| Title |
Power Control and Dynamic Performance Analysis of a Grid-Interactive Wind/PV/BESS Hybrid System |
| Authors |
김슬기(Kim, Seul-Ki) ; 전진홍(Jeon, Jin-Hong) ; 조창희(Cho, Chang-Hee) ; 안종보(Ahn, Jong-Bo) |
| Keywords |
Grid-interactive Hybrid System ; Power Control ; Wind Turbine ; PV Array ; BESS |
| Abstract |
Most conventional hybrid systems using renewable energy sources have been applied for stand-alone operation, but Utility-interface may be an useful and viable option for hybrid systems. Grid-connected operation may have benefits such as reduced losses in power system distribution, utility support in demand side management, and peak load shaving. This paper addresses power control and dynamic performance of a grid-connected PV/wind/BESS hybrid system. At all times the PV way and the wind turbine are individually controlled to generate the maximum energy from given weather conditions. The battery energy storage system (BESS) charges or discharges the battery depending on energy gap between grid invertger generation and production from the PV and wind system. The BESS should be also controlled without too frequently repeated shifts in operation mode, charging or discharging. The grid inverter regulates the generated power injection into the grid. Different control schemes of the grid inverter are presented for different operation modes, which include normal operation, power dispatching, and power smoothing. Simulation results demonstrate that the effectiveness of the proposed power control schemes for the grid-interactive hybrid system. |