JJEM: Volume 1 Issue 1 (Jan - June 2017)
JJEM: Volume 1 Issue 1 (Jan - June 2017)
2017-06-30
Study of Reactive Power Compensation and Reduction of Voltage Fluctuations in Wind Mill Connected To Weak Grid System Using Unified Power Quality Conditioner
Veeresha K B, Thejaswi A H, Manjula M G , Deepa N H
In recent times, the grid integration of wind power generation to the standard grid has been increased significantly. The Wind Farm (WF) is to be connected to High Voltage (HV) power transmission grids through Medium Voltage (MV) distribution headlines. The poor voltage regulation at the Point of Common Coupling (PCC) is the main problem commonly found Wind Farm connected. Also, WF is affected by Tower Shadow Effect due disturbance in wind flow which causes voltage fluctuations in the system. Compensation techniques are used addresses the problem of poor voltage regulation at PCC and WF stability due system load changes. In this Paper, a compensation strategy based on particular custom power device i.e. Unified Power Quality Conditioner (UPQC) has been proposed. Synchronous Reference Frame control scheme is used to mitigate voltage fluctuations and to regulate the WF terminal voltage at PCC caused by pulsating WF generated power and system load changes respectively. The effectiveness of the proposed compensation approach is demonstrated using a study case. Simulation results show that there is reduction in power fluctuations at grid and voltage fluctuations at PCC.
Wind Farm, Weak Grid, Unified Power Quality Conditioner, Voltage Fluctuations.