CONTROL OF PHOTOVOLTAIC INVERTERS FOR TRANSIENT AND VOLTAGE STABILITY ENHANCEMENT

The way the power grid is run is changing as more megawatt-scale photovoltaic (PV) power plants and other big inverter-based power plants are added to the power system. In reaction to these modifications, new grid code regulations stipulate that inverter-base d power plants must offer dynamic support in addition to maintaining grid connectivity during malfunctions. The literature refers to this characteristic as temporary cessation operation. The influence of these systems on the overall power system stability issue has not been well-explained by the few published research on brief halt operating for PV power plants. In an effort to In order to increase the transient stability of a synchronous generator linked to the grid, this research suggests a control strate gy for PV inverters. The research demonstrates how the suggested control technique causes the dc link capacitors of the PV inverter to absorb a portion of the kinetic energy stored in the synchronous machine during a brief stoppage. Additionally, by inject ing reactive power, the suggested approach can enhance voltage stability. The efficiency of the suggested control method is demonstrated through the presentation of simulation and experimental findings.