Impacts of Conservation Voltage Reduction (CVR) and Demand Response (DR) programs on AIT's electricity demand | |
| Author | Yin Min Khin |
| Call Number | AIT Thesis no.ET-22-03 |
| Subject(s) | Renewable energy sources Distributed generation of electric power |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Sustainable Energy |
| Publisher | Asian Institute of Technology |
| Abstract | A good distribution system is one of the most key features in any country's energy grid system. Measurement devices like smart meters, current and voltage sensors and high-speed communication have recently become available to help improve distribution system. This study focuses on the Asian Institute of Technology (AIT) which is an international institute located in Thailand which consists of many buildings that consumes energy a lot. Thus, AIT needs a good distribution management system. Since AIT electricity consumption is very high, CVR method can save more energy effectively when more loads are added to the system. During Covid-19, the usage of energy consumption from chiller plant becomes very less because daily lifestyle changed to mostly work from home and all academic buildings are closed. Chiller plant has a good performance when pumps are operated nearly full load condition. But mostly loads from chiller plant reduce and it causes chiller plant to be a poor performance operation. On top of that replacing individual AC system instead of chiller plant becomes one option to save the energy consumption and to meet the best optimized operation when load consumption is very little. CVR method has been done for 26 buildings that installed smart meter recently in AIT. Load model is evaluated by using MATLAB. 5% voltage reduction from its normal voltage level is done for 17 buildings out of 26 buildings and the energy savings is 299.6609 kWh for one day. 3% voltage reduction has been done for 7 buildings, saving was 107.9442 kWh and two buildings were computed with the voltage reduction of 4%, saving was 13.1785 kWh. The observation of second objective was chiller is operating even the load is less due to Covid-19. The operating system of SEC is higher than the design specifications. To get a good performance of chiller, the temperature difference can be increased by adjusting the flow rate and cooling load. This can improve the performance of chiller. In the final objective, cost-effectiveness analysis was done by installing individual AC for three dormitories and the experiment has been done only 8 hours for 15 days period. Energy saving can be found 10,624 kWh and cost saving was 45,683 Baht for 15 days. The payback period was 1.6 years. For all places where supply form chiller plant, the analysis was done 24 hours for one month. Energy saving was 48,387 kWh and cost saving was 208,064 Baht per month. The payback period of installing individual AC instead of chiller plant was 4.6 years. |
| Year | 2022 |
| 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 | Sustainable Energy (ET, Start from 2022) |
| Chairperson(s) | Singh, Jai Govind |
| Examination Committee(s) | Weerakorn Ongsakul;Roy, Joyashree |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2022 |