Static voltage stability of distribution systems integrated with small hydro power plant | |
| Author | Nguyen Cong Hien |
| Call Number | AIT Thesis no.ET-09-01 |
| Subject(s) | Hydroelectric power plants Distributed generation of electric power Electric power systems |
| 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 | Power system stability has been recognized as an important subject for secure operation of the system since 1920s. Recently, significant number and capacity of DG penetrating into power system, particularly distribution system, lead power system stability in general and voltage stability in specific become more and more important issue for both researchers and power system operators. Limitations of transmission and production of reactive power have major effects on voltage stability of electric power system. Therefore, this thesis proposes a particle swarm optimization (PSO) algorithm to identify proper location and size of DG in a primary distribution system to minimize the total reactive power loss. The results from this work show that the methodology helps improve static voltage stability and loadability of distribution power system with different type of DG installed. Four types of DG are considered in this thesis with two scenarios: one DG installed and two DGs installed. The algorithm is compared and tested by checking through two standard radial distribution test systems, 33-bus and 69-bus and one practical radial distribution test systems of Laocai province in Vietnam considering small hydro power plants in this area. The algorithm can obtained the maximum reactive power loss reduction for four different types of DG installed with two scenarios. The improvement of static voltage stability, loadability, voltage profile, and voltage stability index of the systems in different cases are also obtained. The objective is to minimize reactive power loss in radial distribution system is more effective in term of static voltage stability improvement than minimize real power loss objective, except for DG type 3. The results from this work will help distribution companies design what type of DG they should go for in case they want to improve loadability of the system. |
| Year | 2009 |
| 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) | Mithulananthan, Nadarajah; |
| Examination Committee(s) | Wang, Yaw Juen;Weerakorn Ongsakul; |
| Scholarship Donor(s) | Norway; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2009 |