scholarly journals Reliability evaluation and thermal design of medium-voltage converter for underwater long-distance high-voltage direct current transmission system

2019 ◽  
Vol 2019 (16) ◽  
pp. 2239-2243
Author(s):  
Siyuan Ma ◽  
Jinbo Zhao ◽  
Cheng Luo ◽  
Qiong Chen ◽  
Ming Zha ◽  
...  
Keyword(s):  
High Voltage ◽  
Direct Current ◽  
Reliability Evaluation ◽  
Transmission System ◽  
Thermal Design ◽  
Voltage Converter ◽  
Long Distance ◽  
Medium Voltage ◽  
High Voltage Direct Current ◽  
Current Transmission

Reliability Evaluation & Analysis of UHVDC Transmission System

2013 ◽  
Vol 860-863 ◽  
pp. 2107-2111
Author(s):  
Cong Zhao ◽  
Yuan Zeng ◽  
Guang Yu Lei
Keyword(s):  
High Voltage ◽  
Direct Current ◽  
Fault Tree Analysis ◽  
Transmission System ◽  
Repair Time ◽  
Analysis Method ◽  
Fault Probability ◽  
Tree Analysis ◽  
High Voltage Direct Current ◽  
Current Transmission

The reliability of UHVDC (ultra-high voltage direct current) transmission system is significant to the development of power grid. The paper selects dual 12-pulse converters on each pole to model and analyze the UHVDC transmission system. Firstly, the system is divided into six subsystems to evaluate the reliability by the fault tree analysis method. Then based on the fault frequency and the repair time of each subsystems bottom components, the paper calculates the fault frequency and the repair time of each subsystem. Using the frequency and duration method, the paper calculates the fault probability, fault frequency and repair time of the whole system. Finally, it is validated by the actual data of typical lines.

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