Optimal allocation of Distributed Generation (DGs) and static VAR compensator (SVC) in a power system using Revamp Voltage Stability Indicator

摘要

The power system round the globe functions at highly loaded conditions resulting in poor voltage profile, voltage instability and high system losses. Electrical power increment and difficulties in providing required capacity provide a spur to appoint a Distributed Generation (DGs) and Static VAR Compensator (SVC) option. DGs and SVC integration ameliorate voltage profiles, system efficiency, Voltage stability and power quality and to lower system losses, while neglecting consequential venture in transmission and distribution systems. The device does not work satisfactorily if it is placed in any random location in the system therefore It is necessary to determine the optimal location of the devices (DG and SVC), as the computational time requirement can be reduced by performance analysis of the device at weaker bus location. In the present work on an IEEE 14 bus system, the weak bus identification is determined by pioneering and ingenious approach called Revamp Voltage Stability Indicator (RVSI). The optimal allocation of the device has been done based on its performance assessment at different identified weak bus locations using 3 different indices Voltage Profile Improvement Index (VPII), Line Loss Reduction Index (LLRI) and Revamp Voltage Stability Indicator (RVSI). The Electrical Transient Analyzer Program (ETAP) software is being used for the load flow analysis of the IEEE 14 bus system.