| Author | Orawan Phochai |
| Call Number | AIT Thesis no.ET-14-14 |
| Subject(s) | Photovoltaic power systems--Thailand
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Energy |
| Publisher | Asian Institute of Technology |
| Abstract | The installation of solar PV systems has been growing rapidly in Thailand due to the supported of the government. The active and reactive power feed-in by grid-connected solar PV systems will result in voltage rise over its maximum limit at point of common coupling and distribution systems. The voltage rise over the limit can cause the PV system to disconnect from the grid. This thesis proposes different voltage control strategies to maintain the voltage in 22 kV distribution systems caused by grid connected solar PV systems. Moreover, the voltage control strategies include four different active and reactive power control strategies include limitation of active power feed-in, fixed power factor method, automatic dynamic active power control, and automatic dynamic active and reactive power control. The last control strategy is to use the on-load tap change transformer. The simulation of the each control strategies are done on MATLAB/Simulink. Test results show that an inverter control strategy by fixed power factor method is both technically and financially better than the other control strategies to limit voltage rise within operating limits. Compared to inverter control strategies, the on-load tap change transformer is an effective means to limit voltage rise caused by grid connected solar PV system due to the highest IRR of 16.48% and the shortest discounted payback period of 6.74 years. |
| Year | 2014 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Energy Technology (ET) |
| Chairperson(s) | Weerakorn Ongsakul |
| Examination Committee(s) | Singh, Jai Govind;Dhakal, Shobhakar; |
| Scholarship Donor(s) | PEA;Asian Institute of Technology Education Cooperation Project;Asian Institute of Technology Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2014 |