Приказано Главна колекција / Main Collection за аутора "Klimenta, Dardan"
-
AN ALTERNATIVE METHOD OF INCREASING THE TRANSMISSION PERFORMANCE OF A CONVENTIONAL 110 kV CABLE LINE
Klimenta, Dardan; Tasić, Dragan; Jevtić, Miroljub (Journal of Energy Technology, 2019-11)The purpose of this paper is to show that a significant increase in the ampacity of a 110 kV underground cable line is achievable, if a hydronic asphalt pavement system is applied along the entire line, and if the cable ... -
Controlling the thermal environment of underground cable lines using the pavement surface radiation properties
Klimenta, Dardan; Perović, Bojan; Klimenta, Jelena; Jevtić, Milena; Milovanović, Miloš; Krstić, Ivan (IET Generation, Transmission & Distribution, 2018-05-03)The main purpose of this study is to show how the emissivity and absorptivity of a pavement surface aboveunderground cables affect their ampacity. The use of cool pavements whose surfaces absorb less heat ... -
The effect of aging of surface non-metallic coatings on the ampacity of medium voltage rectangular bus bars
Šućurović, Marko; Klimenta, Dardan; Raičević, Nebojša; Perović, Bojan (The 7th Virtual International Conference on Science, Technology and Management in Energy (eNergetics 2021), 2021-12)There are two major types of non-metallic coatings for bus bars: oil-and epoxy-based coatings. The oil-based coatings have a limited lifespan of a few years, while the epoxy-based ones have a lifespan of over ten years. ... -
THE EFFECT OF DIFFERENT SKY TEMPERATURE MODELS ON THE ACCURACY IN THE ESTIMATION OF THE PERFORMANCE OF A PHOTOVOLTAIC MODULE
Perović, Bojan; Klimenta, Dardan; Jevtić, Miroljub; Milovanović, Miloš (Technical University of Gabrovo, 2019-11-22)This paper considers the effect of different sky temperature models on the accuracy in the estimation of the performance of an open-rack-mounted photovoltaic (PV) module. It is found that, for the same ambient conditions, ... -
The effect of solar radiation on the ampacity of an underground cable with XLPE insulation
Klimenta, Dardan; Jevtić, Miroljub; Klimenta, Jelena; Perović, Bojan (The 4th Virtual International Conference on Science, Technology and Management in Energy (eNergetics 2018), 2018-10)The main purpose of this paper is to quantify the thermal effect of solar radiation on the ampacity of a low voltage underground cable with cross-linked polyethylene (XLPE) insulation. The quantification was performed for ... -
Eliminating the effect of hot spots on underground power cables using cool pavements
Klimenta, Dardan; Tasić, Dragan; Perović, Bojan; Klimenta, Jelena; Milovanović, Miloš; Anđelković, Ljiljana (Electrical Engineering, 2019-10-24)It is well known that hot spots limit the ampacities of underground power cables. There are many commonly applied methods to control the thermal environment in hot spots of underground power cables. However, applications ... -
GA-based approach for optimal placement and sizing of passive power filters to reduce harmonics in distorted radial distribution systems
Milovanović, Miloš; Radosavljević, Jordan; Klimenta, Dardan; Perović, Bojan (Electrical Engineering, 2019-09)This paper presents a Genetic Algorithm-based approach for optimal placement and sizing of passive power filters to mitigate harmonics in radial distribution systems with linear and nonlinear loads. The problem is formulated ... -
Increasing the ampacity of underground cable lines by optimising the thermal environment and design parameters for cable crossings
Perović, Bojan; Klimenta, Dardan; Tasić, Dragan; Raičević, Nebojša; Milovanović, Miloš; Tomović, Milan; Vukašinović, Jovan (IET Generation, Transmission & Distribution, 2022-02-28)The problem of optimising the thermal environment and design parameters of under-ground cable lines for cable crossings with the aim of increasing the ampacities of cablesis considered in this paper. Particle swarm ... -
INCREASING THE AMPACITY OF UNDERGROUND POWER CABLES BY AN APPLICATION OF PHOTOVOLTAIC PAVEMENTS
Klimenta, Dardan; Jevtić, Miroljub; Klimenta, Jelena; Perović, Bojan (2018-10)This article shows that a significant increase in the ampacity of an underground cable line can be achieved, if a photovoltaic pavement in combination with a ventilation channel is applied along the entire length of the ... -
Increasing the ampacity of underground power cables by an application of photovoltaic pavements," The 6th International Conference on Renewable Electrical Power Sources
