Analysis of electric power production results in South Serbia: Recommendations for improvement of operation of first mini photovoltaic power plants

Abstract

Original scientific paper https://doi.org/10.2298/TSCI170531123M Solar radiation in Serbia is for about a third higher than in Middle Europe, which represents a very favorable energy potential. Southeast Serbia is a leading area in this aspect, since the annual average of daily global radiation on a horizontal surface exceeds 4.2 kWh/m 2 . This paper compares four photovoltaic power plants installed in southeastern Serbia. Analyzes are done based on results from two years of power plant exploitation. The power plants are not located in the same areathere are differences between topography and altitude of their locations, which is also taken into account during analyzes. Photovoltaic modules have different orientation and inclination toward horizontal surface, and their capacity varies from 30-40 kW. The conclusion provides recommendations for improvement of production where it is actually possible.RES. This goal was laid out through obligatory national sub-goals, which took into account different starting points of the member states [2]. Regarding solar energy, the White book of the EU from 1997, set a goal that by 2010 the total capacity of installed photovoltaic (PV) systems should reach 3 GW [3]. The predicted PV solar system capacity was reached earlier than planned and already by the end of 2008, the total capacity was 9.5 GW [4,5]. More than half of European PV power plants were installed in Germany, approximately 5.3 GW and about 1/3 in Spain. Since 2005, solar PV electricity generation capacity has increased from 1.9 GW in 2005 to 80.7 GW by the end of 2013, and the 2020 National Renewable Energy Action Plan (NREAP) target of 84.4 GW was exceeded, fig. 1, by the end of 2014, reaching about 88.4 GW [6]. Energy Law of the Republic of Serbia set the legal framework and the ability to use incentives in the production of electricity from renewable sources.

Modeling photovoltaic grid inter-shading

“…The total solar radiation is a sum of the direct, the diffuse and the ground reflected component of radiation. In this model the ground reflected component is insignificant because the location of the solar power plant is assumed to be in isolated rural areas [14][15][16][17][18][19][20][21].…”

Increasing Energy Efficiency of Buildings in Serbia—A Case of an Urban Neighborhood

“…The European Union has established a long-term mission of becoming climate neutral by 2050, which requires carrying out several measures that will decrease GHG emissions by at least 55% from 1990 levels by 2030 [11][12][13]. The Republic of Serbia, as a developing country and a candidate for membership in the European Union, is legally obligated to increase energy efficiency, increase the share of renewable energy sources (RES) in electricity production, and reduce greenhouse gas emissions in accordance with Directive 2009/28/EC [14,15]. Implementing renewable energy sources and energy efficiency measures provides an opportunity to diversify the nation's energy supply, create a sustainable energy source mix, and have a positive impact on employment and local development [16,17].…”