| Author | Hanif, Mohammad |
| Call Number | AIT Thesis no. ET-93-14 |
| Subject(s) | Thermal power plant--Pakistan
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| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ET-93-14 |
| Abstract | As dependence on older plants in an electric utility increase, utilities must address the problems of aging, leading to poorer efficiency, derated capacity, decreased availability, and higher required margin. It is far more economical to extend the life and increase the output of the older power plants than it is to retire them. This study is focused on the approach to power plant upgrading, through the conversion of existing gas turbine power plants to HSD and furnace oil based combined cycle, and incorporating new technologies to increase the output and efficiency. First, it discuss the overall power system of WAPDA and current situation ofgenerating capability, shortage and the need to repower its older power plants. Next, it reviews the different types of combined cycle. Finally the problems are discussed, when fuel is switched over from HSD to furnace oil. In addition, this study can help utilities achieve a focussed approach to gas turbine power plant upgrading. It discusses the reasons why unit upgraing is an increasingly attractive alternative and it also reviews the upgrade programe by rehabilitation of existing/older steam power plant and their benefits. Furthermore, two generating capacity expansion options (i.e. HSD and F.0 . based combined cycle) are compared on annual cost basis in order to identify the relative merits of each alternative. The results of the study shows that by converting the existing gas turbines to combined cycle, about 50% of the gas turbine output can be added without any further fuel consumption. The economic analysis for the F.O. based conversion of 400 MW gas turbine in WAPDA power system reveals that the investment yields an IRR 16% with PBP 3.01 years only. This conversion also helps to save a sum of $ 161.00 million per year by using F.O. instead of HSD. Comparison with other generating capacity expansion options show the attractiveness of the conversion to F.O. based combined cycle. With a$ 806/kw of installation cost, it is not only the least cost generating capacity expansion alternative but also is the option with the least lead time. WAPDA, facing a deficit of 1900 MW approx. generating capacity in 1992. have a potential of 1000 MW through combined cycle conversion, should opt for this alternative and all possible candidate gas turbine plants should be studied to hareness this cheap source of power generation. |
| Year | 1993 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ET-93-14 |
| 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 C. |
| Examination Committee(s) | Bhattacharya, S.C.;Shrestha, R.M. |
| Scholarship Donor(s) | Government of the Netherlands. |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1993 |