engineers from SMA Solar Technology AG Company. SMA-manufactured network inverters installed as the station equipment. Our group of companies has a long and fruitful story of cooperation with SMA Solar Technology Company, using their equipment for project implementation since 2012.

***

AVENSTON began its activities in 2007 under the SolarUA brand. At that time, the company was engaged in the production of photovoltaic components as part of investment projects in Ukraine and the USA. Subsequently, RENTECHNO founded in 2010 to implement the general contracting of solar energy facilities. Following the adoption of the Green Tariff Law in 2011, RENTECHNO focused on industrial solar PV projects (2012). Expanding its activities by systematically supplying solar power equipment, RENTECHNO PRIME formed. When the real solar energy BOOM began in 2018 the AVENSTON Energy Company set up, which was able to meet all the challenges of the market, combining the knowledge, experience, and skills of 10 years of work in the solar energy market of Ukraine.

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