The current practices associated with voltage stability in most power systems consists of the ability to store each and every sequence for the converter to have the necessary voltage balance associated with the total developed and taken power. The main problem here is that the power system may face instability in voltage distribution during progressive or uncontrollable drop in voltage magnitude after a disturbance which may occm due to unexpected increase in power load or change in operating condition. This thesis has investigated the effect of the embedded generation on the stability of the voltage in a power system. For the purpose of this research power system with 14 buses and Font somces has been modeled by using MA TLAB Simulink software. Voltage sensitivity analysis method was used in this study with regard to detecting voltage collapse vulnerability of buses. The result of P-Q regions for PV buses and PQ buses were
compared based on the loading margins of the bus voltage within P-Q regions. To compare the voltage stability in the system, the simulation has been carried out with embedded generation and without embedded generation. Moreover, in this simulation EG has been placed in a different bus for each time a simulation is run. Results have shown that the active power and reactive power IEEE 14 bus circuit model generates streams of different load when embedded generation is injected into a different bus. The voltage on each bus from the results has been analyzed as well. This study found that maintaining a gradual state voltage can allow a range of continuously constraints along with minimizing vitality losses within a considerably long period as a result. The voltage along with reactive power control equipment can be operated locally dependent on pre-determined local points.