Klimenta, Dardan; Jevtić, Miroljub; Klimenta, Jelena; Perović, Bojan (The 6th International Conference on Renewable Electrical Power Sources "6th ICREPS", 2018-10)This article shows that a significant increase in the ampacity of an underground cable line can be achieved, if a photovoltaic pavement in combination with a ventilation channel is applied along the entire length of the ... -
Modelling the thermal effect of solar radiation on the ampacity of a low voltage underground cable
Klimenta, Dardan; Perović, Bojan; Klimenta, Jelena; Jevtić, Milena; Milovanović, Miloš; Krstić, Ivan (International Journal of Thermal Sciences, 2018-08)Compared with other underground cables, low voltage cables are most intensely heated by the sun due to the low laying depth. Accordingly, the main purpose of this paper is to show how the heat of solar radiation affects ... -
A Novel Procedure for Quick Design of Off-Grid PV Water Pumping Systems for Irrigation
Klimenta, Dardan; Lekić, Julijana; Arsić, Sanela; Tasić, Dragan; Krstić, Nikola; Radosavljević, Dragana (Elektronika ir Elektrotechnika, 2021-03)It is known that meteorological variables from meteorological online services can be used for the design of photovoltaic (PV) water pumping systems for irrigation. The software LORENTZ COMPASS in such a manner uses as ... -
Optimal power flow and prices in the electricity market using the hybrid PPSOGSA algorithm
Jevtić, Milena; Jevtić, Miroljub; Radosavljević, Jordan; Arsić, Sanela; Klimenta, Dardan (Conference: International Scientific Conference “UNITECH 2020” – Gabrovo, 2020-11)In this paper, the PPSOGSA algorithm is proposed to optimize the nodal prices and power flows transacted between the tiers of the supply chain (SC) in a deregulated electricity market. The hybrid PPSOGSA algorithm is a ... -
Optimising the thermal environment and the ampacity of underground power cables using the gravitational search algorithm
Perović, Bojan; Tasić, Dragan; Klimenta, Dardan; Radosavljević, Jordan; Jevtić, Miroljub; Milovanović, Miloš (The Institution of Engineering and Technology, 2018-01)This study takes into consideration a problem that commonly occurs at the design stage of underground cable lines and that relates to the manner of determining the optimal values for dimensions of cable trench and bedding, ... -
Phasor particle swarm optimization for solving problem of pricing in electricity market
Jevtić, Milena; Jevtić, Miroljub; Radosavljević, Jordan; Klimenta, Dardan; Arsić, Sanela (Conference: International Scientific Conference “UNITECH 2021” – Gabrovo, 2021-11)Minimization of fuel costs in thermal power plants by adjusting electric power outputs from generators represents important problem in power system operation and control. This problem affects also merit order and pricing ... -
A review on new methods for increasing the ampacity of underground power cables: Cool and photovoltaic pavements
Klimenta, Dardan; Jevtić, Miroljub; Klimenta, Jelena; Perović, Bojan (The 6th International Conference on Renewable Electrical Power Sources (6th ICREPS), Belgrade, Serbia, 2018-10)The introduction of cool and photovoltaic pavements in underground power cable engineering can contribute to reducing global warming and our dependency on fossil fuels. In this case, a cool or photovoltaic pavement would ... -
Thermal aging management for electricity distribution networks: FEM-based qualification of underground power cables
Klimenta, Jelena; Panić, Marija; Stojanović, Miodrag; Klimenta, Dardan; Milovanović, Miloš; Perović, Bojan (Thermal Science, 2022-03)It is well-known that there is no PLAN-DO-CHECK-ACT (PDCA) approach that is used by electricity distribution network operators and asset managers of power cable systems. Accordingly, this paper proposes a novel application ... -
A thermal model for open-rack mounted photovoltaic modules based on empirical correlations for natural and forced convection
Perović, Bojan; Klimenta, Dardan; Jevtić, Miroljub; Milovanović, Miloš (Thermal Science, 2019-01-12)This paper proposes a thermal model for calculating the temperature of open-rack mounted photovoltaic (PV) modules taking into account the meteorological conditions, position (i. e. the inclination of one PV module and the ... -
A transient thermal model for flat-plate photovoltaic systems and its experimental validation
Perović, Bojan; Klimenta, Dardan; Jevtić, Miroljub; Milovanović, Miloš (ELEKTRONIKA IR ELEKTROTECHNIKA, 2019-04)This paper describes a transient thermal model that accurately predicts the temperature of the open-rack mounted photovoltaic (PV) modules under varying atmospheric conditions. The PV module temperature is predicted by ...