Title :
Minimization of adverse effects of time delay in smart power grid
Author :
Ghosh, Sudip ; Ali, M.H.
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. of Memphis, Memphis, TN, USA
Abstract :
Time delay has adverse effects on control systems in an electric power grid. This paper analyzes the cyber-attack related time delay issues, and deals with the minimization of negative effects of such delays in smart gird system. The prediction method has been used to minimize the negative effects of time delay. The OPRT (optimal reclosing time) method to reclose circuit breakers are considered. Time delays of 100ms and 2.2s have been considered. The effectiveness of the proposed method has been tested in the IEEE nine-bus power system model. Both balanced and unbalanced permanent faults are considered. Simulations are performed through Matlab/Simulink software. The performance of the system considering time delays with the predictor and without the predictor has been compared. From the simulation results, it is shown that the proposed predictor performs well in minimizing the negative effects of time delays.
Keywords :
circuit breakers; delays; load forecasting; minimisation; power system faults; smart power grids; IEEE nine-bus power system model; Matlab-Simulink software; OPRT method; adverse negative effect minimization; balanced permanent fault; circuit breaker; cyber-attack analysis; optimal reclosing time method; prediction method; smart electric power grid; time 100 ms; time 2.2 ms; time delay; unbalanced permanent fault; Delays; Generators; IP networks; Minimization; Protocols; Software packages; Balanced fault; cyber-attack; optimal reclosing time (OPRT); predictor; time delay; total kinetic energy; unbalanced fault; unsuccessful reclosing;
Conference_Titel :
Innovative Smart Grid Technologies Conference (ISGT), 2014 IEEE PES
Conference_Location :
Washington, DC
DOI :
10.1109/ISGT.2014.6816459
