Open AccessPower management in PV‐battery‐hydro based standalone microgrid
Author(s) -
Kewat Seema,
Singh Bhim,
Hussain Ikhlaq
Publication year - 2018
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
eISSN - 1752-1424
pISSN - 1752-1416
DOI - 10.1049/iet-rpg.2017.0566
Subject(s) - microgrid , photovoltaic system , electrical engineering , battery (electricity) , harmonics , voltage regulation , voltage , voltage source , constant power circuit , maximum power point tracking , engineering , computer science , power (physics) , automotive engineering , power factor , inverter , physics , quantum mechanics
This work deals with the frequency regulation, voltage regulation, power management and load levelling of solar photovoltaic (PV)‐battery‐hydro based microgrid (MG). In this MG, the battery capacity is reduced as compared to a system, where the battery is directly connected to the DC bus of the voltage source converter (VSC). A bidirectional DC–DC converter connects the battery to the DC bus and it controls the charging and discharging current of the battery. It also regulates the DC bus voltage of VSC, frequency and voltage of MG. The proposed system manages the power flow of different sources like hydro and solar PV array. However, the load levelling is managed through the battery. The battery with VSC absorbs the sudden load changes, resulting in rapid regulation of DC link voltage, frequency and voltage of MG. Therefore, the system voltage and frequency regulation allows the active power balance along with the auxiliary services such as reactive power support, source current harmonics mitigation and voltage harmonics reduction at the point of common interconnection. The experimental results under various steady state and dynamic conditions, exhibit the excellent performance of the proposed system and validate the design and control of proposed MG.