TITLE:
The Analysis of the Differences between Electromechanical Transients Simulation and Electromagnetic Transients Simulation
AUTHORS:
Chengjun Xia, Haoyu Huang, Kun Men, Cuiqiong Chen
KEYWORDS:
Electromagnetic Transients, Electromechanical Transients, Simulation Difference
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.2 No.9,
September
16,
2014
ABSTRACT:
The paper firstly interprets
the differences between electromechanical transients program BPA and
electromagnetic transients program EMTDC in the field of principle, model and
algorithm. Then the authors carry out the simulation based on single-machine
infinite-bus system and draw some conclusions. The time consumption of the
simulation using EMTDC is much longer than the simulation using BPA under the
same length of time. The results of BPA are close to those of EMTDC under
steady conditions. The fundamental frequency component of the EMTDC results
seems closer to the BPA results than its original value, but they still away
from completely consistent. In this simulation of single-machine infinite-bus
system, the transient stability results of BPA and EMTDC are close, but the
results of BPA are apt to be more conservative. All the conclusions above have
a certain reference value to both hybrid simulation and comprehensive analysis
method in the study of the AC/DC digital simulation of large power grid.