Abstract
ABSTRACT Photovoltaic (PV) system adoption is accelerating quickly, raising worries among electricity network service providers about how to accommodate more PV while keeping system operating indices within acceptable bounds. This idea, which is typically about Hosting Capacity (HC), has recently gotten more interest. Modern smart inverters provide control possibilities in Volt-Var and Volt-Watt based on system voltage level management. In this paper, the impact of various connection standards that encompass these tactics on the capacity of solar PV systems to store energy and their usability in the delivery of low-voltage systems is thoroughly examined. Modeling of smart inverters has been validated using MATLAB SIMULINK with various Volt-Var and Volt-Watt control functions. Volt-Watt-Var control has been designed based on Model Predictive Control (MPC) and comparing the results with a PID controller. The proposed MPC control has been applied on the IEEE-9 bus with combined controls. The impact of various connection requirements on photovoltaic Hosting Capacity (PVHC) is investigated to determine the best connection strategy(s) to handle the problem of voltage encroachment. In addition, the paper gives a deeper knowledge of HC enhancement using sophisticated inverter control features within a low-voltage distribution network of converters, besides it shows the effects of over-voltage and under-voltage on the system parameters.
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