Distributed electric-spring-based smart thermal loads for overvoltage prevention in LV distributed network using dynamic consensus approach
File(s)
Accepted version
Author(s)
Chen, Tong
Zheng, Yu
Chaudhuri, Balarko
Hui, Shu Yuen Ron
Type
Journal Article
Abstract
Overvoltage arising from reverse power flow in low-voltage (LV) distribution network caused by surplus roof-top photovoltaic (PV) energy generation is a major challenge in the emerging smart grid. This paper reports a study on the use of distributed thermal Smart Loads (SLs) for overvoltage prevention along a LV feeder. The basic principle involves the combined use of electric springs (ESs) and storage-type electric water heaters (EWHs) as distributed smart loads. Through distributed control, these smart loads play the important roles of mitigating reverse power flow problems and maintaining local mains voltage within the specified tolerance. Detailed modeling of the combined ES and EWH including their practical electrical and thermal capacities and constraints is adopted and optional distributed energy storage system (ESS) is also considered in the evaluation. Based on the Sha Lo Bay residential LV network in Lantau Island, Hong Kong, these case studies confirm the feasibility of the proposed approach for overvoltage prevention. The proposed distributed SLs-plus-ESS method is proved to be a cost-effective and environmental friendly way for overvoltage prevention in LV distributed network with high PV penetration.
Date Issued
2020-10-01
Date Acceptance
2019-10-01
Citation
IEEE Transactions on Sustainable Energy, 2020, 11 (4), pp.2098-2108
ISSN
1949-3029
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Start Page
2098
End Page
2108
Journal / Book Title
IEEE Transactions on Sustainable Energy
Volume
11
Issue
4
Copyright Statement
© 2019 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.
Identifier
https://ieeexplore.ieee.org/document/8887268
Subjects
0906 Electrical and Electronic Engineering
0915 Interdisciplinary Engineering
Publication Status
Published
Date Publish Online
2019-10-30