Reliability Assessments of Distributed Generation Penetration Level on Power System Networks

Reliability assessment plays a crucial role in assessing the stability and performance of power system networks. With the integration of distributed generation (DG), the reliability dynamics of these networks have undergone significant transformations. However, most of the existing research in this area has predominantly focused on voltage and power loss-based DG placement strategies, neglecting the importance of reliability-based placement methods. Therefore, this paper aims to bridge this gap by investigating the impact of placing DGs with different penetration levels on the effectiveness of network reliability. To achieve this objective, the study utilizes the IEEE 9-bus and 14-bus systems as test cases for simulating network reliability. The widely adopted Monte Carlo Simulation (MCS) technique is employed to comprehensively evaluate both customer-related and system reliability performance. The simulation outcomes yield important reliability indices, including System Average Interruption Frequency Index (SAIFI), System Average Interruption Duration Index (SAIDI), and Customer Average Interruption Duration Index (CAIDI). The results demonstrate the varying impacts of DG placement and penetration levels on network reliability, unveiling the intricate relationship between these factors and the overall system reliability.