TITLE:
Analysis of Commutation Failure in Multi-Infeed HVDC System under Different Load Models
AUTHORS:
Chengjun Xia, Zhongchao Yang, Kun Men, Yong Zhao
KEYWORDS:
AC/DC Hybrid System, Commutation Failure, Voltage of Converter Bus, Load Model, Power System Simulation
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.2 No.9,
September
17,
2014
ABSTRACT: HVDC technology has been widely used in modern power system. On one
hand, HVDC has the advantages of economy, high efficiency and strong controllability.
While on the other hand, it makes the dynamic characteristics of the power
system becoming more and more complex. That puts forward a new challenge to
system stability and raises new questions for power system simulation. This
paper focuses on the interaction between AC and DC systems, especially the
problem of commutation failure caused by AC system fault. Based on the data of
China Southern Power Grid, this paper calculates the fault regions that may
cause commutation failure and calculates the system critical clearance time
under different load models, analyzes the impacts of different load models on
commutation failure and the stability of AC/DC hybrid system.