| Author | Ngo Huy Toan |
| Call Number | AIT Thesis no. ET-00-7 |
| Subject(s) | Electric power transmission--Vietnam
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| Note | A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | In the study, a practical implementation method of value-based reliability transmission planning (VBRP) using probabilistic voltage stability and reliability assessment (VSRA) has been investigated. The process considers a newly developed index of expected voltage stability margin (EVSM), that indicates system overall voltage stability and appears to be suitable to evaluate the voltage stability of power systems for planning purposes. While the EVSM index accounts for all load situations and contingency cases that the system would experience during planning stages, a system reliability index of cost of unreliability (UC) subject to load curtailment against voltage collapse is estimated accordingly throughout the probabilistic process. Both EVSM and UC will help planners to determine the best scheme for future planning configuaration. Also in the study, methods of voltage stability analysis and voltage stability margin determination are mentioned. For planning purposes, steady-state analysis using available static voltage stability indicators is assumed appropriate to determine a proximity of voltage collapse. Various computation tools including popular load flow, contingency analysis and selection, voltage stability and reliability evaluation, have been presented and a PC VSPLAN program has been developed in order to implement the method. The remedial measures of generation rescheduling, shunt and series compensation controlling, tap setting and load shedding against voltage collapse when outages occur and system load varies, are desirably included. For fast computation, sparse factorization techniques are recommended. VSPLAN h~s been successfully applied for IEEE Reliability Test Systems RTS-79 and RTS-96, and finally, is applied to the expansion planning of 500-220kV transmission systems in Vietnam, EVN-38 and EVN-98, which are the existing and the projected ones in 2005. The study also reveals a concept of inceremental cost of system stability that is consistent to a similar theory of system reliability that may be considered more for applying in system stability-against-stability integration applications. |
| Year | 2000 |
| 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) | Surapong Chirarattananon;Thukaram, Dhadbanjan; |
| Examination Committee(s) | Yu, Cunyi;Rajapakse, Athula; |
| Scholarship Donor(s) | Swedish International Development Cooperation Agency (Sida); |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2000 |