The purpose of this paper is to derive a systematic procedure f o r reactive power control to decide the optimal location and size of compensation shunt capacitors so a s to improve the system voltage profile. The proposed algorithm f o r locating the compensators is based on the sensitivities of the reactive powerflow of system lines with respect to the reactive power injection at system buses where the reactive power of shunt compensation is considered as an important strategy in controlling voltage stability. After identifiing the candidore buses, the problem is formulated as linear programming problem of the minimization of the possibility of voltage collclpse and improving the system voltage profile by defining fewer equations and constraints, and saving computer storage and time. A test system is selected to verifi the effectiveness and to confirm the accuracy of the proposed method. We therefore conclude that the practical application of this technique would enhance the security of a power system b y reducing the risk of voltage collapse.
The purpose of reactive power compensation is to keep good voltage quality , "ize the energy loss orthe investment of reactive compensation devices and improve the power transmission capability . In this paper, effects of voltage sensitive loads , namely, constant power, constant current and constant impedance type loads, on the voltage profile and real power loss to decide the optimal location of series orshunt capacitors are studied and discussed. Expnential modeling is used for the three types of the loads in this analysis . The performance indices determined by the sensitivity of voltage variation ( PIV ) , energy loss (PIL) and composite factors (PNL) to the reactive pwer injectionareusedtodetennbed the near optimum location of series capacitor ( on the lines ) or shunt capacitors ( at the buses ) ta!ang the voltage sensitive loads into consideration . A 14 nodepowersystemisusedas numerical example for this study.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.