MATLAB/Simulink-based modelling and performance assessment of wind–diesel energy storage system

Abstract

In this article, a comprehensive model is developed to study the performance of a hybrid wind-diesel energy storage system. Energy storage system exchanges both real and reactive power with the wind-diesel system to improve both frequency and voltage. For obtaining pre-disturbance steady-state scenario of the system, a modified load flow algorithm is proposed which calculates induction machine slip and other initial conditions, in addition to the results obtained with conventional load flow. A compact model is developed by integrating network model, energy storage system and machine equations along with the associated control systems. For frequency estimation concept, centre of inertia is utilised. Energy storage system is modelled as a controllable current source. Complete modelling is carried out in MATLAB/Simulink environment. Simulations are carried out for load disturbance as well as wind perturbations to demonstrate the efficacy of the proposed scheme.

Dynamic performance improvement of isolated power system using intelligently controlled SMES

“…Details pertaining to SMES modelling have been given in Section 4 and wind‐diesel system under study is taken from [30].…”

“…The control law and identification algorithm derived in Sections 2.2 and 3.1 respectively are implemented in this section. Since the SMES unit considered is a two input two output system, the implementation of the proposed scheme is depicted in Figure 4(d) where y 1 and y 2 are the regulated variables as defined in Equations (29) and (30) and u 1 and u 2 are the active power (P d ) and reactive power (Q d ) commands issued by the regulator to SMES unit.…”

Voltage and frequency control of wind–diesel power system through adaptive sliding mode control of superconducting magnetic energy storage

“…Voltage control of wind–diesel system through reactive power control using intelligent control strategies like fuzzy control, sliding mode control (SMC), and predictive control is reported in Bansal (2006); Kassem and Abdelaziz (2014); Mohanty and Viswavandya (2016), but frequency control is not carried out. Control of frequency and voltage deviations in wind–diesel system under load and wind power disturbances using SMES as storage unit is done in Zargar et al (2018), but no control strategy is applied over SMES unit to achieve system robustness and improvement in system performance.…”

Modelling and stability investigations of an aggregate wind farm–fed multi-machine system

“…In Ahsan and Mufti (2020) also, a benchmark three-machine system was modified with an additional power share from a squirrel-cage induction generator (SCIG), to assess the dynamic performance of the system using a flywheel storage. Similarly in Zargar et al (2018), even though the SCIG strengthened the active power profile of the system, the reactive power had to be compensated externally. Nevertheless, these papers mostly focus on smaller systems with either a single-machine or three-machines systems.…”