Abstract
This paper presents a simulation of a grid-connected photovoltaic power system. A complex model of power distribution system is developed in MATLAB Simulink, then it will be simulated to determine an amount of power delivered to the grid based on irradiance and temperature. Solar irradiance data collection is conducted using a solar irradiance meter. These weather data (solar irradiances and temperatures) are transformed into signal inputs and model through a grid-tied Photovoltaic (PV) model system which consists of PV, incremental conductance Maximum Power Point Tracking (MPPT) method, DC-DC boost converter, inverter, voltage source converter (VSC) control algorithms, and grid equipment. The output variables can be related to current, voltage or power. However, tracing of the current-voltage (I-V) characteristics or power-voltage (P-V) characteristics are the vital need to grid-tied PV system operation. Changes in solar irradiance and temperature imply changes in output variables. Detailed modelling of the effect of irradiance and temperature, on the parameters of the PV module and the output parameters will be discussed. With the aid of this model, one can have a feasible idea about the solar energy generation potential at given locations. This comprehensive model is simulated using MATLAB/Simulink software.
Highlights
The grid interconnection systems bring a new phase to the renewable power technology via showcasing the time-based excess and limitations with renewable power generation to the conventional grid model; that generates base-load power [1]
It is clearer that the operation of conventional engines come with some huge costs like high operation and maintenance cost, rapid changing in generator consumables price, unavailability of diesel fuel in some cases, emission of greenhouse gases (GHG) into the atmosphere
As the irradiance continues to fluctuate and reached a record low of 83.7W/m2 at t = 5.9 seconds. This effect fluctuation was noted on the inverter output current to the grid in Figure 5(d) and the output power of the system in Figure 5(c), which were recorded as 7.20KW
Summary
The grid interconnection systems bring a new phase to the renewable power technology via showcasing the time-based excess and limitations with renewable power generation to the conventional grid model; that generates base-load power [1]. Several issues with conventional generation productions have influenced the need for the advancement of photovoltaic systems utilization. It is clearer that the operation of conventional engines come with some huge costs like high operation and maintenance cost, rapid changing in generator consumables price, unavailability of diesel fuel in some cases, emission of greenhouse gases (GHG) into the atmosphere. These among other issues have influenced the need for sustainable and environmental friendly solutions. Another important issue is the fact that photovoltaic technology is continuously evolving to becoming better and the price per kilowatt is relative cheaper today [2]
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