Efficient grid management system with renewable and conventional power sources

Abstract

The main aim of this paper is to enhance the utilisation of solar and wind power in Power grid. Active network management ensures the overall grid balance and stability in the existing system with Renewable Energy Sources. Grid connected Renewable Energy Sources (RES) employs power electronic converters which are usually controlled by proportional integral (PI) controller in order to ensure sinusoidal current injection to the grid. Although the PI controller is well established and easy to use under normal grid conditions, it leads to system instability under abnormal grid conditions. A new method is developed using the proportional resonant (PR) controller to replace (PI). Thirty bus systems with and without renewable sources are designed and the simulation outcomes were presented. Requirement of conventional real power was found to be reduced by adding non-conventional system like wind and solar sources. Superiority of the proposed system was highlighted.