Главна колекција / Main Collection: Recent submissions
Now showing items 121-131 of 131
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A Novel Procedure for Quick Design of Off-Grid PV Water Pumping Systems for Irrigation
(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 ... -
Eliminating the effect of hot spots on underground power cables using cool pavements
(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
(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 ... -
A transient thermal model for flat-plate photovoltaic systems and its experimental validation
(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 ... -
A thermal model for open-rack mounted photovoltaic modules based on empirical correlations for natural and forced convection
(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 ... -
Modelling the thermal effect of solar radiation on the ampacity of a low voltage underground cable
(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 ... -
Controlling the thermal environment of underground cable lines using the pavement surface radiation properties
(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 ... -
AN ALTERNATIVE METHOD OF INCREASING THE TRANSMISSION PERFORMANCE OF A CONVENTIONAL 110 kV CABLE LINE
(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 ... -
THE EFFECT OF DIFFERENT SKY TEMPERATURE MODELS ON THE ACCURACY IN THE ESTIMATION OF THE PERFORMANCE OF A PHOTOVOLTAIC MODULE
(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, ... -
Optimising the thermal environment and the ampacity of underground power cables using the gravitational search algorithm
(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, ... -
INCREASING THE AMPACITY OF UNDERGROUND POWER CABLES BY AN APPLICATION OF PHOTOVOLTAIC PAVEMENTS
(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 ...