期刊
IEEE SYSTEMS JOURNAL
卷 16, 期 1, 页码 452-463出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSYST.2021.3053358
关键词
Microgrids; Voltage measurement; Reservoirs; Reactive power; Hydraulic systems; Frequency synchronization; Capacitors; Energy storage; pumped hydro storage (PHS); rural electrification; synchronverter; virtual inertia; virtual synchronous generator
类别
资金
- Long Term Research Grant Scheme, Ministry of Education Malaysia
The article discusses the transformation of a renewable powered irrigation system in India into a sustainable pico-hydel energy storage system, which enhances microgrid inertia through synchronverter technology. By analyzing the effect of control parameter variations on system stability and performance comparisons with vector control, the proposed strategy demonstrates improved inertial response, minimizing peak overshoot, settling time, and steady-state error.
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.
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