scholarly journals HV multi-terminal DC lines as the backbone of the energy transmission system – A research plan to tackle challenges

2019 ◽  
Vol 292 ◽  
pp. 01067
Author(s):  
Christos Christodoulou ◽  
Stavros Lazarou ◽  
Elias Zafiropoulos ◽  
Vasiliki Vita ◽  
Lambros Ekonomou
Keyword(s):  
Power Generation ◽  
High Voltage ◽  
Direct Current ◽  
Transmission System ◽  
High Voltage Direct Current ◽  
Renewable Power ◽  
System A ◽  
Renewable Power Generation ◽  
Research Plan ◽  
Overlay Grid

Transmission system reinforcement is an issue of great importance, in an effort to handle the increasing renewable power generation. Nevertheless, the upgrade of the transmission system (lines, substations, etc.) is not always attainable, due to techno-economical restrictions. To this context, High Voltage Direct Current (HVDC) grids or converting already existing AC lines to DC lines could offer an alternative solution, considering also the interconnection of offshore intermittent renewable generation resources, the connection of remote generation sources to load centers and the inter-continental transfer of large quantities of energy surpassingly an overlay grid. The current work presents a research plan for multi- terminal HVDC grids, in an effort to face technical challenges.

Fault Diagnosis Simulation of Light High Voltage Direct Current Transmission System

2015 ◽  
Vol 740 ◽  
pp. 466-469
Author(s):  
Xue Hua Jiang
Keyword(s):  
Fault Diagnosis ◽  
High Voltage ◽  
Direct Current ◽  
Practical Method ◽  
Transmission System ◽  
System Structure ◽  
Major Power ◽  
High Voltage Direct Current ◽  
Light System ◽  
Hvdc Light

High Voltage Direct Current (HVDC) system was often the link between major power grids. In order to ensure the safe operation of HVDC, fault diagnosis method was studied. The system structure of HVDC Light system was analyzed, and the normal and fault conditions of the transmission system were simulated in the Matlab platform. This method was very convenient and simple, and it could restore the real situation. The use of simulated waveform could effectively identify the fault types of actual situation, and then it was a flexible, efficient and practical method of fault diagnosis in HVDC Light system.

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.

Sign in / Sign up

Export Citation Format

Share Document