Harmonic Effect For Voltage Stability Condition In Radial Distribution System

The distribution system is part of the electrical power transmission system which has different parameters and characteristics with the transmission system. This is because the distribution system is directly connected to the load, the type of load itself there are two kinds of linear electricity load and nonlinear electrical load will but the non-linear load is the cause of the current distortion in the electrical system that Power and malfunction of the equipment.Therefore, in this research carried out the calculation of conventional power flow combined with the analysis of distortion to know the large and the spread of distortion seen from the power loss and voltage collapse on the electrical system so it can be known how large the effect of harmonizing on the tension stability of a system in certain conditions by looking at results of P-V curve.The method developed in this study was to combine between the backward-forward sweep power flow analysis with the method of adding Continuous Power Flow (CPF) loads with a secant predictor used to view the voltage stability used in one phase radial distribution system so that obtained the value of THD distortion and LAMDA value (factor system load multiplier) that compared with the voltage on the particular bus and in this research obtained on bus 10 is the bus Have a higher sensitivity with the value of voltage originally before the distortion obtained 0.8911 PU and lamda value of 3.119 to be a voltage value of 0.914 Pu and Lamda reached the maximum point of 2.321. The simulation was done with the help of MatLab software and compared to ETAP software with the validation of THD value with error of 2.86% on bus 10.