Fault Handling Methods and Comparison for Different DC Breaker Topologies and MMC Topologies of the HVDC System

Titelangaben

Jiang, Xu ; Bakran, Mark-M.:
Fault Handling Methods and Comparison for Different DC Breaker Topologies and MMC Topologies of the HVDC System.
In: Advances in Power Electronics. Bd. 2018 (2018) . - 2719380.
ISSN 2090-1828
DOI: https://doi.org/10.1155/2018/2719380

Volltext

Link zum Volltext (externe URL):

Abstract

The HVDC system has many significant benefits and is widely used around the world.The protection of HVDC system is always an issue, which should be solved. This paper presents the working principle of different protection schemes. The advantages and disadvantages of these protection schemes are also introduced. In order to solve the HVDC fault, two protection strategies are proposed.One design focusses on the topologies of theHVDC breaker in theHVDC line, such as all-solidHVDC breaker, resonant HVDC breaker, and hybrid HVDC breaker. The other design is from the viewpoint of converter topology, which has two types.
One type generates the counter-emf in arms, such as full bridgeMMC, hybridMMC, and clamp-doubleMMC. The other type cuts off the current path fromthe AC side to the DC side, which is also introduced in this paper. Some performances of these topologies are compared, such as switching time and efficiency.