MODELING AND EMULATION OF CONVENTIONAL GENERATION WITH INTEGRATION OF REMOTE COMMUNITIES IN MVAC SYSTEMS

Abstract

The advancement of communities is intricately linked to continuous access to electrical energy. The isolation of communities in remote rural areas poses a challenge for the traditional methods of electrical power generation and transmission. The incorporation of battery energy storage, coupled with advanced control strategies, has proven essential in optimizing the capacity and energy output of these facilities. Furthermore, these innovations play a crucial role in addressing and mitigating potential adverse effects on the grid arising from the intermittent nature of distributed generation.In this research project, our focus is on developing a real-time model to explore dynamic and transient studies. Our objective is to design a protection scheme that enhances the efficiency and reliability of the system. Furthermore, we implement a momentary cessation within the existing infrastructure to scrutinize the behavior of photovoltaic (PV) systems in the overall electrical network. Momentary cessation refers to the temporary suspension of power delivery to an Electrical Power System (EPS) while remaining connected to the Area EPS. This occurs in response to disturbances in voltage or system frequency. The PV system is designed to immediately restore its output once the voltage and frequency return to within predefined acceptable ranges. This procedure is crucial for maintaining grid stability and reliability. During voltage or frequency disturbances, the momentary cessation prevents potential damage to the PV system and other interconnected devices. By ceasing power delivery only briefly, the system mitigates the risk of prolonged outages and ensures a rapid return to normal operation. This capability is especially important in scenarios where the grid experiences transient faults or fluctuations, as it allows the PV system to ride through disturbances without contributing to instability. In our study, we analyze the impact of momentary cessation on the overall performance and reliability of the electrical grid. We assess how the PV system responds to various types of disturbances and the subsequent recovery process. The results provide insights into optimizing grid integration of renewable energy sources, enhancing resilience, and minimizing the risk of widespread power disruptions. Additionally, we consider the voltage improvement that occurs during the switching of Battery Energy Storage Systems (BESS) to forming mode. This analysis is particularly important for weak feeders, which are especially vulnerable to voltage instability during the switching of BESS. In this research project, we consider both transient and steady-state analyses to comprehensively address the challenges of integration of remote community with conventional generation. To maintain the connection of photovoltaic (PV) systems during temporary voltage sags, Low Voltage Ride Through (LVRT) capability is employed. This feature enhances the reliability of MVAC systems and ensures that PV installations remain connected to the power grid even during fluctuations. By enabling PV systems to ride through these short-term voltage dips, LVRT contributes to the stability of the grid and helps prevent disruptions in renewable energy generation, ultimately supporting a more resilient and reliable power network.