Browsing by Author "Singh, S.V."
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Item Current injection modelling based large-signal analysis of a grid-connected solar photovoltaic power system(2017) Singh, S.V.; Shubhanga, K.N.In recent years, penetration level of the grid-connected renewables has been increasing. These grid integration, affects the steady state as well as dynamic behavior of the power system network. In this paper, the conventional loadflow programme is modified to accommodate grid-connected solar photovoltaic (SPV) power system. A model of SPV-integrated power system is developed to carry out large-signal analysis. Various test cases are illustrated to appreciate the network behavior for varying meteorological variable and different grid-specifications pertaining to SPV power system. Critical clearing time of SPV-integrated power system is estimated. � 2016 IEEE.Item Current injection modelling based large-signal analysis of a grid-connected solar photovoltaic power system(Institute of Electrical and Electronics Engineers Inc., 2017) Singh, S.V.; Shubhanga, K.N.In recent years, penetration level of the grid-connected renewables has been increasing. These grid integration, affects the steady state as well as dynamic behavior of the power system network. In this paper, the conventional loadflow programme is modified to accommodate grid-connected solar photovoltaic (SPV) power system. A model of SPV-integrated power system is developed to carry out large-signal analysis. Various test cases are illustrated to appreciate the network behavior for varying meteorological variable and different grid-specifications pertaining to SPV power system. Critical clearing time of SPV-integrated power system is estimated. © 2016 IEEE.Item Modelling of a solar photovoltaic power plant for power system studies(2017) Girisha, Navada, H.; Singh, S.V.; Shubhanga, K.N.In this paper, given the desired peak power requirement of the solar photovoltaics (SPV) power plant, computation of parameters of mathematical model of the SPV module along with aggregation parameters are considered. The SPV module model parameters are estimated by adjusting it to nonlinear current-voltage(I-V) equation at the three notable points on the I-V curve, which are provided by all commercial PV array data sheets. An appropriate process is evolved for estimating the number of SPV modules required for a given power specification, using constraints on converter voltage ratings. Various test cases are illustrated to appreciate aggregation process of SPV modules to form SPV power plant. The results presented form a basic step in power system analysis with SPV integration. � 2017 IEEE.Item Modelling of a solar photovoltaic power plant for power system studies(Institute of Electrical and Electronics Engineers Inc., 2017) Girisha Navada, H.; Singh, S.V.; Shubhanga, K.N.In this paper, given the desired peak power requirement of the solar photovoltaics (SPV) power plant, computation of parameters of mathematical model of the SPV module along with aggregation parameters are considered. The SPV module model parameters are estimated by adjusting it to nonlinear current-voltage(I-V) equation at the three notable points on the I-V curve, which are provided by all commercial PV array data sheets. An appropriate process is evolved for estimating the number of SPV modules required for a given power specification, using constraints on converter voltage ratings. Various test cases are illustrated to appreciate aggregation process of SPV modules to form SPV power plant. The results presented form a basic step in power system analysis with SPV integration. © 2017 IEEE.Item Series injection-based powerflow modelling of a solar photovoltaic power system(2017) Singh, S.V.; Shubhanga, K.N.In this paper, a conventional powerflow programme is modified to accommodate solar photovoltaics (SPV) power systems with series power injections. This approach facilitates inclusion of the SPV non-linear equations within main loadflow iteration process, demanding less computational efforts. In this programme, in addition to series reactive power specification, bus voltage control strategy can also be easily handled. To demonstrate the workability of the programme, including SPV power system, a grid connected SPV system is considered. Test cases pertaining to various meteorological variables and effect of X/R ratio of the interconnecting line, are also presented. � 2016 IEEE.Item Series injection-based powerflow modelling of a solar photovoltaic power system(Institute of Electrical and Electronics Engineers Inc., 2017) Singh, S.V.; Shubhanga, K.N.In this paper, a conventional powerflow programme is modified to accommodate solar photovoltaics (SPV) power systems with series power injections. This approach facilitates inclusion of the SPV non-linear equations within main loadflow iteration process, demanding less computational efforts. In this programme, in addition to series reactive power specification, bus voltage control strategy can also be easily handled. To demonstrate the workability of the programme, including SPV power system, a grid connected SPV system is considered. Test cases pertaining to various meteorological variables and effect of X/R ratio of the interconnecting line, are also presented. © 2016 IEEE.Item Software-in-the-loop based MPPT enabled realtime solar photovoltaics simulator in FPGA platform for academic appreciation(2017) Singh, S.V.; Shubhanga, K.N.Non-linear solar photovoltaic (SPV) system characteristics and its dependency on meteorological variables of irradiance and temperature; renders this energy source rather involved to visualize. In this paper a low power realtime SPV module simulator is realized in field programmable gate array (FPGA) XCS100E platform for classroom teaching. FPGA platform is used due to its parallel computing nature and lucid hardware description languages (HDL) available. Output of FPGA being high frequency PWM (pulse width modulated) signals, can be used to upgrade the realized simulator at actual power levels through power electronics interfacing. SPV module with MPPT enabling feature is included, which can be used for testing and deployment of various MPPT techniques. � 2017 IEEE.Item Software-in-the-loop based MPPT enabled realtime solar photovoltaics simulator in FPGA platform for academic appreciation(Institute of Electrical and Electronics Engineers Inc., 2017) Singh, S.V.; Shubhanga, K.N.Non-linear solar photovoltaic (SPV) system characteristics and its dependency on meteorological variables of irradiance and temperature; renders this energy source rather involved to visualize. In this paper a low power realtime SPV module simulator is realized in field programmable gate array (FPGA) XCS100E platform for classroom teaching. FPGA platform is used due to its parallel computing nature and lucid hardware description languages (HDL) available. Output of FPGA being high frequency PWM (pulse width modulated) signals, can be used to upgrade the realized simulator at actual power levels through power electronics interfacing. SPV module with MPPT enabling feature is included, which can be used for testing and deployment of various MPPT techniques. © 2017 IEEE.