NDLI: Multi-terminal medium voltage DC grids fault location and isolation

Content Provider	IET Digital Library
Author	Monadi, Mehdi Ciobotaru, Cosmin Koch Luna, Alvaro Candela, Jose Ignacio Rodriguez, Pedro
Abstract	Voltage source converters (VSCs) are highly vulnerable to DC fault current; thus, protection is one of the most important concerns associated with the implementation of multi-terminal VSC-based DC networks. This study proposes a protection strategy for medium voltage DC distribution systems. The strategy consists of a communication-assisted fault location method and a fault isolation scheme that provides an economic, fast and selective protection by means of using the minimum number of DC circuit breakers. This study also introduces a backup protection which is activated if communication network fails. The effectiveness of the proposed protection strategy is analysed through real-time simulation studies by use of the hardware-in-the-loop approach. Furthermore, the effects of fault isolation process on the connected loads are also investigated. The results show that the proposed strategy can effectively protect multi-terminal DC distribution networks and VSC stations against different types of faults.
Starting Page	3517
Ending Page	3528
Page Count	12
ISSN	17518687
Volume Number	10
e-ISSN	17518695
Issue Number	Issue 14, Nov (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/10/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2016.0183
Journal	IET Generation, Transmission & Distribution
Publisher Date	2016-11-04
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Backup Protection Circuit Breaker Communication Network Communication-assisted Fault Location Method DC Circuit Breaker DC Fault Current Distribution Network Fault Current Fault Diagnosis Fault Location Hardware in The Loop Approach Medium Voltage DC Distribution System Protection Strategy Multiterminal DC Distribution Network Protection Multiterminal Medium Voltage DC Grid Fault Location-isolation Scheme Multiterminal VSC-based DC Network Power Converter Power Distribution Fault Power Distribution Protection Power Grid Power Supplies to Apparatus Power System Protection Switch Voltage Source Converter
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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