Title :
Advance ACO system in optimizing power system PMU placement problem
Author :
Wang, Bo ; Liu, Dichen ; Xiong, Li
Author_Institution :
Electr. Sch., Wuhan Univ., Wuhan, China
Abstract :
GPS-based synchronous phasor measurement technology is a powerful tool for the security and reliable operation of the inter-connected electric power system. This paper presents an ACO-based approach to optimize the phasor measurement unit (PMU) placement problem. The pheromone trail persistence coefficient adaptive adjustment mechanism and stochastic perturbing progress are introduced into the ant colony system (ACS), in case the algorithm entering the stagnation behavior and getting stuck at local minima. The improved algorithm outperforms the ACS in obtaining global optimal solution and convergence speed, when applied to optimizing the PMU placement problem. A graph-theoretic procedure based on depth first search is adopted to analyze system observability. Simulation results in optimizing a provincial 46-bus system PMU placement problem show that the improved ACS algorithm is effective.
Keywords :
graph theory; optimisation; phase measurement; power system measurement; power system reliability; power system security; stochastic processes; ACO-based approach; GPS-based synchronous PMU technology; adaptive adjustment mechanism; ant colony optimization; depth first search; electric power system security; graph-theoretic procedure; phasor measurement unit; pheromone trail persistence coefficient; power system reliability; stochastic perturbing progress; system observability analysis; Ant colony optimization; Electric variables measurement; Observability; Phasor measurement units; Power measurement; Power system measurements; Power system reliability; Power system security; Power systems; Stochastic systems; ACS; ASPACS; PMU; placement;
Conference_Titel :
Power Electronics and Motion Control Conference, 2009. IPEMC '09. IEEE 6th International
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-3556-2
Electronic_ISBN :
978-1-4244-3557-9
DOI :
10.1109/IPEMC.2009.5157814