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ischarging and exert the maximum output power [pu.].V. ConclusionsFor the enhancement on power system stability to prevent from a widespread oscillation propagating through the interconnected system results from an impacted disturbance, an autonomous dispersed control conception by ESFs is proposed in this paper. In the proposal, since the control action of each ESFs is only based on the local information of its adjacent lines, it is possible to extend the control scale in an interconnected system. In order to perform the particular interesting of proposed conception to the case in the loop networks, a threemachine sevenbus with twoloop test system is taken as a study example to confirm the appropriateness and effectiveness of the control.Autonomous Dispersed Control to Energy Storage Facilities for the Enhancement of System Stability 9AcknowledgementThis work was supported in part by the National Science Council of the . under Grant NSC922213E027046Conferences[1] Enrico De Tuglie, Maria Dicorato, Massimo La Scala and Pierangelo Scarpellini, “ A Static Optimization Approach to Assess Dynamic Available Transfer Capability”, IEEE Transactions on Power System, Vol. 15, No. 3, Aug. 2000, pp. 10691076.[2] Goran Strbac, Daniel Kirschen and Syed Ahmed, “ Allocating Transmission System Usage on the Basis of Traceable Contribu tions of Generators and Loads to Flows”, IEEE Transactions on Power System, Vol. 13, No. 2, May 1998, pp. 527534.[3] W. R. Lachs, “Controlling Grid Integrity after Power System Emergencies,” IEEE Transactions on Power System, Vol. l7, No. 2, May 2002, pp. 445450[4] Jian Fu, John W. Lamont, “A Combined Framework for Service Identification and Congestion Management” IEEE Trans. on Power System, Vol. 16, No. 1, Feb 2001, pp. 5661[5] J. A. Casazza, “An American’s View of the Reorganization of the ESI”, Power Eng. J., Vol. 11, No. 2, Apr. 1997 pp. 7984.[6] J. Mitra, C. Singh, “Capacity Assistance Distributions for Arbitrarily Configured MultiArea Networks,” IEEE Trans. on Power System, Vol. 12, No. 4, Nov. 1997, pp. 15301535[7] Bharat Bhargava, Gary Dishaw,” Application of an Energy Source Power System Stabilizer on the 10 MW Battery Energy Storage System at Chino Substation”, IEEE Trans. on Power System, Vol. 13, No. 1, Feb. 1998, pp. 145151.[8] Y. G. Hegazy, M. M. A. Salama and A. Y. Chikhani, “ Adequacy Assessment of Distributed Generation Systems Using Monte Carlo Simulation”, IEEE Transactions on Power System, Vol. 18, No. 1, Feb. 2000, pp. 4852.10 臺北科技大學學報第三十七之一期[9] Bjorn H. Bakken, Ove S. Grande, “Auto matic Generation Control in a Deregulated Power System”, IEEE Trans. on Power System, Vol. 13, No. 4, Nov. 1998, pp. 14011406.[10] C. D. Vournas, E. N. Dialynas, N. Hatziargyriou, . Machias, . Souflis and . Papadias, “A Flexible AGC Algorithm for the Hellenic Interconnected System” IEEE Transactions on Power System, Vol. 4, No. 1, Feb. 1989, pp. 6168.[11] ChingTzong Su, ChienTung Lin, “ A New Fuzzy Control Approach to Voltage Profile Enhancement for Power System”, IEEE Transactions on Power System, Vol. 11, No. 3, Aug. 1996, pp. 16541659.