Simulation of Grid-Tied Photovoltaic System Based on Solar Irradiance and Temperature Data in Semarang

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.

Multi-Functional PV Inverter With Low Voltage Ride-Through and Constant Power Output

“…The intermittent nature of solar energy also affects the output of the PV generator. Even during fully illuminated solar hours, the solar irradiance can quickly fluctuate from 100% to 40% within a few seconds [20]. The irradiance fluctuation in PV systems may lead to power flickers, which can risk an overall grid stability [21].…”

“…Brinkel et al [27] have proposed to utilize the battery energy of electric vehicles to reduce the power quality issues in the microgrid. The analysis for the fast variation in irradiance is reported in the study [20], which shows that the real-time irradiance fluctuations range from 10% to -90% within 10 seconds.…”

“…Therefore, power flickers must be avoided to attain inverter and grid stability [24]. The actual irradiation data shows that even in fully illuminated solar hours, the irradiation can rapidly fluctuate up to 50% within a few seconds [20,21]. The dynamic MPPT testing feature of the PV simulator can easily mimic this scenario, as shown in Fig.…”