Integration of Distributed Generation to Microgrid with Virtual Inertia

Gurugubelli, Vikash; Ghosh, Arnab; Rudra, Shubhobrata

doi:10.1109/indicon49873.2020.9342377

Cited by 14 publications

(1 citation statement)

References 17 publications

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“…Also, by removing the phase locked loop, which results in virtual inertia, the system may be maintained without compromising stability using DGs/RESs (Asrari et al , 2019; Liu et al , 2020). Innovative control approaches are used to build and control various interface converters for RESs, storage systems and MG applications are reported in Muftau et al (2020) and Vikash et al (2020). In recent literature work, different methods (like fuzzy controller and particle swarm optimization) are used to find the inertia and damping parameters of the VSM to get the desired performance of the system (Rahman et al , 2019; Liu et al , 2020; Thomas et al , 2021; Vikash et al , 2021).…”

Section: Introductionmentioning

confidence: 99%

Control of inverters in standalone and grid-connected microgrid using different control strategies

Gurugubelli

Ghosh

2021

WJE

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Purpose The share of renewable energy sources (RESs) in the power system is increasing day by day. The RESs are intermittent, therefore maintaining the grid stability and power balance is very difficult. The purpose of this paper is to control the inverters in microgrid using different control strategies to maintain the system stability and power balance. Design/methodology/approach In this paper, different control strategies are implemented to the voltage source converter (VSC) to get the desired performance. The DQ control is a basic control strategy that is inherently present in the droop and virtual synchronous machine (VSM) control strategies. The droop and VSM control strategies are inspired by the conventional synchronous machine (SM). The main objective of this work is to design and implement the three aforementioned control strategies in microgrid. Findings The significant contributions of this work are: the detailed implementation of DQ control, droop control and VSM control strategies for VSC in both grid-connected mode and standalone mode is presented; the MATLAB/Simulink simulation results and comparative studies of the three aforementioned controllers are introduced first time in the proposed work; and the opal-RT digital real-time simulation results of the proposed VSM control show the superiority in transient response compared to the droop control strategy. Research limitations/implications In the power system, the power electronic-based power allowed by VSM is dominated by the conventional power which is generated from the traditional SM, and then the issues related to stability still need advance study. There are some differences between the SM and VSM characteristics, so the integration of VSM with the existing system still needs further study. Economical operation of VSM with hybrid storage is also one of the future scopes of this work. Originality/value The significant contributions of this work are: the detailed implementation of DQ control, droop control and VSM control strategies for VSC in both grid-connected mode and standalone mode is presented; the MATLAB/Simulink simulation results and comparative studies of the three aforementioned controllers are introduced first time in the proposed work; and the opal-RT digital real-time simulation results of the proposed VSM control show the superiority in transient response compared to the droop control strategy.

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