DETERMINING THE BEST SUITABLE CONTROL STRATEGY OF THE VSC-HVDC FOR VOLTAGE STABILITY

Year 2018, Volume: 13 Issue: 4, 268 - 279, 13.10.2018

Kadir Abacı , Volkan Yamaçlı

Abstract

In this paper, to improve voltage stability of the most critical bus of the New England 39 bus test system has proposed a new DC transmission line based on the VSC-HVDC (Voltage source converter-High Voltage Direct Current) instead of AC transmission line. The power transferred has been provided by the VSC-HVDC that have two steady state control modes to the critical bus. It is determined by the sensitivity analysis the most critical bus of the power system. In this bus the effect of heavy loading on long term voltage stability is investigated. In the modified test system for all situations, to improve of the voltage stability is determined the best suitable control strategy for the voltage source converters. Simulations are conducted in DIgSILENT Power Factory 15.0 software. The results of proposed test system compared and presented the base system that included AC transmission line. 

Keywords

Voltage Stability, VSC-HVDC, VSC Control Strategy, P-V Curves, DIgSILENT

DETERMINING THE BEST SUITABLE CONTROL STRATEGY OF THE VSC-HVDC FOR VOLTAGE STABILITY

Abstract

In
this paper, to improve voltage stability of the most critical bus of the New
England 39 bus test system has proposed a new DC transmission line based on the
VSC-HVDC (Voltage source converter-High Voltage Direct Current) instead of AC
transmission line. The power transferred has been provided by the VSC-HVDC that
have two steady state control modes to the critical bus. It is determined by
the sensitivity analysis the most critical bus of the power system. In this bus
the effect of heavy loading on long term voltage stability is investigated. In
the modified test system for all situations, to improve of the voltage
stability is determined the best suitable control strategy for the voltage
source converters. Simulations are conducted in DIgSILENT Power Factory 15.0
software. The results of proposed test system compared and presented the base
system that included AC transmission line. 

Keywords

Voltage Stability, VSC-HVDC, VSC Control Strategy, P-V Curves, DIgSILENT

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