A Fundamental Study on Improving the Response Speed of High-Voltage-Side Voltage Control of Bidirectional Chopper

2020 ◽  
Vol 46 (0) ◽  
pp. 110-110
Author(s):  
Yuuichi Yoshida ◽  
Ryo Ito ◽  
Hiroaki Kakigano
Keyword(s):  
High Voltage ◽  
Voltage Control ◽  
Response Speed ◽  
Fundamental Study

MPC-based DC-link voltage control for enhanced high-voltage ride-through of offshore DFIG wind turbine

2021 ◽  
Vol 126 ◽  
pp. 106591
Author(s):  
Juan Wei ◽  
Canbing Li ◽  
Qiuwei Wu ◽  
Bin Zhou ◽  
Da Xu ◽  
...  
Keyword(s):  
Wind Turbine ◽  
High Voltage ◽  
Voltage Control

scholarly journals Application of Dispersed Autonomous Voltage Control System to a Real High Voltage Distribution Network

2002 ◽  
Vol 122 (12) ◽  
pp. 1252-1261 ◽  
Author(s):  
Katsuki Kabemura ◽  
Kazuhiko Yonekura ◽  
Takanori Tsukamoto ◽  
Keiichirou Hashimoto ◽  
Masanori Hara
Keyword(s):  
Control System ◽  
High Voltage ◽  
Distribution Network ◽  
Voltage Control ◽  
Voltage Distribution

scholarly journals High Voltage Control for Ionized Chamber

2013 ◽  
Vol 77 (6) ◽  
pp. 32-34
Author(s):  
Pritesh KumarJain ◽  
Sanjiv Kane ◽  
Chanderkant Garg
Keyword(s):  
High Voltage ◽  
Voltage Control

scholarly journals Control Strategies of Full-Voltage to Half-Voltage Operation for LCC and Hybrid LCC/MMC based UHVDC Systems

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 742 ◽  
Author(s):  
Gen Li ◽  
Wei Liu ◽  
Tibin Joseph ◽  
Jun Liang ◽  
Ting An ◽  
...  
Keyword(s):  
High Voltage ◽  
Low Voltage ◽  
Control Strategies ◽  
Control Process ◽  
Voltage Control ◽  
Load Shedding ◽  
Long Distance ◽  
High Voltage Direct Current ◽  
Bulk Power ◽  
The Time Domain

With the increasing demand of transmitting bulk-power over long-distance, the ultra high-voltage direct-current (UHVDC) transmission systems become an attractive option. Nowadays, not only the line commutated converter (LCC) based systems, but also the modular multilevel converter (MMC) based systems have reached UHVDC levels. The converter stations of UHVDC systems normally utilize two series-connected valve-groups to reduce the difficulties of device manufacturing and transportation. This high-voltage and low-voltage valve-group configuration allows the UHVDC systems to achieve a full-voltage to half-voltage operation which increases the flexibility of the systems. However, the existing research only focuses on the full-voltage to half-voltage control of LCC-UHVDC systems. The control strategies for hybrid LCC/MMC UHVDC systems are underresearched. Moreover, the approaches to reduce the load-shedding caused by the full-voltage to half-voltage control for both LCC and hybrid LCC/MMC based UHVDC systems have not been investigated. In this paper, full-voltage to half-voltage control strategies for both LCC and hybrid LCC/MMC based UHVDC systems have been proposed. Moreover, to avoid load-shedding caused by the half-voltage operation, a power rescheduling method that re-sets the power references of the half-voltage operating and full-voltage operating poles has been proposed. The proposed full-voltage to half-voltage control strategies and power rescheduling method can achieve a stable and fast control process with a minimum power loss. The proposed methods have been verified through the time-domain simulations conducted in PSCAD/EMTDC.

Distributed Cooperative Voltage Control of Multiterminal High-Voltage DC Systems

2020 ◽  
pp. 1-9
Author(s):  
Saeed Lotfifard ◽  
Donya Nojavanzadeh ◽  
Zhenwei Liu ◽  
Ali Saberi ◽  
Anton A. Stoorvogel
Keyword(s):  
High Voltage ◽  
Voltage Control
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