TY - JOUR
T1 - Variable-Speed PICO Hydel Energy Storage With Synchronverter Control to Emulate Virtual Inertia in Autonomous Microgrids
AU - Vasudevan, Krishnakumar R.
AU - Ramachandaramurthy, Vigna K.
AU - Venugopal, Gomathi
AU - Guerrero, Josep M.
AU - Ekanayake, Janaka B.
AU - Tiong, Sieh Kiong
N1 - Publisher Copyright:
IEEE
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2022/3/1
Y1 - 2022/3/1
N2 - Autonomous microgrids are potential alternative to grid connectivity for powering remote communities around the globe. A sustainable microgrid with renewables and energy storage having minimum operation and maintenance routines is the most sought option. Batteries are predominantly used to support the stochastic behavior of renewables in such microgrids. However, they are prone to frequent failure and require periodic maintenance, which demands an alternative. Thus, in this article, the renewable powered irrigation system in India was configured to form sustainable pico hydel energy storage (PHES). To enhance the inertia of the microgrid with static sources, virtual inertia capability was induced into PHES by modified synchronverter technology. First, the small-signal modeling approach was presented to derive the closed-loop transfer function of the system. Subsequently, the effect of control parameter variation on system stability and the interaction between the governor and the synchronverter was investigated using eigenvalue analysis. Next, the performance of synchronverter was compared with the established vector control through time-domain simulations in MATLAB/Simulink. The simulation results revealed that the proposed strategy improved the inertial response of PHES and outperformed vector control by reducing peak overshoot, settling time, and steady-state error.
AB - Autonomous microgrids are potential alternative to grid connectivity for powering remote communities around the globe. A sustainable microgrid with renewables and energy storage having minimum operation and maintenance routines is the most sought option. Batteries are predominantly used to support the stochastic behavior of renewables in such microgrids. However, they are prone to frequent failure and require periodic maintenance, which demands an alternative. Thus, in this article, the renewable powered irrigation system in India was configured to form sustainable pico hydel energy storage (PHES). To enhance the inertia of the microgrid with static sources, virtual inertia capability was induced into PHES by modified synchronverter technology. First, the small-signal modeling approach was presented to derive the closed-loop transfer function of the system. Subsequently, the effect of control parameter variation on system stability and the interaction between the governor and the synchronverter was investigated using eigenvalue analysis. Next, the performance of synchronverter was compared with the established vector control through time-domain simulations in MATLAB/Simulink. The simulation results revealed that the proposed strategy improved the inertial response of PHES and outperformed vector control by reducing peak overshoot, settling time, and steady-state error.
KW - Capacitors
KW - Energy storage
KW - Frequency synchronization
KW - Hydraulic systems
KW - Microgrids
KW - pumped hydro storage (PHS)
KW - Reactive power
KW - Reservoirs
KW - rural electrification
KW - synchronverter
KW - virtual inertia
KW - virtual synchronous generator
KW - Voltage measurement
UR - http://www.scopus.com/inward/record.url?scp=85100926100&partnerID=8YFLogxK
U2 - 10.1109/JSYST.2021.3053358
DO - 10.1109/JSYST.2021.3053358
M3 - Journal article
AN - SCOPUS:85100926100
SN - 1932-8184
VL - 16
SP - 452
EP - 463
JO - IEEE Systems Journal
JF - IEEE Systems Journal
IS - 1
ER -