DC fault analysis of MMC based HVDC system for large offshore wind farm integration

2013 ◽  
Author(s):  
Yang Gao ◽  
M. Bazargan ◽  
Lie Xu ◽  
Wuxing Liang
Keyword(s):  
Wind Farm ◽  
Fault Analysis ◽  
Offshore Wind ◽  
Offshore Wind Farm ◽  
Hvdc System ◽  
Dc Fault ◽  
Wind Farm Integration

scholarly journals Real Time Simulation of Wind Farm Connected MMC-HVDC System

2020 ◽  
Vol 8 (6S) ◽  
pp. 46-52
Keyword(s):  
Real Time ◽  
Wind Farm ◽  
Computing Time ◽  
Offshore Wind ◽  
Modular Multilevel Converter ◽  
Offshore Wind Farm ◽  
Multilevel Converter ◽  
Real Time Simulation ◽  
Hvdc System ◽  
Time Simulation

Real time simulators play a major role in R&D of Offshore wind farm connected modular multilevel converter (MMC)-HVDC system. These simulators are used for testing the actual prototype of controllers or protection equipment required for the system under study. Modular multilevel converter comprises of number of sub modules (SMs) like Half/ full bridge cells. While computing time domain Electromagnetic transients (EMTs) with the system having large number of SMs pose a great challenge. This computational burden will be more when simulated in real time. To overcome this, several authors proposed equivalent mathematical model of MMC. This paper proposes the real time simulation start-up of offshore wind farm connected modular multilevel converter (MMC)-HVDC system. This paper also describes about how the above said systems is simulated in OPAL-RT based Hypersim software.

scholarly journals Research on hybrid multi-terminal high-voltage DC technology for offshore wind farm integration

2013 ◽  
Vol 1 (1) ◽  
pp. 34-41 ◽  
Author(s):  
Peng Zhan ◽  
Chenghao Li ◽  
Jinyu Wen ◽  
Yu Hua ◽  
Meiqi Yao ◽  
...  
Keyword(s):  
High Voltage ◽  
Wind Farm ◽  
Offshore Wind ◽  
Offshore Wind Farm ◽  
Wind Farm Integration

scholarly journals Fault Ride Through Strategy for Offshore Wind Farm Integration System via MMC-HVDC

2018 ◽  
Vol 173 ◽  
pp. 03083
Author(s):  
Zhang Lijun ◽  
Zhong Yujun ◽  
Chen Rui ◽  
Sun Yikai ◽  
Zhang Jing ◽  
...  
Keyword(s):  
Wind Farm ◽  
Control Strategies ◽  
Fault Isolation ◽  
Offshore Wind ◽  
Offshore Wind Farm ◽  
Integration System ◽  
Fault Ride Through ◽  
Bus Voltage ◽  
Grid Side ◽  
Wind Farm Integration

When offshore wind power is transmitted to ac grid through MMC-HVDC, the current and voltage will be quite different from those in traditional ac grid during grid side fault. This paper sets up an offshore wind farm integration system via MMC-HVDC and designs control strategies for each unit in the system. The fault ride through strategy of the system is proposed and its effectiveness has been verified. Thus, the AC bus voltage on wind farm side will stay stable during AC side fault. Once the chopper resistance is set properly, the output power and current of the wind farm can basically remain unchanged, which can successfully achieve fault isolation. The simulation results based on PSCAD have verified the theoretical analysis.

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