Multi-Time-Scale Simulation Tool for Renewable Energy Integration Analysis in Distribution Circuits

Pisitpol Chirapongsananurak,Surya Santoso

doi:10.3390/inventions2020007

Pisitpol Chirapongsananurak, Surya Santoso

Open Access

https://doi.org/10.3390/inventions2020007

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Abstract

This paper develops a distribution circuit multi-time-scale simulation tool for applications in wind turbine and photovoltaic (PV) integration analysis. The proposed simulation tool developed in MATLAB™ includes several distribution circuit components, such as voltage sources, distribution lines, transformers, loads, capacitor banks, wind turbines and PVs. Each equipment consists of three models for simulations in three different time scales, i.e., steady-state, electromechanical transient and electromagnetic transient models. Therefore, the proposed tool is able to perform a long-term simulation involving power system phenomena spreading across time scales. The test circuits employed to perform multi-time-scale simulation in this paper are modified from the IEEE four-node test feeder. The simulation scenarios include wind speed and solar irradiance ramp up and down; a capacitor bank is energized and de-energized; and a single-line-to-ground fault occurs and clears itself. The simulation results show that the proposed tool is capable of evaluating power system phenomena spread across time scales.

Highlights

Increasing penetration of renewable energy sources (RESs), such as wind and solar, raises concerns regarding their impacts on a power system
The distribution circuit multi-time-scale simulations are performed in MATLABTM for a 24-h period
Four test cases are considered in this paper: simulations for a wind farm consisting of an fixed-speed wind turbine (FSWT), a wind farm consisting of a wide-slip wind turbine (WSWT), a wind farm consisting of a doubly-fed induction generator (DFIG) or full converter wind turbine and a PV

Summary

Introduction

Increasing penetration of renewable energy sources (RESs), such as wind and solar, raises concerns regarding their impacts on a power system. Power system simulation tools have been widely used to analyze the potential impacts of wind turbines and photovoltaics (PVs). These tools can help evaluate power system phenomena, such as voltage regulation, fault study, switching transients and harmonics analysis. The simulation tools can be used to perform the feasibility studies of operating wind turbines and PVs in a distribution system [10,11], analyze the stability of a distribution system with wind and solar power [12,13], determine the maximum penetration or hosting capacity of wind turbines and PVs [14,15,16], evaluate the performance of wind turbine and PV control methods [17,18] and investigate the effects of energy storage systems [19,20,21] and reactive power sources, such as capacitor banks, static var compensators (SVCs), static synchronous compensators (STATCOMs) [19,22,23] and dynamic voltage restorers (DVRs) [24] to a distribution system having wind and PV generators.

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