Abstract HVDC transmission systems can overcome some limitations inherent with AC transmission systems such as transmission over long distances and transmission via cables. One aspect of importance is the improvement in stability achieved with AC–DC transmission systems. In this paper, a methodology for the optimal Proportional Integral Derivative (PID) controller design using the Modified Genetic Algorithm (MGA) is proposed to improve the transient stability of AC–DC transmission systems after faults. This study consists of the formulation of the load flow calculation, basic controls on HVDC transmission systems, a mathematical model selection for stability analysis and a supplementary signal control by an optimal PID controller using the MGA. The proposed method is verified using computer simulation. The results show that the application of MGA-PID controller in AC–DC transmission systems will improve the transient stability. The PID controller design using the MGA method is shown to be advantageous when applied for the AC–DC transmission systems.
[1]
E. N. Dialynas,et al.
Reliability modeling and evaluation of HVDC power transmission systems
,
1994
.
[2]
S. Kuruganty.
Effect of HVDC component enhancement on the overall system reliability performance
,
1994
.
[3]
K. Yamasaki,et al.
A dynamic routing control based on a genetic algorithm
,
1993,
IEEE International Conference on Neural Networks.
[4]
Tanja Urbancic,et al.
Genetic algorithms in controller design and tuning
,
1993,
IEEE Trans. Syst. Man Cybern..
[5]
J. Reeve,et al.
Robust adaptive control of HVDC systems
,
1994
.
[6]
A. K. David,et al.
A robust co-ordinated control scheme for HVDC transmission with parallel AC systems
,
1994
.