| Author | Sonam Tobgay |
| Note | A research study submitted in partial fulfillment of the requirements for the
degree of Master of Engineering in
Energy, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | The power system consists of complex meshed interwoven network of technologies. With the unbundling of transmission networks under deregulation, significant changes have occurred in the industrial utilities around the world. The effective transmission pricing and loss allocation are of paramount importance for the electric power industry for efficient functioning in the electricity market and encourage investment in transmission assets.
This paper presents an effective method for active power and loss allocation by tracing power flow employing the graph theoritic methods, to determine the contribution of generators to individual loads or line flows and allocation of losses after obtaining the alternating current(AC) load flow result of the system. The insight of different wheeling / transmissiong pricing mechanism used in the power system are also being discussed.
The individual generator contributions of active power at the export bus applying the methodology on 19-Bus Bhutan system indicated inconsistencies with respect to intended flow as per requirement. While there are no impact for the state owned power plants, irrespective of its active power contribution at the export bus despite tariff being different, the 126 MW, Dagachu Hydro Power Plant (DHPP), ideally meant for 100 % export contributes only about 71.94 MW (56.47%) at the export bus. This would have implication on prioritizing power plant for export in the near future as the generation expands.
The loss contribution of generator indicated erratic variation 1.3% to 4.71% amongst the power plants. The current practice of loss allocation of 2% on the individual generator is observed to be inconsistent with the findings.
Finally, the work done in the research is to build a foundation, which can be expanded and used as a springboard for further dedicated research in the future |
| Year | 2019 |
| Type | Research Study Project Report (RSPR) |
| 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 and Environment (EE) |
| Chairperson(s) | Singh, Jai Govind ; |
| Examination Committee(s) | Weerakorn OngsakulSalam, P. Abdul ; |
| Scholarship Donor(s) | Bhutan Power Corporation Limited; |