Results 41 to 50 of about 35,795 (319)

Second harmonic voltage injection‐based self impedance estimation for effective decoupled droop control in a microgrid

Energy Conversion and Economics, 2022
In an islanded microgrid (IMG), droop control effectively shares real and reactive power demands among distributed generators (DGs), thereby regulating the frequency and voltage in high X/R ratio networks.
Muli Malakondaiah, Kalyan Kumar Boddeti, Bonu Ramesh Naidu, Prabodh Bajpai   +3 more
doaj   +1 more source

Proportional Reactive Power Sharing Using Advanced Droop Control Method [PDF]

International Journal of Trend in Scientific Research and Development, 2018
Microgrids are nowadays used to produce electric energy with more efficiency and advantage. However, the use of microgrids presents some challenges. One of the main problems of the microgrids widely used in electrical power systems is the control of voltage, frequency and load sharing balance among inverter based distributed generators DGs in islanded ...
Miss. Priya S. Sonekar, Sagar B. Kudkelwar   +1 more
openaire   +2 more sources

An Improved Droop Control Strategy for Low-Voltage Microgrids Based on Distributed Secondary Power Optimization Control

Energies, 2017
To achieve accurate reactive power sharing and voltage frequency and amplitude restoration in low-voltage microgrids, a control strategy combining an improved droop control with distributed secondary power optimization control is proposed. The active and
Demin Li, Bo Zhao, Zaijun Wu, Xuesong Zhang, Leiqi Zhang   +4 more
doaj   +1 more source

Consensus-Based Intelligent Distributed Secondary Control for Multiagent Islanded Microgrid

International Transactions on Electrical Energy Systems, 2023
Isolated microgrids (MGs) face challenges in performance stability and active/reactive power sharing as a result of frequency/voltage deviations and mismatched line impedance issues. In this paper, a consensus-based multiagent system (MAS) is proposed as
Ali M. Jasim, Basil H. Jasim, Flah Aymen, Hossam Kotb, Ahmed Althobaiti   +4 more
doaj   +1 more source

Utilizing the dead-time effect to achieve decentralized reactive power sharing in islanded AC microgrids

, 2019
In islanded ac microgrids, distributed energy storage systems (DESSs) are normally coupled to the grid through voltage source inverters (VSIs). To improve the operation efficiency and to avoid overloading, it is desirable that VSIs can share active and ...
Qi, Yang, Fang, Jingyang, Tang, Yi
core   +1 more source

Using low bandwidth communication through power lines to enhance reactive power sharing for inverters-based microgrids

International Journal of Electrical Power & Energy Systems
Active and reactive powers should be properly shared among sources to avoid instability problems and to improve reliability in inverter-based micro grids.
Mahmoud AlSadat, Federico Martin Ibanez, Ibrahim Elghanam, Vladimir Terzija   +3 more
doaj   +1 more source

Self-adaptable reactive power-voltage controller for virtual synchronous generators

The Journal of Engineering, 2019
With a higher and higher penetration of renewable energy in the grid, the principle of the virtual synchronous generator (VSG) is proposed as an attractive solution to controlling the grid-connected inverters.
Bo Zhang, Dongxue Li, Yuke Wang, Xiangwu Yan   +3 more
doaj   +1 more source

An Efficient Reactive Power Dispatch Method for Hybrid Photovoltaic and Superconducting Magnetic Energy Storage Inverters in Utility Grids

IEEE Access, 2020
The intermittent property and increased grid restrictions have become the most critical elements for increasing penetration levels of clean renewable energy sources (RESs).
Sayed M. Said, Mokhtar Aly, Hartmann Balint   +2 more
doaj   +1 more source

Micro-grid reactive power sharing using an adaptive virtual impedance technique

, 2019
The droop control scheme was generally employed in micro-grids (MG), however the main drawbacks of this scheme is its weak performances in reactive power sharing, mainly because of the unequal line impedances.
Rabhi, A., Oral, B., Hajji, B., Sellamna, H., Mellit, A.   +4 more
core   +3 more sources

Active and reactive power sharing in micro grid using droop control

International Journal of Electrical and Computer Engineering (IJECE), 2020
The development of renewable energy contributes to the global objectives of reducing our greenhouse gas emissions, obtaining and increasing our energy efficiency. In the face of these changes, the electric-network must adapt, while maintaining a high level of reliability and a quality of energy production.
Omar Feddaoui, Riad Toufouti, Labed Djamel, Salima Meziane   +3 more
openaire   +3 more sources