Opportunities and barriers of high-voltage direct current grids: a state of the art analysis

2012 ◽  
Vol 1 (2) ◽  
pp. 233-242 ◽  
Author(s):  
Debora Coll-Mayor ◽  
Jürgen Schmid
Keyword(s):  
High Voltage ◽  
Direct Current ◽  
State Of The Art ◽  
High Voltage Direct Current ◽  
Art Analysis

scholarly journals HVdc Circuit Breakers: Prospects and Challenges

2021 ◽  
Vol 11 (11) ◽  
pp. 5047
Author(s):  
Ali Raza ◽  
Ali Mustafa ◽  
Umar Alqasemi ◽  
Kumars Rouzbehi ◽  
Raheel Muzzammel ◽  
...  
Keyword(s):  
High Voltage ◽  
Direct Current ◽  
State Of The Art ◽  
Circuit Breaker ◽  
Wind Farms ◽  
Offshore Wind ◽  
Circuit Breakers ◽  
Offshore Wind Farms ◽  
Hvdc Transmission ◽  
High Voltage Direct Current

The integration of offshore wind farms has revitalized the interest in multi–terminal high voltage direct current (M–HVdc) transmission grids. HVdc breakers’ importance has increased as M–HVdc grids are now a commercial truth. Several HVdc circuit breaker technologies have been developed, published, and appeared as prototypes for HVdc networks. This paper summarizes the HVdc breaker technologies from the last two decades, distributed mainly in literature. A comparison of various state–of–the–art HVdc breakers is presented. Further, areas are identified where further research and development are required. The goal is to provide primary challenges and prospects in the HVdc breaker field.

scholarly journals Review of the PEA Method for Space Charge Measurements on HVDC Cables and Mini-Cables

Energies ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3512 ◽  
Author(s):  
Giuseppe Rizzo ◽  
Pietro Romano ◽  
Antonino Imburgia ◽  
Guido Ala
Keyword(s):  
Space Charge ◽  
High Voltage ◽  
Direct Current ◽  
State Of The Art ◽  
The State ◽  
Cylindrical Geometry ◽  
Full Size ◽  
High Voltage Direct Current ◽  
Charge Measurement ◽  
Current Review

This review takes into account articles and standards published in recent years concerning the application of the Pulsed Electro Acoustic (PEA) method for space charge measurement on High Voltage Direct Current (HVDC) cables and mini-cables. Since the 80s, the PEA method has been implemented for space charge measurements on flat specimens in order to investigate space charge phenomena and to evaluate the ageing of dielectrics. In recent years, this technique has been adapted to cylindrical geometry. Several studies and experiments have been carried out on the use of the PEA method for full size cables and HVDC cable models. The experiments have been conducted using different arrangements of the measurement setup and focusing attention on different aspects of space charge phenomena. In this work, the importance of space charge measurement is highlighted and the state-of-the-art PEA method application to full size cables and mini-cables is described. The main aim of this paper is to offer a complete and current review of this technique. In addition, limits on the use of PEA method are examined and main possible directions of research are proposed in order to improve the applicability, reliability, and replicability of this method.

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