Electric springs with coordinated battery management for reducing voltage and frequency fluctuations in microgrids
File(s)
Accepted version
Author(s)
Yang, T
Mok, KT
Tan, SC
Lee, CK
Hui, SY
Type
Journal Article
Abstract
Electric springs based on power electronics have been proposed as a demand response method for stabilizing power grid fed by substantial intermittent renewable energy sources. Associated with energy storage, they can provide both active and reactive power compensation. Due to the limited storage capacity of the battery, this project explores a new control scheme for the third version of the electric springs (ES-3) to operate under the physical constraints of the state-of-charge of the battery for microgrid stability applications. The ES-3 is based on a bi-directional grid-connected power converter with a battery bank. Unlike the traditional control of grid-connected power inverters for injecting renewable power to the power grid, the proposed control scheme puts the stability of the power grid as a high priority while maintaining its normal bi-directional power flow functions. Such a scheme has been tested in an experimental prototype and a power grid simulator. Results are presented in this paper to illustrate the use of the scheme in battery's monitoring, charging/discharging management, and output power control.
Date Issued
2018-05-01
Date Acceptance
2016-08-12
Citation
IEEE Transactions on Smart Grid, 2018, 9 (3), pp.1943-1952
ISSN
1949-3053
Start Page
1943
End Page
1952
Journal / Book Title
IEEE Transactions on Smart Grid
Volume
9
Issue
3
Copyright Statement
© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Subjects
0906 Electrical And Electronic Engineering
0915 Interdisciplinary Engineering
Publication Status
Published
Date Publish Online
2016-08-25