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Synchronous Compensators: Models Verified by Tests of Automatic Voltage Regulator, Reactive Power Control, and Voltage Joint Control

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4 Author(s)
Aguero, J.L. ; Fac. de Ingenierfa, Univ. Nacional de La Plata, Facultad De Ingenieria ; Arnera, P.L. ; Lastra, R.E.B. ; Beroqui, M.C.

This paper presents models verified by tests of the excitation control systems (ECSs) of six large synchronous compensators (SCs) rated +125/-120 MVAr. These equipments for grid voltage control are placed in the substation Ezeiza of 500 kV belonging to the Interconnected Argentine System (SADI in Spanish). The substation Ezeiza is located in the SADI load center. Each SC has an ECS integrated by an automatic voltage regulator (AVR) with several limiters and a reactive power control (RPC). ECSs are governed by a single voltage joint control (VJC) to control the voltage at a 500-kV bus bar. The ECS is UNITROL F from ABB and, the VJC is implemented in a programmable logic controller (PLC). The AVR, RPC, and VJC models are presented. These models were predefined with information furnished by the manufacturer. Then, these models were validated by tests. Test records and their simulations with the proposed model are also presented. Described models have been incorporated to the database of dynamic models used for stability studies in the SADI

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Power Systems, IEEE Transactions on  (Volume:21 ,  Issue: 4 )