Browsing by Author "Jaralikar, S.M."

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Case study of a hybrid (Wind and solar) power plant
(2011) Jaralikar, S.M.; Mangalpady, M.
The paper highlights the urgency of utilizing and promoting use of non conventional sources, particularly the wind and solar energy, so as to control the environmental pollution, such as ozone layer depletion, deforestation, loss of biodiversity, global warming etc. As a case study, the various performance factors of a 10 kW hybrid (wind and solar) power plant, which is having 60:40 power generation share of wind power to solar power were analysed. The study shows that there is mismatch between the designed and actual plant load factor (PLF), as well as the power generation share of the wind and solar power plant. It was also found that the plant utilization factor (PUF) was poor and that there is very less scope for installation of solar tracking system. Based on the detailed analysis of obtained results, certain recommendations were made for streamlining and optimizing the power generation capacity, and also for better utilization of generated power.
Design of lighting system for surface mine projects
(Universitas Ahmad Dahlan thsutikno@ieee.org, 2012) Mangalpady, M.; Jaralikar, S.M.
Indian mining illumination standard is based on incident light without mentioning about uniformity ratio, but International Commission on Illumination (CIE), Austria insists uniformity ratio. In a mine with low surface reflectance, the surrounding illumination level is lower than the minimum lighting standard as specified by various regulatory bodies. The surface brightness further reduces in wet surface condition, and results in poor visibility. In the present study, design was made both in mineral and overburden benches based on the minimum acceptable reflected light and the reflected uniformity ratio. For the purpose of comparison of various types of lighting systems, a stretch of 1.0 km long haul road was considered. The design was attempted with five different types of luminaries. Lamp mounting heights were varied at five steps, namely 8, 10, 12, 14 and 16 m. Design under wet condition incurs an excess cost 9.4 % for mineral bench and 50 % for overburden bench haul roads. Designing under wet surface condition ensures the minimum light level even under the worst condition of surface reflectivity, with marginal increase in cost. © 2012 Universitas Ahmad Dahlan.
Energy audit of a 400/220 kV substation - A case study
(2012) Jaralikar, S.M.; Aruna, M.
The paper highlights the necessity of undertaking performance analysis and energy audit study of an electrical installation, more particularly a power substation on regular basis. A 630 MVA, 400/220 kV substation was identified and a detailed study was carried out to assess the various station performance parameters under different operating conditions. It was observed that the installed capacity of the station (transformer) was very large compared to the actual load it had to supply. Thus the station was under loaded and underutilized for the major period of its operation. This reduced the operational efficiency of the station. Secondly the incoming line voltage level was remaining high during most of the period of operation. Presently voltage is tried to be maintained by switching ON the line reactors at the receiving and sending ends of this station, switching OFF one of the 400 kV incoming lines during off peak loading conditions, thus risking the supply reliability. The present study emphasizes on the urgent need for improving the power quality, streamlining and optimizing the station capacity, operations and its loading pattern. Accordingly suggestions are proposed for the same. � 2011 IEEE.
Energy audit of a 400/220 kV substation - A case study
(2012) Jaralikar, S.M.; Mangalpady, M.
The paper highlights the necessity of undertaking performance analysis and energy audit study of an electrical installation, more particularly a power substation on regular basis. A 630 MVA, 400/220 kV substation was identified and a detailed study was carried out to assess the various station performance parameters under different operating conditions. It was observed that the installed capacity of the station (transformer) was very large compared to the actual load it had to supply. Thus the station was under loaded and underutilized for the major period of its operation. This reduced the operational efficiency of the station. Secondly the incoming line voltage level was remaining high during most of the period of operation. Presently voltage is tried to be maintained by switching ON the line reactors at the receiving and sending ends of this station, switching OFF one of the 400 kV incoming lines during off peak loading conditions, thus risking the supply reliability. The present study emphasizes on the urgent need for improving the power quality, streamlining and optimizing the station capacity, operations and its loading pattern. Accordingly suggestions are proposed for the same. Â© 2011 IEEE.
Investigation to determine the effect of wet surface condition in mines on design of lighting system
(2011) Aruna, M.; Jaralikar, S.M.
In surface mines, where the work is carried out in the night shifts, good lighting is necessary for safe and efficient work. The reflectance of surrounding surfaces is one of the important factors, which improve the vision, in the night hours. Field studies shows that the reflectance of mine surfaces will be reduced, considerably under wet weather conditions. A laboratory set up has been developed to study the reflectivity of various mineral surfaces, in dry and wet weather conditions, which indicates that the reduction in reflectance due to wet surfaces varies from 9 to 48%, depending upon the type of mineral surfaces. The texture depth of surface has an important bearing on the specularity of a surface, when it is wet. The composition of road surface directly influences the texture of that surface, and thus its dry and wet weather specularities.
Investigation to determine the effect of wet surface condition in mines on design of lighting system
(2011) Mangalpady, M.; Jaralikar, S.M.
In surface mines, where the work is carried out in the night shifts, good lighting is necessary for safe and efficient work. The reflectance of surrounding surfaces is one of the important factors, which improve the vision, in the night hours. Field studies shows that the reflectance of mine surfaces will be reduced, considerably under wet weather conditions. A laboratory set up has been developed to study the reflectivity of various mineral surfaces, in dry and wet weather conditions, which indicates that the reduction in reflectance due to wet surfaces varies from 9 to 48%, depending upon the type of mineral surfaces. The texture depth of surface has an important bearing on the specularity of a surface, when it is wet. The composition of road surface directly influences the texture of that surface, and thus its dry and wet weather specularities.
Performance analysis of hybrid (WIND & SOLAR) power plant - A case study
(2010) Jaralikar, S.M.; Aruna, M.
The paper presents a case study of performance analysis of a 10 KW hybrid (wind & solar) power plant having 60:40 power generation share of wind power to solar power. The hybrid power plant performance aspects such as the total power generation capacity and generation share, power utilization capacity, Clean Development Mechanism (CDM), rate of returns, project viability (technical and commercial) etc., are studied. The paper highlights the urgency of utilizing and promoting use of non conventional or green energy sources, particularly the wind and solar energy, so as to control the environmental pollution, ozone layer depletion, deforestation, loss of biodiversity, global warming etc. It was observed that there was mismatch between the designed and actual Plant Load Factor (PLF), as well as the power generation share of the wind and solar power plant. It was also found that the Power Utilization Factor (PUF) was poor and there is very less scope for installation of solar tracking system. After the detailed analysis of results certain recommendations are made for streamlining and optimizing the power generation capacity, and also for better utilization of generated power.
Performance analysis of hybrid (WIND & SOLAR) power plant - A case study
(2010) Jaralikar, S.M.; Mangalpady, M.
The paper presents a case study of performance analysis of a 10 KW hybrid (wind & solar) power plant having 60:40 power generation share of wind power to solar power. The hybrid power plant performance aspects such as the total power generation capacity and generation share, power utilization capacity, Clean Development Mechanism (CDM), rate of returns, project viability (technical and commercial) etc., are studied. The paper highlights the urgency of utilizing and promoting use of non conventional or green energy sources, particularly the wind and solar energy, so as to control the environmental pollution, ozone layer depletion, deforestation, loss of biodiversity, global warming etc. It was observed that there was mismatch between the designed and actual Plant Load Factor (PLF), as well as the power generation share of the wind and solar power plant. It was also found that the Power Utilization Factor (PUF) was poor and there is very less scope for installation of solar tracking system. After the detailed analysis of results certain recommendations are made for streamlining and optimizing the power generation capacity, and also for better utilization of generated power.