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×published date:2023-Jul-14
FULL TEXT in - | page 71 - 83
Abstract
This work examines the effect of Static Var Compensator (SVC) and Static Synchronous Compensator (STATCOM) for voltage stability and power flow control in power system using IEEE 14-bus power system model as a sample network. Non-linear load flow equations describing the system steady state operating condition before and after compensation were analysed using Newton–Raphson iterative method and simulated using MATLAB/PSAT software toolbox (R2012a version 2.1.9). When no compensation was applied on the sample network, the voltage magnitude of only bus 10 (0.9223 p.u.) violated the voltage tolerance limit of However, application of SVC and STATCOM separately on the system increased voltage magnitude of bus 10 to 1.0000 and 1.0200 p.u. respectively. Also, the voltage magnitudes of buses 9, 11 and 14 which were initially within the tolerance limit further increased from 0.9747, 0.9892, 0.9831 p.u. to 1.0231, 1.0284, 1.0140 and 1.0356, 1.0386, 1.0220 p.u. respectively with SVC and STATCOM installation. While the use of SVC produced a total real power loss reduction of 5.20% from 25.76 MW to 24.42 MW, STATCOM integration on the system improved the total real power loss from 25.76 MW to 24.26 MW, giving a 5.82% reduction in the total active line loss. Evidence from this work showed that STATCOM produced a better response for voltage stability and power flow control on the sample network than SVC
Keywords: Raphson based load flow equations, Power loss, STATCOM, SVC, Voltage profile
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