The analysis of voltage increase phenomena in a distribution network with high penetration of distributed generation

Abstract

Various distributed generation (DG) systems with capacities in the range of several kilowatts to tens of megawatts can increase voltage along a feeder when they are injecting power into distribution systems. Thus, the main objective of this study is to analyze the transient behavior of such a distribution system integrated by DG systems. This study (1) models the IEEE 37-bus test feeder as a distribution network enhanced by DG systems in Simulink of MATLAB; (2) proposes case studies of DG systems with their total capacity of 10 and 38 percent of the feeder rating; and then (3) simulates the transient behavior of the test feeder when DG systems inject active power at the unity power factor during a few cycles of 60 Hz. Finally, it addresses the issues of an increase in voltage resulting from the installation of DG systems in a transient state. Index Terms--Distributed generation (DG), transient behavior of a distribution network, and an increase in voltage

Optimal allocation of distributed generation for power flow enhancement in distribution network

“…The specifications of standard IEEE 37 Radial Distribution system 37 with ratings are provided in Table 1.…”

“…In this research, a transformer is modeled using MATLAB's Simulink with a feeder of 138 kV/13.09 kV, respectively 37 . Table 2 comprises transformer R/X ratio of 10, 0.008 PU for the winding resistance, and 0.08 PU for the leakage reactance.…”

“…The system parameters for designing the grid system with system configuration along with various parameters and power ratings of DG system are shown in Table 3 37 …”