International Journal of Engineering, Science and Advanced Technology
International journal of engineering science and advanced technology. · 2024
The dynamic voltage restorer (DVR) is one of the modern devices used in distribution systems to protect consumers against sudden changes in voltage amplitude.In this project, emergency control in distribution systems is discussed by using the proposed multifunctional DVR control strategy.In addition, a multi-loop controller based on Posicast and P+ Resonant controllers is suggested to eradicate steady-state inaccuracy in DVR response and enhance transient reaction, respectively.Some load voltage perturbations produced by induction motor starting and a three-phase short circuit failure are addressed by the suggested technique.In addition, the suggested DVR's capacity to minimize the downstream fault current has been tested.The DVR will be protected and the point of common coupling (PCC) voltage will be restored by the current limiter.The PCC is the bus to which all feeders under study are linked.One novel approach is to use the DVR as a virtual impedance, which safeguards the PCC voltage from downstream faults without causing issues with actual power injection into the DVR.The findings of the simulation demonstrate that the DVR can manage the distribution systems in an emergency.