Abstract
| Language | English |
|---|---|
| Pages | 1851-1867 |
| Number of pages | 17 |
| Journal | IET Power Electronics |
| Volume | 12 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 18 Jul 2019 |
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Keywords
- dc transmission technologies
- power grids
- renewable energy resources
- RERs
- dc fault propagation
Cite this
}
Review of technologies for DC grids - power conversion, flow control and protection. / Adam, Grain Philip; Kristain Vrana, Till; Li, Rui; Li, Peng; Burt, Graeme; Finney, Stephen.
In: IET Power Electronics, Vol. 12, No. 8, 18.07.2019, p. 1851-1867.Research output: Contribution to journal › Article
TY - JOUR
T1 - Review of technologies for DC grids - power conversion, flow control and protection
AU - Adam, Grain Philip
AU - Kristain Vrana, Till
AU - Li, Rui
AU - Li, Peng
AU - Burt, Graeme
AU - Finney, Stephen
N1 - © 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.
PY - 2019/7/18
Y1 - 2019/7/18
N2 - Abstract: This article reviews dc transmission technologies for future power grids. The article emphasizes the attributes that each technology offers in terms of enhance controllability and stability, resiliency to ac and dc faults, and encourage increased exploitations of renewable energy resources (RERs) for electricity generation. Discussions of ac/dc and dc/dc converters reveal that the self-commutated dc transmission technologies are critical for better utilization of large RERs which tend to be dispersed over wide geographical areas, and offer needed controllability for operation of centralized and decentralized power grids. It is concluded that the series power flow controllers have potential to restrict the expensive isolated dc/dc converters to few applications, in which the prevention of dc fault propagation is paramount. Cheaper non-isolated dc/dc converters offer dc voltage tapping and matching and power regulation but they are unable to prevent pole-shifting during pole-to-ground dc fault. To date hybrid dc circuit breakers target dc fault isolation times ranging from 3ms to 5ms; while the resonance-based dc circuit breakers with forced current zeros target dc fault clearance times from 8ms to 12.5ms.
AB - Abstract: This article reviews dc transmission technologies for future power grids. The article emphasizes the attributes that each technology offers in terms of enhance controllability and stability, resiliency to ac and dc faults, and encourage increased exploitations of renewable energy resources (RERs) for electricity generation. Discussions of ac/dc and dc/dc converters reveal that the self-commutated dc transmission technologies are critical for better utilization of large RERs which tend to be dispersed over wide geographical areas, and offer needed controllability for operation of centralized and decentralized power grids. It is concluded that the series power flow controllers have potential to restrict the expensive isolated dc/dc converters to few applications, in which the prevention of dc fault propagation is paramount. Cheaper non-isolated dc/dc converters offer dc voltage tapping and matching and power regulation but they are unable to prevent pole-shifting during pole-to-ground dc fault. To date hybrid dc circuit breakers target dc fault isolation times ranging from 3ms to 5ms; while the resonance-based dc circuit breakers with forced current zeros target dc fault clearance times from 8ms to 12.5ms.
KW - dc transmission technologies
KW - power grids
KW - renewable energy resources
KW - RERs
KW - dc fault propagation
U2 - 10.1049/iet-pel.2018.5719
DO - 10.1049/iet-pel.2018.5719
M3 - Article
VL - 12
SP - 1851
EP - 1867
JO - IET Power Electronics
T2 - IET Power Electronics
JF - IET Power Electronics
SN - 1755-4535
IS - 8
ER -