Active control for power quality improvement in hybrid power systems

Abstract

Renewable energy has made a stunning entrance to the market. They are used to reduce the reliance on hydrocarbons (petrol-based) generation. The integration of these systems (wind energy, hydro energy, solar power etc) created different kinds of problems in the grid. Whether system stability problems or Power Quality issues, these issues need solving. In order to do so passive filters are used such as harmonic filters based on RLC circuits, or active filters such as Static Synchronous Compensator (STATCOM) and Dynamic Voltage Restorer (DVR). STATCOM is a device that regulates the voltage level or the reactive power in the system. It is used to maintain voltage stability, enlargement of critical clearing time. DVR is a dynamic voltage restorer that can solve the problem of voltage power quality issues. This paper will integrate the STATCOM and the DVR for voltage control and harmonics filtering simultaneously.